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Coke and its preparation method

A technology of coke and coking coal, which is applied in the field of coke and its preparation, and can solve the problems of low mechanical strength of coke

Active Publication Date: 2019-06-25
沂州科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the strength of this coke reaches more than 65% after the reaction, which meets the needs of blast furnace ironmaking while expanding coking coal resources and reducing coal blending costs, the mechanical strength of this coke is low and needs to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0046] A method for preparing coke, comprising the steps of:

[0047] Step 1: Weigh 1 / 3 coking coal, lean coal, main coking coal, lean coal, boric acid, borax, boron oxide, titanium boride, titanium dioxide, pitch, petroleum coke, tar residue, polypropylene, fluorinated aluminum and yttrium chloride;

[0048] Step 2: First mix 1 / 3 coking coal, lean coal, main coking coal and lean coal, then crush, then add boric acid, borax, boron oxide, titanium boride, titanium dioxide, pitch, petroleum coke, tar residue, poly Propylene, aluminum fluoride and yttrium chloride are stamped, and then carbonized and coked. The coking temperature is 950-1050 ° C, and the coking time is 18-20 hours to obtain red coke;

[0049] Step 3: adding quenching water to the red coke to quench the coke, and drying to obtain coke after quenching.

[0050] Table 2, coke preparation method parameter table

[0051]

Example 1

Example 2

Example 3

Example 4

Example 5

Coke quen...

Embodiment 3

[0096] Example 3 is superior to Comparative Examples 2 and 3 in terms of reactivity, post-reaction strength, ash content, sulfur content, crushing strength and abrasion resistance.

[0097] Comparative Example 4 is inferior to Comparative Examples 2 and 3 in both indicators of reactivity and post-reaction strength. It can be seen that both yttrium chloride and aluminum fluoride can reduce the reactivity and improve the strength after reaction. However, the combined use of yttrium chloride and aluminum fluoride leads to a reduction in reactivity and an increase in strength after the reaction than the sum of the reduction in reactivity and the increase in strength after the reaction when yttrium chloride and aluminum fluoride are used alone . Therefore, yttrium chloride and aluminum fluoride can produce complex effect in the present invention, increase the reduction degree of reactivity and the improvement degree of strength after reaction.

[0098] Comparative Example 4 is si...

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PUM

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Abstract

The invention discloses coke and a preparation method thereof. The coke is made by coking of mixed coal; the mixed coal comprises, by weight, 65-75 parts of 1 / 3 coking coal, 5-10 parts of lean coal, 15-20 parts of coking coal, and 3-8 parts of meager lean coal. The coke and the preparation method thereof have the advantage that the coke has high crushing strength and wear resistance.

Description

technical field [0001] The invention relates to coke, in particular to a coke and a preparation method thereof. Background technique [0002] Coal chemical industry refers to the process of using coal as raw material and converting coal into gas, liquid and solid fuels and chemicals through chemical processing, mainly including coal gasification, liquefaction, dry distillation, tar processing and calcium carbide acetylene processing. Among them, the main product obtained from coal dry distillation is coke. An important use of coke is blast furnace ironmaking in the steel industry. According to the coke's ash content, sulfur content, mechanical strength, reactivity and post-reaction strength and other indicators, coke is divided into primary coke, secondary coke and tertiary coke. [0003] The Chinese patent with publication number CN104694145A discloses a kind of coke and coking method equipped with Indonesian gas coal. The coke is made by coking with the following mass p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B1/00C10B57/06C10B57/04
CPCC10B1/00C10B57/04C10B57/045C10B57/06
Inventor 张五洲
Owner 沂州科技有限公司
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