CN1262337A - One-step process for producing SiCaAlBaFe alloy with ore roaster - Google Patents
One-step process for producing SiCaAlBaFe alloy with ore roaster Download PDFInfo
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- CN1262337A CN1262337A CN 00101497 CN00101497A CN1262337A CN 1262337 A CN1262337 A CN 1262337A CN 00101497 CN00101497 CN 00101497 CN 00101497 A CN00101497 A CN 00101497A CN 1262337 A CN1262337 A CN 1262337A
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- coke
- ore deposit
- barium
- alloy
- sicaalbafe
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Abstract
An one-step process for producing SiCaAlBaFe alloy with ore heater features that the silica rock, lime, aluminium ore (bauxite or aluminium gangue), barium ore (barite or barium carbonate), steel bits or iron ore and coke are proportionally and sequentially added to ore heater. The obtained alloy can be used for final deozygenation of molten steel, inoculating cast iron and modifying impurities to obtain superpure steel.
Description
The production technique of the present invention and a kind of iron alloy, particularly single stage method are produced the production technique of SiCaAlBaFe alloy composite deoxidant in the hot stove in ore deposit.
Along with development of modern industry, more and more higher requirement has been proposed steel product quality.The principal element that influences steel product quality is steel inclusion amount and distribution thereof, along with the continuous removal to inclusion, has proposed the notion of Clean Steel, ultra clean steel.For adapting to the needs of producing ultra clean steel, reductor is also in continuous evolution.Original adoption aluminium, ferrosilicon, silicomanganese etc. carry out deoxidation, adopt ferrosilicoaluminum the end of the seventies, and the eighties be used widely since aluminium have with the oxygen binding ability strong, characteristics such as can in molten steel, dissolve each other fully, generally be used for steel-making and carry out bulk deoxidation, but because aluminum ratio is heavy little, scaling loss is serious when deoxidation, shortcomings such as the lower and deoxidation products of the utilization ratio of aluminium is difficult for discharging from molten steel have seriously limited the use of aluminium as the reductor of Clean Steel.
Show by the deoxidation comparative experimental research to reductors such as aluminium, calcium, magnesium, barium: calcium has very strong deoxidizing capacity and inclusion modification ability, but the high-vapor-pressure of calcium and lower boiling have limited its widespread use, and barium has the deoxidizing capacity stronger than aluminium, density than calcium, magnesium is big, the boiling point height, low-steam pressure, thus help improving yield of alloy and deoxidation efficient.Because the special performance of calcium, barium, on the basis of silicon, aluminium complex deoxidization, adopting the compound gold of silico-calcium aluminium barium to handle molten steel can obtain: (1) reduces gas and the inclusion content in the steel; (2) make Al
2O
3For the oxide inclusion sex change of base is that tiny, uniform spherical is mingled with, the inclusion pollution level in the steel is significantly reduced; (3) carbide in the change steel and attribute, pattern, quantity, size and the distribution of non-metallic inclusion are strengthened crystal boundary or are played the microalloying effect, improve the performance of material; (4) reduce Al in the steel
2O
3Be mingled with and the aluminium amount, help eliminating the continous casting sprue dross; (5) joint aluminium consumption reduction is increased economic efficiency.
At present, the main method of producing silico-calcium aluminium barium composite alloy is: Si-Ba alloy and silicocalcium and aluminium melt convert, Alsimin and silicon barium and silicocalcium melt and convert and silicon-aluminium-barium alloy and silicocalcium melt method such as convert, all these are molten converts method and all has the raw materials cost height, shortcomings such as the big and energy consumption height of melting loss of elements.
The purpose of this invention is to provide a kind of is main raw material with lime, silica, barium ore deposit, bauxitic clay and steel cuttings or iron ore and coke, adds the production technique that a step is smelted into the SiCaAlBaFe alloy composite deoxidant in the hot stove in ore deposit by layering is reinforced.
The object of the present invention is achieved like this: the present invention is a main raw material with silica, lime, aluminium stone (bauxitic clay or aluminum anhydride stone), barium ore deposit (barite or barium carbonate), steel cuttings or iron ore and coke, is composite deoxidant by proportioning by smelting into SiCaAlBaFe alloy in the hot stove in layering reinforced method adding ore deposit.
