The method of improving the oil absorption value of white carbon black products

Abstract

The invention discloses a method for improving an oil absorption value of a white carbon black product. In order to overcome the defects that after performing pressure filtration, white carbon black prepared by the existing gel method is pulped for 2-3 hours, and the oil absorption value of white carbon black is reduced because of destruction of a mechanical force to a secondary structure of white carbon black, and the like, the method disclosed by the invention shortens the dispersing time of white carbon black slurry by shortening the pulping time of white carbon black, and refines the pulped white carbon black by using a refining pump. The method is used for improving the oil absorption value of the white carbon black product; and by using the method, the oil absorption value of white carbon black is improved by 0.3-0.4, and simultaneously, power consumption can be saved by about 55 kilowatt-hours when each ton of white carbon black is produced. Thus, the method has obvious economic benefits.

Description

technical field [0001] The invention relates to a production method of a white carbon black product, in particular to a method for increasing the oil absorption value of a white carbon black product. Background technique [0002] The indicator of the oil absorption value of silica is an important performance that reflects the secondary structure of silica. In the application field of silica, the oil absorption value of silica is required to be at least 2.5 in feed, pesticides, fire extinguishing agents and matting agents. . The silica produced by the gel method has the advantages of high oil absorption value, high specific surface area, and good transparency of silica. However, the white carbon black produced by the traditional gel method needs to be beaten for 2 to 3 hours after the press filtration is completed. Because the secondary structure of the white carbon black produced by the gel method is not strong, it needs to be beaten during the press filter and long time be...

AI Technical Summary

Problems solved by technology

However, the white carbon black produced by the traditional gel method needs to be beaten for 2 to 3 hours after the press filtration is completed. Because the secondary structure of the white carbon black produced by the gel method is not strong, it needs to be beaten during the press filter and long time beating process. Among them, due to the destruction of the secondary structure of silica by mechanical force, the oil absorption value of silica is reduced