CN106278351A - A kind of porous high-strength sintered brick and preparation technology thereof - Google Patents

A kind of porous high-strength sintered brick and preparation technology thereof Download PDF

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Publication number
CN106278351A
CN106278351A CN201610674062.XA CN201610674062A CN106278351A CN 106278351 A CN106278351 A CN 106278351A CN 201610674062 A CN201610674062 A CN 201610674062A CN 106278351 A CN106278351 A CN 106278351A
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dry
sludge
porous high
strength sintered
sintered brick
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CN106278351B (en
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张长森
朱宝贵
杨风玲
韩朋德
张莉
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Rui Jiangsu new Mstar Technology Ltd
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Yangcheng Institute of Technology
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    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • 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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/131—Inorganic additives
    • 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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/132—Waste materials; Refuse; Residues
    • C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
    • 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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/132—Waste materials; Refuse; Residues
    • C04B33/138—Waste materials; Refuse; Residues from metallurgical processes, e.g. slag, furnace dust, galvanic waste
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
    • C04B2235/3227—Lanthanum oxide or oxide-forming salts thereof
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/602—Making the green bodies or pre-forms by moulding
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74—Physical characteristics
    • C04B2235/77—Density
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • 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
    • Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Porous Artificial Stone Or Porous Ceramic Products (AREA)

Abstract

The present invention provides the preparation technology of a kind of porous high-strength sintered brick, relates to building material field, and this preparation technology includes raw material by weight percentage: 20%～70% is dried municipal sludge；15%～65% nickel slag；5%～15% is dried riverway sludge；1.5%～6.5% quick lime and 0.5%～1.5% lanthana; through special mixing, sintering etc. science and engineering skill; this preparation technology is with municipal sludge, nickel slag and riverway sludge as primary raw material; realize the effective utilization to industrial solid castoff; solve a process difficult problem for municipal sludge, nickel slag; being conducive to preserving the ecological environment and cultivated land resource, have good economic benefit and environmental benefit, added value of product is high.The present invention also provides for a kind of porous high-strength sintered brick, and it has relatively macro porosity, good thermal and insulating performance and bigger intensity, it is possible to meets the requirement of reality application, is easily used more widely.

Description

A kind of porous high-strength sintered brick and preparation technology thereof
Technical field
The present invention relates to a kind of building material field, and particularly to a kind of porous high-strength sintered brick and preparation technology thereof.
Background technology
Fired brick has had the history of more than 2,000 year in China, and up to now, it is still a kind of widely used wall Body material.Fired brick have raw material be easy to get, easily manufacture, with low cost, build the superiority such as flexible, heat insulation and defening effect is good by laying bricks or stones Can, and there is certain intensity, it is to apply one of most construction material at present.Fired common brick have from great, volume is little, The shortcomings such as energy consumption is high, efficiency of construction is low, replace fired common brick with sintered perforated brick and sintered hollow block, can make building Weight reduction about 30%, saves clay 20%～30%, saves fuel 10%～20%, and wall construction effect improves 40%, And improve the heat-and sound-insulating performance of brick.Generally under identical thermal property requires, the thickness of wall body ratio built by laying bricks or stones with porous brick is used About the thinning bat of body of wall that solid brick is built by laying bricks or stones, so promoting the use of porous brick and hollow brick is to speed up China's materials for wall and changes Leather, promotes one of important measures of materials for wall industrial technological advancement.
