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Pyrometallurgical upgrading of lead blast furnace mattes.

Authors
Morris-AE
Source
NTIS: PB 299-918; 1979; :1-42
Link
NIOSHTIC No.
10009523
Abstract
A byproduct of lead smelting is a matte which consists mostly of lead and copper sulfides. Experiments were conducted to determine the feasibility of removing lead from molten matte by adding iron as a reducing agent. The effectiveness of iron at 1,000 deg and 1,100 deg c was a function of matte composition, but not of temperature except near iron saturation. The lead content of matte could be decreased to as low as 9.0 to 11.6 wt-pct (2.3 to 3.0 At. pct) at 1,000 deg c, depending on composition. The effect of oxygen in the matte on lead recovery from iron-saturated mattes was also investigated. The addition of oxygen further decreased the lead content, and higher recoveries of lead were obtained.
Keywords
Lead compounds; Lead smelting; Smelting; Lead sulfide; Copper; Sulfides; Oxygen; Iron; Copper compounds; Metallurgical processes; Metallurgy; Blast furnaces
CAS No.
7439-92-1; 1317-40-4; 7782-44-7; 7439-89-6
Publication Date
19790101
Document Type
CP; Final Contract Report
Fiscal Year
1979
NTIS Accession No.
PB-299918
NTIS Price
A04
Identifying No.
OFR 89-79
NIOSH Division
RORC
Source Name
NTIS: PB 299-918
State
MO
Performing Organization
University of Missouri--Rolla
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