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Dolomite calcination heat-recovering method and system

A waste heat recovery and dolomite technology, applied in the field of dolomite calcination, can solve the problems of high energy consumption, environmental pollution, waste heat of dolomite in the calcining rotary kiln combustion system, avoid natural loss, improve working environment, and reduce fuel consumption Effect

Inactive Publication Date: 2009-03-04
SHENYANG ALUMINIUM MAGNESIUM INSTITUTE
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Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a dolomite calcination waste heat recovery method and system, the purpose of which is to solve the pollution of the dolomite calcination process to the environment, the waste of dolomite waste heat after calcination and the high energy consumption of the calcination rotary kiln combustion system question

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  • Dolomite calcination heat-recovering method and system

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Embodiment Construction

[0020] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited by the embodiments.

[0021] A dolomite calcining waste heat recovery method of the present invention comprises the following steps: making the material in the dolomite rotary kiln 1 rotate with the kiln body, and sending the high-temperature combustion gas 5 produced by the combustion system 2 of the rotary kiln combustion fuel 4 into the dolomite rotary kiln In the kiln 1, the high-temperature combustion gas 5 is sent into the dolomite rotary kiln 1 against the direction of material movement; the calcined dolomite 6 enters the heat exchange equipment 3 through the kiln head launder, and at the same time, the cold air 8 passes through the general fan during the heat exchange process. Continuously sent to the heat exchange equipment 3, the cold air 8 is evenly passed through the gap of t...

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Abstract

The invention discloses the dolomite calcination in the magnesium smelting field, and particularly relates to a residual heat recovery method for the dolomite calcination, and a system thereof. The waste heat recovery method comprises the following steps: materials in a dolomite rotary kiln rotate along with the kiln body; high-temperature combustion gas produced by the combustion of a rotary kiln combustion system is delivered into the dolomite rotary kiln; the calcined materials enter a heat exchanger through a kiln head chute; at the same time, cold air is delivered to the heat exchanger; and the cold air after the heat exchange is discharged out through the hot air hole of the heat exchanger, and is introduced to the rotary kiln combustion system through a thermal insulation pipeline. The invention has the advantages that the residual heat taken away by the materials during the dolomite calcination is recycled, and is applied to a combustion apparatus used for calcining the dolomite for reducing the fuel consumption thereof and achieving the purposes of energy conservation and emission reduction.

Description

technical field [0001] The present invention relates to dolomite calcination in the field of magnesium smelting, in particular to a dolomite calcination waste heat recovery method and system for recovering the waste heat taken away by materials during dolomite calcination, and then applying the waste heat to a combustion device for calcining dolomite , reduce its fuel consumption, and achieve the purpose of energy saving and emission reduction. Background technique [0002] Dolomite calcination is an important part of the metal magnesium smelting process. Its function is to use the rotary kiln to calcine the dolomite, the raw material for the production of metal magnesium, to improve the reduction activity of the dolomite. The calcined dolomite enters the reduction process after being processed into balls, and completes the reduction, evaporation and crystallization process in a vacuum state accompanied by a suitable reducing agent and reduction temperature. [0003] The ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B2/10
Inventor 于国友王忠心曹广和曹成山苏晓燕张晓新
Owner SHENYANG ALUMINIUM MAGNESIUM INSTITUTE
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