FR2252998A1 - Hardened cement material from coal flue gases - scrubbed with alkaline earth hydroxide, giving suspension of fly-ash and alkaline earth hydroxide and sulphite - Google Patents

Hardened cement material from coal flue gases - scrubbed with alkaline earth hydroxide, giving suspension of fly-ash and alkaline earth hydroxide and sulphite

Info

Publication number
FR2252998A1
FR2252998A1 FR7342566A FR7342566A FR2252998A1 FR 2252998 A1 FR2252998 A1 FR 2252998A1 FR 7342566 A FR7342566 A FR 7342566A FR 7342566 A FR7342566 A FR 7342566A FR 2252998 A1 FR2252998 A1 FR 2252998A1
Authority
FR
France
Prior art keywords
alkaline earth
earth hydroxide
ash
suspension
fly
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
FR7342566A
Other languages
French (fr)
Other versions
FR2252998B1 (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.)
IU CONVERSION SYSTEMS
Original Assignee
IU CONVERSION SYSTEMS
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 IU CONVERSION SYSTEMS filed Critical IU CONVERSION SYSTEMS
Priority to FR7342566A priority Critical patent/FR2252998A1/en
Publication of FR2252998A1 publication Critical patent/FR2252998A1/en
Application granted granted Critical
Publication of FR2252998B1 publication Critical patent/FR2252998B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/02—Agglomerated materials, e.g. artificial aggregates
    • C04B18/021—Agglomerated materials, e.g. artificial aggregates agglomerated by a mineral binder, e.g. cement
    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/062—Purification products of smoke, fume or exhaust-gases
    • C04B18/064—Gypsum
    • 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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/18—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mixtures of the silica-lime type
    • 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
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Treating Waste Gases (AREA)

Abstract

The title material comprises the set hardened reaction prods. of 0.25-70 alkaline-earth hydroxide 10-99.5 or fly ash and 0.25-70 wt.% alkaline-earth sulphate. Coal-burner flue gases are desulphurised by chemical treatment in a scrubber yielding an aq. suspension of alkaline-earth carbonates, hydroxides or oxides, and this suspension is treated by removing water and adding fly-ash and alkaline earth hydroxides, the solids content of the treated suspension being 30-90 wt.%. The material is opt. shaped into granules which are kept until they harden sufficiently for use as aggregate.
FR7342566A 1973-11-29 1973-11-29 Hardened cement material from coal flue gases - scrubbed with alkaline earth hydroxide, giving suspension of fly-ash and alkaline earth hydroxide and sulphite Granted FR2252998A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7342566A FR2252998A1 (en) 1973-11-29 1973-11-29 Hardened cement material from coal flue gases - scrubbed with alkaline earth hydroxide, giving suspension of fly-ash and alkaline earth hydroxide and sulphite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7342566A FR2252998A1 (en) 1973-11-29 1973-11-29 Hardened cement material from coal flue gases - scrubbed with alkaline earth hydroxide, giving suspension of fly-ash and alkaline earth hydroxide and sulphite

Publications (2)

Publication Number Publication Date
FR2252998A1 true FR2252998A1 (en) 1975-06-27
FR2252998B1 FR2252998B1 (en) 1980-08-14

Family

ID=9128456

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7342566A Granted FR2252998A1 (en) 1973-11-29 1973-11-29 Hardened cement material from coal flue gases - scrubbed with alkaline earth hydroxide, giving suspension of fly-ash and alkaline earth hydroxide and sulphite

Country Status (1)

Country Link
FR (1) FR2252998A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2747946A1 (en) * 1996-04-30 1997-10-31 Lab Sa METHOD FOR THE TREATMENT OF SOLID RESIDUES BY BLEEDING WET GAS PURIFICATION SYSTEMS
CN114280268A (en) * 2021-11-11 2022-04-05 国家电投集团宁夏能源铝业有限公司临河发电分公司 System and method for managing coking condition in boiler based on Alot

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2747946A1 (en) * 1996-04-30 1997-10-31 Lab Sa METHOD FOR THE TREATMENT OF SOLID RESIDUES BY BLEEDING WET GAS PURIFICATION SYSTEMS
WO1997041080A1 (en) * 1996-04-30 1997-11-06 Lab S.A. Method for treating solid waste materials from wet gas cleaning systems blowoff
CN114280268A (en) * 2021-11-11 2022-04-05 国家电投集团宁夏能源铝业有限公司临河发电分公司 System and method for managing coking condition in boiler based on Alot
CN114280268B (en) * 2021-11-11 2024-03-08 国家电投集团宁夏能源铝业有限公司临河发电分公司 Alot-based boiler internal coking condition management system and method

Also Published As

Publication number Publication date
FR2252998B1 (en) 1980-08-14

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Legal Events

Date Code Title Description
ST Notification of lapse