CN109734405A - A kind of waterproof heat-resisting building gypsum and preparation method thereof - Google Patents
A kind of waterproof heat-resisting building gypsum and preparation method thereof Download PDFInfo
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- CN109734405A CN109734405A CN201910217684.3A CN201910217684A CN109734405A CN 109734405 A CN109734405 A CN 109734405A CN 201910217684 A CN201910217684 A CN 201910217684A CN 109734405 A CN109734405 A CN 109734405A
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- gypsum
- silt
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Abstract
The invention discloses a kind of waterproof heat-resisting building gypsums and preparation method thereof, are related to building material technical field.The waterproof heat-resisting building gypsum, including following raw material: waste gypsum module, desulfurized gypsum, crystal modifier, silt, lignosulfonates and naphthalene sulphonate formaldehyde polymer；The waste gypsum module is the CaSO that purity is 88%~92%4·2H2O；Husky content is 90~93% in the silt.The present invention provides a kind of waterproof heat-resisting building gypsum and preparation method thereof, this preparation method is simple, and gained gypsum has good waterproof, high temperature resistance.
Description
Technical field
The present invention relates to building material technical field more particularly to a kind of waterproof heat-resisting building gypsum and its preparation sides
Method.
Background technique
Gypsum is monoclinic system mineral, and main component is calcium sulfate (Ca2SO4) hydrate, it is a kind of widely used
Industrial materials and construction material, along with the development of plastering industry, it is various difference purposes land plaster also pushed away in succession
Extensively, especially in building material industry, as the improvement of people's living standards, the quality requirements to living environment are higher and higher, it is high-end
Building is increasingly increasing, and gypsum can be used for cement retarder, gypsum building products and Mold Making, already becomes building materials city
Important and well sold and in short supply one of the product of field has become the focus of people's research so how to carry out the cycling and reutilization of gypsum
One of.
When fire occurs, wall heat insulation material some heat resistances in the market are poor, cause fire spread, to people's
Lives and properties cause very big harm, and exploitation low-carbon and heat-resisting material are the pursuit of researcher all the time, common
The function of gypsum high temperature resistant and waterproof is poor.
Therefore, pole needs to research and develop a kind of waterproof heat-resisting building gypsum, and can using waste plaster as raw material, with
The cyclic utilization of waste reaches needed for market.
Summary of the invention
In view of the above problems, the present invention provides a kind of waterproof heat-resisting building gypsum and preparation method thereof, this
Kind preparation method is simple, and gained gypsum has good waterproof, high temperature resistance.
The technical solution of the present invention is as follows:
A kind of waterproof heat-resisting building gypsum, including following raw material: waste gypsum module, desulfurized gypsum, crystal modifier, silt, wood
Mahogany sulfonate and naphthalene sulphonate formaldehyde polymer；The waste gypsum module is the CaSO that purity is 88%~92%4·2H2O；
Husky content is 90~93% in the silt.
Further, the waste gypsum module, desulfurized gypsum, crystal modifier, silt, lignosulfonates and naphthalene sulfonate
The weight ratio of yuban are as follows: 8:(1~2): (0.5~0.8): (1~3): (0.002~0.003): 0.003.
Further, the waste gypsum module, desulfurized gypsum, crystal modifier, silt, lignosulfonates and naphthalene sulfonate
The weight ratio of yuban are as follows: 8:1.5:0.78:2:0.002:0.003.
Specifically, the lignosulfonates are sodium lignin sulfonate；The naphthalene sulphonate formaldehyde polymer is naphthalene sulfonic acids
Sodium formaldehyde condensation polymer.
Further, the crystal modifier is the mixture of sodium citrate and zinc sulfate, wherein the quality percentage of sodium citrate
Than being 0.025~0.031%.
Further, the preparation method of a kind of waterproof heat-resisting building gypsum, including the following steps:
S1. it is crushed: the waste gypsum module, desulfurized gypsum, lignosulfonates and naphthalene sulphonate formaldehyde polymer is put into
It is crushed into crusher, partial size is 0~1cm after being crushed, and obtains broken material；
S2. it is dehydrated: the broken material and crystal modifier being put into 126~180 DEG C of progress, 30~45min in rotary kiln simultaneously and taken off
Water obtains semi-hydrated gypsum；
S3. cool down precipitation: the semi-hydrated gypsum being transferred in precipitation device and carries out Temperature fall, temperature is down to 30~80 DEG C, heat preservation
7~9 days, half graininess gypsum；
S4. it dry grinds: the half graininess gypsum and silt being respectively put into two flour mills and are ground to powdery, excessively 120~
220 meshes obtain gypsum powder body and silt powder respectively；
S5. it mixes: the gypsum powder body being subjected to 1~2h stirring with silt powder in blender and is built to get waterproof heat-resisting
Build gypsum.
