CN105018679A - Final deoxidizer aluminum iron alloy for steelmaking and pressing preparation method of final deoxidizer aluminum iron alloy - Google Patents
Final deoxidizer aluminum iron alloy for steelmaking and pressing preparation method of final deoxidizer aluminum iron alloy Download PDFInfo
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- CN105018679A CN105018679A CN201510486028.5A CN201510486028A CN105018679A CN 105018679 A CN105018679 A CN 105018679A CN 201510486028 A CN201510486028 A CN 201510486028A CN 105018679 A CN105018679 A CN 105018679A
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses a final deoxidizer aluminum iron alloy for steelmaking and a pressing preparation method of the final deoxidizer aluminum iron alloy and belongs to the technical field of iron alloy. The chemical components (wt.%) of the aluminum iron alloy comprise 10-85% of Al and the balanced Fe, and further comprise a small amount of inevitable impurities. The preparation method comprises the steps that waste of industrial aluminum and industrial steel is made into aluminum scraps and steel scraps through crushing and screening, and the aluminum scraps and the steel scraps are evenly mixed after being matched according to the components of the alloy; and then the mixture is prepared into the aluminum iron alloy by use of a strong high-pressure press machine. The aluminum iron alloy serves as a final deoxidizer for use in steelmaking, and the problem that the alloy is prone to pulverization and oxidation is fundamentally solved; and the industrial waste of the aluminum and the steel is effectively and comprehensively used, and the final deoxidizer aluminum iron alloy is an efficient product capable of achieving environment protection and energy saving.
Description
Technical field
The present invention relates to technical field of iron alloy, be specifically related to a kind of steel-making end-deoxidizer ferroaluminium and compacting preparation method thereof, this ferroaluminium uses as end-deoxidizer during steel-making.
Background technology
At present, China's Iron And Steel Industry is ferroaluminium and aluminum-manganese-iron alloy all the time in the selection of steel-making end-deoxidizer, is still widely used so far.The production technique of this ferro-aluminum, aluminum-manganese-iron alloy all forms with line frequency furnace melting.This technique has waste gas and industrial dust to produce problem of environmental pollution in process of production, metallic aluminium has fire consumption and problem of oxidation in fusion process in addition, namely the consumption of aluminium is 2% (i.e. fire consumption, consume in vain), and the aluminium in final alloy is not all exist with the form of pure aluminum after testing, the Al of 3% is about had to exist with aluminum oxide form.Because Al is strong reductor, and 3% aluminum oxide contained in alloy not only can not play deoxidation effect, but also can worsen steel.As can be seen here, the ferroaluminium (Fig. 1) of main frequency furnace explained hereafter, aluminum-manganese-iron alloy, due to consumption and the oxidation of aluminium, in vain waste resource.And the easy efflorescence of this alloy (Fig. 2), should not store, transport and use, cause products production cost high.
Summary of the invention
For the weak point that above-mentioned employing line frequency furnace melting end-deoxidizer ferro-aluminum, aluminium ferromanganese exist, the object of this invention is to provide a kind of steel-making end-deoxidizer ferroaluminium and compacting preparation method thereof, adopt novel pressing process to produce ferroaluminium, it fundamentally solves the problem existing for the product of original explained hereafter.And in pressing process production process of the present invention, do not have waste gas and industrial dust to produce, there is no the consumption of aluminium and the problem of oxidation of aluminium and stopped the problem of alloy pulverization, belonging to environmental protection and energy saving product innovation.
For achieving the above object, the technical solution adopted in the present invention is as follows:
A kind of steel-making uses end-deoxidizer ferroaluminium, weight percentage, and this alloy composition is: Al 10 ~ 85%, and surplus is Fe and inevitable impurity.
The content of this Aluminum in Alloy is preferably 45 ~ 65wt.%, in impurity component: Si<1.20%, P<0.02%, S<0.02%.Al in this alloy
2o
3content is zero.
