木圭松软锰矿属我国大型的氧化锰矿床,其锰矿物主要为偏锰酸矿,并有少量硬锰矿、软锰矿及褐锰矿。脉石矿物主要为石英-遂石及粘土矿物。由于矿石疏松质软极易于泥化,直接采用通常的选矿方法不能得到令人满意的结果,但矿石先经选择性碎解后再进行选别,则选别指标会有明显提高。本文研究了矿石的结构和构造特性,查明矿石选择性碎解的作用及其原因,从而为制定工艺流程提供了科学理论依据。 Muguisong pyrolusite is a large-scale manganese oxide deposit in our country. Its manganese minerals are mainly metamnomanganese ore, and a small amount of hard manganese ore, pyrolusite and brown manganese ore. Gangue minerals are mainly quartz - stone and clay minerals. Due to the loose and soft soft ore easily muddy, the direct use of the usual beneficiation method can not be satisfactory results, but after the ore first selective decomposition and then sorting, the sorting index will be significantly improved. In this paper, the structure and structural characteristics of ores are studied, the role and reasons of ore selective crushing are investigated, which provides a scientific basis for the development of the technological process.