CN106518099A - Acid/alkali-corrosion-resistant refractory brick and preparation method thereof - Google Patents
Acid/alkali-corrosion-resistant refractory brick and preparation method thereof Download PDFInfo
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- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/30—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing magnesium cements or similar cements
- C04B28/32—Magnesium oxychloride cements, e.g. Sorel cement
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- 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
- C04B35/16—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 silicates other than clay
- C04B35/18—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 silicates other than clay rich in aluminium oxide
- C04B35/185—Mullite 3Al2O3-2SiO2
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00431—Refractory materials
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2084—Thermal shock resistance
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/23—Acid resistance, e.g. against acid air or rain
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- 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
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/442—Carbonates
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Abstract
The invention discloses an acid/alkali-corrosion-resistant refractory brick and a preparation method thereof. The acid/alkali-corrosion-resistant refractory brick is prepared from the following raw materials in parts by weight: 25-35 parts of aluminosilicate waste residue, 5-10 parts of titanium oxide, 6-11 parts of alkali lignin, 18-26 parts of facellite, 30-40 parts of brine sludge, 20-30 parts of bischofite, 14-22 parts of waste crucible, 16-24 parts of building rejected brick, 21-29 parts of boiler slag, 13-21 parts of magnesite, 10-20 parts of bank gravel, 15-25 parts of graphite tailing, 9-18 parts of stainless steel waste and 8-13 parts of polyethyleneglycol. By using the brine sludge, bischofite, magnesite and other raw materials instead of the traditional clay as the adhesive in combination with the interactions among the titanium oxide, building rejected brick, stainless steel waste and other raw materials, the prepared refractory brick has the advantages of high mechanical strength, acid/alkali corrosion resistance, heat/sound insulation, abrasion resistance and the like, and is suitable for heat engineering equipment in the acid/alkali environment.
Description
Technical field
The present invention relates to a kind of acid-alkali-corrosive-resisting refractory brick and preparation method thereof, belongs to fire resisting material field.
Background technology
All materials with opposing high temperature and physics chemical action produced at high temperature are referred to as refractory material.Fire resisting
Material is widely used in the national economy such as metallurgy, chemical industry, oil, machine-building, silicate, power, boiler, light industry, electric power, military project
Every field, be to ensure that above-mentioned industry production run and technology develop requisite stock, produce in hot industry
Irreplaceable important function is played in development.Refractory material is generally divided into two kinds, i.e. amorphous refractory and sizing fire resisting
Material.Refractory material of wherein shaping refers generally to refractory brick, and its shape has standard rule, it is also possible to builds as needed
Work.
In recent years, domestic refractory brick production technology quickly grows, and occurs in that species is various, different properties fire resistings on market
Brick.China Patent No. is：200710062457.5 patent of invention disclose a kind of silica heat-proof firebrick, refractory brick of the present invention
By Silicon stone fine powder 81-85%, perlite 15-19%, the additional following adjuvant for accounting for above-mentioned main material gross weight：Iron scale powder 0.45-
0.55%, cement 0.9-1.1%, lime cream 6.5-7.5%, paper pulp 1.95-2.2% are constituted, and preparation technology is：Silicon stone is thin
Powder, perlite are proportionally added in wet stone roller, are subsequently adding iron scale powder, after cement dry milling 1-2 minute, added and account for main material gross weight
The water of 1.8-2.2%, is subsequently adding lime cream, rolls 10-15 minutes, is eventually adding paper pulp, rolls 10-15 minutes, goes out to grind, into
Type base.Although existing clay insulating refractory block is solved using refractory brick obtained in above-mentioned raw materials and technique and there is loading change
Easily shrink under shape temperature low and high temperature, the defect such as thermal conductivity is larger, heat insulation effect is bad, but its fire resistance and acid-alkali-corrosive-resisting
Property compared with external refractory brick, still suffer from larger gap, it is impossible to meet the demand of export market.
The content of the invention
Present invention aims to prior art is not enough, there is provided a kind of acid-alkali-corrosive-resisting refractory brick and its preparation side
Method.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of acid-alkali-corrosive-resisting refractory brick, is made up of the raw material of following weight portion：Aluminosilicate waste residue 25-35, sub- oxidation
Titanium 5-10, alkali lignin 6-11, kaliophilite 18-26, brine sludge 30-40, bischofite 20-30, useless crucible 14-22, the useless brick 16- of building
24th, boiler slag 21-29, magnesia 13-21, cobble 10-20, graphite tailings 15-25, rustless steel waste material 9-18, poly- second two
Alcohol 8-13.