Further, the stirring rate of blender described in the step S5 is 300rpm, and temperature is 30~55 DEG C.
In conclusion beneficial effects of the present invention show themselves in that the preparation method of waterproof heat-resisting building gypsum of the invention
Simply, convenient, using Temperature fall precipitation, semi-hydrated gypsum is made to be gradually converted into half graininess gypsum, has more consolidated half water stone
The crystal form of cream, enhances temperature tolerance；Silt and gypsum are subjected to milling operation, 120~220 mesh is chosen and sufficiently mix
It closes, enhances its conformability, good temperature tolerance and waterproofness are shown in subsequent use.
Specific embodiment
Below in conjunction with specific embodiment, the present invention will be described in detail:
A kind of waterproof heat-resisting building gypsum, including following raw material: waste gypsum module, desulfurized gypsum, crystal modifier, silt, wood
Mahogany sulfonate and naphthalene sulphonate formaldehyde polymer；The waste gypsum module is the CaSO that purity is 88%~92%4·2H2O；
Husky content is 90~93% in the silt.
Preferably, the waste gypsum module, desulfurized gypsum, crystal modifier, silt, lignosulfonates and naphthalene sulfonate first
The weight ratio of aldehyde polymer are as follows: 8:(1~2): (0.5~0.8): (1~3): (0.002~0.003): 0.003.
Preferably, the waste gypsum module, desulfurized gypsum, crystal modifier, silt, lignosulfonates and naphthalene sulfonate first
The weight ratio of aldehyde polymer are as follows: 8:1.5:0.78:2:0.002:0.003.
Preferably, the crystal modifier is the mixture of sodium citrate and zinc sulfate, wherein the mass percent of sodium citrate
It is 0.025~0.031%.
Preferably, the preparation method of a kind of waterproof heat-resisting building gypsum, including the following steps:
S1. it is crushed: the waste gypsum module, desulfurized gypsum, lignosulfonates and naphthalene sulphonate formaldehyde polymer is put into
It is crushed into crusher, partial size is 0~1cm after being crushed, and obtains broken material；
S2. it is dehydrated: the broken material and crystal modifier being put into 126~180 DEG C of progress, 30~45min in rotary kiln simultaneously and taken off
Water obtains semi-hydrated gypsum；
S3. cool down precipitation: the semi-hydrated gypsum being transferred in precipitation device and carries out Temperature fall, temperature is down to 30~80 DEG C, heat preservation
7~9 days, half graininess gypsum；
S4. it dry grinds: the half graininess gypsum and silt being respectively put into two flour mills and are ground to powdery, excessively 120~
220 meshes obtain gypsum powder body and silt powder respectively；
S5. it mixes: the gypsum powder body being subjected to 1~2h stirring with silt powder in blender and is built to get waterproof heat-resisting
Build gypsum.
Preferably, the stirring rate of blender described in the step S5 is 300rpm, and temperature is 30~55 DEG C.
Embodiment of the present invention can be replaced by the difference of specific range based on the above technical solution,
Available numerous embodiment, therefore, several embodiments as described below are only merely the more excellent reality in numerous embodiment
Example is applied, any technology replacement done in above-mentioned technical proposal all belongs to the scope of protection of the present invention.
Embodiment 1
A kind of preparation method of waterproof heat-resisting building gypsum, including following raw material: waste gypsum module, turns crystalline substance at desulfurized gypsum
Agent, silt, sodium lignin sulfonate and naphthalene sulfonate formaldehyde condensation polymer；The waste gypsum module is the CaSO that purity is 88%4·
2H2O；Husky content is 90% in the silt.
A kind of preparation method of waterproof heat-resisting building gypsum, including the following steps:
S1. it is crushed: the waste gypsum module, desulfurized gypsum, sodium lignin sulfonate and naphthalene sulfonate formaldehyde condensation polymer is thrown
Enter and be crushed into crusher, partial size is 0.5cm after being crushed, and obtains broken material；
S2. it is dehydrated: the broken material and crystal modifier is put into simultaneously in rotary kiln and carry out 150 DEG C, 38min dehydration, obtains half
Water gypsum；
S3. cool down precipitation: the semi-hydrated gypsum is transferred in precipitation device and carries out Temperature fall, temperature is down to 60 DEG C, and 7 days are kept the temperature,
Half graininess gypsum；
S4. it dry grinds: the half graininess gypsum and silt being respectively put into two flour mills and are ground to powdery, cross 120 mesh
Sieve obtains gypsum powder body and silt powder respectively；
S5. it mixes: the gypsum powder body and silt powder is subjected to 1h stirring, stirring rate 300rpm, temperature in blender
Degree is for 55 DEG C to get waterproof heat-resisting building gypsum.
