The global sponge copper market is expected to
display splendid growth in forthcoming period. Sponge copper is the by-product
of sulfide ores that have been processed for ages in Zaire and Zambia by
roast-leach-electrowin process (RLE) process. The sulfides are then
concentrated and roasted to produce an oxidized iron – copper sinter. This
sinter is also sent to the leaching vats where copper is leached and recovered
directly from the leach solution, a low-grade copper cathode is produced which
must be refined electrolytically. The byproduct is recovered by an RLE process.
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Sulfuric acid is usually added to
the leaching fluid and form the leaching tanks, copper sulphate is passed to
the iron launders. The launders contain troughs consisting of sponge iron or
iron scrap. The iron reacts with copper sulfate solution to precipitate a black
sand called cement copper that is 90% copper. The sulfur is burned off
dissipating heat for the operation and iron converts to iron oxide to form a
slag lighter than copper.
Copper is a key metal for
industrial applications owing to high electrical conductivity, corrosion
resistance, ductility, malleability and rigidity. A local demand for sulphuric
acid is manufactured by the sulfur dioxide process in the reverberatory furnace
and the converter using considerable water. The specific applications of copper
in industries includes power cables and wires, jelly filled cables, building
wires, air-conditioning and refrigeration tubing. The use of copper also
pertains to telecom, power, construction, transportation, handicrafts,
engineering, consumer durable, defense and its use is highly dependent on the
performance of these sectors.
Hence growth of copper industry
is also linked to country’s economic and industrial growth. The segmentation of
sponge copper market by product includes copper and copper alloy. The segmentation
of sponge copper market by application includes automotive, aircraft and
others. By geographical regions, segmentation includes North America, Europe,
Asia Pacific, MEA and Latin America. The
key players in the sponge copper market include BASF SE, Evonik, SABIC
Innovative Plastic, Rogers Corporation, Armacell International SA, Zotefoams
Plc, UFP Technologies and ERG Aerospace.
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