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A device and method for producing light-burned magnesia from magnesite flotation concentrate powder

A light-burned magnesia and flotation concentrate technology is applied in the field of devices for producing light-burned magnesia from magnesite flotation concentrate powder, which can solve problems such as inapplicability, avoid material blockage, improve drying efficiency, and rational The effect of effective warm-up

Active Publication Date: 2018-11-16
辽宁东大粉体工程技术有限公司
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  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing technology and process equipment cannot be applied to the production of calcined magnesia by flotation and separation of magnesite concentrate powder, and to provide a method for producing light-burned magnesite by using magnesite flotation concentrate powder device and method

Method used

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  • A device and method for producing light-burned magnesia from magnesite flotation concentrate powder

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Embodiment 1

[0034] The magnesite flotation concentrate powder used in this embodiment is the wet concentrate powder obtained through flotation separation and purification of Dashiqiao magnesite. The MgO content in the Dashiqiao magnesite is 35% to 45%. The MgO content in the flotation concentrate powder is 47.50%, and the water content is 12.0%. In this embodiment, the device and method for producing light-burned magnesia with magnesite flotation concentrate powder are adopted, and the production scale design for production is 80 tons. / day (3300kg / h), the output of producing light-burned magnesia reaches 4000~4500kg / h, the main and auxiliary furnace type structural furnace, flash drying machine, secondary preheating system used in the present embodiment, temperature error control within ±50°C.

[0035] A device for producing light-burned magnesia with magnesite flotation concentrate powder, the device includes a feeder, a flash dryer, a raw material dry product collector, a secondary pre...

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Abstract

The invention relates to an apparatus for producing light calcined magnesia by using magnesite flotation concentrate powder and a method thereof. The apparatus comprises a feeding machine, a flash evaporation drying machine, a raw material dry material trap, a multistage preheating system, a pocket-type filter, a dynamic calciner, a combustion gas combustion furnace, a finished product trap, an induced draught fan and a pipe-line system. The method comprises the following steps: 1) the magnesite flotation concentrate powder is sent to the flash evaporation drying machine by the feeding machine for drying treatment; 2) the dried material is trapped by the raw material dry material trap, then is sent to the multistage preheating system; and 3) the preheated material is collected through the multistage preheating system, is sent to the dynamic calciner for calcining and decomposition to generate light calcined magnesia. The material drying, preheating and calcining processes are dilute-phase current-carrying heat transfer. The apparatus and the method are mainly used for producing the light calcined magnesia by the low-grade magnesite flotation dehydrated concentrate powder, and have the advantages of strong specificity, simple process flow, low energy consumption, easy operation, and harmlessness discharge.

Description

Technical field: [0001] The invention belongs to the technical field of magnesite calcination, and in particular relates to a device and method for producing light-burned magnesia by using magnesite flotation concentrate powder. Background technique: [0002] Magnesite is an important raw material for the production of magnesia materials and is a non-renewable resource. High-grade magnesite is mined year by year, and its reserves are getting less and less, while low-grade magnesite cannot be directly used as a raw material for calcined magnesia. Therefore, the development of low-grade magnesite ore, tailings, and mineral processing waste to realize the comprehensive utilization of magnesite resources has become an inevitable direction of industry development. [0003] At present, the relevant mining industry in Dashiqiao, Liaoning, cooperates with Dongda Company to develop the utilization of low-grade magnesite with MgO content between 35% and 45%, and obtains better separa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B2/10
CPCC04B2/102
Inventor 李忠麟程巨王鸣彦张继宇
Owner 辽宁东大粉体工程技术有限公司
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