CN101913842B - Baked light-weight environmental-friendly bricks prepared from paper mill sludge and manufacturing method thereof - Google Patents
Baked light-weight environmental-friendly bricks prepared from paper mill sludge and manufacturing method thereof Download PDFInfo
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- 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
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- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention relates to baked light-weight environmental-friendly bricks prepared from paper mill sludge and a manufacturing method thereof. The method is characterized by comprising the following steps of: mixing the paper mill sludge, engineering waste sludge, river sludge, refuse ash, slag, ground quick lime, calcium sulfate, sodium carbonate, borax, ferrous sulphate, magnesium sulfate, Li high molecular heavy metal collector, water and the like serving as raw materials, stirring the mixture into a damp product by using a double-shaft mixer and extruding the damp product into a rectangular strip-shaped product by using a de-airing extruder; cutting and molding the extruded product by using a blank cutter; manufacturing paper mill sludge light-weight environmental-friendly bricks under the pressure of between 20 and 30 MPa; feeding the molded and naturally-dried light-weight environmental-friendly bricks into a tunnel kiln by using a battery car to bake the bricks; and obtaining light-weight environmental-friendly brick products after baking. The raw materials can be prepared into hollow bricks and sidewalk bricks with different specifications. The product has the advantages of light weight, high intensity, no pollution, low cost and good benefit.
Description
Technical field
The present invention relates to a kind of baked light-weight environmental-friendly bricks of producing with paper mill sludge; Specifically it is with the papermaking sludge discharged; Through the dried mud powder after the dehydration, the useless body refuse of engineering, river surge silt, cinder and slag is the baked light-weight environmental-friendly bricks of main material production, belongs to the refuse disposal field.
The invention still further relates to the manufacturing approach of this baked light-weight environmental-friendly bricks.
Background technology
The sanitary sewage that discharge in the living area in the paper mill sludge industrial wastewater that to be the paper mill produce in manufacturing various paper product processes and the factory; A kind of hybrid solid discarded object of the floating foam gained that deposit that produces in process Wastewater Treatment Plant employing physics, the chemical method processing procedure and sewage surface drift out; The composition of the paper mill sludge equal more complicated of originating; Wherein contain heavy metal element and poisonous and harmful substances such as a large amount of cadmiums, mercury, lead, chromium, arsenic, nickel, zinc, copper, cyanide, pathogen, parasitic ovum, organic pollution; Along with the production and the rapid development of economy of China's paper industry, the quantity of papermaking enterprise increases year by year, and scale is increasing; The discharge value of the sanitary sewage in paper-making industrial waste water and living area is increasing, and the generation of paper mill sludge also increases sharply.The paper mill sludge of a large amount of accumulation not only will take a large amount of soils, and harmful components wherein such as heavy metal; Copper, chromium, arsenic, mercury, cadmium, lead, nickel, zinc etc.; Pathogen, parasitic ovum, organic pollution and foul smell will become big public hazards that influence urban environmental hygiene; Effective treatment technology is all actively being sought by governments at all levels and relevant department; China mainly is to adopt burying method to handle, to reduce the pollution to environment to the processing method of paper mill sludge at present.But, the composition more complicated of paper mill sludge, moisture content is high, heavy metal particularly, if unprocessed direct landfill, will contaminated soil and groundwater resources, easy generation of secondary pollution causes serious harm to environment.Long-term landfill need take a large amount of land resources; How properly scientifically paper mill sludge to be carried out treatment and disposal; Make it reach minimizing, stabilizing, innoxious and resource, become a big research topic of scientific and technical personnel's extensive concern of China and even whole world environment circle.Current common recognition is exactly that paper mill sludge is effectively utilized as a kind of resource, when administering pollution, turns waste into wealth.
Summary of the invention
The object of the invention provides a kind of paper mill sludge, the useless body refuse of engineering, river surge silt, cinder and slag of using to be the main material production baked light-weight environmental-friendly bricks just for the problem that solves above-mentioned existence; Thereby solved the pollution of paper mill sludge, the useless body refuse of engineering, river surge silt, cinder, slag to environment; Also solved the resource regeneration of paper mill sludge, the useless body refuse of engineering, river surge silt, cinder and slag; Turn waste into wealth; Change evil and be benefit, realized that the resource benign cycle of refuse utilizes.
