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rock crushers gold prospecting mining equipment detectors the average miner can instead purchase a crazycrusher manual rock crusher or an electric or gas powered rock crusher and get the gold out in smaller batches. crushing rock to recover gold can be easier, faster, and much more profitable than prospecting in overworked streams and rivers. rock crushers 911metallurgistthe size requirement of the primary crusher is a function of grizzly openings, ore chute configuration, required throughput, ore moisture, and other factors. usually, primary crushers are sized by the ability to accept the largest expected ore fragment. jaw crushers are usually preferred as primary crushers in small installations due to inherent mechanical simplicity and ease of operation of these machines. additionally, jaw crushers wearing parts are relatively uncomplicated castings and tend to cost less per unit weight of metal than more complicated gyratory crusher castings. the primary crushermust be designed so that adequate surge capacity is present beneath the crusher. an ore stockpile after primary crushing is desirable but is not always possible to include in a compact design. many times the single heaviest equipment item in the entire plant is the primary crusher main frame. the ability to transport the crusher main frame sometimes limits crusher size, particularly in rem see full list on 911metallurgist.com the screen or screens in a small crushing plant should be oversized and of the fourbearing type if possible. installed screens should be standard sized and, if multiple screens are used, all screen panels should have the same dimensions. the screen layout should be such that screen decks are readily accessable. screens should be located for optimum visibility and required chutes should be designed with the maximum open area possible. to minimize the height of the undersize chute, discharge conveyors should be oriented along the long dimension of the screen. the slope of the discharge conveyor should be as nearly parallel to the slope of the screen as is possible. the utilization of rubber top decks should be considered due to the longevity of this material. the use of tall chutes should be avoided or, if absolutely necessary, should be provided with dead beds and cleanout ports. spare screen panels should be provided with the original equipment since considerable time can lapse bet see full list on 911metallurgist.com although design calculations may indicate overcapacity, no conveyor in any crushing plant should be less than 0.5 meters wide and, in actuality, it is best to standardize on a minimum belt width of 0.67 meters throughout the crushing system. design should be such that conveyor troughing and return idlers can be lubricated from one side. barely are small conveyors designed and manufactured with walkways on both sides of the belt. in smaller installations some designers prefer to specify permanently selflubricated idlers. the design of tail pulleys should be oriented toward ease of cleanup. the lowest point of any belt should be at least 0.6 meters above the floor. rock deflectors or plows located immediately in front of tail pulleys above the returning belt can serve to prevent rooks from cycling between the belt and pulley thereby increasing belt life. in tunnels, beneath stockpiles, and in other locations below grade, provisions must be made to include the cleanup sumps and pumps see full list on 911metallurgist.com fine ore bins must be sized to provide the surge capacity required for continuous operation of the flotation concentrator. the usual configuration for plants processing 500 metric tons per day or less is a single cylindrical bin, 10 meters in diameter and 10 meters high, fabricated of rolled plate which is welded or bolted on site. this type bin is discharged through a slot which is approximately as long as the diameter of the bin. under no circumstances should the discharge slot in the bin be less than 0.6 meters wide. a 1 meter wide slot the length of the bin discharged by a 1.25 meter wide variable speed conveyor has proven to be an excellent system. even though this installation appears to be overdesigned, it will pay for itself the first time that the ore becomes wet and/or sticky. if the crushing plant and fine ore bin are in close proximity and if the typography is favorable, one conveyor can be eliminated if the finishing screen is located atop the bin (see figure 3). in thi see full list on 911metallurgist.com 3small gold crushers, small gold crushers suppliers and pe150x250 jaw limestone crusher rock crushing machine, gold ore breaker stone jaw crusher small us $1300$1800/ set 1.0 sets (min order) 6 yrs henan green machinery co., ltd. rock crushers gold prospecting mining equipment detectors crushing rock to recover gold can be easier, faster, and much more profitable than prospecting in overworked streams and rivers. with prices starting at less than $500 for a manual crusher, you may want to consider this timesaving method for getting the gold! rock crushers 911metallurgistjaw crushers are usually preferred as primary crushers in small installations due to inherent mechanical simplicity and ease of operation of these machines. additionally, jaw crushers wearing parts are relatively uncomplicated castings and tend to cost less per unit weight of metal than more complicated gyratory crusher castings.