CN110317079A - A method of lightweight wall plate is prepared using sludge - Google Patents

A method of lightweight wall plate is prepared using sludge Download PDF

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Publication number
CN110317079A
CN110317079A CN201910686108.3A CN201910686108A CN110317079A CN 110317079 A CN110317079 A CN 110317079A CN 201910686108 A CN201910686108 A CN 201910686108A CN 110317079 A CN110317079 A CN 110317079A
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China
Prior art keywords
sludge
hole
plate
lightweight
vertical
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Pending
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CN201910686108.3A
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Chinese (zh)
Inventor
叶活耀
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叶活耀
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Priority to CN201910686108.3A priority Critical patent/CN110317079A/en
Publication of CN110317079A publication Critical patent/CN110317079A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00Clay-wares
    • C04B33/02Preparing or treating the raw materials individually or as batches
    • C04B33/13Compounding ingredients
    • C04B33/132Waste materials; Refuse; Residues
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00Clay-wares
    • C04B33/02Preparing or treating the raw materials individually or as batches
    • C04B33/13Compounding ingredients
    • C04B33/132Waste materials; Refuse; Residues
    • C04B33/1321Waste slurries, e.g. harbour sludge, industrial muds
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00Clay-wares
    • C04B33/02Preparing or treating the raw materials individually or as batches
    • C04B33/13Compounding ingredients
    • C04B33/132Waste materials; Refuse; Residues
    • C04B33/135Combustion residues, e.g. fly ash, incineration waste
    • C04B33/1352Fuel ashes, e.g. fly ash
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/02Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/10Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/049Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres completely or partially of insulating material, e.g. cellular concrete or foamed plaster
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/60Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes

Abstract

The present invention relates to a kind of methods for preparing lightweight wall plate using sludge, include material, proportion, process flow, material mixture ratio are as follows: sludge 60~70% discards dregs 15~20%, flyash 15~20%, and foaming agent is the 0.2~0.8% of total material;Process flow are as follows: 1) will be sieved after sludge, discarded dregs, flyash drying;2) ball milling is carried out respectively;3) it is measured respectively according to the ratio;4) material does stirring 2 minutes in blender;5) assembly mold, is laid with incombustible paper, and powder filling is simultaneously sent into sintering oven sintering;6) 40 DEG C of kiln discharges successively are cooled to by preheating, sintering, cooling three operation stages;7) lightweight wall plate green body takes out, and is cut into predetermined size and shape by drawing;8) it crosses, process vertical through holes, cross through hole, vertical threading via hole, lateral threading via hole;9) vertical reinforcement is put in vertical through holes, puts transverse steel in cross through hole;10) glues pouring machine is poured into vertical through holes and cross through hole;11) it conserves, examine, storage.

