CN112723847A - Method for producing aerated concrete by using aeolian sand - Google Patents
Method for producing aerated concrete by using aeolian sand Download PDFInfo
- Publication number
- CN112723847A CN112723847A CN202011632967.3A CN202011632967A CN112723847A CN 112723847 A CN112723847 A CN 112723847A CN 202011632967 A CN202011632967 A CN 202011632967A CN 112723847 A CN112723847 A CN 112723847A
- Authority
- CN
- China
- Prior art keywords
- mixture
- slurry
- aerated concrete
- aeolian sand
- portions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
-
- 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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a method for producing aerated concrete by using aeolian sand, which comprises the following steps of S1-S6: s1: adding water into the aeolian sand and grinding into slurry; s2: blanking and stirring according to the sequence of slurry, waste slurry, gypsum, cement and lime to form a mixture 1; s3: introducing steam into the mixture 1 for heating; s4: adding a catalyst to the mixture 1, and continuing stirring to form a mixture 2; s5: adding aluminum powder to the mixture 2 and stirring to form a mixture 3; s6: discharging and pouring the mixture 3 to obtain an aerated concrete blank; the method takes the aeolian sand as the proportion of siliceous materials for producing the aerated concrete, consumes the aeolian sand in desert, and has low cost and good economical efficiency; the performance of the produced aerated concrete finished product can be changed by adjusting the contents of the catalyst and the aluminum powder, so that different production and processing requirements can be conveniently met.
Description
Technical Field
The invention relates to the technical field of aerated concrete, in particular to a method for producing aerated concrete by utilizing aeolian sand.
Background
In the traditional aerated concrete production process, sand, fly ash, cement, lime and the like are mainly used as main raw materials for production, and the sand mainly comprises river sand and mountain sand, belongs to non-renewable resources, and easily causes environmental pollution due to over exploitation; the aeolian sand is a sand layer which is blown by wind and precipitated, mainly exists in the gobi of the desert, has rich stock, has the grain diameter of between 0.074 and 0.250mm, belongs to fine sand, and is difficult to be used in the production process of common concrete products due to the characteristics of strong collapsibility, non-hydrophilicity and the like; therefore, the aeolian sand in the gobi of the desert is adopted to replace river sand and mountain sand to produce the aerated concrete product, so that the resources can be saved, and the cost can be reduced.
In the existing aerated concrete production process, river sand, fly ash, slag and the like are mostly used as main siliceous materials. Wherein, the aerated concrete product made of the slag and the fly ash has lower strength and poorer carbonization resistance, and the river sand used as the siliceous material faces the problems of shortage of raw materials, increased cost, environmental pollution and the like.
Therefore, a new production method for manufacturing aerated concrete is urgently needed.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a method for producing aerated concrete by using aeolian sand, which can save resources, consume aeolian sand in desert, reduce cost and protect environment.
The invention provides a method for producing aerated concrete by using aeolian sand, which comprises the following steps:
s1: adding water into the aeolian sand and grinding into slurry;
s2: 500 portions of slurry
Waste slurry 150 portions and 190 portions
25-45 parts of gypsum
55-80 parts of lime
110 portions of cement
And the slurry, the waste slurry, the gypsum, the cement and the lime are fed and stirred to form a mixture 1;
s3: introducing steam into the mixture 1 in the S2 for heating;
s4: continuing to stir the mixture 1 in the S3 to form a mixture 2;
s5: adding 0.6-2.6 parts of aluminum powder into the mixture 2 in the S4 and stirring to form a mixture 3;
s6: and discharging and pouring the mixture 3 in the S5.
Further, the method for producing the aerated concrete by using the aeolian sand comprises the following steps of:
s1: adding water into the aeolian sand and grinding into slurry;
s2: slurry taking 510 and 590 parts
160 portions of waste slurry and 180 portions of waste slurry
27-43 parts of gypsum
58 to 77 portions of lime
Cement 112-
12 to 28 portions of catalyst
And the slurry, the waste slurry, the gypsum, the cement and the lime are fed and stirred to form a mixture 1;
s3: introducing steam into the mixture 1 in the S2 for heating;
s4: adding a catalyst to the heated mixture 1 in the step S3, and continuously stirring to form a mixture 2;
s5: adding 0.8-2.4 parts of aluminum powder into the mixture 2 and stirring to form a mixture 3;
s6: and discharging and pouring the mixture 3 in the S5.
