CN114804690A - Slag mineral powder grinding aid and grinding method of slag mineral powder - Google Patents
Slag mineral powder grinding aid and grinding method of slag mineral powder Download PDFInfo
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- CN114804690A CN114804690A CN202210431271.7A CN202210431271A CN114804690A CN 114804690 A CN114804690 A CN 114804690A CN 202210431271 A CN202210431271 A CN 202210431271A CN 114804690 A CN114804690 A CN 114804690A
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- 238000000227 grinding Methods 0.000 title claims abstract description 251
- 239000000843 powder Substances 0.000 title claims abstract description 137
- 239000002893 slag Substances 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims abstract description 107
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 76
- 239000011707 mineral Substances 0.000 title claims abstract description 76
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 84
- 239000002994 raw material Substances 0.000 claims abstract description 56
- 239000002775 capsule Substances 0.000 claims abstract description 46
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 31
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000011248 coating agent Substances 0.000 claims abstract description 24
- 238000000576 coating method Methods 0.000 claims abstract description 24
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 claims abstract description 20
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 11
- 239000011162 core material Substances 0.000 claims abstract description 11
- 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 abstract description 8
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000008103 glucose Substances 0.000 claims abstract description 8
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims abstract description 8
- 239000011976 maleic acid Substances 0.000 claims abstract description 8
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000005695 Ammonium acetate Substances 0.000 claims abstract description 6
- 235000019257 ammonium acetate Nutrition 0.000 claims abstract description 6
- 229940043376 ammonium acetate Drugs 0.000 claims abstract description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 67
- 239000002131 composite material Substances 0.000 claims description 35
- 239000000243 solution Substances 0.000 claims description 35
- 239000012752 auxiliary agent Substances 0.000 claims description 34
- 238000010438 heat treatment Methods 0.000 claims description 33
- 150000002314 glycerols Chemical class 0.000 claims description 29
- SLINHMUFWFWBMU-UHFFFAOYSA-N Triisopropanolamine Chemical compound CC(O)CN(CC(C)O)CC(C)O SLINHMUFWFWBMU-UHFFFAOYSA-N 0.000 claims description 20
- 239000011259 mixed solution Substances 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 235000013379 molasses Nutrition 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 10
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 8
- 235000019253 formic acid Nutrition 0.000 claims description 8
- 239000003054 catalyst Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 29
- 239000004566 building material Substances 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 description 92
- 230000000052 comparative effect Effects 0.000 description 37
- 239000002245 particle Substances 0.000 description 35
- 235000011187 glycerol Nutrition 0.000 description 21
- 239000004567 concrete Substances 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 16
- 239000000654 additive Substances 0.000 description 11
- 230000000996 additive effect Effects 0.000 description 11
- 238000005299 abrasion Methods 0.000 description 10
- 150000001875 compounds Chemical class 0.000 description 7
- 230000001050 lubricating effect Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 238000013329 compounding Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000002776 aggregation Effects 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000035876 healing Effects 0.000 description 2
- 239000004574 high-performance concrete Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000009044 synergistic interaction Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000003334 potential effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/06—Selection or use of additives to aid disintegrating
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
- C04B7/42—Active ingredients added before, or during, the burning process
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/48—Clinker treatment
- C04B7/52—Grinding ; After-treatment of ground cement
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The application relates to the field of building materials, and particularly discloses a slag mineral powder grinding aid and a slag mineral powder grinding method. A slag mineral powder grinding aid comprises a primary grinding agent and a secondary grinding agent in a weight ratio of (2-3) to 1, wherein the primary grinding agent is prepared from the following raw materials in parts by weight based on the weight of the primary grinding agent: 6-10 parts of maleic acid and 3-8 parts of silane coupling agent; based on the weight of the secondary grinding agent, the secondary grinding agent is prepared from the following raw materials in parts by weight: 25-40 parts of wear-resistant capsules, 12-16 parts of water, 15-30 parts of ammonium acetate and 1-2 parts of glucose; the wear-resistant capsule comprises a core material and a coating, wherein the core material is silicon nitride, and the coating is phthalic anhydride. The slag mineral powder grinding aid has the advantage of improving the grinding effect of the slag mineral powder.
Description
Technical Field
The application relates to the field of building materials, in particular to a slag mineral powder grinding aid and a slag mineral powder grinding method.
Background
The slag is a polymer of a crystalline phase and a glass phase, has high potential activity, and has become a preferred material for producing high-quality cement and high-performance concrete as a novel green and environment-friendly material. The mineral powder is a product obtained by crushing and processing the mineral, is also a high-quality concrete admixture and cement admixture, and is an important material for preparing high-performance concrete acknowledged in the world at present. The addition of the mineral powder can effectively improve the compressive strength of the concrete, improve the compactness of the concrete and improve the anti-seepage and anti-erosion capabilities, and has obvious effects.
