Coal powder injection mineral roasting device and technology

Abstract

The invention discloses a coal powder injection mineral roasting device which comprises a furnace body, wherein the furnace body is divided into a preheating section, a roasting section and an air cooling section from the top down sequentially; a combustion chamber is arranged at the roasting section, and connected with a coal powder injection device; a smoke discharge port is formed in the preheating section; a circulation smoke inlet and a material outlet are formed in the air cooling section; a circulation air duct is formed between the smoke discharge port and the circulation smoke inlet; a directional pressure device is arranged on the circulation air duct; a feeding section is arranged at the top of the furnace body, and provided with an automatic sealing device; and a finished mineral collection section is arranged at the bottom of the furnace body. With the adoption of the mode of heating minerals through combustion of injected coal powder, the roasting and processing cost of the minerals is reduced effectively; in addition, smoke generated due to the combustion of the coal powder is treated circularly, so that the problem of pollutant emission is effectively solved; and energy conservation and environmental protection are facilitated.

Description

technical field [0001] The invention relates to a coal powder-injected mineral roasting device and a process, belonging to the field of mineral processing. Background technique [0002] Roasting refers to the reaction process of solid materials under the condition of high temperature without melting, which can include oxidation, pyrolysis, reduction, halogenation, etc., and is usually used in inorganic chemical and metallurgical industries. At present, in the process of mineral roasting, the method of burning and roasting minerals with gaseous fuels is mostly used. Since gaseous fuels need to be made from solid fuels such as coal through dry distillation or gasification steps, the cost of this mineral roasting method is relatively high. Contents of the invention [0003] Based on the above technical problems, the present invention provides a coal powder-injected mineral roasting device and process, which uses coal powder to burn and heat minerals, which effectively reduces...

AI Technical Summary

Problems solved by technology

[0003] Based on the above technical problems, the present invention provides a coal powder-injected mineral roasting device and process, which uses coal powder to burn and heat minerals, effectively reducing the cost of mineral roasting processing, and at the same time, the flue gas produced by coal powder combustion is recycled. , effectively solve the problem of pollutant discharge, energy saving and environmental protection

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