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GB1128932A - Improvements in or relating to the thermal treatment of magnesite, dolomite or lime - Google Patents

Improvements in or relating to the thermal treatment of magnesite, dolomite or lime

Info

Publication number
GB1128932A
GB1128932A GB4306165A GB4306165A GB1128932A GB 1128932 A GB1128932 A GB 1128932A GB 4306165 A GB4306165 A GB 4306165A GB 4306165 A GB4306165 A GB 4306165A GB 1128932 A GB1128932 A GB 1128932A
Authority
GB
United Kingdom
Prior art keywords
separators
gas
magnesite
dolomite
combustion chamber
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
GB4306165A
Inventor
Karl Remmers
Josef Simon
Erich Eigner
Karl Leitner
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.)
RHEINSTAHL ECO GmbH
Original Assignee
RHEINSTAHL ECO GmbH
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 RHEINSTAHL ECO GmbH filed Critical RHEINSTAHL ECO GmbH
Publication of GB1128932A publication Critical patent/GB1128932A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2/00Lime, magnesia or dolomite
    • C04B2/10Preheating, burning calcining or cooling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B15/00Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
    • F27B15/003Cyclones or chain of cyclones
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D13/00Apparatus for preheating charges; Arrangements for preheating charges

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Furnace Details (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

1,128,932. Thermal treatment of magnesite, dolomite or lime. RHEINSTAHL ECO G.m.b.H. 11 Oct., 1965 [15 Oct., 1964], No. 43061/65. Heading C1A. Magnesite, dolomite or lime is subjected to a thermal treatment, e.g. at 1000-1670‹ C. to the point of deacidification (of magnesite, dolomite or lime) or sintering (of magnesite or dolomite) by conducting the material in the form of dust or fine granules, in counter-current with hot gas produced in a combustion chamber, through a plurality of centrifugal separators connected in series with or parallel to one another or in series/parallel arrangement relative to the flow of gas and/or the material drawn through the separators, the separators being adapted as required to be selectively connected in the said series, parallel or series/parallel arrangement by means of adjustable valves and by-pass pipes by which the material may be caused to by-pass one or more of the separators. The hot gas may be produced in an oil heated combustion chamber or a plurality of connected chambers and part of the gas drawn through the separators may be returned to the combustion chamber(s). Incompletely burnt gas may be produced in the combustion chamber and air required for complete combustion may be introduced into the gas flow at a point before or after the gas has passed through one or more of the separators. The material to be heat treated may be dried in a stream of hot gases which convey it to the separators. The residual heat in the treated material may be used to supply heat to air or other gas entering the combustion chamber. The material may be homogenized in a reaction container after the heat treatment. As shown in Fig. 2, air preheated by reaction product at 10 is passed into oil heated combustion chambers 1<SP>1</SP> and thence via cyclones 2-5 to dust extraction plant 6 where the product is recovered and passed to collecting chamber 9 and preheater 10. Combustion gases are withdrawn through the cyclones and dust extractor by means of fan 13 and partly recycled to the effluent from the combustion chambers in line 14. Material to be treated is supplied at 21 and first is dried in conduit 15. By means of valves 24, 26 and by-pass lines 25, 28 the material may be passed to line 14, line 14<SP>1</SP> or to the collector 9.
GB4306165A 1964-10-15 1965-10-11 Improvements in or relating to the thermal treatment of magnesite, dolomite or lime Expired GB1128932A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1964V0026970 DE1218927C2 (en) 1964-10-15 1964-10-15 Device for the thermal treatment of magnesite, dolomite and lime and process for their operation

Publications (1)

Publication Number Publication Date
GB1128932A true GB1128932A (en) 1968-10-02

Family

ID=7583043

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4306165A Expired GB1128932A (en) 1964-10-15 1965-10-11 Improvements in or relating to the thermal treatment of magnesite, dolomite or lime

Country Status (4)

Country Link
AT (1) AT254754B (en)
CS (1) CS152422B2 (en)
DE (1) DE1218927C2 (en)
GB (1) GB1128932A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2856648A1 (en) * 1978-01-18 1979-07-19 Lafarge Conseils METHOD FOR HEAT TRANSFER AND GGF. FOR THE TREATMENT OF CEMENT RAW MATERIALS AND THE EQUIPMENT FOR CARRYING OUT THIS PROCESS

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1934389B2 (en) * 1968-07-16 1981-05-07 P&rcaron;erovské strojírny N.P., P&rcaron;erov Device for burning powdery and fine-grained materials
DE1937533B2 (en) * 1969-07-24 1981-05-27 Rheinische Kalksteinwerke GmbH, 5603 Wülfrath Arrangement for burning fine-grained material according to the floating gas burning process
US3989482A (en) * 1971-06-11 1976-11-02 Polysius Ag Method for the removal of dust from exhaust gases
BE790039A (en) * 1971-10-23 1973-02-01 Rheinstahl Ag PROCESS FOR CALCINING THE PLASTER IN A CURRENT OF HEATING GAS. (
DE10224563A1 (en) * 2002-06-03 2003-12-18 Ulrich Duerasch Three-phase method and device for calcining or for lime burning and for the thermal treatment of free-flowing bulk materials, taking into account a particularly low-carbon production

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1083748B (en) * 1959-04-22 1960-06-15 Habra Werk Ott Kg Terminal strip for bag long seams
FR1371612A (en) * 1963-10-15 1964-09-04 Kloeckner Humboldt Deutz Ag Improved installation for heating fine grain products, in particular ground raw cement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2856648A1 (en) * 1978-01-18 1979-07-19 Lafarge Conseils METHOD FOR HEAT TRANSFER AND GGF. FOR THE TREATMENT OF CEMENT RAW MATERIALS AND THE EQUIPMENT FOR CARRYING OUT THIS PROCESS
FR2415281A1 (en) * 1978-01-18 1979-08-17 Lafarge Conseils HEAT TRANSFER PROCESS AND POSSIBLY TREATMENT OF A CEMENT CRU AND INSTALLATIONS FOR THE IMPLEMENTATION OF THIS PROCESS

Also Published As

Publication number Publication date
DE1218927B (en) 1966-06-08
CS152422B2 (en) 1973-12-19
AT254754B (en) 1967-06-12
DE1218927C2 (en) 1973-08-09

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