Reasonable Utilization of Primary Sylvinite-Production of Potassium Sulphate or Potassium Magnesium Sulphate Fertilizer

摘要：

In this paper two optional production processes are presented for reasonable utilization of primary sylvinite in Qinghai province, China. The two kinds of products as chlorine-free potash fertilizers; potassium sulphate or potassium magnesium sulphate can be obtained.In the course of potassium sulphate production, using primary sylvinite from Qinghai salt lake as raw material with impurities such as sodium chloride and insoluble in primary sylvinite, it must be prepared by flotation before being converted into potassium sulphate. This final product has found wide use in tobacco industry in China.However, in some cases Chinese farmers would rather buy the fertilizer of potassium magnesium sulphate than high quality of potassium sulphate. With flotation process which is a little different from above mentioned, the potassium magnesium sulphate fertilizer may be produced by washing one of the flotation concentrate presented as picromerite, while another concentrate containing potassium chloride is treated as by-product.

关键词： Primary sylvinite Flotation Conversion Picromerite Potassium sulphate Potassium magnesium sulphate fertilizer

作者: H. R. Zhang W. Y. Song S. L. Liu

作者单位: Mineral Processing Research Division, China Bluestar Lehigh Engineering Corp., Lianyungang, China

会议类型: 国际会议

会议名称: XXIV International Mineral Processing Congress(第24届国际矿物加工大会)

会议地点: 北京

会议语种:英文

页码: 1869-1873

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）