CN112142356A - Biodegradable cement grinding aid and preparation method thereof - Google Patents
Biodegradable cement grinding aid and preparation method thereof Download PDFInfo
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- CN112142356A CN112142356A CN202010951793.0A CN202010951793A CN112142356A CN 112142356 A CN112142356 A CN 112142356A CN 202010951793 A CN202010951793 A CN 202010951793A CN 112142356 A CN112142356 A CN 112142356A
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- 238000000227 grinding Methods 0.000 title claims abstract description 76
- 239000004568 cement Substances 0.000 title claims abstract description 60
- 238000002360 preparation method Methods 0.000 title claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000008367 deionised water Substances 0.000 claims abstract description 24
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 24
- 239000002351 wastewater Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000004094 surface-active agent Substances 0.000 claims abstract description 18
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims abstract description 13
- 229930006000 Sucrose Natural products 0.000 claims abstract description 13
- 229960004793 sucrose Drugs 0.000 claims abstract description 13
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims abstract description 10
- 239000001632 sodium acetate Substances 0.000 claims abstract description 10
- 235000017281 sodium acetate Nutrition 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims description 34
- 239000000203 mixture Substances 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 12
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 11
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 9
- 239000005720 sucrose Substances 0.000 claims description 9
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Natural products CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 7
- BBMCTIGTTCKYKF-UHFFFAOYSA-N 1-heptanol Chemical compound CCCCCCCO BBMCTIGTTCKYKF-UHFFFAOYSA-N 0.000 claims description 6
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 6
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 5
- 229930195729 fatty acid Natural products 0.000 claims description 5
- 239000000194 fatty acid Substances 0.000 claims description 5
- 150000004665 fatty acids Chemical class 0.000 claims description 5
- 150000002191 fatty alcohols Chemical class 0.000 claims description 4
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 claims description 4
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 3
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 3
- BWDBEAQIHAEVLV-UHFFFAOYSA-N 6-methylheptan-1-ol Chemical compound CC(C)CCCCCO BWDBEAQIHAEVLV-UHFFFAOYSA-N 0.000 claims description 3
- PLLBRTOLHQQAQQ-UHFFFAOYSA-N 8-methylnonan-1-ol Chemical compound CC(C)CCCCCCCO PLLBRTOLHQQAQQ-UHFFFAOYSA-N 0.000 claims description 3
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 3
- DPUOLQHDNGRHBS-UHFFFAOYSA-N Brassidinsaeure Natural products CCCCCCCCC=CCCCCCCCCCCCC(O)=O DPUOLQHDNGRHBS-UHFFFAOYSA-N 0.000 claims description 3
- URXZXNYJPAJJOQ-UHFFFAOYSA-N Erucic acid Natural products CCCCCCC=CCCCCCCCCCCCC(O)=O URXZXNYJPAJJOQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000005642 Oleic acid Substances 0.000 claims description 3
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 3
- DTOSIQBPPRVQHS-PDBXOOCHSA-N alpha-linolenic acid Chemical compound CC\C=C/C\C=C/C\C=C/CCCCCCCC(O)=O DTOSIQBPPRVQHS-PDBXOOCHSA-N 0.000 claims description 3
- 235000020661 alpha-linolenic acid Nutrition 0.000 claims description 3
- DPUOLQHDNGRHBS-KTKRTIGZSA-N erucic acid Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(O)=O DPUOLQHDNGRHBS-KTKRTIGZSA-N 0.000 claims description 3
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 3
- 229960004488 linolenic acid Drugs 0.000 claims description 3
- KQQKGWQCNNTQJW-UHFFFAOYSA-N linolenic acid Natural products CC=CCCC=CCC=CCCCCCCCC(O)=O KQQKGWQCNNTQJW-UHFFFAOYSA-N 0.000 claims description 3
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 3
- 235000021313 oleic acid Nutrition 0.000 claims description 3
- OYHQOLUKZRVURQ-NTGFUMLPSA-N (9Z,12Z)-9,10,12,13-tetratritiooctadeca-9,12-dienoic acid Chemical compound C(CCCCCCC\C(=C(/C\C(=C(/CCCCC)\[3H])\[3H])\[3H])\[3H])(=O)O OYHQOLUKZRVURQ-NTGFUMLPSA-N 0.000 claims description 2
- 235000021314 Palmitic acid Nutrition 0.000 claims description 2
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 claims description 2
- 239000003002 pH adjusting agent Substances 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 15
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 9
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 238000005265 energy consumption Methods 0.000 description 7
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 231100000209 biodegradability test Toxicity 0.000 description 2
