CN1294287C - Nickel molybdenum alloy and preparation method - Google Patents
Nickel molybdenum alloy and preparation method Download PDFInfo
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- CN1294287C CN1294287C CNB2003101061907A CN200310106190A CN1294287C CN 1294287 C CN1294287 C CN 1294287C CN B2003101061907 A CNB2003101061907 A CN B2003101061907A CN 200310106190 A CN200310106190 A CN 200310106190A CN 1294287 C CN1294287 C CN 1294287C
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Abstract
The present invention relates to alloy for smelting steel and a preparation method thereof. The alloy is made from nickel, molybdenum, iron and impurities such as silicon, carbon, phosphorus, sulfur, copper, etc., wherein the content of the nickel is from 9 to 50%, and the content of the molybdenum is from 9 to 40%. The preparation method comprises: flaky graphitic lower-grade nickel-molybdenum sulfide paragenetic ore is purchased, crushed into powder with the granularity of 200 meshes and calcined by a reflecting furnace to obtain the calcined ore containing oxides such as NiO, MoO3, etc.; the calcined ore and a reducing agent are evenly mixed, pressed into balls, and smelted and reduced in a shaft furnace to obtain mixed liquid melt containing granular alloy; the mixed liquid melt containing granular alloy is crushed and enriched to obtain nickel-molybdenum alloy iron granules; the nickel-molybdenum alloy iron granules are melted by an intermediate frequency furnace, added with waste nickel and molybdenum to regulate the elemental composition and cast into the nickel-molybdenum alloy meeting the clients' requirements. The present invention increases the comprehensive utilization value of the lower-grade nickel-molybdenum paragenetic ore, effectively relieves the situation of lack of resources of nickel and molybdenum in the Chinese market at present and effectively reduces the production cost of refined high-grade steel.
Description
Affiliated technical field
The present invention relates to a kind of alloying constituent of making steel usefulness and preparation method thereof.
Background technology
Pipe line steel and JU steel are widely used, when smelting pipe line steel and JU steel, the alloying constituent when mainly using nickel plate and molybdenum-iron as steel-making at present uses pure nickel as alloy addition, exist the waste of resource, because pure nickel need carry out removing of iron, copper in process of production, and in the steel-making to iron without limits, the steel grade that has even also need add an amount of copper, and add nickel and molybdenum at twice, increased blast-furnace man's manipulation strength, the production cost height, labour intensity is big.
Summary of the invention
In order to overcome nickel plate and molybdenum-iron deficiency, the purpose of this invention is to provide a kind of nickel-molybdenum alloy and preparation method thereof as the alloying constituent in when steel-making.
The technical solution adopted for the present invention to solve the technical problems is: a kind of nickel-molybdenum alloy, form by impurity such as nickel, molybdenum, iron and silicon, carbon, phosphorus, sulphur, copper.
Further, for adapting to the needs of various different steel grades, the degree of the each component of nickel-molybdenum alloy can be nickel 9～50; Molybdenum 9～40.
Nickel 19～31; Molybdenum 9～21; Silicon≤3.0; Carbon≤0.1; Phosphorus≤0.05; Sulphur≤0.1 bronze medal≤1.0; Iron surplus.
Nickel 19～21; Molybdenum 9～11; Silicon≤3.0; Carbon≤0.1; Phosphorus≤0.05; Sulphur≤0.1 bronze medal≤1.0; Iron surplus.
Nickel 19～21; Molybdenum 19～21; Silicon≤3.0; Carbon≤0.1; Phosphorus≤0.05; Sulphur≤0.1 bronze medal≤1.0; Iron surplus.
Nickel 29～31; Molybdenum 9～11; Silicon≤3.0; Carbon≤0.1; Phosphorus≤0.05; Sulphur≤0.1 bronze medal≤1.0; Iron surplus.
Nickel 29～31; Molybdenum 19～21; Silicon≤3.0; Carbon≤0.1; Phosphorus≤0.05; Sulphur≤0.1 bronze medal≤1.0; Iron surplus.
The preparation method of nickel-molybdenum alloy, with the raw ore (flake graphite shape low ore grade nickel molybdenum sulphide symbiotic ore) of buying, it is Powdered to be crushed to 200 purposes, by the reverberatory furnace roasting, obtains containing NiO, MoO
3Roasted ore Deng oxide compound, roasted ore and reductive agent are mixed, the compacting balling-up, smelting reducing goes out to contain the mixed melting thing of granular alloy in shaft furnace, obtain the nickel-molybdenum alloy abrasive grit through broken enrichment, with the intermediate frequency furnace fusing, add useless nickel and molybdenum and regulate elementary composition, be cast into the nickel-molybdenum alloy product that meets the requirements of the customers.
The invention has the beneficial effects as follows, improved the comprehensive utilization value of low ore grade nickel molybdenum symbiotic ore, alleviate the pressure of current domestic market nickel, molybdenum resource effectively, simultaneously, reduce alloy and added operation and quantity, improve production efficiency, reduced labour intensity, reduced the production cost of refining high-quality steel effectively.
