CN106555027A - A kind of alfer pelletizing and preparation method thereof - Google Patents
A kind of alfer pelletizing and preparation method thereof Download PDFInfo
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- CN106555027A CN106555027A CN201611093153.0A CN201611093153A CN106555027A CN 106555027 A CN106555027 A CN 106555027A CN 201611093153 A CN201611093153 A CN 201611093153A CN 106555027 A CN106555027 A CN 106555027A
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- alfer
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0006—Adding metallic additives
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of alfer pelletizing and preparation method thereof, belongs to technical field of iron alloy.The chemical composition (wt%) of the alfer：Al is 35.0～55.0%, Fe surpluses, also containing a small amount of inevitably impurity.Its preparation is according to mix homogeneously after alloy compositions dispensing by high purity aluminum powder and high-purity reduced iron powder, add mix homogeneously under 0.1～0.7% binding agent stirring condition of alloy gross mass, obtained by pelletizing and expect at the beginning of pelletizing, then alfer is made into strong high pressure press.The alfer pelletizing is used as whole killer during steel-making, fundamentally solves the problems, such as the easy efflorescence of alloy and oxidizable, and the ferro-aluminum pellet strength height of preparation, density are big, impurity content is low, belong to high-quality environmental protection and energy saving new product.
Description
Technical field
The present invention relates to technical field of iron alloy, and in particular to a kind of alfer pelletizing and preparation method thereof, the ferro-aluminum
Alloy pelletizing is used as whole killer during steel-making.
Background technology
At present, China's steel and iron industry is alfer in the selection of the whole killer of steel-making all the time, still extensive so far
Using.The production technology of this alfer is typically all that with electro-smelting, i.e., first melting steel material becomes liquid again
Aluminum material is added, alloy block is finally made, such as patent " a kind of alfer deoxidizer automatic continuous casting machine " (application number
201220003152.3).This kind of technique has substantial amounts of carbon dioxide and industrial dust (flue dust) in process of production, seriously
Pollution environment.There is fire consumption and problem of oxidation in fusion process in what is more important, metallic aluminium.Fire consumption is due to in-furnace temperature
Higher than aluminum fusing point and steam raising, the ratio of general fire consumption is more than 2%；Oxidation is that, as aluminum is strong deoxidizer, pure aluminum is fast
Speed is combined production aluminium oxide with oxygen, and this oxidized aluminum accounts for the 3% of the total amount of aluminum.It is this with aoxidize al species exist
Aluminum can not only play deoxidation effect, but also can deteriorate steel.As can be seen here, the alfer of eaf process production is due to aluminum
Consumption and oxidation, waste bauxite resource, alloy product is of low quality, and the easy efflorescence of the alloy, should not store, transports and make
With what is more important Metal Melting needs to consume the substantial amounts of energy, produces the waste gas and dust of substantial amounts of pollution environment, causes
Production cost and Environmental costs are high.
Therefore, compressing technique is tested by domestic also some producers.Such as propose with containing aluminum more than 95% and steely
95% waste material prepares alfer block using pressing process.The method prepares alfer well to we provide one kind
Inspiration, but which has inborn deficiency：(1) aluminium skimmings for adopting and steel cuttings, particulate matter are excessive, and its later stage simply suppresses, and hold
Bulk cargo is easily caused, certified products are relatively low when steel-making is used；(2) the super target element such as Cu, C, Pb is contained with the aluminum of recovery, ferrum waste material,
Which adds converter or electric furnace to carry out whole steel-deoxidizing, can deteriorate steel.
The content of the invention
For the weak point that above-mentioned employing electro-smelting end killer ferro-aluminum block and simple compacting ferro-aluminum block are present, this
The purpose of invention is to provide a kind of alfer pelletizing and preparation method thereof, produces ferro-aluminum with Forging Technology using new pelletizing
Alloy, it fundamentally solves the problems of product of existing process production.Do not produce in production process of the present invention useless
Gas and industrial dust pollution environment, do not have the consumption of aluminum and the problem of oxidation of aluminum and have prevented the problem of alloy pulverization, preparation
Ferro-aluminum pellet strength is high, density is big, impurity content is low, belongs to high-quality environmental protection and energy saving new product.