The above-mentioned ferroaluminium of the present invention adopts pressing process preparation, specifically comprises the steps:
(1) aluminum feedstock prepares: with industrial aluminium for aluminum feedstock, comprises one or more in the waste material of aluminium, aluminium end, aluminium bits and aluminium powder; In aluminum feedstock, the purity of aluminium is greater than 95%; Aluminum feedstock is for subsequent use after the aluminium bits that crushing and screening to granularity is 1 ~ 10mm.
(2) steel raw material prepares: with standard compliant Industrial Steels (purity is greater than 95%) for steel raw material, comprises one or more in the waste material of steel, steel end, steel cuttings and comminuted steel shot; Steel raw material is for subsequent use after crushing and screening to granularity is 1 ~ 10mm steel cuttings.
(3) gained aluminium bits and steel cuttings in step (1) and step (2) are prepared burden according to required alloying constituent, mix under agitation condition, obtain compound.
(4) adopt pressing machine that the compound in step (3) is pressed into described ferroaluminium, pressure used is 3000 ~ 6000KN.
Advantage of the present invention and beneficial effect as follows:
1, the present invention suppresses the dead meal that ferroaluminium raw material used is all aluminium and steel, refuse is utilized effectively, not only significantly reduce the manufacturing cost of product, there is no environmental pollution, save energy, and good product quality, fundamentally stopped the easy efflorescence of product and oxidizable problem, the effective rate of utilization of aluminium is improved, significantly reduces steel-making cost.
2, in pressing process of the present invention without material loss, thus improve raw material availability, save cost.
3, oxygen-freeization aluminium in the ferroaluminium prepared of the present invention, when using as end-deoxidizer, deoxidation effect is good, improves the quality of steel.
Accompanying drawing explanation
Fig. 1 is the ferroaluminium of line frequency furnace melting.
Fig. 2 is the ferroaluminium pulverized state of line frequency furnace melting.
Fig. 3 is ferroaluminium outside drawing prepared by the embodiment of the present invention 1.
Fig. 4 is compacting ferro-aluminum photo not shaping in comparative example 2.
Embodiment
Below in conjunction with drawings and Examples in detail the present invention is described in detail.
In following examples, with the industrial aluminium of conformance with standard (purity is greater than 95%) (comprising the waste material of aluminium, aluminium end, aluminium bits and aluminium powder etc.), for aluminum feedstock, aluminum feedstock is the aluminium bits of 1 ~ 10mm through crushing and screening to granularity; With the Industrial Steels of conformance with standard (purity is greater than 95%) (comprising the waste material of steel, steel end, steel cuttings and comminuted steel shot etc.), for steel raw material, steel raw material is 1 ~ 10mm steel cuttings through crushing and screening to granularity.
Embodiment 1:
The process that the present embodiment employing pressing process prepares ferroaluminium is as follows:
(1) aluminium bits and steel cuttings are prepared burden according to required alloying constituent, mix under agitation condition, obtain compound; Raw material interalloy composition is (wt.%): Al 10.12%, Fe surplus as calculated.
(2) adopt pressing machine that the compound in step (3) is pressed into described ferroaluminium, pressure used is 3200KN.
Ferroaluminium pattern prepared by the present embodiment as shown in Figure 3.
Embodiment 2:
The process that the present embodiment employing pressing process prepares ferroaluminium is as follows:
(1) aluminium bits and steel cuttings are prepared burden according to required alloying constituent, mix under agitation condition, obtain compound; Raw material interalloy composition is (wt.%): Al 20.27%, Fe surplus as calculated.
(2) adopt pressing machine that the compound in step (3) is pressed into described ferroaluminium, pressure used is 3200KN.
Embodiment 3:
The process that the present embodiment employing pressing process prepares ferroaluminium is as follows:
(1) aluminium bits and steel cuttings are prepared burden according to required alloying constituent, mix under agitation condition, obtain compound; Raw material interalloy composition is (wt.%): Al 30.68%, Fe surplus as calculated.
(2) adopt pressing machine that the compound in step (3) is pressed into described ferroaluminium, pressure used is 3500KN.
