Earthquake Vibrating Gold Classifier Gold Prospecting and Save your poor tired back! No stooping, squatting, bending or bucket shaking required with the "Earthquake"vibrating bucket gold classifier! Built with a UV and water resistant coating, the sturdy Earthquake is extremely effective for screening both desert and river material, and has been tested using bucket style classifiers from 1/2 inch through 100 mesh screens. EARTHQUAKE Vibrating Gold ClassifierWelcome fellow prospectors!
mining vibrating screens and rectangular separatorbelow are some of the materials our mining vibrating screens are able to screen and separate, helping to increase capacity and reduce cost: silica sand screening machines silica sand is a form of quartz that has become sand due to erosion by millennia of water and wind. gold processing,extraction,smelting plant design, equipment gold ore. prominer maintains a team of senior gold processing engineers with expertise and global experience. these gold professionals are specifically in gold processing through various beneficiation technologies, for gold ore of different characteristics, such as flotation, cyanide leaching, gravity separation, etc., to achieve the processing plant of optimal and costefficient process designs. 3the best classifiers, sieves, &screens for gold prospectors may 15, 2016 · screen classifier sets . the 1/4 classifier is a good basic size if you just want one, but for optimal gold recovery its a good ideal to get several different screen sizes. buying a set will allow you to sift down to extra fine material so that when you finally get to the gold panning process it will be a breeze. stack sizer screen winner vibratinggold vibrating screen. double deck vibrating screen. inquiry. please feel free to give your inquiry in the form below. we will reply you in 24 hours. name: fix screen flickering in windows 10 support.microsoft.comscreen flickering in windows 10 is usually caused by display drivers. to update your display driver, you'll need to start your pc in safe mode, uninstall your current display adapter, and then check for driver updates. start your pc in safe mode, then rightclick the start button and select device manager. spiral gold ore vibrating screen for goldvibrating screens for gold linear vibrating screen. 22 th july 2020 / products / shen /ments gold vibrating screen is a new type sieving equipment developed by winner group to meet the needs of the gold ore industry to screen materials. 2. gold vibrating screen consists of double sievebination, exciter, shield, motor, base assembly . contact me highfrequency vibrating screens high frequency vibrating screens are the most important screening machines primarily utilised in the mineral processing industry. they are used to separate feeds containing solid and crushed ores down to approximately 200m in size, and are applicable to both perfectly wetted and dried feed. gold processing,extraction,smelting plant design, equipment gold ore. prominer maintains a team of senior gold processing engineers with expertise and global experience. these gold professionals are specifically in gold processing through various beneficiation technologies, for gold ore of different characteristics, such as flotation, cyanide leaching, gravity separation, etc., to achieve the processing plant of optimal and costefficient process designs. vibratory equipment, vibrating screen .comxinxiang weiliang sieving machinery co., ltd., experts in manufacturing and exporting vibratory equipment, vibrating screen and 315 more products. a verified cn gold supplier on alibaba.com. beauty bar 24k golden pulse facial massager, t power supply requires one aa batteries (not included)vibrating handle can be used "on"or "off", vibration frequency: about 6000 times/minute. always use the material of the best quality 24k gold surface special treatment skin care tools. it is safe and efficient to promote the blood circulation.
» drywashing for goldthe way to get gold particles to settle quickly down through other lighter materials is to put the materials into a state of suspension. the vibrating device on this concentrator helps fine particles of gold work their way down through lighter materials that are being suspended by airflows. trommel screen vibrating screen. trommel screens are cheaper to produce than vibrating screens. they are vibration free which causes less noise than vibrating screens. trommel screens are more mechanically robust than vibrating screens allowing it to last longer under mechanical stress. x3 rinser (the roach) roco9the twodeck vibrating screen box was modified at daves requests as we fitted adjustable angle spray bars and nozzle heads to create higher water pressure for cleaning the material. nine spray bars were installed, four to the top and four to the bottom deck of the screen box, and we fitted a single spray bar at the end of the feed conveyor vibrating screen, vibrating screen suppliers and 14,710 vibrating screen products are offered for sale by suppliers on alibaba.com, of which vibrating screen accounts for 39%, screens &room dividers accounts for 1%, and display modules accounts for 1%. a wide variety of vibrating screen options are available to you, such as 3 months, 6 months. beauty bar 24k golden pulse facial massager, t power supply requires one aa batteries (not included)vibrating handle can be used "on"or "off", vibration frequency: about 6000 times/minute. always use the material of the best quality 24k gold surface special treatment skin care tools. it is safe and efficient to promote the blood circulation. x3 rinser (the roach) roco9the twodeck vibrating screen box was modified at daves