Continuous electric heating rotary furnace and process for preparing lithium manganate through rotary furnace

Abstract

The invention relates to a continuous electric heating rotary furnace and a process for preparing lithium manganate through the rotary furnace. A hearth heating area is arranged in a furnace tube of the continuous electric heating rotary furnace, and the furnace tube and the horizontal plane overall form a certain angle, so that the feeding end of the furnace tube is higher than the discharging end; the hearth heating area is divided into a plurality of temperature areas, each temperature area achieves independent temperature control heating, and a heat insulation layer of the furnace tube ismade from a high-temperature ceramic fiber material; and multiple sections of overall combined block structures are adopted by the furnace top of the furnace tube, and clearances between all the furnace top overall combined blocks are stuffed and sealed through alumina silicate fiber blankets. Compared with a traditional electric heating rotary furnace, the continuous electric heating rotary furnace is additionally provided with more heat insulation structures, and the temperature raising and heat insulation performance in the furnace are greatly improved. According to the process for preparing the lithium manganate, the calcining time of an existing lithium manganate process can be greatly shortened and is controlled within 10 hours, the production efficiency of a production enterprise can be improved, and energy consumption can be reduced.

Description

Technical field [0001] The application belongs to the technical field of rotary kilns, and in particular relates to a continuous electric heating rotary kiln. Background technique [0002] Rotary kiln is a thermal equipment for heat treatment of bulk powder or particles. In recent years, with the continuous development of science and technology, it has been widely promoted and used in the chemical, metallurgy, cement, refractory, non-metallic mining and other industries. [0003] Lithium manganate is one of the more promising lithium ion cathode materials. At present, most of the mass production of commercial lithium manganate uses lithium manganate raw materials for high-temperature calcination, but the existing calcining furnace is not tight enough to heat up and has the performance of heat preservation. Inferior, the reaction time of the lithium manganate calcination process is usually greater than 20 hours, which greatly limits the production efficiency of the production enterp...

AI Technical Summary

Problems solved by technology

[0003] Lithium manganate is one of the more promising lithium-ion cathode materials. At present, most of the mass production of commercial lithium manganate uses lithium manganate raw materials for high-temperature calcination. However, the existing calcination furnace insulation structure is not tight enough, and the performance of heating and heat preservation Poor, the reaction time for the lithium manganate calcination process is usually more than 20 hours, which greatly limits the production efficiency of the production enterprise, and the resource utilization rate is also low

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