Purification process of the ultra-fine diamond powder grading

Particle size and distribution width of two key technical indicators are in line with international advanced standards diamond powder classification 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 , adding a certain proportion 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  synthetic diamond , prepared open diamond agglomerates 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  abrasive grinding  together and form, thus increasing the contact area of ​​the reagent, the effect to improve the decomposition of impurities, finally obtained purified to more than 99.95% ultra-fine diamond powder.