Embodiment 4:
The process that the present embodiment employing pressing process prepares ferroaluminium is as follows:
(1) aluminium bits and steel cuttings are prepared burden according to required alloying constituent, mix under agitation condition, obtain compound; Raw material interalloy composition is (wt.%): Al 41.38%, Fe surplus as calculated.
(2) adopt pressing machine that the compound in step (3) is pressed into described ferroaluminium, pressure used is 3500KN.
Embodiment 5:
The process that the present embodiment employing pressing process prepares ferroaluminium is as follows:
(1) aluminium bits and steel cuttings are prepared burden according to required alloying constituent, mix under agitation condition, obtain compound; Raw material interalloy composition is (wt.%): Al 50.28%, Fe surplus as calculated.
(2) adopt pressing machine that the compound in step (3) is pressed into described ferroaluminium, pressure used is 3800KN.
Embodiment 6:
The process that the present embodiment employing pressing process prepares ferroaluminium is as follows:
(1) aluminium bits and steel cuttings are prepared burden according to required alloying constituent, mix under agitation condition, obtain compound; Raw material interalloy composition is (wt.%): Al 55.31%, Fe surplus as calculated.
(2) adopt pressing machine that the compound in step (3) is pressed into described ferroaluminium, pressure used is 4000KN.
Embodiment 7:
The process that the present embodiment employing pressing process prepares ferroaluminium is as follows:
(1) aluminium bits and steel cuttings are prepared burden according to required alloying constituent, mix under agitation condition, obtain compound; Raw material interalloy composition is (wt.%): Al 60.13%, Fe surplus as calculated.
(2) adopt pressing machine that the compound in step (3) is pressed into described ferroaluminium, pressure used is 4000KN.
Embodiment 8:
The process that the present embodiment employing pressing process prepares ferroaluminium is as follows:
(1) aluminium bits and steel cuttings are prepared burden according to required alloying constituent, mix under agitation condition, obtain compound; Raw material interalloy composition is (wt.%): Al 70.32%, Fe surplus as calculated.
(2) adopt pressing machine that the compound in step (3) is pressed into described ferroaluminium, pressure used is 5000KN.
Embodiment 9:
The process that the present embodiment employing pressing process prepares ferroaluminium is as follows:
(1) aluminium bits and steel cuttings are prepared burden according to required alloying constituent, mix under agitation condition, obtain compound; Raw material interalloy composition is (wt.%): Al 84.93%, Fe surplus as calculated.
(2) adopt pressing machine that the compound in step (3) is pressed into described ferroaluminium, pressure used is 5500KN.
Carry out ultimate analysis and XRD detection to the ferroaluminium stated prepared by embodiment 1-9, each embodiment chemical composition is as shown in table 1.
Ferroaluminium chemical composition (wt.%) prepared by table 1 embodiment
| Alloy sample | Al | Si | P | S | Fe | Al 2O 3 |
| Embodiment 1 | 10.12 | 1.02 | 0.011 | 0.012 | Surplus | Nothing |
| Embodiment 2 | 20.27 | 0.92 | 0.010 | 0.011 | Surplus | Nothing |
| Embodiment 3 | 30.68 | 1.13 | 0.014 | 0.016 | Surplus | Nothing |
| Embodiment 4 | 41.38 | 0.89 | 0.013 | 0.014 | Surplus | Nothing |
| Embodiment 5 | 50.28 | 1.17 | 0.015 | 0.017 | Surplus | Nothing |
| Embodiment 6 | 55.31 | 1.19 | 0.016 | 0.018 | Surplus | Nothing |
| Embodiment 7 | 60.13 | 1.18 | 0.017 | 0.019 | Surplus | Nothing |
| Embodiment 8 | 70.32 | 1.10 | 0.019 | 0.013 | Surplus | Nothing |
| Embodiment 9 | 84.93 | 1.18 | 0.011 | 0.012 | Surplus | Nothing |
As can be seen from table 1 data, pressing process of the present invention is adopted to prepare the consumption and aluminum oxidation not having aluminium in the process of ferroaluminium, oxygen-freeization aluminium in prepared ferroaluminium product.
