CN106431165A - Red mud foam building block and preparation method thereof - Google Patents
Red mud foam building block and preparation method thereof Download PDFInfo
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- CN106431165A CN106431165A CN201610890676.1A CN201610890676A CN106431165A CN 106431165 A CN106431165 A CN 106431165A CN 201610890676 A CN201610890676 A CN 201610890676A CN 106431165 A CN106431165 A CN 106431165A
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/0409—Waste from the purification of bauxite, e.g. red mud
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1051—Organo-metallic compounds; Organo-silicon compounds, e.g. bentone
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides a red mud foam building block and a preparation method thereof. The red mud foam building block is prepared from, by weight, 180-250 parts of modified red mud, 180-250 parts of desulfurized gypsum, 10-30 parts of quick lime, 15-40 parts of silica fume, 20-30 parts of coal ash, 20-40 parts of slag, 10-25 parts of thickening time control agent, 5-7 parts of alkali-resistant fibers and 20-25 parts of hydrogen peroxide. The thickening time control agent is prepared from, by weight, 90-100 parts of red mud, 10-30 parts of sodium silicate, 9.5-10 parts of anhydrous sodium carbonate, 15-30 parts of silica fume, 2-8 parts of calcium lignosulphonate powder, 6-8 parts of calcium stearate and 3-10 parts of calcium chloride. By the adoption of the technical scheme, the compressive strength and breaking strength of the foam building brick are improved while the problems of powder removal, scaling off and saltpetering of a red mud foam building block are solved, and the foam building block can be firmly bounded with alkali-resistant glass.
Description
Technical field
The invention belongs to building material technical field, more particularly, to a kind of Red Mud Foam building block and preparation method thereof.
Background technology
Reduce discharging the continuous propulsion to depth for the policy with national energy-saving, the emerging strategic industries such as development energy-conserving and environment-protective are to no
The demand of machine insulation material will increase considerably.Air entrained concrete is with the raw materials such as light material, siliceous material and foaming agent, warp
The light concrete plate that certain production technology chemical foam, pressure are steamed, has heat-insulating property concurrently as building enclosure, is used for
Southern area, is typically used as inner separation wall body material or wall self-thermal insulation material.
Red mud is that aluminium industry extracts the contaminative waste residue discharged in alumina process, and average often produces 1 ton of oxidation
Aluminium, incidentally produces 1.0～2.0 tons of red muds.China is up to as big alumina producing state of the world the 4th, the red mud of annual discharge
Ten million ton, substantial amounts of red mud can not abundant effectively utilizes, stack by large-area storage yard, not only wasting manpower and material resources, and pollute ring
Border.
At present, someone's research prepares air entrained concrete using discarded red mud, but air entrained concrete generally requires steam pressure
Maintenance, equipment cost is high, and energy consumption is big, and production process security risk is high.And the Red Mud Foam concrete without steam press maintenance, deposit
The problem of and low strength scaling-off in the accumulation of salt in the surface soil, shedding.
Content of the invention
For above technical problem, the invention discloses a kind of Red Mud Foam building block and preparation method thereof, solving red mud
Foamed building block shedding is scaling-off, the problem of the accumulation of salt in the surface soil while, improve compression strength and the rupture strength of foamed building block, and can with resistance to
Alkali glass strong bonded.
In this regard, the technical scheme is that：、
A kind of Red Mud Foam building block, its component comprising and parts by weight are：180～250 parts of changed red mud, desulfurization stone
180～250 parts of cream, 10～30 parts of quick lime, 15～40 parts of silicon ash, 20～30 parts of flyash, 20～40 parts of slag, adjustable solidification agent 10
～25 parts, 5～7 parts of alkali proof fiber, 20～25 parts of hydrogen peroxide；
Wherein, the component that described adjustable solidification agent comprises and parts by weight are：90～100 parts of red mud, 10～30 parts of sodium metasilicate,
9.5～10 parts of natrium carbonicum calcinatum, 15～30 parts of silicon ash, 2～8 parts of lignin sulfonic acid calcium powder, 6～8 parts of calcium stearate, calcium chloride 3
～10 parts；Described changed red mud is the red mud being processed using surface conditioning agent.