Current fired brick, mostly with natural clay as raw material, employs a large amount of land resource so that we depend on for existence Soil fewer and feweri, do not meet the requirement of sustainable development.Found that Sewage Plant processed solid precipitation produced by waste water later In thing municipal sludge ash in addition to silicon, ferrum, phosphorus and heavy metal, other chemical compositions are similar to the composition of clay, the most permissible Part replaces, it might even be possible to all replaces clay and prepares fired brick.The wet mud that China produces every year reaches tens00000000 tons.City City's mud contains substantial amounts of poisonous and harmful substances, if do not dealt carefully with, it is easy to cause secondary pollution.Therefore, Appropriate application Municipal sludge is extensively paid close attention to by people, and such as, the Chinese invention patent of Application No. 201210538349.1 discloses A kind of municipal sludge high additive makes the method for light high strength sintered brick；The Chinese invention of Application No. 200910184633.1 is special Profit discloses a kind of riverslakes sludge and municipal sludge fired brick and production method thereof.These fired bricks with municipal sludge are all Raw material, serves the purpose turning waste into wealth, economizing on resources to a certain extent, but is not carried out the abundant profit to existing waste material With, there is necessity of further Optimal improvements.The sintered perforated brick porosity prepared is relatively big, the therefore porosity, good thermal insulation separation Hot property is preferable, but numerous known, and the porosity of sintered perforated brick is the biggest, it is meant that the difficulty of brick body molding is the biggest, by force Spending the least, therefore, current porous baked brick still cannot be used widely.
Summary of the invention
It is an object of the invention to provide a kind of porous high-strength sintered brick, based on municipal sludge, nickel slag and riverway sludge Wanting raw material, it is achieved the effective utilization to industrial solid castoff, protect environment, production cost is low simultaneously；There is relatively macro porosity, Good thermal and insulating performance and bigger intensity, be easily used more widely.
Another object of the present invention is to provide the preparation technology of a kind of porous high-strength sintered brick, with municipal sludge, nickel slag Being raw material with riverway sludge, technique is simple, it is achieved the effective utilization to industrial solid castoff, protects environment, reduces life simultaneously Produce cost；The fired brick prepared has relatively macro porosity, good thermal and insulating performance and bigger intensity, is easily used more widely.
The present invention solves it and technical problem is that and realize by the following technical solutions.
The present invention proposes a kind of porous high-strength sintered brick, and it is made up of raw material by weight percentage, and raw material includes:
20%～70% is dried municipal sludge；15%～65% nickel slag；5%～15% is dried riverway sludge；1.5%～ 6.5% quick lime；And 0.5%～1.5% lanthana.
Further, in present pre-ferred embodiments, above-mentioned raw materials includes:
30%～60% is dried municipal sludge；25%～55% nickel slag；7%～13% is dried riverway sludge；2.5%～ 5.5% quick lime；And 0.7%～1.3% lanthana.
Further, in present pre-ferred embodiments, above-mentioned raw materials includes:
40%～50% is dried municipal sludge；35%～45% nickel slag；9%～11% is dried riverway sludge；3.5%～ 4.5% quick lime；And 0.9%～1.1% lanthana.
Further, in present pre-ferred embodiments, above-mentioned raw materials also includes nano magnesia, mixing of nano magnesia Amount is the 1%～3% of nickel slag weight.
Further, in present pre-ferred embodiments, above-mentioned raw materials also includes that dry dextrin, the volume of dry dextrin are nickel slag The 6%～8% of weight.
Further, in present pre-ferred embodiments, above-mentioned raw materials also includes calcium sulphoaluminate, and the volume of calcium sulphoaluminate is The 5%～8% of nickel slag weight.
A kind of preparation technology of porous high-strength sintered brick, comprising:
Prepare raw material by weight percentage: 20%～70% be dried municipal sludge, 15%～65% nickel slag, 5%～ 15% is dried riverway sludge, 1.5%～6.5% quick lime, 0.5%～1.5% lanthana；
Dry municipal sludge, riverway sludge and quick lime are mixed, grinding 15～35min, cross 100～140 mesh sieves, obtain the One compound；Broken, the grinding 0.8～1.2h by nickel slag, crosses 100～140 mesh sieves, adds lanthana mixing, obtains the second mixing Material；
By the first compound, the second compound mixing, add water stirring, is aged 3d～5d, in 5MPa～10MPa compression molding For base substrate, naturally dry in the shade；Base substrate after drying in the shade sinters at 950 DEG C～1150 DEG C, is incubated 4h～7h, then with 3～5 DEG C/min Rate of temperature fall be cooled to room temperature.
