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Reduction of Zinc Sulfide With Iron.

Authors
Sanker-PE; Oden-LL; Campbell-TT
Source
PB 251 991 :13 pages
Link
NIOSHTIC No.
10007645
Abstract
The Bureau of Mines conducted small-scale batch and semicontinuous tests on the reduction of zinc sulfide with iron according to the reaction zns + fe -> fes + zn to determine reaction kinetics in the temperature range 1,000 deg to 1,400 deg c and to investigate the potential use of a scrap iron reductant. Batch tests indicated that a temperature of at least 1,300 deg c with a 1:1 mole ratio of fe to zns is needed for good zinc recovery. Semicontinuous tests were conducted, using four zinc concentrate samples, containing various percentages of copper, cadmium, and lead, which were reacted with iron and iron contaminated with iron oxide and tin in an externally heated graphite furnace. Analysis of the zinc metal and fes matte reaction products showed cadmium to be entirely in the zinc metal, copper to be in the fes matte, and lead to be about 60 pct in the zinc metal and 40 pct in the matte. Tin reported to the matte, and none was detected above the 0.05-Pct level in the zinc. Sulfur dioxide was not detected in the offgas when up to 20 pct of the iron was replaced by fe2o3.
Publication Date
19760101
Document Type
IH; Report of Investigation;
Fiscal Year
1976
NTIS Accession No.
PB-251991
NTIS Price
A03
Identifying No.
RI 8114
NIOSH Division
ALRC;
Source Name
PB 251 991
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