CN101239720A - Method for fast crushing separating extracting tungsten carbide and cobalt carbonate by using waste ultra-fine hard alloy body - Google Patents
Method for fast crushing separating extracting tungsten carbide and cobalt carbonate by using waste ultra-fine hard alloy body Download PDFInfo
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- CN101239720A CN101239720A CNA2008100308267A CN200810030826A CN101239720A CN 101239720 A CN101239720 A CN 101239720A CN A2008100308267 A CNA2008100308267 A CN A2008100308267A CN 200810030826 A CN200810030826 A CN 200810030826A CN 101239720 A CN101239720 A CN 101239720A
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Abstract
The present invention provides a method of quick crashing separating and extracting tungsten carbide and cobalt carbonate utilizing waste superfine cemented carbides engine, characterized in that the method adopts waste superfine cemented carbides engine as basic material, tungsten-carbide powder and cobalt carbonate powder are obtained by breaked, ball milled, baked, then feeding in reaction kettle, blending by adding acid liquor and catalyst, then filter pressed and dried, the invention adopts equipment higher-mode vibration break, cementing phase liquefaction separation and pressing filter treatment, not only enhances productivity effect and capacity, but also effectively removes hazardous element and impurity element, the powder is further thining and extracted, and has a high production activity; the prepared cemented carbides obtains evenly distribution crystal grain, hardness and intensity synchronously enhances under the same process, the performance index exceeds native material product.
Description
Technical field
The present invention relates to a kind of method of utilizing waste ultra-fine hard alloy body fast crushing separating extracting tungsten carbide and cobaltous carbonate, it is the method that the hard alloy scraps manipulation of regeneration is reclaimed.
Background technology
Increase along with tungsten ore exploitation and tungsten consumption, the storage capacity of tungsten is exhausted day by day, use as strategic materials tungsten all has crucial meaning concerning development and national economy and the fully effective utilization of resource, countries in the world all are used as the second valuable resource to useless residual Wimet, it as solving natural resources shortage, is reduced the important means of cost of alloy.Common the having of scrap hard alloy recovery method at present: chlorination process, nitre scorification, mechanical crushing method, the molten method of zinc, the molten method of electrolysis etc.; Because the defective of equipment and processing method, aforesaid method exists or facility investment is big, productive expense energy consumption height or environmental pollution, technical process is long or the hard metal article performance of foreign matter content height, production does not reach the shortcoming of requirement, so aforesaid method all fails to be widely used and utilization and extention.
Summary of the invention
The objective of the invention is at the existing defective of above-mentioned Wimet regeneration treating method, provide that a kind of technology is simple, energy consumption is low, the method for utilizing waste ultra-fine hard alloy body fast crushing separating extracting tungsten carbide and cobaltous carbonate of stable performance and environmental protection.
Technical scheme of the present invention: a kind of method of utilizing waste ultra-fine hard alloy body fast crushing separating extracting tungsten carbide and cobaltous carbonate, it is characterized in that present method is to adopt waste and old ultra-fine hard alloy body as base-material, through pulverizing, ball milling, roasting, send into reactor, add acid solution and catalyzer stirring, obtain wolfram varbide (WC) powder and cobaltous carbonate powder through press filtration and drying then, concrete steps are as follows:
(1) get the raw materials ready---adopt waste and old ultra-fine hard alloy body as base-material, by with metallographic equipment and the general equipment of light base-material being carried out the composition content analysis, stacking is cleaned in classification after the metallurgical analysis;
(2) base-material powder process---adopt high-frequency percussion equipment that the base-material that cleans up is ground into particle, its grain diameter≤10mm, then the base-material particle is sent into the powdering particle of under protective atmosphere, dry grinding in the high-frequency vibration ball mill, its grain graininess≤150 μ m, described protective atmosphere is nitrogen or argon gas;
(3) reduction and roasting---matrix of powder material packed into, and to push temperature in the graphite boat be that 1200～1300 ℃ high temperature molybdenum wire tube furnace or single tube pushes away in the boat High Temperature Furnaces Heating Apparatus, in protective atmosphere, powder is reduced and roasting, reducing atmosphere reacted 50～80 minutes down, removed oxidation impurities and Volatile Elements;
(4) leach reaction---above-mentioned powder is sent in the autoclave, add acid solution and catalyzer, its powder and acid solution volume ratio are: powder: acid solution=1: 2～4, the weight that adds catalyzer is not more than 1% of powder and acid solution gross weight, high-speed stirring is even under protective atmosphere, cobalt as the bonding phase in the powder liquefies rapidly, wolfram varbide (WC) powder as main body precipitates with solid-state form, its reacting kettle inner pressure is 1.5～3.0 kilograms, 80 ℃～150 ℃ of temperature of reaction, extraction time is 2～4 hours, described acid solution is a sulphuric acid soln, and its concentration PH is 2.0, and described catalyzer adopts commercially available cobalt catalysts, catalyzer quickens the cobalt reaction, separates thereby accelerate body;
(5) solid-liquid blended slip is carried out press filtration and drying, obtain highly purified ultrafine tungsten carbide (WC) powder and cobaltous carbonate powder.