Before adding the slag mineral powder into concrete, grinding treatment is required; the grinding process is an operation with high energy consumption, and particularly, the mineral powder contains crushed ore powder, the surface of the ore powder is rough and has multiple edges and corners, and the ore powder has embedding effect with each other, so that the energy consumption is higher when fine grinding and superfine grinding are carried out. The grinding effect is to be improved, and the grinding effect of the slag mineral powder can directly influence the working performance of the concrete.
Disclosure of Invention
In order to improve the grinding effect of the slag mineral powder, the application provides a slag mineral powder grinding aid and a slag mineral powder grinding method.
In a first aspect, the application provides a slag mineral powder grinding aid, which adopts the following technical scheme:
a slag mineral powder grinding aid comprises a primary grinding agent and a secondary grinding agent in a weight ratio of (2-3) to 1, wherein the primary grinding agent is prepared from the following raw materials in parts by weight based on the weight of the primary grinding agent: 6-10 parts of maleic acid and 3-8 parts of silane coupling agent;
based on the weight of the secondary grinding agent, the secondary grinding agent is prepared from the following raw materials in parts by weight: 25-40 parts of wear-resistant capsules, 12-16 parts of water, 15-30 parts of ammonium acetate and 1-2 parts of glucose; the wear-resistant capsule comprises a core material and a coating, wherein the core material is silicon nitride, and the coating is phthalic anhydride.
By adopting the technical scheme, fine cracks can be generated in the crushing process of the stone powder in the mineral powder, and the cracking tendency of the cracks can be increased by adopting the weak acidity of the maleic acid in the primary grinding agent, so that the stone powder is more split into finer particles; the silane coupling agent in the primary grinding agent can penetrate into cracks of particles in the slag mineral powder to reduce the possibility of healing of the cracks in the particles, and the silane coupling agent penetrating into the cracks can be hydrolyzed to generate silanol when encountering water in the secondary grinding agent, so that the surface performance of the particles in the slag mineral powder is improved, the possibility of healing of the cracks in the grinding process is further reduced, and the possibility of mutual adsorption and agglomeration among lower particles is also reduced, so that the grinding effect of the slag mineral powder is improved.
The core material of the wear-resistant capsule in the secondary grinding agent is silicon nitride which is high in hardness and wear-resistant, so that the silicon nitride can be used for grinding uneven edges and corners on the surfaces of particles in slag mineral powder, and the possibility that grinding effect is influenced by the embedding effect of the edges and corners among the particles is reduced; and the silicon nitride particles have lubricating property, so that the possibility of embedding between the silicon nitride particles and slag mineral powder particles can be reduced. The coating phthalic anhydride has a lubricating effect, so that the wear-resistant capsules can be fully dispersed in the secondary grinding agent, and the possibility of embedding between the wear-resistant capsule particles and the slag mineral powder particles can be further reduced, thereby improving the grinding effect of the slag mineral powder.
The glucose contains more hydroxyl groups, and the crushed and ground slag mineral powder particles can easily adsorb the glucose, so that the slag mineral powder particles are not easy to agglomerate, the possibility of secondary agglomeration of the ground slag mineral powder particles to increase the particle size of powder again is reduced, and the grinding effect of the slag mineral powder is improved.
Optionally, based on the weight of the wear-resistant capsule, the wear-resistant capsule is prepared from the following raw materials in parts by weight: 50-60 parts of silicon nitride and 40-50 parts of phthalic anhydride.
By adopting the technical scheme, the phthalic anhydride with the lubricating effect is wrapped on the periphery of the silicon nitride to form the wear-resistant capsule, the core material silicon nitride enables the wear-resistant capsule to be hard and wear-resistant, the coating phthalic anhydride enables the wear-resistant capsule to be fully dispersed in the secondary grinding agent, and the possibility of embedding between the wear-resistant capsule and slag mineral powder particles is further reduced.
Optionally, the wear-resistant capsule is prepared by a method comprising the following steps: heating phthalic anhydride to melt to obtain a coating solution, and spraying the coating solution on the spread and dispersed silicon nitride surface to obtain the wear-resistant capsule.
By adopting the technical scheme, the melting point of phthalic anhydride is 131-134 ℃, and the coating liquid can be solidified into a solid when contacting the silicon nitride surface with the temperature lower than the melting point of phthalic anhydride, so that the coating is coated on the outer surface of the silicon nitride to form the wear-resistant capsule.
Optionally, the primary grinding agent further comprises 30-40 parts of a composite auxiliary agent by weight of the primary grinding agent; based on the weight of the composite auxiliary agent, the composite auxiliary agent is prepared from the following raw materials in parts by weight: 30-40 parts of modified glycerol, 20-30 parts of triisopropanolamine and 10-15 parts of sodium dodecyl sulfate, wherein the modified glycerol is obtained by modifying glycerol with triisopropanolamine and formic acid.
