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Introduction of Sulfur Into Copper Converter Slags to Produce Copper Matte.

Authors
Paige-JI; Anable-WE
Source
MISSING :16 pages
Link
NIOSHTIC No.
10006381
Abstract
As part of a continuing effort to develop technology that maximizes mineral and metal recovery from domestic resources, the Bureau of Mines investigated a method to totally utilize copper converter slags without recycling them back through the matte smelting furnace. The research was directed toward (1) recovering the contained copper in converting slags by producing a recyclable copper-iron matte, (2) carbothermically reducing the slags to recover the iron, and (3) producing slag wool from the depleted slags. This report deals with the reduction of three industrial converting slags, containing 2.0 to 7.3 wt-pct cu, in an 800-kva electric arc furnace to produce a recyclable copper-iron matte. The addition of sufficient iron pyrite to provide 29 to 113 pct of the stoichiometric sulfur (based on producing 40-pct-cu matte) produced a recyclable matte (36 to 61 pct cu) at an energy consumption of 520 to 700 kwh per ton of solid material charged. The expected energy saving for treating molten slag is an electric furnace (5- to 9-mva range) is about 400 kwh per ton of molten slag treated.
Publication Date
19820101
Document Type
IH; Report of Investigations
Fiscal Year
1982
NTIS Accession No.
NTIS Price
Identifying No.
RI 8687
NIOSH Division
ALRC;
Source Name
MISSING
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