CN116375485A - Aluminate cement combined unshaped refractory repair material and preparation method thereof - Google Patents
Aluminate cement combined unshaped refractory repair material and preparation method thereof Download PDFInfo
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- CN116375485A CN116375485A CN202310283132.9A CN202310283132A CN116375485A CN 116375485 A CN116375485 A CN 116375485A CN 202310283132 A CN202310283132 A CN 202310283132A CN 116375485 A CN116375485 A CN 116375485A
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- aluminate cement
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- 239000000463 material Substances 0.000 title claims abstract description 91
- 150000004645 aluminates Chemical class 0.000 title claims abstract description 59
- 239000004568 cement Substances 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229910004298 SiO 2 Inorganic materials 0.000 claims abstract description 31
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 27
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims abstract description 26
- 239000007767 bonding agent Substances 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 18
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004927 clay Substances 0.000 claims abstract description 10
- 229910021487 silica fume Inorganic materials 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims description 26
- 239000004033 plastic Substances 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 18
- 239000008399 tap water Substances 0.000 claims description 18
- 235000020679 tap water Nutrition 0.000 claims description 18
- 238000004806 packaging method and process Methods 0.000 claims description 12
- 239000011230 binding agent Substances 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 230000001680 brushing effect Effects 0.000 claims description 6
- 238000007865 diluting Methods 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 6
- 238000007667 floating Methods 0.000 claims description 6
- 235000011837 pasties Nutrition 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 210000002268 wool Anatomy 0.000 claims description 6
- 239000011819 refractory material Substances 0.000 abstract description 10
- 239000004570 mortar (masonry) Substances 0.000 abstract description 6
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 230000035939 shock Effects 0.000 description 4
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- ZMPZURBYCNDNBN-UHFFFAOYSA-K aluminum;calcium;phosphate Chemical compound [Al+3].[Ca+2].[O-]P([O-])([O-])=O ZMPZURBYCNDNBN-UHFFFAOYSA-K 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 239000001506 calcium phosphate Substances 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 2
- 229910000391 tricalcium phosphate Inorganic materials 0.000 description 2
- 235000019731 tricalcium phosphate Nutrition 0.000 description 2
- 229940078499 tricalcium phosphate Drugs 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009736 wetting Methods 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
-
- 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
- C04B2235/32—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
- C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
-
- 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
-
- 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
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The invention discloses an aluminate cement combined unshaped refractory repair material and a preparation method thereof, aiming at the characteristics of aluminate cement, the repair material is prepared from Al 2 O 3 ‑SiO 2 The refractory mortar for repairing is prepared from aggregate powder mixture of clinker, fine powder, guangxi clay, alpha alumina micropowder, silica fume and the like and bonding agents of aluminate cement, phosphoric acid solution and the like, and the bonding agents contained in the refractory mortar can form a new bonding phase with the aluminate refractory cement in the residual lining body, so that the residual lining body and the repairing material are effectively bonded, thereby avoiding the phenomenon of falling off again when the two layers of the coating are baked to high temperature, and prolonging the service life of the aluminate cement bonded unshaped refractory material lining body.
Description
Technical Field
The invention relates to the technical field of refractory materials, in particular to an aluminate cement combined unshaped refractory material repairing material and a preparation method thereof.
Background
Currently, aluminate cement incorporates Al in unshaped refractories 2 O 3 -SiO 2 The proportion of the castable, the spray coating, the ramming mass and the like is very high, and the aluminate cement is combined with Al 2 O 3 -SiO 2 The unshaped refractory materials such as castable, spray coating, ramming material and the like can cause the abrasion and scouring of the working surface to damage the working surface in the use process, and part of aluminate refractory cement is combined with Al 2 O 3 -SiO 2 Before the construction is finished and baked, the spraying repair material of the refractory castable has the phenomena of whiskering and surface pulverization due to the problems of air temperature, humidity, refractory impurities and the like, in particular to the combination of aluminate refractory cement and Al 2 O 3 -SiO 2 Is fire-resistantThe problem of the surface whiskering and pulverization of the casting material and the gunning material can not finish the acceptance of the interworks without repairing treatment, and the traditional method is to combine aluminate refractory cement with Al with the same material 2 O 3 -SiO 2 The refractory castable gunning mix powder is added with water and stirred for repairing, but contains aluminate cement combined with Al 2 O 3 -SiO 2 The refractory castable and gunning mix often cause the aluminate refractory cement to be insufficiently hydrated to form effective strength on the damaged surface due to the water absorption of the refractory residual lining, so that the repaired surface cannot be effectively combined with the residual lining, the phenomenon of two layers of coats appears, the two layers of coats fall off again when baked to high temperature, and if the aluminate combined Al is removed 2 O 3 -SiO 2 The aluminate cement is combined with unshaped refractory materials such as castable, spray coating, ramming mass and the like, so that loss and resource waste are caused.