The present invention also provides the manufacturing approach of this baked light-weight environmental-friendly bricks.
A kind of baked light-weight environmental-friendly bricks of producing with paper mill sludge, it is processed by the following weight proportion raw material:
The sanitary sewage that discharge in the living area in the described paper mill sludge powder industrial wastewater that to be the paper mill produce in producing the paper product process and the factory; Through a kind of mixed waste of separating after Wastewater Treatment Plant's processing; Through dehydration, deodorizing, disinfection, chelation treatment, drying, after abrasive dust, sorting, process particle diameter again and be powder less than 2mm;
The useless body refuse powder of described engineering is a kind of solid waste of the argillaceous sand stone that discharges in the discarded body refuse that discharges when digging basis and underground parking in the dwelling construction and the urban engineering project; Through sorting, fragmentation, pulverizing, screening, drying, process particle diameter again after abrasive dust, the sorting and be powder less than 2mm;
Described river surge silt powder is that all are poured into the useless husky a kind of discarded object of a large amount of mud that discharges in the row cleaning regulation process by the river of sewage pollution; Close processing, drying through dehydration, deodorizing, disinfection, huge legendary turtle, process particle diameter again after abrasive dust, the sorting and be powder less than 2mm;
Described cinder powder is the waste residue of discharging behind the domestic garbage burning electricity generation, behind sorting, pulverizing, magnetic separation removal old metal, processes particle diameter through abrasive dust, sorting and is the powder less than 2mm;
Described slag powder is the waste residue that discharge briquette boiler burning back, remove old metal through fragmentation, sorting, pulverizing, magnetic separation after, to process particle diameter be the powder less than 2mm for abrasive dust, sorting again.
A kind of manufacturing approach of the baked light-weight environmental-friendly bricks of producing with paper mill sludge, it is undertaken by following step:
(a) with the paper mill sludge powder of 30～40 weight portions; The engineering of 28～38 weight portions body refuse powder that gives up; The river surge silt powder of 25～35 weight portions; The cinder powder of 18～28 weight portions; The slag powder of 18～28 weight portions; The quicklime powder of 12～18 weight portions; The calcium sulfate of 3～6 weight portions; 1～2 weight parts of sodium carbonate; The borax of 1～2 weight portion; The ferrous sulfate of 2～3 weight portions; The magnesium sulfate of 5～9 weight portions; 0.5 the Li high molecular heavy metals trapping agent of～0.8 weight portion and the water of 15～25 weight portions are raw material; Adopt the double-shaft mixing agitator stirring to be moist shape and be squeezed into rectangular stripe shape with de-airing extruder; Through the blank cutter excision forming; Under the pressure of 20～30Mpa, make the paper mill sludge baked light-weight environmental-friendly bricks base of moulding; Carry out air dry
(b) sending (a) paper mill sludge light-weight environment-friendly adobe after air dry to tunnel cave again carries out roasting and processes paper mill sludge baked light-weight environmental-friendly bricks product.
Raw material with the environmental protection brick also can be processed paper mill sludge baked light-weight building-block.
Described quicklime and calcium sulfate powder are the powder of powder particle diameter less than 0.08mm.
It is the primary raw material of baked light-weight environmental-friendly bricks that the present invention adopts paper mill sludge, the useless body refuse of engineering, river surge silt, cinder, slag, is that paper mill sludge self contains a large amount of organic substances, can play the effect of burning.Utilize borax, calcium lime powder for disinfection and calcium sulfate as curing compound, utilize cinder and slag to replace coal internal combustion raw material as paper mill sludge sintering environmental protection brick, be because cinder and slag itself contain a certain amount of fixed carbon and volatile matter; Be generally 20%～30%; Its calorific value is 1300～2500KJ/kg, can burn, and is the castoff regenerative utilization; Be energy conservation, protect environment again.Meet the technical requirements of national energy-saving and emission-reduction, development low-carbon economy.Cause the adobe of paper mill sludge light-weight environment-friendly with the chemical raw material of quicklime, calcium sulfate, sodium carbonate, borax, the agent of Li high molecular heavy metals trapping is mixed, the rate of drying of adobe is accelerated, performance is good, utilizes tunnel cave to carry out roasting.Use ferrous sulfate to be reducing agent, magnesium sulfate is ferrous retention agent, and the foul smell in the mud is fully decomposed, and reaches the purpose of rapid deodorizing.
