CN107793166A - Zn Rotary Kiln electric smelting is in conjunction with alumina magnesia-chrome fire brick and preparation method thereof - Google Patents
Zn Rotary Kiln electric smelting is in conjunction with alumina magnesia-chrome fire brick and preparation method thereof Download PDFInfo
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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
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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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
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
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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
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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
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3241—Chromium oxides, chromates, or oxide-forming salts thereof
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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
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
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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
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
Abstract
The present invention is directed to the problem of Zn Rotary Kilns Mg-al-cr Refractories are present in the prior art, there is provided a kind of Zn Rotary Kilns electric smelting is in conjunction with alumina magnesia-chrome fire brick and preparation method thereof.The refractory brick is electric smelting aluminium magnesia-chrome sand 78 ~ 96% by percentage by weight, MgO fine powders 0 ~ 2%, Cr2O3Superfine powder 0 ~ 5%, active alpha Al2O3Superfine powder 0 ~ 20% forms, then the complexing magnalium cementing agent of 2 5% water of extra addition and 3 8% percentage by weights is as bonding agent.Chromium content is low in the alumina magnesia-chrome fire brick, while possesses good resistance to slag and thermal shock resistance, service life length.The preparation method technique is simple, is produced using existing equipment.
Description
Technical field
The invention belongs to technical field of refractory materials, more particularly to a kind of Zn Rotary Kilns electric smelting is in conjunction with magnalium chromium fire resisting
Brick and preparation method thereof.
Background technology
Zn Rotary Kilns are a kind of equipment most commonly used in non-ferrous metal metallurgy technology, and Rotary Kiln processing is leached containing zinc
Slag be by leached mud at a high temperature of 1373K ~ 1573K by valuable metals such as zinc therein, lead, indium, germanium by Carbon monoxide reduction
Flue gas is volatized into metal, the metal oxides such as zinc oxide are oxidized in flue gas and leave Rotary Kiln with flue gas,
It is captured down in cooling and dust collecting system, is collected into dust-precipitator, is that metal product is improved in nonferrous metallurgical process
One effective means of quality and performance.
Zn Rotary Kilns are because high temperature, thermal stress act on, and are continuously in and change in the frequently atmosphere of Strong oxdiative-reduction
Work, the erosion of simultaneous metal vapors and the violent scour of leached mud, so the requirement to inner lining refractory is very high,
Not only require that it has resistance to elevated temperatures but also requires good anti-scour property, heat-resistant knocking stability energy and antiscour
Performance etc..Magnesite-chrome brick has refractoriness height, elevated temperature strength is big, alkali resistance scouring is extremely strong（Also there is certain acid-resisting slag to invade
The ability of erosion）, the excellent applied at elevated temperature performance such as thermal shock resistance is excellent, be always domestic and international Zn Rotary Kilns inner lining material head
Choosing.
Zn Rotary Kiln magnesian-chrome efractoys using mainly by three for the use of limited：One side refractory material exists
Damage enters in leached mud during use, and the chromium in discarded kiln slag pollutes the environment；Magnesium chromium after another aspect use gives up
Brick exposure produces water miscible Cr in atmosphere6+, serious environmental pollution, especially polluted source can be caused；Another further aspect, magnesium chromium
The service life of brick is short, and slag-resistant aggressivity and heat resistanceheat resistant stripping are poor, and thermal fatigue resistance is poor.At present, phase has all been put into effect in home and abroad
Close the regulation that limitation Cr2O3-containing refractories use.Therefore develop that a kind of chromium content is few, the Zn Rotary Kilns of anti-erosion resistance to thermal shock are used
Novel aluminum-magnesium chrome brick is imperative.