Disclosure of Invention
Aiming at the problems, the invention provides an aluminate cement combined unshaped refractory repair material and a preparation method thereof, aiming at the characteristics of aluminate cement, al is prepared 2 O 3 -SiO 2 The refractory mortar for repairing is composed of the mixture of clinker aggregate powder and a binding agent, the binding agent contained in the refractory mortar can form a new composite salt of high-valence metal ions such as aluminum calcium phosphate, tricalcium phosphate and the like with calcium ions generated after hydration of aluminate refractory cement in the residual lining body to generate a coagulating bonding phase, so that the residual lining body and the repairing material are effectively bonded, the phenomenon that 'two layers of coats' are formed and fall off again when baked to high temperature is avoided, meanwhile, the effective bonding is formed between the residual lining body and the repairing material, the adhering rate of the repairing material is up to more than 99%, and the thermal shock stability of the repairing layer material is improved by more than 10 times compared with that of the aluminate cement bonded unshaped refractory material due to the existence of a phosphate bonding phase in the repairing layer, so that the service life of the aluminate cement bonded unshaped refractory material lining body is greatly improved.
The technical scheme adopted by the invention for realizing the purposes is that the aluminate cement combined unshaped refractory repairing material comprises the following raw material components in parts by weight： Al 2 O 3 -SiO 2 3-0mm particle size of clinker 35-55 parts and Al 2 O 3 -SiO 2 23-55 parts of clinker-200 mesh fine powder, 3-8 parts of Guangxi clay, 4-8 parts of alpha alumina micro powder and 3-6 parts of silica fume; the addition amount of aluminate cement is 8% of the total weight of the raw material, and the addition amount of phosphoric acid solution is 8-20% of the total weight of the raw material.
Wherein Al is 2 O 3 -SiO 2 Al of clinker 2 O 3 ≥45%；
Wherein, guangxi clay Al 2 O 3 More than or equal to 32 percent, and the granularity is-200 meshes;
wherein, alpha alumina micropowder Al 2 O 3 More than or equal to 98.5 percent, and the granularity is less than or equal to 2um;
wherein, the micro silicon powder SiO 2 ≥90%；
Wherein, aluminate cement Al 2 O 3 ≥70%；
Wherein the concentration of the phosphoric acid solution is 85%.
The preparation method of the aluminate cement combined unshaped refractory repairing material comprises the following steps:
step one, al is carried out 2 O 3 -SiO 2 3-0mm particles of clinker and Al 2 O 3 -SiO 2 The clinker-200 mesh fine powder, guangxi clay, alpha alumina micro powder and silica fume are added into a vertical forced mixer to be mixed for 2-3min after being weighed according to the weight parts, then 4 percent phosphoric acid solution and 3-4 percent clean tap water which are all the weight of the raw materials are added into the mixture to be mixed for 6-8min, and the mixture is filled into a woven bag with an inner film to be packed as a repairing material;
weighing aluminate cement which is 8% of the total weight of the raw materials, putting the aluminate cement into a plastic bag for fastening, and putting the plastic bag into a woven bag with an inner film for packaging to serve as a repairing material bonding agent C;
step three, preparing a phosphoric acid solution with the concentration of 85% according to 4-16% of the total weight of the original repairing material, and filling the phosphoric acid solution into a plastic bucket to serve as a repairing material bonding agent P;
step four, the surface of the damaged working surface is roughened with a steel brush to clean the loose or eroded layer, and the surface floating ash is blown clean with high-pressure air;
fifthly, diluting a proper amount of repairing material binding agent P into a solution with the concentration of 60% by using clean tap water, brushing the diluted solution on the surface of the cleaned working surface by using wool or spraying the diluted solution on the surface of the cleaned working surface by using a spray gun;
step six, opening the packaging bags of the repairing material and the repairing material bonding agent C, adding a vertical stirrer to stir for 3-4 minutes, then adding the repairing material bonding agent P, stirring for 6-8 minutes, and slowly adding clean tap water accounting for less than 10% of the total weight of the repairing material to form a viscous paste in the stirring process;
and step seven, smearing the stirred pasty repairing material on the surface of the damaged working surface by using a spatula.
