Dissolution of calcined argillaceous material is effected by fusion, followed by acid extraction, and the iron is reduced in a silver reductor and titrated with standard dichromate. Dissolution of cement is effected by acid extraction, and the iron is reduced by stannous chloride and titrated with standard dichromate. In both cases the aluminium oxide content is obtained by determining the difference between the ammonium hydroxide group content and the ferric oxide content.
Số hiệu tiêu chuẩn
SANS 5738:1971*SABS SM 738:1971
Tên tiêu chuẩn
Ferric oxide content and aluminium oxide content of cement and of calcined argillaceous material
Ngày phát hành
1971-06-10
Tiêu chuẩn liên quan
SABS SM 737
Từ khóa
ALUMINIUM OXIDE * CEMENTS * DETERMINATION OF CONTENT * FERRIC INORGANIC COMPOUNDS * REDUCTION * REDUCTION METHODS * TRIOXIDES * VOLUMETRIC ANALYSIS * Volumetric analysis * Aluminium oxide * Cements * Reduction methods * Reduction * Loss * Trioxides * Determination of content * Ferric inorganic compounds
SANS 5738:1971*SABS SM 738:1971
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