Manganese processing rotary kiln with gas furnace supplying heat

Abstract

The invention discloses a manganese processing rotary kiln with a gas furnace supplying heat. The rotary kiln is characterized in that the rotary kiln is arranged obliquely, and is internally provided with a burner; the burner is connected with an air control valve and a gas control valve; an air-lock valve is arranged at the high end of the rotary kiln for feeding, and is connected with a dust collector through a fin section and an air pipe; the fin section is externally provided with a cover cylinder; the air pipe is externally provided with an extension-type air heat exchanger; after the cover cylinder and a lower air exhaust port of the air heat exchanger are converged, one branch is connected with the gas control valve through an air blower and the gas furnace, and the other branch is connected with the air control valve through the air blower; and the rotary kiln is internally provided with raised fire-resistant plates. The raised fire-resistant plates increase a heat transfer area of the rotary kiln, and facilitate stirring a material and reaching the reaction temperature rapidly, so that the heat efficiency is improved; the fin section and the air heat exchanger achieve waste heat utilization, and facilitate burning; rapid cooling is performed on a pellet material by a rapid cooling liquid bath, and a large amount of water can be evaporated through a reaction, so that environment protection pressure due to production liquid expansion can be alleviated effectively; and the rotary kiln is particularly suitable for burning processing of manganese ore and has broad application prospects.

Description

technical field [0001] The invention relates to a rotary kiln, in particular to a manganese processing rotary kiln for heating by a gas furnace. Background technique [0002] Due to its strong adaptability, low operating cost and high reliability, the rotary kiln is one of the main preferred equipment for mineral batching, pelletizing, reaction and drying, especially suitable for the processing and burning of manganese ore. During the working process, the rotary kiln needs to consume fuel to maintain a suitable high temperature in the kiln. Therefore, the exhaust gas discharged from the rotary kiln contains a lot of heat energy and dust. It is necessary to purify the exhaust gas and recover the exhaust heat to achieve energy saving and emission reduction. [0003] The rotary kiln is generally cylindrical, so the heat transfer area between the material and the kiln body is very small, resulting in low thermal efficiency. Therefore, designing a rotary kiln for manganese proce...

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Problems solved by technology

[0003] The rotary kiln is generally cylindrical, so the heat transfer area between the material and the kiln body is very small, resulting in low thermal efficiency

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