Further, in present pre-ferred embodiments, the preparation method of above-mentioned dry municipal sludge is:
From the mudpan of sewage treatment plant, take out mud, first use the first pressure filter to carry out filter pressing for the first time, then Use the second pressure filter to carry out second time filter pressing, obtain the semi-dry sludge that moisture content is 50%～55%；
Semi-dry sludge is sprayed plant extraction liquid deodorization, stacking, dehydrate at sunshine.
Further, in present pre-ferred embodiments, above-mentioned first pressure filter is plate and frame type filter-press, the second pressure filter For degree of depth filter-pressing dehydration equipment.
Further, in present pre-ferred embodiments, above-mentioned dry riverway sludge is to be taken off at riverway sludge stacking, sunshine Water is dried to obtain.
The porous high-strength sintered brick of the embodiment of the present invention and preparation technology thereof provide the benefit that:
The porous high-strength sintered brick of the embodiment of the present invention is by raw material by weight percentage: 20%～70% is dried city City's mud；15%～65% nickel slag；5%～15% is dried riverway sludge；1.5%～6.5% quick lime and 0.5%～ 1.5% lanthana, prepares through special mixing, sintering etc. science and engineering skill, and this preparation technology is with municipal sludge, nickel slag and river course Mud is primary raw material, it is achieved the effective utilization to industrial solid castoff, solves a process difficult problem for municipal sludge, nickel slag, Being conducive to protection environment and cultivated land resource, have good economic benefit and environmental benefit, added value of product is high；The porous prepared High-strength sintered brick has relatively macro porosity, good thermal and insulating performance and bigger intensity, it is possible to meet the requirement of reality application, easily It is used more widely.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below will be in the embodiment of the present invention Technical scheme be clearly and completely described.In embodiment, unreceipted actual conditions person, builds according to normal condition or manufacturer The condition of view is carried out.Agents useful for same or instrument unreceipted production firm person, being can be by the commercially available conventional product bought and obtain Product.
Porous high-strength sintered brick and preparation technology thereof to the embodiment of the present invention are specifically described below.
Embodiments providing a kind of porous high-strength sintered brick, it is made up of raw material by weight percentage, former Material includes: 20%～70% is dried municipal sludge；15%～65% nickel slag；5%～15% is dried riverway sludge；1.5%～ 6.5% quick lime；And 0.5%～1.5% lanthana.Preferably, raw material includes: 30%～60% is dried municipal sludge； 25%～55% nickel slag；7%～13% is dried riverway sludge；2.5%～5.5% quick lime；And 0.7%～1.3% oxidation Lanthanum.It is further preferred that raw material includes: 40%～50% is dried municipal sludge；35%～45% nickel slag；9%～11% is dried Riverway sludge；3.5%～4.5% quick lime；And 0.9%～1.1% lanthana.It is also preferred that the left raw material includes: 45% is dried city City's mud；40% nickel slag；10% is dried riverway sludge；4% quick lime；And 1% lanthana.
Wherein, municipal sludge is that sewage treatment plant processes solid sediment produced by waste water, in pitchy, mainly by stone The mineral such as English, dolomite and Organic substance etc. form, and wherein combustible organic content is about 50%, and the loss on ignition of municipal sludge is 52.7%.Dry municipal sludge is municipal sludge to carry out twice filter pressing obtain the semi-dry sludge that moisture content is 50%～55%, Then spray plant extraction liquid deodorization, stacking, sunshine are dehydrated and obtain.
Riverway sludge be administer dredging river time, dig out deposition river bed mud, dry riverway sludge be use stack, Sunshine the PROCESS FOR TREATMENT riverway sludge such as dehydrate and obtain.
Nickel slag be smelt formed in nickel process with SiO2、MgO、Fe2O3、Al2O3Solid slag for main component.This Embodiment selects larger amount of nickel slag to prepare fired brick as raw material, not only realizes the integrated treatment to nickel slag and utilizes, and meeting can Sustainable development requirement, and add nickel slag and can improve the intensity of fired brick.
Quick lime is mainly as the additive of fired brick, in order to improve the intensity of fired brick.
