Study on the influential factors and whitening mechanism of mineral ...
WEBJan 10, 2019 · Whitening and purifiion of calcined talc powders from black talc by the milling and reactive calcination with magnesium precursors. As the main raw material for ceramics and coatings, black talc contains high contents of organic carbon and quartz, which deteriorates the whiteness and purity of calcined talc. In this work,..