For achieving the above object, the technical solution adopted in the present invention is as follows：
A kind of alfer pelletizing and preparation method thereof, by mass percentage, the chemical composition of described alfer
For Al：35.0～55.0%, balance of Fe and a small amount of inevitably impurity.
Preferably, the chemical Composition Control of impurity exists in described alfer：Si ＜ 1.20%, P ＜ 0.02%, S
＜ 0.02%, Cu ＜ 0.02%, C ＜ 0.10%.Al in the alloy2O3Content is zero.
Described alfer preparation technology, specifically includes following steps：
(1) prepared by aluminium powder：With industrial aluminium foil of the aluminium content not less than 96.0% as aluminum feedstock, aluminum feedstock Jing is broken, wet
Method ball milling, drying, be sized to it is standby after the aluminium powder that granularity is 150～250 mesh；
(2) prepared by iron powder：With iron scale as raw material, by hydrogen reducing or secondary carbon reduction after again ball milling, be sized to
Granularity be 150～250 mesh iron powder after it is standby, in iron powder the content of ferrum be not less than 98.0%；
(3) gained aluminium powder in step (1) and step (2) and iron powder are carried out into dispensing according to required alloying component, adds and close
Mix homogeneously under 0.1～0.7% binding agent stirring condition of golden gross mass, is obtained by pelletizing and expect at the beginning of pelletizing；
(4) compound in step (3) is forged into by the alfer pelletizing product using forcing press.
The binding agent is waterglass and aluminate cement according to 1: (0.5～1.5) carries out mixed preparing and forms.
Pressure used by the forcing press is 3000～5000KN.
Advantages of the present invention and have the beneficial effect that：
(1) alfer prepared by the present invention is once bondd using high purity aluminum powder and iron powder and once forging and stamping are formed, no
The manufacturing cost of product, no environmental pollution, energy saving, and good product quality are only significantly reduced, is fundamentally prevented
The easy efflorescence of product and oxidizable problem, improve the effective rate of utilization of aluminum, significantly reduce steel-making cost.
(2) present invention adopts the preparation technology that pelletizing and forging and stamping are combined, and finished product rate is high, and loss is little, so as to improve
Raw material availability, it is cost-effective.
(3) material purity of alfer prepared by the present invention is high, without introduced contaminantses such as Cu, also not salic, makees
When using for whole killer, deoxidation effect is good, whole steel quality is good.
Description of the drawings
1 existing electric furnace casting technique of accompanying drawing produces alfer
The alfer (bulk cargo occur) of 2 comparative example of accompanying drawing production
The alfer (non-bulk cargo) of 3 present invention of accompanying drawing
Specific embodiment
Below in conjunction with drawings and Examples in detail the present invention is described in detail.
In following examples, aluminium powder, iron powder and binding agent are prepared by the following method：
(1) prepared by aluminium powder：With industrial aluminium foil of the aluminium content not less than 96.0% as aluminum feedstock, aluminum feedstock Jing is broken, wet
Method ball milling, drying, be sized to it is standby after the aluminium powder that granularity is 150～250 mesh；
(2) prepared by iron powder：With iron scale as raw material, by hydrogen reducing or secondary carbon reduction after again ball milling, be sized to
Granularity be 150～250 mesh iron powder after it is standby, in iron powder the content of ferrum be not less than 98.0%；
(3) waterglass and aluminate cement are according to 1: (0.5～1.5) carry out mixed preparing and form binding agent be.
