Talc is a commonly used chemical product, and some industries need to purify it when it is used。Now, let's see how we do that, okay。
1、浮选。Due to the natural floatability of talc good。Therefore, the hydrocarbon oil collector can be flotation。The commonly used collector is kerosene, flotation oil as a foaming agent。Talc flotation process is relatively simple, only one rough selection, one sweep selection, 2-4 times to obtain concentrate。
2, photoelectric inspection。Photoelectric separation is a method of separation of talc and impurity minerals based on the difference of surface optical properties。The photoelectric sorting machine includes preparation mechanism (mine bin, miner feeder, belt conveyor), radiation source and detector (sensor), electronic control loop and actuator。In addition, the feature of white fluorescence emitted by talc under ultraviolet irradiation is used。
3、手选。Hand selection is selected by hand according to the different smoothness of talc powder and gangue minerals。Talc has good smoothness, high grade, the better the smoothness is easy to identify by feel。
4、磁选。Talc concentrate requires a certain fineness in addition。It also has a certain whiteness。Because of the presence of dyed iron minerals in the ore sometimes the above methods are not enough, it is necessary to remove iron minerals by magnetic separation。
These are the main contents of how to purify talc powder。
