CN101525700A - Recovery processing method of hard alloy scraps - Google Patents
Recovery processing method of hard alloy scraps Download PDFInfo
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- CN101525700A CN101525700A CN200910043243A CN200910043243A CN101525700A CN 101525700 A CN101525700 A CN 101525700A CN 200910043243 A CN200910043243 A CN 200910043243A CN 200910043243 A CN200910043243 A CN 200910043243A CN 101525700 A CN101525700 A CN 101525700A
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Abstract
The invention discloses a recovery processing method of hard alloy scraps. The method comprises the following steps: a. the hard alloy scraps and a filling agent of charcoal black are put into a graphite boat and put into a carbon tube furnace to be calcined under hydrogen at a high temperature, the calcining temperature is from 1600 DEG C to 2400 DEG C, the calcining time is from 30 min to 80 min, and the hydrogen amount is 1.2 to 2.6m<3>/h; b. the hard alloy scraps after being calcined at the high temperature are unloaded from the boat, cleaned on the surfaces, crushed at two stages by a jaw crusher and a roller crusher into alloy granules with the granularity of 2 mm to 8 mm; c. ball milling is carried out to the alloy granules after being crushed, the ratio of grinding media to material is (4 to 5):1, and the ball milling time is from 8 hours to 16 hours; d. alloy powder which is obtained after ball milling is screened, and the screened alloy powder which is detected to be qualified is used for mixing by a traditional production technology and manufacturing a hard alloy. The method adopts high-temperature calcination so that the hard alloy scraps are extremely easy to crush and process, and the recovered alloy powder has the same ingredients as the tungsten carbide of the processed hard alloy scraps and a binding metal.
Description
Technical field
The regeneration that the present invention relates to hard alloy scraps is used, particularly the processing recovery method of hard alloy scraps.
Background technology
Wimet has advantages such as very high hardness, wear resisting property and Young's modulus, is used widely at aspects such as modern tool material, high-abrasive material, high temperature resistant and corrosion resistant materials.The main raw material tungsten and the cobalt of preparation Wimet are again the price height, the rare metal that ore reserve are few, therefore the hard alloy scraps goods that how can't use aborning again recycle, and again as the raw material of preparation Wimet, are subjected to the attention of height always.The present domestic application processing recovery method of hard alloy scraps more widely mainly is a mechanical crushing method, molten method of zinc and electro-dissolving.But, all there is the recycling equipment more complicated to some extent in these methods, and there is problem of environmental pollution in treatment process energy consumption height, after particularly in the recycling process, having added other metal, with the regeneration Wimet difficult quality guarantee of handling the cemented carbide powder production of reclaiming.
Summary of the invention
The objective of the invention is to overcome above-mentioned hard alloy scraps and handle the equipment complexity that recovery method exists, the energy consumption height, technical problems such as regeneration Wimet quality instability, a kind of processing recovery method of new hard alloy scraps is provided, it adopts high-temperature calcination and Mechanical Crushing and grinds process combined, the cemented carbide powder foreign matter content that reclaims is low, helps improving the quality product of regeneration Wimet.
Hard alloy scraps of the present invention is handled recovery method, and it is a kind of first high-temperature calcination, and the Mechanical Crushing and the method for milling again specifically may further comprise the steps:
A, hard alloy scraps and weighting agent carbon black are packed in the graphite boat, put into the carbon tube furnace high-temperature calcination under hydrogen, calcining temperature is 1600～2400 ℃, calcination time 30～80 minutes, hydrogen flowing quantity 1.2～2.6m
3/ h;
B, will unload boat, clean surface through the hard alloy scraps after the high-temperature calcination after, be broken into the alloy granule that granularity is 2～8mm for two sections with jaw crusher and roll crusher;
C, the alloy granule after the fragmentation is carried out ball milling, ratio of grinding media to material is (4～5): 1, and 8～16 hours ball milling time;
D, the alloy powder behind the ball milling is sieved, undersized alloy powder detects and is used for the traditional processing technology batching after qualified, makes Wimet.
The processing recovery method of hard alloy scraps of the present invention is to do in the carbon tube furnace of protection gas at hydrogen; handle hard alloy scraps with 1600～2400 ℃ of temperature calcination; matrix metal structure in the hard alloy scraps is disintegrated; hard hard alloy scraps becomes loose porous; very easily broken processing, thereby handle recovery method than simple Mechanical Crushing and save the man-hour and the energy greatly.The present invention does not add other metal in handling removal process, the alloy powder that recovery obtains has identical wolfram varbide with the hard alloy scraps of processing and becomes to be grouped into matrix metal, after only needing uncombined carbon in the analyzing and testing alloy powder and iron level qualified, promptly can be used as the batching of producing the regeneration Wimet.And, the alloy powder tungsten carbide crystal grain that obtains after high-temperature calcination is handled becomes thick, intracrystalline imperfection reduces, therefore, the regeneration Wimet made from the alloy powder of this recovery has better mechanical property and long work-ing life, is applicable to the various mining instruments of preparation, stress metal processing apparatus and shock-resistant mechanical part.Flow process of the present invention is short, and coordinative composition of equipments is simple, and environmental pollution is little, and alloy recovery is higher.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Fig. 2 reclaims the WC-20%Co Wimet microstructure metallograph that alloy powder is produced for the present invention.