Comparative example 1:
Difference from Example 1 is: the granularity > 10mm of aluminium bits and steel cuttings in starting material.
The product suppressed as shown in Figure 2.The alloy then suppressed is unsuitable shaping, and density declines, and production efficiency significantly reduces.
Comparative example 1:
Difference from Example 1 is: in starting material aluminium bits and steel cuttings respectively crushing and screening be that the equal > 10mm of granularity and granularity are all less than 1mm two kinds of grades.Result shows, as granularity > 10mm, then the alloy suppressed is unsuitable shaping, and density declines, and production efficiency significantly reduces.If during granularity < 1mm, then press not shaping.
Comparative example 2:
Difference from Example 1 is: take 1000KN, 2000KN, 2500KN, 6500KN to suppress mixing raw material respectively, result shows: it is more suitable that pressure should be 3000 ~ 6000KN, if pressure is lower than 3000KN, then press not shaping, aluminium and iron-binding capacity have opened (Fig. 4) with regard to loose not.If pressure is greater than 6000KN, then what make aluminium and iron combine is too fine and close, and production efficiency declines on the contrary, and production cost increases.
Embodiment 10
The present invention is suppressed ferroaluminium and be used for the end-deoxidizer that certain steel mill smelts AH32, ABLA1A, ABMM31 steel grade.The results showed, the recovery rate of aluminium and contrast product (ferro-aluminum, aluminium ferromanganese) are suitable, completely can alternate application.Good product quality of the present invention, not efflorescence is not oxidized.Use the present invention effectively can reduce steel-making cost, can reduce by 1.17 yuan/t through measuring and calculating ton steel cost, the whole nation can save value 3.5 hundred million yuan every year, and social benefit is very remarkable.
Claims (7)
1. an end-deoxidizer ferroaluminium is used in steel-making, and it is characterized in that: weight percentage, this alloy composition is: Al 10 ~ 85%, and surplus is Fe and inevitable impurity.
2. steel-making end-deoxidizer ferroaluminium according to claim 1, is characterized in that: the content of this Aluminum in Alloy is 45 ~ 65wt.%.
3. steel-making end-deoxidizer ferroaluminium according to claim 1 and 2, is characterized in that: in this alloy in chemical composition: Si<1.20%, P<0.02%, S<0.02%.
4. the compacting preparation method of steel-making end-deoxidizer ferroaluminium according to claim 1, is characterized in that: described ferroaluminium adopts pressing process preparation, specifically comprises the steps:
(1) aluminum feedstock prepares: with industrial aluminium for aluminum feedstock, and aluminum feedstock is for subsequent use after the aluminium bits that crushing and screening to granularity is 1 ~ 10mm;
(2) steel raw material prepares: take Industrial Steels as steel raw material, steel raw material is for subsequent use after crushing and screening to granularity is 1 ~ 10mm steel cuttings;
(3) gained aluminium bits and steel cuttings in step (1) and step (2) are prepared burden according to required alloying constituent, mix under agitation condition, obtain compound;
(4) adopt pressing machine that the compound in step (3) is pressed into described ferroaluminium.
5. the compacting preparation method of steel-making end-deoxidizer ferroaluminium according to claim 4, it is characterized in that: in step (1), described industrial aluminium be aluminium waste material, aluminium end, aluminium bits and aluminium powder in one or more, industrial aluminium purity is greater than 95%.
6. the compacting preparation method of steel-making end-deoxidizer ferroaluminium according to claim 4, it is characterized in that: in step (2), described Industrial Steels is one or more in the waste material of steel, steel end, steel cuttings and comminuted steel shot, and Industrial Steels purity is greater than 95%.
