GB454165A - Improvements in and relating to processes for the production of ferro-manganese - Google Patents

Improvements in and relating to processes for the production of ferro-manganese

Info

Publication number
GB454165A
GB454165A GB9725/35A GB972535A GB454165A GB 454165 A GB454165 A GB 454165A GB 9725/35 A GB9725/35 A GB 9725/35A GB 972535 A GB972535 A GB 972535A GB 454165 A GB454165 A GB 454165A
Authority
GB
United Kingdom
Prior art keywords
manganese
iron
per cent
reduced
ferro
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
GB9725/35A
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.)
SACHTIEBEN AG fur BERGBAU und
Vodafone GmbH
Original Assignee
SACHTIEBEN AG fur BERGBAU und
Mannesmannroehren Werke AG
Mannesmann 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 SACHTIEBEN AG fur BERGBAU und, Mannesmannroehren Werke AG, Mannesmann AG filed Critical SACHTIEBEN AG fur BERGBAU und
Publication of GB454165A publication Critical patent/GB454165A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00

Landscapes

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

Abstract

Manganese ores or slags containing too large a proportion of iron to permit of being worked up to ferro-manganese in one stage are melted, after the addition if necessary of fluxes, e.g. limestone, fluorspar, or sand, to form a neutral or slightly acid and low-melting manganous oxide slag, and so much iron is reduced, as by means of charcoal, at a temperature below the reduction temperature of the manganese, as to form an intermediate product possessing an iron-manganese ratio required for producing the ferro-manganese desired. The basicity of this product is then increased by the addition of lime and on increase of temperature it is reduced to ferro-manganese. The two stages may be effected in one or separate furnaces. The iron reduced from the manganous oxide slag may be continuously or intermittently removed. In an example an ore containing 31,1 per cent of iron and 17,8 per cent of manganese are melted with a flux and by the addition of reducing charcoal so much iron is reduced at 1300-1400 DEG C. as to leave a manganous oxide slag containing 5,2 per cent of iron and 25,9 per cent of manganese. Lime and reducing charcoal are added to this slag which is reduced at about 1600 DEG C. to ferromanganese containing 11,4 per cent of iron and 79,1 per cent of manganese.
GB9725/35A 1934-07-23 1935-03-28 Improvements in and relating to processes for the production of ferro-manganese Expired GB454165A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE454165X 1934-07-23

Publications (1)

Publication Number Publication Date
GB454165A true GB454165A (en) 1936-09-25

Family

ID=6538877

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9725/35A Expired GB454165A (en) 1934-07-23 1935-03-28 Improvements in and relating to processes for the production of ferro-manganese

Country Status (1)

Country Link
GB (1) GB454165A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2634204A (en) * 1951-01-25 1953-04-07 Sylvester & Company Recovery of manganese

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2634204A (en) * 1951-01-25 1953-04-07 Sylvester & Company Recovery of manganese

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