Once the copper ore is transported from the open pit, it must be cleansed of waste materials, such as dirt, clay and numerous minerals that bear no copper. This is called concentrating, and it’s usually accomplished through a method which entails crushing and grinding the ore in order to separate it from the waste materials (rock and other particles). Here are the steps in the concentrating
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Copper mining and concentrates production is a complex process requiring a symphony of operations using specialized equipment and techniques such as explosives and earth moving equipment to extract and transport the raw ore to the processing plant for crushing and grinding operations before the ore undergoes a refining process to create concentrates such as leaching and electrowinning or froth
احصل على السعرالحصول على الاقتباسWhatsAppFrom Copper concentrates. Copper sulfide concentrates are smelted, resulting in blister copper, which contains approximately 97-99% of the silver that was in the original concentrate. The blister copper is then electrolytically refined and ‘slimes’ accumulate on the anode or at the bottom of the refining tank.
احصل على السعرالحصول على الاقتباسWhatsAppThe 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.
احصل على السعرالحصول على الاقتباسWhatsAppCopper Electrolytic Refining Process In the electrolytic refining of copper, a thin sheet of high-purity Cu serves as the cathode. The blister copper plates are taken and used as anodes in an electrolyte bath of copper sulfate, CuSO4, and sulfuric acid H2SO4. As current is passed through the solution, pure copper from the anodes is plated out
احصل على السعرالحصول على الاقتباسWhatsAppCopper processing is a complicated process that begins with mining of the ore (less than 1% copper) and ends with sheets of 99.99% pure copper called cathodes, which will ultimately be made into products for everyday use.The most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and pyrometallurgy, respectively, due to the different
احصل على السعرالحصول على الاقتباسWhatsAppThe 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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احصل على السعرالحصول على الاقتباسWhatsAppSelenium is present in the anode slimes of electrolytic copper refining, which are those constituents in the copper anodes that are not solubilized during the electrolytic refining process and accumulate at the bottom of the electro-refining tank [59]. These slimes contain ∼10% selenium and ∼5% tellurium. The slimes contain 25–70% of the selenium content of the copper ore; the rest
احصل على السعرالحصول على الاقتباسWhatsAppmining and milling, to smelting and refining or solvent extraction and electrowinning. The chap-ter begins with an overview of the history of cop-per technology development. Then, for each stage i n copper production, it reviews the cur-rent state-of-the-art, identifies recent technologi-cal advances, reviews probable future advances and research and development needs, and dis-cusses the
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Electrical equipment—providing circuitry, wiring and contacts for appliances and consumer electronics accounts for 12.5 percent of copper usage. The remaining 12.5 percent is used for by the transport sector. The high purity copper wire harness system in a train, car or truck carries the current from the battery throughout the vehicle to equipment such as lights, central locking, on-board
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Copper refining: Getting to market Mining companies may sell copper in concentrate or cathode form. As mentioned above, copper concentrate is most often refined using equipment at a different
احصل على السعرالحصول على الاقتباسWhatsAppCopper extraction refers to the methods used to obtain copper from its ores.The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors.. As in all mining operations, the ore must usually be beneficiated (concentrated).
احصل على السعرالحصول على الاقتباسWhatsAppIn primary metal refining the copper is removed by liquation: as the temperature is lowered the solubility of copper in liquid lead is exceeded and on top of the molten bath a removable copper rich dross is formed. This is partially done at the furnace before the bullion enters the refinery. The Cu-rich particles float to the surface where they assemble in a lead-rich copper dross. If nickel
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احصل على السعرالحصول على الاقتباسWhatsAppCopper extraction refers to the methods used to obtain copper from its ores.The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors.. As in all mining operations, the ore must usually be beneficiated (concentrated).
احصل على السعرالحصول على الاقتباسWhatsAppThis is followed by extraction (removing the valuable minerals from the ore) and finally refining. Each of these processes are discussed in this chapter. The idea is not that learners should know all the terms off by heart, but rather that they grasp the bigger picture. A number of different processes are needed with each one dependent on the efficiency of the step before. The flow diagram
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احصل على السعرالحصول على الاقتباسWhatsAppIn 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 further refining by electrolytic processes or is cast into
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