Sintering behaviour of a clay containing pyrophyllite ...
The equipment was a Perkin-Elmer, model 703, using air or dinitrogen oxide-acetylene flame. The alkaline elements were determined by Flame Photometry, using an equipment Evans Electroselenium. The LOI ("Loss On Ignition") was determined by thermal treatment at 1000 °C for 1 h using an alumina crucible and 1.000 g of sample.