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 2
- -1 dodecyl dimethyl tertiary amine Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 239000004440 Isodecyl alcohol Substances 0.000 description 1
- OYHQOLUKZRVURQ-HZJYTTRNSA-N Linoleic acid Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC(O)=O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- WLCFKPHMRNPAFZ-UHFFFAOYSA-M didodecyl(dimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)CCCCCCCCCCCC WLCFKPHMRNPAFZ-UHFFFAOYSA-M 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- DDXLVDQZPFLQMZ-UHFFFAOYSA-M dodecyl(trimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)C DDXLVDQZPFLQMZ-UHFFFAOYSA-M 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 235000020778 linoleic acid Nutrition 0.000 description 1
- OYHQOLUKZRVURQ-IXWMQOLASA-N linoleic acid Natural products CCCCC\C=C/C\C=C\CCCCCCCC(O)=O OYHQOLUKZRVURQ-IXWMQOLASA-N 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 235000013379 molasses Nutrition 0.000 description 1
- UWHRNIXHZAWBMF-UHFFFAOYSA-N n-dodecyl-n-methyldodecan-1-amine Chemical compound CCCCCCCCCCCCN(C)CCCCCCCCCCCC UWHRNIXHZAWBMF-UHFFFAOYSA-N 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- VGTPCRGMBIAPIM-UHFFFAOYSA-M sodium thiocyanate Chemical compound [Na+].[S-]C#N VGTPCRGMBIAPIM-UHFFFAOYSA-M 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/08—Fats; Fatty oils; Ester type waxes; Higher fatty acids, i.e. having at least seven carbon atoms in an unbroken chain bound to a carboxyl group; Oxidised oils or fats
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/10—Carbohydrates or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/52—Grinding aids; Additives added during grinding
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The biodegradable cement grinding aid comprises the following components: 3-5 parts of cane sugar, 30-50 parts of papermaking wastewater, 20-40 parts of sodium acetate, 3-10 parts of biodegradable surfactant and 15-30 parts of deionized water. The biodegradable cement grinding aid can effectively ensure the smooth operation of a grinding process, inhibit the phenomena of caking, blockage and the like in the grinding process, and has smaller material particle size and larger specific surface area after grinding. In addition, the biodegradable cement grinding aid provided by the invention is beneficial to the improvement of the compressive strength and the flexural strength of cement. The cement grinding aid prepared from non-biodegradable raw materials such as triethanolamine, ethylene glycol and the like is not easy to degrade and can remain in cement products, thereby causing environmental pollution.
Description
Technical Field
The invention relates to an additive in the cement production process, in particular to a biodegradable cement grinding aid and a preparation method thereof.
Background
China is a large country for cement production, cement is a very basic material in the building industry, plays a very important role in national economic development, and has wide application in national defense engineering, bridge road engineering, civil houses, commercial house building engineering and the like. The cement production industry consumes considerable energy, which accounts for about one third of the total energy consumption of the building material industry, and the main process of the cement production comprises three processes: grinding of raw materials, firing of clinker and grinding of cement clinker. In the process, the grinding energy consumption is highest, the energy loss rate in the grinding process is very high, the utilization rate is quite low, the energy consumed in the clinker grinding process accounts for at least half of the total energy, only a small part of energy acts on increasing the grinding of materials, and most of other materials are wasted. The reason is that the fineness of the materials is continuously increased in the grinding process, and if the cement reaches enough fineness and cannot be timely discharged out of the mill, a buffer cushion layer phenomenon can be generated to a certain extent, so that the materials in the mill are impacted, collided and ground again, and more energy is consumed; in addition, the adhesion and interfacial tension of the powder also increase with increasing fineness, which results in the healing of the cracks formed in the particles and increases the energy consumption for regrinding. All in all, the above will have a serious influence on the grinding efficiency of the grinding equipment and result in a great reduction in the utilization rate of energy. In cement production, because energy consumption and grinding efficiency are main factors restricting the development of the cement, improving the grinding efficiency and reducing the energy consumption become the first tasks which are urgently needed to be solved by the cement industry.