Lanthana is a kind of rare earth compound, can join in fired brick as stabilizer, sintering aid, it is possible to increase The intensity of fired brick, improves the toughness of fired brick, and reduces the sintering temperature of fired brick to reduce the purpose of production cost. The addition of lanthana can make the tendency of the nature of glass split-phase in fired brick and crystallize increase, be conducive to improve glass phase viscosity or Making glass phase in version is crystalline phase, to improve the mechanical behavior under high temperature of fired brick.
In the present embodiment, raw material can also include nano magnesia, the volume of nano magnesia be nickel slag weight 1%～ 3%.Nano level magnesium oxide has significantly smaller dimensional effect, skin effect and quantum size effect, is modified process, nothing Agglomeration, can be as making binding agent and additive in advanced ceramic materials, electronic industrial material, industrial chemicals.
In the present embodiment, raw material can also include 6%～8% that dry dextrin, the volume of dry dextrin are nickel slag weight.Dry paste Essence is the powder of a kind of yellow-white, and it does not dissolves in ethanol, and soluble in water, is dissolved in water and has the strongest viscosity.
In the present embodiment, the first raw material can also include calcium sulphoaluminate, and the addition of calcium sulphoaluminate is the 5% of nickel slag weight ～8%.Calcium sulphoaluminate is met water and is formed calcium sulfate, and its volumetric expansion can form hole.
The embodiment of the present invention also provides for the preparation technology of a kind of porous high-strength sintered brick, comprising:
S1 gets the raw materials ready: prepare raw material by weight percentage: 20%～70% be dried municipal sludge, 15%～65% nickel slag, 5%～15% is dried riverway sludge, 1.5%～6.5% quick lime, 0.5%～1.5% lanthana.
Wherein, dry municipal sludge is method to be prepared as follows prepare:
First, from the mudpan of sewage treatment plant, take out mud, first use the first pressure filter to carry out for the first time and press Filter, then use the second pressure filter to carry out second time filter pressing, obtain the semi-dry sludge that moisture content is 50%～55%.No matter what is taked Planting filter pressing mode, the moisture content of the mud after filter pressing is all more than 80% for the first time, carries out second time filter pressing the most again, just can make The moisture content of mud is 50%～55%.In the present embodiment, the first pressure filter is plate and frame type filter-press, and the second pressure filter is the degree of depth Filter-pressing dehydration equipment.
Secondly, semi-dry sludge is sprayed plant extraction liquid deodorization, stacking, dehydrate at sunshine.
And, dry riverway sludge is riverway sludge stacking, dehydrate at sunshine to be obtained.
S2 mixes: dry municipal sludge, riverway sludge and quick lime are mixed, grinding 15～35min, crosses 100～140 mesh Sieve, obtains the first compound；By broken for nickel slag, grinding 0.8～1.2h, cross 100～140 mesh sieves, add lanthana mixing, obtain the Two compounds.
S3 sinters: by the first compound, the second compound mixing, add water stirring, is aged 3d～5d, and compression molding is base Body, dries in the shade naturally, and the condition of compression molding is 5MPa～10MPa；Base substrate after drying in the shade sinters at 950 DEG C～1150 DEG C, Insulation 4h～7h, then it is cooled to room temperature with the rate of temperature fall of 3～5 DEG C/min.
Below in conjunction with embodiment, inventive feature and performance are described in further detail.
Embodiment 1
The present embodiment provides a kind of porous high-strength sintered brick, and it is made in accordance with the following methods:
Preparation is dried municipal sludge and dry riverway sludge: take out 100kg from the mudpan of sewage treatment plant dirty Mud, first uses plate and frame type filter-press to carry out filter pressing for the first time, then uses degree of depth filter-pressing dehydration equipment to carry out second time filter pressing, obtain Moisture content is the semi-dry sludge of 50%～55%；Spraying plant extraction liquid deodorization in semi-dry sludge, stacking, dehydration at sunshine are done Dry, obtain being dried municipal sludge；It addition, by the stacking of 100kg riverway sludge, dehydrate at sunshine, obtain being dried riverway sludge.
