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FR2395956A1 - PROCESS FOR TRANSFORMATION OF PHOSPHOGYPSE INTO CALCIUM OXIDE AND SULPHUROUS GAS IN THE PRESENCE OF CARBON OR SULFUR MATERIALS - Google Patents

PROCESS FOR TRANSFORMATION OF PHOSPHOGYPSE INTO CALCIUM OXIDE AND SULPHUROUS GAS IN THE PRESENCE OF CARBON OR SULFUR MATERIALS

Info

Publication number
FR2395956A1
FR2395956A1 FR7719814A FR7719814A FR2395956A1 FR 2395956 A1 FR2395956 A1 FR 2395956A1 FR 7719814 A FR7719814 A FR 7719814A FR 7719814 A FR7719814 A FR 7719814A FR 2395956 A1 FR2395956 A1 FR 2395956A1
Authority
FR
France
Prior art keywords
calcium oxide
phosphogypse
carbon
transformation
sulphurous gas
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.)
Granted
Application number
FR7719814A
Other languages
French (fr)
Other versions
FR2395956B3 (en
Inventor
Nikola Borissov Videnov
Ivan Nikolov Grandcharov
Ivan Panayotov Dombalov
Yoncho Georgiev Pelovski
Yovka Petkova Bakalova
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.)
Vish Khim T I
Original Assignee
Vish Khim T I
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
Priority to DE19772728149 priority Critical patent/DE2728149A1/en
Application filed by Vish Khim T I filed Critical Vish Khim T I
Priority to FR7719814A priority patent/FR2395956A1/en
Priority to GB27297/77A priority patent/GB1564663A/en
Priority to BE2056047A priority patent/BE856467A/en
Publication of FR2395956A1 publication Critical patent/FR2395956A1/en
Application granted granted Critical
Publication of FR2395956B3 publication Critical patent/FR2395956B3/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • C01B17/52—Preparation of sulfur dioxide by roasting sulfides
    • 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
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/90—Separation; Purification
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/02—Oxides or hydroxides
    • C01F11/04—Oxides or hydroxides by thermal decomposition
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/02—Oxides or hydroxides
    • C01F11/08—Oxides or hydroxides by reduction of sulfates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/46—Sulfates
    • C01F11/466—Conversion of one form of calcium sulfate to another
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/50—Agglomerated particles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Glanulating (AREA)
  • Catalysts (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

a. Procédé de transformation du phosphogypse sous une couche bouillonnante, en gaz sulfureux et en oxyde de calcium b. Il consiste à sécher le phosphogypse humide, et à réaliser la granulation à l'aide d'additifs liants en présence de matières premières contenant du charbon et/ou du soufre, les granules obtenues étant soumises à un traitement thermique. c. Utilisable dans l'industrie de fabrication de l'acide sulfuriqueat. Process for transforming phosphogypsum under a bubbling layer into sulphurous gas and calcium oxide b. It consists in drying the wet phosphogypsum, and in carrying out the granulation with the aid of binder additives in the presence of raw materials containing carbon and / or sulfur, the granules obtained being subjected to a heat treatment. vs. Usable in the sulfuric acid manufacturing industry

FR7719814A 1977-06-22 1977-06-28 PROCESS FOR TRANSFORMATION OF PHOSPHOGYPSE INTO CALCIUM OXIDE AND SULPHUROUS GAS IN THE PRESENCE OF CARBON OR SULFUR MATERIALS Granted FR2395956A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE19772728149 DE2728149A1 (en) 1977-06-22 1977-06-22 METHOD FOR PROCESSING PHOSPHOGIPS
FR7719814A FR2395956A1 (en) 1977-06-22 1977-06-28 PROCESS FOR TRANSFORMATION OF PHOSPHOGYPSE INTO CALCIUM OXIDE AND SULPHUROUS GAS IN THE PRESENCE OF CARBON OR SULFUR MATERIALS
GB27297/77A GB1564663A (en) 1977-06-22 1977-06-29 Process for thermal decomposition of phosphogypsum
BE2056047A BE856467A (en) 1977-06-22 1977-07-05 PROCESS FOR THE TRANSFORMATION OF PHOSPHOPLATRE

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19772728149 DE2728149A1 (en) 1977-06-22 1977-06-22 METHOD FOR PROCESSING PHOSPHOGIPS
FR7719814A FR2395956A1 (en) 1977-06-22 1977-06-28 PROCESS FOR TRANSFORMATION OF PHOSPHOGYPSE INTO CALCIUM OXIDE AND SULPHUROUS GAS IN THE PRESENCE OF CARBON OR SULFUR MATERIALS
GB27297/77A GB1564663A (en) 1977-06-22 1977-06-29 Process for thermal decomposition of phosphogypsum
BE856467 1977-07-05

Publications (2)

Publication Number Publication Date
FR2395956A1 true FR2395956A1 (en) 1979-01-26
FR2395956B3 FR2395956B3 (en) 1980-04-25

Family

ID=27425009

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7719814A Granted FR2395956A1 (en) 1977-06-22 1977-06-28 PROCESS FOR TRANSFORMATION OF PHOSPHOGYPSE INTO CALCIUM OXIDE AND SULPHUROUS GAS IN THE PRESENCE OF CARBON OR SULFUR MATERIALS

Country Status (3)

Country Link
DE (1) DE2728149A1 (en)
FR (1) FR2395956A1 (en)
GB (1) GB1564663A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3633710A1 (en) * 1986-10-03 1988-04-14 Bayer Ag METHOD FOR PRODUCING SULFUR DIOXIDE
CA1329466C (en) * 1986-11-06 1994-05-17 Jerome Herbert Marten Desulfurization of gypsum
US4963513A (en) * 1989-05-24 1990-10-16 Florida Institute Of Phosphate Research Coal gasification cogeneration process

Also Published As

Publication number Publication date
DE2728149A1 (en) 1979-01-11
GB1564663A (en) 1980-04-10
FR2395956B3 (en) 1980-04-25

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Legal Events

Date Code Title Description
ST Notification of lapse