CN107739776A - Calcium aluminium composite deoxidant - Google Patents
Calcium aluminium composite deoxidant Download PDFInfo
- Publication number
- CN107739776A CN107739776A CN201710848752.7A CN201710848752A CN107739776A CN 107739776 A CN107739776 A CN 107739776A CN 201710848752 A CN201710848752 A CN 201710848752A CN 107739776 A CN107739776 A CN 107739776A
- Authority
- CN
- China
- Prior art keywords
- composite deoxidant
- aluminium
- magnesium
- aluminium composite
- lime
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
Calcium aluminium composite deoxidant is related to a kind of to deoxidation of molten steel, the calcium aluminium composite deoxidant of desulfurization.Mainly add it in molten steel and can burn to solve existing calcium aluminium composite deoxidant, produce pernicious gas and dust, develop the problem of desulfurization, deoxidation effect difference.Aluminium scrap ash is well mixed with lime and magnesium, is sent in electric furnace and smelts, smelting temperature is 1500 DEG C, melting, is cooled to room temperature, and liquid is solidified, and a diameter of ㎜ of 10 ㎜ -40 granule is crushed to disintegrating machine；Aluminium scrap ash, lime, the weight ratio of magnesium are：38—48:45—55：4—7.Advantage is energy rapid slagging, sloughs harmful dregs such as oxygen, sulphur, shortens the heat, and reduces power consumption, does not produce pernicious gas, reduce the pollution to environment.
Description
Technical field：
The present invention relates to a kind of to deoxidation of molten steel, the calcium aluminium composite deoxidant of desulfurization.
Background technology：
The production method of existing calcium aluminium composite deoxidant has two kinds, and one kind is that aluminium ash and lime are pressed into spherical, drying, making
Process contamination is big, can be burnt after adding it in molten steel, produces pernicious gas and dust, pollutes environment.Another kind is to aluminium
Ash and lime injection coal gas are fired and formed, and it is disadvantageous in that proportion is small, swims in molten steel surface, is not connect with the molten steel of bottom
Touch, desulfurization, deoxidation effect are poor, take off unnet.
The content of the invention：
It is small that the technical problems to be solved by the invention are to provide a kind of environmental pollution, can sink to molten steel bottom and be connect completely with molten steel
Touch, the good calcium aluminium composite deoxidant of desulfurization, deoxidation effect.
What above-mentioned purpose was realized in：Aluminium scrap ash and lime and magnesium are well mixed, is sent in electric furnace and smelts, is smelted
Temperature is 1500 DEG C, melting, is cooled to room temperature, liquid solidification, the small of a diameter of ㎜ of 10 ㎜ -40 is crushed to disintegrating machine
Grain；
Described aluminium scrap ash, lime, the weight ratio of magnesium are：38—48:45—55：4—7.
Obtained granule is put into converter or ladle, input amount is：Every 18 tons of molten steel add 300 kilograms.
It is an advantage of the invention that：Product can sink to molten steel bottom, dissolve than great, in floating-upward process, aluminium therein and
Calcium can make the oxide in steel be changed into the oxide that low melting point is easy to float, and purified molten steel, reduced steel inclusion, reduced
Gas in steel, improve the mobility of molten steel well, improve separation and recovery rate, reduce the consumption of alloy, stablize chemical composition,
Adapt to the needs of continuous casting steel.Its energy rapid slagging, sloughs harmful dregs such as oxygen, sulphur, shortens the heat, reduce power consumption, do not produce
Raw pernicious gas, reduces the pollution to environment.
Embodiment：
Aluminium scrap ash and lime and magnesium are well mixed, is sent in electric furnace and smelts, smelting temperature is 1500 DEG C, melting, is cooled to
Room temperature, liquid are solidified, and a diameter of ㎜ of 10 ㎜ -40 granule is crushed to disintegrating machine；
Described aluminium scrap ash, lime, the weight ratio of magnesium are：38—48:45—55：4—7.
Obtained granule is put into converter or ladle, input amount is：Every 18 tons of molten steel add 300 kilograms.
Embodiment 1：
38 ㎏ aluminium scraps ash, 45 ㎏ limes and 4 ㎏ magnesium are well mixed, is sent in electric furnace and smelts, smelting temperature is 1500 DEG C, is melted
Melt, be cooled to room temperature, liquid is solidified, and a diameter of 10 ㎜ granule is crushed to disintegrating machine.
