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Lime kiln and lime preparation method

A lime and kiln body technology, applied in the field of chemical production, can solve the problems of low productivity and uneven heating of raw materials

Active Publication Date: 2021-07-06
明光瑞尔竞达科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The embodiment of the present invention provides a lime kiln to solve the problem of low productivity caused by uneven heating of raw materials in the lime kiln in the prior art

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  • Lime kiln and lime preparation method

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] like figure 1 As shown, the embodiment of the present invention provides a lime kiln, including: a lime kiln body 1 and one or more heat carrier heating devices 2 arranged outside the lime kiln body; the heat carrier heating device 2 includes a gas The input port 201, the air input port 202 and the heat carrier output port 203; the lime kiln kiln body 1 and the heat carrier output port 203 are connected through the heat carrier delivery pipeline 204; th...

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Abstract

The embodiment of the invention provides a lime kiln and a lime preparation method. The lime kiln comprises a lime kiln body and one or more heat carrier heating devices arranged outside the kiln body; the heat carrier heating device comprises a fuel gas input port, an air input port and a heat carrier output port; the kiln body is connected with the heat carrier output port through a heat carrier conveying pipeline; and a high-temperature-resistant lining is laid on the inner wall of the heat carrier conveying pipeline. When the device is used for preparing lime, no combustion flame exists in the kiln, but the heat carrier heating device is used for providing hot flue gas for the lime kiln so as to heat raw materials in the kiln, so that the temperature and the pressure of heat carrier gas can be accurately controlled, the temperature and the pressure in the lime kiln are stable, and the calcining efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of chemical production, in particular to a lime kiln and a lime preparation method. Background technique [0002] Lime is calcium oxide (CaO), which is widely used in iron and steel industry, calcium carbide industry, alumina industry, refractory materials and other industries. It is also one of the necessary raw materials for these large-scale industrial fields. For example, in the metallurgical industry, every ton steel would require about 70 kg of lime. The main raw material for lime production is limestone, the main component of limestone is calcium carbonate (CaCO 3 ), the basic principle of burning lime is to use high temperature to decompose calcium carbonate in limestone into calcium oxide and carbon dioxide. [0003] The basic reaction formula for the decomposition of calcium carbonate in limestone into calcium oxide and carbon dioxide is CaCO 3 →CaO+CO2↑-1777.4kJ / kgCaCO3. Under the heating cond...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B2/10
CPCC04B2/10
Inventor 王长春张紫豪梁晶晶汪小龙
Owner 明光瑞尔竞达科技股份有限公司
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