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Method for detecting thermal pulverization performance of coke

A technology for coke and pulverization, which is used in the detection of coke performance and the thermal pulverization performance of coke, can solve problems such as the influence of air permeability and the inability to detect the thermal pulverization performance of coke, so as to improve air permeability and reduce coke powder. the effect of

Inactive Publication Date: 2019-04-09
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] The purpose of the present invention is to provide a method for detecting the thermal pulverization performance of coke, which mainly solves the technical problem that the thermal pulverization performance of coke cannot be detected in the prior art. The method of the present invention is used to evaluate the pulverization performance of coke in the lower part of the blast furnace , by measuring the pulverization index of coke to characterize the influence of pulverization of coke in the lower part of the blast furnace on the air permeability of the blast furnace

Method used

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Examples

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Embodiment 1

[0030] Embodiment 1, a method for detecting the thermal pulverization performance of coke, the method comprises the following steps:

[0031] 1) prepare coke samples, select 5 kinds of cokes that a steel company uses as test samples, and control the particle diameter of coke samples to be 23-25mm;

[0032] 2) Dry the coke sample, put the coke sample in an oven, dry it at 110°C for 2.0h, take out the coke sample, cool it to 25°C and seal it for later use;

[0033] 3) Carry out the reactivity test of the coke sample, place 200g of the dried coke sample in the coke reactivity test device; heat the coke from 25°C to 1100°C at a heating rate of 5°C / min, and react to the coke N 2 , the coke was kept at 1100°C for 2 hours, and CO 2 ; Control the computer to collect and save time, atmosphere and coke weight loss data;

[0034] 4) Sieve the coke after cooling, and weigh the coke with a particle size 1 ;

[0035] 5) Place the sieved coke with a particle size ≥ 10 mm in a type I drum...

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Abstract

The invention discloses a method for detecting thermal pulverization performance of coke, and mainly solves the technical problem that the thermal pulverization performance of the coke cannot be detected in the prior art. The method for detecting the thermal pulverization performance of the coke comprises the following steps of: 1) preparing a coke sample; 2) drying the coke sample; 3) performingreactivity testing for the coke sample; 4) sieving the coke after the coke is cooled and weighing the sieved coke having a particle size of <10 mm to obtain m<1>; 5) placing the sieved coke having a particle size of >=10mm in a type I drum for 400-800 turns, taking out the coke, and weighing the coke having a particle size of <10mm to obtain m<2>; 6) calculating the pulverization index CPR of thecoke after reaction. According to the method for detecting the thermal pulverization performance of the coke, the pulverization condition of coke after the blast furnace violent reaction can be evaluated better.

Description

technical field [0001] The invention relates to a method for detecting coke performance, in particular to a method for detecting coke thermal pulverization performance, which is used for evaluating the pulverization performance of coke in the lower part of a blast furnace, and belongs to the field of coke quality detection. 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. The pulver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/02
CPCG01N25/02
Inventor 张文成郑明东张小勇
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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