As a further improvement on the present invention, the component that described adjustable solidification agent comprises and parts by weight are：Red mud 90～100
Part, 12～25 parts of sodium metasilicate, 9.5～10 parts of natrium carbonicum calcinatum, 18～28 parts of silicon ash, 2～6 parts of lignin sulfonic acid calcium powder, stearic
6～8 parts of sour calcium, 3～6 parts of calcium chloride.
As a further improvement on the present invention, described adjustable solidification agent is prepared using following steps：To add no in red mud
Calcine 0.5～2h at 600～800 DEG C after aqueous sodium carbonate, silicon ash, after being cooled to room temperature, add lignin sulfonic acid calcium powder, tristearin
Sour calcium, sodium metasilicate, calcium chloride obtain adjustable solidification agent after mixing.
As a further improvement on the present invention, described changed red mud is prepared using following steps：By red mud 600～
Calcine 0.5～2h at 800 DEG C, add surface conditioning agent to stir after cooling, be then incubated at a temperature of 90～130 DEG C again
0.5～2h, obtains changed red mud.
As a further improvement on the present invention, described surface conditioning agent is silane coupler, in described changed red mud, red mud
With the weight of surface conditioning agent than for 100：(1～3).
As a further improvement on the present invention, described surface conditioning agent is silane coupler.Preferably, described surface treatment
Agent is γ-methacryloxypropyl trimethoxy silane, gamma-aminopropyl-triethoxy-silane or γ-(2,3 epoxy the third oxygen)
At least one in propyl trimethoxy silicane.
As a further improvement on the present invention, the modulus of described sodium metasilicate is 2.2～2.8.
As a further improvement on the present invention, described alkali proof fiber be in polypropylene fibre or vinal at least
A kind of.
As a further improvement on the present invention, described Red Mud Foam building block is prepared using following steps：In modification
Desulfurated plaster is added, then add water stirring 10～20min, adds quick lime, silicon ash, flyash, slag, adjustable solidification agent in red mud
And alkali proof fiber, and the stirring 3～8min that adds water, it is eventually adding hydrogen peroxide stirring 30s～120s, obtain slip；By be stirred
Slip, is poured into mould and is foamed, to be foamed completely afterwards band mould be incubated 1～2h at 25～40 DEG C；The 24h demoulding, natural curing
28d, obtains Red Mud Foam building block.
As a further improvement on the present invention, the mass concentration of described hydrogen peroxide is 30%.
Present invention also offers a kind of preparation method of Red Mud Foam building block as above, it comprises the following steps：
Step S1：Red mud is dried, sieves after ball milling, obtain red mud powder；
Step S2：Natrium carbonicum calcinatum, silicon ash is added to calcine 0.5～2h at 600～800 DEG C in red mud powder, cooling
Lignin sulfonic acid calcium powder, calcium stearate, sodium metasilicate, calcium chloride is added to obtain adjustable solidification agent after mixing afterwards；
Step S3：Red mud powder is calcined 0.5～2h at 600～800 DEG C, adds surface conditioning agent stirring after cooling all
Even, then it is incubated 0.5～2h at a temperature of 90～130 DEG C again, obtain changed red mud；
Step S4：Add desulfurated plaster in changed red mud, then add water stirring 10～20min, adds quick lime, silicon
Ash, flyash, slag, adjustable solidification agent and alkali proof fiber, and the stirring 3～8min that adds water, be eventually adding hydrogen peroxide stirring 30s～
120s, obtains slip；
Step S5：By the slip being stirred, be poured into mould and foamed, to be foamed completely afterwards band mould protect at 25～40 DEG C
Warm 1～2h；The 24h demoulding, natural curing 28d, obtain Red Mud Foam building block.
Wherein, the mass concentration of described hydrogen peroxide is 30%.
Compared with prior art, beneficial effects of the present invention are：
First, using technical scheme, solving the problems, such as that Red Mud Foam building block shedding is scaling-off, the accumulation of salt in the surface soil same
When, improve compression strength and the rupture strength of foamed building block, modified red mud can be with alkali-proof glass strong bonded.The present invention's
Uniformly, unit weight can be controlled in 500-600kg/m3 to the closing of building block pore, and foamed building block compression strength, up to 3.8～5.1MPa, resists
Folding intensity is up to 1.0～2.0MPa.
Second, the building block of the present invention, it is not necessary to autoclave at high temperature maintenance or high-temperature calcination, can be greatly reduced energy resource consumption.