At present, H.J. Klischat, P. Bartha, wait to the magnesium ferrochrome brick progress applied to Zn Rotary Kiln clinkering zones
Research.Compared with traditional magnesia-alumina-chromia brick, magnesium ferrochrome brick shows the strong advantage of identical thermal shock resistance.Sharp crystalline substance is added simultaneously
The application of stone is beneficial to improve service life, and the introducing of spinelle effectively improves the thermal shock resistance of magnesium ferrochrome brick.But make
Still do not reach requirement with the life-span, be not suitable for being widely popularized use.
The content of the invention
The present invention is directed to the problem of Zn Rotary Kilns magnesian-chrome efractoy is present in the prior art, there is provided a kind of Zn
Rotary Kiln electric smelting is in conjunction with alumina magnesia-chrome fire brick and preparation method thereof.Chromium content is low in the alumina magnesia-chrome fire brick, possesses simultaneously
Good resistance to slag and thermal shock resistance, service life length.The preparation method technique is simple, is produced using existing equipment.
A kind of Zn Rotary Kilns electric smelting is made up of, always in conjunction with alumina magnesia-chrome fire brick the component of following weight percentage
Measure as 100%：
Electric smelting aluminium magnesia-chrome sand 78 ~ 96%
MgO superfine powders 0 ~ 2%
Cr2O3Superfine powder 0 ~ 5%
Active alpha-Al2O3Superfine powder 0% ~ 20%；
Percentage by weight 2-5% water and percentage by weight 3-8% complexing magnalium cementing agent are additionally added again as bonding agent；
The main component of described electric smelting aluminium magnesia-chrome sand is Al2O3, MgO and Cr2O3, granularity≤5mm, wherein, Al2O3Weight hundred
Divide ratio >=75%, bulk density >=3.02g/cm3, MgO percentage by weights >=17%, Cr2O3Percentage by weight >=5, impurity weight hundred
Divide than being not more than 2%.
The meso-position radius ＜ 0.088mm of described MgO superfine powders, wherein MgO weight percentage are more than 96%；
Described Cr2O3Meso-position radius the ＜ 5um, wherein Cr of superfine powder2O3Weight percentage be more than 99%；
Described active alpha-Al2O3Meso-position radius the ＜ 5um, wherein Al of superfine powder2O3Weight percentage be more than 99%；
The complexing magnalium cementing agent is to be formed by particle diameter for nano level component through HTHP complexing, and its main component is：
MgO >=45%, Al2O3>=1.5%, SiO2≤ 2%, Fe2O3≤ 2%, CaO≤2%.
Further, component of the described Zn Rotary Kilns electric smelting in conjunction with alumina magnesia-chrome fire brick by following weight percentage
Formed：
Electric smelting aluminium magnesia-chrome sand 80 ~ 96%
MgO superfine powders 0 ~ 2%
Cr2O3Superfine powder 0 ~ 2%
Active alpha-Al2O3Superfine powder 0 ~ 20%；
Percentage by weight 2-5% water and percentage by weight 3-8% complexing magnalium cementing agent are additionally added again as bonding agent.
Further, component of the described Zn Rotary Kilns electric smelting in conjunction with alumina magnesia-chrome fire brick by following weight percentage
Formed：
Electric smelting aluminium magnesia-chrome sand 78 ~ 89%
MgO superfine powders 0 ~ 2%
Cr2O3Superfine powder 0 ~ 5%
Active alpha-Al2O3Superfine powder 10 ~ 15%；
Percentage by weight 2-5% water and percentage by weight 3-8% complexing magnalium cementing agent are additionally added again as bonding agent.
Further, component of the described Zn Rotary Kilns electric smelting in conjunction with alumina magnesia-chrome fire brick by following weight percentage
Formed：
Electric smelting aluminium magnesia-chrome sand 93%
MgO superfine powders 0.5%
Cr2O3Superfine powder 1.5%
Active alpha-Al2O3Superfine powder 5%；
Percentage by weight 2-5% water and percentage by weight 3-8% complexing magnalium cementing agent are additionally added again as bonding agent.
