The occurrence state of iron in kaolin determines the PTMS magnetic separation method for iron removal
Magnetic separation machine
The occurrence state of iron in kaolin is the main factor that determines the PTMS magnetic separation method of iron removal. At present, the occurrence state of iron in kaolin is divided into two kinds: one is present in kaolin and secondary minerals (such as mica, titanium dioxide and illite), which is called structural iron; The other is in the form of independent iron minerals, called free iron (including surface iron, fine grained crystalline iron and amorphous iron).
PTMS magnetic separator
The two-liquid flotation PTMS magnetic separation method uses fatty acids (or other hydrophobic collectors that can capture impurity iron minerals) to be added to kaolin slurry for stirring, static and stratification to form organic liquid (containing Fe2O3) and kaolin suspended double liquid, which is then separated by gravity separation equipment.
what is magnetic separation in Feldspar?
Stirring intensity is an important factor affecting the separation effect of this method. If the stirring intensity is insufficient, the dispersion of organic phase is not uniform, and the probability of collision contact between iron minerals and them is reduced. If the stirring intensity is too large, it is easy to form an intermediate phase of milky turbidity liquid, so it is necessary to choose the appropriate stirring intensity; In addition, the process will produce a large amount of organic waste liquid. The above factors result in the limitation of the application of PTMS magnetic separation method in the removal of iron and whitening of kaolin.
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