Particle size and distribution width of two key technical indicators are in line with international advanced standards diamond powder classification technology

Ultra-fine diamond powder as raw materials, using traditional techniques to solve the current domestic fine diamond powder can only be purified to ninety-seven% less this problem as the goal, and diamond powder products for domestic and international technical standards huge gap status, size and distribution width of two key technical indicators are in line with international advanced standards diamond powder  polycrystalline diamond technology. The paper also explores the purification process of the ultrafine diamond powder grading, purification and grading will combine. The reagent-treated fine powder was washed by centrifugation, adding a  abrasive wheels of the surface active agent, and observed under the microscope. By a large number of experiments, we developed a new purification method for fine diamond powder: the dedicated reagent strong ultrasonic dispersion, prepared open diamond  synthetic diamond formed during impurities, which is due to high temperature and pressure such that the resultant diamond single crystal particles and the reaction raw materials, additives, catalysts and other closely bonded together and form, thus increasing the contact area of ​​the reagent, the effect to improve the decomposition of impurities.+