requests as we fitted adjustable angle spray bars and nozzle heads to create higher water pressure for cleaning the material. nine spray bars were installed, four to the top and four to the bottom deck of the screen box, and we fitted a single spray bar at the end of the feed conveyor gold vibrating separator, gold vibrating separator suppliers 6,547 gold vibrating separator products are offered for sale by suppliers on alibaba.com, of which mineral separator accounts for 67%, vibrating screen accounts for 6%, and separation equipment accounts for 1%. a wide variety of gold vibrating separator options are available to you, such as 3 months. earthquake vibrating gold classifier gold prospecting and save your poor tired back! no stooping, squatting, bending or bucket shaking required with the "earthquake"vibrating bucket gold classifier! built with a uv and water resistant coating, the sturdy earthquake is extremely effective for screening both desert and river material, and has been tested using bucket style classifiers from 1/2 inch through 100 mesh screens. vibrating screen working principlethe simplest vibrating screen working principle can be explained using the single deck screen and put it onto an inclined frame. the frame is mounted on springs. the vibration is generated from an unbalanced flywheel. a very erratic motion is developed when this wheel is rotated. you will find these simple screens in smaller operations and rock quarries where sizing isnt as critical. as the performance of this type of screen isnt good enough to meet the requirements of most mining operations two variations of this screen has been developed. see full list on 911metallurgist.com in the majority of cases the types of screen decks that you will be operating will be either the horizontal screen or the inclined vibrating screen. the names of these screens do not reflect the angle that the screens are on, they reflect the direction of the motion that is creating the vibration. see full list on 911metallurgist.com the counterbalance weight will alternately promote and retard the direction of vibration depending upon where within each revolution the weights come opposite each other. see full list on 911metallurgist.com eccentric shaft is used in the inclined vibrating screen. there is an advantage of using this method of vibration generation over the unbalanced flywheel method first mentioned. the vibration of an unbalanced flywheel is very violent. this causes mechanical failure and structural damage to occur. the four bearing system greatly reduces this problem.why these screens are vibrated is to ensure that the ore comes into contact will the screen. by vibrating the screen the rock will be bounced around on top of it. this means, that by the time that the rock has travelled the length of the screen, it will have had the opportunity of hitting the screen mesh at just the right angle to be able to penetrate through it. if the rock is small enough it will be removed from the circuit. the large rock will, of course, be taken to the next stage in the process. see full list on 911metallurgist.com the reason for using two decks is to increase the surface area that the ore has to come into contact with. the top deck will have bigger holes in the grid of the screen. the size of the ore that it will be removed will be larger than that on the bottom. only the small rock that is able to pass through the bottom screen will be removed from the circuit. in most cases the large rock that was on top of each screen will be mixed back together again. see full list on 911metallurgist.com the main cause of mechanical failure in screen decks is the vibration. even the frame, body and bearings are affected by this. the larger the screen the bigger the effect. the vibration will crystallize the molecular structure of the metal causing what is known as metal fatigue to develop. the first sign that an operator has indicating that the fatigue in the body of the screen deck is almost at a critical stage in its development are the hairline cracks that will appear around the vibrations point of origin. the bearings on the bigger screens have to be watched closer than most as they tend to fail suddenly. this is due to the vibration as well. see full list on 911metallurgist.com in plant design, it is usual to install a screen ahead of the secondary crusher to bypass any ore which has already been crushed small enough, and so to relieve it of unnecessary work. very close screening is not required and some sort of moving bar or ring grizzly can well be used, but the modern method is to employ for the purpose a heavyduty vibrating screen of the hummer type which has no external moving parts to wear out the vibrator is totally enclosed and the only part subjected to wear is the surface of the screen. the vibrating screen has rapidly come to the front as a leader in the sizing and dewatering of mining and industrial products. its almost un uses vary from the screening for size of crusher products to the accurate sizing of medicinal pellets. the vibrating screen is also used for wet sizing by operating the screen on an uphill slope, the lower end being under the surface of the liquid. see full list on 911metallurgist.com the type 70 screen is usually made 4 ft. wide and from 5 to 10 ft. in length. for the rough work described above it can be relied upon to give a capacity of 4 to 5 tons per square foot when screening to about ½ in. and set at a slope of 25 to 30 degrees to the horizontal. the type 50 vibrator requires about 2 h.p. for its operation. generally, manufacturers of screening units of one, two, or three decks specify the many dimensions that