At present, with the rapid development of the lithium battery industry, the output of metallurgical solid waste-lithium slag is also increasing, and the resulting environmental pollution problems are also emerging. Therefore, the demand for comprehensive utilization of lithium slag It is also becoming more and more urgent. At this stage, most of the research and application of comprehensive utilization of lithium slag remain in the field of building materials, and the added value of products is low. Recently, with the deepening of research, there have been application examples of high-value utilization of lithium slag. Guilin Hongcheng, as a lithium slag vertical grinding mill manufacturer in Guangxi, will introduce to you today the importance of lithium slag grinding for the high value utilization of lithium slag.
Lithium slag is the waste residue produced after lithium ore is extracted by sulfuric acid process. The main chemical components of lithium slag produced by sulfuric acid process are sio2, al2o3, cao and so3. Amorphous silicon and aluminum make lithium slag a highly active pozzolanic material. The content of sio2 in the lithium slag is 21-25%, and the content of al2o3 is 60-67%, which is basically consistent with the composition requirements of the silica-alumina micropowder used in the glass industry. At present, there are application examples of producing silica-alumina micropowder through flotation-strong magnetic separation-dehydration process, and its products are used to replace natural pyrophyllite for the production of glass fiber. The by-products produced at the same time - flotation tailings and magnetic separation tailings can be used as cement admixtures, realizing the high-value utilization of lithium slag. Slurry and stir the lithium slag so that the sulfate minerals in the lithium slag are in a dispersed and suspended state, and then the resulting product is subjected to reaction treatment with soluble carbonate and wet magnetic separation treatment in any order, and finally the slurry is concentrated and filtered and drying to obtain the pyrophyllite raw material for glass fiber. However, the existing technology of using lithium slag to produce silica-alumina powder has a relatively coarse particle size without grinding treatment, so the replacement rate of using it to replace natural pyrophyllite to produce glass fiber is not high. Therefore, lithium slag grinding is necessary for the high value utilization of lithium slag. Lithium slag grinding reduces the particle size of silicon-aluminum powder, improves the substitution rate of pyrophyllite in the subsequent glass fiber production, and at the same time fully dissociates the iron-containing components in lithium slag, better iron removal effect, and improves silicon Yield and quality of aluminum micropowder.
Guangxi lithium slag vertical grinding mill is an ideal equipment for lithium slag grinding. As a manufacturer of lithium slag vertical grinding mill in Guangxi, the HLM series Guangxi lithium slag vertical grinding mill produced by Guilin Hongcheng plays an important role in the high-value utilization of lithium slag, providing good equipment for lithium slag grinding 400-700 m²/g help. If you need to purchase Guangxi lithium slag vertical grinding mill equipment for lithium slag grinding or lithium slag high-value utilization projects, please leave us a message to learn more about the lithium slag grinding process.