Product Introduction
The lithium carbonate rotary kiln is a high-efficiency equipment specially used for calcining lithium ore or spodumene to prepare lithium carbonate. It is mainly composed of a cylinder, a transmission system, a combustion system, a cooling device, and an exhaust gas treatment system.
Lithium carbonate is an important chemical raw material, widely used in many fields such as batteries, glass, ceramics and pharmaceuticals, especially in the lithium battery industry. The lithium carbonate rotary kiln extracts lithium elements from lithium ore through a high-temperature calcination process to produce high-purity lithium carbonate.
Table of Contents
Working Principle
The main function of the lithium carbonate rotary kiln is to extract lithium from spodumene or other lithium minerals by calcining them and converting them into lithium carbonate. The specific work flow is as follows:
- Feeding: Lithium ore is evenly fed into the rotary kiln through the feeding device. The particle size of lithium ore generally needs to be crushed and screened to ensure the uniformity and efficiency of calcination.
- Preheating: After the lithium ore enters the kiln, it first passes through the preheating zone, where the material gradually heats up, part of the moisture and organic impurities are volatilized, and the material enters the calcination preparation state.
- High-temperature calcination: In the high-temperature zone of the rotary kiln, spodumene or other lithium ores are heated to about 1000℃-1300℃. Through chemical reactions, the lithium in the lithium ore is converted into soluble lithium compounds. The common reaction process is the reaction of spodumene and sodium carbonate (Na₂CO₃) to produce lithium carbonate (Li₂CO₃).
- Cooling: The calcined material enters the cooling zone and is quickly cooled to prevent the material from continuing to react at high temperature, ensuring the quality and chemical stability of the product. The cooled lithium carbonate product is discharged through the kiln tail and enters the subsequent process.
- Tail gas treatment: The waste gas generated during the calcination process, especially the waste gas containing dust, gaseous by-products and flue gas, is purified by the tail gas treatment device to ensure that it meets environmental emission standards.
Application field
Lithium battery industry: Lithium carbonate is a key raw material in the manufacture of lithium batteries, especially in lithium-ion batteries for new energy vehicles, and the demand is huge. The high-purity lithium carbonate produced by the rotary kiln is used for the synthesis of positive electrode materials.
Glass and ceramics: Lithium carbonate is used to make special glass and ceramics, which can reduce the melting temperature of glass and enhance the physical properties of products.
Chemical industry: Lithium carbonate is an important intermediate in the production of lithium compounds, such as lithium hydroxide and lithium chloride, which are widely used in lubricants, medicines, refrigerants and other fields.
Pharmaceutical industry: Lithium carbonate is used in the manufacture of certain drugs, such as drugs for the treatment of mental illness.
Advantages
High production capacity: The rotary kiln can continuously and mass-produce lithium carbonate to meet the rapidly growing needs of the lithium battery industry.
Easy operation: The rotary kiln has a high degree of automation, stable operation and low operation and maintenance costs.
Good environmental protection: Through the efficient tail gas treatment device, the exhaust gas and dust emissions generated during the calcination process are effectively controlled, which meets the environmental protection requirements of modern industry.
Low energy consumption: The use of advanced waste heat recovery system and efficient combustion device reduces the energy consumption during the calcination process.