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A method for producing sintered ore

A technology of sintering and sintering and returning ore, which is applied in the field of sintering and agglomeration, can solve the problems of high cost, increased dependence on iron ore resources, and insufficient recycling and utilization, and achieve the effect of low cost and reduced dependence

Active Publication Date: 2017-01-11
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Converter wet dedusting sludge, also known as OG sludge, has not been fully recycled and utilized as the waste of converter steelmaking in the prior art, and the raw materials used to produce sinter in the prior art are mostly iron ore. Mineral powder is sintered into agglomerates, which greatly increases the dependence on iron ore resources in the production of sintering ore. The cost is extremely high, and it does not have the characteristics of low cost.

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  • A method for producing sintered ore
  • A method for producing sintered ore
  • A method for producing sintered ore

Examples

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example 1

[0035] Material selection step; wet dust removal sludge composition: TFe% 56.58, FeO% 30.86, SiO 2 %1.83, Al 2 o 3 %0.66, Fe 2 o 3 % 27.12, CaO% 11.93, MgO% 3.9, MnO% 1.2, P 2 o 5 %0.1, S%0.078, metal Fe%13.59; dry dust removal ash composition: TFe%58.17, FeO%12.58, SiO 2 %2.01, Al 2 o 3 %0.099, Fe 2 o 3 %60.04, CaO%5.82, MgO%0.9, MnO%0.81, P 2 o 5 % 0.1, S% 0.048, metal Fe% 5.58; blast furnace gravity dust composition: TFe% 46.07, C% 23.05, CaO% 6.50, SiO 2 %6.01; Lime powder under sieve SiO 2 %0.70, S%0.004, MgO%0.72, CaO%85.00; coke powder Ad%12.65, Vdaf%1.30, St%0.79.

[0036] Batching steps; this example 1 uses all solid secondary resources, in which converter wet dedusting sludge accounts for 46% of all sintering raw materials, converter dry dedusting ash accounts for 20% of all sintering raw materials, and converter dedusting solid waste accounts for 66% of all sintering raw materials %, blast furnace gravity dedusting ash accounts for 10% of the total sin...

example 2

[0047] Material selection step; wet dust removal sludge composition: TFe% 60.97, FeO% 31.19, SiO 2 %1.98, Al 2 o 3 %1.74, Fe 2 o 3 % 30.06, CaO% 6.11, MgO% 2.28, MnO% 1.70, P 2 o 5 %0.128, S%0.078, metal Fe%15.67; dry dust removal ash composition: TFe%60.00, FeO%32.43, SiO 2 %1.70, Al 2 o 3 %0.132, Fe 2 o 3 % 25.01, CaO% 7.6, MgO% 0.79, MnO% 0.81, P 2 o 5 % 0.087, S% 0.037, metal Fe% 17.27; blast furnace gravity dust composition: TFe% 41.54, C% 24.12, CaO% 5.03, SiO 2 %6; sieved limestone powder SiO 2 % 1.08, S% 0.0038, MgO% 0.89, CaO% 47.58; coke powder Ad% 12.67, Vdaf% 1.25, St% 0.79.

[0048] Batching step: Example 2 of the present invention uses all solid secondary resources, wherein converter wet dedusting sludge accounts for 43% of the total sintering raw materials, converter dry dedusting ash accounts for 20% of the total sintering raw materials, and converter dedusting solid waste accounts for the proportion of all sintering raw materials 63%, blast furna...

example 3

[0058] Material selection step; wet dust removal sludge composition: TFe% 57.67, FeO% 33.19, SiO 2 %1.67, Al 2 o 3 %1.03, Fe 2 o 3 % 29.17, CaO% 11.57, MgO% 3.3, MnO% 1.6, P 2 o 5 % 0.11, S% 0.086, metal Fe% 8.03; components after dry dust removal: TFe% 59.28, FeO% 10.93, SiO 2 %2.05, Al 2 o 3 %1.03, Fe 2 o 3 %65.01, CaO%5.63, MgO%3.3, MnO%1.6, P 2 o 5 % 0.16, S% 0.078, metal Fe% 5.02; blast furnace gravity dust composition: TFe% 42.09, C% 21.85, CaO% 5, SiO 2 %6.17; lime powder SiO 2 %0.78, S%0.004, MgO%0.72, CaO%93.81; coke powder Ad%12.72, Vdaf%1.29, St%0.80.

[0059] Batching step: Example 3 of the present invention uses all solid secondary resources, wherein converter wet dedusting sludge accounts for 47% of the total sintering raw materials, converter dry dedusting ash accounts for 20% of the total sintering raw materials, and converter dedusting solid waste accounts for the proportion of all sintering raw materials 67%, blast furnace gravity dedusting ash ...

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Abstract

The invention discloses a method for producing a sintering ore. The method comprises the following steps of selecting a converter steel-making solid secondary resource, a fuel raw material and a sintering return ore as raw materials used for producing the sintering ore, wherein the converter steel-making solid secondary resource at least comprises the following raw materials: wet dust collection mud, dry dust collection ash, continuous casting cutting iron slag and a solvent raw material; mixing the wet dust collection mud, the dry dust collection ash, the continuous casting cutting iron slag, the solvent raw material and the fuel raw material to obtain a mixture P; sequentially carrying out distribution, ignition and sintering treatment on the mixture P to obtain a mixture Q; cooling the mixture Q, and carrying out screening treatment on the cooled mixture Q to obtain the sintering ore. The method disclosed by the invention realizes the secondary utilization of waste resources, greatly reduces the dependence on an iron ore resource due to no need of carrying out sintering agglomeration by using iron concentrate powder and has the characteristic of low cost.

Description

technical field [0001] The invention belongs to the technical field of sintering and agglomeration, in particular to a method for producing sintered ore. Background technique [0002] Converter wet dedusting sludge, also known as OG sludge, has not been fully recycled and utilized as the waste of converter steelmaking in the prior art, and the raw materials used to produce sinter in the prior art are mostly iron ore. The sintering of ore powder into agglomerates greatly increases the dependence on iron ore resources in the production of sintering ore, and the cost is extremely high, which does not have the characteristics of low cost. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for fully recycling and utilizing converter wet dedusting sludge to produce sinter; the method selects converter solid secondary resources including at least wet dedusting sludge and continuous casting cutting iron slag as pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/16
CPCC22B1/16
Inventor 于广泳陈斌裴元东冯军郭慧敏高攀郑志辉彭开玉姜仁波亢小敏王东刘宇
Owner SHOUGANG CORPORATION