When the amount of ore in the mills was the same, no appreciable difference between batch and continuous open-circuit ball-mill grinding was found. This should
As part of the U.S. Department of the Interior, Bureau of Mines, mission to assure a viable domestic minerals and materials economy, research is being
In the study of ball mill grinding at the International Experiment Station of the United States Bureau of Mines at Salt Lake City, Utah, it
We investigated chemical methods for producing high-purity gold from precious-metal-bearing zinc precipitates and steel wool cathodes. Precious-metal-bearing zinc precipitates and steel wool cathodes are unrefined
I have always been amazed at the amount of knowledge the Alchemists in the Middle Ages possessed regarding chemistry, metallurgy and the precious metals. Yet
The increasing demand for titanium minerals, especially rutile, has sparked interest in the abundant domestic titanium resources of the United States. Although 93 percent of
Many types of ore crushing and grinding equipment, such as hammer mills, rod mills, and ball mills, subject wear parts to repetitive impacts. The wear
A new and promising method for transporting raw materials from a mine is by pneumatic pipeline. This method uses a flow of air to transport
The pin-on-drum abrasive wear test involves high-stress, two-body abrasive wear. One end of a cylindrical pin specimen is moved over an abrasive paper, abrading material
When a lump of ore is crushed by the impact between two balls in a ball mill, it is considered high-stress, three-body abrasive wear. The