GB191404937A - Improvements in or relating to the Smelting of Ores and Apparatus therefor. - Google Patents

Improvements in or relating to the Smelting of Ores and Apparatus therefor.

Info

Publication number
GB191404937A
GB191404937A GB191404937DA GB191404937A GB 191404937 A GB191404937 A GB 191404937A GB 191404937D A GB191404937D A GB 191404937DA GB 191404937 A GB191404937 A GB 191404937A
Authority
GB
United Kingdom
Prior art keywords
electrodes
matte
lead
zinc
supplied
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
Inventor
Frank William Highfield
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
Application granted granted Critical
Publication of GB191404937A publication Critical patent/GB191404937A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/02—Ohmic resistance heating
    • F27D11/04—Ohmic resistance heating with direct passage of current through the material being heated

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

4937. Highfield, F. W. Feb. 25. Dry processes of extracting lead; matte processes for copper; distilling zinc. - In the reduction of complex sulphide ores, the ore after roasting is mixed with a reducing-agent and heated in a resistance furnace with a reducing- atmosphere to volatilize the zinc. The lead is then run off, and the residual matte is further heated to enable a silicious slag to be formed ; decomposition of the matte may then be promoted by the action of a direct current. The furnace hearth B is supported by a carriage B' and held against the walls A by means of jacks B', and has a lining of silica C covered with a layer C<1> of refractory material such as magnesite, dolomite, or chromite, conductive when hot. Three hollow water-cooled electrodes D are embedded in the lining, and a central electrode F is arranged at the base of the hearth to co-operate with a water-cooled electrode F<2> depending from the roof. A rotation of the'molten charge caused by the action of the three-phase current supplied to the electrodes D may be increased by an arrangement of intermediate auxiliary electrodes. At starting, a charge of ore and limestone is desulphurized by means of a blast injected through tuyeres G, whereupon current is supplied to the electrodes D, the blast is cut off, and carbon and iron are added to the charge. The zinc vapours escape at a temperature of about 950‹ C. through an ontlet A<2>, and the lead is tapped. The temperature is then raised to about 1300‹ C., and current may also be supplied to the electrodes F, F<2> to refine the matte.
GB191404937D 1914-02-25 1914-02-25 Improvements in or relating to the Smelting of Ores and Apparatus therefor. Expired GB191404937A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191404937T 1914-02-25

Publications (1)

Publication Number Publication Date
GB191404937A true GB191404937A (en) 1915-05-25

Family

ID=32582251

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191404937D Expired GB191404937A (en) 1914-02-25 1914-02-25 Improvements in or relating to the Smelting of Ores and Apparatus therefor.

Country Status (1)

Country Link
GB (1) GB191404937A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103322826A (en) * 2013-04-01 2013-09-25 富阳申能固废环保再生有限公司 Movable furnace hearth
CN109652656A (en) * 2019-01-29 2019-04-19 郴州雄风环保科技有限公司 A kind of precious metal alloys purification process of enriching and refinement oxide furnace

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103322826A (en) * 2013-04-01 2013-09-25 富阳申能固废环保再生有限公司 Movable furnace hearth
CN109652656A (en) * 2019-01-29 2019-04-19 郴州雄风环保科技有限公司 A kind of precious metal alloys purification process of enriching and refinement oxide furnace

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