3rd, using technical scheme, red mud can be consumed in a large number, alleviate the environmental pressure of Zhi Lv enterprise, for section
Can reduce discharging and be made that contribution.
Specific embodiment
Below the preferably embodiment of the present invention is described in further detail.
Embodiment 1
A kind of Red Mud Foam building block, is prepared from using following steps：
Step S1：Red mud is dried to constant weight, with crossing 200 mesh sieves after ball mill ball milling, obtains red mud powder；
Step S2：Add natrium carbonicum calcinatum, silicon ash to calcine 1h at 800 DEG C in red mud powder, add wooden after cooling
Plain sulfonic acid calcium powder, calcium stearate, sodium metasilicate, calcium chloride obtain adjustable solidification agent after mixing；Wherein, described adjustable solidification agent comprises component and
Its parts by weight is：90 parts of red mud, 10 parts of sodium metasilicate, 9.5 parts of natrium carbonicum calcinatum, 15 parts of silicon ash, 2 parts of lignin sulfonic acid calcium powder,
6 parts of calcium stearate, 3 parts of calcium chloride.
Step S3：Red mud powder is calcined 2h at 600 DEG C, adds surface conditioning agent to stir after cooling, Ran Hou
It is incubated 2h at a temperature of 90 DEG C, obtain changed red mud.Described surface conditioning agent is γ-methacryloxypropyl trimethoxy
Silane coupler.The weight of red mud and surface conditioning agent is than for 100：2.
Step S4：In changed red mud add desulfurated plaster, then add water stirring 15min, add quick lime, silicon ash,
Flyash, slag, adjustable solidification agent and alkali proof fiber, and the stirring 5min that adds water, are eventually adding hydrogen peroxide stirring 30s～120s, obtain
Slip；The consumption of above-mentioned material is calculated as with parts by weight：180 parts of changed red mud, 180 parts of desulfurated plaster, 12 parts of quick lime, silicon ash
35 parts, 30 parts of flyash, 25 parts of slag, 10 parts of adjustable solidification agent, 5 parts of polypropylene fibre, 20 parts of hydrogen peroxide, as shown in Table 1 below.
Step S5：By the slip being stirred, be poured into mould and foamed, to be foamed completely afterwards band mould be incubated at 40 DEG C
1h；The 24h demoulding, natural curing 28d, obtain Red Mud Foam building block.
Embodiment 2
A kind of Red Mud Foam building block, is prepared from using following steps：
Step S1：Red mud is dried to constant weight, with crossing 300 mesh sieves after ball mill ball milling, obtains red mud powder；
Step S2：Red mud powder is calcined 1h at 700 DEG C, adds surface conditioning agent to stir after cooling, Ran Hou
It is incubated 1h at a temperature of 120 DEG C, obtain changed red mud.Described surface conditioning agent is γ-methacryloxypropyl trimethoxy
Base silane coupling agent.
Step S3：In changed red mud add desulfurated plaster, then add water stirring 15min, add quick lime, silicon ash,
Flyash, slag and alkali proof fiber, and the stirring 5min that adds water, are eventually adding hydrogen peroxide stirring 30s～120s, obtain slip；On
The consumption stating material is calculated as with parts by weight：180 parts of changed red mud, 180 parts of desulfurated plaster, 12 parts of quick lime, 35 parts of silicon ash, powder
30 parts of coal ash, 25 parts of slag, 5 parts of polypropylene fibre, 20 parts of hydrogen peroxide, as shown in Table 1 below.
Step S4：By the slip being stirred, be poured into mould and foamed, to be foamed completely afterwards band mould be incubated at 40 DEG C
1h；The 24h demoulding, natural curing 28d, obtain Red Mud Foam building block.
Embodiment 3
A kind of Red Mud Foam building block, is prepared from using following steps：
Step S1：Red mud is dried to constant weight, with crossing 200 mesh sieves after ball mill ball milling, obtains red mud powder；
Step S2：Add natrium carbonicum calcinatum, silicon ash to calcine 1h at 700 DEG C in red mud powder, add wooden after cooling
Plain sulfonic acid calcium powder, calcium stearate, sodium metasilicate, calcium chloride obtain adjustable solidification agent after mixing；Wherein, described adjustable solidification agent comprises component and
Its parts by weight is：100 parts of red mud, 30 parts of sodium metasilicate, 10 parts of natrium carbonicum calcinatum, 30 parts of silicon ash, 6 parts of lignin sulfonic acid calcium powder,
8 parts of calcium stearate, 6 parts of calcium chloride.