Further, the method for producing the aerated concrete by using the aeolian sand comprises the following steps of:
s1: adding water into the aeolian sand and grinding into slurry;
s2: taking 550 parts of slurry
170 portions of waste slurry
35 portions of gypsum
67.5 portions of lime
115 portions of cement
20 parts of a catalyst, namely adding a catalyst,
and the slurry, the waste slurry, the gypsum, the cement and the lime are fed and stirred to form a mixture 1;
s3: introducing water vapor into the mixture 1 in the S2 for heating, and then carrying out a diffusivity test;
s4: after confirming the diffusibility of mixture 1 at S3, 20 parts of a catalyst was added to mixture 1, and stirring was continued to form mixture 2;
s5: adding 1.6 parts of aluminum powder into the mixture 2, and continuously stirring to form a mixture 3;
s6: and discharging and pouring the mixture 3 in the S5.
Further, the catalyst in the S6 is composed of the following raw materials in parts by weight:
10 portions of n-heptane
Toluene 5 parts
8 parts of ethanol.
And further, sequentially pouring n-heptane and toluene into ethanol, and continuously stirring until the n-heptane, the toluene and the ethanol are completely mixed to obtain the catalyst.
Further, in the step S1, the aeolian sand is directly conveyed into a ball mill through a belt and is ground into slurry with the 0.08mm square hole and the screen residue of 20 percent by adding water.
Further, the specific gravity of the slurry in the S2 is 1.550kg/m3The solid content is 57.2 percent; the specific gravity of the waste slurry is 1.410kg/m3The solid content is 48.06 percent; the specific gravity of the gypsum slurry is 1.420kg/m3And the solid content is 55.52 percent.
Further, in S2, stirring is performed immediately before blanking, and stirring is continued during blanking.
Further, the S3 was heated to 42 ℃ with steam to perform the diffusibility test.
Further, the diffusibility of mixture 1 identified in S4 was within a range of 28 ± 1 cm.
According to the method for producing the aerated concrete by using the aeolian sand, the aeolian sand is used as the proportioning of siliceous materials for producing the aerated concrete, so that the aeolian sand in desert is consumed, the cost is low, and the economical efficiency is good; the performance of the produced concrete block finished product can be changed by adjusting the contents of the catalyst and the aluminum powder, so that different production and processing requirements can be conveniently met.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the specific embodiments. The described embodiments are only some embodiments of the invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Comparative example 1
A method for producing aerated concrete by using aeolian sand comprises the following steps:
s1: conveying the aeolian sand into a ball mill by a belt, adding water into the aeolian sand, and grinding the aeolian sand into slurry with the 0.08mm square hole and the screen residue of 20 percent;
s2: taking 500kg of slurry
Waste pulp 150kg
Gypsum, gypsum 25kg
Lime 55kg
110kg of cement is mixed in the cement mixer,
and the slurry, the waste slurry, the gypsum, the cement and the lime are fed and stirred to form a mixture 1;
s3: introducing steam into the mixture 1 in the S2 for heating;
s4: adding 0.6kg of aluminum powder into the mixture 1 in the S3 and stirring to form a mixture 2;
s5: and discharging the mixture 2 in the step S4, and pouring the mixture into a mold frame to form an aerated concrete blank.
Comparative example 2
A method for producing aerated concrete by using aeolian sand comprises the following steps:
s1: conveying the aeolian sand into a ball mill by a belt, adding water into the aeolian sand, and grinding the aeolian sand into slurry with the 0.08mm square hole and the screen residue of 20 percent;
s2: taking 500kg of slurry
Waste pulp 150kg
Gypsum, gypsum 25kg
Lime 55kg
110kg of cement is mixed in the cement mixer,
and the slurry, the waste slurry, the gypsum, the cement and the lime are fed and stirred to form a mixture 1;
s3: introducing steam into the mixture 1 in the S2 for heating;
s4: adding 1.6kg of aluminum powder to the mixture 1 in the S3 and stirring to form a mixture 2;
s5: and discharging the mixture 2 in the step S4, and pouring the mixture into a mold frame to form an aerated concrete blank.
