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A byproduct of copper melting is the production of slag. CalChem purchases this waste stream material and brings it to their facility in Globe, Arizona where it is cleaned, separated and crushed to prepare it as copper smelter feed. of the slag endsup at a copper smelter which is an environmentally friendly alternative to landfill dumping or the uncertainty of selling offshore.
Roasting of copper converter slag containing % copper, % nickel and % cobalt with ammonium sulphate open to atmosphere has been carried out in order to achieve sulphation of copper
Smelter slag is obtained in the process of metallurgical converting of copper concentrate in the Smelter Plant in Bor, Serbia. Today, the reserves of this material are evaluated at about more of a year, with the average copper content of %. Production of copper concentrate by
Smelter slag is obtained in the process of metallurgical converting of copper concentrate in the Smelter Plant in Bor, Serbia. Today, the reserves of this material are evaluated at about more of a year, with the average copper content of %. Production of copper concentrate by
concentrate, various mining operations have initiated the recovery of copper from dumped slag. The typical process uses crushing, milling and flotation. These operations create excessive liner wear rates during crushing and milling because the bond work index of copper slag is 22 kWh/t and this is considered a very hard slag.
White Pine reverberatory furnace slags contained economically recoverable amounts of copper for a variety of reasons. Among them: White Pine concentrates yield extremely high matte grades (65+% Cu) and viscous slags. The viscous slags hinder matte settling causing matte prill entrapment in the slag. White Pines total refined copper output is accomplished through fire refining
to produce a discard quality slag (expected to be less than wt% Cu). In this way the RHF slag mass and its copper content has a big influence in the copper recovery of the new Ilo Smelter. This paper discusses the operational issues and the actions that have been implemented in order to obtain a discard RHF slag.
Under optimum conditions, more than 95% of copper could be recovered by only a limited recovery of cobalt, nickel and zinc could be achieved by roasting the preroasted slag with pyrite at 550#176;C
Copper slag was characterized and processed. The pyrometallurgical processing prospects to generate utilizable materials were arrived at through rigorous thermodynamic analysis. Carbothermal reduction at elevated temperature (near 1440#176;C) helped recover a majority of the metal values (, Fe, Cu and Mo) into the ironrich alloy product which can be a feed material for steel making.
Laboratory and pilot plant investigations have indicated that copper recoveries of 50% can be achieved with fine grinding and flotation of a copper reverberatory furnace slag. Microscopic and microprobe studies indicate that the recoverable copper is in the form of matte, chalcocite, and metallic copper; the percentage of copper in particles appearing to be copperfree was from %
During 1995, a campaign was conducted on Mintek''s 200 kVA DCarc furnace to recover cobalt from copper reverberatory furnace slag (initially containing Co:% and Cu:%). Alloys containing Co: 67%, Cu: 911%, Fe: 7778%, and S: 23% were produced, leaving
The recovery of copper and cobalt from ancient copper slags from the K#252;re region of Turkey was investigated. A fayalitictype of ancient copper slag containing % Cu, % Co and % Fe
coppercontaining slag. Management options for this slag include recycling, recovery of metal values, production of value added products and disposal (Gorai and Jana, 2003). However, there are no universal methods to recover copper from copperbearing slags as the chemical and phase composition of a slag depend on factors such
With the existing process route in the pyrometallurgy of copper the recovery of valuable metals from the slag phase is not sufficient. The selective separation or enrichment of these metals into a metallic or matte phase would lead to an improved exploitation of the available potential. Beside economic reasons also ecological benefits would be given.
White Pine reverberatory furnace slags contained economically recoverable amounts of copper for a variety of reasons. Among them: White Pine concentrates yield extremely high matte grades (65+% Cu) and viscous slags. The viscous slags hinder matte settling causing matte prill entrapment in the slag. White Pines total refined copper
#0183;#32;In these images it is evident that there is very little copper mineral content in this particular slag, confirming the XRD results, which indicate that the reverberatory slag has no copper minerals. This suggests that the reverberatory furnace is efficient in its recovery of copper and other values to the matte phase as it apparently produces a much cleaner slag.
#0183;#32;The copper recovery ratio was % through ECS method from smelting slag. The metallic impurities were lower than 2 mg/L with low Znconsumption after ECS treatment. Abstract
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