Test device and test method for measuring aggregative permeability index of sinter bed

A technology of gas permeability and sintered material, which is applied in the direction of measuring device, permeability/surface area analysis, suspension and porous material analysis, etc., can solve the problem of lack of material layer, achieve high flexibility, reduce edge effect, and improve comparability sexual effect

Inactive Publication Date: 2010-03-17
SHOUGANG CORPORATION
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Problems solved by technology

However, as the main test method for sintering process research, the sintering cup test has always lacked an effective and accurate test device for measuring the gas permeability of the material layer.

Method used

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  • Test device and test method for measuring aggregative permeability index of sinter bed
  • Test device and test method for measuring aggregative permeability index of sinter bed
  • Test device and test method for measuring aggregative permeability index of sinter bed

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Embodiment Construction

[0033] figure 1 It is a specific embodiment of the present invention.

[0034] exist figure 1 In the process, put 10-15 grain grade sinter bottom layer into the main cup body 1, then put the granulated sinter mixture into the main cup body 1 and the auxiliary cup body 2 to the upper edge of the cup body, and put Smooth the material surface. Turn on the exhaust fan 10, open the air volume control program, and gradually increase the air volume from 0 to the set upper limit air volume through the mass flow sensor 8 and the exhaust fan inverter 10. During this process, the computer 11 passes the instrument 9, the pressure sensor 6 and the mass flow rate. The sensor 8 collects negative pressure and air volume data in real time, and calculates the air permeability index of each point through the air permeability index calculation formula. After the flow rate is increased to the set upper limit air volume, the comprehensive air permeability index is calculated according to the com...

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Abstract

A test device and a test method for measuring aggregative permeability index of a sinter bed belong to the technical field of measuring sinter. The device comprises a main cup, an assistant cup, an exhaust base, an exhaust fan with a frequency conversion instrument, a pressure sensor, a mass flow sensor and a meter. The test method comprises the steps of respectively filling the main cup with grate layer materials and sintered mixing materials, turning on the exhaust fan to start an air regulation process, measuring the permeability index of a material bed by the minute with a permeability index formula during the process of gradually increasing the exhausted air flow from 0 to a preset upper limit air flow, and calculating the aggregative permeability index of the material bed with an aggregative permeability index formula after turning off the exhaust fan when the exhausted air flow reaches the upper limit air flow. The invention has the advantages that the fringe effect of the material bed is decreased, the permeability of the sinter bed can be truly and exactly reflected, and the permeability of the sinter beds with different height can be measured with higher flexibility. Thedata from the whole test procedure is collected by the meter so the comparable property of the test result can be greatly promoted.

Description

technical field [0001] The invention belongs to the technical field of sintered material detection, in particular to a test device and test method for measuring the comprehensive air permeability index of a sintered material layer, which can continuously and automatically measure the air permeability index of a material layer within a certain flow range, and obtain accurate and representative Excellent air permeability of the material layer. Background technique [0002] The air permeability of the sintering material layer has a crucial impact on the entire sintering process. Too poor air permeability affects the vertical sintering speed and sintering utilization coefficient, and ultimately affects the sinter output; Short, unable to form enough sintering liquid phase, affecting the quality of sintering ore. Therefore, obtaining a suitable air permeability of the sintered material layer has become one of the important goals of optimizing the parameters of the sintering proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
Inventor 潘文赵志星赵勇赵霞秦岳义张勇徐萌刘文光张劲草朱俊红陈建军
Owner SHOUGANG CORPORATION
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