Because the present invention adopts is that original mineral such as silica is as raw material, so its production cost is low, also can overcome the big and high shortcoming of energy consumption of melting loss of elements in the production process, prepared SiCaAlBaFe alloy constant product quality, alloy content is: Si:25-55%; Ca:5-25%; Al:10-25%; Ba:5-25%; P, S≤0.05%; Surplus is an iron.Alloys such as the alternative aluminium of product, ferrosilicoaluminum, silicon barium, silico-calcium, sial barium and silico-calcium barium are as molten steel final deoxygenation and inclusion modification and Preparation of Castiron processing, and the final deoxygenation and the inclusion modification that are particularly suitable for ultra-clean steel are handled.
Further specifying the hot stove single stage method in ore deposit of the present invention below in conjunction with embodiment produces SiCaAlBaFe alloy technology and how to realize: feature of the present invention is to be main raw material with silica, lime, aluminium stone (bauxitic clay or aluminum anhydride stone), barium ore deposit (barite or barium carbonate), steel cuttings or iron ore and coke, adds in the hot stove in ore deposit by the reinforced method of layering and smelts into the SiCaAlBaFe alloy composite deoxidant; The weight proportion of main raw material of the present invention is (Kg/ part): silica 100-230Kg/ part, lime 30-80Kg/ part, aluminium stone (bauxitic clay or aluminum anhydride stone) 20-180Kg/ part, barium ore deposit (barite or barium carbonate) 30-80Kg/ part, coke (grain) 80-180Kg/ part; Its raw material grade is (%): the SiO in the silica
2≤ 90%, the CaO in the Wingdale 〉=90%, the SiO in the silica (bauxitic clay or aluminum anhydride stone)
2Be 15-35%, Al
2O
3Be 60-85%, the BaSO in barium ore deposit (barite or barium carbonate)
4And BaCO
2Content is greater than 80%, the iron level in the steel cuttings 〉=95% (in the iron ore with iron grade 〉=50%), and the fixed carbon content in burnt (grain) carbon is greater than 80%.When the raw material grade is lower than above-mentioned value, can suitably adjust proportioning raw materials according to the actual grade of each raw material.
Concrete implementing process of the present invention is:
One, raw material is prepared: by the raw material grade of above-mentioned requirements with various raw material crushings to following granularity, and raw material cleaned up (except the coke), guarantee that raw material drying does not have other impurity, use in order to smelting
Raw material granularity is: bauxitic clay: 50-120mm; Silica: 50-120mm; Wingdale: 50-120mm; Barite: 50-120mm; Steel cuttings: 50-1000mm (the iron ore granularity is 50-100mm); Coke 5-50mm.
Two, smelting technology: the various raw materials that will choose are prepared burden according to the requirement of alloy smelting composition, and smelting in the good hot stove in ore deposit has been dried by the fire in adding in the following manner.
Embodiment 1: the mode that silica and coke, bauxitic clay and coke, lime and coke and barium ore deposit (or lime and coke, barium ore deposit and coke also layering add) added with layering adds drying by the fire in the good hot stove in ore deposit energising and smelts, fed in raw material once in general 20-90 minute, according to going out one time alloy, tapping temperature 1000-2000 ℃ in the every 2-8 of the working of a furnace hour.In smelting process, utilize coke and the silicon that restores, aluminium to make reductive agent, and by suitably adjusting CaO, BaO, SiO
2And Al
2O
3Ratio, improve the reduction ratio of barium and calcium.
Embodiment 2: the mode that bauxitic clay and coke, silica and coke, lime and coke and barium ore deposit (or lime and coke, barium ore deposit and coke also layering add) added with layering adds drying by the fire in the good hot stove in ore deposit energising and smelts, added a defective material in general 20-90 minute, go out a stove alloy according to the every 2-8 of the working of a furnace hour, tapping temperature is 1000-2000 ℃.In smelting process, utilize coke and the silicon that restores, aluminium to make reductive agent, and by suitably adjusting CaO, BaO, SiO
2And Al
2O
3Ratio, improve the reduction ratio of barium and calcium.
Embodiment 3: the mode that the mixing of silica and bauxitic clay and coke, lime and coke and barium ore deposit (or lime and coke, barium ore deposit and coke also layering add) added with layering adds drying by the fire in the good hot stove in ore deposit energising and smelts, added a defective material in general 20-90 minute, go out a stove alloy according to the every 2-8 of the working of a furnace hour, tapping temperature is 1000-2000 ℃.In smelting process, utilize coke, and the silicon that restores, aluminium is as reductive agent, and by suitably adjusting CaO, BaO, SiO
2And Al
2O
3Ratio, improve the reduction ratio of barium and calcium.