In order to improve the grinding efficiency, reduce the energy consumption and save the energy, at present, domestic cement enterprises generally adopt two measures, namely, the grinding mode and the grinding operation process flow are improved through the improvement of the mechanical structure of a grinding system, and the purpose of saving energy is achieved; the other measure is to add a small amount of grinding aid into the ground material to achieve the purpose. The first measure can improve the grinding efficiency and reduce the energy consumption to a certain extent, but generally needs to increase mechanical equipment, so that the investment cost of cement production is greatly increased; and the second measure has simple operation, less investment and quick effect and can well improve the performance of the cement. Based on the advantages of the second measure, cement manufacturing enterprises pay more and more attention to the effect of the grinding aid, and the grinding aid is widely researched, distributed, popularized and applied at home and abroad.
The invention patent with application number 201910174358.9 discloses a cement grinding aid which is prepared by the following raw materials through a synthesis reaction: dodecyl dimethyl tertiary amine, didodecyl methylamine, isopropanol, chloromethane, alkali and a proper amount of deionized water; the products of the synthesis reaction are: dodecyl trimethyl ammonium chloride, didodecyl dimethyl ammonium chloride and water. The invention patent with application number 201911265321.3 discloses a cement grinding aid which is prepared from the following raw materials in parts by weight: 10-20 parts of sucrose, 13-26 parts of glycerol, 3-8 parts of molasses, 2-5 parts of a dispersing agent, 15-25 parts of sodium thiocyanate, 5-15 parts of alkylphenol polyoxyethylene, 5-15 parts of industrial salt and 50-100 parts of water.
Most of grinding aids reported at present and used in the market are relatively high in price, the grinding aids are subjected to high-temperature and high-pressure treatment in the production process, the process is complex, the fluctuation of the quality and performance of products is large, the grinding aids and organic components such as triethanolamine and low-molecular polyol are contained, and the grinding aids and the organic components are still remained in cement after the cement is solidified and are slowly released, so that air is polluted. These adverse factors all affect the spread of the grinding aid. Therefore, the biodegradable cement grinding aid needs to be developed, is harmless to human bodies, is convenient to use, has a low price, has a remarkable grinding-aid effect, improves the cement performance, and does not influence the concrete construction performance.
Disclosure of Invention
The technical problem to be solved is as follows: the invention overcomes the defects in the prior art and provides a biodegradable cement grinding aid and a preparation method thereof.
The technical scheme is as follows: a biodegradable cement grinding aid is composed of the following substances: 3-5 parts of cane sugar, 30-50 parts of papermaking wastewater, 20-40 parts of sodium acetate, 3-10 parts of biodegradable surfactant and 15-30 parts of deionized water.
The pH value of the papermaking wastewater is adjusted to 7.0-7.5 by adopting a pH value adjusting agent.
The pH regulator is acetic acid or ammonia water.
The preparation method of the biodegradable cement grinding aid comprises the following steps: (a) preparation of biodegradable surfactant: adding 100 parts of fatty acid and 10-30 parts of maleic anhydride into a reaction kettle, and heating to 100-110 ℃; keeping the reaction temperature, adding 0.5-2 parts of dibenzoyl peroxide, and reacting for 2-4 hours; then adding 5-20 parts of long-chain fatty alcohol, and keeping the temperature at 80-85 ℃ for 2-5 hours; cooling to 30-40 ℃, adding ammonia water to adjust the pH value to 7.0-7.5, and finally adding deionized water to obtain the biodegradable surfactant with the solid content of 40%; (b) taking papermaking wastewater with the formula amount, measuring the pH value, and adding a pH value regulator until the pH value is 7.0-7.5; (c) adding sucrose and biodegradable surfactant into deionized water, and stirring at 40-50 deg.C; (d) adding sodium acetate into deionized water, stirring uniformly at 40-50 ℃, adding papermaking wastewater, and continuing to stir uniformly; (e) and (d) adding the mixture obtained in the step (d) into the mixture obtained in the step (c) while stirring, and uniformly stirring to obtain the biodegradable cement grinding aid.