Prepare the dry municipal sludge of the above-mentioned preparation of 2kg, 6.5kg nickel slag, the dry riverway sludge of the above-mentioned preparation of 1kg, 0.4kg quick lime, 0.1kg lanthana.
2kg is dried municipal sludge, 1kg is dried riverway sludge and the mixing of 0.4kg quick lime, grinding 15min, crosses 140 mesh Sieve, obtains the first compound；By after broken for 6.5kg nickel slag, grinding 0.8h, cross 140 mesh sieves, add the mixing of 0.1kg lanthana, Second compound.
First compound and the second compound being mixed, add water stirring, is aged 3d；5MPa compression molding is base substrate, base substrate Dry in the shade under natural environment；Base substrate after drying in the shade sinters at 950 DEG C, is incubated 4h, then is cooled to 3 DEG C/min rate of temperature fall Room temperature, obtains the porous high-strength sintered brick of the present embodiment.
Embodiment 2
The present embodiment provides a kind of porous high-strength sintered brick, and it is made in accordance with the following methods:
Prepare the dry river course silt of the dry municipal sludge of 3kg embodiment 1 preparation, 5.5kg nickel slag, 1kg embodiment 1 preparation Mud, 0.4kg quick lime, 0.1kg lanthana.
3kg is dried municipal sludge, 1kg is dried riverway sludge and the mixing of 0.4kg quick lime, grinding 35min, crosses 100 mesh Sieve, obtains the first compound；By after broken for 5.5kg nickel slag, grinding 1.2h, cross 100 mesh sieves, add the mixing of 0.1kg lanthana, Second compound.
First compound and the second compound being mixed, add water stirring, is aged 5d；10MPa compression molding is base substrate, base substrate Dry in the shade under natural environment；Base substrate after drying in the shade sinters at 1150 DEG C, is incubated 7h, is cooled to 5 DEG C/min rate of temperature fall Room temperature, obtains the porous high-strength sintered brick of the present embodiment.
Embodiment 3
The present embodiment provides a kind of porous high-strength sintered brick, and it is made in accordance with the following methods:
Prepare the dry river course silt of the dry municipal sludge of 4kg embodiment 1 preparation, 4.5kg nickel slag, 1kg embodiment 1 preparation Mud, 0.5kg quick lime, 0.1kg lanthana.By dry municipal sludge, it is dried riverway sludge and quick lime mixing, grinding 15min, Cross 120 mesh sieves, obtain the first compound；By after broken for nickel slag, grinding 0.8h, cross 120 mesh sieves, add lanthana mixing, obtain the Two compounds.
First compound and the second compound being mixed, add water stirring, is aged 3d；5MPa compression molding is base substrate, base substrate Dry in the shade under natural environment；Base substrate after drying in the shade sinters at a temperature of 1050 DEG C, is incubated 4h, with 4 DEG C/min rate of temperature fall It is cooled to room temperature, obtains the porous high-strength sintered brick of the present embodiment.
Embodiment 4
The present embodiment provides a kind of porous high-strength sintered brick, and it is made in accordance with the following methods:
Prepare the dry river course silt of the dry municipal sludge of 5kg embodiment 1 preparation, 3.5kg nickel slag, 1kg embodiment 1 preparation Mud, 0.4kg quick lime, 0.1g lanthana.By dry municipal sludge, it is dried riverway sludge and quick lime mixing, grinding 35min, Cross 120 mesh sieves, obtain the first compound；By after broken for nickel slag, grinding 1.2h, cross 120 mesh sieves, add lanthana mixing, obtain the Two compounds.
First compound and the second compound being mixed, add water stirring, is aged 5d；10MPa compression molding is base substrate, base substrate Dry in the shade under natural environment；Base substrate after drying in the shade sinters at 1050 DEG C, is incubated 7h, is cooled to 4 DEG C/min rate of temperature fall Room temperature, obtains the porous high-strength sintered brick of the present embodiment.
Embodiment 5
The present embodiment provides a kind of porous high-strength sintered brick, and it is made in accordance with the following methods:
Prepare the dry river course silt of the dry municipal sludge of 6kg embodiment 1 preparation, 2.5kg nickel slag, 1kg embodiment 1 preparation Mud, 0.4kg quick lime, 0.1kg lanthana.