Embodiment 1：
The present embodiment prepares alfer using following techniques：
(1) will be the aluminium powder of 200 mesh and containing the ferrum that fe 98.0%, granularity is 200 mesh containing pure aluminum 97.0%, granularity
Powder carries out dispensing according to required alloying component, mix homogeneously under stirring condition, obtains compound；It is computed alloying component in raw material
For (wt%)：Al 35.18%, Fe surplus.
(2) mix homogeneously under 0.3% binding agent stirring condition of alloy gross mass is added, is obtained at the beginning of pelletizing by pelletizing
Compound in step (1) is pressed into the alfer using forcing press by material, and pressure used is 3000KN.
Embodiment 2：
The present embodiment prepares alfer using following techniques：
(1) will be the aluminium powder of 250 mesh and containing the ferrum that fe 99.0%, granularity is 250 mesh containing pure aluminum 98.0%, granularity
Powder carries out dispensing according to required alloying component, mix homogeneously under stirring condition, obtains compound；It is computed alloying component in raw material
For (wt%)：Al 45.35%, Fe surplus.
(2) mix homogeneously under 0.7% binding agent stirring condition of alloy gross mass is added, is obtained at the beginning of pelletizing by pelletizing
Compound in step (1) is pressed into the alfer using forcing press by material, and pressure used is 4000KN.
Embodiment 3：
The present embodiment prepares alfer using following techniques：
(1) will be the aluminium powder of 150 mesh and containing the ferrum that fe 98.0%, granularity is 250 mesh containing pure aluminum 98.0%, granularity
Powder carries out dispensing according to required alloying component, mix homogeneously under stirring condition, obtains compound；It is computed alloying component in raw material
For (wt%)：Al 55.00%, Fe surplus.
(2) mix homogeneously under 0.5% binding agent stirring condition of alloy gross mass is added, is obtained at the beginning of pelletizing by pelletizing
Compound in step (1) is pressed into the alfer using forcing press by material, and pressure used is 5000KN.
Embodiment 4：
The present embodiment prepares alfer using following techniques：
(1) will be the aluminium powder of 150 mesh and containing the ferrum that fe 99.0%, granularity is 150 mesh containing pure aluminum 96.0%, granularity
Powder carries out dispensing according to required alloying component, mix homogeneously under stirring condition, obtains compound；It is computed alloying component in raw material
For (wt%)：Al 41.51%, Fe surplus.
(2) mix homogeneously under 0.4% binding agent stirring condition of alloy gross mass is added, is obtained at the beginning of pelletizing by pelletizing
Compound in step (1) is pressed into the alfer using forcing press by material, and pressure used is 5000KN.
Carry out elementary analysiss and XRD detections to the alfer prepared by above-described embodiment 1～4, each embodiment chemistry into
Divide as shown in table 1.
Alfer chemical composition (wt%) prepared by 1 embodiment of table
| Al | Si | P | S | Cu | C | Fe | Al2O3 | |
| Embodiment 1 | 35.18 | 0.81 | 0.013 | 0.013 | 0.011 | 0.07 | Surplus | Do not detect |
| Embodiment 2 | 45.35 | 0.79 | 0.009 | 0.012 | 0.010 | 0.09 | Surplus | Do not detect |
| Embodiment 3 | 55.00 | 0.67 | 0.007 | 0.009 | 0.009 | 0.07 | Surplus | Do not detect |
| Embodiment 4 | 41.51 | 0.97 | 0.015 | 0.011 | 0.014 | 0.05 | Surplus | Do not detect |
As shown in Table 1, using the oxidation of alfer pelletizing aluminum prepared by the present invention, in prepared alfer product
Impurity component meets steel mill's end steel-deoxidizing requirement.
Comparative example 1：
Difference from Example 1 is：Manufacturing process using electric furnace melt casting technique, sample be market purchasing (see
1) alfer pelletizing of the present invention and comparative example 1, are respectively used to certain steel mill and smelt Q235A, the whole steel of QQ235B steel grades by accompanying drawing
Deoxidizer.The results showed, the recovery rate of the present invention and contrast product aluminum is respectively 21.38% and 19.67%, illustrates the present invention
Product deoxidation effect is good.The Al of molten steel after deoxidation2O3It is mingled with aspect, the present invention and contrast product are respectively 3.36% and 9.65%,
Good product quality of the present invention is illustrated, not the now oxidation of aluminum.