Description

A method of lightweight wall plate is prepared using sludge
Technical field
The present invention relates to a kind of methods for preparing lightweight wall plate using sludge, belong to industrial solid castoff and utilize and building Energy-saving wall Material Field, and in particular to it is a kind of using the solid waste such as sludge, discarded dregs, flyash, it is burnt by high temperature Again by being machined into a kind of lightweight wall plate with heat preservation, fire-proof function after knot.
Background technique
Sand(-)washing plant will generate a large amount of washed-out sand sludge in the process of sand, the sewage of industrial enterprise is produced by precipitating The domestic sludge of raw industrial sludge, city domestic sewage treatment plant settlement of sewage generation, it is harmful to environment, it is necessary to carry out Harmless treatment;
As urbanization, the speed-raising of urbanization, the reconstruction of the old city town in shanty town constantly expand, a large amount of castaway slag is produced Soil has biggish pollution to environment and underground water source;
The flyash of coal power plant discharge, belongs to solid waste, also has pollution to environment and water source;
On the other hand, China uses most important thermal insulating material of the B2 grades of combustible material polyphenylene heat insulation slabs as building energy conservation Material, it is cheap although its thermal insulation property is superior, it is easy for construction;But it is easy to that serious fire occurs: as Beijing is entreated Depending on the wildfire occurred during the construction of exterior insulation system of new address 2009-02-03;The prosperous 2011-02-03 in Shenyang ten thousand is drawn due to fireworks The wildfire built up and occurred using the skyscraper outer heat preservation system of many years risen;Shanghai Jiangzhou road 2010-11-15 Building exterior wall heat preserving decoration renovation during the wildfire etc. that occurs, be all caused by polyphenylene heat insulation slab.For these Wildfire, relevant departments use series of improving measures, from heat preservation, fire proofing material to building heat preservation and architecture-integral. Although country pays much attention to the fire safety problem of architectural design, new to have formulated " Code for fire protection design of buildings " GB 50016-2014;But It is that by practice in recent years, or based on polyphenylene heat insulation slab, inorganic heat insulation material only accounts for few a part, few at this In the inorganic heat insulation material of part, the mainly foam glass of rock wool, air-entrained concrete building block, foam concrete block and fritter Deng, the lightweight wall plate of bulk cannot be formed, wall, but also substitution insulating layer have not only been substituted, and can be prevented fires, it is also durable.
How sludge to be collected to be fabricated to solid waste such as discarded dregs, flyash and a kind of there is heat preservation, anti- Fiery, durable lightweight wall plate, had both solved the problem of environmental pollution of above-mentioned solid waste, and it is energy-efficient also to solve energy saving building Heat preservation, heat-insulated, the integrated wall problem of fire prevention, are the projects urgently studied.
The present invention attempts to carry out existing energy saving building insulating wall material technology innovation, substitution, designs a kind of utilization The preparation of the solid waste such as sludge have heat preservation, fire-proof function lightweight wall plate method, both solved sludge, discarded dregs, The problem of environmental pollution of the solid waste such as flyash, also solve energy saving building heat preservation, it is heat-insulated, fire prevention integrated wall The deficient problem of material, improves the thermal insulation property of wall, fire protecting performance, and endurance quality has accomplished that thermal insulation material is same with building Service life.
Summary of the invention
The technical scheme of the present invention is realized as follows: a kind of method for preparing lightweight wall plate using sludge, feature exist In: it include material and proportion and manufacturing process flow, material mixture ratio are as follows: sludge 60~70% discards dregs 15~20%, powder Coal ash 15~20%, foaming agent are the 0.2~0.8% of total material;Process flow are as follows:
1) it will be sieved after sludge, discarded dregs, flyash drying, remove metal impurities;
2) sludge, discarded dregs, flyash are subjected to ball milling respectively, the fineness of dry powder is 200 mesh, and dry powder is sent to enter feed bin It lays in, is stand-by;
3) sludge, discarded dregs, flyash, foaming agent are measured respectively according to the ratio;
4) material measured is launched in blender, does stirring 2 minutes;
