Method for extracting silicon carbide micro powder and diesel oil fuel
A technology of silicon carbide micropowder and extraction method, which is applied in the direction of only multi-stage series refining process treatment, can solve problems that have not yet been seen, and achieve the effects of avoiding leakage, saving resources and saving water.
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[0044] The method for extracting silicon carbide micropowder and fuel diesel oil using the waste oil sand produced in the process of crystalline silicon cutting, grinding and polishing as raw materials of the present invention comprises the following steps:
[0045] a. Extraction of fuel diesel
[0046] ①. Vacuum evaporation and condensation
[0047] Put the waste oil sand into the disc continuous dryer, heat it, evaporate it under the pressure of -0.02Mpa~-0.08Mpa, collect the fuel oil vapor fraction with a temperature between 180~270℃, enter the condenser, and condense into liquid Fuel diesel, to be filtered;
[0048] ②. Filtration
[0049] Filtrate through an oil filter to obtain fuel diesel;
[0050] ③. Cooling
[0051] The waste sand after extracting the fuel diesel is cooled to room temperature and set aside;
[0052] b. Extraction of silicon carbide powder
[0053] ①. Crushing and sieving
[0054] Pulverize the waste sand after extracting the fuel diesel in step ...
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