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Potassium feldspar is mainly composed of orthoclase, microcline and striped feldspar, i.e. aluminosilicate minerals of alkali metals such as potassium, sodium and calcium or alkaline earth metals.
1.Crushing
Crushthe ores into small rocks.
2.Grinding
Grind the crushed ores via grinding mill to be 0.074~0.5mm.
3.Mud Washing
Separate the fine ores of 0.074~0.5mm by spiral chute.
4.Sorting
After spiral chute, separate the ores by shaking table to remove the iron oxide.
5.Fine Separation
After shaking table separation, send the concentrate to the high-intensity magnetic separator to remove iron and mica, and then feed the concentrate into next magnetic separator for further sorting.
6.Purification
Use high frequency vibrating screen to further separate ore powder, remove iron trioxide and iron tetroxide from the powder, and obtain fine potassium feldspar powder.
7.Pickling powder
Using sulfuric acid as pickling agent, according to the concentration of acid and the iron content of potassium feldspar powder, the iron content of potassium feldspar powder is proportional to the sulfuric acid content. After pickling, the ferrous oxide and ferric tetroxide are removed completely, and the ferrous sulfate solution is separated to obtain potassium feldspar powder.
8.Screening of potassium feldspar concentrate powder
The feldspar concentrate powder is fed into 20-200 meshes for screening, and the product with iron content less than 0.24%.
