CN102586516B - Method for preparing slag conglomeration agent for iron steel - Google Patents
Method for preparing slag conglomeration agent for iron steel Download PDFInfo
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- CN102586516B CN102586516B CN2012100896617A CN201210089661A CN102586516B CN 102586516 B CN102586516 B CN 102586516B CN 2012100896617 A CN2012100896617 A CN 2012100896617A CN 201210089661 A CN201210089661 A CN 201210089661A CN 102586516 B CN102586516 B CN 102586516B
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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
Abstract
The invention relates to a method for preparing a slag conglomeration agent for molten iron steel, in particular to a method for preparing a slag conglomeration agent for iron steel. The method comprises the following steps: (1) crushing 15 to 20 percent by weight of albite, 20 to 25 percent by weight of fluorite, 10 to 15 percent by weight of raw vermiculite, 10 to 15 percent by weight of calcium carbonate and 20 to 30 percent by weight of waste glass; (2) pulverizing with the particle size of 0.1 to 3.0 mm; (3) batching, that is, mixing the materials; (4) milling, wherein 1 to 5 percent of common salt is added for milling, the milling temperature is 20 to 30 DEG C, and the milling time is 10 to 30 min; and (5) detecting and packaging. Through the adoption of the slag conglomeration agent for iron steel, which is prepared according to the method, easy slag collection and slag discharge are realized, deslagging iron loss is reduced fundamentally, and the basicity and the melting temperature of furnace slag are reduced so as to improve the fluidity of desulphurized iron slag.
Description
Technical field
The present invention relates to the preparation method of the poly-slag agent of a kind of iron and steel solution.
Background technology
Along with the fast development of domestic economy and society, China has become world steel the first big producing country.Market is rapid to the demand growth of high-quality steel products, makes domestic steel industry keep continuously and healthily development over past ten years always, and the scale of iron and steel manufacturing concern constantly enlarges, and a series of metallurgical new technologies, novel process obtain promotion and application widely.But in general, China's steel industry is compared with some iron and steel in the world poweies, its production technique, equipment and state of the art relatively backward, make domestic steel product compare with external advanced iron and steel manufacturing nation on product structure, performance and kind, there is a certain distance, on the one hand the iron and steel production capacity of common quality is the first according to the world, on the other hand some high variety steels dependence on import also.The particularly important is due to production technique, equipment and managerial relatively backward, make the production material consumption of domestic iron and steel, energy consumption technical indicator have very large gap, cause the products production cost high.
(or molten iron enter hot metal mixer or converter before) makes of rice-straw ash or asbestos plaster always that molten iron covers, the collection residue material when molten iron is poured into a mould such as domestic many iron and steel manufacturing concerns (smelting, casting, cast tube etc.),, tectum little due to coverage rate fails to play enough heat insulation effects, and slag easily pours into casting mold with molten iron.Not only in the operation, dust fills the air, contaminate environment, and cause that the iron loss of skimming is large, the difficult problem of skimming, according to incompletely statistics, adopting the slag of traditional collection slag technique to wrap up in iron loss is 5.1～5.7 kg/t iron (and external advanced iron and steel enterprise is 0.75～1.25 kg/t iron in the general iron loss of this link).
Therefore, in recent years, China's Desulphuring Process of Molten Iron was applied in relevant iron and steel enterprise just rapidly, but still the problem of the iron loss of skimming after the ubiquity desulfurization large (it is 4.958 kg/t iron that the mixed CaO+Mg of the blowing sulfur removal technology slag that usually adopts is wrapped up in iron loss), the difficulty of skimming.For example, Steelworks, Laiwu Iron ﹠. Steel Corp., Ltd. moves molten iron pre-desulfurization technique since in December, 2003, and from production practice, there are the problems such as basicity is high, poor fluidity equally in the scum after processing, and slag is loose and broken, can not form slag system.Thereby cause slag-removing time long, and in the process of skimming, a large amount of molten iron are along with slag runs off, and the molten iron loss is serious, directly has influence on output and iron and steel stock consumption indicators.Therefore, develop novel efficient poly-slag agent, by reasonable adjustment scum basicity, scum viscosity after the change desulfurization reduces all iron content in slag, to reduce iron loss, is a staple product of encouraging in domestic metallurgy industry development program always.
