CN108385009A - A kind of preparation method of ferrochrome molybdenum alloy - Google Patents
A kind of preparation method of ferrochrome molybdenum alloy Download PDFInfo
- Publication number
- CN108385009A CN108385009A CN201810333532.5A CN201810333532A CN108385009A CN 108385009 A CN108385009 A CN 108385009A CN 201810333532 A CN201810333532 A CN 201810333532A CN 108385009 A CN108385009 A CN 108385009A
- Authority
- CN
- China
- Prior art keywords
- high temperature
- pelletizing
- molybdenum
- temperature reduction
- ferrochrome
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Classifications
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- 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
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/06—Alloys based on chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
Abstract
The present invention relates to a kind of preparation methods of ferrochrome molybdenum alloy, including step (1)：The molybdenum ore of sulfur-bearing, cobalt is subjected to levigate processing；Step (2)：The molybdenum ore after will be levigate is uniformly mixed with chromite powder, reinforcing agent, is added water to carry out pressure ball molding and is handled to obtain pelletizing, processing is dried in the pelletizing；Step (3)：The pelletizing after drying is equably put into rotary hearth furnace and carries out high temperature reduction, obtains metallized pellet；Step (4)：The metallized pellet is ground again, full analysis agent is then added, carries out high temperature reduction again, high temperature melting separation obtains ferrochrome molybdenum alloy.
Description
Technical field
The invention belongs to technical field of alloy material more particularly to a kind of preparation methods of ferrochrome molybdenum alloy.
Background technology
The structure of phase is formed in alloy and property plays conclusive simultaneously to the performance of alloy, the change of alloy structure
Change relative populations, the grain size of each phase of phase in i.e. alloy, the variation of shape and distribution also occurs the performance of alloy very big
Influence.Therefore, using the combination of various elements to form a variety of different alloy phases, may meet using suitable processing
A variety of different performance requirements.
Alloy element of the molybdenum as steel, can improve the intensity of steel, especially elevated temperature strength and toughness；Steel is improved in acid
Corrosion stability in aqueous slkali and liquid metal；It improves the wearability of steel and improves quenching degree, weldability and heat resistance.Molybdenum is a kind of
The good element for forming carbide, does not aoxidize, can be used alone also can be common with other alloying elements during steel-making
It uses.The consumption molybdenum amount of special steel is regularly increasing, and the molybdenum consumption of current special steel per ton has reached 0.201 kilogram of water
It is flat.
Currently, alloying element is mainly to be added by adding the form of ferroalloy or metal simple-substance in steel alloy smelting process
Molten steel, but ferroalloy smelting process has the characteristics that high energy consumption, environmental pollution are serious, and exploitation does not use ferroalloy or few use
The steel alloy smelting process of ferroalloy is of great significance.Therefore, industry gradually proposes direct for high carbon ferro-chrome molybdenum oxide
Alloying technology adds molybdenum oxide ball that is, into the high carbon ferro-chrome iron liquid of melting, while reducing agent and slag making smelting is added, and realizes
Molybdenum oxide is reduced directly and alloying, finally obtains carbon Chromium molybdenum iron alloy product, by the products application in the smelting of steel alloy,
Not only the process that production molybdenum-iron can be saved, but also addition alloying element cost can be reduced, shorten smelting cycle, can also solve in addition
The problem that molybdenum element addition sedimentation is difficult in steelmaking process, volatilization is big.
But be not mature enough at present with the technology of molybdenum oxide DIRECT ALLOYING for high carbon ferro-chrome, in the industry still to reality
During existing scheme is explored, the common problem of existing program is production cost height.
Invention content
The present invention provides a kind of preparation methods of ferrochrome molybdenum alloy, include the following steps：
Step (1)：The molybdenum ore of sulfur-bearing, cobalt is subjected to levigate processing；
Step (2)：The molybdenum ore after will be levigate is uniformly mixed with chromite powder, reinforcing agent, add water carry out pressure ball at
Type handles to obtain pelletizing, and processing is dried in the pelletizing；
Step (3)：The pelletizing after drying is equably put into rotary hearth furnace and carries out high temperature reduction, obtains metallization ball
Group；
Step (4)：The metallized pellet is ground again, full analysis agent is then added, carries out high temperature reduction, high temperature again
Fusing separation, obtains ferrochrome molybdenum alloy.
According to an aspect of the present invention, in step (2), the mass ratio of the molybdenum ore and chromite powder is 1:44~1:
46, the mass ratio of the molybdenum ore and reinforcing agent is 1:0.1~1:2.
According to another aspect of the present invention, in step (3), the time of high temperature reduction is 60~120 minutes.
According to another aspect of the present invention, in step (4), the time of high temperature reduction is 20~40 minutes.
According to another aspect of the present invention, in step (3) or step (4), the temperature of high temperature reduction is 1600~2000
Degree Celsius.
According to another aspect of the present invention, the reinforcing agent includes WC, Cr3C2And Fe3At least one of Al.
According to another aspect of the present invention, the granularity of the reinforcing agent is 5-20 nanometers.
