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Infobox on Kainite
Example of Kainite
Origin See text
Stowage factor (in m3/t) 3,6 m3/t (bulk)
Humidity / moisture -
Ventilation -
Risk factors See text


Descrption / Application

Kainite is a mineral salt that consists of potassium chloride and magnesium sulfate and is used as a fertilizer.

This mineral is dull and soft, is coloured white through yellow to red and is found in the Stassfurt salt mines in Saxony, Germany. It is a natural salt occurring in irregular granular masses, and is used as a source of potassium and magnesium compounds.

Shipment / Storage / Risk factors

Kainite is hygroscopic and liable to loss in weight but a very stable and hard mineral in its pure rock form. In this state it is shipped without risk of damage. After calcination it is changed into ‘mullite’ which can be ground, screened and sized for shipment in sacks. When shipped in this form is subject to damage, contamination by water causing it to lose in strength but gain in weight. Wetting may also result in the formation of a solid mass giving rise to difficulties in discharge.