The waste gypsum module, desulfurized gypsum, crystal modifier, silt, sodium lignin sulfonate and naphthalene sulfonate formaldehyde polycondensation
The weight ratio of object are as follows: 8:1.5:0.78:2:0.002:0.003.
The crystal modifier is the mixture of sodium citrate and zinc sulfate, and wherein the mass percent of sodium citrate is
0.025%。
Embodiment 2
A kind of preparation method of waterproof heat-resisting building gypsum, including following raw material: waste gypsum module, turns crystalline substance at desulfurized gypsum
Agent, silt, sodium lignin sulfonate and naphthalene sulfonate formaldehyde condensation polymer；The waste gypsum module is the CaSO that purity is 92%4·
2H2O；Husky content is 93% in the silt.
A kind of preparation method of waterproof heat-resisting building gypsum, including the following steps:
S1. it is crushed: the waste gypsum module, desulfurized gypsum, sodium lignin sulfonate and naphthalene sulfonate formaldehyde condensation polymer is thrown
Enter and be crushed into crusher, partial size is 1cm after being crushed, and obtains broken material；
S2. it is dehydrated: the broken material and crystal modifier is put into simultaneously in rotary kiln and carry out 126 DEG C, 30min dehydration, obtains half
Water gypsum；
S3. cool down precipitation: the semi-hydrated gypsum is transferred in precipitation device and carries out Temperature fall, temperature is down to 30 DEG C, and 9 days are kept the temperature,
Half graininess gypsum；
S4. it dry grinds: the half graininess gypsum and silt being respectively put into two flour mills and are ground to powdery, cross 220 mesh
Sieve obtains gypsum powder body and silt powder respectively；
S5. it mixes: the gypsum powder body and silt powder is subjected to 2h stirring, stirring rate 300rpm, temperature in blender
Degree is for 40 DEG C to get waterproof heat-resisting building gypsum.
The waste gypsum module, desulfurized gypsum, crystal modifier, silt, sodium lignin sulfonate and naphthalene sulfonate formaldehyde polycondensation
The weight ratio of object are as follows: 8:2:0.5:1:0.003:0.003.
The crystal modifier is the mixture of sodium citrate and zinc sulfate, and wherein the mass percent of sodium citrate is
0.031%。
Embodiment 3
A kind of preparation method of waterproof heat-resisting building gypsum, including following raw material: waste gypsum module, turns crystalline substance at desulfurized gypsum
Agent, silt, sodium lignin sulfonate and naphthalene sulfonate formaldehyde condensation polymer；The waste gypsum module is the CaSO that purity is 90%4·
2H2O；Husky content is 92% in the silt.
A kind of preparation method of waterproof heat-resisting building gypsum, including the following steps:
S1. it is crushed: the waste gypsum module, desulfurized gypsum, sodium lignin sulfonate and naphthalene sulfonate formaldehyde condensation polymer is thrown
Enter and be crushed into crusher, partial size is 0.3cm after being crushed, and obtains broken material；
S2. it is dehydrated: the broken material and crystal modifier is put into simultaneously in rotary kiln and carry out 180 DEG C, 45min dehydration, obtains half
Water gypsum；
S3. cool down precipitation: the semi-hydrated gypsum is transferred in precipitation device and carries out Temperature fall, temperature is down to 80 DEG C, and 8 days are kept the temperature,
Half graininess gypsum；
S4. it dry grinds: the half graininess gypsum and silt being respectively put into two flour mills and are ground to powdery, cross 180 mesh
Sieve obtains gypsum powder body and silt powder respectively；
S5. it mixes: the gypsum powder body and silt powder is subjected to 1.5h stirring in blender, stirring rate 300rpm,
Temperature is 30 DEG C to get waterproof heat-resisting building gypsum.
The waste gypsum module, desulfurized gypsum, crystal modifier, silt, sodium lignin sulfonate and naphthalene sulfonate formaldehyde polycondensation
The weight ratio of object are as follows: 8:1:0.8:3:0.0025:0.003.
The crystal modifier is the mixture of sodium citrate and zinc sulfate, and wherein the mass percent of sodium citrate is
0.028%。
Comparative example 1
A kind of preparation method of waterproof heat-resisting building gypsum, including following raw material: waste gypsum module, turns crystalline substance at desulfurized gypsum
Agent, sodium lignin sulfonate and naphthalene sulfonate formaldehyde condensation polymer；The main component of the waste gypsum module is CaSO4·2H2O is pure
Degree is 88%.
