PORTABLE SAMPLING PLANT
A great deal of interest has developed in the new portable sampling plant recently designed by Engineers. The plant is substantially as shown but may be adapted easily to the specific needs of the user at the factory or, because of the versatile design, in the field. The functions of crushing, grinding and sampling are […]
Mini Jaw Crusher – Mini Rock Crusher
MINI JAW ROCK CRUSHER FOR SALE
Bone Ash Cupels
In order to get a preliminary view of the question of gold absorption in cupelling gold bullion, certain samples of very pure gold, which were being sent out to various laboratories in the Mint service for comparative assaying, mere assayed in sets of sis with three proofs. The nine ctipe!i were arranged in the muffle […]
DRY Shaking Air Table to Recovery Gold
Air tables use a shaking motion similar to that of shaking tables, but instead of water, air is used to separate heavy minerals. The table deck is covered with a porous material and air is blown up through the deck from a chamber underneath. The chamber equalizes the pressure from the compressor and thus ensures […]
How to use a sluice box
Another widely used sample washing device is the ordinary sluice box which in its smaller form is sometimes loosely but erroneously called a “long tom”. A sluice in its simplest form is no more than an elongated, rectangular trough fitted with transverse cleats or some other form of riffled bottom. It is operated by essentially […]
Marcy Scale
Determine the solid content of a mixture a fix volume of slurry is poured into the sample container, this sample volume is fixed because the container is filled until the slurry is even with or over flows through the opening on its side. The container is then hang on the scale and the weight of […]
Gold Refining Machine
The guard pot, with the clay pot in it containing 2 or 3 ozs. of fused borax, is placed in the furnace, and is heated gradually until the bottom of the clay pot is dull red. The ingots (of which the larger are slipper-shaped) to be refined, amounting in all to 650 to 720 ozs. […]
Gold Melting Furnaces: Key Features and Applications
The furnace used for melting gold bullion is of simple construction. It may be round or square, with walls consisting of an outer layer of ordinary brick and an inner layer, at least 4 inches thick, of the best firebrick. There is often a complete outer casing of iron, which is useful in keeping the […]
Rock Crushers
This invention relates to jaw rock crushers. In such known crushers, eccentrics or unbalanced rotors drive one or two oppositely situated swing jaws. The disadvantage of the known jaw rock crushers in comparison with known gyratory crushers lies in their cyclical work. i.e. the jaw makes one power stroke and one idle stroke during one […]
Chain Mill
A Chain Mill is a total amateur’s tool for “crushing or grinding” rock. It is a set of chains attached directly at the end of a 1700+ RPM motor. The chain will beat your rock to bug-dust, pulverise it, and any gold it might contain, into a size fraction so fine you will not be […]