Comparative example 3
A method for producing aerated concrete by using aeolian sand comprises the following steps:
s1: conveying the aeolian sand into a ball mill by a belt, adding water into the aeolian sand, and grinding the aeolian sand into slurry with the 0.08mm square hole and the screen residue of 20 percent;
s2: taking 500kg of slurry
Waste pulp 150kg
Gypsum, gypsum 25kg
Lime 55kg
110kg of cement is mixed in the cement mixer,
and the slurry, the waste slurry, the gypsum, the cement and the lime are fed and stirred to form a mixture 1;
s3: introducing steam into the mixture 1 in the S2 for heating;
s4: adding 2.6kg of aluminum powder to the mixture 1 in the S3 and stirring to form a mixture 2;
s5: and discharging the mixture 2 in the step S4, and pouring the mixture into a mold frame to form an aerated concrete blank.
Putting the aerated concrete blanks produced in S5 in comparative example 1, comparative example 2 and comparative example 3 into an autoclave, and carrying out autoclave curing for 6.5 hours under the conditions of constant pressure of 1.3MPa and constant temperature of 195 ℃ to obtain finished aerated concrete blocks; weighing the obtained aerated concrete block finished product by using an electronic scale, measuring the size and calculating the volume, and finally obtaining the dry density of the aerated concrete block finished product; according to the standard of GB/T11969-2008 autoclaved aerated concrete performance test method, the autoclaved aerated concrete block finished products of the comparative example 1, the comparative example 2 and the comparative example 3 are respectively tested by an aerated concrete strength testing machine, the compressive strength of the autoclaved aerated concrete block finished products is measured, and the test results are shown in Table 1:
TABLE 1
As can be seen from Table 1, the dry densities of the aerated concrete block products of comparative examples 1, 2 and 3 produced by the method were up to 410kg/m3The highest compressive strength reaches 2.7 MPa.
Example 1
A method for producing aerated concrete by using aeolian sand comprises the following steps:
s1: conveying the aeolian sand into a ball mill by a belt, adding water into the aeolian sand, and grinding the aeolian sand into slurry with the 0.08mm square hole and the screen residue of 20 percent;
s2: taking 500kg of slurry
Waste pulp 150kg
Gypsum, gypsum 25kg
Lime 55kg
110kg of cement
10kg of a catalyst was added to the reaction mixture,
and the slurry, the waste slurry, the gypsum, the cement and the lime are fed and stirred to form a mixture 1;
s3: introducing water vapor into the mixture 1 in the S2 for heating, and performing a diffusivity test when the mixture is heated to 42 ℃;
s4: pouring 10kg of n-heptane and 5kg of toluene into 8kg of ethanol in sequence, continuously stirring until the n-heptane, the toluene and the ethanol are completely mixed to prepare a catalyst, confirming that the diffusivity of the mixture 1 of S3 is within the range of 28 +/-1 cm, adding 10kg of the catalyst into the heated mixture 1 of S3, and continuously stirring to form a mixture 2;
s5: adding 0.6kg of aluminum powder into the mixture 2 in the S4 and stirring to form a mixture 3;
s6: and discharging the mixture 3 in the step S5, and pouring the mixture into a mold frame to form an aerated concrete blank.
Example 2
A method for producing aerated concrete by using aeolian sand comprises the following steps:
s1: conveying the aeolian sand into a ball mill by a belt, adding water into the aeolian sand, and grinding the aeolian sand into slurry with the 0.08mm square hole and the screen residue of 20 percent;
s2: taking 550kg of slurry
170kg of waste pulp
Gypsum, 35kg
67.5kg of lime
115kg of cement
20kg of a catalyst is added into the reaction kettle,
and the slurry, the waste slurry, the gypsum, the cement and the lime are fed and stirred to form a mixture 1;
s3: introducing water vapor into the mixture 1 in the S2 for heating, and performing a diffusivity test when the mixture is heated to 42 ℃;
s4: pouring 10kg of n-heptane and 5kg of toluene into 8kg of ethanol in sequence, continuously stirring until the n-heptane, the toluene and the ethanol are completely mixed to prepare a catalyst, confirming that the diffusivity of the mixture 1 of S3 is within the range of 28 +/-1 cm, adding 20kg of the catalyst into the heated mixture 1 of S3, and continuously stirring to form a mixture 2;
s5: adding 1.6kg of aluminum powder into the mixture 2 in the S4 and stirring to form a mixture 3;
s6: and discharging the mixture 3 in the step S5, and pouring the mixture into a mold frame to form an aerated concrete blank.
