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Device and method for testing high-temperature strength of ironmaking raw material

A technology of iron-making raw materials and testing equipment, which is applied in the direction of measuring equipment, strength characteristics, and the use of stable tension/pressure to test the strength of materials, etc., can solve the problems of weak guidance, high-temperature strength cannot be measured online at high temperature, etc., and achieve testing Wide-ranging, wide-ranging effects

Pending Publication Date: 2022-01-11
NORTHEASTERN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem in the prior art that the high-temperature strength of the ironmaking charge cannot be measured on-line at high temperature, and the guiding effect on production is not strong, the present invention provides a device and method for testing the high-temperature strength of the ironmaking raw material

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  • Device and method for testing high-temperature strength of ironmaking raw material
  • Device and method for testing high-temperature strength of ironmaking raw material
  • Device and method for testing high-temperature strength of ironmaking raw material

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Embodiment 1

[0065] Such as figure 1 As shown, the present embodiment provides a high-temperature strength test device for ironmaking raw materials, including:

[0066] The heating assembly is used for heating the ironmaking raw material 3 to a certain temperature. The heating assembly in this embodiment can heat the ironmaking raw material 3 to 400-1800° C. to simulate the temperature required in different reduction processes.

[0067] The gas control component 4 is connected with the heating component, and feeds the reducing gas and / or protective gas required by the ironmaking raw material 3 in the ironmaking process into the heating component, so as to simulate different atmospheres in the ironmaking process.

[0068] The compressive strength detection component is partially arranged inside the heating component, and can apply pressure to the ironmaking raw material 3 to detect the compressive strength of the ironmaking raw material 3 in the heating component under a certain temperatur...

Embodiment 2

[0090] This embodiment provides a method for testing the high-temperature strength of ironmaking raw materials using the testing device of Embodiment 1, comprising the steps of:

[0091] S1: Put the ironmaking raw material 3 into the furnace tube 16 and place it on the refractory grid plate 11 . Turn on the data processing system, start the gas control unit, control the ratio and flow rate of the reducing gas and / or protective gas as required, feed the mixed gas into the furnace tube 16, and then raise the ironmaking raw material 3 to a certain temperature.

[0092] S2: When the temperature of the iron-making raw material 3 rises to the set temperature, start the compressive strength detection component, the pressing rod 6 and the pressing plate 2 move down, crush the iron-making raw material, and detect the strength of the iron-making raw material under the corresponding temperature and atmosphere. High temperature compressive strength.

[0093] Preferably, after step S1, th...

Embodiment 3

[0103] In this embodiment, carbon-containing pellets with different carbon contents are used as ironmaking raw materials, and the test method of Example 2 is used to test its high-temperature compressive strength. The specific steps are as follows:

[0104] Put the carbon-containing pellets on the top of the inner grid plate 11, turn on the data processing component, start the gas control component, the gas in the gas cylinder 41 is continuously passed into the furnace tube 16 after being uniformly mixed, and the mixed gas is in a volume ratio of : 20% H 2 , 30% CO, and 50% CO 2 , the mixed gas passes through the high alumina ball 12 and the grid plate 11 at 10L / min and mixes evenly, and then passes into the furnace body. After the ventilation is over, turn on the cooling water, start the heating element 10 to start heating up, control the heating rate to 6°C / min, and use the thermocouple 13 to reflect the temperature in the furnace tube 16 in real time, and raise the tempera...

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Abstract

The invention relates to a device and method for testing the high-temperature strength of an ironmaking raw material. The testing device comprises: a heating assembly which is used for heating an ironmaking raw material to a certain temperature; a gas control assembly which is connected with the heating assembly, wherein reducing gas and / or protective gas required by ironmaking are / is introduced into the heating assembly; a compressive strength detection assembly which is partially arranged in the heating assembly and applies pressure to the ironmaking raw materials to detect the compressive strength of the ironmaking raw materials at a certain temperature and atmosphere; and a data processing component which is respectively in communication connection with the components. According to the testing device, a real temperature environment in an ironmaking process is simulated through the heating assembly, a real atmosphere environment in the ironmaking process is simulated through the gas control assembly, and then the compressive strength of an ironmaking raw material is tested through the compressive strength testing assembly under the real ironmaking temperature and atmosphere environment; the high-temperature strength quality condition of the ironmaking raw material can be truly and objectively reflected, and an instant detection device is provided for high-temperature strength performance characterization of the ironmaking raw material.

Description

technical field [0001] The invention belongs to the technical field of raw material performance testing in the metallurgical process, and in particular relates to a device and method for testing the high-temperature strength of ironmaking raw materials. Background technique [0002] The iron and steel industry is an important basic industry of the national economy. Steel is known as "industrial food" and is a necessary material in many industries and other fields. As one of the basic industries of the national economy, steel is irreplaceable in many fields, and the development level of the steel industry is also one of the important symbols to measure the comprehensive national strength of a country. For the ironmaking process in the iron and steel manufacturing process, whether it is the blast furnace ironmaking process, or the direct reduction and smelting reduction process, the ironmaking raw materials must use certain specifications of bulk furnace materials, mainly incl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/18G01N3/02
CPCG01N3/18G01N3/02G01N2203/0019G01N2203/005G01N2203/0226
Inventor 吕炜储满生鲍继伟柳政根唐珏冯聪
Owner NORTHEASTERN UNIV
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