Long Ball Mills
Flotation Tests with Homemade Flotation Equipment DIY
By modelling the basic flotation equipment from the early 1900’s you see that most can hobby prospectors can build or assemble basic froth flotation equipment using all the machines and concepts explained below and perform home-based flotation tests. Although the subject of testing for flotation has been well presented in T. J. Hoover’s book on […]
See-saw Crusher
The See-Saw Crusher is made of a very heavy stone or steel ‘see-saw’ crushers are rolled over the material which is to be crushed with the aid of a lever arm. The material is placed on a flat stone or steel surface and the product is similar to that from a roller crusher.
Ball Casting Machine
This machine is designed especially to make cast steel balls, utilizing the newly patented Payne hot top principle. This machine will produce solid cast alloy steel balls equal in quality to the best forged steel balls, at a very low cost. The Ball Casting Machine consists essentially of a rotary turntable and thirty-six copper ball […]
Arrastra
The Arrastra was also one of the earliest crushing machines in use in America, being introduced at the same time as the Patio process—i.e., about 1557—and is still in wide use in Mexico, although chiefly in the treatment of silver ores by the Patio process. It is a circular, shallow, flat-bottomed pit, 10 to 20 feet […]
Gold Amalgamation Equipment
AMALGAM PRESS The Amalgam Press is used wherever the process of amalgamation is practiced. The amalgam is wrapped in a wet chamois skin and inserted in the press, which extrudes the surplus amalgam. The press consists of a steel cylinder, slotted on the sides and perforated on the bottom. The steel piston is forced into […]
Pachuca Tank
Pachuca tanks are used for a wide variety of leaching and mixing operations in the minerals industry. Previously, an equation was derived to predict the circulation in a Pachuca tank with full height draft tube risers. This analysis was subsequently verified with data from a large bore air-water flow loop used. However, the equation was based on the assumption that the solids settling velocity was […]
Laboratory Flotation Cells
The 500, 1000, and 2000 gram Laboratory Flotation Cells have been proved by mining, chemical and government laboratories and schools all over the world, to produce reliable results which can be duplicated in actual milling installations because they incorporate all of the basic principles of the commercial size machines. The 50-gram unit is designed to complete this line of Batch Laboratory […]
Diesel Engines
The information below is provided as representative of medium HP Diesel engines of four, six, and eight cylinders. Many other sizes and types are available and variations on four, six, and eight cylinder engines, such as in stroke, bore, and displacement—giving higher or lower HP ranges, may be obtained. Performance Curves are for maximum, rated, […]
Determining Power Factor
Where power is purchased, and is billed on a power factor basis, the installed power company meters will provide a means of determining overall plant power factor. This may be the average power factor for the billing period, usually a month, or the power factor at time of maximum kilowatt demand, or other values depending […]