STUDY OF LIT <b>ER</b> ATURE ON SEPARATION OF MAGNESIA FROM LIME IN DOLOMITE AND SIMILAR MATERIALS*

Abstract

T able OF C ontents I, Introduction. II, Physical Extraction: (1) classifying, (2) calcination, (3) hydration, (4) leaching, (5) flotation, (6) crystallization, and (7) miscellaneous physical methods. III, Chemical Extraction: (1) forming carbonates and formates, ( A ) carbon dioxide, ( B ) carbonates, and ( C ) carbon monoxide; (2) chlorine compounds, ( A ) chlorine, ( B ) hydrochloric acid, (C) calcium chloride, ( D ) magnesium chloride, ( E ) cyclic process, ( F ) hydrochloric acid manufacture; (3) nitric acid; (4) sulfur compounds, ( A ) sulfuric acid, ( B ) sodium sulfate, ( C ) sodium bisulfate, ( D ) calcium sulfate, ( E ) magnesium sulfate, ( F ) sulfur dioxide, ( G ) sulfites, and ( H ) sulfur, sulfides, hydrogen sulfide; (5) ammonia and ammonium salts; (6) alkalis, ( A ) calcium hydroxide, and ( B ) sodium hydroxide; (7) organic compounds, ( A ) acetic acid, and ( B ) sugar; (8) sea water, (9) electrochemical methods; (10) ion exchange, (11) miscellaneous chemical methods. IV Miscellaneous. V. Conclusions VI, Bibliography VII, Author Index.