A kind of preparation method of acid-alkali-corrosive-resisting refractory brick, is made up of the following steps：
(1) by aluminosilicate waste residue, kaliophilite, useless crucible, boiler slag, graphite tailings mix homogeneously, crush, cross 80-
120 mesh sieves, 820-870 DEG C of calcining 1-2h are cooled to room temperature, 300-400r/min dry ball milling 25-35min, then according to solid
Liquor ratio 1：Powder after ball milling is added in the hydrochloric acid solution that mass fraction is 35% by 4-6, and heating in water bath is protected to 65-75 DEG C
Warm macerating steeps 3-5h, filters when naturally cooling to less than 50 DEG C, and filtering residue is continued to employ, and filtrate adds the sodium hydroxide that molar concentration is 5mol/L
Solution to pH be 13-14, filter, filtrate be passed through carbon dioxide to pH be 8.5-9.5 when, close carbon dioxide, stand it is old
Change 3-4h, filter, residue washing is clean, drying, 800-850 DEG C of temperature calcining 1-2h are cooled to room temperature, stand-by；
(2) according to solid-to-liquid ratio 1：It is molten that the filtering residue that step (1) is continued to employ is added to the sodium hydroxide that mass fraction is 15% by 3-5
In liquid, 80-90 DEG C is heated to, heat-insulation soaking 1-2h is filtered when naturally cooling to less than 50 DEG C, and filtrate is passed through carbon dioxide
When being 8-9 to pH, carbon dioxide is closed, still aging 2-3h is filtered, and residue washing is clean, drying, 520-560 DEG C of temperature calcining
2-3h, is cooled to room temperature, stand-by；
(3) raw material obtained in step (1) is mixed homogeneously with raw material obtained in step (2), is subsequently adding equivalent to mixing
The sodium carbonate of the sodium sulfate and 40-50% of amount of substance 50-60%, 500-700r/min dry ball milling 15-20min, 1080-1160
DEG C calcining 2-4h, be cooled to room temperature, be added in appropriate distilled water, heating in water bath to 70-80 DEG C, stir 4-7min, filter,
Residue washing, totally, drying obtains refractory matter；
(4) by sub- titanium oxide, bischofite, building useless brick, cobble, rustless steel waste material mix homogeneously, crush, cross 50-
Dry-mixed, mixing 6-9min is carried out after 100 mesh sieves with refractory matter obtained in step (3), appropriate water is subsequently adding, and is added remainder
Raw material carries out wet mixing, mixes 4-7min；
(5) will be compressing in compound addition mould obtained in step (4), briquetting pressure is 18-24MPa, will
Base substrate after molding stands 2-3h, then steam press maintenance, and steaming pressuring curing system is intensification 2-4h, constant temperature 5-8h, and lower the temperature 1-3h, steams
Pressure temperature is 180-200 DEG C, then natural ring maintenance.
Beneficial effects of the present invention：
(1) present invention is by extracting oxidation from the raw material such as aluminosilicate waste residue, useless crucible, boiler slag, graphite tailings
Aluminum and silicon dioxide, then calcine in the fused salt of sodium sulfate and sodium carbonate, can obtain resistance to mullite as main component
Fire material, the refractory matter are added in brick, can greatly improve the fire resistance of refractory brick so that refractory brick remains to keep at high temperature
Excellent combination property, while realizing the solid slag such as aluminosilicate waste residue, useless crucible, boiler slag, graphite tailings again
Recycling, with important economic benefit and social benefit；
(2) raw materials such as brine sludge, bischofite, magnesia be present invention employs and replaces traditional clay as binding agent, with
The raw material such as sub- titanium oxide, building useless brick, rustless steel waste material is used in conjunction with each other, make obtained refractory brick have high mechanical strength,
Acid-alkali-corrosive-resisting, thermal acoustic insulation, it is wear-resistant the advantages of, the Thermal Equipment being suitable under acid or alkali environment.
