JPS5654247A - Preparing crystallized aggregate based on sewage sludge - Google Patents
Preparing crystallized aggregate based on sewage sludgeInfo
- 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
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
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)
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 |
-
1979
- 1979-10-09 JP JP54129452A patent/JPS5933546B2/en not_active Expired
Cited By (3)
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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