By dry municipal sludge, it is dried riverway sludge and quick lime mixing, grinding 25min, crosses 120 mesh sieves, obtain first and mix Close material；By after broken for nickel slag, grinding 1h, cross 120 mesh sieves, add lanthana mixing, obtain the second compound.
First compound and the second compound being mixed, add water stirring, is aged 4d；8MPa compression molding is base substrate, base substrate Dry in the shade under natural environment；Base substrate after drying in the shade sinters at 1050 DEG C, is incubated 5.5h, colder with 4 DEG C/min rate of temperature fall But to room temperature, the porous high-strength sintered brick of the present embodiment is obtained.
Embodiment 6
The present embodiment provides a kind of porous high-strength sintered brick, and it is made in accordance with the following methods:
Prepare the dry river course silt of the dry municipal sludge of 7kg embodiment 1 preparation, 1.5kg nickel slag, 1kg embodiment 1 preparation Mud, 0.4kg quick lime, 0.1kg lanthana.
By dry municipal sludge, it is dried riverway sludge and quick lime mixing, grinding 25min, crosses 120 mesh sieves, obtain first and mix Close material；By after broken for nickel slag, grinding 1h, cross 120 mesh sieves, add lanthana mixing, obtain the second compound.
First compound and the second compound being mixed, add water stirring, is aged 4d；8MPa compression molding is base substrate, base substrate Dry in the shade under natural environment；Base substrate after drying in the shade sinters at 1050 DEG C, is incubated 5.5h, colder with 4 DEG C/min rate of temperature fall But to room temperature, the porous high-strength sintered brick of the present embodiment is obtained.
Embodiment 7
The present embodiment provides a kind of porous high-strength sintered brick, and it is made in accordance with the following methods:
Prepare the dry municipal sludge of 4.5kg embodiment 1 preparation, the dry river course of nickel slag 4kg, 1kg embodiment 1 preparation becomes silted up Mud, 0.4kg quick lime, 0.1g lanthana.
By dry municipal sludge, it is dried riverway sludge and quick lime mixing, grinding 25min, crosses 120 mesh sieves, obtain first and mix Close material；By after broken for nickel slag, grinding 1h, cross 120 mesh sieves, add lanthana mixing, obtain the second compound.
First compound and the second compound being mixed, add water stirring, is aged 4d；8MPa compression molding is base substrate, base substrate Dry in the shade under natural environment；Base substrate after drying in the shade sinters at 1050 DEG C, is incubated 5h, then cools down with 4 DEG C/min rate of temperature fall To room temperature, obtain the porous high-strength sintered brick of the present embodiment.
Embodiment 8
The present embodiment provides a kind of porous high-strength sintered brick, and it is made in accordance with the following methods:
Prepare the dry river course silt of the dry municipal sludge of 5kg embodiment 1 preparation, 3.5kg nickel slag, 1kg embodiment 1 preparation Mud, 0.4kg quick lime, 0.1kg lanthana, 35g nano magnesia.
By dry municipal sludge, it is dried riverway sludge and quick lime mixing, grinding 25min, crosses 120 mesh sieves, obtain first and mix Close material；By after broken for nickel slag, grinding 1h, cross 120 mesh sieves, add lanthana and nano magnesia mixing, obtain the second compound.
First compound and the mixing of the second compound, add water stirring, is aged 4d；10MPa compression molding is base substrate, and base substrate exists Dry in the shade under natural environment；Base substrate after drying in the shade sinters at 1050 DEG C, is incubated 7h, then is cooled to 4 DEG C/min rate of temperature fall Room temperature, obtains the porous high-strength sintered brick of the present embodiment.
Embodiment 9
The present embodiment provides a kind of porous high-strength sintered brick, and it is made in accordance with the following methods:
Prepare the dry river course silt of the dry municipal sludge of 5kg embodiment 1 preparation, 3.5kg nickel slag, 1kg embodiment 1 preparation Mud, 0.4kg quick lime, 0.1kg lanthana, the dry dextrin of 245g.