By adopting the technical scheme, the modified glycerol obtained by modifying triisopropanolamine and formic acid is matched with triisopropanolamine and sodium dodecyl sulfate to form the composite auxiliary agent, so that the flowability of particles in the slag mineral powder can be effectively improved, the grinding aid effect of the grinding aid is further improved, and the grinding effect of the slag mineral powder is improved.
Optionally, based on the weight of the modified glycerol, the modified glycerol is prepared by a method comprising the following steps:
mixing 15-25 parts of triisopropanolamine and 15-25 parts of formic acid to obtain a basic mixed solution, adding 20-30 parts of glycerol into the basic mixed solution while stirring to obtain a base solution, heating the base solution to 65-70 ℃, then adding a catalyst while stirring to obtain a mixed solution, heating the mixed solution to 85-90 ℃, continuously stirring for 10-15min, and standing for 30-50min to obtain the modified glycerol.
By adopting the technical scheme, the modified glycerol can be obtained.
Optionally, on the basis of the weight of the composite auxiliary agent, the composite auxiliary agent is prepared by a method comprising the following steps: mixing modified glycerol, sodium dodecyl sulfate and triisopropanolamine to obtain a mixed base solution, heating the mixed base solution to 70-80 ℃, then dropwise adding 1-3 parts of 32% sodium hydroxide aqueous solution into the mixed base solution while stirring, continuously heating for 1-1.5h to obtain a basic auxiliary agent, heating the basic auxiliary agent to 85-90 ℃, continuously heating for 2-2.5h, cooling to room temperature, and adjusting the pH value to be neutral to obtain the composite auxiliary agent.
By adopting the technical scheme, the composite auxiliary agent can be obtained.
Optionally, the primary grinding agent further comprises 3-5 parts of molasses and 3-5 parts of glycerol by weight of the primary grinding agent.
By adopting the technical scheme, the molasses is a viscous, black brown and semi-flowing object, and the grinding effect can be effectively improved; the addition of the glycerol can effectively improve the grinding-aiding effect; the compound additive can be compounded with molasses and glycerol to realize synergistic interaction, so that the grinding aid effect of the grinding aid is greatly improved.
In a second aspect, the application provides a method for grinding slag mineral powder, which adopts the following technical scheme:
the grinding method of the slag mineral powder is realized by the slag mineral powder grinding aid, and specifically comprises the following steps:
step S1: mixing slag mineral powder and an initial grinding agent, and then rolling and crushing to obtain crushed materials;
step S2: mixing the crushed materials with a secondary grinding agent, and performing coarse grinding and fine grinding in sequence to obtain base powder;
step S3: and selecting the basic powder, outputting and collecting the qualified powder, and returning the unqualified powder to the coarse grinding step for continuous grinding.
By adopting the technical scheme, the step S1 can further crack particles in the slag mineral powder, so that the maleic acid and the silane coupling agent can act.
Optionally, in the step 2, before the fine grinding operation, 0.5-1 part of ethanol is sprayed on the product after coarse grinding based on the weight of the grinding aid.
By adopting the technical scheme, phthalic anhydride is insoluble in water but soluble in ethanol, and the spraying of the ethanol can dissolve the surface of the wear-resistant capsule before fine grinding, so that silicon nitride particles are directly contacted and rubbed with slag mineral powder particles, and the grinding effect is further improved; and the ethanol volatilizes and absorbs heat, so that the temperature rise caused by heat generated by friction in the grinding process can be relieved, and the possibility that the grinding efficiency is reduced due to aggregation of particles caused by electrostatic attraction due to overhigh temperature in the grinding process is reduced.
In summary, the present application has the following beneficial effects:
1. because the wear-resistant capsule with the silicon nitride as the core material and the phthalic anhydride as the coating is adopted, the silicon nitride has high hardness and wear resistance, and can grind the uneven edges and corners on the surfaces of particles in the slag mineral powder and reduce the possibility that the grinding effect is influenced by the embedding effect of the edges and corners among the particles; the silicon nitride has lubricating property, and the coating phthalic anhydride improves the lubricating effect of the silicon nitride, so that the wear-resistant capsules can be fully dispersed in the secondary grinding agent, the possibility of embedding between the wear-resistant capsule particles and the slag mineral powder particles is reduced, and the grinding effect of the slag mineral powder is improved.
2. The modified glycerol, the sodium dodecyl sulfate and the triisopropanolamine are matched to obtain the composite auxiliary agent, so that the flowability of particles in the slag mineral powder can be effectively improved, and the grinding effect is improved.
3. In the application, the compound additive is compounded with the molasses and the glycerol, and the compound additive is compounded with the molasses and the glycerol to realize synergistic interaction, so that the grinding aid effect of the grinding aid is greatly improved.
