CN115321955A - Magnesium castable and preparation method and application thereof - Google Patents
Magnesium castable and preparation method and application thereof Download PDFInfo
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- CN115321955A CN115321955A CN202210889137.1A CN202210889137A CN115321955A CN 115321955 A CN115321955 A CN 115321955A CN 202210889137 A CN202210889137 A CN 202210889137A CN 115321955 A CN115321955 A CN 115321955A
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- magnesium
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- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 239000011777 magnesium Substances 0.000 title claims abstract description 72
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 72
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- -1 magnesium-aluminum-silicon hydrate Chemical compound 0.000 claims abstract description 50
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000011230 binding agent Substances 0.000 claims abstract description 31
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 26
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000843 powder Substances 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000002270 dispersing agent Substances 0.000 claims abstract description 13
- 239000002245 particle Substances 0.000 claims abstract description 13
- 229920005646 polycarboxylate Polymers 0.000 claims abstract description 13
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 11
- 239000004566 building material Substances 0.000 claims abstract description 8
- 239000004567 concrete Substances 0.000 claims abstract description 8
- 239000000243 solution Substances 0.000 claims description 41
- 239000012267 brine Substances 0.000 claims description 32
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 32
- 229910052782 aluminium Inorganic materials 0.000 claims description 14
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 13
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims description 12
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 12
- 239000006227 byproduct Substances 0.000 claims description 12
- 229910001425 magnesium ion Inorganic materials 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- 239000000706 filtrate Substances 0.000 claims description 11
- 239000012265 solid product Substances 0.000 claims description 11
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000007767 bonding agent Substances 0.000 claims description 8
- 238000000967 suction filtration Methods 0.000 claims description 7
- 239000004111 Potassium silicate Substances 0.000 claims description 6
- 239000004115 Sodium Silicate Substances 0.000 claims description 6
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 claims description 6
- 229910052912 lithium silicate Inorganic materials 0.000 claims description 6
- 239000001103 potassium chloride Substances 0.000 claims description 6
- 235000011164 potassium chloride Nutrition 0.000 claims description 6
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 6
- 235000019353 potassium silicate Nutrition 0.000 claims description 6
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims description 5
- 229910052808 lithium carbonate Inorganic materials 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 239000011780 sodium chloride Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 23
- DHRRIBDTHFBPNG-UHFFFAOYSA-L magnesium dichloride hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[Cl-].[Cl-] DHRRIBDTHFBPNG-UHFFFAOYSA-L 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 239000003337 fertilizer Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229940072033 potash Drugs 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 235000015320 potassium carbonate Nutrition 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 3
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical compound [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 3
- 230000003446 memory effect Effects 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 229910001629 magnesium chloride Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- SWHAQEYMVUEVNF-UHFFFAOYSA-N magnesium potassium Chemical compound [Mg].[K] SWHAQEYMVUEVNF-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001935 peptisation Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Classifications
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- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
- C04B35/043—Refractories from grain sized mixtures
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- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
- C04B2235/6022—Injection moulding
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/606—Drying
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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Abstract
The application relates to the field of efficient utilization of resources, and particularly discloses a magnesium castable and a preparation method and application thereof. The magnesium castable comprises the following raw materials in parts by weight: 18 to 26 weight percent of magnesium oxide fine powder, 1 to 3 weight percent of silicon dioxide micropowder, 1 to 3 weight percent of magnesium-aluminum-silicon hydrate binding agent, 0.05 to 0.2 weight percent of polycarboxylate dispersant and the balance of magnesium oxide particles; the preparation method comprises the following steps: the raw material components are uniformly mixed to obtain a premix, 4-6 wt% of water is added into the premix and uniformly mixed to obtain a wet mixed material, and finally the wet mixed material is cast and formed in a vibration mode to obtain the castable. The magnesium castable can be used in the fields of magnesium refractory castable, concrete and environment-friendly building materials, and has the advantages of strong bonding strength and high breaking strength; in addition, the preparation method has the advantages of simple process flow, high yield, short period, safety and environmental protection.
Description
Technical Field
The application relates to the field of efficient utilization of resources, in particular to a magnesium castable and a preparation method and application thereof.
