Test method for blast furnace coke reactivity

A test method and technology of blast furnace coke, which are applied in the direction of removing certain components and weighing, etc., to achieve the effect of saving the amount of coke consumed in the test and saving energy

Active Publication Date: 2014-07-23
UNIV OF SCI & TECH BEIJING
View PDF5 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the deepening of research, these two indicator

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
  • Test method for blast furnace coke reactivity
  • Test method for blast furnace coke reactivity
  • Test method for blast furnace coke reactivity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The present invention will be further described below by specific examples.

[0033] Select 6 kinds of cokes used by a certain iron and steel company as test samples, pass through a 200 mesh sieve after being ground, and get the powder under the sieve for subsequent use;

[0034] Put the spare powder in an oven, dry it at 105~120°C for 2 hours, take it out, cool it to room temperature and seal it for later use;

[0035] The test device chooses a microcomputer differential thermal balance manufactured by a company in Beijing;

[0036] Weigh 17 mg of each of the 6 spare coke samples, place them in a differential thermal balance in sequence, and continuously raise the temperature at a heating rate of 20°C / min, and at the same time pass the reaction gas CO 2 , the gas flow rate is controlled at 60ml / min;

[0037] The set heating range is from room temperature to 1200°C;

[0038] After reaching the heating end point, the computer data collection is completed, and the coll...

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 provides a test method for blast furnace coke reactivity. According to the method, conventional equipment is utilized, by obtaining the weight loss rate variation of coke at different temperature and the initial temperature of the carbon solution loss reaction of coke, the reactivity of coke is characterized. The method comprises: grinding a selected to-be tested coke sample into fine powder, drying, taking out the coke sample, cooling to room temperature, sealing for usage; weighing the coke sample for usage, putting in a test apparatus, continuously raising the temperature, introducing a reaction gas CO2, when the heating terminal point is reached, finishing computer data acquisition, and storing the acquisition data; finally processing the data acquired by a computer; and finally characterizing the reactivity of coke by obtaining the weight loss rate variation of coke at different temperature and the initial temperature of the carbon solution loss reaction of coke. According to the method, test equipment such as a thermo gravimetric analyzer and the like are employed, the reaction situation of coke with CO2 at different temperature can be comprehensively analyzed, and true objective evaluation on the reactivity of cokes with different quality can be made.

Description

technical field [0001] The invention relates to a new method for testing the reactivity of blast furnace coke, which can also measure the reactivity of carbon-containing substances in other ironmaking raw materials, and belongs to the field of blast furnace ironmaking. Background technique [0002] Coke plays four roles in the blast furnace: heat source, reducing agent, skeleton and molten iron carburization. In recent years, in order to reduce coke consumption, increase blast furnace output, and improve pig iron quality, enhanced technologies such as blowing coal powder at the tuyere and oxygen-enriched air blast have been adopted. Coke as a heat source, reducing agent and carburizing can be Partially replaced, but the role of the loose skeleton as a blast furnace column cannot be replaced, and with the enlargement of the blast furnace and the strengthening of smelting, this role will become more prominent. [0003] The reactivity of coke (CRI) refers to the coke's reactio...

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): G01N5/04
Inventor 张建良柴轶凡宁晓钧祁成林高冰李峰光郑常乐于文涛卫广运
Owner UNIV OF SCI & TECH BEIJING
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