The manufacturing approach of paper mill sludge baked light-weight environmental-friendly bricks of the present invention; Be with carry out disinfection sterilization and adopt the agent of Li high molecular heavy metals trapping that it is carried out chelation treatment of paper mill sludge with borax, calcium lime powder; Make paper mill sludge reach the reinforcement chemical stabilization; The heavy metal element of high-load is captured, generates the huge legendary turtle compound of cross-linked structure, realized the efficient stableization of paper mill sludge.Mixes with the useless body refuse powder of engineering, river surge silt powder, slag powder, cinder powder, calcium sulfate, sodium carbonate, ferrous sulfate, magnesium sulfate and water and to utilize de-airing extruder to be squeezed into rectangular stripe shape after adopting the biaxial rneader stirring to be moist shape; Through the blank cutter excision forming; Under the pressure of 20～30Mpa, process the adobe of paper mill sludge light-weight environment-friendly, carry out air dry after 7 days.Again moulding after sending tunnel cave to, the paper mill sludge light-weight environment-friendly adobe electricity consumption bottle car of air dry is carried out roasting.After roasting, process paper mill sludge baked light-weight environmental-friendly bricks product.Thereby solved the high problem of handling difficulty of paper mill sludge content of beary metal, realized the resource recycling of paper mill sludge, to reduce pollution to natural environment.
Also can be made into the building-block and the pavement bricks of different size with raw material of the present invention.
The paper mill sludge baked light-weight environmental-friendly bricks of producing according to the present invention technology, through the relevant building materials quality detection department check of national regulation, each item technical indicator all reaches the construction material standard-required of national regulation.
Building materials research institute building material product quality inspection center testing result is following through Guangdong Province:
Paper mill sludge baked light-weight environmental-friendly solid brick detects: according to Guangzhou capital construction commission file: (2002) No. 15 literary compositions of fringe building and GB13545-2003 standard.Specification: 240x115x53mm.
A) compressive strength: 10 average: 14Mpa, monolithic minimum value: 11.03Mpa.
B) rupture strength: mean value: 3.3Mpa, monolithic minimum of a value: 2.8Mpa.
C) water absorption rate 16.6%.
D) bulk density is: 1462Kg/m
3
E) radioactivity: internal radiation: 0.10, external exposure: 0.53, be superior to national standard.Test basis: GB6566-2001 " the radioactive material nucleic is limited the quantity of "
The test basis of paper mill sludge light-weight hollow building block made: GB/T15229-2002, specification is: 390X190X190mm, compression strength mean value is: 8.0Mpa, the monolithic minimum of a value is: 6.8Mpa, dry apparent density is: 1000Kg/m
3, contract with dry rate is: 0.023%, all be better than 5.0 grades standard of national regulation.
Owing to take technique scheme technology of the present invention compared with present technology to have following advantage and effect:
A) paper mill sludge baked light-weight environmental-friendly bricks of the present invention is all sealed the high-load toxic heavy metal of paper mill sludge up for safekeeping in adobe in high-temperature calcination process, has killed all harmful bacterias through high temperature, has avoided secondary pollution.And brick do not have the peculiar smell hole many, has certain sound insulation, effect of heat insulation etc.; Because the relative density of paper mill sludge, slag, cinder is littler than clay, therefore, each piece light-weight environment-friendly brick is than more than the light 0.7kg of clay solid brick, and it is lighter more than 35% than stone flour cement block to process building-block.Therefore can alleviate the deadweight of building and the application life of prolongation high-rise building;
b) Production process is simple, no waste emissions, in line with national energy conservation, low-carbon economy and circular economy policy and the State Council Document No. 66 "On vigorously develop energy, land, water, materials, waste utilization, Paul ? temperature, heat insulation wall materials and other new construction "requirement spirit, and less investment, low cost, good benefits;
C) utilize paper mill sludge, river surge silt, slag, cinder brickmaking to substitute traditional solid clay brick, be green, environmental protection, energy-saving building material, development prospect is widely arranged;
D) adopt paper mill sludge cinder and slag as the internal combustion roasting raw material of light-weight environment-friendly brick, can make full use of flammable industrial wastes such as paper mill sludge cinder and slag, energy conservation reduces cost, and reduces environment pollution again.Also can accelerate the rate of roasting of tunnel cave, quicken the turnover of tunnel cave, improve the quality and the output of finished bricks.Shorten the body drying cycle, alleviate the apparent density of finished bricks.Reduce coefficient of thermal conductivity and heat waste, improve the heat-insulation and heat-preservation ability; Increase the benefit.
