JPS5654247A - Preparing crystallized aggregate based on sewage sludge - Google Patents

Preparing crystallized aggregate based on sewage sludge

Info

Publication number
JPS5654247A
JPS5654247A JP12945279A JP12945279A JPS5654247A JP S5654247 A JPS5654247 A JP S5654247A JP 12945279 A JP12945279 A JP 12945279A JP 12945279 A JP12945279 A JP 12945279A JP S5654247 A JPS5654247 A JP S5654247A
Authority
JP
Japan
Prior art keywords
sewage sludge
cao
sio
crystallized
melted
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
JP12945279A
Other languages
Japanese (ja)
Other versions
JPS5933546B2 (en
Inventor
Mitsuo Kawase
Takeshi Majima
Mitsuo Ibuki
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.)
NGK Insulators Ltd
Original Assignee
NGK Insulators Ltd
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 NGK Insulators Ltd filed Critical NGK Insulators Ltd
Priority to JP54129452A priority Critical patent/JPS5933546B2/en
Publication of JPS5654247A publication Critical patent/JPS5654247A/en
Publication of JPS5933546B2 publication Critical patent/JPS5933546B2/en
Expired 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
    • C04B18/04—Waste materials; Refuse
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Sludge (AREA)
  • Glass Compositions (AREA)

Abstract

PURPOSE: To provide a crystallized aggregate having excellent mechanical strength and chemical resistance by a method wherein a sewage sludge essentially consisting of SiO2, Al2O3, Fe2O3 and CaO and regulated to a specific range of composition is melted, and the obtained nucleus-forming product is heat-treated under a specific condition.
CONSTITUTION: A sewage sludge having a main chemical composition of SiO2: 18W45wt%, Al2O3: 1W15wt%, Fe2O3; 1W35wt%, and CaO: 13W45wt% and the CaO/SiO2 ratio controlled to 0.6W1.3 is melted in a melting furnace. The molten product is kept at 850W950°C for 15min or more to form crystallization nuclei. The obtained nucleus-forming product is crystallized by being kept at 1,050W 1,200°C for 20min or more. This produces a high-strength crystallized aggregate.
COPYRIGHT: (C)1981,JPO&Japio
JP54129452A 1979-10-09 1979-10-09 Method for manufacturing crystallized aggregate using sewage sludge residue as raw material Expired JPS5933546B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54129452A JPS5933546B2 (en) 1979-10-09 1979-10-09 Method for manufacturing crystallized aggregate using sewage sludge residue as raw material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54129452A JPS5933546B2 (en) 1979-10-09 1979-10-09 Method for manufacturing crystallized aggregate using sewage sludge residue as raw material

Publications (2)

Publication Number Publication Date
JPS5654247A true JPS5654247A (en) 1981-05-14
JPS5933546B2 JPS5933546B2 (en) 1984-08-16

Family

ID=15009826

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54129452A Expired JPS5933546B2 (en) 1979-10-09 1979-10-09 Method for manufacturing crystallized aggregate using sewage sludge residue as raw material

Country Status (1)

Country Link
JP (1) JPS5933546B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60899A (en) * 1983-06-18 1985-01-05 Ngk Insulators Ltd Melt treating process for sludge
JPH03275539A (en) * 1990-03-23 1991-12-06 Kawasaki Heavy Ind Ltd Production of molten waste slag
JPH04317436A (en) * 1990-12-25 1992-11-09 Tsukishima Kikai Co Ltd Production of crystallized glass

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60899A (en) * 1983-06-18 1985-01-05 Ngk Insulators Ltd Melt treating process for sludge
JPH03275539A (en) * 1990-03-23 1991-12-06 Kawasaki Heavy Ind Ltd Production of molten waste slag
JPH04317436A (en) * 1990-12-25 1992-11-09 Tsukishima Kikai Co Ltd Production of crystallized glass

Also Published As

Publication number Publication date
JPS5933546B2 (en) 1984-08-16

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