Background
The Chevron salt lake is the largest soluble potassium magnesium salt deposit in China, the region is the largest industrial production base of potash fertilizers in China, the annual output is over 500 ten thousand tons, and the Chevron salt lake accounts for 96% of the output of the potash fertilizers in China and the sales of the potash fertilizers made in China, however, mgCl2 brine with the concentration of 40m & lt 3 & gt is generated when 1 ton of potash fertilizer is produced. Early on-site discharge causes flooding of old brine around enterprises, and currently, the old brine is mostly discharged back to a salt lake in a remote discharge mode and forms bischofite (MgCl2.6H2O) through solarization and evaporation. With the continuous expansion of the production scale of potassium chloride, the treatment mode leads to the increase of byproduct bischofite year by year, which not only causes the waste of magnesium resource, but also causes serious damage to the natural ecological balance of the salt lake and forms the 'magnesium damage' of the salt lake. At present, the utilization approaches of bischofite are mainly as follows: firstly, dehydrating bischofite, smelting metal magnesium by a molten salt electrolysis method, and secondly, preparing magnesium hydroxide/magnesium oxide and the like by carrying out high-temperature pyrolysis or chemical reaction on the bischofite. However, no matter what method is used for producing magnesium products, the method is economic, efficient and pollution-free and is a basic problem in the current development, so that the comprehensive utilization of bischofite resources is realized with low cost, high efficiency and added value, and the method has very important significance for eliminating 'magnesium damage' in salt lakes, realizing the sustainable development of the salt lakes and the technical progress of the magnesium industry.
The castable is also called refractory castable, is granular and powdery material prepared by adding a certain amount of binder into refractory material, has higher fluidity and is an unshaped refractory material molded by a pouring mode. The castable is an unshaped refractory material which is most commonly consumed and applied at present, is used for constructing all structures of various heating furnace linings, and can be used for smelting furnaces. However, the existing castable has low bonding strength, weak breaking strength and low slag resistance, and the magnesium castable has large dust and waste gas discharge in the production process, thereby causing environmental pollution.
Disclosure of Invention
In order to effectively utilize magnesium resources in salt lake brine and improve the breaking strength of the castable, the application provides a magnesium castable and a preparation method and application thereof.
In a first aspect, the present application provides a magnesium castable material, which adopts the following technical scheme:
the magnesium castable comprises the following raw materials in parts by weight: 18 to 26 weight percent of magnesium oxide fine powder, 1 to 3 weight percent of silicon dioxide micropowder, 1 to 3 weight percent of magnesium-aluminum-silicon hydrate bonding agent, 0.05 to 0.2 weight percent of polycarboxylate dispersant and the balance of magnesium oxide particles.
By adopting the technical scheme, the magnesium-aluminum-silicon hydrate bonding agent is added into the magnesium castable, so that the bonding strength of the castable can be obviously improved, and the anti-burst performance and the slag resistance are improved. Compared with the traditional Portland cement binding agent, the magnesium castable in the application can obviously reduce the production energy consumption, reduce the discharge amount of dust and waste gas in the production process, and is safe, environment-friendly and excellent in durability. In addition, the magnesium castable material containing the magnesium-aluminum-silicon hydrate bonding agent subjected to low-temperature (200-400 ℃) preheating treatment has the advantage that the early bonding strength is improved due to the memory effect of the magnesium-aluminum-silicon hydrate bonding agent.
In a second aspect, the application provides a preparation method of a magnesium castable, which adopts the following technical scheme:
the preparation method of the magnesium castable comprises the following preparation steps:
A. calculating and determining the proportion of each raw material component according to the total amount of the magnesium castable to be prepared, and weighing each raw material component;
B. uniformly mixing the magnesium oxide fine powder, the silicon dioxide micro powder, the polycarboxylate dispersant, the magnesium oxide particles and the magnesium-aluminum-silicon hydrate binding agent weighed in the step A to obtain a premix;
C. adding 4-6 wt% of water into the premix obtained in the step B, uniformly mixing to obtain a wet mixed material, and finally pouring and vibration-forming the wet mixed material to obtain a pouring material;
D. and D, curing the casting material formed by vibration in the step C for 24-48 h at the temperature of 20-50 ℃ and the humidity of 70-80%, and preserving heat for 2-8 h at the temperature of 1300-1600 ℃ after drying.