Detailed Description
The present application is further described in detail with reference to the following examples, which are specifically illustrated by the following: the following examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer, and the starting materials used in the following examples are available from ordinary commercial sources unless otherwise specified.
The catalyst is concentrated sulfuric acid;
the silane coupling agent is selected from a silane coupling agent KH-560.
Preparation example of abrasion-resistant Capsule
Preparation example 1
A preparation method of an abrasion-resistant capsule comprises the following steps: heating 40g of phthalic anhydride to melt to obtain a coating solution, and spraying the coating solution on the spread and dispersed 50g of silicon nitride surface to obtain the wear-resistant capsule.
Preparation example 2
A preparation method of an abrasion-resistant capsule comprises the following steps: 50g of phthalic anhydride is heated to be melted to obtain a coating solution, and the coating solution is sprayed on the surface of spread and dispersed 60g of silicon nitride to obtain the wear-resistant capsule.
Preparation example 3
A preparation method of an abrasion-resistant capsule comprises the following steps: 45g of phthalic anhydride is heated to be melted to obtain a coating solution, and the coating solution is sprayed on the surface of spread and dispersed 55g of silicon nitride to obtain the wear-resistant capsule.
Preparation example of modified Glycerol
Preparation example 4
A preparation method of modified glycerol comprises the following steps: mixing 15 parts of triisopropanolamine and 15 parts of formic acid to obtain a basic mixed solution, adding 20 parts of glycerol to the basic mixed solution while stirring to obtain a base solution, heating the base solution to 65 ℃, adding a catalyst while stirring to obtain a mixed solution, heating the mixed solution to 85 ℃, continuously stirring for 10min, and standing for 30min to obtain the modified glycerol.
Preparation example 5
A preparation method of modified glycerol comprises the following steps: mixing 25 parts of triisopropanolamine and 25 parts of formic acid to obtain a basic mixed solution, adding 30 parts of glycerol to the basic mixed solution while stirring to obtain a base solution, heating the base solution to 70 ℃, adding a catalyst while stirring to obtain a mixed solution, heating the mixed solution to 90 ℃, continuously stirring for 15min, and standing for 50min to obtain the modified glycerol.
Preparation example 6
A preparation method of modified name glycerol comprises the following steps: mixing 20 parts of triisopropanolamine and 20 parts of formic acid to obtain a basic mixed solution, adding 25 parts of glycerol to the basic mixed solution while stirring to obtain a base solution, heating the base solution to 65 ℃, adding a catalyst while stirring to obtain a mixed solution, heating the mixed solution to 85 ℃, continuously stirring for 15min, and standing for 40min to obtain the modified glycerol.
Preparation example of composite auxiliary
Preparation example 7
A preparation method of the composite auxiliary agent comprises the following steps: mixing 30g of modified glycerol prepared by the method in preparation example 4, 10g of sodium dodecyl sulfate and 20g of triisopropanolamine to obtain a mixed base solution, heating the mixed base solution to 70 ℃, then dropwise adding 1g of 32% sodium hydroxide aqueous solution into the mixed base solution while stirring, continuously heating for 1h to obtain a basic auxiliary agent, heating the basic auxiliary agent to 85 ℃, continuously heating for 2h, cooling to room temperature, and adjusting the pH value to be neutral to obtain the composite auxiliary agent.
Preparation example 8
A preparation method of the composite auxiliary agent comprises the following steps: mixing 40g of modified glycerol prepared by the method in preparation example 4, 15g of sodium dodecyl sulfate and 30g of triisopropanolamine to obtain a mixed base solution, heating the mixed base solution to 80 ℃, then dropwise adding 3g of 32% sodium hydroxide aqueous solution into the mixed base solution while stirring, continuously heating for 1.5 hours to obtain a basic auxiliary agent, heating the basic auxiliary agent to 90 ℃, continuously heating for 2.5 hours, cooling to room temperature, and then adjusting the pH value to be neutral to obtain the composite auxiliary agent.
Preparation example 9
A preparation method of the composite auxiliary agent comprises the following steps: mixing 35g of modified glycerol prepared by the method in preparation example 4, 12.5g of sodium dodecyl sulfate and 25g of triisopropanolamine to obtain a mixed base solution, heating the mixed base solution to 75 ℃, then dropwise adding 2g of 32% sodium hydroxide aqueous solution into the mixed base solution while stirring, continuously heating for 1h to obtain a basic additive, heating the basic additive to 90 ℃, continuously heating for 2h, cooling to room temperature, and adjusting the pH value to be neutral to obtain the composite additive.
Preparation example 10
A compound additive was prepared by the method of preparation example 9, except that 35g of modified glycerin in the raw material was prepared by the method of preparation example 5.
Preparation example 11
A compound additive was prepared by the method of preparation example 9, except that 35g of modified glycerin in the raw material was prepared by the method of preparation example 6.
