GB643479A - Method of manufacturing sulphurous anhydride - Google Patents

Method of manufacturing sulphurous anhydride

Info

Publication number
GB643479A
GB643479A GB20481/47A GB2048147A GB643479A GB 643479 A GB643479 A GB 643479A GB 20481/47 A GB20481/47 A GB 20481/47A GB 2048147 A GB2048147 A GB 2048147A GB 643479 A GB643479 A GB 643479A
Authority
GB
United Kingdom
Prior art keywords
subjecting
sulphur dioxide
aluminous
burning appliance
appliance under
Prior art date
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
GB20481/47A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB643479A publication Critical patent/GB643479A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/02—Portland cement
    • C04B7/04—Portland cement using raw materials containing gypsum, i.e. processes of the Mueller-Kuehne type
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • 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
    • C01B17/501—Preparation of sulfur dioxide by reduction of sulfur compounds
    • C01B17/506—Preparation of sulfur dioxide by reduction of sulfur compounds of calcium sulfates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

Sulphur dioxide is made from calcium sulphate or a mixture thereof with an aluminous or silico-aluminous ore by subjecting the raw material to a primary baking at 800 DEG to 900 DEG C. in a first burning appliance under reducing conditions and subjecting the resulting product containing calcium sulphide, directly and without substantial cooling, to a secondary baking at a higher temperature, e.g. over 1000 DEG C., in a second burning appliance under oxidizing conditions, the solid residue left being a fat lime, hydraulic cement or an alumina-yielding material. In one embodiment, two rotary ovens or kilns are used in coupled relation, the gases during reduction being evacuated to a chimney, while the gases rich in sulphur dioxide evolved in the second kiln are collected in known manner, preferably after passing through a heat exchanger.
GB20481/47A 1944-06-01 1947-07-29 Method of manufacturing sulphurous anhydride Expired GB643479A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR992231T 1944-06-01

Publications (1)

Publication Number Publication Date
GB643479A true GB643479A (en) 1950-09-20

Family

ID=9554613

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20481/47A Expired GB643479A (en) 1944-06-01 1947-07-29 Method of manufacturing sulphurous anhydride

Country Status (2)

Country Link
FR (1) FR992231A (en)
GB (1) GB643479A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3607068A (en) * 1968-07-22 1971-09-21 Elcor Chem Corp Sulfur recovery process
US3607036A (en) * 1968-02-09 1971-09-21 Cities Service Co Recovery of sulfur from gypsum
US4102989A (en) * 1974-05-15 1978-07-25 Iowa State University Research Foundation, Inc. Simultaneous reductive and oxidative decomposition of calcium sulfate in the same fluidized bed

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3607036A (en) * 1968-02-09 1971-09-21 Cities Service Co Recovery of sulfur from gypsum
US3607068A (en) * 1968-07-22 1971-09-21 Elcor Chem Corp Sulfur recovery process
US4102989A (en) * 1974-05-15 1978-07-25 Iowa State University Research Foundation, Inc. Simultaneous reductive and oxidative decomposition of calcium sulfate in the same fluidized bed

Also Published As

Publication number Publication date
FR992231A (en) 1951-10-16

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