Combustion measurement device used for blowing assisted sintering method and combustion measurement method used for blowing assisted sintering method

Abstract

The invention provides a combustion measurement device. A gas concentration detection device is additionally arranged between a sintering machine trolley and an auxiliary combustion device. The gas concentration detection device comprises a driving device, a traction part and a concentration detector. The invention also provides a combustion measurement method using the device. According to the device and the method, the thickness of the combustion zone can be accurately controlled and the quality improvement effect can be optimized so that the corresponding defects existing in the prior art can be effectively solved, the production safety factor and the quality improvement effect can be enhanced and the objectives of stable, smooth and high-yield production of the whole production line can be achieved.

Description

technical field [0001] The invention relates to a combustion measurement device and a measurement method for an injection-assisted sintering method, belonging to the field of sintering. Background technique [0002] The sintering process is a key link in the ironmaking process. Its principle is to mix various powdery iron-containing raw materials with an appropriate amount of fuel and flux, add an appropriate amount of water, mix and pelletize the material on the sintering equipment to make the material A series of physical and chemical changes, sintered into blocks, which are sent to the blast furnace for the next step. [0003] In order to reduce the coke ratio and smelting cost of blast furnace ironmaking, blast furnaces often require high strength and high reducibility for sinter. In the sintering process, the sintered ore is generally required to have high strength, high yield, low return rate, and low fuel consumption. High-strength and highly reducing sinter consume...

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Problems solved by technology

[0005] However, the injection-assisted sintering method in the prior art has the following defects due to the lack of an effective gas combustion position soft measurement method:

[0006] 1) The thickness of the combustion zone cannot be accurately controlled: during sintering, the thickness of the combustion zone is related to the resistance of the material layer, which affects the difficulty of air suction on the material surface, and then affects the entire sintering process

If the real-time combustion position of the gas during production cannot be accurately detected, the thickness of the thickened combustion zone will not be known. In severe cases, it will cause positive pressure on the material surface, resulting in gas being unable to pump down, and escaping to the surrounding and upper parts of the sintering machine, causing security incident

[0007] 2) Unable to optimize the quality improvement effect: One of the technical effects of the injection-assisted sintering method is to improve the quality of the sintered finished ore, and the principle of realization is to shorten the unreasonable temperature range above 1400°C in the original sinter It is converted into a reasonable temperature range of 1200-1400°C

If the real-time gas combustion position in production cannot be accurately detected, the optimal distribution of the control temperature range will not be achieved, and the purpose of converting the unreasonable temperature range into a reasonable temperature range will not be achieved.

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