In the clay-HCl miniplant, leaching sized, calcined kaolin with HCl was carried out in 50-gal, glass-lined continuous, stirred tank reactors (CSTR’s). Originally four reactors arranged
There has been considerable interest in developing methods to economically produce cell-grade alumina from nonbauxitic materials. In the United States, this interest stems principally from
The AMAX sulfuric acid leaching process involves countercurrent digestion of nickeliferous laterite ore at high pressure and at atmospheric conditions. After solid/liquid separation, the nickel
Based upon diamond drilling of 100 holes the reserve is estimated at 2,300,000 tonnes containing 8% graphite. The ore is found in two zones. Both
Management of mine drainage and mineral processing waste systems is a serious problem that could have major impacts on the U. S. mineral industry. Federal
The design of a pebble crushing circuit as an integral part of a North American style primary autogenous or semi- autogenous grinding circuit presents certain
The Mechanism of Sulfur Oxidation in Pyrite is base on what is generally believed as anodic oxidation of pyrite occurs according to the reactions to form
Significant advances have taken place in the treatment of refractory gold ores and concentrates during the past decade. In sulfide ores, pyrite is the most common
The behavior of fine mineral particles in a slurry is difficult to control, presenting a serious problem in many processes. At fine particle sizes, gravitational
The basic principle of this separation method was already defined in the middle of the nineteenth century. However, a change over for the treatment of