Method for recycling high-purity tungsten carbide from tungsten-cobalt type waste hard alloy
A technology of cemented carbide and tungsten carbide, which is applied in the field of alloy manufacturing, can solve the problems of high impurity content, achieve the effects of small equipment investment, small increase in manufacturing cost, and high technical and economic value
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Embodiment 1
[0047] Use the inventive method to reclaim
[0048] The recycled waste cemented carbide products are: recycled YG9 cemented carbide rods
[0049] The recovered waste cemented carbide rods are used as raw materials, and after entering the factory, they are washed with tap water and detergent first, and then classified and removed after drying; Particles smaller than 5 mm are subjected to magnetic separation and then rinsed with deionized water to remove impurities brought in by the previous process; enter the electrolytic tank for electrolysis to remove most of the binder phase in the alloy. The electrode reaction of electrolysis takes cobalt as an example:
[0050] Anode: Co-2e→Co2+ Cathode: 2H++2e→H2↑
[0051] After electrolysis, tungsten carbide particles with a sponge-like porous structure are formed. After electrolysis, continue to clean with deionized water.
[0052] Use a 300-liter special ball mill to mill the particles after electrolytic cleaning. The ball milling l...
Embodiment 2
[0063] Recycling using traditional methods
[0064] The recycled waste cemented carbide products are: recycled YG9 cemented carbide rods
[0065] The recovered waste cemented carbide rods are used as raw materials, and after entering the factory, they are washed with tap water and detergent, and then classified and removed after drying; the waste cemented carbide rods after classification and impurities are crushed into diameters Particles smaller than 5 mm are used to remove the impurities brought in by the previous process; enter the electrolytic bath for electrolysis to remove most of the binder phase in the alloy. The electrode reaction of electrolysis takes cobalt as an example:
[0066] Anode: Co-2e→Co2+ Cathode: 2H++2e→H2↑
[0067] After electrolysis, tungsten carbide particles with a sponge-like porous structure are formed. After electrolysis, continue to clean with deionized water.
[0068] Use a 300-liter special ball mill to mill the particles after electrolytic...
Embodiment 3
[0075] Use the inventive method to reclaim
[0076] Recycled waste cemented carbide products are: YG6, YG8 metal cutting blades
[0077] Use the recovered waste metal cutting blades with grades YG6 and YG8 as raw materials to enter the factory, wash them with tap water and detergent, dry them, and then classify and remove impurities; The alloy is broken into particles with a diameter of less than 5 mm, and the particles are magnetically separated and then rinsed with deionized water to remove impurities brought in by the previous process; they are electrolyzed in an electrolytic cell to remove most of the binder phase in the alloy. The electrode reaction of electrolysis takes cobalt as an example:
[0078] Anode: Co-2e→Co2+ Cathode: 2H++2e→H2↑
[0079] After electrolysis, tungsten carbide particles with a sponge-like porous structure are formed. After electrolysis, continue to clean with deionized water.
[0080] Use a 300-liter special ball mill to mill the particles after...
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