By adopting the technical scheme, the magnesium-aluminum-silicon hydrate bonding agent is added into the magnesium castable to replace part of SiO2 micro powder, so that the mechanical strength of the material is improved, and the high-temperature breaking strength is improved by 15%. In addition, the reaction activity of the magnesium-aluminum-silicon hydrate binding agent subjected to preheating treatment is higher, solid-phase sintering is promoted, and the high-temperature strength of the material is improved. The preparation method has the advantages of simple process flow, high yield, short period, safe and environment-friendly preparation process and no emission of waste gas, waste water and waste residues; the prepared magnesium-aluminum-silicon water combined magnesia refractory castable has good mechanical property and excellent slag penetration resistance.
Preferably, the preparation method of the magnesium-aluminum-silicon hydrate binding agent comprises the following steps:
s1, according to the ratio of magnesium ions to aluminum ions in salt lake brine: adding silicate solution and aluminum ion solution into salt lake brine according to the molar concentration ratio of silicon ions of (0.6-2.0) to (1.0-3.0) to 1, and uniformly stirring to obtain mixed solution;
s2, standing the mixed solution obtained in the step S1 in a reaction kettle at the temperature of 80-150 ℃ for 10-91 hours, washing, and performing suction filtration to respectively obtain a solid product and a filtrate;
and S3, drying and grinding the solid product obtained in the step S2 at the temperature of 45-120 ℃ to obtain the magnesium-aluminum-silicon hydrate binding agent based on the salt lake brine.
By adopting the technical scheme, a large amount of magnesium chloride resources contained in the salt lake brine are developed and utilized, silicate and aluminum ion solution are added into the salt lake brine, and the solid product obtained after mixing, standing, washing, suction filtration and suction filtration is dried to obtain the magnesium-aluminum-silicon hydrate binding agent based on the salt lake brine. The method has the advantages of simple process, high yield, safety, environmental protection and short period, and the salt lake brine-based magnesium-aluminum-silicon hydrate binding agent prepared by the method has high purity, excellent thermal stability and good use effect, and simultaneously has the gel binding characteristic.
Preferably, the silicate solution in step S1 is one of a potassium silicate solution, a sodium silicate solution and a lithium silicate solution.
By adopting the technical scheme, the potassium silicate solution, the sodium silicate solution and the lithium silicate solution are very easy to dissolve in water and can fully react in the salt lake brine, and potassium ions, sodium ions and lithium ions dissolved in the salt lake brine cannot generate interlocking reaction with other substances, so that the main reaction is not influenced.
Preferably, the concentration of magnesium ions in the salt lake brine in the step S1 is 0.37-1.5 mol/L.
By adopting the technical scheme, the magnesium resource is extracted in the preparation process, so that the effective utilization of the magnesium resource is realized; when the concentration of the magnesium ions is in the range, the silicate solution and the aluminum ion solution react with the magnesium ions most fully, and the obtained magnesium-aluminum-silicon hydrate binding agent has the best effect.
Preferably, the aluminum ion solution in step S1 is hydrated alumina or aluminum hydroxide.
By adopting the technical scheme, the hydrated alumina and the aluminum hydroxide are both white colloidal precipitates, have good peptization performance and strong cohesiveness, and can form a stable bonding agent with magnesium and silicon.
Preferably, the filtrate obtained in step S2 is evaporated and crystallized to obtain a byproduct, wherein the byproduct is one or two of potassium chloride, sodium chloride and lithium carbonate.
By adopting the technical scheme, the filtrate is evaporated and crystallized to obtain a byproduct, namely the metal elements in the silicate added at the early stage are recycled, so that the high-efficiency comprehensive utilization of resources is realized, and the waste of resources is reduced.
In a third aspect, the application provides an application of a magnesium castable, which adopts the following technical scheme:
a magnesium castable is used in the fields of magnesium refractory castable, concrete and environment-friendly building materials.
According to the magnesium-based castable, a large amount of magnesium chloride resources contained in salt lake brine are developed and utilized, the effective utilization of magnesium resources is realized, the magnesium-based castable is used in the fields of magnesium-based refractory castable, concrete, environment-friendly building materials and the like, and the magnesium-based castable is high in purity, excellent in thermal stability and good in using effect.