The hot stove single stage method in ore deposit of the present invention is produced silico-calcium barium ferroaluminium processing method, also can produce silico-calcium barium-ferrum alloy (cancelling bauxitic clay in batching), sial barium (cancelling lime in batching), ferrosilicoaluminum (at batching cancellation barium ore deposit and lime) and Si-Ba alloy (cancellation bauxitic clay and lime in batching) according to customer requirements
The hot stove single stage method in ore deposit of the present invention is produced SiCaAlBaFe alloy technology and is applicable to 560KVA, 1000KVA, the hot stove of 1800KVA and 3200KVA ore deposit, especially with the hot stove of 500KVA, 1000KVA and 1800KVA ore deposit for well, it is easy to operate, technology is reliable.
Claims (8)
1, the invention discloses the hot stove single stage method in a kind of ore deposit and produce SiCaAlBaFe alloy technology, it is characterized in that: SiCaAlBaFe alloy of the present invention is main raw material, adds in the hot stove in ore deposit by the reinforced method of layering and smelt into SiCaAlBaFe alloy with silica, lime, aluminium stone (bauxitic clay or aluminum anhydride stone), barium ore deposit (barite or barium carbonate), steel cuttings or iron ore and coke.
2, the hot stove single stage method in ore deposit according to claim 1 is produced SiCaAlBaFe alloy technology, it is characterized in that: the weight proportion of SiCaAlBaFe alloy main raw material of the present invention (Kg/ part): silica 100-230Kg/ part, lime 30-80Kg/ part, aluminium stone (bauxitic clay or aluminum anhydride stone) 20-180Kg/ part, barium ore deposit (barite or barium carbonate) 30-80Kg/ part, burnt (grain) carbon 80-180Kg/ part.
3, the hot stove single stage method in ore deposit according to claim 2 is produced SiCaAlBaFe alloy technology, it is characterized in that: the grade of SiCaAlBaFe alloy main raw material of the present invention is (%): the SiO in the silica
2〉=90%; CaO in the Wingdale 〉=90%, the SiO in the aluminium stone (bauxitic clay or aluminum anhydride stone)
2Be 15-35%, Al
2O
3Be 65-35%; BaSO in the barium ore deposit (barite or barium carbonate)
2And BaCO
2Content is greater than 80%, the iron level in the steel cuttings 〉=95% (iron grade 〉=50% in the iron ore), and the fixed carbon content in the coke (grain) is greater than 80%.
4, the hot stove single stage method in ore deposit according to claim 1 is produced the SiCaAlBaFe alloy production technique, it is characterized in that: described production technique is to requiring granularity with described raw material crushing, and by behind the described proportion ingredient, with silica and coke, bauxitic clay and coke, the mode that Wingdale and coke and barium ore deposit (or lime and the also layering adding of coke, barium ore deposit and coke) add with layering adds drying by the fire energising smelting in the good hot stove in ore deposit, added a defective material in every 20-90 minute, went out a stove alloy in every 2-3 hour, tapping temperature is 1000-2000 ℃; In smelting process, utilize coke and the silicon that restores, aluminium to make reductive agent, and by suitably adjusting CaO, BaO, SiO
2And Al
2O
3Ratio, improve the reduction ratio of barium and calcium.
5, the hot stove single stage method in ore deposit according to claim 4 is produced SiCaAlBaFe alloy technology, it is characterized in that: described production technique is the mode that described bauxite raw material and coke, silica and coke, lime and coke and barium ore deposit (or lime and coke, barium ore deposit and coke also layering add) adds with layering to be added drying by the fire in the good hot stove in ore deposit energising and smelt, added a defective material in every 20-90 minute, went out a stove alloy in every 2-8 hour, tapping temperature is 1000-2000 ℃; In smelting process, utilize coke and the silicon that restores, aluminium as reductive agent, and by suitably adjusting CaO, BaO, SiO
2And Al
2O
3Ratio, improve the reduction ratio of barium and calcium.
6, the hot stove single stage method in ore deposit according to claim 4 is produced SiCaAlBaFe alloy technology, it is characterized in that: described production technique is the mode that the mixing of described material silex and bauxitic clay and coke, lime and coke and barium ore deposit (or lime and coke, barium ore deposit and coke also layering add) adds with layering to be added drying by the fire in the good hot stove in ore deposit energising and smelt, and adds that a defective material, every 2-3 hour go out a stove alloy, tapping temperature is 1000-2000 ℃ in every 20-90 minute; The sial that utilizes coke and restore in smelting process is as reductive agent, and by suitably adjusting CaO, BaO, SiO
2And Al
2O
3Ratio, improve the reduction ratio of barium and calcium.