The present invention can effectively remove harmful element in the Wimet, guarantees the processing method of product good mechanical property and body main component sharp separation; Reach that the productive expense energy consumption is low, efficient is high, the purpose of stable performance and environmental protection.The fragmentation of equipment high-frequency vibration, bonding liquefaction separation and press filtration separating treatment have mutually been adopted, production efficiency and production capacity have not only been improved, and effectively removed harmful element and impurity element, make further refinement of powder and purification, and reach the high effect of production efficiency; The Wimet of making can access the crystal grain that is evenly distributed, and has obtained the synchronous raising of Wimet hardness and intensity under the same process condition, and performance index surpass primary powder goods.
Embodiment
A kind of method of utilizing waste ultra-fine hard alloy body fast crushing separating extracting tungsten carbide and cobaltous carbonate, it is characterized in that present method is to adopt waste and old ultra-fine hard alloy body as base-material, through pulverizing, ball milling, roasting, send into reactor, add acid solution and catalyzer stirring, obtain wolfram varbide (WC) powder and cobaltous carbonate powder through press filtration and drying then, concrete steps are as follows:
(1) get the raw materials ready---adopt waste and old ultra-fine hard alloy body as base-material, by with metallographic equipment and the general equipment of light base-material being carried out the composition content analysis, stacking is cleaned in classification after the metallurgical analysis;
(2) base-material powder process---adopt high-frequency percussion equipment that the base-material that cleans up is ground into particle, its grain diameter≤10mm, then the base-material particle is sent into the powdering particle of under protective atmosphere, dry grinding in the high-frequency vibration ball mill, its grain graininess≤150 μ m, described protective atmosphere is nitrogen or argon gas;
(3) reduction and roasting---matrix of powder material packed into, and to push temperature in the graphite boat be that 1200～1300 ℃ high temperature molybdenum wire tube furnace or single tube pushes away in the boat High Temperature Furnaces Heating Apparatus, in protective atmosphere, powder is reduced and roasting, reducing atmosphere reacted 50～80 minutes down, removed oxidation impurities and Volatile Elements;
(4) leach reaction---above-mentioned powder is sent in the autoclave, add acid solution and catalyzer, its powder and acid solution volume ratio are: powder: acid solution=1: 2～4, the weight that adds catalyzer is not more than 1% of powder and acid solution gross weight, high-speed stirring is even under protective atmosphere, cobalt as the bonding phase in the powder liquefies rapidly, wolfram varbide (WC) powder as main body precipitates with solid-state form, its reacting kettle inner pressure is 1.5～3 kilograms, 80 ℃～150 ℃ of temperature of reaction, extraction time is 2～4 hours, and described acid solution is a sulphuric acid soln, and sulfuric acid concentration PH equals 2.0; Described catalyzer adopts commercially available cobalt catalysts, and catalyzer quickens the cobalt reaction, separates thereby accelerate body;
(5) solid-liquid blended slip is carried out press filtration and drying, obtain highly purified ultra-fine carbonic acid tungsten (WC) powder and cobaltous carbonate powder.
The present invention has adopted the fragmentation of equipment high-frequency vibration, bonding liquefaction separation and press filtration separating treatment mutually, production efficiency and production capacity have not only been improved, and effectively removed harmful element and impurity element, make further refinement of powder and purification, and reach the high effect of production efficiency; The Wimet of making can access the crystal grain that is evenly distributed, and has obtained the synchronous raising of Wimet hardness and intensity under the same process condition, and performance index surpass primary powder goods.
