LR6 battery

Introduction to LR6 battery recycling technology and process characteristics

Lithium-ion battery recycling technology is mainly divided into waste iron phosphate lithium-ion battery recycling technology and waste ternary battery recycling technology. Waste iron phosphate lithium-ion battery recycling technology uses waste iron phosphate lithium-ion batteries as raw materials to prepare lithium chloride solution through discharge, disassembly and crushing, acid leaching, impurity removal and other processes, and then enters the company's lithium chloride production system to prepare anhydrous lithium chloride, battery-grade lithium carbonate, lithium hydroxide and other products; waste ternary battery recycling technology uses waste ternary lithium-ion batteries as raw materials, and obtains nickel-cobalt-manganese purified liquid through discharge, initial crushing, powder selection, acid leaching, impurity removal, lithium precipitation and other processes; nickel-cobalt-manganese purified liquid is prepared through co-precipitation, filter press separation, drying and other process steps to prepare ternary precursors. The production process efficiently separates the extractant and by-products, reduces material consumption, improves the recovery rate of resources, and reduces the cost of three waste treatment.

The important products of lithium-ion battery recycling projects include battery-grade lithium carbonate, lithium hydroxide, and ternary precursor materials. These three important products are all key new products of Jiangxi Province. After appraisal by relevant experts organized by the Provincial Department of Science and Technology, their technological level has reached the leading level in China. The core technology of the project has been authorized with two national invention patents:

(1) A method for removing cobalt and manganese from nickel sulfate solution using nickel hydroxide, cobalt and manganese as raw materials (ZL201310552644.7);

(2) A method for preparing a precursor of a ternary positive electrode material (ZL201310485720.7).

The production equipment selected for the lithium-ion battery recycling project has a high degree of automation, and the materials, rigidity, strength, operation control system, and safety protection devices must meet the regulatory requirements. The equipment is technologically advanced, with reliable production performance and durability. According to the operating conditions, process medium characteristics and product requirements, various equipment are in principle standardized products, and non-standard equipment is designed separately according to relevant national standards. The advanced features of the project are as follows:

(1) The project uses domestic advanced equipment. The production process and equipment selection fully consider the coordination between the various operation steps, and make reasonable combinations according to the amount of reaction materials, reducing the leakage, bubbling, dripping and leaking in each production link;

(2) All important equipment are equipped with frequency conversion equipment, which can save 10~15% of electricity and reduce mechanical equipment failures, saving energy consumption while ensuring continuous production;

(3) The important reaction vessels of this project are made of anti-corrosion materials to reduce the corrosion of the reaction materials to the equipment and ensure the safety of the reaction;

(4) Automated operation is realized. On the one hand, the stability of the device is improved due to automated control, and the overall average yield is improved; on the other hand, the extensive use of automatic interlocking protection, online analysis, safety control instruments, etc., greatly improves the safety of the device.

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