The invention uses Al 2 O 3 -SiO 2 The refractory mortar for repairing is composed of the mixture of clinker aggregate powder and a binding agent, the binding agent contained in the refractory mortar can form a new composite salt of high-valence metal ions such as aluminum calcium phosphate, tricalcium phosphate and the like with calcium ions generated after hydration of aluminate refractory cement in the residual lining body to generate a coagulating bonding phase, so that the residual lining body and the repairing material are effectively bonded, the phenomenon that 'two layers of coats' are formed and fall off again when baked to high temperature is avoided, meanwhile, the effective bonding is formed between the residual lining body and the repairing material, the adhering rate of the repairing material is up to more than 99%, and the thermal shock stability of the repairing layer material is improved by more than 10 times compared with that of the aluminate cement bonded unshaped refractory material due to the existence of a phosphate bonding phase in the repairing layer, so that the service life of the aluminate cement bonded unshaped refractory material lining body is greatly improved.
The beneficial effects are that: the invention uses Al 2 O 3 -SiO 2 The repairing material composed of clinker aggregate, powder mixture and binding agent has the characteristics of high bonding strength, long service life, small environmental pollution, easy sintering, good thermal shock resistance, strong adhesive force, good compatibility with the residual lining, good dispersibility, fluidity, wetting and wrapping property, adhesion, thermal stability and the like, can effectively repair the residual unshaped refractory lining of thermal equipment, has the repairing material adhesion rate of more than 99 percent, has the thermal shock stability improved by more than 10 times, and greatly prolongs the service life of the aluminate cement combined unshaped refractory lining.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The aluminate cement combined unshaped refractory repairing material comprises the following components in parts by weight:
Al 2 O 3 the addition amount of aluminate cement is more than or equal to 70 percent and is 8 percent of the total weight of the raw material; the addition amount of the phosphoric acid solution with the concentration of 85 percent is 8-20 percent of the total weight of the raw material.
The preparation method comprises the following steps:
step one, al is carried out 2 O 3 -SiO 2 3-0mm particles of clinker and Al 2 O 3 -SiO 2 The clinker-200 mesh fine powder, guangxi clay, alpha alumina micro powder and silica fume are added into a vertical forced mixer to be mixed for 2-3min after being weighed according to the weight parts, then 4 percent phosphoric acid solution and 3-4 percent clean tap water which are all the weight of the raw materials are added into the mixture to be mixed for 6-8min, and the mixture is filled into a woven bag with an inner film to be packed as a repairing material;
weighing aluminate cement which is 8% of the total weight of the raw materials, putting the aluminate cement into a plastic bag for fastening, and putting the plastic bag into a woven bag with an inner film for packaging to serve as a repairing material bonding agent C;
step three, preparing a phosphoric acid solution with the concentration of 85% according to 12-14% of the total weight of the original repairing material, and filling the phosphoric acid solution into a plastic bucket to serve as a repairing material bonding agent P;
step four, the surface of the damaged working surface is roughened with a steel brush to clean the loose or eroded layer, and the surface floating ash is blown clean with high-pressure air;
fifthly, diluting a proper amount of repairing material binding agent P into a solution with the concentration of 60% by using clean tap water, brushing the diluted solution on the surface of the cleaned working surface by using wool or spraying the diluted solution on the surface of the cleaned working surface by using a spray gun;
step six, opening the packaging bags of the repairing material and the repairing material bonding agent C, adding a vertical stirrer to stir for 3-4 minutes, then adding the repairing material bonding agent P, stirring for 6-8 minutes, and slowly adding clean tap water accounting for 6% of the total weight of the repairing material to form a viscous paste in the stirring process;
and step seven, smearing the stirred pasty repairing material on the surface of the damaged working surface by using a spatula.
Example 2
The aluminate cement combined unshaped refractory repairing material comprises the following components in parts by weight:
Al 2 O 3 the addition amount of aluminate cement is more than or equal to 70 percent and is 8 percent of the total weight of the raw material; the addition amount of the phosphoric acid solution with the concentration of 85 percent is 8-20 percent of the total weight of the raw material.
