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通过对维罗沉积型超微细高岭土矿进行捣浆─分散沉淀除铁、除钛和氧化破坏腐植酸的脱色处理，把维罗高岭土的白度从６０．６％提高到８２．１％，满足了作为涂布级高岭土白度大于８０％的工业指标要求。精土经轻工业部北京造纸研究所试验，除粘度较大外，其余达到刮刀涂布级要求。
Through the dewatering of Verona sedimentary ultra-fine kaolin ore by disperse-dedusting and iron removal, the whiteness of Verotao kaolin is increased from 60.6% to 82.1% in addition to the decolorization treatment of humic acid by oxidation and titanium, satisfying As a coated kaolin whiteness of more than 80% of the industrial target requirements. Jing Tuo Beijing Institute of Light Industry by the Ministry of Light Industry test, in addition to the larger viscosity, the other to reach the scraper coating level requirements.