Embodiment
A kind of preparation method of nickel-molybdenum alloy has following technical process:
A, buying flake graphite shape low ore grade nickel molybdenum sulphide symbiotic ore are crushed to 200 orders;
B, 110Kg powdery raw ore is added reverberatory furnace roasting 4 hours, the sulfide in the raw ore is oxidized to oxide compound, and the sulphur major part removes, and obtains the 100Kg roasted ore;
C, roasted ore and reductive agent are mixed, the compacting balling-up, wherein reductive agent is ferrosilicon powder, aluminium powder, fluorite powder and water glass, the requirement of each component and proportioning are:
Roasted ore: 100Kg
72% ferrosilicon powder: 28Kg
98% aluminium powder: 7Kg
98% fluorite powder: 30Kg
38 ° of water glass: an amount of
D, reduction shaft furnace
Coke and ball are pressed layer in batches, restore the melts that contains the nickel-molybdenum alloy abrasive grit;
E, fragmentation, enrichment
After above-mentioned melts fragmentation, enrichment obtains the nickel-molybdenum alloy abrasive grit, and its Ni content is 18.3%, and Mo is 8.55%;
F, intermediate frequency furnace fusing, casting
After these nickel-molybdenum alloy abrasive grits melt with intermediate frequency furnace, add useless nickel and molybdenum-iron and carry out the composition adjusting, be cast into the nickel-molybdenum alloy piece that meets the requirements of the customers.
According to user's needs, with the content of nickel and molybdenum in useless nickel and the molybdenum-iron adjusting nickel-molybdenum alloy, with the nickel-molybdenum alloy of the inventive method preparation, when the Shanghai Baosteel was on probation, each component was: nickel 19～31; Molybdenum 9～21; Silicon≤3.0; Carbon≤0.1; Phosphorus≤0.05; Sulphur≤0.1 bronze medal≤1.0; Iron surplus.Carry out 60 stove simultaneous tests at Baosteel, can replace pure nickel and ferro-molybdenum, had application value widely.
Claims (7)
1. nickel-molybdenum alloy, it is characterized in that: be made up of impurity such as nickel, molybdenum, iron and silicon, carbon, phosphorus, sulphur, copper, the content of nickel and molybdenum (weight percent %) is: nickel 19～31; Molybdenum 9～21.
2. nickel-molybdenum alloy according to claim 1 is characterized in that the weight percent content (%) of each component is: nickel 19～31; Molybdenum 9～21; Silicon≤3.0; Carbon≤0.1; Phosphorus≤0.05; Sulphur≤0.1; Copper≤1.0; Iron surplus.
3. nickel-molybdenum alloy according to claim 2 is characterized in that: nickel 19～21; Molybdenum 9～11.
4. nickel-molybdenum alloy according to claim 2 is characterized in that: nickel 19～21; Molybdenum 9～21.
5. nickel-molybdenum alloy according to claim 2 is characterized in that: nickel 19～31; Molybdenum 9～11.
6. nickel-molybdenum alloy according to claim 2 is characterized in that: nickel 19～31; Molybdenum 9～21.
7. the preparation method of a nickel-molybdenum alloy is characterized in that having following technical process:
A, buying flake graphite shape low ore grade nickel molybdenum sulphide symbiotic ore are crushed to Powdered;
B, the powdery raw ore is added the reverberatory furnace roasting, obtain containing NiO, MoO
3Roasted ore Deng oxide compound;
C, roasted ore and reductive agent are mixed, the compacting balling-up, reductive agent is ferrosilicon powder, aluminium powder, fluorite powder and water glass;
D, reduction shaft furnace
Coke and ball are pressed layer in batches, restore the melts that contains the nickel-molybdenum alloy abrasive grit;
E, fragmentation, enrichment
After above-mentioned melts fragmentation, enrichment obtains the nickel-molybdenum alloy abrasive grit;
F, intermediate frequency furnace fusing, casting
After these nickel-molybdenum alloy abrasive grits melt with intermediate frequency furnace, add useless nickel and molybdenum-iron and carry out the composition adjusting, be cast into the nickel-molybdenum alloy that meets the requirements of the customers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101061907A CN1294287C (en) | 2003-10-31 | 2003-10-31 | Nickel molybdenum alloy and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101061907A CN1294287C (en) | 2003-10-31 | 2003-10-31 | Nickel molybdenum alloy and preparation method |
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| Publication Number | Publication Date |
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| CN1540021A CN1540021A (en) | 2004-10-27 |
| CN1294287C true CN1294287C (en) | 2007-01-10 |
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| CNB2003101061907A Expired - Fee Related CN1294287C (en) | 2003-10-31 | 2003-10-31 | Nickel molybdenum alloy and preparation method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101775531B (en) * | 2010-04-07 | 2011-06-22 | 朝阳鸿翔冶炼有限公司 | Nickel-molybdenum-copper alloy and preparation method thereof |
| CN104060114B (en) * | 2014-07-02 | 2016-06-15 | 江苏大学 | A kind of method that dynamax directly smelted by low ore grade nickel molybdenum ore |
| CN107739891B (en) * | 2017-10-20 | 2019-11-12 | 宝钛集团有限公司 | A kind of nickel molybdenum intermediate alloy is preparing the application in ErNiCrMo-3 alloy |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078267A (en) * | 1992-04-02 | 1993-11-10 | 克鲁普德国联合金属制造有限公司 | Austenitic molybdenum alloy |
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2003
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078267A (en) * | 1992-04-02 | 1993-11-10 | 克鲁普德国联合金属制造有限公司 | Austenitic molybdenum alloy |
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| CN1540021A (en) | 2004-10-27 |
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Granted publication date: 20070110 Termination date: 20211031 |