SURFACE MODIFICATION COMBINED TREATMENT DEVICE AND METHOD FOR FUMED SILICA

摘要

A surface modification combined treatment method and device for fumed silica. The surface modification combined treatment method comprises the following steps: (1) performing combined treatment on fumed silica by adopting two groups of modification devices, and modifying the fumed silica by using a modifier in reaction furnaces (10) of each group of modification devices to respectively obtain two groups of modified fumed silica and waste gas; and (2) respectively separating the waste gas obtained in the step (1) to obtain an unreacted modifier and a byproduct, inputting the obtained byproduct into the reaction furnaces (10) of the other group of modification devices as a reaction aid to participate in the modification reaction, and returning the obtained unreacted modifier to the reaction furnace (10) of the original modification device to be repeatedly used.