E) solved paper mill sludge, river surge silt, cinder and slag need take a large amount of land resources and cause secondary pollution easily in the landfill process a difficult problem; Both protected environment; Practiced thrift the soil again, made the resource regeneration rate of paper mill sludge reach 100%.
The specific embodiment
Embodiment 1
The sanitary sewage that discharge in the living area in the industrial wastewater that the paper mill is produced in producing the paper product process and the factory; Through a kind of mixed waste of separating after Wastewater Treatment Plant's processing; Through dehydration, deodorizing, disinfection, chelation treatment, drying, after abrasive dust, sorting, process particle diameter again and be paper mill sludge powder less than 2mm;
A kind of solid waste of the argillaceous sand stone that discharges in discarded body refuse that discharges when digging basis and underground parking in the dwelling construction and the urban engineering project; Through sorting, fragmentation, pulverizing, screening, drying, process particle diameter again after abrasive dust, the sorting and be the body refuse powder that gives up less than the engineering of 2mm;
All are poured into the useless husky a kind of discarded object of a large amount of mud that discharges in the row cleaning regulation process by the river of sewage pollution, close processing, drying, process particle diameter again after abrasive dust, the sorting and be river surge silt powder less than 2mm through dehydration, deodorizing, disinfection, huge legendary turtle;
With the waste residue of discharging behind the domestic garbage burning electricity generation, behind sorting, pulverizing, magnetic separation removal old metal, process particle diameter through abrasive dust, sorting and be cinder powder less than 2mm;
The waste residue that briquette boiler burning back is discharged, remove old metal through fragmentation, sorting, pulverizing, magnetic separation after, to process particle diameter be the slag powder less than 2mm for abrasive dust, sorting again.
The useless body refuse powder 38kg of paper mill sludge powder 30kg, engineering, river surge silt powder 25kg, cinder powder 28kg, slag powder 18kg, particle diameter that gets above-mentioned preparation is quicklime powder 18kg, calcium sulfate 3kg, sodium carbonate 2kg, borax 1kg, ferrous sulfate 3kg, magnesium sulfate 5kg, Li high molecular heavy metals intercalating agent 0.8kg and the water 15kg of-0.08mm; Utilize de-airing extruder to be squeezed into rectangular stripe shape after above-mentioned raw materials mix adopted biaxial rneader to stir to be moist shape; Through the blank cutter excision forming; Under the pressure of 28Mpa, process the adobe of paper mill sludge light-weight environment-friendly; Carry out air dry after 7 days; Again moulding is carried out roasting after the light-weight environment-friendly adobe electricity consumption bottle car of air dry is sent tunnel cave to, after roasting, process paper mill sludge baked light-weight environmental-friendly bricks product.Mean compressive strength is after testing: 14Mpa, rupture strength is: 3.3Mpa.Water absorption rate 16.6%, bulk density 1462kg/m
3, radioactivity: internal radiation 0.10, external exposure 0.53, requirement all is up to state standards.
Embodiment 2
The useless body refuse powder 36kg of paper mill sludge powder 35kg, engineering, river surge silt powder 30kg, cinder powder 25kg, slag powder 25kg, the particle diameter of getting embodiment 1 are quicklime powder 15kg, calcium sulfate powder 4.5kg, sodium carbonate 1.5kg, borax 1.5kg, ferrous sulfate 2.5kg, magnesium sulfate 7kg, Li high molecular heavy metals trapping agent 0.6kg and the water 20kg of 0.08mm; Utilize de-airing extruder to be squeezed into rectangular stripe shape after above-mentioned raw materials mix adopted biaxial rneader to stir to be moist shape; Through the blank cutter excision forming; Under the pressure of 29Mpa, process the adobe of paper mill sludge light-weight environment-friendly; Carry out air dry after 7 days; Again moulding is carried out roasting after the paper mill sludge environmental protection adobe of air dry is sent tunnel cave to battery truck, after roasting, process paper mill sludge baked light-weight environmental-friendly bricks product.The average compressive strength testing: 12Mpa, bending strength: 2.9Mpa.
