1. Electrolytic purification of copper: Crude Copper (copper 99%) is pre-made into thick plate as anode, pure copper made into thin sheet as cathode, with sulfuric acid (H2SO4) and copper sulfate (CUSO4) mixture liquid as electrolyte. After electrification, copper is dissolved from the anode into a copper ion (Cu) and moved to the cathode, arriving at the cathode to obtain electrons and precipitate pure copper (also known as cathode copper) in the cathode. Impurities in coarse copper, such as iron and zinc, which are more vivid than copper, dissolve together with copper as ions (Zn and Fe). Since these ions are not easy to precipitate compared to copper ions, it is only appropriate to adjust the potential difference when electrolysis can prevent these ions from precipitating on the anode. Impurities such as gold and silver, which are not vivid than copper, accumulate at the bottom of the electrolytic cell.
How to distinguish crude copper from cathode copper
The copper that is consumed in this way is called "Cathode Copper, the quality is extremely high, can be used to manufacture electrical products.
Precipitation in the bottom of the electrolytic cell called "anode mud", which is rich in gold and silver, is very valuable, remove and reprocessing has a very high economic value. The cathode copper is further processed and can be manufactured into a very fine cathode copper powder.
Cathode CopperThe powder is a pale red dendritic powder, which is easy to oxidize in moist space and can be dissolved in hot sulfuric acid or nitric acid.
Cathode CopperPowder use: Commonly used in diamond tools, electric carbon products, friction data, conductive inks and other powder metallurgy products.
2. Crude copper is the formation of copper, containing about 98.5% copper, after the smelting of the copper converter. Its surface roughness contains pores, hence the name, also known as "copper foam." This crude copper is refined once, cast into an anode copper plate, consumes cathode copper in the electrolytic cell, and the gold and silver contained in the coarse copper precipitate under the anode, called "anode mud", which is used to refine gold and silver. These gold and silver are symbiotic with copper, and ordinary copper mines contain gold and silver. Brass, copper which is good heat dissipation in copper and alloy, pure copper heat dissipation is the best. Generally speaking, the more pure copper alloy heat dissipation the better. Bronze alloy copper, bronze, brass, copper purity is the highest, its heat dissipation effect is the best. In practice, are made of copper material, the focus also depends on its shape, appearance, cooling fan performance and so on. Material is not the most important thing.
Metallic minerals can be divided into the following 4 categories according to their material composition, nature and usefulness:
(1) Ferrous metal minerals, the main mineral species are iron, manganese, chromium, titanium, vanadium;
(2) Non-ferrous metal minerals, the main mineral species are copper, lead, zinc, aluminum, magnesium, nickel, cobalt, tungsten, tin, molybdenum, antimony, bismuth, mercury;
(3) Precious metal minerals, the main mineral species are gold, silver, platinum Group metals (Platinum, osmium, Iridium, ruthenium, rhodium, palladium);
(4) Rare rare earth dispersed elements of minerals, it is divided into two subcategories, namely rare rare earth metals (the main mineral species are lithium, beryllium, niobium, tantalum, zirconium, rubidium, cesium, hafnium, strontium, rare earth metals) and dispersed elements (the main mineral species are germanium, gallium, indium, thallium, rhenium, cadmium, selenium, tellurium
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