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C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
C01B17/00—Sulfur; Compounds thereof
C01B17/02—Preparation of sulfur; Purification
C01B17/027—Recovery of sulfur from material containing elemental sulfur, e.g. luxmasses or sulfur containing ores; Purification of the recovered sulfur
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FR2188D1901-11-251903-08-21Nouvelle cornue à travail continu pour la sublimation et l'affinage du soufre
ExpiredFR2188E
(fr)
Nouvelle méthode ou procédé perfectionné pour la préparation et l'épuration du papier de rebut et la production de la pate à papier au moyen de celui-ci