In summary, the present application has the following beneficial effects:
1. as the magnesium-aluminum-silicon hydrate bonding agent is added into the magnesium castable, the bonding strength of the castable can be obviously improved, and the anti-burst performance and the slag resistance are improved; the magnesium-aluminum-silicon hydrate binding agent has a memory effect, so that the early-stage binding strength is improved.
2. The preparation method has the advantages of simple process flow, high yield, short period, safe and environment-friendly preparation process and no emission of waste gas, waste water and waste residues; the prepared magnesium-aluminum-silicon water combined magnesium refractory castable has good mechanical property and excellent slag penetration resistance.
3. The magnesium-aluminum-silicon hydrate binding agent based on the salt lake brine has the advantages of high purity, excellent thermal stability and good use effect, and has the gel binding characteristic.
Detailed Description
The present application will be described in further detail with reference to examples.
Examples
Example 1
The magnesium castable comprises the following raw materials in parts by weight: 18 weight percent of fine magnesium oxide powder, 1 weight percent of fine silicon dioxide powder, 1 weight percent of magnesium-aluminum-silicon hydrate binding agent, 0.05 weight percent of polycarboxylate dispersant and the balance of magnesium oxide particles.
The preparation method of the magnesium-aluminum-silicon hydrate binding agent comprises the following steps:
s1, according to the ratio of magnesium ions to aluminum ions in salt lake brine: adding silicate solution and aluminum ion solution into salt lake brine, and uniformly stirring to obtain mixed solution, wherein the molar concentration ratio of silicon ions is 0.6: 1.0: 1; in this application the silicate solution is in potassium silicate solution, sodium silicate solution and lithium silicate solution, the concentration of magnesium ion is 0.37mol/L in the salt lake brine, the aluminium ion solution is hydrated alumina or aluminium hydroxide.
S2, standing the mixed solution obtained in the step S1 in a reaction kettle at the temperature of 80 ℃ for 10 hours, washing, and performing suction filtration to respectively obtain a solid product and a filtrate; and evaporating and crystallizing the filtrate to obtain a byproduct, wherein the byproduct is one or two of potassium chloride, sodium chloride and lithium carbonate.
And S3, drying the solid product obtained in the step S2 at 45 ℃, and grinding to obtain the magnesium-aluminum-silicon hydrate binding agent based on the salt lake brine.
The preparation method of the magnesium castable comprises the following preparation steps:
A. calculating and determining the proportion of each raw material component according to the total amount of the magnesium castable to be prepared, and weighing each raw material component;
B. b, uniformly mixing the magnesium oxide fine powder weighed in the step A, the silicon dioxide micro powder, the polycarboxylate dispersing agent, the magnesium oxide particles and the magnesium-aluminum-silicon hydrate binding agent to obtain a premix;
C. adding 4wt% of water into the premix obtained in the step B, uniformly mixing to obtain a wet mixed material, and finally pouring and vibration-forming the wet mixed material to obtain a pouring material;
D. and C, maintaining the castable formed by vibration in the step C for 24 hours at the temperature of 20 ℃ and the humidity of 70%, drying, and keeping the temperature for 2 hours at the temperature of 1300 ℃.
The magnesium castable is used in the fields of magnesium refractory castable, concrete and environment-friendly building materials.
Example 2
The magnesium castable comprises the following raw materials in parts by weight: 26 weight percent of fine magnesium oxide powder, 3 weight percent of fine silicon dioxide powder, 3 weight percent of magnesium-aluminum-silicon hydrate binding agent, 0.2 weight percent of polycarboxylate dispersant and the balance of magnesium oxide particles.
The preparation method of the magnesium-aluminum-silicon hydrate binding agent comprises the following steps:
s1, according to the ratio of magnesium ions to aluminum ions in salt lake brine: adding silicate solution and aluminum ion solution into salt lake brine, and uniformly stirring to obtain mixed solution, wherein the molar concentration ratio of silicon ions is 2.0: 3.0: 1; in this application the silicate solution is in potassium silicate solution, sodium silicate solution and lithium silicate solution, the concentration of magnesium ion is 1.5mol/L in the salt lake brine, the aluminium ion solution is hydrated alumina or aluminium hydroxide.
S2, standing the mixed solution obtained in the step S1 in a reaction kettle at the temperature of 150 ℃ for 91 hours, washing, and performing suction filtration to respectively obtain a solid product and a filtrate; and evaporating and crystallizing the filtrate to obtain a byproduct, wherein the byproduct is one or two of potassium chloride, sodium chloride and lithium carbonate.
