CN102049521A - Process for crushing waste hard alloy - Google Patents
Process for crushing waste hard alloy Download PDFInfo
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- CN102049521A CN102049521A CN 201010606249 CN201010606249A CN102049521A CN 102049521 A CN102049521 A CN 102049521A CN 201010606249 CN201010606249 CN 201010606249 CN 201010606249 A CN201010606249 A CN 201010606249A CN 102049521 A CN102049521 A CN 102049521A
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- hard alloy
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Abstract
The invention relates to a process for crushing waste hard alloy, in particular to a process for easily crushing high-temperature carburized and sintered waste hard alloy. The process comprises the steps of sintering the waste hard alloy to a high temperature of between 1,800 and 1,900 DEG C, adding carbon black till the total carbon content is 6.13 to 6.20% by weight percent, reducing the temperature of the waste hard alloy to normal temperature, and conveying the waste hard alloy to a ball mill for ball milling and crushing. According to the process for crushing the waste hard alloy, the problems of difficult crushing, high cost and long time consumption in reclamation and reutilization of the conventional waste hard alloy are solved; as the waste alloy is crushed, the purity of the alloy is improved, so that the strength of the waste hard alloy is reduced and the waste hard alloy is easy to crush; and the crushed waste hard alloy can be used as tungsten carbide for mine fittings and coarse granules and the like.
Description
Technical field
The present invention relates to a kind of crushing process of hard alloy scraps, make its breakable technology after relating in particular to a kind of hard alloy scraps high-temperature carburizing sintering.
Background technology
The breaking method of current hard alloy scraps is varied, the quality of broken recovery product is also uneven, day by day deficient in national rare metal mineral resources, under the market factor that material prices such as tungsten, titanium, tantalum rise steadily, utilize the broken method of producing carbide alloy of scrap hard alloy, becoming " giving up " is a very significant job into " treasured ", processes such as general scrap hard alloy fragmentation is generally molten through zinc, ball milling, this process length consuming time, the cost height, power consumption is big.
Summary of the invention
Technical problem to be solved by this invention provides a kind of crushing process of hard alloy scraps, solve hard alloy scraps in the past in recycling broken difficult, cost is high, the problem of length consuming time.
For addressing the above problem, technical scheme of the present invention is:
A kind of crushing process of hard alloy scraps, it comprises the steps: hard alloy scraps high temperature sintering to 1800 ℃～1900 ℃, add carbon black and make total carbon content, reduce the temperature to hard alloy scraps behind the normal temperature and send into ball mill and carry out ball mill crushing at 6.13～6.20wt%.
Preferably, the ratio of described hard alloy scraps and carbon black is 100:1.
Preferably, described high temperature sintering is to carry out in vacuum carbon tube furnace, and vacuum carbon tube furnace has little, the capacious advantage of power consumption.
The crushing process of hard alloy scraps provided by the invention, solved in the past hard alloy scraps in recycling broken difficult, cost is high, the problem of length consuming time, this crushing process is that alloy from waste is carried out fragmentation, improve the purity of alloy, the intensity of hard alloy scraps is reduced, reach the effect of easy fragmentation, the hard alloy scraps after the fragmentation can be done mine accessory and coarse grained tungsten carbide etc.
The specific embodiment
Further describe the present invention below in conjunction with embodiment, but protection scope of the present invention is not limited to this.
Embodiment 1:
The crushing process of hard alloy scraps of the present invention, it comprises the steps: coarse granule alloy from waste hard alloy scraps high temperature sintering to 1900 ℃ in vacuum carbon tube furnace, make binding metal fully melt the purity that improves alloy, increase the granularity of alloy, add a certain amount of carbon black, the part by weight of described hard alloy scraps and carbon black is 100:1, make the total carbon content ratio reach 6.13～6.20 wt%, make hard alloy scraps be in breakable overload carbon state, this moment, alloy rigidity was constant, but the intensity reduction, when temperature drops to normal temperature, to be in overload carbon state hard alloy scraps and send into ball mill and carry out ball mill crushing, the required ball milling time is 5 hours.Sieve by 60 eye mesh screens in the back, promptly can be used as the raw material of secondary operations again through oven dry, and these raw material are added an amount of tungsten carbide, can produce new carbide alloy through conventional hard alloy production process, thereby realize recycling.And the scrap hard alloy fragmentation of not handling through the present invention generally will be melted through zinc, the process of ball milling, and the required ball milling time was generally 8 hours, and zinc is molten to need 8 hours, the electricity charge need 15 yuan/kilogram, and this crushing process has shortened the time, and the required electricity charge need only 5 yuan/kilogram, have saved cost.
