CN102534273A - Process for smelting ferromolybdenum through silico-aluminum thermic method - Google Patents
Process for smelting ferromolybdenum through silico-aluminum thermic method Download PDFInfo
- Publication number
- CN102534273A CN102534273A CN2012100000479A CN201210000047A CN102534273A CN 102534273 A CN102534273 A CN 102534273A CN 2012100000479 A CN2012100000479 A CN 2012100000479A CN 201210000047 A CN201210000047 A CN 201210000047A CN 102534273 A CN102534273 A CN 102534273A
- Authority
- CN
- China
- Prior art keywords
- lime
- molybdenum
- iron
- smelting
- ferrosilicon powder
- 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
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a process for smelting ferromolybdenum through a silico-aluminum thermic method. The method comprises the following process steps of: mixing materials; igniting; reacting; standing; discharging slag and cooling, wherein furnace charge constituents mixed at the material mixing stage comprise molybdenum calcine, ferrosilicon powder, aluminum particles, iron oxide skin, lime and steel scrap; and in terms of smelting 100 kg of raw material molybdenum calcine, the furnace charge comprises the following components in parts by weight: 30-40 kg of ferrosilicon powder, 2-6 kg of aluminum particles, 30-40 kg of iron oxide skin, 5-8 kg of lime and 15-25 kg of steel scrap. According to the invention, the furnace slag melting point and viscosity are reduced by completely substituting fluorite with lime as an alkaline solvent; fluorine pollution is completely avoided; environmental protection is facilitated; the lime is dissolved in a smelting system to absorb heat; the smelting heat balance is optimized; the reaction is stably performed; the viscosity of molten slag is completely improved; slag-iron separation is good; and the recovery rate can be increased.
Description
Technical field
The invention belongs to molybdenum-iron smelting technology technical field, relate in particular to a kind of silicothermic process and smelt molybdenum-iron technology.
Background technology
At present, the smelting production of molybdenum-iron, what generally use is " silicothermic process smelting technology "; It adopts silicon, aluminium (also using magnesium sometimes) to make reductive agent, and reducing metal oxide is in the smelting; Usually do not need heat supply again or heat supply few, the heat that mainly relies on the furnace charge id reaction to discharge is produced molybdenum; When using silicothermic process to smelt molybdenum-iron, metal and slag form simultaneously, and the layering owing to the density difference.Because the natural response time in smelting is short; The temperature of melt descends very fast; Slag must have bigger flowability, and clipped wire is sneaked into slag in just avoiding smelting, and fully separates with slag for guaranteeing molybdenum-iron; Reduce the fusing point and the viscosity of slag as possible, in furnace charge, add a part of fluorite usually and (mainly contain CaF
2) reducing slag melting and viscosity, the Charging stock recipe (Kg) that adopts like some enterprises of China: molybdenum calcining 300 (containing molybdenum 48%～51%), iron scale 70～80, steel cuttings 80～95, ferrosilicon (siliceous 75%) 80～95, aluminum shot 16～21, fluorite (mainly contain CaF
2) 10～20, nitre 10～15; More external enterprises add some fluorites usually simultaneously and (mainly contain CaF in furnace charge
2) and lime, like Charging stock recipe (Kg): molybdenum calcining 100 (heavily), iron ore 18 (iron content＞55%), steel cuttings 23, aluminum shot 3.7～5, ferrosilicon (siliceous 75%) 30, lime 3, fluorite (CaF in the concentrated molybdenum ore that contains molybdenum 51%
2＞90%, SiO
2＜5%) 3.Thus, no matter be domestic or external, in the furnace charge of smelting molybdenum-iron, all adding has fluorite (mainly to contain CaF
2), still, use fluorite (mainly to contain CaF
2) have some unavoidable problem during as slag former: 1) smelt reaction violent, be prone to bring out the spray stove, flue dust leaks; 2) mechanical loss that viscosity coefficient of dross increases, alloying pellet is carried secretly strengthens, slag iron separating size is poor, has increased the stove rate of returning of molybdenum-iron finishing, thereby reduces the comprehensive recovery of smelting; 3) the Calcium Fluoride (Fluorspan) price is high, and production cost increases; 4) silicon tetrafluoride that generates in the smelting reaction process is after drip washing, and deliquescence generates white cigarette, is prone to cause " fluorine " secondary environmental pollution.