Specific embodiment
A kind of acid-alkali-corrosive-resisting refractory brick, is made up of the raw material of following weight (kg)：Aluminosilicate waste residue 30, sub- titanium oxide
8th, the useless brick 20 of alkali lignin 9, kaliophilite 22, brine sludge 35, bischofite 25, useless crucible 18, building, boiler slag 25, magnesia 17,
Cobble 5, graphite tailings 20, rustless steel waste material 12, Polyethylene Glycol 10.
A kind of preparation method of acid-alkali-corrosive-resisting refractory brick, is made up of the following steps：
(1) by aluminosilicate waste residue, kaliophilite, useless crucible, boiler slag, graphite tailings mix homogeneously, crush, cross 100
Mesh sieve, 850 DEG C of calcining 1.5h, is cooled to room temperature, 350r/min dry ball milling 30min, then according to solid-to-liquid ratio 1：5 by after ball milling
Powder be added in the hydrochloric acid solution that mass fraction is 35%, to 70 DEG C, heat-insulation soaking 4h naturally cools to 50 to heating in water bath
Filter when below DEG C, filtering residue is continued to employ, it is 13 to pH that filtrate adds the sodium hydroxide solution that molar concentration is 5mol/L, is filtered, filtrate
Be passed through carbon dioxide to pH be 9 when, close carbon dioxide, still aging 3.5h is filtered, and residue washing is clean, drying,
820 DEG C of temperature calcining 1.5h, are cooled to room temperature, stand-by；
(2) according to solid-to-liquid ratio 1：4 the filtering residue that step (1) is continued to employ is added to the sodium hydroxide solution that mass fraction is 15%
In, 85 DEG C are heated to, heat-insulation soaking 1.5h is filtered when naturally cooling to less than 50 DEG C, and filtrate is passed through carbon dioxide to pH
For 8.5 when, close carbon dioxide, still aging 2.5h is filtered, and residue washing is clean, drying, 540 DEG C of temperature calcining 2.5h, cooling
It is to room temperature, stand-by；
(3) raw material obtained in step (1) is mixed homogeneously with raw material obtained in step (2), is subsequently adding equivalent to mixing
The sodium sulfate of amount of substance 55% and 45% sodium carbonate, 600r/min dry ball milling 18min, 1140 DEG C of calcining 3h, are cooled to room
Temperature, is added in appropriate distilled water, and heating in water bath stirs 5min to 75 DEG C, filters, residue washing, and totally, drying is obtained
Refractory matter；
(4) by sub- titanium oxide, bischofite, building useless brick, cobble, rustless steel waste material mix homogeneously, crush, cross 80 mesh
Dry-mixed, mixing 8min is carried out after sieve with refractory matter obtained in step (3), appropriate water is subsequently adding, and is added remaining material to enter
Row wet mixing, mixes 6min；
(5) will be compressing in compound addition mould obtained in step (4), briquetting pressure is 20MPa, by molding
Base substrate afterwards stands 2.5h, then steam press maintenance, and steaming pressuring curing system is intensification 3h, constant temperature 6h, and lower the temperature 2h, and steam pressure temperature is
190 DEG C, then natural ring maintenance.
The performance test results of refractory brick obtained in above-described embodiment are as follows compared with external refractory brick performance parameter
Shown in table：
| External refractory brick | The refractory brick of above-described embodiment production | |
| Refractoriness (DEG C) | 1760 | 1790 |
| Resistance to 20% hydrochloric acid solution (70 DEG C, 96h) | Corrosion-free phenomenon | Corrosion-free phenomenon |
| Resistance to 30% sodium hydroxide solution (70 DEG C, 96h) | Corrosion-free phenomenon | Corrosion-free phenomenon |
Claims (2)
1. a kind of acid-alkali-corrosive-resisting refractory brick, it is characterised in that be made up of the raw material of following weight portion：Aluminosilicate waste residue 25-
35th, sub- titanium oxide 5-10, alkali lignin 6-11, kaliophilite 18-26, brine sludge 30-40, bischofite 20-30, useless crucible 14-22, build
Build useless brick 16-24, boiler slag 21-29, magnesia 13-21, cobble 10-20, graphite tailings 15-25, rustless steel waste material 9-
18th, Polyethylene Glycol 8-13.
