为合理利用重庆城口锰矿,进行了该矿的工艺矿物学研究。研究表明,锰主要赋存于菱锰矿和含锰白云石中,脉石矿物中锰质量分数低。由于矿物多为浅海沉积形成,矿物结晶较差,呈细粒晶或非晶质状态,因此矿石在碎磨过程中易形成泥级,引起选矿分选困难。此外,交代作用导致富锰的碳酸盐矿物与脉石矿物等形成复杂连生,易引起矿物解离度降低;大量的炭质存在,对选矿分选也会造成一定的困难。 In order to make rational use of Chengkou manganese ore in Chongqing, the process mineralogy of the mine was studied. Studies have shown that manganese mainly occurs in rhodochrosite and manganese-containing dolomite, manganese ore gangue low mass fraction. As the mineral is mostly formed by the shallow sea sediments, the mineral crystallizes poorly in the form of fine grain or amorphous state, so the ore is easy to form the mud grade in the crushing process, which causes the difficulties in the beneficiation and sorting. In addition, the metasomatism results in the formation of complicated intergrowths between manganese-rich carbonate minerals and gangue minerals, which can easily lead to the decrease of mineral dissociation degree. The presence of a large amount of carbonaceous material will also cause some difficulties in beneficiation and sorting.