Products Description
A process method for extracting high-purity silicon powder and silicon carbide powder from the waste mortar produced by monocrystalline silicon cutting or grinding silicon wafers, including solid-liquid separation of waste mortar, removal of the suspension agent and binder in the waste material through organic solvent, gas flotation of solid sand to obtain silicon powder of certain purity, further liquid flotation and gravity separation of the silicon powder, and then pickling the sorted silicon powder to obtain high-purity silicon powder. At the same time, the mixed powder of silicon carbide and metal obtained by gravity separation is magnetically separated to obtain pure silicon carbide powder. The method of the present invention can effectively recover the high-purity silicon in the waste mortar produced by the silicon rod cutting processing, and the silicon carbide powder that is used as a cutting abrasive, and the recovery efficiency is high, and it is a practical technology that turns waste into treasure and solves the problem of shortage of high-purity silicon raw material resources.
Products parameters
| Model | Component % | |||
| 60# | SiC | F.C | Fe2O3 | |
| 65# | 60min | 15-20 | 8-12 | 3.5max |
| 70# | 65min | 15-20 | 8-12 | 3.5max |
| 75# | 70min | 15-20 | 8-12 | 3.5max |
| 80# | 75min | 15-20 | 8-12 | 3.5max |
| 85# | 80min | 3-6 | 3.5max | |
| 90# | 85min | 2.5max | 3.5max | |
| 95# | 90min | 1.0max | 1.2max | |
| 97# | 95min | 0.6max | 1.2max | |
Products cooperation picture
1.Methane can be directly converted to C2 hydrocarbon under high-power pulsed microwave irradiation on three catalysts: activated carbon, silicon carbide and activated carbon/silicon carbide under atmospheric pressure. The results show that the synergistic effect of microwave heating and microwave plasma can directly convert methane to acetylene on the porous silicon carbide-supported activated carbon catalyst with high conversion and selectivity when suitable microwave conditions are used. In addition to the microwave heating induction and microwave plasma catalysis, the transfer reaction mechanism may be a specific manifestation of the interaction between microwave heating and microwave plasma, which plays an important role in promoting the direct conversion of methane to acetylene.
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