7, the hot stove single stage method in ore deposit according to claim 4 is produced SiCaAlBaFe alloy technology, it is characterized in that: the granularity of described various raw material crushings is: bauxitic clay 50-120mm, silica 50-120mm, Wingdale 50-120mm, barite 50-120mm, steel cuttings 50-1000mm (the iron ore granularity is 50-100mm), coke 5-50mm.
8, produce SiCaAlBaFe alloy technology according to the hot stove single stage method of claim 1 and 4 described ore deposits, it is characterized in that: the hot stove single stage method in ore deposit of the present invention is produced SiCaAlBaFe alloy technology and also be can be used for producing silico-calcium barium-ferrum alloy (cancelling bauxitic clay in batching), sial barium (cancelling lime in batching), ferrosilicoaluminum (cancellation barium ore deposit and lime in batching) and Si-Ba alloy (cancellation bauxitic clay and lime in batching).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00101497 CN1262337A (en) | 2000-02-02 | 2000-02-02 | One-step process for producing SiCaAlBaFe alloy with ore roaster |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00101497 CN1262337A (en) | 2000-02-02 | 2000-02-02 | One-step process for producing SiCaAlBaFe alloy with ore roaster |
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|---|---|
| CN1262337A true CN1262337A (en) | 2000-08-09 |
Family
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|---|---|---|---|
| CN 00101497 Pending CN1262337A (en) | 2000-02-02 | 2000-02-02 | One-step process for producing SiCaAlBaFe alloy with ore roaster |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327007C (en) * | 2005-10-26 | 2007-07-18 | 李兴有 | Al-Mg-Ca-Fe alloy contg. micro-carbon, low silicon, low phosphorous, low-sulphur used for steelmaking |
| CN102559996A (en) * | 2011-12-31 | 2012-07-11 | 淅川县森丽钢铁炉料有限公司 | New silicon-aluminum-barium-calcium multicomponent deoxidation alloy for steelmaking and preparation technology thereof |
| CN104226983A (en) * | 2014-09-28 | 2014-12-24 | 四川德胜集团钒钛有限公司 | Ferrovanadium smelting raw material homogenizing method and equipment |
| CN109837387A (en) * | 2017-11-28 | 2019-06-04 | 丹阳市延陵镇优越合金厂 | A kind of water pipe alloy material and preparation method thereof |
| CN113061689A (en) * | 2021-03-24 | 2021-07-02 | 宁夏科通新材料科技有限公司 | Method for preparing silicon-calcium-barium-aluminum alloy from ore raw material |
| CN116287554A (en) * | 2023-02-16 | 2023-06-23 | 马鞍山市九鹏嘉腾机械实业有限公司 | Silicon-calcium aluminum alloy and production process thereof |
-
2000
- 2000-02-02 CN CN 00101497 patent/CN1262337A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327007C (en) * | 2005-10-26 | 2007-07-18 | 李兴有 | Al-Mg-Ca-Fe alloy contg. micro-carbon, low silicon, low phosphorous, low-sulphur used for steelmaking |
| CN102559996A (en) * | 2011-12-31 | 2012-07-11 | 淅川县森丽钢铁炉料有限公司 | New silicon-aluminum-barium-calcium multicomponent deoxidation alloy for steelmaking and preparation technology thereof |
| CN104226983A (en) * | 2014-09-28 | 2014-12-24 | 四川德胜集团钒钛有限公司 | Ferrovanadium smelting raw material homogenizing method and equipment |
| CN109837387A (en) * | 2017-11-28 | 2019-06-04 | 丹阳市延陵镇优越合金厂 | A kind of water pipe alloy material and preparation method thereof |
| CN113061689A (en) * | 2021-03-24 | 2021-07-02 | 宁夏科通新材料科技有限公司 | Method for preparing silicon-calcium-barium-aluminum alloy from ore raw material |
| CN113061689B (en) * | 2021-03-24 | 2022-05-17 | 宁夏科通新材料科技有限公司 | Method for preparing silicon-calcium-barium-aluminum alloy from ore raw material |
| CN116287554A (en) * | 2023-02-16 | 2023-06-23 | 马鞍山市九鹏嘉腾机械实业有限公司 | Silicon-calcium aluminum alloy and production process thereof |
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