Sectional coke and its production method and pressure forming equipment

A technology of molding equipment and coke preforming, which is applied in the field of coke, can solve the problems such as unresolved difficulties in demoulding molded products and molds, the inability to add spacers, and adhesion of spherical coke, so as to solve the problems of adhesion and deformation and improve The effect of temperature and density improvement

Inactive Publication Date: 2004-04-14
刘英旺 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the use of organic binders such as pitch, tar and other highly cohesive substances and raw coal or other cohesive materials with a high cohesive index in the production of coke; and a relatively large pressure (generally 30kg / cm 2 ) above, the demoulding difficulties between the molded product and the mold caused by these two reasons have not been resolved
The second problem is the adhesion of spherical coke during the carbonization process
Spherical coke is not easy to delaminate when entering the furnace, so spacers cannot be added; gaps cannot be formed in the horizontal direction. Therefore, the problem of adhesion of spherical coke in the carbonization process has become another problem that cannot be put into production.

Method used

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  • Sectional coke and its production method and pressure forming equipment
  • Sectional coke and its production method and pressure forming equipment
  • Sectional coke and its production method and pressure forming equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1 selects 20 tons of No. 2 main coking coal from Guxian County, Shanxi Province with a caking index of 84, 25% volatile content and 8% ash; 60 tons of calcined anthracite with a caking index of 0, 1.5% volatile content and 10% ash. tons; 20 tons of calcined pitch coke with a cohesive index of 0, a volatile content of 1.3%, and an ash content of 0.5% were mixed and pulverized until the particle size was less than 10 mm, and 100 tons of shaped coke raw materials were obtained.

[0038] The above raw materials plus 8 tons of pitch coke were heated to 120°C and mixed. Pressurize to 50kg / cm with a pressure forming machine 2 Molding under the conditions, the mold is spherical, with a diameter of 100mm, and 100 tons of coke preformed products are obtained after all molding. The preformed product is mixed with 30 tons of anthracite coal with a cohesive index of 10 and a particle size of less than 15mm, and is charged into a coke oven at a temperature of 850°C for carbo...

Embodiment 2

[0039] Example 2 Take 200 tons of coke powder with a particle size of less than 20mm, add 14 tons of tar, mix at a temperature of 100°C, and pressurize to a pressure of 350kg / cm in a pressure molding machine 2 , Model selection oval, long diameter 250mm, short diameter 200mm. 214 tons of molded coke preforms and 130 tons of Shanxi Shouyang lean coal with a caking index of 15 and a particle size of 5mm were mixed into the furnace for carbonization. 210 tons of molded coke and 118 tons of coke powder were obtained.

Embodiment 3

[0040] Embodiment 3 The molding pressure of the coke preformed product of this example is 250kg / cm 2 , the shape is olive-shaped, the length of both ends is 150mm, and the middle diameter is 100mm.

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Abstract

The present invention relates to a formed coke, it is made up by using raw coal and / or semi-coke and / or coke powder and organic adhesive through the processes of mixing, press-forming and carbonization, and in which the described formed cake is made into the form of spheroid, its diameter is 30-300 mm, and its density is 1.25-1.5 g / cu.cm. Said invention also provides the pressure forming equipment for producing the above-mentioned spheriod formed coke and its production method.

Description

technical field [0001] The invention relates to a type coke, a production method of the type coke and a molding device thereof. Background technique [0002] The form coke of the prior art is generally square, rectangular or cylindrical in shape. According to theoretical analysis and experimental results, spherical coke has the best effect on improving the process parameters of blast furnace, because the porosity between spherical coke or between spherical coke and other materials in blast furnace is relatively large, and its own high compressive strength has high compressive strength. It is beneficial to improve the fluidity of gas and liquid in the furnace and to increase the temperature of the furnace. There are two main reasons restricting the production of spherical coke at present. One is the demoulding problem in the high-pressure molding process of spherical coke; the other is the sticking problem of spherical coke in the coking (carbonization) process. [0003] T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B57/00
Inventor 刘英旺刘建华
Owner 刘英旺
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