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Blister copper · buyers, suppliers and prices
Blister copper is impure copper, typically about 98% to 99.5% Cu, cast by a smelter before it is refined into cathode. Smelters in Zambia, the DRC and Namibia sell it, and copper refineries and traders in China, India and Europe buy it. On Copper Supply you can post a free requirement or offer and deal only with members who have passed an ID check.
No live blister copper listings right now. Post yours and members who trade blister copper are emailed within minutes.
Post it freeBlister is priced on its payable copper at the LME average over an agreed quotational period, minus a refining charge, plus payable gold and silver, minus penalties for impurities above the limits. The refining charge covers the cost of turning blister into cathode, and moves with supply and demand for refining capacity.
In African trade, blister is often sold more simply, as LME minus a discount in US$ per tonne or %, at a smelter gate or bonded warehouse. The discount reflects the copper content, impurities, location and payment terms.
Payment is usually provisional against shipping documents, then final after the assay exchange, or TT after inspection for trial lots. On Copper Supply you can price a blister listing as a % of LME on the Cu content, LME − US$/t, LME ± %, a fixed price, or open to offers.
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Blister copper is impure copper, typically about 98% to 99.5% Cu, produced by a smelter from copper matte. It gets its name from the blisters on its surface left by gas released as it cools. It is fire-refined into anodes and then electrorefined into cathode.
On the payable copper at the LME average over an agreed period, minus a refining charge, plus payable gold and silver, minus penalties for impurities. In African trade it is often sold more simply at a discount to the LME.
Copper refineries with anode furnaces and electrorefining, integrated smelters and the trading houses that supply them. China and India have the largest refining capacity.
From copper smelters, mainly in Zambia, the DRC and Namibia. A real offer names the smelter, and the tonnage should fit what that smelter produces.
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Post it free. Members who trade it get an email within minutes, and only ID-checked people can contact you.
Typical blister copper specification
Blister is the first metallic copper out of the converter, at about 98% to 99.5% Cu. Anode copper has been fire-refined further and cast into plates with lugs, ready to hang in an electrorefining cell.
Usually by drilling or sawing pieces from each lot under an agreed method, then assaying the samples at independent labs. The contract should name the method, the labs, the splitting limits and an umpire lab.
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