And S3, drying the solid product obtained in the step S2 at 120 ℃, and grinding to obtain the magnesium-aluminum-silicon hydrate binding agent based on the salt lake brine.
The preparation method of the magnesium castable comprises the following preparation steps:
A. calculating and determining the proportion of each raw material component according to the total amount of the magnesium castable to be prepared, and weighing each raw material component;
B. b, uniformly mixing the magnesium oxide fine powder weighed in the step A, the silicon dioxide micro powder, the polycarboxylate dispersing agent, the magnesium oxide particles and the magnesium-aluminum-silicon hydrate binding agent to obtain a premix;
C. adding 6wt% of water into the premix obtained in the step B, uniformly mixing to obtain a wet mixed material, and finally pouring and vibration-forming the wet mixed material to obtain a pouring material;
D. and C, curing the castable formed by vibration in the step C for 48 hours at the temperature of 50 ℃ and the humidity of 80%, and preserving heat for 8 hours at the temperature of 1600 ℃ after drying.
The magnesium castable is used in the fields of magnesium refractory castable, concrete and environment-friendly building materials.
Example 3
The magnesium castable comprises the following raw materials in parts by weight: 22wt% of magnesium oxide fine powder, 2wt% of silicon dioxide micropowder, 2wt% of magnesium-aluminum-silicon hydrate binding agent, 0.1wt% of polycarboxylate dispersant and the balance of magnesium oxide particles.
The preparation method of the magnesium-aluminum-silicon hydrate binding agent comprises the following steps:
s1, according to the ratio of magnesium ions to aluminum ions in salt lake brine: adding silicate solution and aluminum ion solution into salt lake brine, and uniformly stirring to obtain mixed solution, wherein the molar concentration ratio of silicon ions is 0.8: 2.0: 1; in this application the silicate solution is in potassium silicate solution, sodium silicate solution and lithium silicate solution, the concentration of magnesium ion is 1.0mol/L in the salt lake brine, the aluminium ion solution is hydrated alumina or aluminium hydroxide.
S2, standing the mixed solution obtained in the step S1 in a reaction kettle at the temperature of 120 ℃ for 50 hours, washing, and performing suction filtration to respectively obtain a solid product and a filtrate; and evaporating and crystallizing the filtrate to obtain a byproduct, wherein the byproduct is one or two of potassium chloride, sodium chloride and lithium carbonate.
And S3, drying the solid product obtained in the step S2 at the temperature of 80 ℃, and grinding to obtain the magnesium-aluminum-silicon hydrate binding agent based on the salt lake brine.
The preparation method of the magnesium castable comprises the following preparation steps:
A. calculating and determining the proportion of each raw material component according to the total amount of the magnesium castable to be prepared, and weighing each raw material component;
B. uniformly mixing the magnesium oxide fine powder, the silicon dioxide micro powder, the polycarboxylate dispersant, the magnesium oxide particles and the magnesium-aluminum-silicon hydrate binding agent weighed in the step A to obtain a premix;
C. adding 5wt% of water into the premix obtained in the step B, uniformly mixing to obtain a wet mixed material, and finally pouring and vibration-molding the wet mixed material to obtain a pouring material;
D. and C, maintaining the castable subjected to vibration molding in the step C for 36 hours at the temperature of 35 ℃ and the humidity of 75%, drying, and keeping the temperature for 5 hours at 1400 ℃.
The magnesium castable is used in the fields of magnesium refractory castable, concrete and environment-friendly building materials.
Comparative example
The magnesium castable comprises the following raw materials in parts by weight: 22wt% of fine magnesia powder, 2wt% of fine silica powder, 0.1wt% of polycarboxylate dispersant and the balance of magnesia particles.
The preparation method of the magnesium castable comprises the following preparation steps:
A. calculating and determining the proportion of each raw material component according to the total amount of the magnesium castable to be prepared, and weighing each raw material component;
B. uniformly mixing the magnesium oxide fine powder, the silicon dioxide micro powder, the polycarboxylate dispersant and the magnesium oxide particles weighed in the step A to obtain a premix;
C. adding 5wt% of water into the premix obtained in the step B, uniformly mixing to obtain a wet mixed material, and finally pouring and vibration-molding the wet mixed material to obtain a pouring material;
D. and D, maintaining the castable subjected to vibration molding in the step C for 36 hours at the temperature of 35 ℃ and the humidity of 75%, drying, and keeping the temperature for 5 hours at 1400 ℃.
