VERFAHREN ZUR UMWANDLUNG VON CALCIUMSULFATDIHYDRAT IN -G(A)-HALBHYDRAT.

摘要

In the conversion of calcium sulphate dihydrate from the flue gas desulphurisation into settable alpha hemihydrate in a calcining medium comprising chloride-contg. scrubbing liquor from flue gas desulphurisation, followed by washing and drying the hemihydrate, the calcining medium is concd. scrubbing liquor contg. 10-70 wt.% calcium chloride.