may be of concern to the user, including the total headroom required for screen angles of 1025° from the horizontal. very few manufacturers show in their screen specifications the capacity to expect in tph per square foot of screen area. if they do indicate capacities for different screen openings, the bases are that the feed be granular freeflowing material with a unit weight of 100 lb/cu ft. also the screen cloth will have 50% or more open area, 25% of total feed passing over the deck, 40% is half size, and screen efficiency is 90%. and all of those stipulations are for a onedeck unit with the deck at an 18° to 20° slope. see full list on 911metallurgist.com a general rule of thumb for good screening is that: the bed depth of material at the discharge end of a screen should never be over four times the size opening in the screen surface for material weighing 100 pounds per cubic foot or three times for material weighing 50 pounds per cubic foot. the feed end depth can be greater, particularly if the feed contains a large percentage of fines. other interrelated factors are: see full list on 911metallurgist.com vibration is produced on inclined screens by circular motion in a plane perpendicular to the screen with oneeighth to ½in. amplitude at 7001000 cycles per minute. the vibration lifts the material producing stratification. and with the screen on an incline, the material will cascade down the slope, introducing the probability that the particles will either pass through the screen openings or over their surface. the main feature of the vibrating screen is the patented mechanism. in operation, the screen shaft rotates on two eccentrically mounted bearings, and this eccentric motion is transmitted into the screen body, causing a true circular throw motion, the radius of which is equivalent to the radius of eccentricity on the eccentric portion of the shaft. the simplicity of this construction allows the screen to be manufactured with a light weight but sturdy mechanism which is low in initial cost, low in maintenance and power costs, and yet has a high, positive capacity. see full list on 911metallurgist.com screen capacity is dependent on the type, available area, and cleanliness of the screen and screenability of the aggregate. below is a general guide for determining screen capacity. the values may be used for dried aggregate where blinding (plugged screen openings), moisture buildup or other screening problems will not be encountered. in this table it is assumed that approximately 25% of the screen load is retained, for example, if the capacity of a screen is 100 tons/hr (tph) the approximate load on the screen would be 133 tph. see full list on 911metallurgist.com it is possible to not have enough material on a screen for it to be effective. for very small feed rates, the efficiency of a screen increases with increasing tonnage on the screen. the bed of oversize material on top of the marginal particlesstratification prevents them from bouncing around excessively, increases their number of attempts to get through the screen, and helps push them through. however, beyond an optimum point increasing tonnage on the screen causes a rather rapid decrease in the efficiency of the screen to serve its purpose. see full list on 911metallurgist.com these efficiency determinations necessitate taking a sample of the feed to the screen deck and one of the material that passes over the deck, that is, does not pass through it. these samples are subjected to sieve analysis tests to find the gradation of the materials. the results of these tests lead to the efficiencies. the equations for the screen efficiencies are as follows: see full list on 911metallurgist.com where: f0 and f1, from analysis of the feed to the screen deck and fp and fs are from analysis of the feed passing over or through the screen. examples to show how these equations are used will help. they can be illustrated by simple diagrams and arrows for the flow of material in the following cases: case 1where the amount of oversize material is small and so the stratification is poor and the screen efficiency is low. case 1where the oversize material is small: as was discussed with screen efficiencies, there will be some overs on the first passes that will contain undersize material but will not go through the screen. this material will continue recirculating until it passes through the screen. this is called the circulating load. by definition, circulating load equals the total feed to the crusher system with screens minus the new feed to the crusher. it is stated as a percentage of the new feed to the crusher. the equation for circulating load percentage is: to help understand this determination and the equation use, take the example of 200 tph original or new material to the crusher. assume 100% screen efficiency and 30% oversize in the crusher input. for the successive cycles of the circulating load: therefore, circulating load = new feed to crusher times r = 200 x 0.429 = 85.8 tph see full list on 911metallurgist.com case 2where the amount of oversize material is large promoting better stratification and screen efficiency. the patented design of dillon vibrating screens requires just two bearings instead of the four used in ordinary mechanical screens, resulting in simplicity of construction which cuts power cost in half for any screening jobreduces operating and maintenance costs. with this simplified, lighter weight construction all power is put to useful work thus, the screen can operate at higher speeds when desired, giving greater screening capacity at lower power cost. see full list on 911metallurgist.com the vibrating screen is