Sintering method capable of improving sintering desulfurization rate

A sintering method and desulfurization rate technology, applied in the sintering field, can solve the problems of high sintering cost, high blast furnace sulfur load, and high fuel consumption, and achieve the effects of reducing the amount of coke used, improving the sintering desulfurization rate, and optimizing the sintering process.

Inactive Publication Date: 2016-12-21
YUNNAN DESHENG STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] my country's sintering flue gas desulfurization started relatively late, and the selected desulfurization process and engineering projects cannot completely and effectively target the characteristics of sintering flue gas. There are not many successful cases of sintering flue gas desulfurization in China, and there are few similar projects that can be used for reference.
[0004] At present, many sintering plants have been facing problems such as low desulfurization efficiency in the sintering process and high sulfur content in the sintered ore, resulting in high sulfur load in the blast furnace and increased coke ratio, resulting in high fuel consumption and high sintering costs in the entire sintering process

Method used

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Examples

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Embodiment 1

[0026] A sintering method for improving the sintering desulfurization rate and reducing fuel consumption, including four steps of batching, pelletizing, spreading and sintering;

[0027] (1) Ingredients: the raw material is vanadium-titanite powder with a particle size of 2 to 10 mm, wherein the weight of the vanadium-titanite powder with a particle size of 2 to 5 mm is 75% of the total iron ore powder weight;

[0028] The fuel is a mixture of coke powder and anthracite, wherein the total weight of coke powder is 40% of the total weight of the fuel, and the total weight of anthracite is 60% of the total weight of the fuel, and the mass percentage of each component selected for the anthracite is fixed carbon ≥ 69% %, S ≤ 1%, ash ≤ 20%, volatile content ≤ 10%, and anthracite particle size ≤ 3mm is 98% of the total anthracite mass.

[0029] The flux is a mixture of quicklime, hydrated lime, limestone and dolomite. The quality requirements of the selected quicklime are: CaO≥78% in...

Embodiment 2

[0035] A sintering method for improving the sintering desulfurization rate and reducing fuel consumption, including four steps of batching, pelletizing, spreading and sintering;

[0036] (1) Ingredients: the raw material is vanadium-titanite powder with a particle size of 2 to 10 mm, wherein the weight of the vanadium-titanite powder with a particle size of 2 to 5 mm is 75% of the total iron ore powder weight;

[0037] The fuel is a mixture of coke powder and anthracite, wherein the total weight of coke powder is 40% of the total weight of the fuel, and the total weight of anthracite is 60% of the total weight of the fuel, and the mass percentage of each component selected for the anthracite is fixed carbon ≥ 69% %, S ≤ 1%, ash ≤ 20%, volatile matter ≤ 10%, and anthracite particle size ≤ 3mm is 95% of the total anthracite mass.

[0038] The flux is a mixture of quicklime, hydrated lime, limestone and dolomite. The quality requirements of the selected quicklime are: CaO≥78% in ...

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Abstract

The invention discloses a sintering method capable of improving sintering desulfurization rate. The sintering method capable of improving the sintering desulfurization rate is characterized by comprising the following steps: mixing iron ore powder with the granularity of 2 to 10 mm, a certain proportion of fuel and a quick lime-containing flux in a certain proportion to form a sintering material; paving a grate-layer material on a sintering machine, and then uniformly paving the sintering material on the grate-layer material, wherein the thickness of the sintering material is 700 to 800 mm; finally, igniting and sintering, wherein the igniting temperature is 1,000 to 1,200 DEG C. The sintering desulfurization rate can be improved, and meanwhile, the using amount of coke and the cost of raw ore powder are reduced by sintering by the sintering method; the overall resources are saved; the production cost is reduced; obvious economic benefit is brought to a sintering plant.

Description

technical field [0001] The invention relates to a sintering method, in particular to a sintering method for improving the sintering desulfurization rate. Background technique [0002] 90% of the sulfur dioxide discharged into the atmosphere by iron and steel enterprises comes from sintering plants. Therefore, reducing sulfur dioxide emissions from sintering plants is the top priority of environmental governance for iron and steel enterprises. Accelerating the implementation of sintering desulfurization is an important issue that urgently needs to be resolved in the environmental governance of the iron and steel industry. [0003] my country's sintering flue gas desulfurization started relatively late, and the selected desulfurization process and construction projects cannot completely and effectively target the characteristics of sintering flue gas. There are not many successful cases of sintering flue gas desulfurization in China, and there are few similar projects that can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/16
CPCC22B1/16
Inventor 袁祖全邢文杰韩志云钱敏
Owner YUNNAN DESHENG STEEL CO LTD
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