The WC-20%Co Wimet microstructure metallograph that Fig. 3 produces for the traditional proportioning powder.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail.
Embodiment 1: with the 5kg hard alloy scraps, be weighting agent with the carbon black, in the graphite boat of packing into, make carbon black cover hard alloy scraps.Again graphite boat is put into and carried out high-temperature calcination with hydrogen as the carbon tube furnace of shielding gas and handle 1630～1700 ℃ of calcining temperatures, calcining soaking time 30 minutes, hydrogen flowing quantity 1.3m
3/ h.Come out of the stove after calcining is finished and unload boat, and after being cooled to normal temperature, the waste alloy surface cleaning is clean, adopt two sections Mechanical Crushing of jaw crusher and roll crusher again, waste alloy is broken into the alloy granule that granularity is 2～8mm.2～8mm alloy granule after the Mechanical Crushing packed into mill in the ball mill, ratio of grinding media to material is 5: 1,16 hours ball milling time.With the alloy powder discharging that obtains behind the ball milling, and sieve, screen out coarse particles, with the granularity that keeps reclaiming compact product structure and preparing burden and need, screen undersize is handles the alloy powder that reclaims.Undersized alloy powder sampling analysis is detected, and free carbon content is less than 0.2%, and iron level is less than 0.3%, and alloy powder cleans, and nothing is mingled with, and is qualified alloy powder.The recovery alloy powder that this is qualified carries out charge calculation by the requirement of required Wimet trade mark chemical ingredients, makes hard alloy finished product such as used for geological prospecting through traditional hard alloy production process again.
Embodiment 2: carry out high-temperature calcination with the 8kg hard alloy scraps and handle, 2000～2100 ℃ of calcining temperatures, calcining soaking time 50 minutes, hydrogen flowing quantity 1.8m
3/ h.The ratio of grinding media to material of alloy granule ball milling 4.5: 1, the 11 hours ball milling time (other processing step, appointed condition, controlled variable are equal to embodiment 1).Qualified alloy powder free carbon content is 0.18%, and iron level is 0.28%, the alloy powder cleaning, and nothing is mingled with.The recovery alloy powder that this is qualified carries out charge calculation by the requirement of required Wimet trade mark chemical ingredients, makes the hard alloy finished product of mine rock drilling usefulness or other purposes again through traditional hard alloy production process.
Embodiment 3: carry out high-temperature calcination with the 10kg hard alloy scraps and handle, 2300～2400 ℃ of calcining temperatures, calcining soaking time 80 minutes, hydrogen flowing quantity 2.5m
3/ h.The ratio of grinding media to material of alloy granule ball milling 4: 1, the 8 hours ball milling time (other processing step, appointed condition, controlled variable are equal to embodiment 1).Qualified alloy powder free carbon content is 0.17%, and iron level is 0.25%, the alloy powder cleaning, and nothing is mingled with.The recovery alloy powder that this is qualified carries out charge calculation by the requirement of required Wimet trade mark chemical ingredients, makes the hard alloy finished product of mine rock drilling usefulness or other purposes again through traditional hard alloy production process.
Claims (1)
1, a kind of processing recovery method of hard alloy scraps is characterized in that it may further comprise the steps:
A, hard alloy scraps and weighting agent carbon black are packed in the graphite boat, put into the carbon tube furnace high-temperature calcination under hydrogen, calcining temperature is 1600～2400 ℃, calcination time 30～80 minutes, hydrogen flowing quantity 1.2～2.6m
3/ h;
B, will unload boat, clean surface through the hard alloy scraps after the high-temperature calcination after, be broken into the alloy granule that granularity is 2～8mm for two sections with jaw crusher and roll crusher;
C, the alloy granule after the fragmentation is carried out ball milling, ratio of grinding media to material is (4～5): 1, and 8～16 hours ball milling time;
D, the alloy powder behind the ball milling is sieved, undersized alloy powder detects and is used for the traditional processing technology batching after qualified, makes Wimet.
