Complete set and method of light-calcined magnesia and heavy-calcined magnesia production line by magnesite

Abstract

The invention belongs to magnesite calcining equipment and methods and relates to a complete set and method of a light-calcined magnesia and heavy-calcined magnesia production line by magnesite. The complete set comprises a pulverizing device, a light calcining device and a heavy calcining device connected in sequence. The method comprises the steps of (1) crushing and pulverizing magnesite, and feeding the resulting material into a powder cabin; (2) metering the material in the powder cabin, feeding the material to a multistage suspension preheating system, and performing reservoir calcining in a decomposing furnace; (4) pelleting the material in a light calcining reservoir, feeding pellets to a rotary kiln for calcining, cooling, and performing heavy calcining to obtain heavy calcined material; (3) subjecting the calcined material to suspension cooling to finish light calcining so as to generate light calcined magnesia, and feeding the light calcined magnesia; using waste heat of the rotary kiln and a cooling unit in the decomposing furnace and the multistage suspension preheating system, and allowing the two systems to produce in the same so that energy conservation and emission reduction are achieved. The complete set and method have the advantages, for example, light calcining and heavy calcining processes are combined, the technical process is simple, energy consumption is low, and zero pollution is discharged.

Description

technical field [0001] The invention relates to a device and method for calcining magnesite, in particular to a complete set of device and method for a production line of light-burned magnesite and heavy-burned magnesite. Background technique [0002] my country's natural magnesite resources are very rich, but after years of mining, magnesite is decreasing day by day. Most of the production of light-burned magnesia and heavy-burned magnesia in my country belongs to extensive production methods. The production enterprises have poor equipment, high energy consumption and pollution. Large scale, harsh working environment, high labor intensity of workers, difficulty in controlling product quality and lack of technology. Contents of the invention [0003] The purpose of the present invention is to provide a complete set of equipment and methods for the production line of magnesite light-burned magnesia and dead-burned magnesia, so as to change the problems of the existing extens...

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Problems solved by technology

[0002] my country's natural magnesite resources are very rich, but after years of mining, magnesite is decreasing day by day. Most of the production of light-burned magnesia and heavy-burned magnesia in my country belongs to extensive production methods. The production enterprises have poor equipment, high energy consumption and pollution. Large size, harsh working environment, high labor intensity of workers, difficulty in controlling product quality and lack of technology

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