Example 3
A method for producing aerated concrete by using aeolian sand comprises the following steps:
s1: conveying the aeolian sand into a ball mill by a belt, adding water into the aeolian sand, and grinding the aeolian sand into slurry with the 0.08mm square hole and the screen residue of 20 percent;
s2: taking 600kg of slurry
190kg of waste pulp
45kg of gypsum
Lime 80kg
120kg of cement
30kg of catalyst
And the slurry, the waste slurry, the gypsum, the cement and the lime are fed and stirred to form a mixture 1;
s3: introducing water vapor into the mixture 1 in the S2 for heating, and performing a diffusivity test when the mixture is heated to 42 ℃;
s4: pouring 10kg of n-heptane and 5kg of toluene into 8kg of ethanol in sequence, continuously stirring until the n-heptane, the toluene and the ethanol are completely mixed to prepare a catalyst, confirming that the diffusivity of the mixture 1 of S3 is within the range of 28 +/-1 cm, adding 30kg of the catalyst into the heated mixture 1 of S3, and continuously stirring to form a mixture 2;
s5: adding 2.6kg of aluminum powder into the mixture 2 in the S4 and stirring to form a mixture 3;
s6: and discharging the mixture 3 in the step S5, and pouring the mixture into a mold frame to form an aerated concrete blank.
Putting the aerated concrete blanks produced in S6 in the embodiments 1, 2 and 3 into an autoclave, and carrying out autoclave curing for 6.5 hours under the conditions of constant pressure of 1.3MPa and constant temperature of 195 ℃ to obtain finished aerated concrete blocks; weighing the obtained aerated concrete block finished product by using an electronic scale, measuring the size and calculating the volume, and finally obtaining the dry density of the aerated concrete block finished product; according to the standard of GB/T11969-2008 autoclaved aerated concrete performance test method, the aerated concrete strength test machine is used for testing the autoclaved aerated concrete block finished products of the examples 1, 2 and 3, and the compressive strength of the autoclaved aerated concrete block finished products is measured, and the test results are shown in Table 2:
TABLE 2
Comparison with the data in table 1 shows that the dry density of the aerated concrete block finished products produced in examples 1, 2 and 3 is close and the compressive strength is improved compared with that of comparative examples 1, 2 and 3, so that the addition of the catalyst in the method for producing aerated concrete by using aeolian sand is effective.
Example 4
A method for producing aerated concrete by using aeolian sand comprises the following steps:
s1: conveying the aeolian sand into a ball mill by a belt, adding water into the aeolian sand, and grinding the aeolian sand into slurry with the 0.08mm square hole and the screen residue of 20 percent;
s2: taking 556kg of slurry
173kg of waste pulp
32kg of gypsum
Lime 66kg
115kg of cement is added into the cement paste,
and the slurry, the waste slurry, the gypsum, the cement and the lime are fed and stirred to form a mixture 1;
s3: introducing water vapor into the mixture 1 in the S2 for heating, and performing a diffusivity test when the mixture is heated to 42 ℃;
s4: pouring 10kg of n-heptane and 5kg of toluene into 8kg of ethanol in sequence, continuously stirring until the n-heptane, the toluene and the ethanol are completely mixed to prepare a catalyst, confirming that the diffusivity of the mixture 1 of S3 is within the range of 28 +/-1 cm, adding 14kg of the catalyst into the heated mixture 1 of S3, and continuously stirring to form a mixture 2;
s5: adding 2kg of aluminum powder to the mixture 2 in the S4 and stirring to form a mixture 3;
s6: and discharging the mixture 3 in the step S5, and pouring the mixture into a mold frame to form an aerated concrete blank.
