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Metal Recovery from Secondary Copper Converter Dust by Ammoniacal Carbonate Leaching.

PB91102293

Publication Date	1988
Personal Author	Gabler, R. C.; Jones, J. R.
Page Count	16
Abstract	Effective recycling or disposal of flue dusts is a continuing problem, particularly for secondary smelters treating low-grade Cu scrap. The Bureau of Mines investigated a variety of flue dust treatment approaches and demonstrated the technical feasibility of a bench-scale alkaline method that includes leaching, cementation, precipitation, and roasting. Flue dust was leached at room temperature with an alkaline solution of (NH4)2CO3 and NH4OH to solubilize ZnO and Zn metal. Some copper, lead, tin, and most of the zinc were dissolved in the leach step. Copper, lead, and tin were recovered in the cement product. The possibility for recycling of reagents, lower energy demand, and low environmental impact make this method economically and environmentally attractive for recycling secondary copper smelter flue dusts.
Keywords	Materials recovery Flue dust Smelting Air pollution control Leaching Dust control Precipitation(Chemistry) pH Roasting Secondary materials industry Waste utilization Waste recycling Ammonium carbonates Copper industry Feasibility studies Cementation
Source Agency	Bureau of Mines
NTIS Subject Category	68C - Solid Wastes Pollution & Control 68A - Air Pollution & Control 71N - Nonferrous Metals & Alloys 99F - Physical & Theoretical Chemistry
Corporate Authors	Bureau of Mines, Albany, OR. Albany Research Center.
Supplemental Notes	Library of Congress catalog card no. 88-600180.
Document Type	Technical Report
Title Note	Rept. of investigations/1988.
NTIS Issue Number	199101

Metal Recovery from Secondary Copper Converter Dust by Ammoniacal Carbonate Leaching.

Metal Recovery from Secondary Copper Converter Dust by Ammoniacal Carbonate Leaching.
PB91102293

Publication Date	1988
Personal Author	Gabler, R. C.; Jones, J. R.
Page Count	16
Abstract	Effective recycling or disposal of flue dusts is a continuing problem, particularly for secondary smelters treating low-grade Cu scrap. The Bureau of Mines investigated a variety of flue dust treatment approaches and demonstrated the technical feasibility of a bench-scale alkaline method that includes leaching, cementation, precipitation, and roasting. Flue dust was leached at room temperature with an alkaline solution of (NH4)2CO3 and NH4OH to solubilize ZnO and Zn metal. Some copper, lead, tin, and most of the zinc were dissolved in the leach step. Copper, lead, and tin were recovered in the cement product. The possibility for recycling of reagents, lower energy demand, and low environmental impact make this method economically and environmentally attractive for recycling secondary copper smelter flue dusts.
Keywords	Materials recovery Flue dust Smelting Air pollution control Leaching Dust control Precipitation(Chemistry) pH Roasting Secondary materials industry Waste utilization Waste recycling Ammonium carbonates Copper industry Feasibility studies Cementation
Source Agency	Bureau of Mines
NTIS Subject Category	68C - Solid Wastes Pollution & Control 68A - Air Pollution & Control 71N - Nonferrous Metals & Alloys 99F - Physical & Theoretical Chemistry
Corporate Authors	Bureau of Mines, Albany, OR. Albany Research Center.
Supplemental Notes	Library of Congress catalog card no. 88-600180.
Document Type	Technical Report
Title Note	Rept. of investigations/1988.
NTIS Issue Number	199101