The fatty acid is erucic acid, oleic acid, linoleic acid, palmitic acid or linolenic acid.
The long-chain fatty alcohol is heptanol, isooctanol, isodecanol or dodecanol.
Has the advantages that: 1. the biodegradable cement grinding aid disclosed by the invention has no toxic or side effect and meets the relevant national and industrial standards;
2. the biodegradable cement grinding aid disclosed by the invention adopts biodegradable organic substances such as sucrose and the like to replace non-biodegradable substances such as triethanolamine and the like, on one hand, the substances have biodegradable performance, and after the cement is solidified, the cement can be decomposed into carbon dioxide and water under the action of microorganisms, so that the air cannot be polluted; on the other hand, the substances have strong dispersion effect in the grinding process, so that the electric charges generated in the powder grinding process can be effectively reduced, and the caking phenomenon between the materials and grinding equipment in the grinding process is inhibited, thereby improving the grinding aid efficiency; 3. the biodegradable cement grinding aid disclosed by the invention adopts the biodegradable surfactant synthesized on the basis of fatty acid, can prevent cement particles from coalescing, reduces the free energy on the surfaces of the particles, has a synergistic grinding-aiding effect with sucrose and the like, and further improves the grinding efficiency; on the other hand, the decomposition speed of organic matters such as cane sugar and the like can be increased, and the pollution to air is further reduced; 4. the biodegradable cement grinding aid provided by the invention adopts papermaking wastewater, the papermaking wastewater contains a large amount of lignin, hemicellulose, saccharides and other dissolved matters (residual alkali, inorganic salt, volatile acid, ammonia nitrogen and the like), the substances have biodegradability on one hand, and the substances can play a grinding aid effect when being added into the grinding aid on the other hand, so that the treatment problem of the papermaking wastewater is effectively solved, the wastes are fully utilized, the wastes are changed into valuables, and the production cost is reduced.
Detailed Description
The following is illustrative of the invention and is not intended to be limiting thereof. In order to better explain the present invention, the invention is explained and illustrated by the following detailed description.
Example 1
(a) Adding 100 parts of erucic acid and 10 parts of maleic anhydride into a reaction kettle, and heating to 100 ℃; keeping the reaction temperature, adding 0.5 part of dibenzoyl peroxide, and reacting for 4 hours; then 5 parts of heptanol are added, and the temperature is 80 ℃ for 5 hours; cooling to 30 ℃, adding ammonia water to adjust the pH value to 7.0, and finally adding deionized water to obtain the biodegradable surfactant with the solid content of 40%.
(b) Measuring the pH value of the papermaking wastewater, and adding ammonia water until the pH value is 7;
(c) adding 3 parts of sucrose and 3 parts of the biodegradable surfactant obtained in the step (a) into 7 parts of deionized water, and uniformly stirring at 40 ℃;
(d) adding 24 parts of sodium acetate into 8 parts of deionized water, stirring uniformly at 40 ℃, adding 50 parts of papermaking wastewater obtained in the step (b), and continuously stirring uniformly;
(e) and (d) adding the mixture obtained in the step (d) into the mixture obtained in the step (c) while stirring, and uniformly stirring to obtain the biodegradable cement grinding aid BS-1.
Example 2
(a) Adding 100 parts of oleic acid and 15 parts of maleic anhydride into a reaction kettle, and heating to 105 ℃; keeping the reaction temperature, adding 1.0 part of dibenzoyl peroxide, and reacting for 3.5 hours; then 10 parts of isooctanol are added, and the time is 4 hours under the condition that the temperature is 82 ℃; cooling to 35 ℃, adding acetic acid to adjust the pH value to 7.2, and finally adding deionized water to obtain the biodegradable surfactant with the solid content of 40%.
