Tin ore separation process
The density of tin ore is bigger than paragenetic mineral , so we use gravity concentration to processing tin ore . Because there are many oxide iron ore inside , for example : magnetite , hematite , if use gravity concentration or flotation , that could not separate them from tin , so magnetic will be added .
All kinds of tin minerals , teallite，franckeite， cylindrite ， canfieldite ，Black boron tin ， Malaya Garnet ， varlamoffite ， schoenfliesite and so on .
Crushing and Screening
Crush the raw ore to 20mm, then screen it to two grade, (20mm~4mm) and (4mm~0mm).
Put the 20~4mm ore into heavy medium cyclone to be selected. Then the ore will enter into the rod mill. After that, it will be preselected in jig. The tailings over 2mm will be abandoned, the 2mm ore will be put into shaking table.
The concentration from jig and shaking board will be separately selected by bulk flotation. The tailings will enter the shaking board to get qualified tin concentrates.
After the bulk flotation, the concentrate will be fine grinded, then will be do the flotation separation of lead zinc ore. After that Lead antimony concentrates and zinc concentrates will be produced.
The pulp enter into Φ300mm hydrocyclone, then overflow to Φ125mm and Φ75mm hydrocyclone group to remove the fine mud. The sand setting will enter into the process of thickening, desulphurization by flotation, and then cassiterite flotation .
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