CN118125779A - Gap filler based on gold tailings and preparation process thereof - Google Patents
Gap filler based on gold tailings and preparation process thereof Download PDFInfo
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- CN118125779A CN118125779A CN202410555017.7A CN202410555017A CN118125779A CN 118125779 A CN118125779 A CN 118125779A CN 202410555017 A CN202410555017 A CN 202410555017A CN 118125779 A CN118125779 A CN 118125779A
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- diatomite
- gold tailings
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 239000010931 gold Substances 0.000 title claims abstract description 63
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 63
- 239000000945 filler Substances 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 30
- 239000000839 emulsion Substances 0.000 claims abstract description 28
- 239000000843 powder Substances 0.000 claims abstract description 26
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 16
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000011575 calcium Substances 0.000 claims abstract description 14
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 14
- 239000004568 cement Substances 0.000 claims abstract description 14
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims abstract description 14
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 20
- 239000007787 solid Substances 0.000 claims description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 15
- 235000019441 ethanol Nutrition 0.000 claims description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- -1 alcohol ester Chemical class 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 11
- 238000001354 calcination Methods 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000011812 mixed powder Substances 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 239000008103 glucose Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 238000009210 therapy by ultrasound Methods 0.000 claims description 3
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 3
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 2
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 claims description 2
- CUDYYMUUJHLCGZ-UHFFFAOYSA-N 2-(2-methoxypropoxy)propan-1-ol Chemical compound COC(C)COC(C)CO CUDYYMUUJHLCGZ-UHFFFAOYSA-N 0.000 claims description 2
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000011499 joint compound Substances 0.000 claims description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 2
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 claims description 2
- 239000000306 component Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 28
- 238000012360 testing method Methods 0.000 description 17
- 238000002156 mixing Methods 0.000 description 15
- 239000000203 mixture Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- 229910001566 austenite Inorganic materials 0.000 description 4
- 239000011083 cement mortar Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000011256 inorganic filler Substances 0.000 description 3
- 229910003475 inorganic filler Inorganic materials 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229920005789 ACRONAL® acrylic binder Polymers 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- 241000233805 Phoenix Species 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000002156 adsorbate Substances 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 238000005576 amination reaction Methods 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000007833 carbon precursor Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005264 electron capture Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 150000002466 imines Chemical class 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the field of joint filling agents, in particular to a joint filling agent based on gold tailings and a preparation process thereof, and the joint filling agent comprises the following components in parts by weight: 10-20 parts of cement, 10-20 parts of gold tailing powder @ carbon, 10-20 parts of heavy calcium powder, 10-20 parts of aminated diatomite, 50-70 parts of styrene-acrylic emulsion, 30-40 parts of VAE emulsion, 3-6 parts of film forming auxiliary agent and 0.5-1 part of silane coupling agent.
Description
Technical Field
The invention relates to the field of caulking agents, in particular to a caulking agent based on gold tailings and a preparation process thereof.
Background
The joint filling agent is used as a building material for filling gaps between ceramic tiles and stone materials, has good decoration effect, can offset stress generated by expansion and contraction of the ceramic tiles and the stone materials, is more attractive, can effectively prevent moisture from invading the gaps between the ceramic tiles, the stone materials and the wall body to cause mildew, generate unpleasant smell or fall off, and can be divided into three parts of base materials, inorganic fillers and auxiliary agents according to the performance and the effect at present. Wherein, the inorganic filler is mainly inorganic mineral powder, has filling and reinforcing effects, adopts talcum powder and calcium carbonate, and has no report of using gold tailings as an inorganic filler of a joint mixture at present.
Disclosure of Invention
The invention aims to: aiming at the technical problems, the invention provides a gap filler based on gold tailings and a preparation process thereof.
The technical scheme adopted is as follows:
The gap filler based on the gold tailings comprises the following components in parts by weight:
10-20 parts of cement, 10-20 parts of gold tailing powder @ carbon, 10-20 parts of heavy calcium powder, 10-20 parts of aminated diatomite, 50-70 parts of styrene-acrylic emulsion, 30-40 parts of VAE emulsion, 3-6 parts of film forming auxiliary agent and 0.5-1 part of silane coupling agent.
Further, the preparation method of the gold tailing powder@carbon comprises the following steps:
crushing gold tailings, adding the crushed gold tailings into absolute ethyl alcohol, adding glucose aqueous solution after ultrasonic treatment, stirring for more than 1h, heating to remove a solvent, drying to obtain mixed powder, and finally calcining the mixed powder under the protection of inert gas.
Further, the grain diameter of the crushed gold tailings is less than or equal to 5 mu m.
Further, the mass fraction of the ferric oxide in the gold tailings is more than or equal to 8%.