(b) Measuring the pH value of the papermaking wastewater, and adding ammonia water until the pH value is 7.2;
(c) adding 4 parts of sucrose and 5 parts of the biodegradable surfactant obtained in the step (a) into 10 parts of deionized water, and uniformly stirring at 40 ℃;
(d) adding 20 parts of sodium acetate into 10 parts of deionized water, stirring uniformly at 40 ℃, adding 41 parts of papermaking wastewater obtained in the step (b), and continuously stirring uniformly;
(e) and (d) adding the mixture obtained in the step (d) into the mixture obtained in the step (c) while stirring, and uniformly stirring to obtain the biodegradable cement grinding aid BS-2.
Example 3
(a) Adding 100 parts of linoleic acid and 20 parts of maleic anhydride into a reaction kettle, and heating to 108 ℃; keeping the reaction temperature, adding 1.5 parts of dibenzoyl peroxide, and reacting for 3 hours; then 5 parts of isodecyl alcohol are added, and the time is 3.5 hours under the condition that the temperature is 84 ℃; cooling to 40 ℃, adding ammonia water to adjust the pH value to 7.5, and finally adding deionized water to obtain the biodegradable surfactant with the solid content of 40%.
(b) Measuring the pH value of the papermaking wastewater, and adding ammonia water until the pH value is 7.5;
(c) adding 4 parts of sucrose and 4 parts of the biodegradable surfactant obtained in the step (a) into 15 parts of deionized water, and uniformly stirring at 40 ℃;
(d) adding 24 parts of sodium acetate into 10 parts of deionized water, stirring uniformly at 40 ℃, adding 32 parts of papermaking wastewater obtained in the step (b), and continuously stirring uniformly;
(e) and (d) adding the mixture obtained in the step (d) into the mixture obtained in the step (c) while stirring, and uniformly stirring to obtain the biodegradable cement grinding aid BS-3.
Example 4
(a) Adding 100 parts of linolenic acid and 30 parts of maleic anhydride into a reaction kettle, and heating to 110 ℃; keeping the reaction temperature, adding 2.0 parts of dibenzoyl peroxide, and reacting for 2 hours; then 20 parts of dodecanol is added, and the time is 2 hours under the condition that the temperature is 85 ℃; cooling to 30 ℃, adding ammonia water to adjust the pH value to 7.0, and finally adding deionized water to obtain the biodegradable surfactant with the solid content of 40%.
(b) Measuring the pH value of the papermaking wastewater, and adding ammonia water until the pH value is 7.0;
(c) adding 5 parts of sucrose and 10 parts of the biodegradable surfactant obtained in the step (a) into 15 parts of deionized water, and uniformly stirring at 40 ℃;
(d) adding 20 parts of sodium acetate into 5 parts of deionized water, stirring uniformly at 40 ℃, adding 30 parts of papermaking wastewater obtained in the step (b), and continuously stirring uniformly;
(e) and (d) adding the mixture obtained in the step (d) into the mixture obtained in the step (c) while stirring, and uniformly stirring to obtain the biodegradable cement grinding aid BS-4.
Comparative example 1
(a) Adding 3 parts of triethanolamine, 15 parts of ethylene glycol and OP-102 parts into 7 parts of deionized water, and uniformly stirring at 40 ℃;
(b) adding 40 parts of sodium acetate into 33 parts of deionized water, and uniformly stirring;
(c) and (c) adding the mixture obtained in the step (b) into the mixture obtained in the step (a) while stirring, and uniformly stirring to obtain the cement grinding aid DS-1.
When the grinding aid is added during cement grinding, the influence of the grinding aid on the cement performance is as follows.
As can be seen from the table above, the biodegradable cement grinding aid can effectively ensure the smooth operation of the grinding process, inhibit the phenomena of agglomeration, blockage and the like in the grinding process, and ensure that the ground material has smaller particle size and larger specific surface area. In addition, the biodegradable cement grinding aid provided by the invention is beneficial to the improvement of the compressive strength and the flexural strength of cement.
Biodegradability test method:
respectively dissolving a certain amount of grinding aid in water to prepare solutions with mass concentrations of 200mg/L, respectively measuring the Biological Oxygen Demand (BOD) and the Chemical Oxygen Demand (COD), and investigating the biodegradability according to the ratio of the BOD to the COD. The biodegradable BOD/COD > 0.45 is considered to have better biodegradability, and the BOD/COD < 0.2 is not easy to biodegrade.