available in single and multiple deck units for floor mounting or suspension. the side panels are equipped with flanges containing precision punched bolt holes so that an additional deck may be added in the future by merely bolting the new deck either on the top or the bottom of the original deck. the advantage of this feature is that added capacity is gained without purchasing a separate mechanism, since the mechanisms originally furnished are designed for this feature. a positive method of maintaining proper screen tension is employed, the method depending on the wire diameter involved. screen cloths are mounted on rubber covered camber bars, slightly arched for even distribution. see full list on 911metallurgist.com standard screens are furnished with suspension rod or cable assemblies, or floor mounting brackets. initial covering of standard steel screen cloth is included for separations down to 20 mesh. suspension frame, fine mesh wire, and dust enclosure are furnished at a slight additional cost. motor driven units include totallyenclosed, ballbearing motors. the vibrating screen can be driven from either side. the driven sheave is included on units furnished without the drive. see full list on 911metallurgist.com the unit consists of the freely suspended screen body and a shaft assembly carried by the screen body. near each end of the shaft, an eccentric portion is turned. the shaft is counterbalanced, by weighted flywheels, against the weight of the screen and loads that may be superimposed on it. when the shaft rotates, eccentric motion is transmitted from the eccentric portions, through the two bearings, to the screen frame. see full list on 911metallurgist.com mining vibrating screens and rectangular separatorbelow are some of the materials our mining vibrating screens are able to screen and separate, helping to increase capacity and reduce cost: silica sand screening machines silica sand is a form of quartz that has become sand due to erosion by millennia of water and wind.
mining vibrating screens and rectangular separatorbelow are some of the materials our mining vibrating screens are able to screen and separate, helping to increase capacity and reduce cost: silica sand screening machines silica sand is a form of quartz that has become sand due to erosion by millennia of water and wind. goops firstever vibrator sold out almost immediately how goop's firstever double sided wand vibrator is a totally pretty and totally goopy sex toy. unsurprisingly, it sold out fast. earthquake vibrating gold classifier gold prospecting and save your poor tired back! no stooping, squatting, bending or bucket shaking required with the "earthquake"vibrating bucket gold classifier! built with a uv and water resistant coating, the sturdy earthquake is extremely effective for screening both desert and river material, and has been tested using bucket style classifiers from 1/2 inch through 100 mesh screens. gold shaking table mineral processing &metallurgya gold shaking table are basically lowcapacity machines used as last step in the gold upgrading process. the shaking table is a thin film, shear flow process equipment, that separates particle grains of its feed material based on the differences in their specific gravity, density, size and shape. mineral rich particles, from light to heavy and fine to coarse will be sorted by net effective weight. see full list on 911metallurgist.com a gold shaking tables riffles taper downwards in elevation in the direction the gold (and all heavies), precious metals concentrate discharge end of the table. this facilitates the ease with which mineral particles can move transversal to the tables axis or shakerline, therefore helping separation over the complete table length. riffle heights and pattern designs are selected based on the desired and required duty/function expected. see full list on 911metallurgist.com preparing several size fractions for tabling is usually achieved in a hydrosizer. if gold is present in both coarse and finely divided sizings at least three, or perhaps four separate size fractions must be treated, each under a different set of operating conditions. tables operate most efficiently with a closely sized feed. the slurry fans out across a smooth section of the surface until it reaches the riffles. the lighter and very fine particles are washed over the riffles and moved along the riffles by the reciprocating motion imparted to the deck while the heavier particles are held back. there are a few steps that need to be taken in order to get your gold shaker table to work efficiently. the first step that aspiring gold miners must take would be to make sure that all four corners of the table are level from forward to back. it is very important to anchor the bolts so that the shaking of the gold goes to the table and not through the frame. after you begin running your table, you may need to adjust your table from side to side to maintain an even flow of materials on both sides of the table. see full list on 911metallurgist.com the concentrates of heavy mineral and gold are discharged over the end of the deck. tailings are washed over the lower edge and a middlings fraction is taken off between the lower edge of the concentrate strip and the higher edge of the tailing strip. wash water usage is dependent upon the particle diameter and varies from as low as 0.7 m³/t/h of solids for slime decks, up to 56 m³/t/h for coarse solids separation. coarse fractions are usually treated at feed rates of up to 1 t/h using approximately 15 to 20 mm stroke lengths at around 280 rpm (wilfley table data). the stroke lengths of finer fractions are reduced to 915 mm with increased