首页>
外国专利>
The process aperfeicoado to oxidize a material carbonaceo and to shoot a kaolin clay gray
The process aperfeicoado to oxidize a material carbonaceo and to shoot a kaolin clay gray
展开▼
机译:该过程aperfeicoado氧化一种原料碳aceoo和拍摄高岭土灰色
展开▼
页面导航
摘要
著录项
相似文献
摘要
A process is provided for purifying finely divided minerals contacting organic material sufficiently to make the minerals useful for coating a filling paper or for use as catalysts, catalyst supports or the like. The process comprises concomitantly contacting an aqueous slurry of the mineral with a peroxygen and a gas containing ozone at a pH from 5 to 12. Preferably, the peroxygen is incorporated into the slurry prior to contacting the slurry with a gas containing ozone. Optionally, the slurry may be pretreated with a chelating agent or subsequently bleached with a reducing agent.
展开▼