Clean environment-friendly calcining furnace and method for indirectly treating dolomite

A clean and environmentally friendly dolomite technology, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of low activity of calcined white, heat loss, difficult recovery, etc., achieve high purity, reduce water vapor content, The effect of improving purity

Active Publication Date: 2022-02-01
CENT SOUTH UNIV
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  • Claims
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Problems solved by technology

[0012] The main purpose of the present invention is to provide a clean and environmentally friendly calciner and method for indirect processing of dolomite, aiming at solving the problem of low activity of calcined white, large amount of flue gas, CO 2 Difficult recovery and serious technical problems of heat loss

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  • Clean environment-friendly calcining furnace and method for indirectly treating dolomite
  • Clean environment-friendly calcining furnace and method for indirectly treating dolomite
  • Clean environment-friendly calcining furnace and method for indirectly treating dolomite

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Embodiment Construction

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0049] It should be noted that all directional indications (such as up, down, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship, movement, etc. between the components in a certain posture (as shown in the drawings), If the specific posture changes, the directional indication also changes accordingly.

[0050] In addition, in the present invention, descriptions such a...

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Abstract

The invention provides a clean environment-friendly calcining furnace and method for indirectly treating dolomite. The calcining furnace comprises a gas trapping pipeline and a furnace body, wherein the furnace body comprises a blanking bin, a hearth and a discharging bin; a calcining area is formed in the hearth; the furnace body further comprises a heating device; a sealing plate for sealing a furnace opening of the hearth is arranged at the top of the hearth, and a communicating opening is formed in the sealing plate; a blanking port of the blanking bin communicates with the calcining area through the communicating opening; an exhaust cavity is formed between the outer wall of the blanking bin and the sealing plate through surrounding of a surrounding plate, and the exhaust cavity communicates with the calcining area through the communicating opening; and the gas trapping pipeline communicates with the exhaust cavity. According to the invention, the activity and purity of calcined dolomite can be improved, the impurity content of flue gas is reduced, high-purity CO2 gas is obtained, and the energy consumption required for calcining the dolomite can also be reduced.

Description

technical field [0001] The invention relates to a calcining shaft furnace for dolomite, in particular to a clean and environment-friendly calcining furnace and a method for indirect processing of dolomite. Background technique [0002] Dolomite is an important calcium and magnesium resource. When calcined to 700-900°C, it loses carbon dioxide and becomes a mixture of calcium oxide and magnesium oxide. It is often called light-burned dolomite or calcined white in industry, and calcined white is dolomite. The mine produces high-quality magnesium carbonate, calcium and high-quality magnesium oxide, or it is an important direct and intermediate product used in various fields such as metallurgy, new materials, agriculture, and environmental protection. [0003] At present, the calcination of dolomite is mainly carried out in the vertical kiln. Although the vertical kiln has the advantages of simple structure, opposite material direction and heat flow direction, and less one-time ...

Claims

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Application Information

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IPC IPC(8): C04B2/12C01B32/50
CPCC04B2/12C01B32/50
Inventor 王庆伟柴立元李青竹闵小波史美清
Owner CENT SOUTH UNIV
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