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研究了两个工业过程中延长磨矿时间对矿物的影响。这两个过程是:(1)金属硫化矿精矿的处理过程;(2)将钛铁矿用碳高温还原成人造金红石的过程。选厂的精矿是品位为128g/t的金精矿和含铜的锌精矿。经过细磨之后金精矿中含金的矿物完全溶解;锌精矿中所有的硫化矿物几乎都溶解,只剩下脉石和元素硫。对纯的黄铁矿和砷黄铁矿的研究表明,在磨矿之后直接进行简单的浸出就可发生矿物的选择性溶解。将钛铁矿和煤一起细磨后除了会使钛铁矿的还原反应速度和选择性改善之外,还可使钛铁矿碳热还原的温度下降150℃。
The effect of prolonging the grinding time on the minerals in two industrial processes was studied. The two processes are: (1) the treatment of metal sulfide ore concentrate; and (2) the process of reducing ilmenite to artificial manure with high temperature. Concentrate processing plant is grade of 128g / t of gold concentrate and copper concentrate of zinc. After fine grinding, the gold-bearing minerals in the gold concentrate are completely dissolved; almost all of the sulfide minerals in the zinc concentrate are dissolved, leaving only gangue and elemental sulfur. Studies of pure pyrite and arsenopyrite show that the selective dissolution of minerals can take place directly by simple leaching after grinding. After ilmenite and coal are finely ground, in addition to improving the reduction reaction speed and selectivity of ilmenite, the temperature for carbothermic reduction of ilmenite can also be decreased by 150 ° C.