FR2330769A1 - Coke for foundry cupolas - coated with molten cupola slag before use to retard its oxidn. in upper part of cupola - Google Patents

Coke for foundry cupolas - coated with molten cupola slag before use to retard its oxidn. in upper part of cupola

Info

Publication number
FR2330769A1
FR2330769A1 FR7520796A FR7520796A FR2330769A1 FR 2330769 A1 FR2330769 A1 FR 2330769A1 FR 7520796 A FR7520796 A FR 7520796A FR 7520796 A FR7520796 A FR 7520796A FR 2330769 A1 FR2330769 A1 FR 2330769A1
Authority
FR
France
Prior art keywords
coke
cupola
slag
coated
molten
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.)
Granted
Application number
FR7520796A
Other languages
French (fr)
Other versions
FR2330769B1 (en
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.)
Air Industrie SA
Original Assignee
Air Industrie SA
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 Air Industrie SA filed Critical Air Industrie SA
Priority to FR7520796A priority Critical patent/FR2330769A1/en
Publication of FR2330769A1 publication Critical patent/FR2330769A1/en
Application granted granted Critical
Publication of FR2330769B1 publication Critical patent/FR2330769B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L9/00—Treating solid fuels to improve their combustion
    • C10L9/10—Treating solid fuels to improve their combustion by using additives
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/007—Conditions of the cokes or characterised by the cokes used
    • 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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/08—Manufacture of cast-iron

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

Foundry coke is pretreated before its use in a cupola. The novelty is that each piece of coke is coated with a noncombustible material consisting mainly of slag directly obtd. from the cupola, the slag having a m.pt. >1000 degrees C and pref. 1300-1400 degrees C. The coke is pref. circulated through a molten bath of slag. and may be sprayed with a wetting agent before entering the bath, which may contain a prod. altering its viscosity and improving the coating of the coke with slag. The pref. pretreatment plant consists of a heated U-shaped vessel contg. molten slag and located near the cupola; the coke is fed into the slag and a conveyor used to remove the coated coke from the top of one leg of the "U". The use of coke in a supola is inefficient because of the high proportion of CO in the gas leaving the cupola throat. By coating the coke with slag which does not mealt until 1300-1400 degrees C., the oxidn. of the coke is delayed in the upper part of the supola.
FR7520796A 1975-07-02 1975-07-02 Coke for foundry cupolas - coated with molten cupola slag before use to retard its oxidn. in upper part of cupola Granted FR2330769A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7520796A FR2330769A1 (en) 1975-07-02 1975-07-02 Coke for foundry cupolas - coated with molten cupola slag before use to retard its oxidn. in upper part of cupola

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7520796A FR2330769A1 (en) 1975-07-02 1975-07-02 Coke for foundry cupolas - coated with molten cupola slag before use to retard its oxidn. in upper part of cupola

Publications (2)

Publication Number Publication Date
FR2330769A1 true FR2330769A1 (en) 1977-06-03
FR2330769B1 FR2330769B1 (en) 1979-06-15

Family

ID=9157405

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7520796A Granted FR2330769A1 (en) 1975-07-02 1975-07-02 Coke for foundry cupolas - coated with molten cupola slag before use to retard its oxidn. in upper part of cupola

Country Status (1)

Country Link
FR (1) FR2330769A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006015597A1 (en) * 2004-08-09 2006-02-16 Kim Dam-Johansen Encapsulated solid fuel for mineral melting furnaces

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006015597A1 (en) * 2004-08-09 2006-02-16 Kim Dam-Johansen Encapsulated solid fuel for mineral melting furnaces

Also Published As

Publication number Publication date
FR2330769B1 (en) 1979-06-15

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Legal Events

Date Code Title Description
ST Notification of lapse