Step S3：Red mud powder is calcined 1h at 800 DEG C, after cooling, adds surface conditioning agent γ-aminopropyl three ethoxy
Base silane stirs, and is then incubated 0.5～2h at a temperature of 90～130 DEG C, obtains changed red mud.Red mud and surface treatment
The weight of agent is than for 100：1.Step S4：Add desulfurated plaster in changed red mud, then add water stirring 15min, adds life
Lime, silicon ash, flyash, slag, adjustable solidification agent and alkali proof fiber, and add water stirring 5min, be eventually adding hydrogen peroxide stirring 30s～
120s, obtains slip；The consumption of above-mentioned material is as shown in Table 1 below in terms of parts by weight.
Step S5：By the slip being stirred, be poured into mould and foamed, to be foamed completely afterwards band mould be incubated at 40 DEG C
1h；The 24h demoulding, natural curing 28d, obtain Red Mud Foam building block.
Embodiment 4
A kind of Red Mud Foam building block, is prepared from using following steps：
Step S1：Red mud is dried to constant weight, with crossing 200 mesh sieves after ball mill ball milling, obtains red mud powder；
Step S2：Add natrium carbonicum calcinatum, silicon ash to calcine 1h at 800 DEG C in red mud powder, add wooden after cooling
Plain sulfonic acid calcium powder, calcium stearate, sodium metasilicate, calcium chloride obtain adjustable solidification agent after mixing；Wherein, described adjustable solidification agent comprises component and
Its parts by weight is：95 parts of red mud, 20 parts of sodium metasilicate, 9.8 parts of natrium carbonicum calcinatum, 20 parts of silicon ash, 3 parts of lignin sulfonic acid calcium powder,
7 parts of calcium stearate, 4 parts of calcium chloride.
Step S3：Red mud powder is calcined 1h at 800 DEG C, after cooling, adds surface conditioning agent γ-(2,3 epoxy the third oxygen)
Propyl trimethoxy silicane stirs, and is then incubated 0.5～2h at a temperature of 90～130 DEG C, obtains changed red mud.Red mud
With the weight of surface conditioning agent than for 100：3.
Step S4：In changed red mud add desulfurated plaster, then add water stirring 15min, add quick lime, silicon ash,
Flyash, slag, adjustable solidification agent and alkali proof fiber, and the stirring 5min that adds water, are eventually adding hydrogen peroxide stirring 30s～120s, obtain
Slip；The consumption of above-mentioned material is as shown in Table 1 below in terms of parts by weight.
Step S5：By the slip being stirred, be poured into mould and foamed, to be foamed completely afterwards band mould be incubated at 40 DEG C
1h；The 24h demoulding, natural curing 28d, obtain Red Mud Foam building block.
Embodiment 5
On the basis of embodiment 2, material mixture ratio refers to table 1.
Embodiment 6
On the basis of embodiment 1, material mixture ratio refers to table 1.
Embodiment 7
On the basis of embodiment 3, material mixture ratio refers to table 1.
Embodiment 8
On the basis of embodiment 2, material mixture ratio refers to table 1.
Embodiment 9
On the basis of embodiment 1, material mixture ratio refers to table 1.
The raw material proportioning table of table 1 Red Mud Foam block embodiments 1～9
Comparative example 1
With the cement base building block embodiment as a comparison of prior art, the material used by this example and its parts by weight are：General
150 parts of logical portland cement, 120 parts of desulfurated plaster, 30 parts of slag, 25 parts of flyash, 25 parts of silicon ash, 20 parts of quick lime, stearic
1 part of sour calcium, 5 parts of alkali proof fiber.Using following steps preparation：
(1) by above-mentioned powder mix and blend, it is subsequently adding suitable quantity of water and 1 part of mix and blend of polycarboxylate water-reducer, is mixed
Close slurry；
(2) 1 part of calcium chloride, 0.8 part of natrium carbonicum calcinatum are added in above-mentioned mixed slurry, mixing continues stirring 5min,
Add 25 parts of stirring 30～60s of hydrogen peroxide afterwards；
(3) by the slip being stirred, be poured into the die trial coating plastics, to be foamed completely afterwards band mould be incubated at 40 DEG C
1h；The 24h demoulding, natural curing 28d.