By dry municipal sludge, it is dried riverway sludge and quick lime mixing, grinding 25min, crosses 120 mesh sieves, obtain first and mix Close material；By after broken for nickel slag, grinding 1h, cross 120 mesh sieves, add lanthana and the mixing of dry dextrin, obtain the second compound.
First compound and the mixing of the second compound, add water stirring, is aged 4d；10MPa compression molding is base substrate, and base substrate exists Dry in the shade under natural environment；Base substrate after drying in the shade sinters at 1050 DEG C, is incubated 7h, then is cooled to 4 DEG C/min rate of temperature fall Room temperature, obtains the porous high-strength sintered brick of the present embodiment.
Embodiment 10
The present embodiment provides a kind of porous high-strength sintered brick, and it is made in accordance with the following methods:
Prepare the dry river course silt of the dry municipal sludge of 5kg embodiment 1 preparation, 3.5kg nickel slag, 1kg embodiment 1 preparation Mud, 0.4kg quick lime, 0.1kg lanthana, 245g calcium sulphoaluminate.
By dry municipal sludge, it is dried riverway sludge and quick lime mixing, grinding 25min, crosses 120 mesh sieves, obtain first and mix Close material；By after broken for nickel slag, grinding 1h, cross 120 mesh sieves, add lanthana and calcium sulphoaluminate mixing, obtain the second compound.
First compound and the mixing of the second compound, add water stirring, is aged 4d；10MPa compression molding is base substrate, and base substrate exists Dry in the shade under natural environment；Base substrate after drying in the shade sinters at 1050 DEG C, is incubated 7h, then is cooled to 4 DEG C/min rate of temperature fall Room temperature, obtains the porous high-strength sintered brick of the present embodiment.
Properties of product detect: the density of porous high-strength sintered brick in testing example 1～10, water absorption rate, aobvious gas respectively Porosity and bending strength, result is as shown in the table:
The performance indications of table 1 porous high-strength sintered brick
Mensuration project Density (g/cm3) Water absorption rate (%) The porosity (%) Bending strength (MPa)
Embodiment 1 2.3506 17 34.16 6.67
Embodiment 2 2.2852 19.42 37.16 18.37
Embodiment 3 2.2198 22.01 40.05 7.86
Embodiment 4 2.1668 23.7 41.5 10.34
Embodiment 5 2.1406 24.37 41.94 6.67
Embodiment 6 2.1255 24.89 42.03 8.78
Embodiment 7 2.2178 23.33 40.13 9.56
Embodiment 8 2.2019 21.78 39.15 17.73
Embodiment 9 2.1568 21.12 38.54 18.54
Embodiment 10 2.3012 21.87 39.45 18.15
Can be obtained by table 1 result, the porous high-strength sintered brick light weight that the embodiment of the present invention prepares, there is less water absorption rate, Relatively macro porosity and bigger bending strength.
In sum, the preparation technology of the porous high-strength sintered brick of the embodiment of the present invention is with municipal sludge, nickel slag and river course Mud is primary raw material, it is achieved the effective utilization to industrial solid castoff, protects environment, and production cost is low simultaneously；Prepare Porous high-strength sintered brick has relatively macro porosity, good thermal and insulating performance and bigger intensity, is easily used more widely.
Embodiments described above is a part of embodiment of the present invention rather than whole embodiments.The reality of the present invention The detailed description executing example is not intended to limit the scope of claimed invention, but is merely representative of the selected enforcement of the present invention Example.Based on the embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise Every other embodiment, broadly falls into the scope of protection of the invention.

Claims (10)

1. a porous high-strength sintered brick, it is characterised in that it is made up of raw material by weight percentage, described raw material bag Include:
Porous high-strength sintered brick the most according to claim 1, it is characterised in that described raw material includes:
Porous high-strength sintered brick the most according to claim 1, it is characterised in that described raw material includes:
Porous high-strength sintered brick the most according to claim 1, it is characterised in that described raw material also includes nano magnesia, The volume of described nano magnesia is the 1%～3% of described nickel slag weight.