The magnesium castable is used in the fields of magnesium refractory castable, concrete and environment-friendly building materials.
Performance test
Test pieces of the magnesium castable are prepared according to the examples 1-6 and the comparative example, the test pieces are subjected to compression strength and breaking strength detection, the test pieces are divided into a plurality of groups, and the final data are averaged.
Test method
The test pieces were tested according to GB/T17669.3-1999 standard.
1. Measurement of flexural Strength
1. The main instrument is a brick and tile bending tester.
2. The test steps are as follows: (1) A group of test pieces are taken, the middle width and the thickness of each test piece are measured to be two respectively and are accurate to mm, and the average value of the test pieces is taken. (2) And adjusting the support span L of the material testing machine and the anti-bending movable support, wherein L is the total length of the test piece minus 40mm, namely the centers of the supports at two ends are 20mm away from the edge of the brick respectively. (3) The large plane of the test piece is horizontally placed on the anti-bending movable support, the pressurizing point is placed at the 1/2L position, and when the test piece has cracks or depressions, the cracks or the depressions are placed on the tensile surface. (4) The uniform loading speed is preferably 0.5MPa per second until the test piece is broken, and the breaking load is recorded.
2. Determination of compressive Strength
1. The main equipment is a press (1-200 KN).
2. The test steps are as follows: (1) And measuring the length and width of the connecting surface or the pressed surface of each test piece twice by using a straight steel ruler, and respectively taking the average value of the length and width to be accurate to 1mm. (2) The test piece is horizontally placed in the center of the pressurizing plate, and is loaded perpendicular to the pressure-bearing surface, so that the test piece is uniform and stable and cannot impact or vibrate. The loading speed is preferably 4kN/s until the test piece is destroyed, and the maximum destruction load is recorded.
Test results
The following table 1 shows the test results:
| example 1 | Example 2 | Example 3 | Comparative example | |
| Standard maintenance/day | 28 | 28 | 28 | 28 |
| Flexural strength/MPa | 4.9 | 5.3 | 5.5 | 4.1 |
| Compressive strength/MPa | 16.5 | 17.9 | 21.4 | 15.3 |
It can be seen by combining example 3 with the comparative example and table 1 that the presynthesized magnesium-aluminum-silicon water binding agent is added into a magnesium castable test piece subjected to standard curing for 28 days, so that the bending strength of the test piece is improved by 20-35%, and the compressive strength is improved by 22-40%, which shows that the bending and compressive properties of the magnesium castable test piece containing the magnesium-aluminum-silicon hydrate binding agent are obviously superior to those of the magnesium castable test piece without the magnesium-aluminum-silicon hydrate binding agent, and this also shows that the magnesium-aluminum-silicon water binding agent has a memory effect, the early bonding strength is improved, and the durability is excellent.
The specific embodiments are only for explaining the present application and are not limiting to the present application, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the claims of the present application.
Claims (8)
1. The magnesium castable is characterized by comprising the following raw materials in parts by weight: 18 to 26 weight percent of magnesium oxide fine powder, 1 to 3 weight percent of silicon dioxide micropowder, 1 to 3 weight percent of magnesium-aluminum-silicon hydrate bonding agent, 0.05 to 0.2 weight percent of polycarboxylate dispersant and the balance of magnesium oxide particles.
2. The preparation method of the magnesium castable is characterized by comprising the following preparation steps:
A. calculating and determining the proportion of each raw material component according to the total amount of the magnesium castable to be prepared, and weighing each raw material component;
B. b, uniformly mixing the magnesium oxide fine powder weighed in the step A, the silicon dioxide micro powder, the polycarboxylate dispersing agent, the magnesium oxide particles and the magnesium-aluminum-silicon hydrate binding agent to obtain a premix;
C. c, adding 4-6 wt% of water into the premix obtained in the step B, uniformly mixing to obtain a wet mixed material, and finally pouring and vibration molding the wet mixed material to obtain a pouring material;
D. and D, curing the casting material formed by vibration in the step C for 24-48 h at the temperature of 20-50 ℃ and the humidity of 70-80%, and preserving heat for 2-8 h at the temperature of 1300-1600 ℃ after drying.