Summary of the invention
In order to change scum viscosity after desulfurization, reduce all iron content in slag, to reduce iron loss; The preparation method who the purpose of this invention is to provide a kind of slag conglomeration agent for iron steel, after adding the poly-slag agent of the method preparation, the desulfurization slag melting point depression, mobility is improved, slagging effective (slag is large bulk), skim easily, skim clean, effectively reduce the molten iron loss that causes by skimming, realize energy-efficient.
In order to realize above-mentioned purpose, the present invention has adopted following technical scheme:
A kind of preparation method of slag conglomeration agent for iron steel, the method comprises the following steps:
1) by weight percentage with albite 15% ~ 20%, fluorite 20% ~ 25%, fabric and raw-vermiculite 10% ~ 15%, calcium carbonate 10% ~ 15% and cullet 20% ~ 30% fragmentation;
2) pulverize, the granularity of pulverizing is 0.1～3.0mm;
3) batching is with above-mentioned mixing of materials;
4) mixing, add salt 1% ~ 5% mixing, melting temperature is 20 ~ 30 ℃, the time is 10 ~ 30min;
5) detect, pack.
As preferably, the granularity that described poly-slag agent is pulverized more than 3 tons according to the hot metal ladle capacity is 1.6mm～2.5mm.
As preferably, the granularity that described poly-slag agent is pulverized more than 2 ~ 3 tons according to the hot metal ladle capacity is 0.9mm～1.6mm.
As preferably, the granularity that described poly-slag agent is pulverized more than 1 ~ 2 ton according to the hot metal ladle capacity is 0.45mm～0.9mm.
As preferably, the granularity that described poly-slag agent is pulverized below 1 according to the hot metal ladle capacity is 0.25mm～0.45mm.
The present invention is owing to having adopted above-mentioned technical scheme, and the poly-slag agent of preparation can be played and adjust the scum composition to improve the effect of scum performance.Be after product adds, can form rapidly with the product that fusion process produces the block slag group of thickness, slag viscosity is sharply increased, produce larger surface tension between molten metal and slag interface, thereby make become very easy that separate of bits and metal liquid.Realized being easy to collect slag and deslagging by the present invention, fundamentally reduced the iron loss of skimming, by lowering basicity of slag, reduce slag molten temp, the mobility of scum after the raising desulfurization.The present invention makes to skim and saves 40% left and right (use this product to skim and be 15-20 time, and old to remove residue product be 27-35 time) than traditional technology, effectively reduces the molten iron loss that causes by skimming, and realizes energy-efficient.
Embodiment
The following specific embodiments of the present invention is to make a detailed explanation.
Embodiment 1
Raw material:
Albite 18%; Fluorite 22%;
Cullet 26%; Fabric and raw-vermiculite 15%;
Calcium carbonate 15%; Salt 4%;
1) albite, fluorite, fabric and raw-vermiculite, calcium carbonate and cullet is broken;
2) pulverize, the granularity of pulverizing is 1.6mm～2.5mm;
3) batching is with above-mentioned mixing of materials;
4) mixing, add salt mixing, melting temperature is 25 ℃, the time is 20min;
5) detection, packing make the poly-slag agent of hot metal ladle capacity more than 3 tons.
Embodiment 2
Raw material:
Albite 20%; Fluorite 21%;
Cullet 28%; Fabric and raw-vermiculite 12%;
Calcium carbonate 15%; Salt 4%;
1) albite, fluorite, fabric and raw-vermiculite, calcium carbonate and cullet is broken;
2) pulverize, the granularity of pulverizing is 0.9mm～1.6mm;
3) batching is with above-mentioned mixing of materials;
4) mixing, add salt mixing, melting temperature is 25 ℃, the time is 20min;
5) the poly-slag agent that detect, packing makes 2 ~ 3 tons of hot metal ladle capacity.
Embodiment 3
Raw material:
Albite 15%; Fluorite 25%;
Cullet 29%; Fabric and raw-vermiculite 14%;
Calcium carbonate 14%; Salt 3%;
1) albite, fluorite, fabric and raw-vermiculite, calcium carbonate and cullet is broken;
2) pulverize, the granularity of pulverizing is 0.45mm～0.9mm;
3) batching is with above-mentioned mixing of materials;
4) mixing, add salt mixing, melting temperature is 25 ℃, the time is 20min;
5) the poly-slag agent that detect, packing makes 1 ~ 2 ton of hot metal ladle capacity.
