The introduction of Chemical copper concentrate

Chemical copper concentrate
Chemical copper concentrate decription :Copper is the metal one of the earliest human discovery and use of purple, specific gravity 8.89, melting point of 1083.4 ° C Copper and its alloys due to conductivity and thermal conductivity, corrosion resistance, easy processing, good tensile strength and fatigue strength, widely used in the metal material consumption after steel and aluminum, as the people’s livelihood and national defense projects and even indispensable in the high-tech fields of basic materials and strategic materials. A wide range of uses in the electrical industry, mechanical industry, chemical industry, defense industry and other sectors. The copper concentrate is low grade copper ore after the beneficiation process processing to achieve a certain quality indicators concentrate for the smelter copper.
Beneficiation process
Copper beneficiation process is broken – milling – classification – Flotation – Selected, containing nickel and cobalt molybdenum gold and rare metal ores, the rougher copper concentrate were flotation of nickel concentrate, cobalt concentrate, molybdenum concentrate, gold concentrate.
Exist in the form of harmful elements in the copper concentrate and chemical properties:
Lead: in the copper concentrate mainly in the form of sulfate and oxide sulfide, sulfate melting point (℃): 1000 ℃; decomposition, 1170 ℃. Oxide Boiling Point: 1535 ° C; melting point of 888 ℃. Sulfide melting point of 1114 ℃.
Arsenic: in the copper concentrate is generally divided into two types of compound state to Cu3AsS4 in enargite elected in copper concentrate. Compound state to Cu12As4S13 in tennantite elected in copper concentrate there. .
The fluorine content is extremely low: in the copper concentrate, CuF2 other metal fluoride form exists. CuF2 melting point: 950 ° C, decomposition temperature: 950 ° C, boiling point: 950 ℃. Very stable, non-volatile at room temperature.
Mercury: the main elected to the tennantite Heiyou copper in copper concentrate to Hg12As4S13 Hg12Sb4S13 compound state of existence. Crystal axis sulphosalts spp. Single crystal often has tetrahedral (tetrahedron), the English name of the resulting. Tetrahedrite and tennantite Cu12As4S13 into isomorphous series. Holmes hardness of 3 to 4, the proportion of 4.6 (tennantite copper) to 5.0 (tetrahedrite). Usually showed a dense block or granular.
Cadmium: zinc is found in sphalerite often, the content of the copper concentrate almost negligible nature in the form of CdS of CdS micro-toxic, non-radioactive, slightly soluble in water and ethanol, soluble in acid, very soluble in ammonia, melting point:> 999 ℃. CdS non-volatile under normal temperature and pressure.
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