A kind of preparation method of waterproof heat-resisting building gypsum, including the following steps:
S1. it is crushed: the waste gypsum module, desulfurized gypsum, sodium lignin sulfonate and naphthalene sulfonate formaldehyde condensation polymer is thrown
Enter and be crushed into crusher, partial size is 0.5cm after being crushed, and obtains broken material；
S2. it is dehydrated: the broken material and crystal modifier is put into simultaneously in rotary kiln and carry out 150 DEG C, 38min dehydration, obtains half
Water gypsum；
S3. cool down precipitation: the semi-hydrated gypsum is transferred in precipitation device and carries out Temperature fall, temperature is down to 60 DEG C, and 7 days are kept the temperature,
Half graininess gypsum；
S4. it dry grinds: the half graininess gypsum being put into flour mill and is ground to powdery, cross 120 meshes, obtain gypsum powder body；
S5. it mixing: the gypsum powder body is subjected to 1h stirring, stirring rate 300rpm in blender, temperature is 55 DEG C,
Up to waterproof heat-resisting building gypsum.
The waste gypsum module, desulfurized gypsum, crystal modifier, sodium lignin sulfonate and naphthalene sulfonate formaldehyde condensation polymer weight
Measure ratio are as follows: 8:1.5:0.5:0.001:0.001.
The crystal modifier is the mixture of sodium citrate and zinc sulfate, and wherein the mass percent of sodium citrate is
0.025%。
Waterproof heat-resisting building gypsum obtained by Examples 1 to 4 is mixed with water with the weight ratio of 10:6, is sufficiently stirred
Slurry is made, correlated performance test will be carried out after slurry molding, demoulding, drying, cooling, the results are shown in Table 1.
The high temperature resistance of the resulting plastering of Examples 1 to 3 is better than the high temperature resistance of comparative example 1.
The invention is not limited to specific embodiments above-mentioned.The present invention expands to any to be disclosed in the present specification
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (6)
1. a kind of waterproof heat-resisting building gypsum, which is characterized in that including following raw material: waste gypsum module, turns desulfurized gypsum
Brilliant agent, silt, lignosulfonates and naphthalene sulphonate formaldehyde polymer；It is 88%~92% that the waste gypsum module, which is purity,
CaSO4·2H2O；Husky content is 90~93% in the silt.
2. a kind of waterproof heat-resisting building gypsum as described in claim 1, which is characterized in that the waste gypsum module takes off
The weight ratio of sulphur gypsum, crystal modifier, silt, lignosulfonates and naphthalene sulphonate formaldehyde polymer are as follows: 8:(1~2): (0.5~
0.8): (1~3): (0.002~0.003): 0.003.
3. a kind of waterproof heat-resisting building gypsum as claimed in claim 2, which is characterized in that the waste gypsum module takes off
The weight ratio of sulphur gypsum, crystal modifier, silt, lignosulfonates and naphthalene sulphonate formaldehyde polymer are as follows: 8:1.5:0.78:2:
0.002:0.003。
4. a kind of waterproof heat-resisting building gypsum as described in claims 1 to 3, which is characterized in that the crystal modifier is lemon
The mixture of sour sodium and zinc sulfate, wherein the mass percent of sodium citrate is 0.025~0.031%.
5. a kind of preparation method of waterproof heat-resisting building gypsum as described in claim 1, which is characterized in that including following step
It is rapid:
S1. it is crushed: the waste gypsum module, desulfurized gypsum, lignosulfonates and naphthalene sulphonate formaldehyde polymer is put into
It is crushed into crusher, partial size is 0~1cm after being crushed, and obtains broken material；
S2. it is dehydrated: the broken material and crystal modifier being put into 126~180 DEG C of progress, 30~45min in rotary kiln simultaneously and taken off
Water obtains semi-hydrated gypsum；
S3. cool down precipitation: the semi-hydrated gypsum being transferred in precipitation device and carries out Temperature fall, temperature is down to 30~80 DEG C, heat preservation
7~9 days, half graininess gypsum；
S4. it dry grinds: the half graininess gypsum and silt being respectively put into two flour mills and are ground to powdery, excessively 120~
220 meshes obtain gypsum powder body and silt powder respectively；
S5. it mixes: the gypsum powder body being subjected to 1~2h stirring with silt powder in blender and is built to get waterproof heat-resisting
Build gypsum.
6. a kind of preparation method of waterproof heat-resisting building gypsum as claimed in claim 5, which is characterized in that the step S5
Described in blender stirring rate be 300rpm, temperature be 30~55 DEG C.
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Cited By (1)
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| CN111763023A (en) * | 2020-06-01 | 2020-10-13 | 嘉兴市爵拓科技有限公司 | Enhanced environment-friendly ceramic gypsum mold and preparation method thereof |
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Application publication date: 20190510 |