According to another aspect of the present invention, the full analysis agent includes at least：One kind in ether, ketone, organic acid.
The present invention, using the shaping characteristic that is easy to of molybdenum ore, is reduced and is bonded by way of chromite and molybdenum ore mixed ingredients
The addition of agent, will be cheap and be not easy molding ferrochrome fine ore and be molded, and reduces production cost；Whole raw materials pass through in advance
Mixing is crossed, dispensing is more uniform, shortens the heat；Pelletizing passes through high temperature prereduction in rotary hearth furnace, effectively reduces electric furnace smelting
Refine power consumption；Simultaneously because the introducing of molybdenum ore, obtains the ferrochrome containing molybdenum, the low cost of smelting stainless steel is further obtained
Raw material.
Specific implementation mode
A kind of preparation method of ferrochrome molybdenum alloy, includes the following steps：
Step (1)：The molybdenum ore of sulfur-bearing, cobalt is subjected to levigate processing；
Step (2)：The molybdenum ore after will be levigate is uniformly mixed with chromite powder, reinforcing agent, add water carry out pressure ball at
Type handles to obtain pelletizing, and processing is dried in the pelletizing；
Step (3)：The pelletizing after drying is equably put into rotary hearth furnace and carries out high temperature reduction, obtains metallization ball
Group；
Step (4)：The metallized pellet is ground again, full analysis agent is then added, carries out high temperature reduction, high temperature again
Fusing separation, obtains ferrochrome molybdenum alloy.
Preferably, in step (2), the mass ratio of molybdenum ore and chromite powder is 1:44~1:46, molybdenum ore with enhancing
The mass ratio of agent is 1:0.1~1:2.Further, the mass ratio of molybdenum ore and chromite powder is 1:45, molybdenum ore and reinforcing agent
Mass ratio be 1:1.
Preferably, in step (3), the time of high temperature reduction is 60~120 minutes.Further, high temperature reduction when
Between be 60 minutes.
Preferably, in step (4), the time of high temperature reduction is 20~40 minutes.Further, the time of high temperature reduction
It is 30 minutes.
Preferably, in step (3) or step (4), the temperature of high temperature reduction is 1600~2000 degrees Celsius.Further
The temperature on ground, high temperature reduction is 1800 degrees Celsius.
Specifically, reinforcing agent includes WC, Cr3C2And Fe3At least one of Al.
Further, the granularity of the reinforcing agent is 5-20 nanometers.
Specifically, analysis agent includes at least entirely：One kind in ether, ketone, organic acid.
Specific embodiments of the present invention are given below.
Embodiment one, step (1)：Molybdenite is subjected to levigate processing；Step (2)：Molybdenite after will be levigate and ferrochrome
Miberal powder, the reinforcing agent that granularity is 5 nanometers：Cr3C2According to 1:44:1 quality proportion uniformly mixes, and water is added to carry out at pressure ball molding
Reason obtains pelletizing, and processing is dried in the pelletizing；Step (3)：The pelletizing after drying is equably put into rotary hearth furnace
In at 1600 degrees Celsius carry out high temperature reduction, 60 minutes recovery times, obtain metallized pellet；Step (4)：By the metallization
Pelletizing is ground again, and full analysis agent is then added：Ketone carries out high temperature reduction, 20 minutes recovery times again, and high temperature melting detaches,
Obtain ferrochrome molybdenum alloy.
Embodiment two, step (1)：Molybdenite is subjected to levigate processing；Step (2)：Molybdenite after will be levigate and ferrochrome
Miberal powder, the reinforcing agent that granularity is 15 nanometers：Fe3Al is according to 1:45:0.1 quality proportion uniformly mixes, add water carry out pressure ball at
Type handles to obtain pelletizing, and processing is dried in the pelletizing；Step (3)：The pelletizing after drying is equably put into and is turned
High temperature reduction is carried out in the stove of bottom at 1800 degrees Celsius, 80 minutes recovery times, obtains metallized pellet；Step (4)：By the gold
Belong to pellet to grind again, full analysis agent is then added：Organic acid carries out high temperature reduction, 30 minutes recovery times, high temperature melting again
Change separation, obtains ferrochrome molybdenum alloy.
Embodiment three, step (1)：Molybdenite is subjected to levigate processing；Step (2)：Molybdenite after will be levigate and ferrochrome
Miberal powder, the reinforcing agent that granularity is 20 nanometers：WC is according to 1:46:2 quality proportion uniformly mixes, and water is added to carry out pressure ball molding processing
Pelletizing is obtained, processing is dried in the pelletizing；Step (3)：The pelletizing after drying is equably put into rotary hearth furnace
High temperature reduction is carried out at 2000 degrees Celsius, 120 minutes recovery times, obtains metallized pellet；Step (4)：By the metallization
Pelletizing is ground again, and full analysis agent is then added：Ether carries out high temperature reduction, 40 minutes recovery times again, and high temperature melting detaches,
Obtain ferrochrome molybdenum alloy.
