Recovery of Bischofite from Salt Lake Brine by Ion Flotation

Document Type : Research Article


Department of Mining Engineering, Faculty of Engineering, University of Kashan, Kashan, I.R. IRAN


Bischofite is a hydrous magnesium chloride mineral with formula MgCl2.6H2O. Specific gravity of bischofite is 1.56 g/cm3 centimeter, and molecular weight of bischofite is 203.31.Magnesium chloride has too applications in industrial and agricultural. The aim of this study is recovery of Bischofite from Salt Lake brine.There are various methods for extraction of Bischofite such as solar evaporation methods and ion exchange, but in this study has been used a new method and innovative for extraction Bischofite. This method is ion flotation that was used sodium oleate as collector for recovery of magnesium chloride from Salt Lake brine. For this purpose, first, were identified the parameters affecting this process and were performed more tests related to the effects of these parameters. In this study, was produced Bischofite with purity 98% and recovery 78% from brine Salt Lake. Physico-chemical properties of the final product are determined using XRD, complexometry, ICP and gravimetry.


Main Subjects

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