CN103045857A - Production method for sintering converter granulated slag to produce blast-furnace smelting sintered ore - Google Patents
Production method for sintering converter granulated slag to produce blast-furnace smelting sintered ore Download PDFInfo
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- CN103045857A CN103045857A CN2012105796545A CN201210579654A CN103045857A CN 103045857 A CN103045857 A CN 103045857A CN 2012105796545 A CN2012105796545 A CN 2012105796545A CN 201210579654 A CN201210579654 A CN 201210579654A CN 103045857 A CN103045857 A CN 103045857A
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- granulated slag
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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Abstract
The invention discloses a production method for sintering converter granulated slag to produce blast-furnace smelting sintered ore. The production method is characterized by comprising the following steps: exposing converter granulated slag to high-pressure water to produce granulated slag with particle size of less than 5 mm, performing magnetic separation and then piling; thoroughly mixing one or two or more than two of ores (such as magnetite ore, hematite ore and limonite ore) to obtain an ingredient A with iron grade of 58% to 64% and water content of 4% to 8%; thoroughly mixing the granulated slag and the ingredient A accounting for 1-2% by weight to obtain a neutral mixture; and feeding the neutral mixture to a sintering machine for sintering production. The method has the advantages of preventing environmental pollution caused by converter granulated slag and secondary transport pollution of steel slag, and eliminating the impact on the sintering process because the granulated slag has a low TFe content, contains GaO and MgO and has a high content of harmful impurities S and P by optimizing the mixing proportion. The method can reduce the annual cost of the system, reduce the consumption cost of iron ore powders and fluxing agents and improve the air permeability of the sintered mixture by the uniformity of the granulated slag with particle size of less than 5 mm, and can increase the yield.
Description
Technical field
The production method that relates to a kind of blast furnace sinter ore deposit of the present invention particularly relates to a kind of production method that the converter grain slag is sintered into the blast-furnace smelting agglomerate.
Background technology
Converter grain slag ferrous grade contains GaO(45%-48% about 18%), MgO(8%-13%) etc., its comprehensive composition is seen accompanying drawing 1.
At present domestic on the converter grain slag process because of can't solve in the adapted grain slag TFe low, contain GaO, MgO and the higher impact on sintering process of detrimental impurity S, P, the way commonly used of employing is to pave or sell private enterprise's making cement outward as waste to process raw material.These methods not only cause the waste of resource, and processing costs is high, water resource waste is large, and result of use is bad.
Summary of the invention
Purpose of the present invention just provides a kind of when utilizing the converter grain slag can reduce powdered iron ore to consume; use owing to containing the higher part flux that replaces of GaO, MgO, reach the production method that the converter grain slag is sintered into the blast-furnace smelting agglomerate of the purpose that turns waste into wealth.
Solution of the present invention is such:
The present invention includes step:
(1), bessemer furnace slag is processed into granularity less than 5 ㎜ grain slags with high pressure water impact, stack after the magnetic separation;
(2), one or any two kinds or the two or more mineral of magnetite, rhombohedral iron ore or limonite are carried out mixing dosage, obtain ferrous grade in the A of 50%～67% moisture 4%～8% batching;
(3), grain slag is accounted for mass ratio 1%-2% and A the batching be mixed into ferrous grade reach 58%～64% in and the mixing material;
(4), will in and the mixing material deliver to sinter machine production, produce barrate strength greater than 60%, size composition ferrous grade and detrimental impurity in 5mm～40mm and chemical composition all satisfy the agglomerate of blast-furnace smelting.
Advantage of the present invention is:
1, this technology solved the environmental pollution of converter grain slag and the transhipment of slag secondary pollute and be optimized join the ore deposit solve grain slag TFe low, contain GaO, MgO and the higher impact on sintering process of detrimental impurity S, P; Annual about 1,000,000 yuan of the costs of saving of the utilization of this system.
2, reduced powdered iron ore and flux consuming cost after the use: willow steel converter grain slag has 120,000 tons * 150 yuan/tons=1,800 ten thousand yuan every year.
