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High reactivity coke and its production method

A high-reactivity coke and production method technology, applied in coking ovens, petroleum industry, etc., can solve the problems of unfavorable operation of blast furnaces and less application research, and achieve the effects of low price, wide sources, and reduced fuel consumption

Active Publication Date: 2015-11-25
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because alkali metals are easy to circulate and enrich in blast furnaces, which is unfavorable to the operation of blast furnaces, so there are few studies on their applications

Method used

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  • High reactivity coke and its production method
  • High reactivity coke and its production method
  • High reactivity coke and its production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0031] The selection of each single coal and the coal blending scheme in Examples 1-4 are the same as those in Comparative Example, and the composition of the added steel slag is shown in Table 2.

[0032] Table II

[0033]

[0034] The steel slag was evenly mixed into the blended coal, and then the same 40kg coke oven coking test as that of the comparative example was carried out, and the detection method of the obtained coke was also the same as that of the comparative example. The particle size and amount of steel slag mixed into the blended coal are shown in Table 3.

[0035] Table three

[0036]

[0037] The properties of the cokes prepared in Comparative Examples and Examples 1-4 are shown in Table 4.

[0038] Table four

[0039]

[0040] As can be seen from the data in Tables 3 and 4, for the cokes of Examples 1-4, steel slag was added during coking, and the addition of steel slag made the coke strength index M 40 , M 10 And the ash and sulfur content have...

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Abstract

The invention provides a production method of high-reactivity coke. According to the method, mixed coal is adopted as a raw material to be coked, wherein steel slag is added in the raw material. The method has the advantages that the reactivity of the obtained coke is increased; the start temperature of the gasification reaction between the coke and carbon dioxide is reduced; the coke has low gasification reaction start temperature, so that the warm standby area temperature of a blast furnace can be reduced; the fuel consumption of the blast furnace can be reduced through cooperatively using high-reducibility ore; in the meantime, the post-reaction strength of coke can be guaranteed to meet the blast furnace iron making requirements; the steel slag serving as additive is low in price and extensive in source.

Description

technical field [0001] The invention relates to a coke production method, in particular to a high-reactivity coke production method. Background technique [0002] Coke is produced from a variety of coals through high-temperature coking. It is mainly used in blast furnace ironmaking and blast furnace smelting of non-ferrous metals such as copper, lead, and zinc. It acts as a reducing agent, heating agent, and material column skeleton. Coke reactivity refers to the ability of coke to chemically react with carbon dioxide, oxygen and water vapor. The unit mass of sample with CO in unit time 2 The mass loss of carbon after the reaction is a quantitative concept of coke reactivity. [0003] CO 2 Emission reduction is a major issue for iron and steel enterprises. In order to achieve a higher level of energy saving in the process, the blast furnace CO2 should be further reduced. 2 emissions. Makoto Naito of Japan proposed the technology of using high-reactivity coke to reduce t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B57/06
Inventor 梁英华孙章李鹏郭瑞
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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