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Profile coal reductant ceramic roasting method

A reducing agent and briquette technology, which is applied in the petroleum industry, solid fuel, fuel, etc., can solve the problems that do not meet the requirements of local materials and the use of cheap fuel, so as to shorten the firing time, reduce labor intensity, and significantly save the cost. and the effect of social benefits

Inactive Publication Date: 2005-12-28
罗海甦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Does not meet the country's requirements for the ceramic industry to obtain local materials and use cheap fuel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: In φ6M and 96M 3 In the downdraft kiln, the reduction flame is used to fire the high voltage electric porcelain.

[0026] 1. Mix 2% combustion-supporting binder into anthracite to make φ30MM briquette, as raw coal, produce H in a φ1.2M mixed gas furnace 2 =13.5%, CO=27.8% mixed gas, used as reducing agent.

[0027] 2. Mix 2.5% binder and combustion catalyst into the bituminous coal currently used in porcelain factories to make ignition briquettes, medium-temperature briquettes, and high-temperature briquettes to replace the original raw coal plan for calcining porcelain.

[0028]

[0029] The amount of coal used in the present invention includes the amount of coal used to make the reducing agent.

Embodiment 2

[0030]Example 2: In a tunnel kiln with a length of 53M, adopt the method of Example 1 to manufacture medium-temperature briquettes, high-temperature briquettes and reducing agent fired glazed bricks.

[0031] The briquettes replace the original raw coal, and the above two types of briquettes are put into the kiln for combustion, and the reducing agent is injected from the kiln and high-temperature zone respectively to form a reducing atmosphere and increase the temperature of the kiln. The coal saving rate reaches 18%, the firing speed increases by 7%, and the chimney emits light blue smoke, which improves the glaze color of porcelain, achieves energy saving and environmental protection, and improves the quality of porcelain.

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PUM

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Abstract

The invention discloses a ceramic calcination method of coal briquette combined with a reducing agent. Oxidation flame combustion is carried out in the kiln. When entering the high temperature and reduction period, mixed gas or semi-water gas is injected into the kiln and mixed with the high-temperature flue gas for combustion to increase the temperature in the kiln. Achieve smoke elimination, dust reduction, sulfur fixation, improve ceramic firing quality, shorten firing time, reduce labor intensity of workers, save coal by 15%, make full use of coal resources, and have significant economic and social benefits.

Description

technical field [0001] The invention relates to a method for burning coal, in particular to a method for calcining briquette-bonded reducing agent ceramics. technical background [0002] my country is a country with coal as the main energy source. Ceramic industrial kilns mainly use cheap coal as fuel. Tunnel kilns and downdraft kilns are the main equipment for calcining porcelain in coal-fired ceramic kilns. They are used in electric porcelain, chemical porcelain, daily-use Porcelain and other ceramic industries. The harmful gases such as smoke and sulfur dioxide produced during coal combustion cause environmental pollution to the atmosphere. In particular, the porcelain clay in southern my country belongs to primary kaolin with high iron content. During calcination, after the green body enters a high temperature of about 940°C, in order to make the Fe 2 o 3 It is reduced to ferrous iron and generates ferrosilicate with fluxing effect in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/64C10L5/10C10L9/10
Inventor 罗海甦
Owner 罗海甦