Further, the calcination temperature is 280-300 ℃ and the calcination time is 1-3h.
Further, the preparation method of the aminated diatomite comprises the following steps:
Activating diatomite with sodium hydroxide solution, washing, drying, adding into ethanol, performing ultrasonic dispersion to obtain suspension, adding diethylenetriamine into the suspension, stirring in water bath at 40-60 ℃ for 10-20h, filtering out solid, washing, and drying.
Further, the film forming auxiliary agent is any one or a combination of more of alcohol ester twelve, diethylene glycol butyl ether, dipropylene glycol methyl ether, ethylene glycol monobutyl ether, propylene glycol methyl ether acetate and propylene glycol monomethyl ether.
Further, the silane coupling agent is any one or more of KH-550, KH-560 and KH-570.
The invention also provides a preparation process of the joint mixture based on gold tailings, which comprises the following steps:
And (3) after the styrene-acrylic emulsion and the VAE emulsion are premixed, adding a film forming additive and a silane coupling agent, uniformly mixing to obtain a liquid component, uniformly mixing cement, gold tailing powder @ carbon, heavy calcium powder and aminated diatomite to obtain a solid component, and finally uniformly mixing the liquid component and the solid component.
The invention has the beneficial effects that:
The invention provides a gap filler based on gold tailings, wherein the gold tailings have higher content of Fe 2O3, the inventor takes glucose as a carbon precursor to coat a carbon layer on the surface of gold tailings powder, and controls the calcination temperature to ensure that Fe 2O3 is completely converted into gamma-Fe 2O3, a gamma-Fe 2O3 @carbon heterojunction is formed, and the photoelectric synergism formed between gamma-Fe 2O3 and a carbon layer ensures that part of carbon becomes an electron capture center, inhibits the recombination of electron-hole pairs, and causes the band gap of gamma-Fe 2O3 @carbon to be reduced, and when the visible light irradiation energy is larger than the band gap value, more photo-generated carriers can be excited to move to active sites on the surface of the carbon layer to participate in catalytic reaction, so that the photocatalytic degradation activity of the gap filler is further improved;
The diatomite has larger specific surface area and porosity and excellent chemical stability and physical property, a large number of pore channels in the structure can provide space for adsorbates, formaldehyde molecules are adsorbed by virtue of Van der Waals force, a large number of amino groups can be provided by the aminated diatomite, the electron cloud density around the diatomite pores is increased, and the diatomite is combined with unsaturated carbon groups in the formaldehyde molecules to adsorb and degrade formaldehyde to generate a compound containing imine (-N=C=) groups, so that in the process, the contact between gold tailing powder and formaldehyde is increased, and the effect of decomposing formaldehyde by the gold tailing powder is promoted;
The prepared joint mixture has good mechanical property and excellent formaldehyde resistance, and the introduction of the carbon coating layer and the aminated diatomite plays a positive role in improving the formaldehyde resistance of the joint mixture through comparison.
Detailed Description
The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention. The technology not mentioned in the present invention refers to the prior art, and unless otherwise indicated, the following examples and comparative examples are parallel tests, employing the same processing steps and parameters.
And (3) cement: PO42.5 Portland cement, conch;
Gold tailing powder @ carbon: self-making;
heavy calcium powder: 400 mesh, jingxian County Weida New Material Co., ltd;
Aminated diatomaceous earth: self-making;
styrene-acrylic emulsion: ACRONAL S400F AP-type, basf;
VAE emulsion: CELVOLIT 1350 model 1350, soranis;
alcohol ester twelve: kaiyin chemical Co., ltd;
silane coupling agent KH-560: shandong Yuan jin New Material Co.
Example 1
The gap filler based on the gold tailings comprises the following components in parts by weight:
18 parts of cement, 15 parts of gold tailing powder@carbon, 15 parts of heavy calcium powder, 10 parts of aminated diatomite, 60 parts of styrene-acrylic emulsion, 35 parts of VAE emulsion, 5 parts of alcohol ester twelve and 1 part of silane coupling agent KH-560.
The preparation method of the gold tailing powder@carbon comprises the following steps:
In this example, the gold tailings were obtained from the company limited of the mining industry, hunan Xinrui, china gold group, and the compositions are shown in Table 1 below:
table 1: chemical composition (mass fraction)/%;
；
crushing gold tailings until the particle size is less than or equal to 5 mu m, adding 100g into 5000ml of absolute ethyl alcohol, stirring for 10min, performing ultrasonic treatment for 30min, adding 250g of glucose aqueous solution with the mass concentration of 10%, stirring for 2h, heating to completely evaporate the solvent, putting the rest solid into a drying oven, drying at 70 ℃ for 10h to obtain mixed powder, heating the mixed powder to 300 ℃ at the speed of 5 ℃/min under the protection of argon, calcining for 2h, and cooling to room temperature along with a furnace.