7. the compacting preparation method of steel-making end-deoxidizer ferroaluminium according to claim 4, it is characterized in that: in step (4), pressing machine pressure used is 3000 ~ 6000KN.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105734201A (en) * | 2016-04-01 | 2016-07-06 | 武汉宏钢晟科技发展有限公司 | Aluminum and iron alloy and preparing method and application thereof |
| CN106555027A (en) * | 2016-12-01 | 2017-04-05 | 广西玉林市绿盛科贸有限责任公司 | A kind of alfer pelletizing and preparation method thereof |
| CN107794343A (en) * | 2017-09-30 | 2018-03-13 | 武汉金钢新材料有限公司 | A kind of alfer as molten-steel deoxidation agent and preparation method thereof |
| CN107904356A (en) * | 2017-11-21 | 2018-04-13 | 安阳金源冶金材料有限责任公司 | With deoxidizing purification metal charge and preparation method thereof before one kind steel-making tapping |
| CN108977622A (en) * | 2018-08-02 | 2018-12-11 | 山东济钢合金材料科技有限公司 | A method of steel-making aluminium deoxidizer is processed using aluminium waste |
| CN110387453A (en) * | 2019-08-14 | 2019-10-29 | 上海盛宝冶金科技有限公司 | A kind of ferro-aluminum ball and its methods for making and using same |
| CN111218541A (en) * | 2020-03-04 | 2020-06-02 | 湛江申翰科技实业有限公司 | High-strength spherical composite deoxidizer and preparation method thereof |
| CN112824974A (en) * | 2019-11-20 | 2021-05-21 | 墨子光电有限公司 | Micro-imaging device and processing method thereof |
| CN112877493A (en) * | 2021-01-14 | 2021-06-01 | 内蒙古星晟工程技术有限公司 | Spheroidizing agent and preparation method thereof |
| CN112877504A (en) * | 2021-01-14 | 2021-06-01 | 内蒙古星晟工程技术有限公司 | Deoxidizing agent and preparation method thereof |
| CN112877503A (en) * | 2021-01-14 | 2021-06-01 | 内蒙古星晟工程技术有限公司 | Deoxidizing agent and preparation method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105734201A (en) * | 2016-04-01 | 2016-07-06 | 武汉宏钢晟科技发展有限公司 | Aluminum and iron alloy and preparing method and application thereof |
| CN105734201B (en) * | 2016-04-01 | 2018-05-25 | 武汉宏钢晟科技发展有限公司 | A kind of alfer, preparation method and the usage |
| CN106555027A (en) * | 2016-12-01 | 2017-04-05 | 广西玉林市绿盛科贸有限责任公司 | A kind of alfer pelletizing and preparation method thereof |
| CN107794343A (en) * | 2017-09-30 | 2018-03-13 | 武汉金钢新材料有限公司 | A kind of alfer as molten-steel deoxidation agent and preparation method thereof |
| CN107904356A (en) * | 2017-11-21 | 2018-04-13 | 安阳金源冶金材料有限责任公司 | With deoxidizing purification metal charge and preparation method thereof before one kind steel-making tapping |
| CN108977622A (en) * | 2018-08-02 | 2018-12-11 | 山东济钢合金材料科技有限公司 | A method of steel-making aluminium deoxidizer is processed using aluminium waste |
| CN110387453A (en) * | 2019-08-14 | 2019-10-29 | 上海盛宝冶金科技有限公司 | A kind of ferro-aluminum ball and its methods for making and using same |
| CN112824974A (en) * | 2019-11-20 | 2021-05-21 | 墨子光电有限公司 | Micro-imaging device and processing method thereof |
| CN111218541A (en) * | 2020-03-04 | 2020-06-02 | 湛江申翰科技实业有限公司 | High-strength spherical composite deoxidizer and preparation method thereof |
| CN112877493A (en) * | 2021-01-14 | 2021-06-01 | 内蒙古星晟工程技术有限公司 | Spheroidizing agent and preparation method thereof |
| CN112877504A (en) * | 2021-01-14 | 2021-06-01 | 内蒙古星晟工程技术有限公司 | Deoxidizing agent and preparation method thereof |
| CN112877503A (en) * | 2021-01-14 | 2021-06-01 | 内蒙古星晟工程技术有限公司 | Deoxidizing agent and preparation method thereof |
| CN112877493B (en) * | 2021-01-14 | 2023-02-10 | 内蒙古星晟工程技术有限公司 | Spheroidizing agent and preparation method thereof |
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Application publication date: 20151104 |