FR2053607A6 - High temp furnace for sintering dolomite or magnesia - Google Patents

High temp furnace for sintering dolomite or magnesia

Info

Publication number
FR2053607A6
FR2053607A6 FR6923514A FR6923514A FR2053607A6 FR 2053607 A6 FR2053607 A6 FR 2053607A6 FR 6923514 A FR6923514 A FR 6923514A FR 6923514 A FR6923514 A FR 6923514A FR 2053607 A6 FR2053607 A6 FR 2053607A6
Authority
FR
France
Prior art keywords
furnace
mixture
oil
air
magnesia
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
FR6923514A
Other languages
French (fr)
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.)
ETU RECH SCIENTIF MIN
Original Assignee
ETU RECH SCIENTIF MIN
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 ETU RECH SCIENTIF MIN filed Critical ETU RECH SCIENTIF MIN
Priority to FR6923514A priority Critical patent/FR2053607A6/en
Priority to US845260A priority patent/US3625497A/en
Priority to CA058,168A priority patent/CA944951A/en
Priority to GB38122/69A priority patent/GB1277786A/en
Priority to LU59189D priority patent/LU59189A1/xx
Priority to DE1938541A priority patent/DE1938541C3/en
Priority to BE736736A priority patent/BE736736A/en
Priority to CH1159869A priority patent/CH511410A/en
Application granted granted Critical
Publication of FR2053607A6 publication Critical patent/FR2053607A6/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/005—Shaft or like vertical or substantially vertical furnaces wherein no smelting of the charge occurs, e.g. calcining or sintering furnaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Abstract

Vertical shaft furnace for the continuous firing of dolomite, magnesia, calcium carbonate or fire clay using an oil-air mixture. Mixture consists of vapourised fuel oil and hot air having a temperature of 300-650 degrees C, air being present only in sufficient quantity to permit 40% combustion of the oil. The mixture is prepared by heating up the oil under pressure at 300-350 degrees C, allowing it to vapourise by reducing the pressure and reheating it prior to stepwise mixing with hot air. The mixture is introduced in to the furnace through tuyeres so constructed as to induce turbulence to the vapour air mixture. Feeding into the furnace takes place through recessed slits in the wall the recesses being continued throughout the length of the shaft as grooves in the wall. Even firing of the charge is promoted by the introduction of an open tube into the centre part of the top feeding end of the furnace and the charge being fed in two sizes by means of a specially designed hopper, fines into the ring shape spaced between the tube and furnace walls, coarse into the pipe. At the bottom discharge end there is fitted a hearth with a conical protuberance in the centre which opt. may be votatable.
FR6923514A 1968-07-30 1969-07-10 High temp furnace for sintering dolomite or magnesia Expired FR2053607A6 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FR6923514A FR2053607A6 (en) 1969-07-10 1969-07-10 High temp furnace for sintering dolomite or magnesia
US845260A US3625497A (en) 1968-07-30 1969-07-28 Process for roasting solids
CA058,168A CA944951A (en) 1968-07-30 1969-07-29 Process and apparatus for roasting solids
GB38122/69A GB1277786A (en) 1968-07-30 1969-07-29 Process and apparatus for roasting solids
LU59189D LU59189A1 (en) 1968-07-30 1969-07-29
DE1938541A DE1938541C3 (en) 1968-07-30 1969-07-29 Method and shaft furnace for firing, in particular for sintering dolomite or magnesia, at high temperature
BE736736A BE736736A (en) 1968-07-30 1969-07-29 High temperature firing process and furnace, in particular for sintering dolomite or magnesia
CH1159869A CH511410A (en) 1968-07-30 1969-07-30 Continuous baking process in a vertical oven and oven for its implementation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6923514A FR2053607A6 (en) 1969-07-10 1969-07-10 High temp furnace for sintering dolomite or magnesia

Publications (1)

Publication Number Publication Date
FR2053607A6 true FR2053607A6 (en) 1971-04-16

Family

ID=9037264

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6923514A Expired FR2053607A6 (en) 1968-07-30 1969-07-10 High temp furnace for sintering dolomite or magnesia

Country Status (1)

Country Link
FR (1) FR2053607A6 (en)

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