5) sintering mold is assembled, incombustible paper is laid on die bottom plate, dry mash is loaded on incombustible paper, it will be equipped with dry The mold of powder is sent into continuous sintering tunnel oven and is sintered;
6) dry mash will be equipped with dry successively by heating preheating, three Isothermal sinter, cooling down operation stages in kiln Powder is sintered in continous way fired tunnel kiln, in heating warm-up phase, 9~25 DEG C/min of rate of heating, when temperature reaches When to 1130 DEG C, into the Isothermal sinter stage;The temperature range in Isothermal sinter stage fluctuates between 1130 DEG C~1280 DEG C, permanent Warm sintering time 0.5h~1.2h, the SiO of different wastes2、Al2O3、CaO+MgO、K2The content of O+NaO is different, takes difference Isothermal sinter temperature;In the cooling down stage, rate of temperature fall is 2~11 DEG C/min, belongs to slow cooling, prevents sintering wallboard Stress cracking is generated, until being cooled to 40 DEG C in kiln;
7) lightweight wall plate sintered is taken out out of mold;
8) lightweight wall plate is cut into defined size and shape by drawing;
9) it crosses to the baked light-weight wallboard 1 of well cutting, processes elongated recessed of elongated boss 2, one Slot 3, several vertical through holes 4, several cross through hole 5 and vertical threading via hole 9, lateral threading via hole 10;
10) vertical reinforcement 6 and fixation are placed in several vertical through holes 4, put lateral steel in several cross through hole 5 Muscle 7 and fixation;
11) metal connecting piece 11 for being located at 5 both ends of cross through hole is weldingly connected with transverse steel 7;
12) it after placing vertical reinforcement 6 and transverse steel 7, is poured into several vertical through holes 4 and several cross through hole 5 Self-leveling glues pouring machine 8;
13) it will be poured the lightweight wall plate after Self-leveling glues pouring machine 8, and was sent into curing kilns and carries out steam curing or nature Maintenance;
14) lightweight wall plate conserved carries out presentation quality, dimensional discrepancy, mechanical property, thermal property, fire protecting performance etc. It tests;
15) to qualified product packaging;
16) product warehousing.
Using the method produce lightweight wall plate be by baked light-weight wallboard 1, boss 2, groove 3, several vertical through holes 4, Several cross through hole 5, several vertical reinforcements 6, several transverse steels 7, glues pouring machine 8, vertical threading via hole 9, laterally threading Through-hole 10, several metal connecting pieces 11 are constituted.
The foaming agent is silicon carbide, and the incombustible paper is aluminum silicate fiber paper.
The sludge be washed-out sand sludge, industrial sludge, domestic sludge it is one or more.
Detailed description of the invention:
Fig. 1 is a kind of process flow chart for the method that lightweight wall plate is prepared using sludge of the present invention;
Fig. 2 is to be illustrated using a kind of lightweight wall plate solid for the method production for preparing lightweight wall plate using sludge of the present invention Figure;
Fig. 3 is to be illustrated using a kind of lightweight wall plate left view for the method production for preparing lightweight wall plate using sludge of the present invention Figure;
Fig. 4 is to overlook signal using a kind of lightweight wall plate for the method production for preparing lightweight wall plate using sludge of the present invention Figure;
Fig. 5 is to be shown using a kind of lightweight wall plate A-A section for the method production for preparing lightweight wall plate using sludge of the present invention It is intended to;
Fig. 6 is to be shown using a kind of lightweight wall plate B-B section for the method production for preparing lightweight wall plate using sludge of the present invention It is intended to;
Fig. 7 is using a kind of connector 11 of the lightweight wall plate for the method production for preparing lightweight wall plate using sludge of the present invention C-C diagrammatic cross-section;
Fig. 8 is using a kind of connector 11 of the lightweight wall plate for the method production for preparing lightweight wall plate using sludge of the present invention Schematic front view.
In figure: 1 is baked light-weight wallboard
2 be boss
3 be groove
4 be vertical through holes
5 be cross through hole
6 be vertical reinforcement
7 be transverse steel
8 be glues pouring machine
9 be vertical threading via hole
10 be lateral threading via hole
11 be metal connecting piece
12 be connecting hole
Specific embodiment
The invention is realized in this way 1~Fig. 8 is described further with reference to the accompanying drawing: a kind of to be prepared gently using sludge The method of matter wallboard includes material and proportion and manufacturing process flow, material mixture ratio are as follows: sludge 60~70% discards dregs 15~20%, flyash 15~20%, foaming agent is the 0.2~0.8% of total material;Process flow are as follows:
