The trend of the past five years toward larger mill sizes shows no signs of reversal. Indeed, the current view of capital requirements for projects,
Lead concentrates from Kuroko (black ore) mines, which contain Cu 4 – 7%, Pb 55%, Zn 3 – 7%, As 0.5 – 0.9% are treated
Dialkyldithiophosphinates are a new class of flotation collectors for base metal sulfide ores. Structurally, they are quite different from the conventional collectors such as mercaptans,
The Density Separator is basically a hindered settling classifier with automatic control features that provide steady, sharp classification irrespective of extreme variations in dry tons
Bauxite, dolomite, and magnesite are natural occurring minerals that are used extensively in the manufacture of refractory products. In addition, magnesia produced from seawater or
The purpose of a surge bin between two machines is to permit either of the two machines to continue production for at least some of
In situ leaching has been an attractive means of recovering uranium from small or low grade ore deposits. The process involves injecting a lixiviant, typically
An air-pulsated jig has teen widely adopted as a main coal washer. It may be mainly because of its many technical and economic features such
Acid Mine Drainage from underground coal mines and coal refuse piles is one of the most persistent industrial pollution problems in the United States. Pyrite
Many of the major copper ore bodies throughout the world contain chalcocite (79.9% Cu) as the principal copper mineral, yet the grades of copper concentrates