Preparation example of Secondary grinding agent
Preparation example 12
The secondary grinding agent comprises the following raw materials in parts by weight: 25 parts of the wear-resistant capsule prepared by the method in preparation example 1, 12g of water, 15g of ammonium acetate and 1g of glucose.
Preparation example 13
A secondary grinding agent comprises the following raw materials in parts by weight: 40 parts of wear-resistant capsules prepared by the method in preparation example 1, 16g of water, 30g of ammonium acetate and 2g of glucose.
Preparation example 14
A secondary grinding agent comprises the following raw materials in parts by weight: 33 parts of wear-resistant capsules prepared by the method in preparation example 1, 14g of water, 23g of ammonium acetate and 1.5g of glucose.
Preparation example 15
A secondary grinding agent was prepared by the method of production example 14 except that 33g of abrasion resistant capsules of the raw material was prepared by the method of production example 2.
Preparation example 16
A secondary grinding agent was prepared by the method of production example 14 except that 33g of abrasion resistant capsules of the raw material was prepared by the method of production example 3.
Preparation example of Primary grinding agent
Preparation example 17
The primary grinding agent comprises the following raw materials in parts by weight: 6g of maleic acid and 3g of silane coupling agent.
Preparation example 18
The primary grinding agent comprises the following raw materials in parts by weight: 10g of maleic acid and 8g of silane coupling agent.
Preparation example 19
The primary grinding agent comprises the following raw materials in parts by weight: 8g of maleic acid and 5.5g of a silane coupling agent.
Preparation example 20
A primary grinding agent was prepared by the method of production example 19, except that 30 parts of the composite auxiliary agent prepared by the method of production example 7 was added to the raw materials.
Preparation example 21
A primary grinding agent was prepared by following the procedure of preparation example 19, except that 40 parts of the composite auxiliary agent prepared by the procedure of preparation example 7 was further added to the raw materials.
Preparation example 22
A primary grinding agent was prepared by following the procedure of preparation example 19 except that 35 parts of the composite auxiliary agent prepared by the procedure of preparation example 7 was further added to the raw materials.
Preparation example 23
A primary grinding agent was prepared in accordance with the method in preparation example 22, except that 35 parts of the composite auxiliary as a raw material was prepared in accordance with the method in preparation example 8.
Preparation example 24
A primary grinding agent was prepared in accordance with the method in preparation example 22, except that 35 parts of the composite auxiliary as a raw material was prepared in accordance with the method in preparation example 9.
Preparation example 25
A primary grinding agent was prepared in accordance with the method in preparation example 22, except that 35 parts of the composite auxiliary as the raw material was prepared in accordance with the method in preparation example 10.
Preparation example 26
A primary grinding agent was prepared in accordance with the method in production example 22, except that 35 parts of the composite auxiliary as the raw material was prepared in accordance with the method in production example 11.
Preparation example 27
A primary grinding agent was prepared by following the procedure of preparation example 26 except that 4g of molasses and 4g of glycerin were further added to the starting materials.
Comparative preparation example of Secondary grinding agent
Comparative preparation example 1
A secondary grinding agent was prepared by the method of preparation example 16, except that 33g of the abrasion resistant capsules were not added to the raw materials.
Comparative preparation example 2
A secondary grinding agent was produced in accordance with the method in production example 16, except that 33g of the abrasion resistant capsules and the like in the raw materials were replaced with 33g of silicon nitride.
Comparative preparation example of Primary grinding agent
Comparative preparation example 3
A primary grinding agent was prepared by following the procedure in preparation example 27 except that 35g of a composite auxiliary in the raw material was replaced with 35g of triisopropanolamine.
Comparative preparation example 4
A primary grinding agent was prepared by the method of preparation example 27, except that in the preparation of the raw material composite additive, 35g of modified glycerin and the like were replaced with 35g of ordinary glycerin.
Comparative preparation example 5
A primary grinding agent was prepared by following the procedure in preparation example 27 except that the weight of 4g of molasses and 4g of glycerin in the raw materials was replaced with 8g of the composite auxiliary agent.
Comparative preparation example 6
A primary grinding agent was prepared by following the procedure in preparation example 27 except that 17.5g of molasses and 17.5g of glycerin were substituted for 35g of a compounding aid and the like in the raw materials.
Examples
Example 1
A slag mineral powder grinding aid comprises: 20g of the primary grinding agent prepared by the method in production example 17 and 10g of the secondary grinding agent prepared by the method in production example 12.
A grinding method using slag mineral powder grinding aid comprises the following steps:
step S1: mixing 100kg of slag mineral powder with 20g of primary grinding agent, and then rolling and crushing to obtain crushed materials;
step S2: mixing the crushed materials with 10g of secondary grinding agent, and sequentially carrying out coarse grinding and fine grinding to obtain base powder;
step S3: and selecting the basic powder, outputting and collecting the qualified powder, and returning the unqualified powder to the coarse grinding step for continuous grinding.