Embodiment 4
Raw material:
Albite 17%; Fluorite 23%;
Cullet 30%; Fabric and raw-vermiculite 12%;
Calcium carbonate 14%; Salt 4%;
1) albite, fluorite, fabric and raw-vermiculite, calcium carbonate and cullet is broken;
2) pulverize, the granularity of pulverizing is 0.25mm～0.45mm;
3) batching is with above-mentioned mixing of materials;
4) mixing, add salt mixing, melting temperature is 25 ℃, the time is 20min;
5) detection, packing make the poly-slag agent of hot metal ladle capacity below 1 ton.
Five Steel Plant use in the enough slags of the described poly-slag agent of the embodiment of the present invention 1 ~ 4 iron loss contrast table (unit: kg)
Claims (5)
1. the preparation method of a slag conglomeration agent for iron steel, is characterized in that the method comprises the following steps:
1) by weight percentage with albite 15% ~ 20%, fluorite 20% ~ 25%, fabric and raw-vermiculite 10% ~ 15%, calcium carbonate 10% ~ 15% and cullet 20% ~ 30% fragmentation;
2) pulverize, the granularity of pulverizing is 0.1～3.0mm;
3) batching is with above-mentioned mixing of materials;
4) mixing, add salt 1% ~ 5% mixing, melting temperature is 20 ~ 30 ℃, the time is 10 ~ 30min;
5) detect, pack.
2. the preparation method of a kind of slag conglomeration agent for iron steel according to claim 1 is characterized in that: the granularity that poly-slag agent is pulverized more than 3 tons according to the hot metal ladle capacity is 1.6mm～2.5mm.
3. the preparation method of a kind of slag conglomeration agent for iron steel according to claim 1 is characterized in that: poly-slag agent is 0.9mm～1.6mm according to the granularity of 2 ~ 3 tons of pulverizing of hot metal ladle capacity.
4. the preparation method of a kind of slag conglomeration agent for iron steel according to claim 1 is characterized in that: poly-slag agent is 0.45mm～0.9mm according to the granularity of 1 ~ 2 ton of pulverizing of hot metal ladle capacity.
5. the preparation method of a kind of slag conglomeration agent for iron steel according to claim 1 is characterized in that: the granularity that poly-slag agent is pulverized below 1 according to the hot metal ladle capacity is 0.25mm～0.45mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100896617A CN102586516B (en) | 2012-03-30 | 2012-03-30 | Method for preparing slag conglomeration agent for iron steel |
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| CN2012100896617A CN102586516B (en) | 2012-03-30 | 2012-03-30 | Method for preparing slag conglomeration agent for iron steel |
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| CN102586516A CN102586516A (en) | 2012-07-18 |
| CN102586516B true CN102586516B (en) | 2013-11-06 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104419837A (en) * | 2013-09-09 | 2015-03-18 | 宁波金田铜业(集团)股份有限公司 | Tin bronze slag conglomeration agent and preparation method thereof |
| CN104762433A (en) * | 2015-04-07 | 2015-07-08 | 舞钢市宇达节能冶金材料有限公司 | Cast iron metal liquid detergent |
| CN104962679A (en) * | 2015-07-21 | 2015-10-07 | 万燕杰 | Preparation method of slag conglomeration agent for converter refining |
| CN104928441A (en) * | 2015-07-21 | 2015-09-23 | 万燕杰 | Method for preparing slag conglomeration agent for refining of LF furnace |
| CN104928437A (en) * | 2015-07-21 | 2015-09-23 | 万燕杰 | Method for preparing steel slag accretion agent |
| CN113462848A (en) * | 2021-06-22 | 2021-10-01 | 杜鸽 | Vanadium-extracting slag-gathering agent for converter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392309A (en) * | 2008-11-04 | 2009-03-25 | 首钢总公司 | Slag conglomeration agent for hot metal pretreatment of magnesium injection and deep desulphurization and use method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392309A (en) * | 2008-11-04 | 2009-03-25 | 首钢总公司 | Slag conglomeration agent for hot metal pretreatment of magnesium injection and deep desulphurization and use method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 张婕 等.铁水脱硫用聚渣剂的研制.《山东冶金》.2005,第27卷(第2期),31-32. |
| 改进铁水镁脱硫聚渣剂聚集效果的试验;陈永树 等;《钢铁钒钛》;20100731;第31卷(第3期);54-58 * |
| 铁水脱硫用聚渣剂的研制;张婕 等;《山东冶金》;20050430;第27卷(第2期);31-32 * |
| 陈永树 等.改进铁水镁脱硫聚渣剂聚集效果的试验.《钢铁钒钛》.2010,第31卷(第3期),54-58. |
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Granted publication date: 20131106 Termination date: 20140330 |