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The paper reviews the techniques of fire refining and electrolytic refining of blister copper. TABLE I Average compositions of blister: Copper and impurities in blister Percentage Primary copper Secondary copper Cu 98.6 -99.3 97-5-98-2 Fe 0,01 - 0,04 up to 0.05 Ni 0005- 0-6 0'3 -- 1.0 S 005 - O' l Zn 01)1 - 0,05 up to 0.5 As 0'01 - 01 Sb 001 0
The example results of continuous copper refining in laboratory scale at blister copper flowrate 5 kg/h in the form of oxygen content in oxidized copper and refined copper is shown in Figure 7. The obtained slag contained approximately 50% Cu, typical for refin-ing process. Oxygen content in reduced copper is about 1500 ppm, satisfying the condi
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The fire refining is operated in either reverberatory or rotary furnaces known as anode furnaces. Through this step, oxygen and other impurities in the blister copper can be removed before the copper is cast into anode for electrolytic refining. The processed blister copper, also known as copper anode is cast into anode shapes
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Blister copper is refined by stirring molten impure metal with green logs of wood because such a wood liberates hydrocarbon gases (Like C H 4 ). This process X is called polling . and the metal contains impurities of Y is C u 2 O
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(FeS), and some heavy metals. Converting the matte yields a high-grade blister copper, with 98.5 to 99.5 percent copper. Typically, blister copper is then fire-refined in an anode furnace, cast into anodes , and sent to an electrolytic refinery for further impurity elimination
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The matte is treated in a converter to eliminate most of the iron and sulphur and produce blister copper. The blister copper is refined in a reverberatory furnace to produce fire-refined copper (anodes) and, where required, may be further refined by electrolysis. Marketable products received from this
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resulting in blister copper of 98.5 – 99.5 percent copper content. In the next step, the blister copper is fire refined by the traditional process route or re-melted and cast into anodes for electro-refining. The output of electro-refining is refined copper cathode, containing over 99.99 percent copper
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Dec 03, 2020 The blister copper is recovered and is then subjected to another process called fire refining. In fire refining, air and natural gas are blown through the
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Fire Refining - Oxygen and other impurities in blister copper must be removed before the copper can be cast into anodes for electrolytic refining. Blister copper is fire refined in reverberatory or rotary furnaces known as anode furnaces. When co-located with a smelter or converter, the furnace may receive the blister copper
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Blister copper is further refined as either fire-refined copper or anode copper (99.5% pure copper), which is used in subsequent electrolytic refining. In fire-refining, molten blister copper is placed in a fire-refining furnace, a flux may be added and air is blown through the molten mixture to
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Blister copper is refined by electrolysis. Blocks of blister copper are used as anodes and thin sheets of pure copper act as cathodes. The cathode plates are coated with graphite in order to remove depositing copper. The electrolyte is copper sulphate (CuSO4) mixed with a little amount of H2SO4 to increase the electrical conductivity
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The refined blister copper is poured into casting molds lined up side by side on the revolving circular table of a casting wheel and cast into anode plates for electrolytic refining. The anode plates are approximately 1m x 1m x 0.05m in size, and weigh 380 kg per plate
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refining. In fire refining, molten blister copper is placed in a fire-refining furnace, a flux may be added, and air is blown through the molten mix-ture to remove residual sulfur. Air blowing re-sults in residual oxygen, which is removed by the addition of natural gas, propane, ammonia, or wood. The fire-refined copper is cast into an-odes for
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