2. a kind of preparation method of acid-alkali-corrosive-resisting refractory brick as claimed in claim 1, it is characterised in that by the following steps group
Into：
（1）By aluminosilicate waste residue, kaliophilite, useless crucible, boiler slag, graphite tailings mix homogeneously, crush, cross 80-120 mesh
Sieve, 820-870 DEG C of calcining 1-2h, is cooled to room temperature, 300-400r/min dry ball milling 25-35min, then according to solid-to-liquid ratio 1：
Powder after ball milling is added in the hydrochloric acid solution that mass fraction is 35% by 4-6, heating in water bath to 65-75 DEG C, heat-insulation soaking 3-
5h, filters when naturally cooling to less than 50 DEG C, and filtering residue is continued to employ, and filtrate adds sodium hydroxide solution that molar concentration is 5mol/L to pH
For 13-14, filter, filtrate be passed through carbon dioxide to pH be 8.5-9.5 when, close carbon dioxide, still aging 3-4h, mistake
Filter, residue washing are clean, drying, 800-850 DEG C of temperature calcining 1-2h, are cooled to room temperature, stand-by；
（2）According to solid-to-liquid ratio 1：3-5 is by step（1）The filtering residue continued to employ is added in the sodium hydroxide solution that mass fraction is 15%,
80-90 DEG C is heated to, heat-insulation soaking 1-2h is filtered when naturally cooling to less than 50 DEG C, and filtrate is passed through carbon dioxide to pH
For 8-9 when, close carbon dioxide, still aging 2-3h is filtered, and residue washing is clean, drying, 520-560 DEG C of temperature calcining 2-3h,
Room temperature is cooled to, it is stand-by；
（3）By step（1）Obtained raw material and step（2）Obtained raw material mix homogeneously, is subsequently adding equivalent to compounding substances
The sodium carbonate of the sodium sulfate and 40-50% of amount 50-60%, 500-700r/min dry ball milling 15-20min, 1080-1160 DEG C of calcining
2-4h, is cooled to room temperature, is added in appropriate distilled water, and heating in water bath stirs 4-7min to 70-80 DEG C, filters, and filtering residue is washed
Wash, totally, drying obtains refractory matter；
（4）By sub- titanium oxide, bischofite, building useless brick, cobble, rustless steel waste material mix homogeneously, crush, cross 50-100 mesh
With step after sieve（3）Obtained refractory matter carries out dry-mixed, mixing 6-9min, is subsequently adding appropriate water, and adds remaining material
Wet mixing is carried out, mixes 4-7min；
（5）By step（4）Compressing in obtained compound addition mould, briquetting pressure is 18-24MPa, by molding
Base substrate afterwards stands 2-3h, then steam press maintenance, and steaming pressuring curing system is intensification 2-4h, constant temperature 5-8h, and lower the temperature 1-3h, steam pressure temperature
Spend for 180-200 DEG C, then natural ring maintenance.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107573028A (en) * | 2017-09-22 | 2018-01-12 | 江西萍乡龙发实业股份有限公司 | The method for producing acidproof brick with building and the useless powder tail powder of household china |
| WO2020069590A1 (en) * | 2018-10-05 | 2020-04-09 | Braskem S.A. | Ceramic coating composition, method for obtaining a ceramic coating base mass, use of the ceramic coating composition and ceramic panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102211164A (en) * | 2011-05-13 | 2011-10-12 | 无锡德乾能源设备有限公司 | Application of refractory brick in casting field |
| CN105948703A (en) * | 2016-04-06 | 2016-09-21 | 安徽宏发节能设备有限公司 | Corrosion-resistant sintered hollow clay brick and manufacturing method thereof |
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2016
- 2016-10-10 CN CN201610884562.6A patent/CN106518099A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102211164A (en) * | 2011-05-13 | 2011-10-12 | 无锡德乾能源设备有限公司 | Application of refractory brick in casting field |
| CN105948703A (en) * | 2016-04-06 | 2016-09-21 | 安徽宏发节能设备有限公司 | Corrosion-resistant sintered hollow clay brick and manufacturing method thereof |
Non-Patent Citations (1)
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| 丁军等: "熔盐介质中制备镁橄榄石轻质材料的机理", 《硅酸盐通报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107573028A (en) * | 2017-09-22 | 2018-01-12 | 江西萍乡龙发实业股份有限公司 | The method for producing acidproof brick with building and the useless powder tail powder of household china |
| WO2020069590A1 (en) * | 2018-10-05 | 2020-04-09 | Braskem S.A. | Ceramic coating composition, method for obtaining a ceramic coating base mass, use of the ceramic coating composition and ceramic panel |
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