Embodiment 2：
43 ㎏ aluminium scraps ash, 50 ㎏ limes and 6 ㎏ magnesium are well mixed, is sent in electric furnace and smelts, smelting temperature is 1500 DEG C, is melted
Melt, be cooled to room temperature, liquid is solidified, and a diameter of 25 ㎜ granule is crushed to disintegrating machine.
Embodiment 3：
48 ㎏ aluminium scraps ash, 55 ㎏ limes and 7 ㎏ magnesium are well mixed, is sent in electric furnace and smelts, smelting temperature is 1500 DEG C, is melted
Melt, be cooled to room temperature, liquid is solidified, and a diameter of 40 ㎜ granule is crushed to disintegrating machine.
6 electric furnaces are chosen, wherein 3 electric furnaces are with existing aluminium calcium composite deoxidant, heat (batch) number：13668/13694/
13695；
The aluminium calcium composite deoxidant that 3 electric furnaces are produced with the method according to the present invention, heat (batch) number are：13666、13667、13825.
13666 be aluminium calcium composite deoxidant that embodiment 1 obtains；13667 be aluminium calcium complex deoxidization that embodiment 2 obtains
Agent；13825 be aluminium calcium composite deoxidant that embodiment 3 obtains.
Result of the test is as follows：
1st, desulfurization degree and slag condition：
As can be seen that it is higher than the desulfurization degree of existing product with the desulfurization degree of the aluminium calcium composite deoxidant of the present invention, it is white without adding
Ash, slagging effect are good.
2nd, refining slag sample ingredient：
In terms of slag specimen composition, Al203 contents ratio improves 2-4 percentage points with existing product in clinker.Slagging effect is also superior to existing
There is product.
Claims (2)
1. calcium aluminium composite deoxidant, it is characterized in that：Aluminium scrap ash and lime and magnesium are well mixed, is sent in electric furnace and smelts, smelting
It is 1500 DEG C to refine temperature, melting, is cooled to room temperature, liquid solidification, is crushed to a diameter of ㎜'s of 10 ㎜ -40 with disintegrating machine
Granule.
2. according to the calcium aluminium composite deoxidant described in claim 1, it is characterized in that：Described aluminium scrap ash, lime, the weight ratio of magnesium
For：38—48:45—55：4—7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710848752.7A CN107739776A (en) | 2017-09-20 | 2017-09-20 | Calcium aluminium composite deoxidant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710848752.7A CN107739776A (en) | 2017-09-20 | 2017-09-20 | Calcium aluminium composite deoxidant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107739776A true CN107739776A (en) | 2018-02-27 |
Family
ID=61236121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710848752.7A Pending CN107739776A (en) | 2017-09-20 | 2017-09-20 | Calcium aluminium composite deoxidant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107739776A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111471829A (en) * | 2020-04-09 | 2020-07-31 | 肖卫学 | Preparation method of high-calcium aluminum alloy and high-calcium aluminum alloy |
| CN114798682A (en) * | 2022-06-02 | 2022-07-29 | 包头市穗海炉料有限公司 | Calcium-aluminium desulfurization deoxidant mould material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102321784A (en) * | 2011-08-22 | 2012-01-18 | 辽宁天和科技股份有限公司 | Pre-molten conductive slag for electrochemical deoxidation and preparation method thereof |
| CN103243197A (en) * | 2013-05-13 | 2013-08-14 | 涟源市飞达冶金炉料厂 | Novel direct continuous casting slag washing mixed material and preparation process thereof |
| CN103451367A (en) * | 2013-09-06 | 2013-12-18 | 鞍钢股份有限公司 | Pre-melting conductive slag for electrochemical deoxygenation and preparation method thereof |
-
2017
- 2017-09-20 CN CN201710848752.7A patent/CN107739776A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102321784A (en) * | 2011-08-22 | 2012-01-18 | 辽宁天和科技股份有限公司 | Pre-molten conductive slag for electrochemical deoxidation and preparation method thereof |
| CN103243197A (en) * | 2013-05-13 | 2013-08-14 | 涟源市飞达冶金炉料厂 | Novel direct continuous casting slag washing mixed material and preparation process thereof |
| CN103451367A (en) * | 2013-09-06 | 2013-12-18 | 鞍钢股份有限公司 | Pre-melting conductive slag for electrochemical deoxygenation and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111471829A (en) * | 2020-04-09 | 2020-07-31 | 肖卫学 | Preparation method of high-calcium aluminum alloy and high-calcium aluminum alloy |
| CN114798682A (en) * | 2022-06-02 | 2022-07-29 | 包头市穗海炉料有限公司 | Calcium-aluminium desulfurization deoxidant mould material and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180227 |