Present stage, smelt under the production environmental protection situation strict gradually at molybdenum-iron the fluorine emission request, in order to improve the quality of production of molybdenum-iron, guarantee the recovery of molybdenum, the Calcium Fluoride (Fluorspan) that needs to be resolved hurrily uses the problems that produce in molybdenum-iron is smelted.
Summary of the invention
For addressing the above problem; The purpose of this invention is to provide a kind of silicothermic process and smelt molybdenum-iron technology; Utilize employing lime to replace fluorite fully and reduce slag melting and viscosity as solvent as alkalescence; Thoroughly avoided " fluorine " to pollute, and lime is common raw materials cheap, that be easy to purchase, can reduces starting material and production run cost.
In order to realize the foregoing invention purpose, the present invention adopts following technical scheme:
A kind of silicothermic process is smelted molybdenum-iron technology, and its process step comprises batch mixing, igniting, reaction, calmness, slagging and cooling, and institute's blended charge composition is in the batch mixing stage: molybdenum calcining, ferrosilicon powder, aluminum shot, iron scale, lime, steel cuttings; Calculate according to smelting 100Kg raw material molybdenum calcining; Furnace charge each component and parts by weight thereof are: ferrosilicon powder 30～40Kg, aluminum shot 2～6Kg, iron scale 30～40Kg; Lime 5～8Kg, steel cuttings 15～25Kg.
Further, furnace charge each component and parts by weight thereof are: ferrosilicon powder 33～38Kg, aluminum shot 4～6Kg, iron scale 32～37Kg, lime 6～8Kg, steel cuttings 15～25Kg.
Further, furnace charge each component and parts by weight thereof are: ferrosilicon powder 35～37Kg, aluminum shot 4～6Kg, iron scale 35～37Kg, lime 6～8Kg, steel cuttings 15～25Kg.
Preferably, the granularity≤0.5mm of described ferrosilicon powder, phosphorus, sulphur content all are lower than 0.05%, and the ratio of granularity and molybdenum calcining granularity is less than 1: (1～1.7).
Preferably, the content of the CaO in the described lime>=95%, phosphorus, sulphur impurity are lower than 0.05%, and the granularity≤0.2mm of lime.
Because adopt technique scheme, the present invention has following meliority:
This silicothermic process is smelted molybdenum-iron technology, adopts lime to replace fluorite fully and reduces slag melting and viscosity with alkalescence as solvent, has thoroughly avoided " fluorine " to pollute, and helps environmental protection; And lime dissolves in the smelting system and absorbs heat, optimizes and smelts thermal equilibrium, and reacting balance is carried out; Thoroughly improve viscosity coefficient of dross, slag iron separates good, can improve the recovery; Simultaneously, because lime is common raw materials cheap, that be easy to purchase, starting material and production run cost have therefore been reduced.In addition, lime belongs to the basic oxide sludging flux, can remove part sulphur, phosphorus impurities in the product better, improves the molybdenum-iron grade.Solvable molybdenum rate is higher than 75% in guaranteeing the molybdenum calcining, and other auxiliary raw materials for metallurgy quality are uniform and stable, and it is feasible fully as molybdenum-iron smelting slag making solvent that lime replaces fluorite.
Embodiment
A kind of silicothermic process is smelted molybdenum-iron technology, and its process step comprises batch mixing, igniting, reaction, calmness, slagging and cooling, and institute's blended charge composition is in the batch mixing stage: molybdenum calcining, ferrosilicon powder, aluminum shot, iron scale, lime; Calculate according to smelting 100Kg raw material molybdenum calcining; Furnace charge each component and parts by weight thereof are: ferrosilicon powder 30～40Kg, aluminum shot 2～6Kg, iron scale 30～40Kg; Lime 5～8Kg, steel cuttings 15～25Kg.
Further, furnace charge each component and parts by weight thereof are: ferrosilicon powder 35～37Kg, aluminum shot 4～6Kg, iron scale 35～37Kg, lime 6～8Kg, steel cuttings 15～25Kg.