The preparation method comprises the following steps:
step one, al is carried out 2 O 3 -SiO 2 3-0mm particles of clinker and Al 2 O 3 -SiO 2 The clinker-200 mesh fine powder, guangxi clay, alpha alumina micro powder and silica fume are added into a vertical forced mixer to be mixed for 2-3min after being weighed according to the weight parts, then 4 percent phosphoric acid solution and 3-4 percent clean tap water which are all the weight of the raw materials are added into the mixture to be mixed for 6-8min, and the mixture is filled into a woven bag with an inner film to be packed as a repairing material;
weighing aluminate cement which is 8% of the total weight of the raw materials, putting the aluminate cement into a plastic bag for fastening, and putting the plastic bag into a woven bag with an inner film for packaging to serve as a repairing material bonding agent C;
step three, preparing a phosphoric acid solution with the concentration of 85% according to 8-10% of the total weight of the original repairing material, and filling the phosphoric acid solution into a plastic bucket to serve as a repairing material bonding agent P;
step four, the surface of the damaged working surface is roughened with a steel brush to clean the loose or eroded layer, and the surface floating ash is blown clean with high-pressure air;
fifthly, diluting a proper amount of repairing material binding agent P into a solution with the concentration of 60% by using clean tap water, brushing the diluted solution on the surface of the cleaned working surface by using wool or spraying the diluted solution on the surface of the cleaned working surface by using a spray gun;
step six, opening the packaging bags of the repairing material and the repairing material bonding agent C, adding a vertical stirrer to stir for 3-4 minutes, then adding the repairing material bonding agent P, stirring for 6-8 minutes, and slowly adding clean tap water accounting for 9% of the total weight of the repairing material to form a viscous paste in the stirring process;
and step seven, smearing the stirred pasty repairing material on the surface of the damaged working surface by using a spatula.
Example 3
The aluminate cement combined unshaped refractory repairing material comprises the following components in parts by weight:
Al 2 O 3 the addition amount of aluminate cement is more than or equal to 70 percent and is 8 percent of the total weight of the raw material; the addition amount of the phosphoric acid solution with the concentration of 85 percent is 8-20 percent of the total weight of the raw material.
The preparation method comprises the following steps:
step one, al is carried out 2 O 3 -SiO 2 3-0mm particles of clinker and Al 2 O 3 -SiO 2 The clinker-200 mesh fine powder, guangxi clay, alpha alumina micro powder and silica fume are added into a vertical forced mixer to be mixed for 2-3min after being weighed according to the weight parts, then 4 percent phosphoric acid solution and 3-4 percent clean tap water which are all the weight of the raw materials are added into the mixture to be mixed for 6-8min, and the mixture is filled into a woven bag with an inner film to be packed as a repairing material;
weighing aluminate cement which is 8% of the total weight of the raw materials, putting the aluminate cement into a plastic bag for fastening, and putting the plastic bag into a woven bag with an inner film for packaging to serve as a repairing material bonding agent C;
step three, preparing a phosphoric acid solution with the concentration of 85% according to 15-16% of the total weight of the original repairing material, and filling the phosphoric acid solution into a plastic bucket to serve as a repairing material bonding agent P;
step four, the surface of the damaged working surface is roughened with a steel brush to clean the loose or eroded layer, and the surface floating ash is blown clean with high-pressure air;
fifthly, diluting a proper amount of repairing material binding agent P into a solution with the concentration of 60% by using clean tap water, brushing the diluted solution on the surface of the cleaned working surface by using wool or spraying the diluted solution on the surface of the cleaned working surface by using a spray gun;
step six, opening the packaging bags of the repairing material and the repairing material bonding agent C, adding a vertical stirrer to stir for 3-4 minutes, then adding the repairing material bonding agent P, stirring for 6-8 minutes, and slowly adding clean tap water accounting for 4% of the total weight of the repairing material to form a viscous paste in the stirring process;
and step seven, smearing the stirred pasty repairing material on the surface of the damaged working surface by using a spatula.
