Pennsylvania has ample reserves of high-alumina clays which are potential sources of alumina, but many of these clays contain large amounts of iron, which makes
Expanded markets for copper in the past few years and a consequent search for new ore bodies have revitalized the widely known but seldom applied
Table of ContentsComposition of Raw MaterialsFly Ash Market In 1966, approximately 125 million tons of raw materials, exclusive of fuel, air, water, and power were
Table of ContentsBreakingReagentsReagent Recovery Because of the extensive surface area of oil droplets in emulsions, emulsion flotation offers possibilities for the recovery of finely divided
A study on the sulfuric acid extraction of alumina from some Pennsylvania ferruginous clays indicated that the published electrolytic method seems to be more efficient
Table of ContentsColumn Leach StudiesNature of Iron Species involved in Dump LeachingStudy of the Chemical Composition of DumpsIron Oxidation and Hydrolysis The dump leaching of
Table of ContentsDesign Criteria for Bin FeedersHopper and Bin DesignBelt FeedersApron FeedersVibratory FeedersFeeder LoadingCorrelation of Solids Flow Theory with Actual Bin OperationBin Operations use of
In most industrialized countries, the largest element of the mining industry in physical volume is that devoted to the extraction and processing of materials for
Table of ContentsInter-relationships of Chemistry, Equipment Design, and CostsCapital Costs versus Operating Costs Chemistry plays a more important role in milling operations than is generally
Silica flotation with amine salts has been a commercial process for years in certain non-sulfide mineral systems. Phosphate rock and feldspar deposits are notable examples.