Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB6511/60A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayer AGfiledCriticalBayer AG
Publication of GB879702ApublicationCriticalpatent/GB879702A/en
C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
C01B17/00—Sulfur; Compounds thereof
C01B17/48—Sulfur dioxide; Sulfurous acid
C01B17/50—Preparation of sulfur dioxide
C01B17/52—Preparation of sulfur dioxide by roasting sulfides
C—CHEMISTRY; METALLURGY
C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
C22B1/00—Preliminary treatment of ores or scrap
C22B1/02—Roasting processes
Abstract
In the production of sulphur dioxide by roasting pyrites or other sulphur ores, deposition of arsenic contaminant on heat exchanger surfaces is diminished by maintaining such surfaces at 270 to 310 DEG C.
GB6511/60A1959-03-071960-02-24Process for cooling arsenic containing roasting gases
ExpiredGB879702A
(en)
Procedure to separate chlorine mixtures and sulfurous anhydride that, eventually, can carry air. (Machine-translation by Google Translate, not legally binding)