Process for preparing cement with a low hexavalent chromium content
Номер патента: WO2005090258A8
Опубликовано: 07-12-2006
Автор(ы): Angelo Orlandi, Flavio Cambria, Francesco Cambria, Roberto Lanza, Stefano Cambi
Принадлежит: Angelo Orlandi, Flavio Cambria, Francesco Cambria, Gruppo Chimico Dalton S P A, Roberto Lanza, Stefano Cambi
Опубликовано: 07-12-2006
Автор(ы): Angelo Orlandi, Flavio Cambria, Francesco Cambria, Roberto Lanza, Stefano Cambi
Принадлежит: Angelo Orlandi, Flavio Cambria, Francesco Cambria, Gruppo Chimico Dalton S P A, Roberto Lanza, Stefano Cambi
Реферат: This invention relates to a process for producing cement having a hexavalent chromium content lower than 2 ppm, when hydrated, comprising the step of adding, to the cement or processing intermediate thereof ammonium, alkaline metal or earth alkaline metal disulphides and/or polysulphides. The present invention also relates to the product that can be obtained by such a process.
Process for preparing cement with a low hexavalent chromium content
Номер патента: WO2005090258A1. Автор: Flavio Cambria,Angelo Orlandi,Francesco Cambria,Roberto Lanza,Stefano Cambi. Владелец: Gruppo Chimico Dalton S.P.A. Дата публикации: 2005-09-29.