The preparation process of the aminated diatomite comprises the following steps:
Adding 100g of diatomite into 500ml of sodium hydroxide solution with the mass concentration of 5%, stirring for 1h to activate, filtering, washing with water, then placing into a baking oven for drying at 70 ℃ for 10h, adding into 2000ml of ethanol, performing ultrasonic dispersion for 30min to obtain a suspension, adding 128g of diethylenetriamine into the suspension, stirring for 15h in a water bath at 50 ℃, filtering out solid, fully washing with ethanol and water, and placing into the baking oven for drying at 70 ℃ for 10h to obtain the product.
The preparation method of the gap filler based on gold tailings comprises the following steps:
Mixing styrene-acrylic emulsion and VAE emulsion in advance, stirring for 10min, adding alcohol ester twelve and silane coupling agent KH-560, stirring for 10min to obtain liquid component, mixing cement, gold tailing powder @ carbon, heavy calcium powder and aminated diatomite uniformly to obtain solid component, and finally mixing and stirring the liquid component and the solid component for 20 min.
The prepared cement mortar test block is used as a bonding base material, two cement mortar base materials are placed on a test platform, isolation cushion blocks are placed at two ends of the cement mortar base materials, the sealant prepared in the embodiment is respectively and slowly injected into a cavity formed by the cement mortar base materials and the isolation cushion blocks by adopting an extruder, standard test conditions are maintained for 28d to obtain a test piece, a HS-3001B type electronic tensile tester is adopted to carry out a tensile test on the test piece, the test piece is placed in a tensile clamp, the test piece is stretched to be damaged by adopting a stretching speed of 5mm/min, a test piece damage process is shot, a test piece damage form is recorded, corresponding load displacement data in the stretching process is automatically recorded by a test equipment information acquisition terminal, each group of tests is repeated for 3 times, the result is calculated to obtain an average value, and the tensile strength of the test piece is 3.72MPa, and the tensile breaking elongation is 385%.
Example 2
The gap filler based on the gold tailings comprises the following components in parts by weight:
20 parts of cement, 10 parts of gold tailing powder@carbon, 10 parts of heavy calcium powder, 10 parts of aminated diatomite, 55 parts of styrene-acrylic emulsion, 40 parts of VAE emulsion, 5 parts of alcohol ester twelve and 1 part of silane coupling agent KH-560.
The preparation method of the gold tailing powder@carbon and the aminated diatomite is the same as that of the example 1;
The preparation process of the gap filler based on gold tailings comprises the following steps:
Mixing styrene-acrylic emulsion and VAE emulsion in advance, stirring for 10min, adding alcohol ester twelve and silane coupling agent KH-560, stirring for 10min to obtain liquid component, mixing cement, gold tailing powder @ carbon, heavy calcium powder and aminated diatomite uniformly to obtain solid component, and finally mixing and stirring the liquid component and the solid component for 20 min.
Example 3
The gap filler based on the gold tailings comprises the following components in parts by weight:
18 parts of cement, 15 parts of gold tailing powder@carbon, 15 parts of heavy calcium powder, 10 parts of aminated diatomite, 60 parts of styrene-acrylic emulsion, 35 parts of VAE emulsion, 5 parts of alcohol ester twelve and 1 part of silane coupling agent KH-560.
The preparation method of the gold tailing powder @ carbon and the aminated diatomite is the same as that of the embodiment 1, wherein the difference is that the gold tailing is from Liaoning gold and phoenix gold mining Co., ltd, and the composition is shown in the following table 2:
Table 2: chemical composition (mass fraction)/%;
；
The preparation process of the gap filler based on gold tailings comprises the following steps:
Mixing styrene-acrylic emulsion and VAE emulsion in advance, stirring for 10min, adding alcohol ester twelve and silane coupling agent KH-560, stirring for 10min to obtain liquid component, mixing cement, gold tailing powder @ carbon, heavy calcium powder and aminated diatomite uniformly to obtain solid component, and finally mixing and stirring the liquid component and the solid component for 20 min.
Example 4
The gap filler based on the gold tailings comprises the following components in parts by weight:
18 parts of cement, 15 parts of gold tailing powder@carbon, 15 parts of heavy calcium powder, 10 parts of aminated diatomite, 60 parts of styrene-acrylic emulsion, 35 parts of VAE emulsion, 5 parts of alcohol ester twelve and 1 part of silane coupling agent KH-560.
