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beneficiation is a proprietary knowledge, is a separation, enrichment and comprehensive utilization of mineral resources of science and technology. Concepts and terms involved are: definition of mineral, ore dressing, and directly related to several mineral properties, the following points are directly related, nature and concentration are the main mineral proportion (or density), conductivity, magnetism, wettability. Separation of 8 nouns, a mineral beneficiation is: analysis of differences in the use of mineral physics or physical and chemical properties, with all kinds of mineral processing equipment will be useful ore minerals and gangue mineral separation, and science and technology to make useful mineral enrichment process. We must first understand some ore dressing to introduce land. Two, mineral mineral in the earth’s crust is due to the nature of physical chemical or biological effects generated by natural elements (such as gold, graphite, sulfur) and natural compounds (such as magnetite, chalcopyrite, quartz), its composition is relatively uniform. In nature, except for a small number of minerals liquid (mercury), mostly solids. Solid minerals have certain crystal structure and physical and chemical properties. Magnetite, for example, is black and crystalline in eight faces, with a specific gravity of 4.6-5.2. Strong magnetism, chemical composition is Fe3O4, etc.. It provides the basis for the selection and utilization of these minerals. Three. Specific weight: the weight ratio of a body of mineral when it is 4 degrees. Four. Conductivity: refers to the electrical conductivity of minerals. There are generally good conductors, semiconductors and non conductors. It is the basis for electrical selection. Five. Magnetism: the quality of being attracted or repelled by a magnet. General minerals can be divided into strong magnetic iron ore (magnetite, etc.), weak magnetic iron ore (hematite, etc.) and non – iron ore (diamond, red copper ore, etc.). The magnetism of minerals is the basis of magnetic separation. Magnetic separator is mainly based on magnetic equipment for mineral processing. Six wettability: the nature of minerals being wetted by water. Minerals which are easily wetted by water are called hydrophilic minerals (quartz and calcite); conversely, the natural wettability of hydrophobic minerals (molybdenite, graphite) depends mainly on the crystalline structure of minerals. Minerals with different wettability have different floatability. Therefore, it is the basis of flotation. Seven minerals: minerals are unevenly distributed in the earth’s crust, but under the action of geology, a relatively rich mineral aggregate can be formed. Under the modern economic and technological conditions, the mineral aggregate which can be mined, processed and utilized is called ore. Otherwise it is called rock. Ore is composed of useful minerals and gangue minerals. The mineral that can be used for the national economy, that is, the mineral to be selected, is called a useful mineral. At present, the minerals which are not yet available by the state are called gangue minerals. Eight. Ore deposit: the ore accumulation area in the earth’s crust, which is called ore deposit. The concept and division of ore and rock should be comprehensively considered in terms of technology and economics. With the development of national economy and technology, more rocks can be upgraded to ores. Some knowledge about the previous analytical ore in China more than 20% iron ore, 20% of the rock, but also can choose now with high grade concentrate effect processing technology development of less than 20% of the iron ore in mineral processing technology advanced under the low content of rock is divided into ore. The same is true of gangue. Pyrite in general iron ore is discarded as useless associated ore. But when pyrite content is high, it can be recovered by ore dressing and used for sulfur recovery. The ore properties including chemical composition, mineral composition, structure (such as particles and aggregates size, shape, distribution and inter particle crystal etc.), the occurrence state of metal elements in the ore, ore and other physical and chemical properties. They are closely related to mineral processing. For example, according to the chemical composition and mineral composition, which can determine the recovery of useful components (minerals and elements), which took the removal of harmful impurities (minerals and elements); accord

Post time: 08-08-2017