Abstract
A method of obtaining a composite ferrosilicon flocculant-coagulant (FSFC) as a result of acidic modification of slaking steelmaking slag was suggested. It has been determined that the acidic modification of electric-furnace steelmaking slag results in the leaching of basic oxides with the formation of ferric sulfate and silicic acid gel. This allows using the obtained modification product as a ferrosilicon flocculant-coagulant in emulsified wastewaters purification systems. It has been demonstrated that the obtained powdery FSFC at the consumption rate 0.7 g/dm3 provides the emulsion purification efficiency – 99.3 %.
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