Example 5
A method for producing aerated concrete by using aeolian sand comprises the following steps:
s1: conveying the aeolian sand into a ball mill by a belt, adding water into the aeolian sand, and grinding the aeolian sand into slurry with the 0.08mm square hole and the screen residue of 20 percent;
s2: taking 556kg of slurry
173kg of waste pulp
32kg of gypsum
Lime 66kg
115kg of cement is added into the cement paste,
and the slurry, the waste slurry, the gypsum, the cement and the lime are fed and stirred to form a mixture 1;
s3: introducing water vapor into the mixture 1 in the S2 for heating, and performing a diffusivity test when the mixture is heated to 42 ℃;
s4: pouring 10kg of n-heptane and 5kg of toluene into 8kg of ethanol in sequence, continuously stirring until the n-heptane, the toluene and the ethanol are completely mixed to prepare a catalyst, confirming that the diffusivity of the mixture 1 of S3 is within the range of 28 +/-1 cm, adding 16kg of the catalyst into the heated mixture 1 of S3, and continuously stirring to form a mixture 2;
s5: adding 2kg of aluminum powder to the mixture 2 in the S4 and stirring to form a mixture 3;
s6: and discharging the mixture 3 in the step S5, and pouring the mixture into a mold frame to form an aerated concrete blank.
Example 6
A method for producing aerated concrete by using aeolian sand comprises the following steps:
s1: conveying the aeolian sand into a ball mill by a belt, adding water into the aeolian sand, and grinding the aeolian sand into slurry with the 0.08mm square hole and the screen residue of 20 percent;
s2: taking 556kg of slurry
173kg of waste pulp
32kg of gypsum
Lime 66kg
115kg of cement is added into the cement paste,
and the slurry, the waste slurry, the gypsum, the cement and the lime are fed and stirred to form a mixture 1;
s3: introducing water vapor into the mixture 1 in the S2 for heating, and performing a diffusivity test when the mixture is heated to 42 ℃;
s4: pouring 10kg of n-heptane and 5kg of toluene into 8kg of ethanol in sequence, continuously stirring until the n-heptane, the toluene and the ethanol are completely mixed to prepare a catalyst, confirming that the diffusivity of the mixture 1 of S3 is within the range of 28 +/-1 cm, adding 18kg of the catalyst into the heated mixture 1 of S3, and continuously stirring to form a mixture 2;
s5: adding 2kg of aluminum powder to the mixture 2 in the S4 and stirring to form a mixture 3;
s6: and discharging the mixture 3 in the step S5, and pouring the mixture into a mold frame to form an aerated concrete blank.
Putting the aerated concrete blanks produced in S6 in the embodiments 4, 5 and 6 into an autoclave, and carrying out autoclave curing for 6.5 hours under the conditions of constant pressure of 1.3MPa and constant temperature of 195 ℃ to obtain finished aerated concrete blocks; weighing the obtained aerated concrete block finished product by using an electronic scale, measuring the size and calculating the volume, and finally obtaining the dry density of the aerated concrete block finished product; according to the standard of GB/T11969-2008 autoclaved aerated concrete performance test method, the aerated concrete strength test machine is used for testing the autoclaved aerated concrete block finished products of the examples 4, 5 and 6, and the compressive strength of the autoclaved aerated concrete block finished products is measured, and the test results are shown in Table 3:
TABLE 3
As shown in table 3, when the contents of other components are kept unchanged, the higher the content of the catalyst is, the dry density of the finished aerated concrete block product is close to that of the finished aerated concrete block product, and the compressive strength is higher, so that the catalyst is an effective component of the finished aerated concrete block product prepared by the method for producing aerated concrete by using aeolian sand.
Example 7
A method for producing aerated concrete by using aeolian sand comprises the following steps:
s1: conveying the aeolian sand into a ball mill by a belt, adding water into the aeolian sand, and grinding the aeolian sand into slurry with the 0.08mm square hole and the screen residue of 20 percent;
s2: taking 556kg of slurry
173kg of waste pulp
32kg of gypsum
Lime 66kg
115kg of cement is added into the cement paste,
and the slurry, the waste slurry, the gypsum, the cement and the lime are fed and stirred to form a mixture 1;
s3: introducing water vapor into the mixture 1 in the S2 for heating, and performing a diffusivity test when the mixture is heated to 42 ℃;
s4: pouring 10kg of n-heptane and 5kg of toluene into 8kg of ethanol in sequence, continuously stirring until the n-heptane, the toluene and the ethanol are completely mixed to prepare a catalyst, confirming that the diffusivity of the mixture 1 of S3 is within the range of 28 +/-1 cm, adding 16kg of the catalyst into the heated mixture 1 of S3, and continuously stirring to form a mixture 2;
s5: adding 1kg of aluminum powder into the mixture 2 in the S4 and stirring to form a mixture 3;
s6: and discharging the mixture 3 in the step S5, and pouring the mixture into a mold frame to form an aerated concrete blank.