speeds of up to 325 rpm but, because of the corresponding lower film, thickness capacities may fall to around 0.25 t/h. the inclination of the deck is adjusted during operation using a handoperated tilting device. it is important following each adjustment to allow the table operation to settle down before making a fresh adjustment. the correct inclination is reached when the ribbon of concentrates is clearly defined and remains steady. see full list on 911metallurgist.com the extreme sensitivity of water depths and corresponding current depths to obtain f = 1, and the use of stationary tables as primary concentrating units, was probably the main reason for the consistently low (r.e. 6065%) gold recoveries of early dredgers. for such table types, the fluid forces are applied to the streambeds as a whole and ripples form, which keep the sand in orbital motion and provide for the denser particles to sink to the bed. deposition is most favoured by antidune conditions produced by freesurface flow at or near the supercritical state. such bed forms are in phase with the water surface and are produced in the rapid flow conditions of froude number f = 1. in this state of flow, the bed forms of the upper flow regime are stable. below f = 1 the flow is tranquil and shear forces are reduced. in reviewing recovery distributions of certain dredgers it was noted that some coarse gold reported with the tailing after passing through two stages of tabling and that fine gold did not concentrate noticeably down the line. endbump tables are hung by chains or in some similar manner, so as to be capable of movement, and receive a number of blows delivered on the upper end. these blows are given by cams acting through rods, or else the table is pushed forward against the action of strong springs by cams on a revolving shaft, and then being suddenly released is thrown back violently by the springs against a fixed horizontal beam. the movement of the pulp depends on the inertia of the particles, which are thrown backward up the inclined table by the blow given to the table, the amount of movement varying with their mass, and depending, therefore, both on their size and density. the vibrations produced by the percussion also perform the work of the rakes in destroying the cohesion between the particles, and a stream of water washes them down. the result is that the larger and heavier particles may be made to travel up the table in the direction in which they are thrown by the blow, by regulating the quantity of water, while the smaller and lighter particles are carried down. these machines yield only two classes of material, headings and tailings. one such machine, the gilpin county gilt edge concentrator was devised in colorado, and has displaced the blanket sluices at almost all the mills at blackhawk. it consists (fig. 46) essentially of a castiron or copper table, 7 feet long and 3 feet wide, divided into two equal sections by a 4inch square bumpingbeam. the table has raised edges, and its inclination is about 4 inches in 5½ feet at its lower end, the remaining 1½ feet at the head having a somewhat steeper grade. the table is hung by iron rods to an iron frame, the length of the rods being altered by screw threads, so as to regulate the inclination to the required amount. a shaft with double cams, a, making 65 revolutions per minute, enables 130 blows per minute to be given to the table in the following manneron being released by the cam, the table is forced forward by the strong spring, b, so that its head strikes against the solid beam, c, which is firmly united to the rest of the frame. see full list on 911metallurgist.com in a sluice box, the settling of heavy minerals between the riffles requires frequent stirring to prevent the riffle spaces from blinding. this also disturbs the gold, which then moves progressively downsluice. frequent cleanups are needed to avoid excessive loss. boxes may be used in parallel to avoid loss of production time. one box is kept in operation while cleaning up in the other. when materials are washed by the clean water they are supposed to drop into 3 hoppers/launders underneath the table. there is a centre launder that will gather the purest portions of gold while the two outside launders will gather some gold, though not as much. see full list on 911metallurgist.com you see here the parallel with a gold concentrating table? generally speaking, a gold shaker table will see the adjustments as follows: for a roughing operation: table capacity may be as high as 200 tons per 24 hr. on a fully riffled deck 4 by 12 ft. treating minus 3mm. sulphide ore having a specific gravity of about 3.0 (roughing duty), or 500 tons per 24 hr. but table capacity may be as low as 5 tons per 24 hr., or even less, for fine ore (minus 0.3 mm.) if there is only a small specificgravity differential between minerals. see full list on 911metallurgist.com effect of deck roughness: the foregoing analysis is based on the postulate that the deck is perfectly smooth. if the deck is rough, i.e., if it has at its surface some recesses capable of partly shielding fine particles from the rub of the fluid, the slope required to move the particles by either rolling or sliding will be increased. at the same time such an effect, while present also for large particles, may be so much smaller for them as to be imperceptible. the relationship of critical angle to size obtained above will therefore not hold for rough surfaces. the problem is analytically complex and it is nevertheless a problem that might well be explored further if a full insight is desired into the mechanism of flowingfilm concentration. see full list on 