Coking and coal blending method participated by gas coal with fluidity of no less than 1000 ddpm

A 1000ddpm, coking coal technology, applied in the field of coal chemical industry, can solve problems such as high actual value, unsuitable high fluidity of mixed coal, and influence on coke quality control, so as to reduce the cost of coal blending and save high-quality fat coal resources.

Active Publication Date: 2014-10-22
武汉钢铁有限公司
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, a new kind of gas coal with a maximum fluidity ≥ 1000ddpm has been newly mined. The volatile content of this gas coal is > 37.0%, and G > 80. Since the maximum fluidity of this gas coal is ≥ 1000ddpm, it has certain fluidity and is used in coal blending. Not as a coking center, it can be used together with other coking coals with a certain deg

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Coking and coal blending method participated by gas coal with fluidity of no less than 1000 ddpm
  • Coking and coal blending method participated by gas coal with fluidity of no less than 1000 ddpm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The cokes obtained in Examples 1-3 and Comparative Examples 1-2 were all produced in coke ovens over 6 meters long without using coal humidity control, briquette technology and pre-crushing technology. Comparative example 1 is compared with embodiment 1, and embodiment 1 gas coal is all gas coal 1#, and in comparative example 1 gas coal is all gas coal 2#, because gas coal 2# has no fluidity, after large-scale addition, The post-reaction thermal strength (CSR) of the coke obtained was 61%, which was significantly different from the thermal performance of Example 1, and the coke strength could not meet the requirements for use. Compared with Example 3 in Comparative Example 2, after replacing 6% fat coal with gas coal 1# in Example 3, the post-reaction thermal strength (CSR) of the coke obtained is equivalent to Comparative Example 2, and it can be seen that Gas Coal 1# has With a certain fluidity, it can partially replace fat coal in the coal blending structure to achie...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a coking and coal blending method participated by gas coal with fluidity of no less than 1000 ddpm. The method comprises a step of detecting each coking coal processing property index and a step of determining the weight percentage of each coke; it is eventually determined that the blending amount of gas coal with maximum fluidity of no less than 1000 ddpm, volatile compounds of greater than 37.0% and G of greater than 80 is 25 to 30%. According to the invention, the characteristics of maximum fluidity of no less than 1000 ddpm and certain fluidity of the gas coal No. 1 is fully utilized, specific 1/3 coking coal is selected in the process of coal blending and coking, and the gas coal can partially or totally replace fat coal, so the resource of high-quality fat coal is saved; since the coking isotropic structure and inertial structure of a single coal of the gas coal with such characteristics are low, influence on coke quality is small, and thus, coking coal with poor quality can be used.

Description

technical field [0001] The invention belongs to the technical field of coal chemical industry, and in particular relates to a coking coal blending method involving gas coal with a maximum fluidity ≥ 1000ddpm. Background technique [0002] According to the national standard GB5751-2009 "Classification of Coking Coal in China", gas coal can be divided into four grades of gas coal 34#, 43#, 44# and 45#, which are mainly distinguished by volatile matter and G value. When the volatile content is >28.0~37.0, and the G value is >50~65, it is gas coal 34#; when the volatile content is >37.0%, and the G value is >35, it is gas coal 43#, 44#, and 45# respectively. The coal quality of different grades of gas coal is quite different, and the distribution is also very different. At present, it is generally believed that gas coal has no fluidity, and is generally used as a coking center around which other coking coals coke. Therefore, in order to meet the coke quality require...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C10B57/04
Inventor 项茹陈鹏薛改凤任玉明宋子逵鲍俊芳詹立志张雪红陈细涛查海鑫
Owner 武汉钢铁有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap