GB656142A - Improvements in metallurgy - Google Patents

Improvements in metallurgy

Info

Publication number
GB656142A
GB656142A GB3172148A GB3172148A GB656142A GB 656142 A GB656142 A GB 656142A GB 3172148 A GB3172148 A GB 3172148A GB 3172148 A GB3172148 A GB 3172148A GB 656142 A GB656142 A GB 656142A
Authority
GB
United Kingdom
Prior art keywords
matte
ferrous sulphate
iron
solid
sulphur
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
GB3172148A
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 GB656142A publication Critical patent/GB656142A/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
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
    • C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
    • C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
    • 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
    • C22B11/00—Obtaining noble metals
    • C22B11/04—Obtaining noble metals by wet processes
    • 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
    • C22B15/00—Obtaining copper
    • C22B15/0063—Hydrometallurgy
    • C22B15/0065—Leaching or slurrying
    • C22B15/0067—Leaching or slurrying with acids or salts thereof
    • C22B15/0071—Leaching or slurrying with acids or salts thereof containing sulfur
    • 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
    • C22B19/00—Obtaining zinc or zinc oxide
    • C22B19/20—Obtaining zinc otherwise than by distilling
    • C22B19/22—Obtaining zinc otherwise than by distilling with leaching with acids
    • 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
    • C22B23/00—Obtaining nickel or cobalt
    • C22B23/04—Obtaining nickel or cobalt by wet processes
    • C22B23/0407—Leaching processes
    • C22B23/0415—Leaching processes with acids or salt solutions except ammonium salts solutions
    • C22B23/043—Sulfurated acids or salts thereof
    • 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
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

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

Abstract

A matte containing iron sulphide and at least one other element is digested with aqueous sulphuric acid to produce (1) an aqueous solution of ferrous sulphate substantially free of other elements present in the matte, (2) hydrogen sulphide containing the sulphur combined with iron in the matte, (3) a solid product containing all the remaining sulphides present in the matte; the ferrous sulphate solution is separated from the solid product and is treated, e.g. by evaporation or cooling, to recover solid ferrous sulphate which is decomposed to iron oxide. The finely divided solid matte, obtained by smelting iron sulphide ore, may be treated at above 25 DEG C., say 50-70 DEG C. countercurrent in a series of vats by continuously introducing raw matte into the first vat and 15-20 per cent acid into the last vat of the series to produce a neutral saturated solution of ferrous sulphate and a solid residue of sulphides of cobalt, copper, gold, nickel, platinum, silver, zinc, molybdenum, tin or vanadium. Part of the zinc may be recovered as zinc sulphate at an intermediate stage. The solid ferrous sulphate may be dehydrated in a rotary kiln at 400-450 DEG C. in a countercurrent of hot gas passed in contact therewith. The anhydrous product may be heated in a muffle furnace out of contact with air and combustion gases at 480-1300 DEG C. by hot combustion gases and the waste gases may be passed to the rotary kiln. The sulphur dioxide in the mixture of sulphur dioxide and trioxide obtained from the muffle furnace may be oxidized to sulphur trioxide and all the sulphur trioxide absorbed in concentrated sulphuric acid to regenerate the acid used in treating the iron sulphide ore. Specifications 566,375, 656,140, 656,141 and 656,143 are referred to. The Specification as open to inspection under Sect. 91 comprises also the electrolysis of the ferrous sulphate solution to regenerate sulphuric acid and iron. This subject-matter does not appear in the Specification as accepted.
GB3172148A 1946-12-09 1947-12-01 Improvements in metallurgy Expired GB656142A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US656142XA 1946-12-09 1946-12-09

Publications (1)

Publication Number Publication Date
GB656142A true GB656142A (en) 1951-08-15

Family

ID=22063925

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3172148A Expired GB656142A (en) 1946-12-09 1947-12-01 Improvements in metallurgy

Country Status (1)

Country Link
GB (1) GB656142A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010125205A1 (en) * 2009-04-27 2010-11-04 Tioxide Europe, S.L. Method for producing ferrous sulphate from pyrite ash

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010125205A1 (en) * 2009-04-27 2010-11-04 Tioxide Europe, S.L. Method for producing ferrous sulphate from pyrite ash

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