Comparative example 2
A kind of Red Mud Foam building block is prepared as base-material using unmodified red mud, is prepared from using following steps：
Step S1：Red mud is dried to constant weight, with crossing 300 mesh sieves after ball mill ball milling, obtains red mud powder；
Step S2：Add desulfurated plaster in red mud, then add water stirring 15min, adds quick lime, silicon ash, fine coal
Ash, slag, adjustable solidification agent and alkali proof fiber, and the stirring 5min that adds water, are eventually adding hydrogen peroxide stirring 30s～120s, obtain slip；
The consumption of above-mentioned material is calculated as with parts by weight：200 parts of red mud, 170 parts of desulfurated plaster, 10 parts of quick lime, 30 parts of silicon ash, fine coal
30 parts of ash, 25 parts of slag, 5 parts of polypropylene fibre, 25 parts of hydrogen peroxide.
Step S3：By the slip being stirred, be poured into mould and foamed, to be foamed completely afterwards band mould be incubated at 40 DEG C
1h；The 24h demoulding, natural curing 28d, obtain Red Mud Foam building block.
Building block to embodiment 1～9 and comparative example 1～2 is observed and performance test, and the performance test results refer to table
Shown in 2.Uniformly, unit weight can be controlled in 500-600kg/m for the building block pore closing of embodiment 1～93, can be with alkali-proof glass jail
Consolidation is closed.Using technical scheme, foamed building block compression strength up to 3.8～5.1MPa, rupture strength up to 1.0～
2.0MPa.Data Comparison by table 2 is visible, for comparative example 1 and comparative example 2, in the technical side using the present invention
Case, the Red Mud Foam building block of the present invention, compression strength is improved, and thermal conductivity factor is less than 0.10W/ (m K), water suction
Rate≤8%, and be not in accumulation of salt in the surface soil situation, shedding slag-off phenomenon is few.And red mud can be consumed in a large number, alleviate Zhi Lv enterprise
Environmental pressure, it is not necessary to autoclave at high temperature maintenance or high-temperature calcination, can be greatly reduced energy resource consumption.
Foamed building block partial properties index test result prepared by table 2 different component raw material
Above content is to further describe it is impossible to assert with reference to specific preferred embodiment is made for the present invention
Being embodied as of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of present inventive concept, some simple deduction or replace can also be made, all should be considered as belonging to the present invention's
Protection domain.
Claims (10)
1. a kind of Red Mud Foam building block it is characterised in that：Its component comprising and parts by weight are：Changed red mud 180～250
Part, 180～250 parts of desulfurated plaster, 10～30 parts of quick lime, 15～40 parts of silicon ash, 20～30 parts of flyash, slag 20～40
Part, 10～25 parts of adjustable solidification agent, 5～7 parts of alkali proof fiber, 20～25 parts of hydrogen peroxide；
Wherein, the component that described adjustable solidification agent comprises and parts by weight are：90～100 parts of red mud, 10 ~ 30 parts of sodium metasilicate, anhydrous
9.5～10 parts of sodium carbonate, 15～30 parts of silicon ash, 2～8 parts of lignin sulfonic acid calcium powder, 6～8 parts of calcium stearate, calcium chloride 3 ~ 10
Part；Described changed red mud is the red mud being processed using surface conditioning agent.
2. Red Mud Foam building block according to claim 1 it is characterised in that：Component and weight that described adjustable solidification agent comprises
Number is：90～100 parts of red mud, 12 ~ 25 parts of sodium metasilicate, 9.5～10 parts of natrium carbonicum calcinatum, 18～28 parts of silicon ash, sulfomethylated lignin
2～6 parts of sour calcium powder, 6～8 parts of calcium stearate, 3 ~ 6 parts of calcium chloride.
3. Red Mud Foam building block according to claim 1 it is characterised in that：Described adjustable solidification agent is prepared into using following steps
Arrive：Calcine 0.5 ~ 2 h by adding in red mud at 600～800 DEG C after natrium carbonicum calcinatum, silicon ash, after being cooled to room temperature, add wood
Quality sulfonic acid calcium powder, calcium stearate, sodium metasilicate, calcium chloride obtain adjustable solidification agent after mixing.
