A clean and environmentally friendly calciner and method for indirect processing of 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 whitening activity, heat loss, difficult recovery, etc., achieve high purity, reduce water vapor content, Purity-enhancing effect
Active Publication Date: 2022-03-22
新引擎(长沙)科技发展有限公司
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[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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[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 and environment-friendly calciner and method for indirect processing of dolomite. The calciner includes a gas collection pipeline and a furnace body, and the furnace body includes a blanking bin, a furnace and a discharge bin; the interior of the furnace is A calcination area is formed, the furnace body also includes a heating device; the top of the furnace is provided with a sealing plate to close the furnace mouth of the furnace, and a communication port is opened on the sealing plate; the blanking bin The blanking port communicates with the calcination area through the communication port; an exhaust chamber is formed between the outer wall of the blanking bin and the sealing plate through a coaming plate, and the exhaust chamber is communicated through the The port is in communication with the calcination zone; the gas collection pipe is in communication with the exhaust chamber. The invention can improve the activity and purity of calcined white, reduce the impurity content in flue gas, and obtain high-purity CO 2 gas, and can also reduce the energy consumption required for dolomite calcination.
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 ...
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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 新引擎(长沙)科技发展有限公司