The results of the biodegradability test are as follows:
| grinding aid | BOD/(mg·L-1) | COD/(mg·L-1) | BOD/COD | Biodegradability |
| BS-1 | 371 | 389 | 0.954 | Is easy to degrade |
| BS-2 | 376 | 405 | 0.928 | Is easy to degrade |
| BS-3 | 373 | 427 | 0.874 | Is easy to degrade |
| BS-4 | 386 | 439 | 0.879 | Is easy to degrade |
| DS-1 | 10 | 403 | 0.025 | Is not easy to degrade |
As can be seen from the above table, the biodegradable cement grinding aid of the invention is easy to biodegrade, while the cement grinding aid prepared by non-biodegradable raw materials such as triethanolamine, ethylene glycol and the like is not easy to degrade and can remain in cement products, thereby causing environmental pollution.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (6)
1. A biodegradable cement grinding aid is characterized by consisting of the following substances: 3-5 parts of cane sugar, 30-50 parts of papermaking wastewater, 20-40 parts of sodium acetate, 3-10 parts of biodegradable surfactant and 15-30 parts of deionized water.
2. The biodegradable cement grinding aid as claimed in claim 1, wherein the papermaking waste water is adjusted to pH =7.0-7.5 by using pH value adjusting agent.
3. The biodegradable cement grinding aid as claimed in claim 2, wherein the pH adjusting agent is acetic acid or ammonia water.
4. A method for preparing a biodegradable cement grinding aid as claimed in any one of claims 1 to 3, characterized by comprising the steps of: (a) preparation of biodegradable surfactant: adding 100 parts of fatty acid and 10-30 parts of maleic anhydride into a reaction kettle, and heating to 100-110 ℃; keeping the reaction temperature, adding 0.5-2 parts of dibenzoyl peroxide, and reacting for 2-4 hours; then adding 5-20 parts of long-chain fatty alcohol, and keeping the temperature at 80-85 ℃ for 2-5 hours; cooling to 30-40 ℃, adding ammonia water to adjust the pH value to 7.0-7.5, and finally adding deionized water to obtain the biodegradable surfactant with the solid content of 40%; (b) taking papermaking wastewater with a formula amount, measuring the pH value, and adding a pH value regulator until the pH value is = 7.0-7.5; (c) adding sucrose and biodegradable surfactant into deionized water, and stirring at 40-50 deg.C; (d) adding sodium acetate into deionized water, stirring uniformly at 40-50 ℃, adding papermaking wastewater, and continuing to stir uniformly; (e) and (d) adding the mixture obtained in the step (d) into the mixture obtained in the step (c) while stirring, and uniformly stirring to obtain the biodegradable cement grinding aid.
5. The method for preparing the biodegradable cement grinding aid as claimed in claim 4, wherein the fatty acid is erucic acid, oleic acid, linoleic acid, palmitic acid or linolenic acid.
6. The method for preparing a biodegradable cement grinding aid as claimed in claim 4, wherein the long-chain fatty alcohol is heptanol, isooctanol, isodecanol or dodecanol.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105503017A (en) * | 2015-12-17 | 2016-04-20 | 青岛宏宇环保空调设备有限公司 | Cement grinding aid |
| CN106277894A (en) * | 2016-09-05 | 2017-01-04 | 陈小华 | A kind of environmental protection early-strength graphene oxide cement grinding aid and preparation method thereof |
-
2020
- 2020-09-11 CN CN202010951793.0A patent/CN112142356A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105503017A (en) * | 2015-12-17 | 2016-04-20 | 青岛宏宇环保空调设备有限公司 | Cement grinding aid |
| CN106277894A (en) * | 2016-09-05 | 2017-01-04 | 陈小华 | A kind of environmental protection early-strength graphene oxide cement grinding aid and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 卢经扬等: "《建筑材料》", 31 July 2012, 西安电子科技大学出版社 * |
| 张壬午等: "《农业生态工程技术》", 31 October 2000, 河南科学技术出版社 * |
| 王仲旭等: "《污水治理技术与运行管理》", 31 January 2015, 中国环境出版社 * |
| 罗朝阳等: "新型可生物降解含氟聚合物表面活性剂的合成及性能研究", 《皮革与化工》 * |
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