The preparation method of the gold tailing powder @ carbon and the aminated diatomite is the same as that of the embodiment 1, wherein the difference is that the gold tailing is from gold mining company limited of gold, south-west, and the composition is shown in the following table 3:
table 3: chemical composition (mass fraction)/%;
；
The preparation process of the gap filler based on gold tailings comprises the following steps:
Mixing styrene-acrylic emulsion and VAE emulsion in advance, stirring for 10min, adding alcohol ester twelve and silane coupling agent KH-560, stirring for 10min to obtain liquid component, mixing cement, gold tailing powder @ carbon, heavy calcium powder and aminated diatomite uniformly to obtain solid component, and finally mixing and stirring the liquid component and the solid component for 20 min.
Comparative example 1:
Substantially the same as in example 1, except that the gold tailings were directly crushed to a particle size of 5 μm or less and added without carbon coating.
Comparative example 2:
Substantially the same as in example 1, except that no gold tailing powder @ carbon was added.
Comparative example 3:
substantially the same as in example 1, except that the aminated diatomaceous earth was not added.
Comparative example 4:
substantially the same as in example 1, except that diatomaceous earth was directly added after activation with a sodium hydroxide solution without being subjected to amination treatment.
And (3) performance detection:
the anti-formaldehyde performance of the joint compound prepared in the examples 1-4 and the comparative examples 1-4 is detected by referring to JC/T1074-2008 purification performance of coating materials with indoor air purification function;
Detection conditions: temperature (20+ -2) deg.C, relative humidity (50+ -10)%, cube test chamber: 1m 3, 50W fluorescent lamps, a 10W air fan, taking 8 identical test boxes to be respectively numbered, respectively introducing 10mg/m 3 formaldehyde, respectively coating a gap filler on a glass plate, naturally drying for 7 days at normal temperature, and then placing the glass plate into the test boxes for experiment for 24 hours.
The test results are shown in table 4 below:
Table 4:
；
As can be seen from the above Table 4, the caulking agent prepared by the present invention has excellent formaldehyde resistance, and the introduction of the carbon coating layer and the aminated diatomite plays a positive role in improving the formaldehyde resistance of the caulking agent.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. The gap filler based on the gold tailings is characterized by comprising the following components in parts by weight:
10-20 parts of cement, 10-20 parts of gold tailing powder @ carbon, 10-20 parts of heavy calcium powder, 10-20 parts of aminated diatomite, 50-70 parts of styrene-acrylic emulsion, 30-40 parts of VAE emulsion, 3-6 parts of film forming auxiliary agent and 0.5-1 part of silane coupling agent;
the preparation method of the gold tailing powder@carbon comprises the following steps:
Crushing gold tailings, adding the crushed gold tailings into absolute ethyl alcohol, adding glucose aqueous solution after ultrasonic treatment, stirring for more than 1h, heating to remove a solvent, drying to obtain mixed powder, and finally calcining the mixed powder under the protection of inert gas;
The grain diameter of the crushed gold tailings is less than or equal to 5 mu m;
The mass fraction of ferric oxide in the gold tailings is more than or equal to 8%;
The calcination temperature is 280-300 ℃ and the calcination time is 1-3h;
The preparation method of the aminated diatomite comprises the following steps:
Activating diatomite with sodium hydroxide solution, washing, drying, adding into ethanol, performing ultrasonic dispersion to obtain suspension, adding diethylenetriamine into the suspension, stirring in water bath at 40-60 ℃ for 10-20h, filtering out solid, washing, and drying.
2. The gold tailing-based caulking agent according to claim 1, wherein the film forming aid is any one or a combination of alcohol ester twelve, diethylene glycol butyl ether, dipropylene glycol methyl ether, ethylene glycol monobutyl ether, propylene glycol methyl ether acetate and propylene glycol monomethyl ether.
3. The gold tailing-based caulking agent according to claim 1, wherein the silane coupling agent is any one or a combination of more of KH-550, KH-560, KH-570.
4. A process for preparing a joint compound based on gold tailings according to any one of claims 1 to 3, wherein the styrene-acrylic emulsion and the VAE emulsion are pre-mixed, then the film forming auxiliary agent and the silane coupling agent are added and mixed uniformly to obtain a liquid component, cement, gold tailings powder @ carbon, heavy calcium powder and aminated diatomite are mixed uniformly to obtain a solid component, and finally the liquid component and the solid component are mixed uniformly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410555017.7A CN118125779B (en) | 2024-05-07 | Gap filler based on gold tailings and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410555017.7A CN118125779B (en) | 2024-05-07 | Gap filler based on gold tailings and preparation process thereof |
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| CN118125779A true CN118125779A (en) | 2024-06-04 |
| CN118125779B CN118125779B (en) | 2024-07-02 |
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