A Process of Producing Magnesium Sulphate by Treating with Waste Water from Titanium White Plant
This paper presents a new process for producing industrial magnesium sulphate using waste water from titanium white plant and magnesium oxide from calcinations of magnesite ore as raw materials. With the laboratory experimental equipment, the waste liquid and magnesium dioxide react effectively at ambient temperature and under atmosphere pressure. Via the press filter, a clear liquid predominately containing magnesium sulphate is obtained. It is further evaporated and crystallized by cooling, separated by centrifuge and dried. Consequently a high quality of industrial magnesium sulphate is achieved as the final product.In the course of process, as the majority of valuable component (SO42-) is recovered in the final product, most of impurities from waste acid is being removed into the by- product. With the simple operational process, it is possible for titanium dioxide plant to resolve the environmental problem completely and benefit from the industrial magnesium sulphate product as well.The filter cakes containing valuable elements such as Mg, S, Fe, Mn, V, Ti are by-products proposed to be used for manufacture of agriculture fertilizer particularly for peanut planting.
Titanium white plant Waste water Magnesite ore Magnesium sulphate.
Q. W. Jiang S.J. Ma
China Bluestar Lehigh Engineering Corp., Lianyungaag, China
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
663-666
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）