Porous high-strength sintered brick the most according to claim 1, it is characterised in that in the present embodiment, described raw material also includes Dry dextrin, the volume of described dry dextrin is the 6%～8% of described nickel slag weight.
Porous high-strength sintered brick the most according to claim 1, it is characterised in that in the present embodiment, described raw material also includes Calcium sulphoaluminate, the volume of described calcium sulphoaluminate is the 5%～8% of described nickel slag weight.
7. the preparation technology manufacturing porous high-strength sintered brick as claimed in claim 1, it is characterised in that comprising:
Prepare raw material by weight percentage: 20%～70% to be dried municipal sludge, 15%～65% nickel slag, 5%～15% dry Dry riverway sludge, 1.5%～6.5% quick lime, 0.5%～1.5% lanthana；
Described dry municipal sludge, described riverway sludge and described quick lime are mixed, grinding 15～35min, cross 100～140 Mesh sieve, obtains the first compound；Broken, the grinding 0.8～1.2h by described nickel slag, crosses 100～140 mesh sieves, adds described oxidation Lanthanum mixes, and obtains the second compound；
By described first compound, described second compound mixing, add water stirring, is aged 3d～5d, molds in 5MPa～10MPa It is shaped to base substrate, naturally dries in the shade；Described base substrate after drying in the shade sinters at 950 DEG C～1150 DEG C, is incubated 4h～7h, then with 3 ～the rate of temperature fall of 5 DEG C/min is cooled to room temperature.
The preparation technology of porous high-strength sintered brick the most according to claim 7, it is characterised in that described dry municipal sludge Preparation method be:
From the mudpan of sewage treatment plant, take out mud, first use the first pressure filter to carry out filter pressing for the first time, then use Second pressure filter carries out second time filter pressing, obtains the semi-dry sludge that moisture content is 50%～55%；
Described semi-dry sludge is sprayed plant extraction liquid deodorization, stacking, dehydrate at sunshine.
The preparation technology of porous high-strength sintered brick the most according to claim 8, it is characterised in that described first pressure filter is Plate and frame type filter-press, described second pressure filter is degree of depth filter-pressing dehydration equipment.
The preparation technology of porous high-strength sintered brick the most according to claim 7, it is characterised in that described dry river course becomes silted up Mud is riverway sludge stacking, dehydrate at sunshine to be obtained.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106810281A (en) * 2017-02-24 2017-06-09 中南大学 A kind of preparation method of the forsterite refractory brick that utilization ferronickel slag is prepared
CN112715316A (en) * 2020-12-25 2021-04-30 中煤浙江生态环境发展有限公司 Re-greening restoration backfill planting material and application thereof

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JPH06293556A (en) * 1993-02-09 1994-10-21 Mitsubishi Materials Corp Base resistant refractory
CN104193368A (en) * 2014-08-28 2014-12-10 洛阳利尔耐火材料有限公司 Magnesium-spinel brick for RH (Rheinstahl-Hutlenwerke) refining furnaces and preparation method thereof

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Publication number Priority date Publication date Assignee Title
JPH06293556A (en) * 1993-02-09 1994-10-21 Mitsubishi Materials Corp Base resistant refractory
CN104193368A (en) * 2014-08-28 2014-12-10 洛阳利尔耐火材料有限公司 Magnesium-spinel brick for RH (Rheinstahl-Hutlenwerke) refining furnaces and preparation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106810281A (en) * 2017-02-24 2017-06-09 中南大学 A kind of preparation method of the forsterite refractory brick that utilization ferronickel slag is prepared
CN106810281B (en) * 2017-02-24 2020-01-03 中南大学 Method for preparing forsterite refractory brick from nickel-iron slag
CN112715316A (en) * 2020-12-25 2021-04-30 中煤浙江生态环境发展有限公司 Re-greening restoration backfill planting material and application thereof
CN112715316B (en) * 2020-12-25 2024-02-20 中煤浙江生态环境发展有限公司 Restoring and backfilling planting material and application thereof

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