Example 4
The aluminate cement combined unshaped refractory repairing material comprises the following components in parts by weight:
Al 2 O 3 the addition amount of aluminate cement is more than or equal to 70 percent and is 8 percent of the total weight of the raw material; the addition amount of the phosphoric acid solution with the concentration of 85 percent is 8-20 percent of the total weight of the raw material;
the preparation method comprises the following steps:
step one, al is carried out 2 O 3 -SiO 2 3-0mm particles of clinker and Al 2 O 3 -SiO 2 The clinker-200 mesh fine powder, guangxi clay, alpha alumina micro powder and silica fume are added into a vertical forced mixer to be mixed for 2-3min after being weighed according to the weight parts, then 4 percent phosphoric acid solution and 3-4 percent clean tap water which are all the weight of the raw materials are added into the mixture to be mixed for 6-8min, and the mixture is filled into a woven bag with an inner film to be packed as a repairing material;
weighing aluminate cement which is 8% of the total weight of the raw materials, putting the aluminate cement into a plastic bag for fastening, and putting the plastic bag into a woven bag with an inner film for packaging to serve as a repairing material bonding agent C;
step three, preparing a phosphoric acid solution with the concentration of 85% according to 10-12% of the total weight of the original repairing material, and filling the phosphoric acid solution into a plastic bucket to serve as a repairing material bonding agent P;
step four, the surface of the damaged working surface is roughened with a steel brush to clean the loose or eroded layer, and the surface floating ash is blown clean with high-pressure air;
fifthly, diluting a proper amount of repairing material binding agent P into a solution with the concentration of 60% by using clean tap water, brushing the diluted solution on the surface of the cleaned working surface by using wool or spraying the diluted solution on the surface of the cleaned working surface by using a spray gun;
step six, opening the packaging bags of the repairing material and the repairing material bonding agent C, adding a vertical stirrer to stir for 3-4 minutes, then adding the repairing material bonding agent P, stirring for 6-8 minutes, and slowly adding clean tap water accounting for 8% of the total weight of the repairing material to form a viscous paste in the stirring process;
and step seven, smearing the stirred pasty repairing material on the surface of the damaged working surface by using a spatula.
Claims (7)
1. The aluminate cement combined unshaped refractory repairing material is characterized by comprising the following raw material components in parts by weight: al (Al) 2 O 3 -SiO 2 3-0mm particle size of clinker 35-55 parts and Al 2 O 3 -SiO 2 23-55 parts of clinker-200 mesh fine powder, 3-8 parts of Guangxi clay, 4-8 parts of alpha alumina micro powder and 3-6 parts of silica fume; the addition amount of aluminate cement is 8% of the total weight of the raw material, and the addition amount of phosphoric acid solution is 8-20% of the total weight of the raw material.
2. The aluminate cement bonded unshaped refractory repair batch according to claim 1, wherein: al (Al) 2 O 3 -SiO 2 Al of clinker 2 O 3 ≥45%。
3. A according to claim 1An aluminate cement combined unshaped refractory repairing material is characterized in that: guangxi Clay Al 2 O 3 More than or equal to 32 percent and the granularity is-200 meshes.
4. The aluminate cement bonded unshaped refractory repair batch according to claim 1, wherein: alpha alumina micropowder Al 2 O 3 More than or equal to 98.5 percent, and the granularity is less than or equal to 2um.
5. The aluminate cement bonded unshaped refractory repair batch according to claim 1, wherein: silica fume SiO 2 ≥90%。
6. The aluminate cement bonded unshaped refractory repair batch according to claim 1, wherein: aluminate cement Al 2 O 3 More than or equal to 70 percent; the concentration of the phosphoric acid solution was 85%.
7. The preparation method of the aluminate cement combined unshaped refractory repairing material is characterized by comprising the following steps of:
step one, al is carried out 2 O 3 -SiO 2 3-0mm particles of clinker and Al 2 O 3 -SiO 2 The clinker-200 mesh fine powder, guangxi clay, alpha alumina micro powder and silica fume are added into a vertical forced mixer to be mixed for 2-3min after being weighed according to the weight parts, then 4 percent phosphoric acid solution and 3-4 percent clean tap water which are all the weight of the raw materials are added into the mixture to be mixed for 6-8min, and the mixture is filled into a woven bag with an inner film to be packed as a repairing material;
weighing aluminate cement which is 8% of the total weight of the raw materials, putting the aluminate cement into a plastic bag for fastening, and putting the plastic bag into a woven bag with an inner film for packaging to serve as a repairing material bonding agent C;
step three, preparing a phosphoric acid solution with the concentration of 85% according to 4-16% of the total weight of the original repairing material, and filling the phosphoric acid solution into a plastic bucket to serve as a repairing material bonding agent P;
step four, the surface of the working surface to be repaired is roughened and cleaned up by a steel brush, and floating ash on the surface is blown clean by high-pressure air;
fifthly, diluting a proper amount of repairing material binding agent P into a solution with the concentration of 60% by using clean tap water, brushing the diluted solution on the surface of the cleaned working surface by using wool or spraying the diluted solution on the surface of the cleaned working surface by using a spray gun;
step six, opening the packaging bags of the repairing material and the repairing material bonding agent C, adding a vertical stirrer to stir for 3-4 minutes, then adding the repairing material bonding agent P, stirring for 6-8 minutes, and slowly adding clean tap water accounting for less than 10% of the total weight of the repairing material to form a viscous paste in the stirring process;
and step seven, smearing the stirred pasty repairing material on the surface of the damaged working surface by using a spatula.
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