Example 8
A method for producing aerated concrete by using aeolian sand comprises the following steps:
s1: conveying the aeolian sand into a ball mill by a belt, adding water into the aeolian sand, and grinding the aeolian sand into slurry with the 0.08mm square hole and the screen residue of 20 percent;
s2: taking 556kg of slurry
173kg of waste pulp
32kg of gypsum
Lime 66kg
115kg of cement is added into the cement paste,
and the slurry, the waste slurry, the gypsum, the cement and the lime are fed and stirred to form a mixture 1;
s3: introducing water vapor into the mixture 1 in the S2 for heating, and performing a diffusivity test when the mixture is heated to 42 ℃;
s4: pouring 10kg of n-heptane and 5kg of toluene into 8kg of ethanol in sequence, continuously stirring until the n-heptane, the toluene and the ethanol are completely mixed to prepare a catalyst, confirming that the diffusivity of the mixture 1 of S3 is within the range of 28 +/-1 cm, adding 16kg of the catalyst into the heated mixture 1 of S3, and continuously stirring to form a mixture 2;
s5: adding 1.6kg of aluminum powder into the mixture 2 in the S4 and stirring to form a mixture 3;
s6: and discharging the mixture 3 in the step S5, and pouring the mixture into a mold frame to form an aerated concrete blank.
Example 9
A method for producing aerated concrete by using aeolian sand comprises the following steps:
s1: conveying the aeolian sand into a ball mill by a belt, adding water into the aeolian sand, and grinding the aeolian sand into slurry with the 0.08mm square hole and the screen residue of 20 percent;
s2: taking 556kg of slurry
173kg of waste pulp
32kg of gypsum
Lime 66kg
115kg of cement is added into the cement paste,
and the slurry, the waste slurry, the gypsum, the cement and the lime are fed and stirred to form a mixture 1;
s3: introducing water vapor into the mixture 1 in the S2 for heating, and performing a diffusivity test when the mixture is heated to 42 ℃;
s4: pouring 10kg of n-heptane and 5kg of toluene into 8kg of ethanol in sequence, continuously stirring until the n-heptane, the toluene and the ethanol are completely mixed to prepare a catalyst, confirming that the diffusivity of the mixture 1 of S3 is within the range of 28 +/-1 cm, adding 16kg of the catalyst into the heated mixture 1 of S3, and continuously stirring to form a mixture 2;
s5: adding 2.2kg of aluminum powder to the mixture 2 in the S4 and stirring to form a mixture 3;
s6: and discharging the mixture 3 in the step S5, and pouring the mixture into a mold frame to form an aerated concrete blank.
Putting the aerated concrete blanks produced in S6 in the embodiments 7, 8 and 9 into an autoclave, and carrying out autoclave curing for 6.5 hours under the conditions of constant pressure of 1.3MPa and constant temperature of 195 ℃ to obtain finished aerated concrete blocks; weighing the obtained aerated concrete block finished product by using an electronic scale, measuring the size and calculating the volume, and finally obtaining the dry density of the aerated concrete block finished product; according to the standard of GB/T11969-2008 autoclaved aerated concrete performance test method, the aerated concrete strength test machine is used for testing the autoclaved aerated concrete block finished products of the examples 7, 8 and 9, and the compressive strength of the autoclaved aerated concrete block finished products is measured, and the test results are shown in Table 4:
TABLE 4
As shown in table 4, when the contents of other components are kept unchanged, the higher the content of the aluminum powder is, the smaller the dry density of the finished aerated concrete block product is, and the difference of the compressive strength is not large, so that the aluminum powder is an effective component of the finished aerated concrete block produced by the method for producing aerated concrete by using aeolian sand.
