Characteristics Of Potassium Sulfate Deposit From Salt Lake Brine And Its Application Study On Chemical Process In Lop Nur

The paper focuses on the study of brine of Lop Nur Salt Lake in Xinjing. By studing the mineraliztion mechanism and the property of the salt lake brine deposits, property of the law of di stribut ion of intercystall ine brine and hydrogeological charateristies were understood. Analysis and research were made of the chemical compositions, the chemical process charateristics, test of brine evaporation and rational classification of the evaporated products were conducted to produce potassium mixed salts and carnallite. Meanwhile, the process of conversion-flotation and decomposition- washing was introduced to produce schoenite and semi-produce of potassium chloride, which were to be conversed to potassium sulfate by adding water, providing a new way for production of potassium sulfate by the development of Lop Nur Salt Lake brine resources. A 20kt/a potassium sulfate plant was subject to commercial tests, providing the therotical basis and design data for a 1.2mt/a potash Fertilizer project in Potash Fertilizer Base of Lop Nur, Xinjiang and has gone into commercialization. It is of the great importance and economic benefits to the national strategy for implementing the development of the west part of china and inceasing the self-supply rate of potash fertilizer by turning the resources advantage into the economic edge.