Several alloy designations performance test results of thin wolfram varbide (WC) the powder trial-production of now this processing method being produced:
A：YG10X-001
The batching of this batch materials is parsed into and is divided into: total carbon: 5.37%; Cobalt contents: 9.73%; Ta (Nb) C:0.5%; The batching gross weight is 350KG.
Gained alloy property index: density 14.48g/mm3; HRA:91.8; Bending strength: 2472.7N/mm2; Porosity: A02B02C00, no hole; There is not the decarburization situation of oozing; Grain fineness number 0.8u, β is evenly distributed mutually.
YG10X-002
Being parsed into of this batch materials is divided into: total carbon: 5.33%; Cobalt contents: 9.85%; Ta (Nb) C:0.5%, the batching gross weight is 350KG.
Gained alloy property index: density 14.46g/mm3; HRA:91.9; Bending strength: 2509.6N/mm2; Porosity: A02B00C00, no hole; There is not the decarburization situation of oozing; Grain fineness number 0.6u, β is evenly distributed mutually.
Annotate: YG10X trade mark alloy industry standard is: density 14.2～14.6g/mm3; HRA:＞91.0; Bending strength:＞2000N/mm2; Porosity: A04B02C00.
B：YW2-001
The batching of this batch materials is parsed into and is divided into: total carbon: 6.22%; Cobalt contents: 7.96%; Composite carbide 16.3%.The batching gross weight is 160KG.
Gained alloy property index: density 13.18g/mm3; HRA:91.8; Bending strength: 2127.6N/mm2; Porosity: A02B00C00, no hole; There is not the decarburization situation of oozing; Grain fineness number 0.6u, β is evenly distributed mutually.
YW2-002：
The batching of this batch materials is parsed into and is divided into: total carbon: 6.20%; Cobalt contents: 7.96%; Composite carbide 16.33%.The batching gross weight is 160KG.
Gained alloy property index: density 13.12g/mm3; HRA:91.7; Bending strength: 2024.9N/mm2; Porosity: A02B00C00, no hole; There is not the decarburization situation of oozing; Grain fineness number 0.6u, β is evenly distributed mutually.Annotate: YW2 trade mark alloy industry standard is: density 13.0～13.5g/mm3; HRA:＞91.0; Bending strength:＞1700N/mm2; Porosity: A04B02C00.
C: the superhard trade mark-001:
The batching of this batch materials is parsed into and is divided into: total carbon: 5.75%; Cobalt contents: 5.42%; Other is 2.5% years old.The batching gross weight is 25KG.
Gained alloy property index: density 14.73g/mm3; HRA:92.9; Bending strength: 2201.7N/mm2; Porosity: A02B02C00 does not have the cavity; There is not the decarburization situation of oozing; Grain fineness number 0.6u, β is evenly distributed mutually.Annotate: the Wimet that can reach this performance index also has only the alloy enterprise of several family can be in batches and stably manufactured at present.
The alloy property index that makes from the foregoing description can reach and the bigger industry standard that exceeds.This method reclaims ultra-fine cemented carbide can the good alloy powder of obtained performance.
Claims (3)
1, a kind of method of utilizing waste ultra-fine hard alloy body fast crushing separating extracting tungsten carbide and cobaltous carbonate, it is characterized in that present method is to adopt waste and old ultra-fine hard alloy body as base-material, through pulverizing, ball milling, roasting, send into reactor, add acid solution and catalyzer stirring, obtain tungsten-carbide powder and cobaltous carbonate powder through press filtration and drying then, concrete steps are as follows:
(1) get the raw materials ready-adopt waste and old ultra-fine hard alloy body as base-material, by with metallographic equipment and the general equipment of light base-material being carried out the composition content analysis, stacking is cleaned in classification after the metallurgical analysis;
(2) base-material powder process-employing high-frequency percussion equipment is ground into particle with the base-material that cleans up, its grain diameter≤10mm, then the base-material particle is sent into the powdering particle of under protective atmosphere, dry grinding in the high-frequency vibration ball mill, its grain graininess≤150 μ m, described protective atmosphere is nitrogen or argon gas;
(3) reduction and roasting-with matrix of powder material packed into, and to push temperature in the graphite boat be that 1200～1300 ℃ high temperature molybdenum wire tube furnace or single tube pushes away in the boat High Temperature Furnaces Heating Apparatus, in protective atmosphere, powder is reduced and roasting, reducing atmosphere reacted 50～80 minutes down, removed oxidation impurities and Volatile Elements;
(4) leaching react-is sent into above-mentioned powder in the autoclave, add acid solution and catalyzer, its powder and acid solution volume ratio are: powder: acid solution=1: 2～4, the weight that adds catalyzer is not more than 1% of powder and acid solution gross weight, high-speed stirring is even under protective atmosphere, cobalt as the bonding phase in the powder liquefies rapidly, tungsten-carbide powder as main body precipitates with solid-state form, its reacting kettle inner pressure is 1.5～3.0 kilograms, 80 ℃～150 ℃ extraction times of temperature of reaction are 2～4 hours, described acid solution is a sulphuric acid soln, its concentration PH is 2.0, described catalyzer adopts commercially available cobalt catalysts, and catalyzer quickens the cobalt reaction, separates thereby accelerate body;
(5) solid-liquid blended slip is carried out press filtration and drying, obtain highly purified superfine tungsten carbide powder and cobaltous carbonate powder.
