Breakthrough in development technology of Salt Lake solid potassium ore during four years

After nearly 4 years of efforts, the "Chaerhan Salt Lake Group (000578)," The dissolution and transformation of solid potassium ore in the study of the Experimental and engineering studies, the project has been harvested, Qinghai Chaerhan Salt Lake Potash Ore development technology breakthrough.　　According to Qinghai Provincial Science and Technology department, the Salt Lake Group undertook the "Chaerhan Salt Lake dissolved transformation test and Engineering research" project in late May through the expert evaluation, which for the realization of limited potassium resources and sustainable development of the technical support. As we all know, the Chaerhan Salt Lake is the largest soluble potassium magnesium salt mine in China, according to the existing exploration, the area storage of potash resources 5. 400 million tons, of which liquid ore 2. 4.4 billion tons, solid ore 2. 9.6 billion tons.　　However, in the face of such a rich potash resources, the relevant enterprises can only hope and sigh, because according to the existing mining technology, designed to extract only liquid potassium ore, solid potassium ore due to low grade, many layers, thin thickness and other characteristics can not be directly mined, therefore, there is no separate mining value. In order to realize the economical utilization and sustainable development of resources, Salt Lake Group in April 2006 decided to invest 5 million yuan, the solid potassium ore dissolved conversion as an important research topic for independent study, and by the Salt Lake area well-known academician Zheng Mianping academician and other scholars, "Chaerhan Salt Lake dissolved transformation Test and engineering study"　　Research. From the later input, the study of the above topic obviously exceeded the early stage of the forecast, the beginning of the 4 million yuan budget funds is far from enough.　　It is understood that in order to continue the study of the subject, Salt Lake Group in the national "Eleven-Five" supported by the Science and Technology Support program, has invested 200 million yuan to the Chaerhan Salt Lake solid potassium ore dissolved transformation mining and industrial production carried out a systematic test, and finally obtained a major breakthrough in the development of potassium ore. It is understood that the new results are compared with the solvent test, the magnesium-sodium solvent was selected as the main solvent for the dissolution of the solid potassium ore, and the soaking dissolution technology was developed, and the solid potassium dissolution rate reached more than 80%, and the solid potassium of the solution was more than 85% by the analysis of the solid salt samples before and after dissolution.　　It will have a positive influence on the sustainable development of potash industry in future. Industry insiders believe that the Qinghai Chaerhan Salt Lake Potassium ore development of new technologies to achieve a breakthrough for the Salt Lake Group of potash fertilizer Stable production provides a reliable resource protection.