Embodiment 3
The useless body refuse powder 28kg of paper mill sludge powder 40kg, engineering, river surge silt powder 35kg, cinder powder 18kg, slag powder 28kg, the particle diameter of getting embodiment 1 are quicklime powder 12kg, calcium sulfate powder 6kg, sodium carbonate 1kg, borax 2kg, ferrous sulfate 2kg, magnesium sulfate 8kg, Li high molecular heavy metals trapping agent 0.5kg and the water 25kg of 0.08mm; Use the mechanical oscillation extrusion modling after above-mentioned raw materials mix adopted biaxial rneader to stir to be moist shape; Under the pressure of 30Mpa, process the paper mill sludge light-weight hollow building block made; Carry out air dry after 7 days; Again moulding is carried out roasting after the paper mill sludge light-weight hollow building block made of air dry is sent tunnel cave to battery truck, after roasting, process paper mill sludge light-weight hollow building block made product.Through detecting mean compressive strength be: 8.0Mpa, the monolithic minimum value is: 6.8Mpa, dry apparent density is: 1000kg/m
3, contract with dry rate is: 0.023%, all be superior to 5.0 grades standard of national regulation.
Embodiment 4
The useless body refuse powder 32kg of paper mill sludge powder 35kg, engineering, river surge silt powder 30kg, cinder powder 23kg, slag powder 23kg, the particle diameter of getting embodiment 1 are quicklime powder 15kg, calcium sulfate powder 5kg, sodium carbonate 1.5kg, borax 1.5kg, ferrous sulfate 2.5kg, magnesium sulfate 7kg, Li high molecular heavy metals trapping agent 0.7kg and the water 20kg of 0.08mm; Utilize de-airing extruder to be squeezed into rectangular stripe shape after above-mentioned raw materials mix adopted biaxial rneader to stir to be moist shape; Through the blank cutter excision forming; Under the pressure of 26Mpa, process the adobe of paper mill sludge light-weight environment-friendly; Carry out air dry after 7 days; Again moulding is carried out roasting after the paper mill sludge environmental protection adobe of air dry is sent tunnel cave to battery truck, after roasting, process paper mill sludge baked light-weight environmental-friendly bricks product.The average compressive strength testing: 13Mpa, bending strength: 3Mpa.
Embodiment 5
The useless body refuse powder 35kg of paper mill sludge powder 38kg, engineering, river surge silt powder 33kg, cinder powder 25kg, slag powder 25kg, the particle diameter of getting embodiment 1 are quicklime powder 16kg, calcium sulfate powder 6kg, sodium carbonate 1.8kg, borax 1.8kg, ferrous sulfate 2.8kg, magnesium sulfate 8kg, Li high molecular heavy metals trapping agent 0.8kg and the water 23kg of 0.08mm; Utilize de-airing extruder to be squeezed into rectangular stripe shape after above-mentioned raw materials mix adopted biaxial rneader to stir to be moist shape; Through the blank cutter excision forming; Under the pressure of 28Mpa, process the adobe of paper mill sludge light-weight environment-friendly; Carry out air dry after 7 days; Again moulding is carried out roasting after the paper mill sludge environmental protection adobe of air dry is sent tunnel cave to battery truck, after roasting, process paper mill sludge baked light-weight environmental-friendly bricks product.The average compressive strength testing: 14Mpa, bending strength: 3.5Mpa.