3. The method for preparing the magnesium castable according to claim 2, wherein: the preparation method of the magnesium-aluminum-silicon hydrate binding agent comprises the following steps:
s1, according to the ratio of magnesium ions to aluminum ions in salt lake brine: adding silicate solution and aluminum ion solution into salt lake brine according to the molar concentration ratio of silicon ions of (0.6-2.0) to (1.0-3.0) to 1, and uniformly stirring to obtain mixed solution;
s2, standing the mixed solution obtained in the step S1 in a reaction kettle at the temperature of 80-150 ℃ for 10-91 hours, washing, and performing suction filtration to respectively obtain a solid product and a filtrate;
and S3, drying and grinding the solid product obtained in the step S2 at the temperature of 45-120 ℃ to obtain the magnesium-aluminum-silicon hydrate binding agent based on the salt lake brine.
4. A method for preparing a magnesium castable according to claim 3, wherein: and the silicate solution in the step S1 is one of potassium silicate solution, sodium silicate solution and lithium silicate solution.
5. A method for preparing a magnesium castable according to claim 3, wherein: in the step S1, the concentration of magnesium ions in the salt lake brine is 0.37-1.5 mol/L.
6. A method for preparing a magnesium castable according to claim 3, wherein: in the step S1, the aluminum ion solution is hydrated alumina or aluminum hydroxide.
7. A method for preparing a magnesium castable according to claim 3, wherein: and S2, evaporating and crystallizing the filtrate to obtain a byproduct, wherein the byproduct is one or two of potassium chloride, sodium chloride and lithium carbonate.
8. The application of the magnesia castable is characterized in that: the magnesium castable is used in the fields of magnesium refractory castable, concrete and environment-friendly building materials.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5968602A (en) * | 1997-08-13 | 1999-10-19 | North American Refractories Co. | Cement-free refractory castable system for wet process pumping/spraying |
| CN101544505A (en) * | 2009-03-20 | 2009-09-30 | 高树森 | Nano Al2O3 and MgO composite ceramic bonded spinel-magnesia fireproof casting material and preparation method thereof |
| CN103724026A (en) * | 2013-12-30 | 2014-04-16 | 江苏苏嘉集团新材料有限公司 | Magnesium carbon-based castable |
| CN104291840A (en) * | 2014-09-19 | 2015-01-21 | 长兴正豪耐火材料有限公司 | High-strength aluminum-magnesium castable for nickel iron ladle |
| CN108358213A (en) * | 2018-02-14 | 2018-08-03 | 武汉科技大学 | A kind of magnesium silicon hydrate bonding agent and preparation method thereof based on salt lake bittern |
| CN112592161A (en) * | 2020-12-29 | 2021-04-02 | 武汉科技大学 | Method for preparing magnesium-silicon water binding agent based on salt lake brine magnesium resource and application of magnesium-silicon water binding agent in magnesium refractory castable |
-
2022
- 2022-07-27 CN CN202210889137.1A patent/CN115321955A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5968602A (en) * | 1997-08-13 | 1999-10-19 | North American Refractories Co. | Cement-free refractory castable system for wet process pumping/spraying |
| CN101544505A (en) * | 2009-03-20 | 2009-09-30 | 高树森 | Nano Al2O3 and MgO composite ceramic bonded spinel-magnesia fireproof casting material and preparation method thereof |
| CN103724026A (en) * | 2013-12-30 | 2014-04-16 | 江苏苏嘉集团新材料有限公司 | Magnesium carbon-based castable |
| CN104291840A (en) * | 2014-09-19 | 2015-01-21 | 长兴正豪耐火材料有限公司 | High-strength aluminum-magnesium castable for nickel iron ladle |
| CN108358213A (en) * | 2018-02-14 | 2018-08-03 | 武汉科技大学 | A kind of magnesium silicon hydrate bonding agent and preparation method thereof based on salt lake bittern |
| CN112592161A (en) * | 2020-12-29 | 2021-04-02 | 武汉科技大学 | Method for preparing magnesium-silicon water binding agent based on salt lake brine magnesium resource and application of magnesium-silicon water binding agent in magnesium refractory castable |
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