GB827161A - Process for the production of ferromanganese from low-grade manganese-bearing materials - Google Patents

Process for the production of ferromanganese from low-grade manganese-bearing materials

Info

Publication number
GB827161A
GB827161A GB21207/56A GB2120756A GB827161A GB 827161 A GB827161 A GB 827161A GB 21207/56 A GB21207/56 A GB 21207/56A GB 2120756 A GB2120756 A GB 2120756A GB 827161 A GB827161 A GB 827161A
Authority
GB
United Kingdom
Prior art keywords
ferromanganese
product
manganese
slag
reducing agent
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
GB21207/56A
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.)
SRATEGIC UDY METALLURG AND CHE
Original Assignee
SRATEGIC UDY METALLURG AND CHE
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 SRATEGIC UDY METALLURG AND CHE filed Critical SRATEGIC UDY METALLURG AND CHE
Publication of GB827161A publication Critical patent/GB827161A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating 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

A ferromanganese product is produced from ore comprising oxides of manganese, iron, calcium and silicon by calcining the ore, charging it into a covered electric furnace on to the surface of a molten slag bath, subjecting the charge to the action of a carbonaceous reducing agent within the furnace at a temperature in the range 1300-1500 DEG C. to reduce to the metallic state iron in excess of that desired in the ferromanganese product and to form a molten slag containing substantially all the manganese of the original ore in the form of manganese silicate and a molten iron product containing impurities from the ore, the slag having a base to acid ratio in the range 0.8-1.5 molecules of base (including manganese oxide as a base) to 1 molecule of silica, passing the slag to a second covered electric furnace for reduction within the same temperature range by means of carbonaceous or non-carbonaceous reducing agent to produce a ferromanganese product, the temperature in both furnaces being controlled by maintaining the arcing tips of the electrodes from 1/2 inch above to 3 inches below the upper surfaces of the molten slag baths therein. The product of the second furnace operation may be a ferromanganese-silicon containing, e.g. 18-45% of silicon, this product being used in a third furnace operation as reducing agent for manganese silicate from a first furnace operation to produce a low or medium carbon ferromanganese. In the second furnace operation calcium carbide may wholly or partly replace the carbonaceous reducing agent. Basic fluxing material in the form of calcium oxide and coke may be added in the second furnace operation to ensure the formation of a small amount of calcium carbide in the residual slag. Specifications 762,469 and 820,241 are referred to.
GB21207/56A 1955-07-22 1956-07-09 Process for the production of ferromanganese from low-grade manganese-bearing materials Expired GB827161A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US827161XA 1955-07-22 1955-07-22

Publications (1)

Publication Number Publication Date
GB827161A true GB827161A (en) 1960-02-03

Family

ID=22172971

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21207/56A Expired GB827161A (en) 1955-07-22 1956-07-09 Process for the production of ferromanganese from low-grade manganese-bearing materials

Country Status (1)

Country Link
GB (1) GB827161A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1508109B1 (en) * 1965-05-04 1970-02-26 African Metals Corp Ltd Process for the production of ferromanganese with up to 1.5% silicon and up to 3% carbon
CN102703698A (en) * 2012-07-11 2012-10-03 昆明永瑞防腐有限公司 Wet metallurgical method for spessartite mineral

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1508109B1 (en) * 1965-05-04 1970-02-26 African Metals Corp Ltd Process for the production of ferromanganese with up to 1.5% silicon and up to 3% carbon
CN102703698A (en) * 2012-07-11 2012-10-03 昆明永瑞防腐有限公司 Wet metallurgical method for spessartite mineral
CN102703698B (en) * 2012-07-11 2014-09-17 昆明永新瑞科技有限公司 Wet metallurgical method for spessartite mineral

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