Mica plate crushed mica process

1. Lutang

Sorting is performed according to the physical and chemical properties of the surface of mica and gangue. The ore is crushed and ground to dissociate the mica monomer. Under the action of the agent, the mica becomes a foam product and separates from the gangue. Mica flotation can be carried out in acidic or alkaline pulp. The cations of long carbon chain acetate amines and the anions of fatty acids are the collectors of mica. In the mica flotation process, three stages of rough selection and three stages of selection are required to obtain mica concentrate. Therefore, mica ore floats are selected to recover mica and fine-grained mica below 14 mesh in pegmatite and mica schist. In my country, the flotation of mica ore has not yet been used in production.

2. Winnowing

Mica winnowing is mostly realized through special equipment. The process is generally: crushing → screening and classification → winnowing. After the ore is crushed, the mica is basically formed into flakes, while the gangue minerals such as feldspar and quartz are in massive particles. Accordingly, multi-level classification is used to pre-divide the selected materials into narrower particle sizes. According to the difference in the suspension speed in the airflow, special air separation equipment is used for sorting. The winnowing method is suitable for areas lacking water sources and has been used in actual production.