The rapid increase in reliability, the low cost of operation, the ready application of safety devices, and the growing availability of central-station power have made
The nature of slimes handled in the treatment of gold- and silver-ores has been discussed in technical literature to a considerable extent. The subject of
The term attapulgite and palygorskite are synonomous. Most mineralogists use the term palygorskite but attapulgite is the preferred industrial term. The structural formula of attapulgite
There is a marked particle size effect on both R and K. Table V gives an example of increasingly finer grinds in flotation with a
During the last few years, one of the great problems in the milling of all ores has been that of grinding. This subject involves not
The graphic methods and records described in this article have been developed, with satisfactory results, for the use of executives of the Chino Copper Co.,
How to Remove Copper from Fine Gold Prevention of copper entering the final bullion has been the principal objective of all experimental work performed on
Recovery of Metals from Mattes and Slags Long ago, mattes and slags, which were the end products of the matte smelting process described in Part
Before processing by the gold refinery, gold can be extracted from ore by the following series of operations: Coarse crushing; Fine grinding; Straking for free
The beginning history of fire assaying can be traced to the finds in Troy II (about 2600 B.C.) and in the Cappadocian Tablets (2250-1950 B.C.).