2, a kind of method of utilizing waste ultra-fine hard alloy body fast crushing separating extracting tungsten carbide and cobaltous carbonate according to claim 1 is characterized in that described protective atmosphere is nitrogen or argon gas.
3, a kind of method of utilizing waste ultra-fine hard alloy body fast crushing separating extracting tungsten carbide and cobaltous carbonate according to claim 1 is characterized in that described acid solution is that employing concentration is that PH is 2.0 sulfuric acid.
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| CNA2008100308267A CN101239720A (en) | 2008-03-17 | 2008-03-17 | Method for fast crushing separating extracting tungsten carbide and cobalt carbonate by using waste ultra-fine hard alloy body |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653404A (en) * | 2011-09-14 | 2012-09-05 | 自贡硬质合金有限责任公司 | Method for producing cast tungsten carbide by utilizing tungsten-containing hard-face material soft waste |
| CN102795625A (en) * | 2012-08-30 | 2012-11-28 | 自贡市国林硬质材料有限责任公司 | Method for recycling high-purity tungsten carbide from tungsten-cobalt type waste hard alloy |
| CN103773986A (en) * | 2014-01-08 | 2014-05-07 | 江西省科学院应用物理研究所 | High-strength regenerated hard alloy and preparation method thereof |
| CN110229989A (en) * | 2019-05-09 | 2019-09-13 | 陕西理工大学 | A kind of polynary hard alloy and preparation method thereof |
| CN110629052A (en) * | 2019-09-16 | 2019-12-31 | 厦门钨业股份有限公司 | Method for recovering tungsten carbide and cobalt sulfate from tungsten carbide waste |
-
2008
- 2008-03-17 CN CNA2008100308267A patent/CN101239720A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653404A (en) * | 2011-09-14 | 2012-09-05 | 自贡硬质合金有限责任公司 | Method for producing cast tungsten carbide by utilizing tungsten-containing hard-face material soft waste |
| CN102795625A (en) * | 2012-08-30 | 2012-11-28 | 自贡市国林硬质材料有限责任公司 | Method for recycling high-purity tungsten carbide from tungsten-cobalt type waste hard alloy |
| CN103773986A (en) * | 2014-01-08 | 2014-05-07 | 江西省科学院应用物理研究所 | High-strength regenerated hard alloy and preparation method thereof |
| CN103773986B (en) * | 2014-01-08 | 2016-03-02 | 江西省科学院应用物理研究所 | A kind of preparation method of high strength regeneration Wimet |
| CN110229989A (en) * | 2019-05-09 | 2019-09-13 | 陕西理工大学 | A kind of polynary hard alloy and preparation method thereof |
| CN110229989B (en) * | 2019-05-09 | 2021-04-23 | 陕西理工大学 | Multi-element hard alloy and preparation method thereof |
| CN110629052A (en) * | 2019-09-16 | 2019-12-31 | 厦门钨业股份有限公司 | Method for recovering tungsten carbide and cobalt sulfate from tungsten carbide waste |
| CN110629052B (en) * | 2019-09-16 | 2022-05-17 | 厦门钨业股份有限公司 | Method for recovering tungsten carbide and cobalt sulfate from tungsten carbide waste |
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