In conclusion, the method for producing the aerated concrete by using the aeolian sand provided by the invention takes the aeolian sand as the proportioning of the siliceous material for producing the aerated concrete, consumes the aeolian sand in the desert, and has low cost and good economical efficiency; the performance of the produced concrete block finished product can be changed by adjusting the contents of the catalyst and the aluminum powder, so that different production and processing requirements can be conveniently met.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A method for producing aerated concrete by using aeolian sand is characterized by comprising the following steps:
s1: adding water into the aeolian sand and grinding into slurry;
s2: 500 portions of slurry
Waste slurry 150 portions and 190 portions
25-45 parts of gypsum
55-80 parts of lime
110 portions of cement
And the slurry, the waste slurry, the gypsum, the cement and the lime are fed and stirred to form a mixture 1;
s3: introducing steam into the mixture 1 in the S2 for heating;
s4: continuing to stir the mixture 1 in the S3 to form a mixture 2;
s5: adding 0.6-2.6 parts of aluminum powder into the mixture 2 in the S4 and stirring to form a mixture 3;
s6: and discharging and pouring the mixture 3 in the S5.
2. The method for producing aerated concrete by using aeolian sand according to claim 1, comprising the following steps:
s1: adding water into the aeolian sand and grinding into slurry;
s2: taking 550 parts of slurry
170 portions of waste slurry
35 portions of gypsum
67.5 portions of lime
115 portions of cement
20 portions of catalyst
And the slurry, the waste slurry, the gypsum, the cement and the lime are fed and stirred to form a mixture 1;
s3: introducing water vapor into the mixture 1 in the S2 for heating, and then carrying out a diffusivity test;
s4: after confirming the diffusibility of mixture 1 at S3, 20 parts of a catalyst was added to mixture 1, and stirring was continued to form mixture 2;
s5: adding 1.6 parts of aluminum powder into the mixture 2, and continuously stirring to form a mixture 3;
s6: and discharging and pouring the mixture 3 in the S5.
3. The method for producing aerated concrete by using aeolian sand according to claim 1, wherein the catalyst in the step S4 is prepared from the following raw materials in parts by weight:
10 portions of n-heptane
Toluene 5 parts
8 parts of ethanol.
4. The method for producing aerated concrete by using aeolian sand as claimed in claim 4, wherein the catalyst is prepared by sequentially pouring n-heptane and toluene into ethanol and continuously stirring until n-heptane, toluene and ethanol are completely mixed.
5. The method for producing aerated concrete by using aeolian sand as claimed in claim 1, wherein in said step S1, aeolian sand is directly conveyed into a ball mill through a belt and is ground into slurry with 0.08mm square hole and 20% of screen residue by adding water.
6. The method for producing aerated concrete by using aeolian sand as claimed in claim 1, wherein the specific gravity of slurry in said S2 is 1.550kg/m3The solid content is 57.2 percent; the specific gravity of the waste slurry is 1.410kg/m3The solid content is 48.06 percent; the specific gravity of the gypsum slurry is 1.420kg/m3And the solid content is 55.52 percent.
7. The method for producing aerated concrete from aeolian sand according to claim 1, wherein said stirring is carried out immediately before blanking in S2 and is continued during blanking.
8. The method for producing aerated concrete by using aeolian sand according to claim 1, wherein the diffusibility test is carried out when water vapor is introduced into the S3 and the temperature is raised to 42 ℃.
9. The method for producing aerated concrete from aeolian sand according to claim 1, wherein the diffusivity of mixture 1 identified in S4 is within the range of 28 ± 1 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011632967.3A CN112723847A (en) | 2020-12-31 | 2020-12-31 | Method for producing aerated concrete by using aeolian sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011632967.3A CN112723847A (en) | 2020-12-31 | 2020-12-31 | Method for producing aerated concrete by using aeolian sand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112723847A true CN112723847A (en) | 2021-04-30 |
Family
ID=75608440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011632967.3A Pending CN112723847A (en) | 2020-12-31 | 2020-12-31 | Method for producing aerated concrete by using aeolian sand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112723847A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113800841A (en) * | 2021-09-16 | 2021-12-17 | 四川杭加坤正新型材料有限公司 | Lime-free aerated concrete product and production method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2602234A1 (en) * | 2011-12-07 | 2013-06-12 | Vilnius Gediminas Technical University | Method for manufacturing of products from autoclaved aerated concrete and composition of autoclaved aerated concrete |
