Relationship between deposit type and ore selectivity
The relationship between the type of deposit and the selectivity of the ore is manifested in the ease of sorting of various mineral components in the ore during the beneficiation process, called ore selectivity. Some ore is easy to choose, and some are difficult to choose. From a geological point of view, the ore selectivity depends mainly on the occurrence characteristics of ore-forming elements, mineral composition, ore structure, mineral inlay size and dissociation degree. According to the difficulty of ore beneficiation, based on mineral exploration, mineral composition research and mineral processing experiment, according to the mineral processing industry indicators formulated by the state and industry, the ore (or deposit) industrial type can be divided into easy-to-select and easy-to-select, Difficult to choose three types. Its main indicators: (1) Easily selected ore type (the concentrate grade is greater than the minimum requirements set by the state, and the recovery rate is greater than 90%); (2) It is easier to select the type of ore (the concentrate grade is greater than the minimum requirements set by the state, and the recovery rate is 70% ~ 90%); (3) Types of refractory ore (concentrate grade is greater than the minimum requirements set by the state, and the recovery rate is 50% to 70%). In this way, the ore (or deposit) industrial classification scheme is divided according to the difficulty of mineral processing. The standard is clear, simple and easy to apply, and is suitable for mineral exploration and mining. Practice has shown that the mineral composition of the deposit is simple, and it is mostly a type of deposit that is easy to select and easier to select. Such as sedimentary metamorphic iron deposits, porphyry copper- molybdenum deposits, quartz vein type black-tungsten deposits, etc.; and those multi-source mineralization, diversification of mineralization, multi-stage mineralization era "deposit mostly refractory deposit types, such as Inner Mongolia Baiyunebo iron, rare earth, niobium, fluorine large deposits, Hunan Shizhuyuan tungsten, tin, bismuth, molybdenum-based super tungsten metal deposit and the like. Active Magnesium Oxide, MgO, relative molecular weight 40.30. Its chemical composition, physical morphology and other indicators are not much different from ordinary magnesium oxide, but some indicators of active magnesium oxide and ordinary magnesium oxide requirements are different; For suitable particle size distribution, average particle size :< Including 2 m (2000 nm); The micromorphology is irregular particles or nearly spherical particles or flake crystal. The activity measured by citric acid (CAA) ranged from 12 to 25s(the lower the CAA value, the higher the activity). The activity indicated by iodine absorption value ranged from 80 to 120(MGI2/100GmGo). The specific surface is between 5~20m3/g and apparent volume is between 6~8.5mL/g. Active Magnesium Oxide,Wire Magnesium Oxide,Flame Retardant Magnesium Oxide,Modified Rubber Magnesium Oxide FENGCHENG JINDE MAGNESIUM CO., LTD , https://www.brucitemagnesium.com