Comparative example 2：
Difference from Example 1 is：In raw material, aluminium skimmings and steel cuttings distinguish crushing and screening for the equal 5mm of granularity, its aluminum
The purity of purity and steel is 96%, but does not add binding agent to carry out pelletizing.As a result show, bulk cargo occurs in the alloy before forging and stamping
(see accompanying drawing 2), copper reach 0.07%, exceeded.
Claims (6)
1. a kind of alfer pelletizing and preparation method thereof, it is characterised in that：By mass percentage, described alfer
Chemical composition is Al：35.0～55.0%, balance of Fe and a small amount of inevitably impurity.
2. according to claim 1, a kind of alfer pelletizing and preparation method thereof, it is characterised in that：Described alfer
The content of simple substance Al is 35.0～55.0wt%.
3. according to claim 1, a kind of alfer pelletizing and preparation method thereof, it is characterised in that：In described alfer
The chemical Composition Control of impurity exists：Si ＜ 1.20%, P ＜ 0.02%, S ＜ 0.02%, Cu ＜ 0.02%, C ＜ 0.10%.The conjunction
Al in gold2O3Content is zero.
4. according to claim 1, a kind of alfer pelletizing and preparation method thereof, it is characterised in that：Described alfer system
Standby technique is comprised the following steps：
(1) prepared by aluminium powder：With industrial aluminium foil of the aluminium content not less than 96% as aluminum feedstock, aluminum feedstock Jing is broken, wet ball grinding,
Be dried, be sized to it is standby after the aluminium powder that granularity is 150～250 mesh；
(2) prepared by iron powder：With iron scale as raw material, by hydrogen reducing or secondary carbon reduction after again ball milling, be sized to granularity
Standby after iron powder for 150～250 mesh, in iron powder, the content of ferrum is not less than 98%；
(3) gained aluminium powder in step (1) and step (2) and iron powder are carried out into dispensing according to required alloying component, adds alloy total
Mix homogeneously under 0.1～0.7% binding agent stirring condition of quality, is obtained by pelletizing and expect at the beginning of pelletizing；
(4) compound in step (3) is pressed into by the alfer pelletizing product using forcing press.
5. a kind of alfer pelletizing according to claim 4 and preparation method thereof, it is characterised in that：In step (3), institute
To state binding agent be waterglass and aluminate cement according to mass percent 1: (0.5～1.5) carries out mixed preparing and forms.
6. a kind of alfer pelletizing according to claim 4 and preparation method thereof, it is characterised in that：In step (4), institute
Pressure used by forcing press is stated for 3000～5000KN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611093153.0A CN106555027A (en) | 2016-12-01 | 2016-12-01 | A kind of alfer pelletizing and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611093153.0A CN106555027A (en) | 2016-12-01 | 2016-12-01 | A kind of alfer pelletizing and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
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| CN102392180A (en) * | 2011-10-19 | 2012-03-28 | 兰州理工大学 | Ferroaluminium and preparation method thereof |
| CN105018679A (en) * | 2015-08-10 | 2015-11-04 | 本溪冶炼集团有限公司 | Final deoxidizer aluminum iron alloy for steelmaking and pressing preparation method of final deoxidizer aluminum iron alloy |
| 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 |
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2016
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102392180A (en) * | 2011-10-19 | 2012-03-28 | 兰州理工大学 | Ferroaluminium and preparation method thereof |
| CN105018679A (en) * | 2015-08-10 | 2015-11-04 | 本溪冶炼集团有限公司 | Final deoxidizer aluminum iron alloy for steelmaking and pressing preparation method of final deoxidizer aluminum iron alloy |
| 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 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
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