Key Equipment for Lithium Spodumene Acidification Roasting: Mixed Acid Machine

  With the rapid development of new energy electric vehicles, the demand for lithium batteries is increasing day by day. As an important cathode material for lithium batteries, the production of lithium carbonate is of vital importance.

  The production of lithium carbonate generally involves extraction from lithium spodumene, lithium mica, waste slag, glass powder or battery recycling black powder. Currently, the mainstream production method is to extract from the raw ore lithium spodumene. The acidification rate of acidification roasting from the raw ore lithium spodumene directly affects the production cost of lithium carbonate. The factors influencing the acidification rate mainly include the accuracy of the concentration ratio of concentrated sulfuric acid, the accuracy of the ratio of β lithium spodumene powder, the uniformity of mixed acid, the control of acidification roasting temperature and time, etc. Among them, the key equipment, the mixed acid machine, has a significant impact on the uniformity of the mixed acid material, which directly affects the acidification rate of the subsequent acidification roasting process.

The main advantages of our company's acid-mixing machine design are as follows:

(1) The design of the acid-resistant and wear-resistant blades ensures that the service life of the blades can be extended from 2 months to approximately 8 months, with almost no increase in cost.

(2) The main shaft is designed with acid resistance, wear resistance and high strength. It uses special spraying materials and high-quality materials. Moreover, there is a special connection method between the shaft and the blades, which enhances the strength of the shaft and prevents shaft breakage or wear. It is suitable for the working conditions involving mixed acids.

(3) The stirring shell is made of acid-resistant and wear-resistant materials and is welded as a whole. The bottom shell is equipped with a wear-resistant design to ensure no acid leakage during the acid mixing process and the wear resistance of the shell.

(4) The design of the concentrated sulfuric acid distributor significantly improves the uniformity of the added concentrated sulfuric acid, ensuring a uniform supply of acid during the stirring process.

(5) In terms of the sealing performance design of the overall shaft and the housing, we have broken away from the original sealing structure. By designing stepped structures both inside and outside, as well as using packing, labyrinth seals, etc., we ensure that no powder leaks out.

(6) The overall structure design has been optimized to reduce the area occupied.

Our mixed acid machine has been operating stably in several projects for several years. The equipment has few wear parts, low operating costs, and high mixing uniformity. It has received unanimous praise from users. We welcome all friends from all walks of life to come for consultation and communication.

Our company mainly designs and builds a complete production line process for extracting lithium carbonate through pyrometallurgy, using raw materials such as lithium mica, lithium olivine, and phosphoaluminum lithium stone, as well as waste materials such as scrap, carbon blocks, glass powder, and black powder. The process mainly includes raw material feeding, batching, conversion, roasting, cooling, mixing of acids, acidification, roasting, cooling, acid mist treatment, smoke gas treatment, and the overall control system of the entire pyrometallurgical process. We provide the complete package and solutions for the entire pyrometallurgical process. We welcome both new and existing customers to come for consultation.