Record Display for the EPA National Library Catalog


Main Title Oxidation of Pyrites in Chlorinated Solvents.
Author Boro, Joseph A. ; Brennema, Donald R. ; Tro, Joseph C. ;
CORP Author NUS Corp., Pittsburgh, Pa. Cyrus Wm. Rice Div.
Year Published 1972
Report Number EPA-14010-FMM; R2-72-069;
Stock Number PB-214 455
Additional Subjects ( Pyrite ; Chlorination) ; ( Hydrometallurgy ; Pyrite) ; ( Oxidation ; Pyrite) ; Spoil ; Oxygen ; Coal mines ; Water pollution control ; Sulfide minerals ; Iron ores ; Mine waters ; Chlorine ; Regeneration(Engineering) ; Organic solvents ; Chlorine aliphatic compounds ; Ultraviolet radiation ; Reaction kinetics ; Iron chlorides ; Water pollution control ; Mine wastes
Library Call Number Additional Info Location Last
NTIS  PB-214 455 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 54p
The purpose of the study was to develop methods for extracting sulfur and iron compounds from pyritic waste materials, producing a final refuse that is incapable of causing water pollution, and at the same time, conserving useful mineral resources. The primary method under investigation was the chlorination of pyrites in non-aqueous solvents. An attractive feature of the proposed method was its cyclic nature. Test results indicated that the successful extraction of sulfur and iron compounds depended upon the continuous addition of chlorine gas to the system. The expected replacement of chlorine by ferric chloride and sulfur dichloride was not achieved under conditions of the study. Recycling solvents through beds of pyrite, elevated temperatures, and treatment in ultra-violet radiation yielded slight improvements in reaction rate.