blister copper


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blister copper

[′blis·tər ‚käp·ər]
(metallurgy)
Copper having 96-99% purity and a blistered appearance and formed by forcing air through molten copper matte.
References in periodicals archive ?
While boosting the production volume of blister copper and sulfuric acid of CCS as well as the leaching operations, the Group will expedite the validation and verification of the cobalt recovery program, with a view to further increase the existing production capacity and returns.
The blister copper is processed further in the anode furnaces to turn out refined copper ready to be mold into copper strips by the machine of Hazelett Twin Belt Caster.
Blister copper (copper in the range of 99% purity) was produced by blasting air through the molten copper to remove impurities and drive off most of the sulfur as sulfur dioxide.
Currently, in the copper circuit, copper concentrate (28-30% Cu and 0.8-1.0% Ni) is flash smelted with oxygen in an Inco flash furnace to a matte of about 45% CuNi, then oxidized to blister copper in conventional Peirce-Smith converters.
According to Schneider, there is little value adding in terms of the raw copper product and this is due to a number of different reasons, including the fact that the refining of locally produced blister copper was never feasible, the required skills are not available and the cost to relocating such expertise would be economically unviable.
Critics say that extension of Saindak deal with China for another five years would mean to end 19-year life span of the Saindak mine, as MCC has been involved in excessive mining and higher production of blister copper at the project site.
Blister copper is exported via Cape Town, 15,000 t/y of captive metal and the same amount of toll copper.
It has been through ups and downs and just when it had reached final stages of completion, after successful trial production in January 1996 during which about 1540 tonnes of Blister Copper was produced, the production operation is suspended for almost four years since then for want of working capital of Rs.1.5 billion for chemicals and spares and to keep it going.
Now more than 15 long years, the Chinese are exploiting the copper and gold mines with full speed and taking the blister copper to China.
The third Inquiry was authorized against Management of Sandak Metal Limited regarding excavation of Gold by Metallurgical Contracting Company China (MCC) under the cover of Blister Copper. In this case, the Management of Sandik Metal Limited (SML) regarding Excavation of Gold by MRLD under the Cover of Blister Copper were alleged for Metallurgical Contracting Company China through it sublet company MRLD is involved in illegal excavation of 1% Gold under the cover of blister copper without paying levy and other dues to Government of Pakistan thus causing loss of billion of rupees to the national exchequer.
blister copper production by 11.9% to 7,263 tons, copper concentrate production by 19.1% to 120,871 tons, aluminum foil production by
Except for Saindak with an output of 16000 tons of blister copper, there is no sign of large-scale mining, benefiting from foreign capital and technology.