Unlock instant, AI-driven research and patent intelligence for your innovation.

Determination method for coke high-temperature properties

A measurement method and high-temperature performance technology, applied in the direction of applying stable tension/pressure to test the strength of materials, measuring devices, instruments, etc., can solve the problem of low test flexibility

Active Publication Date: 2014-01-15
BAOSHAN IRON & STEEL CO LTD
View PDF4 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the research in this aspect, the method is mainly to take coke samples in the tuyere area and compare the optical structure, ash composition, and strength of the coke samples in the furnace. Due to the limitation of blast furnace production, the test flexibility is very low

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Prepare a coke sample C1 with a particle size of 19-21 mm, put it into a heating furnace for heating, record the weight w1 of the coke sample into the furnace as 200 g, and adopt segmental heating during the heating process, and the heating rate between room temperature and 300 °C is 15 °C / min; The heating rate in the interval from 300°C to 800°C is 12°C / min; the heating rate from 800°C to the final temperature is 10°C / min, and the final temperature is 1600°C. After heating to the final temperature, keep the constant temperature for 2 hours. During the heating process The coke samples were protected by nitrogen gas. Then the heated coke sample was cooled to room temperature and taken out, weighed and recorded, and the furnace weight w2 was 181g. Put the coke sample cooled to room temperature into a type I drum at 20 rpm for 30 minutes, and then weigh the coke with a particle size below 10mm, w3, to be 36g.

Embodiment 2

[0028] Prepare a coke sample C1 with a particle size of 19-21 mm, put it into a heating furnace for heating, record the weight w1 of the coke sample into the furnace as 200 g, and adopt segmental heating during the heating process, and the heating rate in the range from room temperature to 300 °C is 20 °C / min; The heating rate in the interval from 300°C to 800°C is 10°C / min; the heating rate from 800°C to the final temperature is 8°C / min, and the final temperature is 1500°C. After heating to the final temperature, keep the constant temperature for 2 hours. During the heating process The coke samples were protected by nitrogen gas. Then the heated coke sample was cooled to room temperature and taken out, weighed and recorded, and the furnace weight w2 was 178g. Put the coke sample cooled to room temperature into a type I drum at 20 rpm for 30 minutes, then weigh the coke with a particle size below 10mm w3 to be 32g.

Embodiment 3

[0030] Prepare a coke sample C1 with a particle size of 19-21 mm, put it into a heating furnace for heating, record the weight w1 of the coke sample into the furnace as 200 g, and adopt segmental heating during the heating process, and the heating rate between room temperature and 300 °C is 18 °C / min; The heating rate in the interval from 300°C to 800°C is 15°C / min; the heating rate from 800°C to the final temperature is 9°C / min, and the final temperature is 1400°C. After heating to the final temperature, keep the constant temperature for 2 hours. During the heating process The coke samples were protected by nitrogen gas. Then the heated coke sample was cooled to room temperature and taken out, weighed and recorded, and the furnace weight w2 was 184g. Put the coke sample cooled to room temperature into a type I drum at 20 rpm for 30 minutes, and then weigh the coke with a particle size below 10mm, w3, to be 28g.

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a determination method for coke high-temperature properties. The method comprises the following steps: step one, preparing coke samples with the particle size of 19-21 mm; step two, carrying out high temperature treatment of the coke samples, wherein the high temperature treatment process comprises the steps of putting the coke samples in a heating furnace for heating, weighing and recording a weight w1 of the coke samples putted into the furnace, heating to a final temperature, and then keeping the constant temperature for 2 hours; step three, cooling the coke samples after high temperature treatment in the step two in the heating furnace, cooling to the room temperature, then taking out, weighing, and recording a weight w2 of the coke samples taken out the furnace; step four, putting the coke samples cooled to the room temperature in the step three in an I-type rotating drum, rotating at a speed of 20 rpm for 30 minutes, then taking out coke with the particle size of below 10 mm, weighing, and recording a weight w3; and step five, calculating the coke sample weight loss rate La and the strength Sht of the coke samples after reaction. Through the method, more in-depth evaluation of good and bad of the coke heat properties can be carried out.

Description

technical field [0001] The invention relates to a method for measuring the high-temperature performance of metallurgical coke, in particular to a method for measuring the influence of ash content on the high-temperature performance of coke. Background technique [0002] At present, it is believed that the main factors affecting the high temperature performance of metallurgical coke are the optical structure of the coke matrix, the coke pore structure, and the ash composition of the coke, which affect the reactivity of the coke at high temperature, so the above three factors determine the coke Strength at high temperature in blast furnace. [0003] The essence of the pulverization of coke in the lower part of the blast furnace is that the coke itself changes at high temperature and undergoes various physical and chemical effects in the blast furnace environment, so that the coke micro-cracks expand and the volume is destroyed, so that it is pulverized under the action of the ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/00G01N3/18
Inventor 胡德生孙维周朱亚平
Owner BAOSHAN IRON & STEEL CO LTD