1) it will be sieved after sludge, discarded dregs, flyash drying, remove metal impurities;
2) sludge, discarded dregs, flyash are subjected to ball milling respectively, the fineness of dry powder is 200 mesh, and dry powder is sent to enter feed bin It lays in, is stand-by;
3) sludge, discarded dregs, fly ash foamed dose are measured respectively according to the ratio;
4) material measured is launched in blender, does stirring 2 minutes;
5) sintering mold is assembled, incombustible paper is laid on die bottom plate, dry mash is loaded on incombustible paper, dry powder will be housed The mold of material is sent into continuous sintering tunnel oven and is sintered;
6) dry mash is in kiln successively by heating preheating, three Isothermal sinter, cooling down operation stages: pre- in heating Hot stage, 9~25 DEG C/min of rate of heating, when temperature reaches 1130 DEG C, into the Isothermal sinter stage;The Isothermal sinter stage Temperature range fluctuated between 1130 DEG C~1280 DEG C, Isothermal sinter time 0.5h~1.2h, different trade wastes SiO2、Al2O3、CaO+MgO、K2The content of O+NaO is different, takes different Isothermal sinter temperature;In the cooling down stage, drop Warm rate is 2~11 DEG C/min, belongs to slow cooling, prevents sintering wallboard from generating stress cracking, until being cooled to 40 DEG C in kiln;
7) lightweight wall plate sintered is taken out out of mold;
8) lightweight wall plate is cut into defined size and shape by drawing;
9) it crosses to the baked light-weight wallboard 1 of well cutting, processes elongated recessed of elongated boss 2, one Slot 3, several vertical through holes 4, several cross through hole 5 and vertical threading via hole 9, lateral threading via hole 10;
10) vertical reinforcement 6 and fixation are placed in several vertical through holes 4, put lateral steel in several cross through hole 5 Muscle 7 is simultaneously fixed;
11) metal connecting piece 11 for being located at 5 both ends of cross through hole is weldingly connected with transverse steel 7;
12) it after placing vertical reinforcement 6 and transverse steel 7, is poured into several vertical through holes 4 and several cross through hole 5 Self-leveling glues pouring machine 8;
13) it will be poured the lightweight wall plate after Self-leveling glues pouring machine 8, and was sent into curing kilns and carries out steam curing or nature Maintenance;
14) lightweight wall plate conserved carries out presentation quality, dimensional discrepancy, mechanical property, thermal property, fire protecting performance etc. It tests;
15) to qualified product packaging;
16) product warehousing.
Using lightweight wall plate produced by the invention be by baked light-weight wallboard 1, boss 2, groove 3, several vertical through holes 4, Several cross through hole 5, several vertical reinforcements 6, several transverse steels 7, glues pouring machine 8, vertical threading via hole 9, laterally threading Through-hole 10, several metal connecting pieces 11 are constituted.
The foaming agent is silicon carbide;The incombustible paper is aluminum silicate fiber paper.
The sludge be washed-out sand sludge, industrial sludge, domestic sludge it is one or more.
The beneficial effect comprise that:
1) using a kind of method for preparing lightweight wall plate using sludge of the invention produce have heat preservation, it is heat-insulated, anti- The lightweight wall plate of fire, durable function is the technology innovation to existing energy saving building heat-preserving wall, substitution.This lightweight wall plate, Solve the serious quality problems such as the fire prevention of working procedure and exterior-wall heat insulation of exterior insulation, in the construction for carrying out energy saving building In the process, speed of application is greatly improved, building cost is considerably reduced, meanwhile, improve heat preservation, the heat-insulated, sound insulation of wall Performance, fire protecting performance have accomplished thermal insulation material and building same service life.Such baked light-weight wallboard has intensity height, water absorption rate Low, the advantages that thermal inertia is good, thermal insulation property is high, fire protecting performance belongs to incombustible material, durability is good, frost resistance is good, meet new edition The requirement of " Code for fire protection design of buildings " GB 50016-2014 (version in 2018).
2) a kind of method for preparing lightweight wall plate using sludge of the invention is used, sludge, discarded dregs, flyash are utilized Etc. a large amount of solid waste, fired through feedstock processing, reasonably combined, high temperature, it is machined again form, greatly solve ring Border protection problem, turns waste into wealth, and the benign cycle for reaching resource utilizes.

