Classification and tabling of difficult ores with particular attention to fluorspar
William Hawes Coghill, United States. Bureau of Mines, University of Missouri. School of Mines and Metallurgy
U.S. Govt. print. off., 1929 - Technology & Engineering - 40 pages
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0verflow 10-spigot classification 2.95 specific gravity 24 hours 24 mesh 3.3 specific gravity 35 mesh 48 mesh Assay per cent barite bution CaC0s Assay CaF2 Distribu calcite and fluorspar calculation cent Assay cent of CaF2 cent of distribution cent of Si02 cent weight Mesh classified feed Classifier and table classifying a fluorspar discharge Distri distribution of feed efficiency number force diagram free galena gangue graded grains heavy liquids heavy mineral Hence hindered settling hindered-settling ratio jigging later spigots Legend limiting screen mean diameter mean mesh metallurgist number of spigots ofCaC0s operator ore-dressing engineer overflow prepares the feed quarter-size table quartz quartzite respective spigots sand Screen analyses settling ratios shown in Table shows Si02 Assay Si02 Distribu sieves silica sized fluorspar Spigot 15 spigot 20 spigot 9 sulphide Table 16 tenor tion of CaC0s tion of CaF2 tion of Si02 tons per 24 weight Mesh 10+12 weight Mesh Weight