3, the granularity of utilizing grain slag has improved the ventilation property of sinter mixture less than 5 ㎜ homogeneities, can increase production approximately 0.5%.
Description of drawings
Accompanying drawing 1 is Liu Gang grain slag main chemical compositions table.
Accompanying drawing 2 is production method block diagrams of the present invention.
Embodiment
The present embodiment is that employing willow steel converter grain slag is example explanation the present invention around forming the blast-furnace smelting agglomerate.
Willow smelting steel agglomerate main chemical compositions such as accompanying drawing 1,
(1), set up the grain slag pond, bessemer furnace slag is processed into granularity less than 5 ㎜ grain slags with high pressure water impact, collect by screw machine after the magnetic separation and in heapsly be transported to the powdered iron ore stock ground with belt or automobile and stack afterwards;
(2), one or any two kinds or the two or more mineral of magnetite, rhombohedral iron ore or limonite are carried out mixing dosage, obtain ferrous grade in the A of 50%～67% moisture 4%～8% batching;
(3), grain slag is accounted for mass ratio 1%-2% and A the batching be mixed into ferrous grade reach 58%～64% in and the mixing material;
(4), will in and the mixing material deliver to sinter machine production, produce barrate strength greater than 60%, size composition ferrous grade and detrimental impurity in 5mm～40mm and chemical composition all satisfy the agglomerate of blast-furnace smelting.
Need in the adapted by be optimized join the ore deposit solve grain slag TFe low, contain GaO, MgO and the higher impact on sintering process of detrimental impurity S, P.
Specific embodiments of the invention are as follows:
Claims (1)
1. production method that the converter grain slag is sintered into the blast-furnace smelting agglomerate is characterized in that: comprise step:
(1), bessemer furnace slag is processed into granularity less than 5 ㎜ grain slags with high pressure water impact, stack after the magnetic separation;
(2), one or any two kinds or the two or more mineral of magnetite, rhombohedral iron ore or limonite are carried out mixing dosage, obtain ferrous grade in the A of 50%～67% moisture 4%～8% batching;
(3), grain slag is accounted for mass ratio 1%-2% and A the batching be mixed into ferrous grade reach 58%～64% in and the mixing material;
(4), will in and the mixing material deliver to sinter machine production, produce barrate strength greater than 60%, size composition ferrous grade and detrimental impurity in 5mm～40mm and chemical composition all satisfy the agglomerate of blast-furnace smelting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210579654.5A CN103045857B (en) | 2012-12-28 | 2012-12-28 | Production method for sintering converter granulated slag to produce blast-furnace smelting sintered ore |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210579654.5A CN103045857B (en) | 2012-12-28 | 2012-12-28 | Production method for sintering converter granulated slag to produce blast-furnace smelting sintered ore |
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| CN103045857A true CN103045857A (en) | 2013-04-17 |
| CN103045857B CN103045857B (en) | 2014-12-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107385203A (en) * | 2017-08-25 | 2017-11-24 | 鞍钢股份有限公司 | A kind of method for preparing sintering deposit using hot vessel slag for Binder Phase |
| CN112063835A (en) * | 2020-08-27 | 2020-12-11 | 包头钢铁（集团）有限责任公司 | Method for treating iron-containing solid waste by using sintering process |
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2012
- 2012-12-28 CN CN201210579654.5A patent/CN103045857B/en active Active
Non-Patent Citations (3)
| Title |
|---|
| 于原浩等: "改善烧结矿质量降低高炉炼铁燃耗", 《钢铁》 * |
| 宁新周等: "国内钢渣处理和应用方式的调查分析", 《冶金环境保护》 * |
| 林东等: "转炉钢渣处理技术的开发和应用", 《炼钢》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107385203A (en) * | 2017-08-25 | 2017-11-24 | 鞍钢股份有限公司 | A kind of method for preparing sintering deposit using hot vessel slag for Binder Phase |
| CN112063835A (en) * | 2020-08-27 | 2020-12-11 | 包头钢铁（集团）有限责任公司 | Method for treating iron-containing solid waste by using sintering process |
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| CN103045857B (en) | 2014-12-31 |
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