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Method for controlling coke sulfur content of coking by using high-sulfur coking coal

A technology of high-sulfur coking coal and control method, which is applied in the control of sulfur content of coke, high-sulfur coking coal participates in the field of coke sulfur content control in coking, and can solve the problems of unreported coke sulfur content and coke quality in coal blending coking

Active Publication Date: 2020-01-24
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] However, in the prior art, there is no report on coal blending coking and controlling coke sulfur content and coke quality according to the technical indicators of high-sulfur coking coal.

Method used

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  • Method for controlling coke sulfur content of coking by using high-sulfur coking coal
  • Method for controlling coke sulfur content of coking by using high-sulfur coking coal
  • Method for controlling coke sulfur content of coking by using high-sulfur coking coal

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Experimental program
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Effect test

Embodiment 1

[0047] This embodiment discloses a coke sulfur content control method in which high-sulfur coking coal participates in coking, wherein the selected high-sulfur coking coal sulfur content S td高硫焦煤 = 1.85%;

[0048] Also selected other coking coals, such as low-sulfur coking coal, coking coal sulfur S td低硫焦煤 =0.45%; the coking coal in this embodiment is composed of high-sulfur coking coal and low-sulfur coking coal.

[0049] The ash content and Na content of the high sulfur coking coal and other coal types were determined respectively 2 O%, CaO%, MnO% and SiO 2 %, and the softening temperature, solid-soft temperature range, K value and ratio are as follows:

[0050]

[0051]

[0052] K value of each coal type, mixed coal S td , blended coal K value, and blended coal solid-soft temperature range △T are calculated using the following formula:

[0053] Various types of coal K n =A d，n ×(Na 2 O%+CaO%+MnO%) / SiO 2 %;

[0054] Among them, A d，n is the ash content of a ...

Embodiment 2

[0062] This embodiment discloses a coke sulfur content control method in which high-sulfur coking coal participates in coking, wherein the selected high-sulfur coking coal sulfur content S td高硫焦煤 = 2.30%;

[0063] Also selected other coking coals, such as low-sulfur coking coal, coking coal sulfur S td低硫焦煤 = 0.45%;

[0064] The ash content and Na content of the high sulfur coking coal and other coal types were determined respectively 2 O%, CaO%, MnO% and SiO 2 %, and the softening temperature, solid-soft temperature range, K value and ratio are as follows:

[0065]

[0066] K value of each coal type, mixed coal S td , blended coal K value, and blended coal solid-soft temperature range △T are calculated using the following formula:

[0067] Various types of coal K n =A d，n ×(Na 2 O%+CaO%+MnO%) / SiO 2 %;

[0068] Among them, A d，n is the ash content of a certain coal in the blended coal; Na 2 O% is the Na of a certain coal in the blended coal 2 O mass percentage c...

Embodiment 3

[0075] This embodiment discloses a coke sulfur content control method in which high-sulfur coking coal participates in coking, wherein the selected high-sulfur coking coal sulfur content S td高硫焦煤 = 2.56%;

[0076] Also selected other coking coals, such as low-sulfur coking coal, coking coal sulfur S td低硫焦煤 = 0.45%;

[0077] The ash content and Na content of the high sulfur coking coal and other coal types were determined respectively 2 O%, CaO%, MnO% and SiO 2 %, and the softening temperature, solid-soft temperature range, K value and ratio are as follows:

[0078]

[0079] K value of each coal type, mixed coal S td , blended coal K value, and blended coal solid-soft temperature range △T are calculated using the following formula:

[0080] Various types of coal K n =A d，n ×(Na 2 O%+CaO%+MnO%) / SiO 2 %;

[0081] Among them, A d，n is the ash content of a certain coal in the blended coal; Na 2 O% is the Na of a certain coal in the blended coal 2 O mass percentage c...

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Abstract

The invention discloses a method for controlling the coke sulfur content of coking by using high-sulfur coking coal, and belongs to the technical field of blended coal coking. The method comprises: taking high-sulfur coking coal, mixing with other coking coal to form blended coal, and coking the blended coke to obtain coke, wherein the sulfur content Std of the blended coal is smaller than 1.0%, the coke sulfur content influence factor calculated value K of the blended coal is larger than 0.90, and the solid-soft temperature interval calculated value [delta]T of the blended coal is larger than70 DEG C. According to the control method of the invention, the proportion of the sulfur solidified from the coking blended coal into the coke can be controlled according to the properties of the high-sulfur coking coal, so that the proportion of the sulfur solidified from the high-sulfur coking coal into the coke is as low as possible so as to avoid the excessive increase of the sulfur load of ablast furnace.

Description

technical field [0001] The invention relates to a method for controlling the sulfur content of coke, and belongs to the technical field of coking with mixed coal, in particular to a method for controlling the sulfur content of coke in which high-sulfur coking coal participates in coking. Background technique [0002] my country's coal resource situation determines the increasing shortage of high-quality coking coal, among which high-quality low-sulfur resources are even more scarce, and are becoming less and less. The price difference between high-sulfur coking coal and low-sulfur coking coal is as high as 200 yuan / ton or more. [0003] Sulfur in coking coal mainly includes iron sulfide sulfur, sulfate sulfur and organic sulfur. During the coking process, part of the sulfur in the coal enters the gas, and the sulfur entering the gas can be recovered to obtain sulfur or ammonium sulfate products. The other part enters coke. Sulfur is a harmful impurity in coke. The sulfur in...

Claims

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Application Information

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IPC IPC(8): C10B57/04
CPCC10B57/04
Inventor 鲍俊芳冯强常红兵桂正祥宋子逵项茹刘睿冯柏华周森林鲁婷
Owner 武汉钢铁有限公司