Embodiment 2:
With middle particle alloy from waste hard alloy scraps high temperature sintering to 1800 ℃ in vacuum carbon tube furnace, make binding metal fully melt the purity that improves alloy, other crushing process process is shown in embodiment 1.
Claims (3)
1. the crushing process of a hard alloy scraps, it is characterized in that, it comprises the steps: hard alloy scraps high temperature sintering to 1800 ℃～1900 ℃ is added carbon black and makes total carbon content at 6.13～6.20wt%, reduces the temperature to hard alloy scraps behind the normal temperature and sends into ball mill and carry out ball mill crushing.
2. the crushing process of hard alloy scraps according to claim 1 is characterized in that, the ratio of described hard alloy scraps and carbon black is 100:1.
3. the crushing process of hard alloy scraps according to claim 1 is characterized in that, described high temperature sintering is to carry out in vacuum carbon tube furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010606249 CN102049521B (en) | 2010-12-27 | 2010-12-27 | Process for crushing waste hard alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010606249 CN102049521B (en) | 2010-12-27 | 2010-12-27 | Process for crushing waste hard alloy |
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| Publication Number | Publication Date |
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| CN102049521A true CN102049521A (en) | 2011-05-11 |
| CN102049521B CN102049521B (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010606249 Expired - Fee Related CN102049521B (en) | 2010-12-27 | 2010-12-27 | Process for crushing waste hard alloy |
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| CN (1) | CN102049521B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706724A (en) * | 2012-04-23 | 2012-10-03 | 西宁特殊钢股份有限公司 | Liquid nitrogen quenching sample preparation method for hard alloy material |
| CN103725912A (en) * | 2014-01-27 | 2014-04-16 | 株洲市硬质合金加工有限公司 | Method for recovering and treating waste hard alloy mixture |
| CN104294049A (en) * | 2014-09-23 | 2015-01-21 | 福建德隆硬质合金有限公司 | Recovery and reutilization technique of waste hard alloy |
| CN106362845A (en) * | 2016-08-31 | 2017-02-01 | 福建莲峰铜业有限公司 | Extraction method for diamonds in old tool bits and reusing process of produced alloy powder |
| CN114833347A (en) * | 2022-04-29 | 2022-08-02 | 浙江恒成硬质合金有限公司 | Method for recycling waste hard alloy with high bonding phase |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1278560A (en) * | 2000-07-13 | 2001-01-03 | 北京工业大学 | Recovery and regeneration method of steel junction hard alloy |
| CN101525700A (en) * | 2009-04-28 | 2009-09-09 | 株洲硬质合金集团有限公司 | Recovery processing method of hard alloy scraps |
-
2010
- 2010-12-27 CN CN 201010606249 patent/CN102049521B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1278560A (en) * | 2000-07-13 | 2001-01-03 | 北京工业大学 | Recovery and regeneration method of steel junction hard alloy |
| CN101525700A (en) * | 2009-04-28 | 2009-09-09 | 株洲硬质合金集团有限公司 | Recovery processing method of hard alloy scraps |
Non-Patent Citations (1)
| Title |
|---|
| 《稀有金属与硬质合金》 20040930 胡宇杰等 废硬质合金的回收再生方法及研究进展 53-57 1-3 第32卷, 第3期 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706724A (en) * | 2012-04-23 | 2012-10-03 | 西宁特殊钢股份有限公司 | Liquid nitrogen quenching sample preparation method for hard alloy material |
| CN103725912A (en) * | 2014-01-27 | 2014-04-16 | 株洲市硬质合金加工有限公司 | Method for recovering and treating waste hard alloy mixture |
| CN103725912B (en) * | 2014-01-27 | 2016-07-20 | 株洲市硬质合金加工有限公司 | The method that waste hard alloy mixture reclaims and processes |
| CN104294049A (en) * | 2014-09-23 | 2015-01-21 | 福建德隆硬质合金有限公司 | Recovery and reutilization technique of waste hard alloy |
| CN104294049B (en) * | 2014-09-23 | 2016-05-11 | 福建德隆硬质合金有限公司 | A kind of recycling technique of hard alloy scraps |
| CN106362845A (en) * | 2016-08-31 | 2017-02-01 | 福建莲峰铜业有限公司 | Extraction method for diamonds in old tool bits and reusing process of produced alloy powder |
| CN106362845B (en) * | 2016-08-31 | 2019-11-01 | 福建莲峰铜业有限公司 | The extracting method of diamond and the alloyed powder of generation recycle technique in old cutter head |
| CN114833347A (en) * | 2022-04-29 | 2022-08-02 | 浙江恒成硬质合金有限公司 | Method for recycling waste hard alloy with high bonding phase |
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| Publication number | Publication date |
|---|---|
| CN102049521B (en) | 2013-01-16 |
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Granted publication date: 20130116 Termination date: 20161227 |