Example 2
A slag mineral powder grinding aid comprises: 22.5g of the primary grinding agent prepared by the method in production example 18 and 7.5g of the secondary grinding agent prepared by the method in production example 13.
A grinding method using slag mineral powder grinding aid comprises the following steps:
step S1: mixing 100kg of slag mineral powder and 22.5g of primary grinding agent, and then rolling and crushing to obtain crushed materials;
step S2: mixing the crushed materials with 7.5g of secondary grinding agent, and sequentially carrying out coarse grinding and fine grinding to obtain base powder;
step S3: and selecting the basic powder, outputting and collecting the qualified powder, and returning the unqualified powder to the coarse grinding step for continuous grinding.
Example 3
A slag mineral powder grinding aid comprises: 21.5g of the primary grinding agent prepared by the method in production example 19 and 8.5g of the secondary grinding agent prepared by the method in production example 14.
A grinding method using slag mineral powder grinding aid comprises the following steps:
step S1: mixing 100kg of slag mineral powder and 21.5g of primary grinding agent, and then rolling and crushing to obtain crushed materials;
step S2: mixing the crushed materials with 8.5g of secondary grinding agent, and carrying out coarse grinding and fine grinding in sequence to obtain base powder;
step S3: and selecting the basic powder, outputting and collecting the qualified powder, and returning the unqualified powder to the coarse grinding step for continuous grinding.
Example 4
A slag ore powder grinding aid was prepared by the method of example 3, except that 8.5g of the secondary grinding aid in the raw material was prepared by the method of preparation example 15.
Example 5
A slag ore powder grinding aid was prepared by the method of example 3, except that 8.5g of the secondary grinding aid in the raw material was prepared by the method of preparation example 16.
A grinding method using a slag ore powder grinding aid was performed in accordance with the method of example 3.
Example 6
A slag ore powder grinding aid was prepared in the same manner as in example 3, except that 21.5g of the primary grinding agent in the raw material was prepared in the same manner as in preparation example 20.
A grinding method using a slag ore powder grinding aid was performed in accordance with the method of example 3.
Example 7
A slag ore powder grinding aid was prepared in the same manner as in example 3, except that 21.5g of the primary grinding agent in the raw material was prepared in the same manner as in preparation example 21.
A grinding method using a slag ore powder grinding aid was performed in accordance with the method of example 3.
Example 8
A slag ore powder grinding aid was prepared in the same manner as in example 3, except that 21.5g of the primary grinding agent in the raw material was prepared in the same manner as in preparation example 22.
A grinding method using a slag ore powder grinding aid was performed in accordance with the method of example 3.
Example 9
A slag ore powder grinding aid was prepared in the same manner as in example 3, except that 21.5g of the primary grinding agent in the raw material was prepared in the same manner as in preparation example 23.
A grinding method using a slag ore powder grinding aid was performed in accordance with the method of example 3.
Example 10
A slag ore powder grinding aid was prepared in the same manner as in example 3, except that 21.5g of the primary grinding agent in the raw material was prepared in the same manner as in preparation example 24.
A grinding method using a slag ore powder grinding aid was performed in accordance with the method of example 3.
Example 11
A slag ore powder grinding aid was prepared by the method of preparation example 25, except that 21.5g of the primary grinding agent in the raw material was prepared.
A grinding method using a slag ore powder grinding aid was performed in accordance with the method of example 3.
Example 12
A slag ore powder grinding aid was prepared by the method of example 3, except that 21.5g of the primary grinding agent in the raw material was prepared by the method of preparation example 26.
A grinding method using a slag ore powder grinding aid was performed in accordance with the method of example 3.
Example 13
A slag ore powder grinding aid was produced by the method of example 3, except that 21.5g of the primary grinding agent in the raw material was produced by the method of production example 27.
A grinding method using a slag ore powder grinding aid was performed in accordance with the method of example 3.
Example 14
A slag ore powder grinding aid was prepared in accordance with the method of example 3.
A grinding method using a slag ore powder grinding aid was conducted in the same manner as in example 3, except that in step 2, 0.8g of ethanol was sprayed to the product after coarse grinding before the fine grinding operation.
Comparative example
Comparative example 1
A slag ore powder grinding aid was prepared in the same manner as in example 5, except that the secondary grinding aid in the raw material was prepared in the same manner as in comparative preparation example 1.
A grinding method using a slag ore powder grinding aid was performed in accordance with the method of example 5.
Comparative example 2
A slag mineral powder grinding aid was prepared in accordance with the method of example 5, except that the secondary grinding aid in the raw material was prepared in accordance with the method of comparative preparation example 2.
A grinding method using a slag ore powder grinding aid was performed in accordance with the method of example 5.