By above-mentioned technological process, ferrochrome molybdenum alloy Cr is madeaFebMocCodSe, a+b+c+d+e=100, each component quality
Accounting：A is 40~55, b be 30~45, c be 1~10, d be 1~10, e is 1~2.The alloy has fabulous wearability same
When good creep resistant, good high temperature corrosion and good machinability.
The present invention, using the shaping characteristic that is easy to of molybdenum ore, is reduced and is bonded by way of chromite and molybdenum ore mixed ingredients
The addition of agent, will be cheap and be not easy molding ferrochrome fine ore and be molded, and reduces production cost；Whole raw materials pass through in advance
Mixing is crossed, dispensing is more uniform, shortens the heat；Pelletizing passes through high temperature prereduction in rotary hearth furnace, effectively reduces electric furnace smelting
Refine power consumption；Simultaneously because the introducing of molybdenum ore, obtains the ferrochrome containing molybdenum, the low cost of smelting stainless steel is further obtained
Raw material.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (8)
1. a kind of preparation method of ferrochrome molybdenum alloy, which is characterized in that including：
Step (1)：The molybdenum ore of sulfur-bearing, cobalt is subjected to levigate processing；
Step (2)：The molybdenum ore after will be levigate is uniformly mixed with chromite powder, reinforcing agent, and water is added to carry out at pressure ball molding
Reason obtains pelletizing, and processing is dried in the pelletizing；
Step (3)：The pelletizing after drying is equably put into rotary hearth furnace and carries out high temperature reduction, obtains metallized pellet；
Step (4)：The metallized pellet is ground again, full analysis agent is then added, carries out high temperature reduction, high temperature melting again
Separation, obtains ferrochrome molybdenum alloy.
2. the method as described in claim 1, which is characterized in that in step (2), the quality of the molybdenum ore and chromite powder
Than being 1:44~1:46, the mass ratio of the molybdenum ore and reinforcing agent is 1:0.1~1:2.
3. the method as described in claim 1, which is characterized in that in step (3), the time of high temperature reduction is 60~120 points
Clock.
4. the method as described in claim 1, which is characterized in that in step (4), the time of high temperature reduction is 20~40 points
Clock.
5. the method as described in claim 1, which is characterized in that in step (3) or step (4), the temperature of high temperature reduction is
1600~2000 degrees Celsius.
6. the method as described in claim 1, which is characterized in that the reinforcing agent includes WC, Cr3C2And Fe3In Al at least
It is a kind of.
7. the method as described in claim 1, which is characterized in that the granularity of the reinforcing agent is 5-20 nanometers.
8. the method as described in claim 1, which is characterized in that the full analysis agent includes at least：One in ether, ketone, organic acid
Kind.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810333532.5A CN108385009A (en) | 2018-04-13 | 2018-04-13 | A kind of preparation method of ferrochrome molybdenum alloy |
| PCT/CN2018/109572 WO2019196363A1 (en) | 2018-04-13 | 2018-10-10 | Method for preparing chromium-iron-molybdenum alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810333532.5A CN108385009A (en) | 2018-04-13 | 2018-04-13 | A kind of preparation method of ferrochrome molybdenum alloy |
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|---|---|
| CN108385009A true CN108385009A (en) | 2018-08-10 |
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| CN201810333532.5A Pending CN108385009A (en) | 2018-04-13 | 2018-04-13 | A kind of preparation method of ferrochrome molybdenum alloy |
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| WO (1) | WO2019196363A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019196363A1 (en) * | 2018-04-13 | 2019-10-17 | 盐城市鑫洋电热材料有限公司 | Method for preparing chromium-iron-molybdenum alloy |
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| CN103667690A (en) * | 2013-12-16 | 2014-03-26 | 江苏大学 | Chrome-molybdenum metal self reduction pellet and preparation and direct steel liquid alloying methods thereof |
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| CN103343276B (en) * | 2013-06-03 | 2016-01-20 | 江苏大学 | A kind of Chromium molybdenum iron alloy and preparation method thereof |
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| CN108385009A (en) * | 2018-04-13 | 2018-08-10 | 盐城市鑫洋电热材料有限公司 | A kind of preparation method of ferrochrome molybdenum alloy |
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2018
- 2018-04-13 CN CN201810333532.5A patent/CN108385009A/en active Pending
- 2018-10-10 WO PCT/CN2018/109572 patent/WO2019196363A1/en active Application Filing
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| CN103667690A (en) * | 2013-12-16 | 2014-03-26 | 江苏大学 | Chrome-molybdenum metal self reduction pellet and preparation and direct steel liquid alloying methods thereof |
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| CN105908061A (en) * | 2016-06-12 | 2016-08-31 | 江苏省冶金设计院有限公司 | Method for producing high-carbon ferrochrome |
| CN107190139A (en) * | 2017-05-31 | 2017-09-22 | 江苏省冶金设计院有限公司 | A kind of method of Ni and Cr contained ferroalloy smelting |
Non-Patent Citations (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019196363A1 (en) * | 2018-04-13 | 2019-10-17 | 盐城市鑫洋电热材料有限公司 | Method for preparing chromium-iron-molybdenum alloy |
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Application publication date: 20180810 |