Claims (4)
1. baked light-weight environmental-friendly bricks of producing with paper mill sludge is characterized in that it is processed by the following weight proportion raw material:
The sanitary sewage that discharge in the living area in the described paper mill sludge powder industrial wastewater that to be the paper mill produce in producing the paper product process and the factory; Through a kind of mixed waste of separating after Wastewater Treatment Plant's processing; Through dehydration, deodorizing, disinfection, chelation treatment, drying, after abrasive dust, sorting, process particle diameter again and be powder less than 2mm;
The useless body refuse powder of described engineering is a kind of solid waste of the argillaceous sand stone that discharges in the discarded body refuse that discharges when digging basis and underground parking in the dwelling construction and the urban engineering project; Through sorting, fragmentation, pulverizing, screening, drying, process particle diameter again after abrasive dust, the sorting and be powder less than 2mm;
Described river surge silt powder is that all are poured into the useless husky a kind of discarded object of a large amount of mud that discharges in the row cleaning regulation process by the river of sewage pollution; Close processing, drying through dehydration, deodorizing, disinfection, huge legendary turtle, process particle diameter again after abrasive dust, the sorting and be powder less than 2mm;
Described cinder powder is the waste residue of discharging behind the domestic garbage burning electricity generation, through rolling behind sorting, pulverizing, the magnetic separation removal old metal, processes particle diameter through abrasive dust, sorting and is the powder less than 2mm;
Described slag powder is the waste residue that discharge briquette boiler burning back, remove old metal through fragmentation, sorting, pulverizing, magnetic separation after, to process particle diameter be the powder less than 2mm for abrasive dust, sorting again.
2. a kind of baked light-weight environmental-friendly bricks of producing with paper mill sludge according to claim 1 is characterized in that also can processing paper mill sludge baked light-weight building-block with the raw material of environmental protection brick.
3. a kind of baked light-weight environmental-friendly bricks of producing with paper mill sludge according to claim 1 is characterized in that described quicklime powder and calcium sulfate powder are the powder of powder particle diameter less than 0.08mm.
4. the manufacturing approach of a kind of baked light-weight environmental-friendly bricks of producing with paper mill sludge according to claim 1 is characterized in that it is undertaken by following step:
(a) be raw material with the paper mill sludge powder of 30～40 weight portions, the useless body refuse powder of engineering of 28～38 weight portions, the river surge silt powder of 25～35 weight portions, the cinder powder of 18～28 weight portions, the slag powder of 18～28 weight portions, the quicklime powder of 12～18 weight portions, calcium sulfate, 1～2 weight parts of sodium carbonate, the borax of 1～2 weight portion, the ferrous sulfate of 2～3 weight portions, the magnesium sulfate of 5～9 weight portions, the Li high molecular heavy metals trapping agent of 0.5～0.8 weight portion and the water of 15～25 weight portions of 3～6 weight portions; Adopt the double-shaft mixing agitator stirring to be moist shape and be squeezed into rectangular stripe shape with de-airing extruder; Through the blank cutter excision forming; Under the pressure of 20～30Mpa, make the paper mill sludge baked light-weight environmental-friendly bricks base of moulding, carry out air dry;
(b) sending (a) paper mill sludge light-weight environment-friendly adobe after air dry to tunnel cave again carries out roasting and processes paper mill sludge baked light-weight environmental-friendly bricks product.
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| CN102180698A (en) * | 2011-02-11 | 2011-09-14 | 李桓宇 | Sintered light environment-friendly brick produced from riverway bottom mud and manufacturing method thereof |
| CN102329110B (en) * | 2011-06-21 | 2012-12-05 | 东莞市保源达房地产开发有限公司 | Lightweight brick manufactured by utilizing paper mill sludge and manufacturing method thereof |
| CN108503334B (en) * | 2018-04-03 | 2020-12-25 | 河南理工大学 | High-dosage papermaking sludge aerated concrete block and preparation method thereof |
| CN110171956A (en) * | 2019-05-22 | 2019-08-27 | 福道联合(天津)大数据有限公司 | The method for preparing revetment brick using low concentration oil-polluted soils |
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| US20040040245A1 (en) * | 2002-04-11 | 2004-03-04 | Sinclair Robert F. | Building block and system for manufacture |
| CN1197807C (en) * | 2002-12-17 | 2005-04-20 | 昆明理工大学 | Technique for producing non-extrusion clayless solid slag sintering brick |
| CN100389089C (en) * | 2005-06-30 | 2008-05-21 | 赵家成 | Method for producing building insulated block utilizing sludge |
| CN101081732A (en) * | 2006-06-02 | 2007-12-05 | 林建国 | Stone powder sludge sintering brick and method for making the same |
| JP4962915B2 (en) * | 2007-03-06 | 2012-06-27 | 東京電力株式会社 | Manufacturing method of water retention block |
| CN100595044C (en) * | 2007-10-25 | 2010-03-24 | 南昌大学 | Method for producing light high strength sintered brick using city sludge and wet-discharged flyash |
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