Physical Method of Sic Superfine Micro Powder Deironing

Sic superfine micro powder has a higher fusing point, hardness, stable chemical properties and physical properties. It is widely used in modern industrial fields. But when smelting or processing Sic, it is likely to bring in impurities, among which iron, especially ferric oxide is frequently seen. Since Sic superfine micro powder with impurities will exert a huge influence on range of application, it is essential to know how to improve the Sic purity by deironing.

Although the chemical method of Sic superfine micro powder deironing can thoroughly, the Sic after chemical deironing may get blocked, which is difficult to handle. The physical method of Sic superfine micro powder deironing mainly employs mechanical physical deironing method that requires magnetic separator equipment, and collects the iron impurities in the Sic superfine micro powder taking advantage of magnet working principle. Since there are different specifications of magnetic separator equipment, the iron collecting effect varies. The method of magnetic separator equipment is fast and convenient, but its effect is limited in that it can only improve the purities of Sic to make it reach the standard but cannot remove the iron thoroughly.

Therefore, those that need high-purity Sic superfine micro powder can use the mag magnetic separator equipment deironing repeatedly or chemical method to remove the iron impurities. If one simply wants to increase Sic purity and lower down the iron content, the he or she is suggested to use physical method.

Author: Liwei Chu
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