Comparative example 3
A slag ore powder grinding aid was prepared in the same manner as in example 5, except that the primary grinding aid in the raw material was prepared in the same manner as in comparative preparation example 3.
A grinding method using a slag ore powder grinding aid was performed according to the method in example 5.
Comparative example 4
A slag ore powder grinding aid was prepared in the same manner as in example 5, except that the primary grinding aid in the raw material was prepared in the same manner as in comparative preparation example 4.
A grinding method using a slag ore powder grinding aid was performed in accordance with the method of example 5.
Comparative example 5
A slag ore powder grinding aid was prepared in the same manner as in example 5, except that the primary grinding aid in the raw material was prepared in the same manner as in comparative preparation example 5.
A grinding method using a slag ore powder grinding aid was performed in accordance with the method of example 5.
Comparative example 6
A slag ore powder grinding aid was prepared in the same manner as in example 5, except that the primary grinding aid in the raw material was prepared in the same manner as in comparative preparation example 6.
A grinding method using a slag ore powder grinding aid was performed in accordance with the method of example 5.
Performance test
The slag ore powder ground in examples 1 to 14 and comparative examples 1 to 6 were respectively subjected to slump and compressive strength testing according to GB/T50081-2012 Standard for testing mechanical Properties of general concrete, and the concrete test pieces were 100mm × 100mm × 100mm in size, and the test results are shown in Table 1.
Table 1:
combining example 5 and comparative examples 1-2, and their data in table 1, it can be seen that comparative example 1 differs from example 5 in that no abrasion resistant capsules are added to the raw materials; comparative example 2 is different in that the raw materials such as abrasion resistant capsules are replaced with silicon nitride. The concrete prepared from the slag mineral powder in the comparative examples 1-2 has significantly lower fluidity and compressive strength than those of the concrete prepared in the example 5, which shows that the wear-resistant capsule with silicon nitride as a core material and phthalic anhydride as a coating is adopted as a raw material in the example 5, so that the grinding effect of the slag mineral powder can be significantly improved, and the working performance of the concrete can be significantly improved.
The basic reason is that the core material of the wear-resistant capsule is silicon nitride, and the silicon nitride is high in hardness and wear-resistant, so that the silicon nitride can be used for grinding uneven edges and corners on the surfaces of particles in the slag mineral powder, and the possibility that grinding effect is influenced by the embedding effect of the edges and corners among the particles is reduced; and the silicon nitride particles have lubricating property, so that the possibility of embedding between the silicon nitride particles and slag mineral powder particles can be reduced. The coating phthalic anhydride has a lubricating effect, so that the wear-resistant capsules can be fully dispersed in the secondary grinding agent, and the possibility of embedding between the wear-resistant capsule particles and the slag mineral powder particles can be further reduced, thereby improving the grinding effect of the slag mineral powder.
Combining the data of example 12 and comparative examples 3-4, example 5 and table 1, it can be seen that, unlike example 12, comparative example 3 differs in that the weight of 35g of the compounding aid and the like in the raw material of comparative example 3 is replaced with 35g of triisopropanolamine; the difference of the comparative example 4 is that 35g of modified glycerol and the like are replaced by 35g of common glycerol in the preparation process of the raw material composite auxiliary agent; example 5 differs in that no compounding aid is added to the primary grinding agent of example 5. The fluidity and compressive strength of the concrete prepared from the slag ore powder in example 12 are much higher than those of comparative example 3 and comparative example 4, and are also obviously better than those of example 5.
In example 12, the modified glycerol is used in combination with sodium dodecyl sulfate and triisopropanolamine to obtain the composite assistant, which can effectively improve the fluidity of particles in the slag mineral powder, thereby effectively improving the grinding effect and further obviously improving the performance of the concrete.
As can be seen by combining example 13 with comparative examples 5 to 6 and example 12 with Table 1, comparative example 5 is different from example 13 in that the weight of 4g of molasses, 4g of glycerin and the like in the raw material is replaced with 8g of a compounding aid; the difference of the comparative example 6 is that the weight of 35g of the composite auxiliary agent in the raw material is replaced by 17.5g of molasses and 17.5g of glycerol; example 12 differs in that molasses and glycerol were not added to the feed. The fluidity and compressive strength of the concrete obtained by preparing the slag ore powder in example 13 are not only much higher than those of comparative example 3 and comparative example 4, but also significantly better than those of example 5. The compound additive is compounded with the molasses and the glycerol in the example 13, wherein the compound additive can be synergistically compounded with the molasses and the glycerol, so that the grinding aid effect of the grinding aid is further greatly improved, and the working performance of the concrete can be improved.
