Basic knowledge in mineral processing ore benefication
1. What is mineral processing? Ore mined from underground is generally composed of useful minerals and gangue. Its grade is generally relatively low and cannot be smelted directly. It needs to be processed first to remove most of the gangue and crop components, so that the useful minerals can be enriched into concentrate for utilization. The process of separating useful minerals from gangue minerals in ores and achieving relative enrichment of useful minerals with the help of various mineral processing equipment due to differences in physical or physical and chemical properties of minerals is called mineral processing. 2. What is the purpose and significance of mineral processing? Wolframite ore generally contains a large amount of gangue, such as quartz. After mineral processing, a large amount of gangue such as quartz is removed, so that the tungsten mineral component is enriched and becomes a concentrate product. Some ores also contain elements that are harmful to the smelting process, such as sulfur and phosphorus in iron concentrates. Their content should not be too high, otherwise the pig iron will become brittle. Especially for some multi-metal symbiotic ores, the metal components contained in them, such as Cu-Pb-Zn-Fe, often harm each other during smelting. The various concentrate products produced from the ore are smelted separately.
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In addition, the technical and economic effects of mineral processing on smelting are also very obvious. For example, increasing the copper concentrate grade from 15% to 16% can increase the smelting recovery rate by 0.1%~ 0.15%, the production capacity increases by 6% to 8%, and the fuel consumption decreases by 6% to 7%; and if the iron concentrate grade increases by 1%, the blast furnace pig iron output increases by 2.5%, and the coke ratio decreases by 1.5%. Therefore, the purpose of mineral processing is to remove a large amount of gangue and harmful elements contained in the ore, enrich useful minerals, or separate various symbiotic useful minerals from each other to obtain one or several useful concentrate products. Mineral processing is of great significance for developing the mining industry and making full use of mineral resources.
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