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Carbon material stuffing with low adhering index, coke briquette with the stuffing as main material and its production process

A technology of main raw material and cohesive index, applied in coking ovens, petroleum industry, etc., can solve problems such as cohesion, high ash content of coke powder, low strength, etc., and achieve the goal of saving coking coal resources, improving coke quality and coke ratio coefficient Effect

Inactive Publication Date: 2004-04-07
刘英旺 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The low cohesive index carbon material filler of the present invention solves the problem that the source of coke powder in the production of coke with coke powder as raw material is uncertain and the particle size of coke powder is too uniform, which is not conducive to the molding of coke green blanks of different sizes And the deficiency of high ash content in coke powder; the form coke produced by using the filler of the present invention solves the shortcomings of large porosity, low strength, easy breakage and difficulty in improving the form coke blockiness that are ubiquitous in the current form coke production
The method of the present invention solves the problem that the low caking index and / or low expansion ordinal carbon material, especially low caking property / low expansion raw coal, cannot be used as the main raw material or single raw material to produce high-quality molded coke products under the existing technical conditions problem or the problem that a large amount of binders such as main coking coal and coal tar must be added for the production of molded cokes of this type of raw material; The lack of small molded coke pieces and monotonous shape; the present invention proposes a new process for producing molded coke and its molded coke raw materials (the raw material for the next batch of molded coke, that is, the molded coke filling material of this furnace) in the same furnace, and solves the problem of molded coke at the same time. During the production process, it is necessary to add additional spacer materials between the coke blocks
The method of the present invention also solves the problem of deformation and adhesion of spherical coke in the carbonization process and the problem that large-diameter (diameter greater than 30mm) spherical coke cannot be produced under the existing technical conditions

Method used

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  • Carbon material stuffing with low adhering index, coke briquette with the stuffing as main material and its production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 Choose 100 tons of No. 2 anthracite, its cohesive index is 0, volatile content is 9%, ash content is 10%, and it is crushed to particles below 100mm, and it is used as raw filling material and put into the furnace for dry distillation at a temperature of 850-1000°C In 15 hours, 92 tons of fillers were obtained. After crushing the filling material, sieve it into six raw materials with different particle size grades as shown in Table 1 and save them for future use. This filler can be directly used as a blast furnace charring agent. It is also the main raw material for producing the coke of the present invention. Its physical and chemical indicators are 11% ash and 1.6% volatile matter.

Embodiment 2

[0031] Example 2 Select 20 tons of Shanxi Guxian No. 2 primary coking coal with a caking index of 84, 25% volatile content, and 8% ash content; 60 tons of calcined anthracite with a caking index of 0, 1.5% volatile content, and 10% ash content 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 100 mm, and 100 tons of raw filler were obtained.

[0032] Get the filler obtained in Example 1, carry out batching according to the classification reference data of Table 1 and the diameter of the coke block to be made, for example, the diameter of the coke block is designed to be 160mm, and between the reference data 100-200mm, refer to as listed in Table 1 Example 2 The range of ingredients is selected. Take 50 tons of filler and 10 tons of high-temperature asphalt and heat them separately. The heating temperature of the filler is 300°C, and the heating t...

Embodiment 3

[0033] Example 3 Select 60 tons of Shanxi Hongdong No. 2 fat coking coal with a caking index of 83, a volatile content of 34%, and ash content of 8%, and 40 tons of calcined coal with a caking index of 0, a volatile content of 1.4%, and ash content of 0.3%. Petroleum coke is mixed, the ash content of the mixture is 5%, the volatile content is 21%, the cohesive index is 30, and it is pulverized to a particle size below 100 mm to obtain 100 tons of raw filler.

[0034] Take the filler material obtained in Example 2 to produce spherical coke with a particle size of 135 mm, select a total of 60 tons of materials according to Reference Example 3 in Table 1, take 15 tons of petroleum pitch, mix the two and heat to 200 ° C to fully stir, and use 240 kg / cm 2 The press is pressurized and formed to produce a 75-ton coke green billet. Get 100 tons of raw fillers obtained in this example and mix them into a furnace for dry distillation. The furnace temperature is 900° C., the dry distil...

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Abstract

The carbon material stuffing with low adhering index is prduced with carbon containing material of adhering index less than 40 or expansion coefficient smaller than 3 and granularity smaller than 100 mm, and through dry distillation at 850-1300 deg.c. The carbon material stuffing with low adhering index has low strength and low volatile content. The coke briquette with the stuffing as main material has high strength, high density of 1.2-1.6 g / cu cm and low volatile content of 0.5-2 %, and is balls of diameter greater than 30 mm. The coke briquette is suitable for use in large blast furnace. The present invention makes it possible to coke with anthracite and lean coal.

Description

technical field [0001] The invention relates to a coking product of a mixture of solid carbonaceous material and pitch or tar or their analogs and a production method thereof. Background technique [0002] Traditional coke is the product of carbonization after blending of different kinds of bituminous coal. These bituminous coal varieties usually belong to coals with a moderate degree of coalification (metamorphism), that is, coals with higher volatile content, higher caking index and better coking performance. Due to the limited reserves of main coking coal and other coal types suitable for coal blending and coking, the mining cost is high, so the price is also high. And a large amount of low caking coal or high metamorphic coal such as lean coal and anthracite coal that are not suitable for coking have a very low price. For this reason, people have proposed many technical schemes of utilizing weakly caking coal or non-caking coal to make briquettes for coking. Its core ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B57/04
Inventor 刘英旺刘建华
Owner 刘英旺
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