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Measurement method and measurement device of coke reactivity

A measurement method and a technology of a measurement device, which are applied in the field of measurement and analysis of coke quality in the blast furnace ironmaking process, can solve the problems of large coke quantity and complicated process, etc.

Inactive Publication Date: 2010-05-19
SHANDONG IRON & STEEL CO LTD +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0010] In view of the disadvantages of using GB / T 4000-2008 to study coke reactivity in the prior art, the process is complicated, a large amount of coke is required, and the test process is greatly affected by human factors. The present invention provides a method and a measurement device for measuring coke reactivity

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  • Measurement method and measurement device of coke reactivity

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Embodiment Construction

[0013] Technical scheme of the present invention is described in detail as follows:

[0014] A coke reactivity determination method is to use a microcomputer differential thermal analyzer to determine the coke reaction start temperature, and the steps are as follows:

[0015] 1) Take 100-500g of sample coke, dry it in a drying oven at 105°C for 1 hour, and then crush it to 20-156μm;

[0016] 2) Take 30-200mg of crushed coke and put it into a crucible with an inner diameter of 1-4mm, a height of 1-6mm, and a material of 95wt% Al 2 o 3 ;

[0017] 3) Put the crucible in step 2) into the microcomputer differential thermal analyzer, raise the temperature at a heating rate of 5-30°C / min, and raise the temperature to 700-1100°C. During this heating process, pass N 2 Protect;

[0018] 4) When the temperature rises to 700~1100℃, stop N 2 , start to pass CO 2 , CO 2 The flow rate is controlled at 30-100mL / min, the heating rate is controlled at 1-10°C / min, and the reaction time is...

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Abstract

The invention provides a measurement method and a measurement device of coke reactivity. The measurement method comprises the following steps: firstly, crushing coke to 74-386mum, then putting into a purpose-made crucible, heating a heat balance at the heating rate of 5-30 DEG C / min to 700-1100 DEG C, introducing N2 for protection, introducing CO2 for reacting after reaching the designated temperature, heating continuously at the rate of 1-10 DEG C / min in the reaction process, making a weight-temperature chart after finishing the reaction to obtain a coke reaction beginning temperature (TS), and taking the coke reaction beginning temperature as a standard for measuring the quality of the coke reactivity. Compared with other methods for measuring the coke reactivity, the invention has simple operation, easy mastering, miniaturized test equipment, small occupied area and good safety, especially does not generate a large amount of toxic gases of CO and the like in the test process and can be widely suitable for factories, schools and scientific research academies.

Description

technical field [0001] The invention belongs to the technical field of coke chemical industry, and in particular relates to the measurement and analysis of coke quality in the blast furnace ironmaking process. Background technique [0002] At present, more than 90% of pig iron in my country is produced by blast furnace, and coke is an indispensable raw material in blast furnace production. Coke mainly plays the following three roles in the blast furnace: (1) Reductant; (2) Fuel; (3) Skeleton, of which the skeleton function is the most important, because it is the premise to ensure good air permeability and liquid permeability of the blast furnace Conditions, so far have not found an effective substitute that can play the same role. To measure the skeleton effect of coke, the method of measuring its reactivity and post-reaction strength is generally adopted, and the national standard GB / T 4000-2008 is usually adopted. The main steps are as follows: [0003] (1) Crushing and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04
Inventor 曾晖张建良李培言杨天钧周生华左海滨王延平
Owner SHANDONG IRON & STEEL CO LTD
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