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| CN200910043243A CN101525700A (en) | 2009-04-28 | 2009-04-28 | Recovery processing method of hard alloy scraps |
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| CN200910043243A CN101525700A (en) | 2009-04-28 | 2009-04-28 | Recovery processing method of hard alloy scraps |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781718A (en) * | 2010-02-02 | 2010-07-21 | 河北六隆硬质合金集团有限公司 | Method for extracting metal cobalt and tungsten from scrap hard alloy and special calcining device |
| CN102049521A (en) * | 2010-12-27 | 2011-05-11 | 杭州天石硬质合金有限公司 | Process for crushing waste hard alloy |
| CN101658940B (en) * | 2009-09-25 | 2011-11-16 | 北京工业大学 | Method for recycling and regenerating hard alloy |
| CN102784918A (en) * | 2012-08-23 | 2012-11-21 | 蓬莱市超硬复合材料有限公司 | Method for producing roll collars by recycling tungsten carbide from waste hard alloy roll collars |
| CN102897842A (en) * | 2012-09-29 | 2013-01-30 | 崇义章源钨业股份有限公司 | Method for treating tungsten carbide waste |
| CN102912136A (en) * | 2012-09-29 | 2013-02-06 | 崇义章源钨业股份有限公司 | Method for processing tungsten powder wastes |
| CN102925692A (en) * | 2012-09-29 | 2013-02-13 | 崇义章源钨业股份有限公司 | Method for treating waste hard alloy |
| CN103033044A (en) * | 2012-12-27 | 2013-04-10 | 株洲硬质合金集团有限公司 | Continuous high-temperature carbonization furnace and method for continuously producing coarse-grained carbide powder |
| CN103495736A (en) * | 2013-10-28 | 2014-01-08 | 成都名钨科技有限责任公司 | Method for recycling hard alloy green body |
| 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 |
| CN105344694A (en) * | 2015-09-29 | 2016-02-24 | 北京工业大学 | Method for removing Al2O3 and TiCN composite coating on surface of hard alloy |
| CN106795580A (en) * | 2016-01-27 | 2017-05-31 | 王娜 | A kind of method that fused salt chemistry method reclaims hard alloy scraps |
| CN111426192A (en) * | 2020-04-13 | 2020-07-17 | 湖南天益高技术材料制造有限公司 | Method for recycling waste hard alloy roll collars |
| CN117206531A (en) * | 2023-11-07 | 2023-12-12 | 崇义章源钨业股份有限公司 | Crushing method of waste solid hard alloy |
-
2009
- 2009-04-28 CN CN200910043243A patent/CN101525700A/en active Pending
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101658940B (en) * | 2009-09-25 | 2011-11-16 | 北京工业大学 | Method for recycling and regenerating hard alloy |
| CN101781718A (en) * | 2010-02-02 | 2010-07-21 | 河北六隆硬质合金集团有限公司 | Method for extracting metal cobalt and tungsten from scrap hard alloy and special calcining device |
| CN101781718B (en) * | 2010-02-02 | 2012-12-26 | 河北六隆硬质合金集团有限公司 | Method for extracting metal cobalt and tungsten from scrap hard alloy and special calcining device |
| CN102049521A (en) * | 2010-12-27 | 2011-05-11 | 杭州天石硬质合金有限公司 | Process for crushing waste hard alloy |
| CN102049521B (en) * | 2010-12-27 | 2013-01-16 | 杭州天石硬质合金有限公司 | Process for crushing waste hard alloy |
| CN102784918A (en) * | 2012-08-23 | 2012-11-21 | 蓬莱市超硬复合材料有限公司 | Method for producing roll collars by recycling tungsten carbide from waste hard alloy roll collars |
| CN102897842A (en) * | 2012-09-29 | 2013-01-30 | 崇义章源钨业股份有限公司 | Method for treating tungsten carbide waste |
| CN102912136A (en) * | 2012-09-29 | 2013-02-06 | 崇义章源钨业股份有限公司 | Method for processing tungsten powder wastes |
| CN102925692A (en) * | 2012-09-29 | 2013-02-13 | 崇义章源钨业股份有限公司 | Method for treating waste hard alloy |
| CN103033044A (en) * | 2012-12-27 | 2013-04-10 | 株洲硬质合金集团有限公司 | Continuous high-temperature carbonization furnace and method for continuously producing coarse-grained carbide powder |
| CN103033044B (en) * | 2012-12-27 | 2015-04-22 | 株洲硬质合金集团有限公司 | Continuous high-temperature carbonization furnace and method for continuously producing coarse-grained carbide powder |
| CN103495736A (en) * | 2013-10-28 | 2014-01-08 | 成都名钨科技有限责任公司 | Method for recycling hard alloy green body |
| 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 |
| CN105344694A (en) * | 2015-09-29 | 2016-02-24 | 北京工业大学 | Method for removing Al2O3 and TiCN composite coating on surface of hard alloy |
| CN106795580A (en) * | 2016-01-27 | 2017-05-31 | 王娜 | A kind of method that fused salt chemistry method reclaims hard alloy scraps |
| WO2017127950A1 (en) * | 2016-01-27 | 2017-08-03 | 王娜 | Molten salt chemical method for recovering waste hard alloy |
| CN106795580B (en) * | 2016-01-27 | 2018-07-06 | 王娜 | A kind of method of fused salt chemistry method recycling hard alloy scraps |
| US10369631B2 (en) | 2016-01-27 | 2019-08-06 | Na Wang | Method for recycling waste cemented carbide by molten salt chemistry |
| CN111426192A (en) * | 2020-04-13 | 2020-07-17 | 湖南天益高技术材料制造有限公司 | Method for recycling waste hard alloy roll collars |
| CN117206531A (en) * | 2023-11-07 | 2023-12-12 | 崇义章源钨业股份有限公司 | Crushing method of waste solid hard alloy |
| CN117206531B (en) * | 2023-11-07 | 2024-02-27 | 崇义章源钨业股份有限公司 | Crushing method of waste solid hard alloy |
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Open date: 20090909 |