4. Red Mud Foam building block according to claim 1 it is characterised in that：Described changed red mud adopts following steps to prepare
Obtain：Red mud is calcined 0.5 ~ 2 h at 600～800 DEG C, after cooling, adds surface conditioning agent to stir, then again 90～
It is incubated 0.5 ~ 2 h at a temperature of 130 DEG C, obtain changed red mud.
5. Red Mud Foam building block according to claim 4 it is characterised in that：Described surface conditioning agent is silane coupler,
In described changed red mud, the weight of red mud and surface conditioning agent is than for 100：（1~3）.
6. Red Mud Foam building block according to claim 5 it is characterised in that：Described surface conditioning agent is γ-metering system
Acryloxypropylethoxysilane trimethoxy silane, gamma-aminopropyl-triethoxy-silane or γ-(2,3 epoxy the third oxygen) propyl trimethoxy silicon
At least one in alkane.
7. Red Mud Foam building block according to claim 1 it is characterised in that：The modulus of described sodium metasilicate is 2.2 ~ 2.8.
8. Red Mud Foam building block according to claim 1 it is characterised in that：Described alkali proof fiber is polypropylene fibre or poly-
At least one in alcohol fibers.
9. the Red Mud Foam building block according to claim 1 ~ 8 any one it is characterised in that：It is prepared into using following steps
Arrive：Add desulfurated plaster in changed red mud, then add water stirring 10 ~ 20 min, adds quick lime, silicon ash, flyash, ore deposit
Slag, adjustable solidification agent and alkali proof fiber, and the stirring 3 ~ 8min that adds water, are eventually adding hydrogen peroxide stirring 30 s ~ 120s, obtain slip；Will
The slip being stirred, is poured into mould and is foamed, to be foamed completely afterwards band mould be incubated 1 ~ 2 h at 25 ~ 40 DEG C；The 24 h demouldings,
Natural curing 28 d, obtains Red Mud Foam building block.
10. a kind of preparation method of Red Mud Foam building block as claimed in claim 1 it is characterised in that：Using following steps system
Standby obtain：
Step S1：Red mud is dried, sieves after ball milling, obtain red mud powder；
Step S2：Add natrium carbonicum calcinatum, silicon ash to calcine 0.5 ~ 2h at 600～800 DEG C in red mud powder, add after cooling
Enter lignin sulfonic acid calcium powder, calcium stearate, sodium metasilicate, calcium chloride mixing after obtain adjustable solidification agent；
Step S3：Red mud powder is calcined 0.5 ~ 2h at 600～800 DEG C, after cooling, adds surface conditioning agent to stir,
Then it is incubated 0.5 ~ 2 h at a temperature of 90～130 DEG C again, obtain changed red mud；
Step S4：In changed red mud add desulfurated plaster, then add water stirring 10 ~ 20 min, add quick lime, silicon ash,
Flyash, slag, adjustable solidification agent and alkali proof fiber, and the stirring 3 ~ 8min that adds water, are eventually adding hydrogen peroxide stirring 30 s ~ 120s, obtain
To slip；Wherein, the mass concentration of described hydrogen peroxide is 30%；Step S5：By the slip being stirred, it is poured into mould and is foamed,
To be foamed completely afterwards band mould be incubated 1 ~ 2 h at 25 ~ 40 DEG C；The 24 h demouldings, natural curing 28 d, obtain Red Mud Foam building block.
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| CN111393116A (en) * | 2020-03-24 | 2020-07-10 | 中国建筑第五工程局有限公司 | Undisturbed shield muck non-fired building material and preparation method thereof |
| CN112279603A (en) * | 2020-11-10 | 2021-01-29 | 济南大学 | Red mud baking-free brick and preparation method thereof |
| CN114195434A (en) * | 2021-12-16 | 2022-03-18 | 郑州大学 | Geopolymer-based high-ductility concrete for pressing, plastering and reinforcing and preparation method thereof |
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| CN112279603A (en) * | 2020-11-10 | 2021-01-29 | 济南大学 | Red mud baking-free brick and preparation method thereof |
| CN114195434A (en) * | 2021-12-16 | 2022-03-18 | 郑州大学 | Geopolymer-based high-ductility concrete for pressing, plastering and reinforcing and preparation method thereof |
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