A sample of the coal is partially demineralized by treatment with hydrochloric and hydrofluoric acids under such conditions that coal substance remains unaffected. The loss in mass of the coal due the acid treatment is recorded and the undissolved part of the mineral matter is determined by ashing the partiallay demineralized coal. The iron copntent of the ash is determined so that the pyrites presentin the extracted coal can be calculated. In addition the amount of hydrochloric acid absorbed by the coal substance is determined.
Дата регистрации:
01.03.83
Дата введения:
01.02.83
Код КГС:
А19
Код ОКСТУ:
0308;5728;3973
Код ОКС(МКС):
73.040
Код ОКП:
0308;5728;3973
Нормативные ссылки:
NF M03-033-1968, EQV*SS 18 71 56-1984, NEQ
Ключевые слова:
CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING COAL DETERMINATION OF CONTENT MINERAL MATTER MINERAL MATTER DETERMINATION MINERALS SOLID FUELS DETER CHEMICAL ANALYSIS AND TESTIN MINERALS AND ORES