Preferably, the granularity≤0.5mm of described ferrosilicon powder, phosphorus, sulphur content all are lower than 0.05%, and the ratio of granularity and molybdenum calcining granularity is less than 1: (1～1.7).
Preferably, the content of the CaO in the described lime>=95%, phosphorus, sulphur impurity are lower than 0.05%, and the granularity≤0.2mm of lime.
Embodiment 1, calculates according to smelting 100Kg raw material molybdenum calcining, and furnace charge each component and parts by weight thereof are: ferrosilicon powder 33Kg, aluminum shot 4Kg, iron scale 30Kg, lime 8Kg, steel cuttings 20Kg.
Embodiment 2, calculate according to smelting 100Kg raw material molybdenum calcining, and furnace charge each component and parts by weight thereof are: ferrosilicon powder 35Kg, aluminum shot 4Kg, iron scale 35Kg, lime 8Kg, steel cuttings 18Kg.
Embodiment 3, calculate according to smelting 100Kg raw material molybdenum calcining, and furnace charge each component and parts by weight thereof are: ferrosilicon powder 40Kg, aluminum shot 6Kg, iron scale 40Kg, lime 8Kg, steel cuttings 15.5Kg.
Claims (5)
1. a silicothermic process is smelted molybdenum-iron technology, and its process step comprises batch mixing, igniting, reaction, calmness, slagging and cooling, it is characterized in that: institute's blended charge composition is in the batch mixing stage: molybdenum calcining, ferrosilicon powder, aluminum shot, iron scale, lime, steel cuttings; Calculate according to smelting 100Kg raw material molybdenum calcining; Furnace charge each component and parts by weight thereof are: ferrosilicon powder 30～40Kg, aluminum shot 2～6Kg, iron scale 30～40Kg; Lime 5～8Kg, steel cuttings 15～25Kg.
2. silicothermic process according to claim 1 is smelted molybdenum-iron technology, and it is characterized in that: furnace charge each component and parts by weight thereof are: ferrosilicon powder 33～38Kg, aluminum shot 4～6Kg, iron scale 32～37Kg, lime 6～8Kg, steel cuttings 15～25Kg.
3. silicothermic process according to claim 1 is smelted molybdenum-iron technology, and it is characterized in that: furnace charge each component and parts by weight thereof are: ferrosilicon powder 35～37Kg, aluminum shot 4～6Kg, iron scale 35～37Kg, lime 6～8Kg, steel cuttings 15～25Kg.
4. granularity≤the 0.5mm of its ferrosilicon powder, phosphorus, sulphur content all are lower than 0.05%, and the ratio of ferrosilicon powder granularity and molybdenum calcining granularity is less than 1: (1～1.7).
5. smelt molybdenum-iron technology according to the described silicothermic process of arbitrary claim in the claim 1 to 3, it is characterized in that: the content of the CaO in its lime>=95%, phosphorus, sulphur impurity all are lower than 0.05%, and the granularity≤0.2mm of lime.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100000479A CN102534273A (en) | 2012-01-01 | 2012-01-01 | Process for smelting ferromolybdenum through silico-aluminum thermic method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100000479A CN102534273A (en) | 2012-01-01 | 2012-01-01 | Process for smelting ferromolybdenum through silico-aluminum thermic method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102534273A true CN102534273A (en) | 2012-07-04 |
Family
ID=46342292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100000479A Pending CN102534273A (en) | 2012-01-01 | 2012-01-01 | Process for smelting ferromolybdenum through silico-aluminum thermic method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102534273A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103695768A (en) * | 2013-12-25 | 2014-04-02 | 嵩县开拓者钼业有限公司 | Tungsten-molybdenum-iron alloy and preparation method for same |
