Abstract:

With orthogonal design, researches on the technology and prescription of surface coating of granular activated carbon, and measurement of its performance parameteners were carried out. Based on the studies, a best prescription was selected, the optimum is as follows: coating agent: 19, water: 70, stabilizing agent: 7, adhesive agent: 12. The surface coating carbon produced according to the presc.pdon is more functional, which enjoys many advantages: smoothness on their surface, wearability, no blackening hand and nice looking and absorptive poweer. If the Iodine value of raw activated carbon is 680.6mg/g and the rate of benzene absorption is 17.7%, the performances parameters of the products are Iodine value: 652.3mg/g, the rate of benzene absorption is 17.9%, deducting rate: 98.8%. If the Iodine value of raw activated carbon is 1020.3mg/g and the rate of benzene absorption is 32.2%, the performances parameters of the products are lodine value: 981.1 mg/g, the rate of benzene absorption is 30.8%, deducing rate: 98.56% This technology is easy to control and not complicated, furthermore, thc absorption ability of carbon won't be affected, so this study will expanded the use range of activated carbon.

Key words: Activated carbon, Surface coating, Coloration, Coat