As can be seen by combining example 14 with example 13 and by combining the data in Table 1, example 14 differs from example 13 in that during grinding with a grinding aid, step 2 adds a step of spraying 0.8g of ethanol onto the product after coarse grinding before the fine grinding operation; the fluidity and compressive strength of the concrete prepared from the slag mineral powder in example 14 are higher than those of example 13, which shows that when the slag mineral powder is ground by using the grinding aid provided by the application, the grinding aid effect of the grinding aid can be further improved by adding the step of spraying ethanol to the product after coarse grinding before fine grinding operation, so that the working performance of the concrete is improved.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (9)
1. The slag mineral powder grinding aid is characterized by comprising a primary grinding agent and a secondary grinding agent in a weight ratio of (2-3) to 1, wherein the primary grinding agent is prepared from the following raw materials in parts by weight based on the weight of the primary grinding agent: 6-10 parts of maleic acid and 3-8 parts of silane coupling agent;
based on the weight of the secondary grinding agent, the secondary grinding agent is prepared from the following raw materials in parts by weight: 25-40 parts of wear-resistant capsules, 12-16 parts of water, 15-30 parts of ammonium acetate and 1-2 parts of glucose; the wear-resistant capsule comprises a core material and a coating, wherein the core material is silicon nitride, and the coating is phthalic anhydride.
2. The slag mineral powder grinding aid as claimed in claim 1, wherein: based on the weight of the wear-resistant capsule, the wear-resistant capsule is prepared from the following raw materials in parts by weight: 50-60 parts of silicon nitride and 40-50 parts of phthalic anhydride.
3. The slag mineral powder grinding aid as claimed in claim 2, wherein: the wear-resistant capsule is prepared by a method comprising the following steps: heating phthalic anhydride to melt to obtain a coating solution, and spraying the coating solution on the spread and dispersed silicon nitride surface to obtain the wear-resistant capsule.
4. The slag mineral powder grinding aid as claimed in claim 1, wherein: based on the weight of the primary grinding agent, the primary grinding agent also comprises 30-40 parts of a composite auxiliary agent; based on the weight of the composite auxiliary agent, the composite auxiliary agent is prepared from the following raw materials in parts by weight: 30-40 parts of modified glycerol, 20-30 parts of triisopropanolamine and 10-15 parts of sodium dodecyl sulfate, wherein the modified glycerol is obtained by modifying glycerol with triisopropanolamine and formic acid.
5. The slag mineral powder grinding aid as claimed in claim 4, wherein: based on the weight of the modified glycerol, the modified glycerol is prepared by the method comprising the following steps:
mixing 15-25 parts of triisopropanolamine and 15-25 parts of formic acid to obtain a basic mixed solution, adding 20-30 parts of glycerol into the basic mixed solution while stirring to obtain a base solution, heating the base solution to 65-70 ℃, then adding a catalyst while stirring to obtain a mixed solution, heating the mixed solution to 85-90 ℃, continuously stirring for 10-15min, and standing for 30-50min to obtain the modified glycerol.
6. The slag mineral powder grinding aid as claimed in claim 4, wherein: based on the weight of the composite auxiliary agent, the composite auxiliary agent is prepared by the method comprising the following steps: mixing modified glycerol, sodium dodecyl sulfate and triisopropanolamine to obtain a mixed base solution, heating the mixed base solution to 70-80 ℃, then dropwise adding 1-3 parts of 32% sodium hydroxide aqueous solution into the mixed base solution while stirring, continuously heating for 1-1.5h to obtain a basic auxiliary agent, heating the basic auxiliary agent to 85-90 ℃, continuously heating for 2-2.5h, cooling to room temperature, and adjusting the pH value to be neutral to obtain the composite auxiliary agent.
7. The slag mineral powder grinding aid as claimed in claim 4, wherein: the primary grinding agent also comprises 3-5 parts of molasses and 3-5 parts of glycerol by weight.
8. The method for grinding the slag mineral powder is realized by the slag mineral powder grinding aid as defined in any one of claims 1 to 7, and specifically comprises the following steps:
step S1: mixing slag mineral powder and an initial grinding agent, and then rolling and crushing to obtain crushed materials;
step S2: mixing the crushed materials with a secondary grinding agent, and performing coarse grinding and fine grinding in sequence to obtain base powder;
step S3: and selecting the basic powder, outputting and collecting the qualified powder, and returning the unqualified powder to the coarse grinding step for continuous grinding.
9. The method for grinding slag ore powder according to claim 8, wherein in the step 2, before the fine grinding operation, 0.5 to 1 part of ethanol is sprayed on the product after the coarse grinding, based on the weight of the grinding aid.
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| IT8223343A0 (en) * | 1981-09-21 | 1982-09-20 | Grace W R & Co | GRINDING AID FOR GRANULAR BLAST FURNACE SLAG. |
| JP2000319071A (en) * | 1999-05-06 | 2000-11-21 | Nitsukatoo:Kk | Grinding/dispersion media and their production |
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Application publication date: 20220729 |