CN102009982A - Producing method for high-purity chromium boride - Google Patents
Producing method for high-purity chromium boride Download PDFInfo
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- CN102009982A CN102009982A CN 201010606506 CN201010606506A CN102009982A CN 102009982 A CN102009982 A CN 102009982A CN 201010606506 CN201010606506 CN 201010606506 CN 201010606506 A CN201010606506 A CN 201010606506A CN 102009982 A CN102009982 A CN 102009982A
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- chromium boride
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Abstract
The invention relates to a producing method for high-purity chromium boride. The preparation method comprises the following steps: mixing 50-55 parts by weight of chromium boride, 35-45 parts by weight of chromium boride and 0-30 parts by weight of carbonic additive, and melting the mixture at 2000-2400DEG C in a vacuum resistance furnace for 4-5 hours to obtain the high-purity chromium boride, wherein the carbonic additive comprises charcoal, graphite, petroleum coke or the any combination of the components. The method provided by the invention has low production cost and is environment-friendly; and the high-purity chromium boride produced by the method in the invention has stable quality and small possibility of volatilization and oxidation.
Description
Technical field
The present invention relates to the production method of boride with high purity chromium.
Background technology
Boride with high purity chromium CrB
2Have stronger toughness, high temperature wear resistant is applied to various fields such as petrochemical complex, ferrous metallurgy, machinofacture, railroad bridge, oil and gas pipes, shipping vehicle, boiler vessel, electric power water conservancy, aerospace, mine construction.At present, what adopted the home and abroad is that this chemical process of self-combustion process is produced boride with high purity chromium, this method is polluted greatly, safety coefficient is little, need the advanced person's of advanced Chemical Manufacture technology and assurance environmental requirement production unit, to improve production cost greatly undoubtedly, moreover according to said method there is unstable product quality in the product of Huo Deing, the shortcoming of volatile oxidation.
Summary of the invention
Technical problem to be solved by this invention is: the production method that the boride with high purity chromium of the low and environmental protection of a kind of production cost is provided.
Technical solution of the present invention is: it is after norbide 50～55 weight parts, chromium metal 35～45 weight parts and carbon-contained additive 0～30 weight part are mixed, made in 4～5 hours by vacuum resistance furnace electrofuse smelting under 2000 ℃-2400 ℃ temperature, described carbon-contained additive is charcoal, graphite, refinery coke or its arbitrary combination.
Technique effect of the present invention is: it has the advantage of the low and environmental protection of production cost, adopts the boride with high purity chromium steady quality of this method processing, not volatile oxidation.
Embodiment
Embodiment one:
The production method of the boride with high purity chromium of present embodiment is after norbide 50～55 weight parts, chromium metal 35～45 weight parts and carbon-contained additive 0～30 weight part are mixed, and smelts by vacuum resistance furnace electrofuse under 2000 ℃-2400 ℃ temperature to make in 4～5 hours.Described carbon-contained additive is charcoal, graphite, refinery coke or its arbitrary combination.
Embodiment two:
The production method of the boride with high purity chromium of present embodiment is with norbide 50～55 weight parts, chromium metal 35～45 weight parts and after charcoal and/or graphite 0～15 weight part mix, and smelts by vacuum resistance furnace electrofuse under 2000 ℃-2400 ℃ temperature to make in 4～5 hours.
Embodiment three:
The production method of the boride with high purity chromium of present embodiment is after norbide 50～55 weight parts, chromium metal 35～45 weight parts and refinery coke 0～30 weight part are mixed, and smelts by vacuum resistance furnace electrofuse under 2000 ℃-2400 ℃ temperature to make in 4～5 hours.
Embodiment four:
The production method of the boride with high purity chromium of present embodiment is with norbide 52 weight parts, chromium metal 40 weight parts and after charcoal and/or graphite 8 weight parts mix, and smelts by vacuum resistance furnace electrofuse under 2000 ℃-2400 ℃ temperature to make in 4.5 hours.
Embodiment five:
The production method of the boride with high purity chromium of present embodiment is with after norbide 50 weight parts and the mixing of chromium metal 35 weight parts, smelts by vacuum resistance furnace electrofuse under 2000 ℃-2400 ℃ temperature to make in 4 hours.