Claims (3)

1. a kind of method for preparing lightweight wall plate using sludge, it is characterised in that: include material and proportion and manufacturing process stream Journey, material mixture ratio are as follows: sludge 60~70% discards dregs 15~20%, flyash 15~20%, and foaming agent is total material 0.2~0.8%;Process flow are as follows:
1) it will be sieved after sludge, discarded dregs, flyash drying, remove metal impurities;
2) sludge, discarded dregs, flyash are subjected to ball milling respectively, the fineness of dry powder is 200 mesh, and dry powder pan feeding is sent to store in a warehouse It is standby, stand-by;
3) sludge, discarded dregs, flyash, foaming agent are measured respectively according to the ratio;
4) material measured is launched in blender, does stirring 2 minutes;
5) sintering mold is assembled, incombustible paper is laid on die bottom plate, dry mash is loaded on incombustible paper, dry mash will be housed Mold is sent into continuous sintering tunnel oven and is sintered;
6) dry mash is in kiln successively by heating preheating, three Isothermal sinter, cooling down operation stages: preheating rank in heating Section, 9~25 DEG C/min of rate of heating, when temperature reaches 1130 DEG C, into the Isothermal sinter stage;The temperature in Isothermal sinter stage Degree range fluctuates between 1130 DEG C~1280 DEG C, Isothermal sinter time 0.5h~1.2h, the SiO of different trade wastes2、 Al2O3、CaO+MgO、K2The content of O+NaO is different, takes different Isothermal sinter temperature;In the cooling down stage, rate of temperature fall For 2~11 DEG C/min, belong to slow cooling, prevents sintering wallboard from generating stress cracking, until being cooled to 40 DEG C in kiln;
7) lightweight wall plate sintered is taken out out of mold;
8) lightweight wall plate is cut into defined size and shape by drawing;
9) cross to the baked light-weight wallboard (1) of well cutting, process an elongated boss (2), one it is elongated recessed Slot (3), several vertical through holes (4), several cross through hole (5) and vertical threading via hole (9), lateral threading via hole (10);
10) vertical reinforcement (6) and fixation are placed in several vertical through holes (4), put transverse direction in several cross through hole (5) Reinforcing bar (7) and fixation;
11) metal connecting piece (11) for being located at cross through hole (5) both ends is weldingly connected with transverse steel (7);
12) after placing vertical reinforcement (6) and transverse steel (7), into several vertical through holes (4) and several cross through hole (5) It is poured Self-leveling glues pouring machine (8);
13) it will be poured the lightweight wall plate after Self-leveling glues pouring machine (8), and was sent into curing kilns and carries out steam curing or naturally feeding Shield;
14) lightweight wall plate conserved carries out presentation quality, dimensional discrepancy, mechanical property, thermal property, fire protecting performance etc. and carries out It examines;
15) to qualified product packaging;
16) product warehousing.
2. a kind of method for preparing lightweight wall plate using sludge according to claim 1, it is characterised in that: use the method The lightweight wall plate of production is logical by baked light-weight wallboard (1), boss (2), groove (3), several vertical through holes (4), several transverse directions Hole (5), several vertical reinforcements (6), several transverse steels (7), glues pouring machine (8), vertical threading via hole (9), laterally threading Through-hole (10), several metal connecting pieces (11) are constituted.
3. a kind of method for preparing lightweight wall plate using sludge according to claim 1, it is characterised in that: the sludge For washed-out sand sludge, industrial sludge, domestic sludge it is one or more.
CN201910686108.3A 2019-07-29 2019-07-29 A method of lightweight wall plate is prepared using sludge Pending CN110317079A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910686108.3A CN110317079A (en) 2019-07-29 2019-07-29 A method of lightweight wall plate is prepared using sludge

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Application Number Priority Date Filing Date Title
CN201910686108.3A CN110317079A (en) 2019-07-29 2019-07-29 A method of lightweight wall plate is prepared using sludge

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CN110317079A true CN110317079A (en) 2019-10-11

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN112279677A (en) * 2020-12-30 2021-01-29 科达制造股份有限公司 High-doping-amount municipal sludge foamed ceramic and preparation method thereof

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CN1724446A (en) * 2005-06-22 2006-01-25 苏州赛可利新型材料有限公司 Material for wall, and method for processing wall brick by said material
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CN108314422A (en) * 2018-02-25 2018-07-24 上海鑫晶山建材开发有限公司 A kind of building waste, sewage plant sludge composite environmental-friendly brick and preparation method thereof
CN109437843A (en) * 2018-11-30 2019-03-08 上海市建筑科学研究院 The method for preparing sintering heat-reserving brick using original state wet mud

Cited By (1)

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CN112279677A (en) * 2020-12-30 2021-01-29 科达制造股份有限公司 High-doping-amount municipal sludge foamed ceramic and preparation method thereof

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