| CN105441667A (en) * | 2014-08-30 | 2016-03-30 | 泰州市安达有色金属有限公司 | Process for producing ferromolybdenum from low grade molybdenum ores through improving melting point of slag |
| CN108441634A (en) * | 2018-03-22 | 2018-08-24 | 辽宁新华龙大有钼业有限公司 | A kind of intelligent high-efficiency distribution that is inexpensive, producing ferro-molybdenum in high yield |
| CN109913743A (en) * | 2019-04-28 | 2019-06-21 | 北京科技大学 | A method of molybdenum-iron is prepared using molybdenum carbide and iron oxide |
| CN111763835A (en) * | 2020-09-03 | 2020-10-13 | 北京利尔高温材料股份有限公司 | Fluorine-free low-nitrogen-sulfur ferromolybdenum smelting raw material, ferromolybdenum green smelting system and ferromolybdenum green smelting method |
| CN116837264A (en) * | 2023-09-01 | 2023-10-03 | 北京利尔高温材料股份有限公司 | High-grade ferromolybdenum alloy and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB184843A (en) * | 1921-04-23 | 1922-08-23 | John Murdoch Skelley | Improvements in the manufacture of ferrotungsten and ferromolybdenum |
| CN87100348A (en) * | 1987-01-19 | 1987-07-29 | 杨家杖子矿务局机电修配厂 | The method for preparing molybdenum-iron from molybdenum ore |
| RU2367694C1 (en) * | 2008-06-24 | 2009-09-20 | Евгений Николаевич Будин | Charge for receiving of molybdenum |
| CN101787449A (en) * | 2010-01-25 | 2010-07-28 | 锦州新华龙钼业股份有限公司 | Method for producing ferromolybdenum through using mixture of molybdenum oxide lump waste materials and molybdenum oxide ammonia leaching residue |
| KR101029368B1 (en) * | 2010-08-26 | 2011-04-13 | 한국지질자원연구원 | Manufacturing method of ferro molybdenum from molybdenite |
| CN102061388A (en) * | 2010-10-12 | 2011-05-18 | 金堆城钼业股份有限公司 | Method for smelting ferromolybdenum by utilizing molybdenum scrap |
-
2012
- 2012-01-01 CN CN2012100000479A patent/CN102534273A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB184843A (en) * | 1921-04-23 | 1922-08-23 | John Murdoch Skelley | Improvements in the manufacture of ferrotungsten and ferromolybdenum |
| CN87100348A (en) * | 1987-01-19 | 1987-07-29 | 杨家杖子矿务局机电修配厂 | The method for preparing molybdenum-iron from molybdenum ore |
| RU2367694C1 (en) * | 2008-06-24 | 2009-09-20 | Евгений Николаевич Будин | Charge for receiving of molybdenum |
| CN101787449A (en) * | 2010-01-25 | 2010-07-28 | 锦州新华龙钼业股份有限公司 | Method for producing ferromolybdenum through using mixture of molybdenum oxide lump waste materials and molybdenum oxide ammonia leaching residue |
| KR101029368B1 (en) * | 2010-08-26 | 2011-04-13 | 한국지질자원연구원 | Manufacturing method of ferro molybdenum from molybdenite |
| CN102061388A (en) * | 2010-10-12 | 2011-05-18 | 金堆城钼业股份有限公司 | Method for smelting ferromolybdenum by utilizing molybdenum scrap |
Non-Patent Citations (3)
| Title |
|---|
| 刘世界等: "《钼矿石选矿技术》", 31 December 1989, article "硅铝热冶炼钼铁的实践", pages: 229-234 * |
| 朱要武: "多膛炉钼焙砂冶炼钼铁生产实践", 《中国钼业》, vol. 35, no. 3, 30 June 2011 (2011-06-30), pages 26 - 29 * |
| 郑红: "简述炉外法冶炼钨铁及钼铁", 《有色冶矿》, vol. 23, no. 4, 31 August 2007 (2007-08-31), pages 46 - 50 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103695768A (en) * | 2013-12-25 | 2014-04-02 | 嵩县开拓者钼业有限公司 | Tungsten-molybdenum-iron alloy and preparation method for same |
| CN105441667A (en) * | 2014-08-30 | 2016-03-30 | 泰州市安达有色金属有限公司 | Process for producing ferromolybdenum from low grade molybdenum ores through improving melting point of slag |
| CN108441634A (en) * | 2018-03-22 | 2018-08-24 | 辽宁新华龙大有钼业有限公司 | A kind of intelligent high-efficiency distribution that is inexpensive, producing ferro-molybdenum in high yield |
| CN108441634B (en) * | 2018-03-22 | 2019-08-13 | 辽宁新华龙大有钼业有限公司 | A kind of intelligent high-efficiency distribution that is inexpensive, producing ferro-molybdenum in high yield |
| CN109913743A (en) * | 2019-04-28 | 2019-06-21 | 北京科技大学 | A method of molybdenum-iron is prepared using molybdenum carbide and iron oxide |