911metallurgist.com a coarse feed can be treated in larger amounts than a fine feed. it would seem that the treatable tonnage increases at least as the square of the average size (theory indicates that it increases as the cube of the particle size). see full list on 911metallurgist.com a roughing operation is preferably conducted on a fully riffled deck. these decks have a greater capacity because the particles are treated throughout the deck in the form of a teetering suspension many particles deep instead of as a restive layer one particle deep. such decks do not provide flowingfilm concentration but some sort of jigging. on the other hand, a cleaning operation is preferably performed on a partly riffled deck. see full list on 911metallurgist.com it is clear that minerals of different specific gravity must be present the greater the spread in specific gravity between minerals, the greater the capacity since that sort of condition permits crowding without considerable penalty. the effect of locked particles on capacity of tables should also be recognized. these particles behave in a fashion intermediate between that of pure particles of their constituent minerals. it is as if a threeproduct separation were sought in which one of the products would guidein specific gravity between the two other. see full list on 911metallurgist.com operating a shaking table is cheap as power requirement per table are typically low. most of the energy is expended to move the deck, which must therefore be as light as is consistent with rigidity. laboratory gold shaking table testing report. see full list on 911metallurgist.com during the fast shaking process, you will gradually begin to see the separation of materials. for example, when you have dirt and rocks that contain materials like lead, sulfides and gold, because of the varying weights of these different materials, you will see these materials venture off in different directions on the shaker table. the lead and the sulfides will be carried over to the right side of the table while the pure gold will be carried over to the far left side of the table. see full list on 911metallurgist.com there is one term to remember when professional gold miners describe the actions of a gold shaker table. when professional gold miners say that small particles of gold are being carried through the grooves, they are referring to the ripples that you can plainly see on the shaker table. when they say that there is an overflow of materials like black pyrrhotite, white quartz, silver and gold on the grooves, then this is a good thing. see full list on 911metallurgist.com gold shaker tables are environmentally friendly (chemical free) for recovering pure gold as they can play an important part in reducing the use of mercury by gold miners. with gold shaker tables miners dont need to resort to mercury amalgamation or cyanide to recover gold. the filter will constantly need to be removed and cleaned as it will get dirty even after using the table a few times. see full list on 911metallurgist.com miners can design and construct a basic shaking table out of cheap materials that are affordable in local stores, including a drive mechanism that contains bicycle gears, chains and rubber bands that are made from car tire inner tubes. the drive mechanism for a gold shaker table can be a hand crank or it can contain parts of a motorcycle frame and engine. if one prefers to use a motor for his or her table, either an electric motor or a motor that runs on diesel fuel would be the ideal options. it is important to keep in mind that there is no one specific way to create your own gold shaker table system. many professional gold mining organizations will create tables of different shapes and sizes to cater to the needs of their customers. some shaker table systems will feature machines that can crush hard rocks, which are referred to as jaw crushers. the speeds of shaker table systems will vary as they can shake from hundreds to thousands of pounds of materials per hour. see full list on 911metallurgist.com vibrating screens vibramechvibrating screens. vibramech vibrating screens are custom designed for client needs and cover a vast range of sizes and unique process applications. our screen design makes use of finite element method and strain gauge analysis to prove structural integrity. how to build a motorized trommeland why on earth you would sep 26, 2014 · amazing stuff, if you can get to it. a few years ago brian built a manual compost sifter, just a big screen within a frame, and he shook small batches of compost through it, separating the fine 3earthquake vibrating gold classifierwelcome fellow prospectors! this site is dedicated to our hobby and finding more gold! this classifier was designed to save your back and move more material. never stoop, squat or shake a bucket again! enjoy the site and videos. we know you'll find more gold using the "earthquake". the best classifiers, sieves, &screens for gold prospectors may 15, 2016 · screen classifier sets . the 1/4 classifier is a good basic size if you just want one, but for optimal gold recovery its a good ideal to get several different screen sizes. buying a set will allow you to sift down to extra fine material so that when you finally get to the gold panning process it will be a breeze. gold vibrating separator, gold vibrating separator suppliers 6,547 gold vibrating separator products are offered for sale by suppliers on alibaba.com, of which mineral separator accounts for 67%, vibrating screen accounts for 6%, and separation equipment accounts for 1%. a wide variety of gold vibrating separator options are available to you, such as 3 months.