Embodiment six:
The production method of the boride with high purity chromium of present embodiment is with norbide 55 weight parts and chromium metal 45 weight parts, after charcoal and/or graphite 15 parts by weight are mixed, makes in 5 hours by vacuum resistance furnace electrofuse smelting under 2000 ℃-2400 ℃ temperature.
Adopting the boride with high purity chromium of the method for the invention processing is powder shape or bulk, changes domestic traditionally from graceful burning method, adopts electric smelting smelting physical method, and changing domestic tradition is the method for main raw material with high-carbon boron.Present technique adopts with low-carbon (LC) high-quality monomer boron and displacer, and carbon and impurity are replaced, and makes its product boron content reach 15%, chromium content 80%, foreign matter content 5%.Suitable with the like product purity of external production, at present external boride with high purity chromium price be about 650,000 yuans per ton, and its production cost of boride with high purity chromium that uses the inventive method to produce reduces greatly, price only be 560,000 yuans per ton.
Claims (2)
1. the production method of boride with high purity chromium, it is characterized in that, it is after norbide 50～55 weight parts, chromium metal 35～45 weight parts and carbon-contained additive 0～30 weight part are mixed, made in 4～5 hours by vacuum resistance furnace electrofuse smelting under 2000 ℃-2400 ℃ temperature, described carbon-contained additive is charcoal, graphite, refinery coke or its arbitrary combination.
2. want the production method of 1 described boride with high purity chromium as right, it is characterized in that, described carbon-contained additive is charcoal and/or graphite, and its weight part is 0～15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106065069A CN102009982B (en) | 2010-12-27 | 2010-12-27 | Producing method for high-purity chromium boride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106065069A CN102009982B (en) | 2010-12-27 | 2010-12-27 | Producing method for high-purity chromium boride |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102009982A true CN102009982A (en) | 2011-04-13 |
| CN102009982B CN102009982B (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010106065069A Expired - Fee Related CN102009982B (en) | 2010-12-27 | 2010-12-27 | Producing method for high-purity chromium boride |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689907A (en) * | 2012-05-30 | 2012-09-26 | 深圳市新星轻合金材料股份有限公司 | Preparing method and application of transition metal boride |
| CN102745703A (en) * | 2012-07-25 | 2012-10-24 | 深圳市新星轻合金材料股份有限公司 | Process for preparing aluminum electrolysis inert anode material or aluminum electrolysis inert cathode coating material |
| CN103979567A (en) * | 2014-05-22 | 2014-08-13 | 安徽工业大学 | Method for preparing CrB or CrB2 powder at low temperature |
| RU2549440C1 (en) * | 2013-12-17 | 2015-04-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Новосибирский государственный технический университет" | Method of obtaining chrome diboride |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1582264A (en) * | 2001-11-06 | 2005-02-16 | 独立行政法人产业技术总合研究所 | Boron carbide based sintered compact and method for preparation thereof |
-
2010
- 2010-12-27 CN CN2010106065069A patent/CN102009982B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1582264A (en) * | 2001-11-06 | 2005-02-16 | 独立行政法人产业技术总合研究所 | Boron carbide based sintered compact and method for preparation thereof |
Non-Patent Citations (2)
| Title |
|---|
| 《粉末冶金技术》 19980831 孙天康等 自蔓延高温合成CrB2 256－257，245 1－2 第16卷, 第4期 * |
| 《粉末冶金技术》 19980831 孙天康等 自蔓延高温合成CrB2 256－257，245 1－2 第16卷, 第4期 2 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689907A (en) * | 2012-05-30 | 2012-09-26 | 深圳市新星轻合金材料股份有限公司 | Preparing method and application of transition metal boride |
| CN102745703A (en) * | 2012-07-25 | 2012-10-24 | 深圳市新星轻合金材料股份有限公司 | Process for preparing aluminum electrolysis inert anode material or aluminum electrolysis inert cathode coating material |
| RU2549440C1 (en) * | 2013-12-17 | 2015-04-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Новосибирский государственный технический университет" | Method of obtaining chrome diboride |
| CN103979567A (en) * | 2014-05-22 | 2014-08-13 | 安徽工业大学 | Method for preparing CrB or CrB2 powder at low temperature |
| CN103979567B (en) * | 2014-05-22 | 2015-12-30 | 安徽工业大学 | A kind of low-temperature growth CrB or CrB 2the method of powder |
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| Publication number | Publication date |
|---|---|
| CN102009982B (en) | 2012-07-04 |
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