| CN111763835A (en) * | 2020-09-03 | 2020-10-13 | 北京利尔高温材料股份有限公司 | Fluorine-free low-nitrogen-sulfur ferromolybdenum smelting raw material, ferromolybdenum green smelting system and ferromolybdenum green smelting method |
| CN116837264A (en) * | 2023-09-01 | 2023-10-03 | 北京利尔高温材料股份有限公司 | High-grade ferromolybdenum alloy and preparation method thereof |
| CN116837264B (en) * | 2023-09-01 | 2023-11-24 | 北京利尔高温材料股份有限公司 | High-grade ferromolybdenum alloy and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100469932C (en) | V2O5 direct alloying steelmaking technology | |
| CN100485071C (en) | Electric furnace smelting recovery method for chronium-nickel alloy element in stainless steel dedusting ash | |
| CN102534273A (en) | Process for smelting ferromolybdenum through silico-aluminum thermic method | |
| CN100469898C (en) | Alkaline oxygen converter steelmaking slagging fluxing agent and its preparing method and slagging method | |
| CN103397208B (en) | Process for smelting ferro-vanadium through electro-aluminothermic method | |
| CN103045928A (en) | Method for producing ferrovanadium by aluminothermic process | |
| CN103526066B (en) | Continuous process for producing manganese-silicon alloy and slag rich in silicomanganese and producing micro-and low-carbon manganese-silicon alloy by utilization of slag rich in silicomanganese | |
| CN104862441A (en) | Method for separating and recovering iron, vanadium and titanium in vanadium-titanium magnetite | |
| CN102925730A (en) | Production method of vanadium-aluminum (V-Al) alloy | |
| CN112094978A (en) | Converter scrap steel accurate adding method based on scrap steel components and particle sizes | |
| CN104878153A (en) | Converter dephosphorization method for high-phosphorus low-silicon molten iron | |
| CN103276241B (en) | Titanium aluminum silicon alloy material and preparation method thereof | |
| CN103643056B (en) | The smelting process of low carbon ferromanganese | |
| CN104561450B (en) | A kind of boracic H profile steel smelting synthetic slag and preparation method and application | |
| CN100535151C (en) | Production process for smelting ferrovanadium by calcium vanadate | |
| CN102560131B (en) | Premelted refining slag and preparation method thereof | |
| CN102808067B (en) | Refining method for producing low alloy steel by refining and slagging of bauxite in LF (Ladle Furnace) | |
| CN103643094B (en) | The smelting process of high carbon ferromanganese | |
| CN104328278A (en) | Slagging agent produced by high-purity vanadium-aluminium alloy and production method | |
| CN102839252B (en) | Converter slag fluoride-free fusing agents and method for producing the same | |
| CN103627846A (en) | Method for performing direct alloying to molybdenum oxide for steelmaking | |
| CN103205522B (en) | Method for smelting plain carbon steel from semi-steel | |
| CN102071331B (en) | Smelting preparation method of high-purity high-silicon manganese-silicon alloy | |
| CN111154934A (en) | Furnace burden structure ratio for adjusting blast furnace slag MgO | |
| CN102787207B (en) | Fluoride-free slagging flux for electric-arc furnace steelmaking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Gong Yuchuan Inventor after: Ju Chengxin Inventor after: Zheng Chunxiao Inventor after: Zhu Yaowu Inventor after: Cao Xuejun Inventor after: Cui Shuangfei Inventor after: Liu Ling Inventor before: Gong Yuchuan Inventor before: Ju Chengxin Inventor before: Zheng Chunxiao Inventor before: Zhu Yaowu Inventor before: Cao Xuejun Inventor before: Cui Shuangfei Inventor before: Liu Ling |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120704 |
|
| RJ01 | Rejection of invention patent application after publication |