| CN104163651A (en) * | 2014-07-18 | 2014-11-26 | 景泰富海阳光建材有限责任公司 | Autoclaved aeolian sand aerated concrete building block and wallboard |
| CN106588076A (en) * | 2016-11-16 | 2017-04-26 | 古浪县兴达新型环保建材有限公司 | Manufacturing method for aerated brick with aeolian sand as main materials |
| CN108358591A (en) * | 2018-02-11 | 2018-08-03 | 中科镁基（北京）科技有限公司 | Building material compositions and preparation method thereof containing drift-sand |
| CN111533504A (en) * | 2020-04-10 | 2020-08-14 | 中铁大桥科学研究院有限公司 | Ultrahigh-performance concrete formed by mixing machine-made sand and aeolian sand and preparation method thereof |
-
2020
- 2020-12-31 CN CN202011632967.3A patent/CN112723847A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2602234A1 (en) * | 2011-12-07 | 2013-06-12 | Vilnius Gediminas Technical University | Method for manufacturing of products from autoclaved aerated concrete and composition of autoclaved aerated concrete |
| CN104163651A (en) * | 2014-07-18 | 2014-11-26 | 景泰富海阳光建材有限责任公司 | Autoclaved aeolian sand aerated concrete building block and wallboard |
| CN106588076A (en) * | 2016-11-16 | 2017-04-26 | 古浪县兴达新型环保建材有限公司 | Manufacturing method for aerated brick with aeolian sand as main materials |
| CN108358591A (en) * | 2018-02-11 | 2018-08-03 | 中科镁基（北京）科技有限公司 | Building material compositions and preparation method thereof containing drift-sand |
| CN111533504A (en) * | 2020-04-10 | 2020-08-14 | 中铁大桥科学研究院有限公司 | Ultrahigh-performance concrete formed by mixing machine-made sand and aeolian sand and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 陈雅福: "《新型建筑材料》", 30 September 1994, 中国建材工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113800841A (en) * | 2021-09-16 | 2021-12-17 | 四川杭加坤正新型材料有限公司 | Lime-free aerated concrete product and production method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101948331B (en) | Autoclaved aerated concrete building block and preparation method thereof | |
| CN105541384B (en) | A kind of ultralight foam concrete and preparation method thereof | |
| CN104355560B (en) | A kind of production method of α-high strength gypsum powder | |
| CN105152610B (en) | A kind of method of utilization fecula modified raw soil material | |
| CN105777184A (en) | Autoclaved aerated concrete building block adopting ceramic polishing waste and preparation method thereof | |
| CN103011733A (en) | Waste base polymer building block and fabrication method thereof | |
| CN107651918A (en) | A kind of RPC containing waste and old steel fibre and preparation method thereof | |
| CN113955999B (en) | Retro brick prepared based on steel slag carbonization and preparation method thereof | |
| CN102351501A (en) | Cement-based grouting material and preparation method thereof | |
| CN110950619A (en) | Preparation method for producing autoclaved aerated concrete from lithium slag and product thereof | |
| CN105418043A (en) | Environmental protection brick and preparation method thereof | |
| CN112194417A (en) | Foaming non-steamed building block based on gasified slag and preparation method thereof | |
| Alaneme et al. | Eco-friendly agro-waste based geopolymer-concrete: A systematic review | |
| CN105330254A (en) | Environmentally friendly bricks and production method thereof | |
| CN112723847A (en) | Method for producing aerated concrete by using aeolian sand | |
| CN109133789A (en) | A kind of foamed concrete and preparation method thereof and assembled architecture component using it | |
| CN101955375A (en) | Method for recycling waste concrete broken fine particles | |
| CN105016769A (en) | Recycling method of solid waste produced during autoclaved aerated concrete block production | |
| CN101585686B (en) | Method for preparing dry powder heat insulating material by smashed non metal residual of abandoned electronic circuit board | |
| CN115466090B (en) | Cement-based 3D printing material utilizing solid waste as well as preparation method and application thereof | |
| CN102199026B (en) | Hollow building block manufactured from electrolytic manganese residues and manufacture method thereof | |
| CN105859232A (en) | Autoclaved sand-lime brick produced from industrial sludge, and production method thereof | |
| CN106631107B (en) | Mica tailing aerated building block and preparation method thereof | |
| CN112266196B (en) | Method for preparing fair-faced concrete by utilizing recycled water of concrete mixing plant | |
| CN110563426B (en) | Steam-cured high-strength brick prepared from mine salt mud and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210430 |
|
| RJ01 | Rejection of invention patent application after publication |