GB1437448A - Method of and apparatus for reducing the alkali content of cement clinker - Google Patents

Method of and apparatus for reducing the alkali content of cement clinker

Info

Publication number
GB1437448A
GB1437448A GB4279073A GB4279073A GB1437448A GB 1437448 A GB1437448 A GB 1437448A GB 4279073 A GB4279073 A GB 4279073A GB 4279073 A GB4279073 A GB 4279073A GB 1437448 A GB1437448 A GB 1437448A
Authority
GB
United Kingdom
Prior art keywords
kiln
stream
microns
separator
preheater
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
GB4279073A
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.)
Allis Chalmers Corp
Original Assignee
Allis Chalmers Corp
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 Allis Chalmers Corp filed Critical Allis Chalmers Corp
Publication of GB1437448A publication Critical patent/GB1437448A/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
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/2016—Arrangements of preheating devices for the charge
    • F27B7/2025—Arrangements of preheating devices for the charge consisting of a single string of cyclones
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/60—Methods for eliminating alkali metals or compounds thereof, e.g. from the raw materials or during the burning process; methods for eliminating other harmful components

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Toxicology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Furnace Details (AREA)

Abstract

1437448 Preheating and burning cement ALLIS-CHALMERS CORP 12 Sept 1973 [13 Sept 1972] 42790/73 Heading F4B Cement clinker is produced in a rotary kiln 1. Gases, dust and volatilized alkalis leave the kiln as a stream having a temperature of at least 1800‹ F. The stream preheats raw material being fed to the kiln from a hopper 10 through a particle suspension type preheater 5 (which may be a cylindrical tower and/or a plurality of cyclone separators). From a hood 2, a portion of the stream leaving the kiln 1 is by-passed away from the preheater 5 through a separator 30. Water is sprayed into the separator 30 at 32 in sufficient quantity to lower the temperature to below 600‹ F. to obtain rapid freezing of volatilized alkalis to particles smaller than 10- 20 microns. From the separator 30, particles larger than 10-20 microns are returned to the kiln and the by-passed stream passes to a fine dust collector 22 where the alkali particles and dust particles smaller than 10-20 microns are separated. The main stream of gases &c. from the hood 2 passes upwardly through the preheater 5 and a cyclone dust collector 15, being drawn on by a fan 20 to the fine dust collector 22.
GB4279073A 1972-09-13 1973-09-12 Method of and apparatus for reducing the alkali content of cement clinker Expired GB1437448A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28859272A 1972-09-13 1972-09-13

Publications (1)

Publication Number Publication Date
GB1437448A true GB1437448A (en) 1976-05-26

Family

ID=23107783

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4279073A Expired GB1437448A (en) 1972-09-13 1973-09-12 Method of and apparatus for reducing the alkali content of cement clinker

Country Status (9)

Country Link
JP (1) JPS4969758A (en)
AR (1) AR195765A1 (en)
BR (1) BR7307083D0 (en)
CA (1) CA1006551A (en)
DE (1) DE2345758A1 (en)
ES (1) ES418715A1 (en)
FR (1) FR2198907B1 (en)
GB (1) GB1437448A (en)
ZA (1) ZA737122B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2262104A (en) * 1990-06-10 1993-06-09 Antonio M Celi Method and apparatus for the treatment of metal-laminated plastics scrap

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5411132A (en) * 1977-06-28 1979-01-27 Onoda Cement Co Ltd Method and apparatus for firing cement raw material
FR2446266B1 (en) * 1979-01-09 1985-07-12 Lafarge Conseils PROCESS AND INSTALLATION FOR THE MANUFACTURE OF CEMENT CLINKER
DE3403449A1 (en) * 1984-02-01 1985-08-01 Dyckerhoff Zementwerke Ag, 6200 Wiesbaden Apparatus for the heat treatment of fine-grained material
DE3411147A1 (en) * 1984-03-27 1985-10-10 Dyckerhoff Engineering GmbH, 6200 Wiesbaden Process for increasing the throughput rate in the preheating of cement raw meal
JP6338496B2 (en) * 2014-09-24 2018-06-06 太平洋セメント株式会社 Extraction cooling apparatus, chlorine bypass system using the same, and method for treating cement kiln extraction gas

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1471279B2 (en) * 1961-06-03 1971-04-01 Polysius Ag, 4723 Neubeckum PLANT FOR BURNING ALKALINE CONTAINING CEMENT RAW MATERIAL
US3692287A (en) * 1970-12-10 1972-09-19 Allis Chalmers Mfg Co Method and apparatus for removing alkali from cement system
GB1326163A (en) * 1971-02-22 1973-08-08 Smidth & Co As F L Methods of and plants for burning cement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2262104A (en) * 1990-06-10 1993-06-09 Antonio M Celi Method and apparatus for the treatment of metal-laminated plastics scrap

Also Published As

Publication number Publication date
AU6006573A (en) 1975-03-06
JPS4969758A (en) 1974-07-05
FR2198907A1 (en) 1974-04-05
AR195765A1 (en) 1973-10-31
DE2345758A1 (en) 1974-03-21
BR7307083D0 (en) 1974-07-25
CA1006551A (en) 1977-03-08
ES418715A1 (en) 1976-06-16
FR2198907B1 (en) 1976-10-01
ZA737122B (en) 1975-04-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee