GB917480A - Process for roasting finely divided iron sulphides - Google Patents

Process for roasting finely divided iron sulphides

Info

Publication number
GB917480A
GB917480A GB15915/59A GB1591559A GB917480A GB 917480 A GB917480 A GB 917480A GB 15915/59 A GB15915/59 A GB 15915/59A GB 1591559 A GB1591559 A GB 1591559A GB 917480 A GB917480 A GB 917480A
Authority
GB
United Kingdom
Prior art keywords
cinder
sulphur
roasting
finely divided
vaporized
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
GB15915/59A
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.)
Bolidens Gruvaktiebolag
Original Assignee
Bolidens Gruvaktiebolag
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 Bolidens Gruvaktiebolag filed Critical Bolidens Gruvaktiebolag
Publication of GB917480A publication Critical patent/GB917480A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C22B1/10—Roasting processes in fluidised form
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Compounds Of Iron (AREA)

Abstract

In a process for the fluidized roasting of finely divided iron sulphides, e.g. pyrites, the temperature and the ratio of oxygen to sulphide material are controlled so that the cinder obtained comprises magnetite and some sulphur is vaporized, and the cinder is separated from the roasting gases to which more oxygen is added to effect complete conversion of the vaporized sulphur to sulphur dioxide in the absence of the cinder. The cinder may be carried away with the roasting gases and separated therefrom in a cyclone separator before the sulphur in the gases is burnt on addition of further oxygen. If arsenic is present in the sulphide material it is vaporized and burnt with the sulphur after removal of the cinder.
GB15915/59A 1958-05-08 1959-05-08 Process for roasting finely divided iron sulphides Expired GB917480A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE443658 1958-05-08
SE435859 1959-05-05

Publications (1)

Publication Number Publication Date
GB917480A true GB917480A (en) 1963-02-06

Family

ID=26654514

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15915/59A Expired GB917480A (en) 1958-05-08 1959-05-08 Process for roasting finely divided iron sulphides

Country Status (3)

Country Link
BE (1) BE578499A (en)
FI (1) FI34476A (en)
GB (1) GB917480A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3617255A (en) * 1968-04-25 1971-11-02 Boliden Ab Process for repressing sulfur trioxide formation in iron sulfide roasting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3617255A (en) * 1968-04-25 1971-11-02 Boliden Ab Process for repressing sulfur trioxide formation in iron sulfide roasting

Also Published As

Publication number Publication date
BE578499A (en) 1959-08-31
FI34476A (en) 1964-09-10

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