Further, component of the described Zn Rotary Kilns electric smelting in conjunction with alumina magnesia-chrome fire brick by following weight percentage
Formed：
Electric smelting aluminium magnesia-chrome sand 92%
MgO superfine powders 1%
Cr2O3Superfine powder 2%
Active alpha-Al2O3Superfine powder 5%；
Percentage by weight 2-5% water and percentage by weight 3-8% complexing magnalium cementing agent are additionally added again as bonding agent.
Further, component of the described Zn Rotary Kilns electric smelting in conjunction with alumina magnesia-chrome fire brick by following weight percentage
Formed：
Electric smelting aluminium magnesia-chrome sand 91.5%
MgO superfine powders 1.5%
Cr2O3Superfine powder 2%
Active alpha-Al2O3Superfine powder 5%；
Percentage by weight 2-5% water and percentage by weight 3-8% complexing magnalium cementing agent are additionally added again as bonding agent.
Further, component of the described Zn Rotary Kilns electric smelting in conjunction with alumina magnesia-chrome fire brick by following weight percentage
Formed：
Electric smelting aluminium magnesia-chrome sand 91%
MgO superfine powders 2%
Cr2O3Superfine powder 2%
Active alpha-Al2O3Superfine powder 5%；
Percentage by weight 2-5% water and percentage by weight 3-8% complexing magnalium cementing agent are additionally added again as bonding agent.
Further, component of the described Zn Rotary Kilns electric smelting in conjunction with alumina magnesia-chrome fire brick by following weight percentage
Formed：
Electric smelting aluminium magnesia-chrome sand 95%
MgO superfine powders 0.5%
Cr2O3Superfine powder 1.5%
Active alpha-Al2O3Superfine powder 3%；
Percentage by weight 2-5% water and percentage by weight 3-8% complexing magnalium cementing agent are additionally added again as bonding agent.
Further, component of the described Zn Rotary Kilns electric smelting in conjunction with alumina magnesia-chrome fire brick by following weight percentage
Formed：
Electric smelting aluminium magnesia-chrome sand 91%
MgO superfine powders 0.5%
Cr2O3Superfine powder 1.5%
Active alpha-Al2O3Superfine powder 7%；
Percentage by weight 2-5% water and percentage by weight 3-8% complexing magnalium cementing agent are additionally added again as bonding agent.
Above-mentioned Zn Rotary Kilns electric smelting comprises the steps in conjunction with the preparation method of alumina magnesia-chrome fire brick：
1）Material is weighed according to proportioning, by granularity>After 0.088mm raw material stirs 2 ~ 3 minutes, water is added, soaks material, then add
Enter to be complexed magnalium cementing agent to stir 3 ~ 10 minutes, then granularity≤0.088mm of premixing raw material is added into stirring 3-10 minutes；
2）By the material after kneading on press it is compressing with 300 ~ 600MPa pressure；
3）Compressing blank is dried 12 ~ 24 hours in 100 ~ 200 DEG C；
4）Dried blank is sintered 3 ~ 5 hours in 1600 ~ 1700 DEG C, that is, obtains product.
After testing, alumina magnesia-chrome fire brick anti-slag ability of the invention is that 1600 DEG C × 3h of Zinc volatilization kiln slag Static crucible method is invaded
Erosion depth is less than 0.5mm, and thermal shock resistance is 1100 DEG C of water coolings 20 times.
Compared with prior art, the advantage of the invention is that：
1st, alumina magnesia-chrome fire brick chromium content of the invention is low, Cr2O3Percentage composition is no more than 5%.
2nd, for the present invention using complexing magnalium cementing agent as bonding agent, main component is MgO and Al2O3, the complexing magnalium glue
Tying agent is complexed and manufactured new material at high temperature under high pressure using nanometer technology, has cementation after aquation at normal temperatures,
After drying, the damascene of cross-linking is formed between particle and fine powder, is densified material structure, meanwhile, at high temperature, this
Kind complexing magnalium cementing agent powder can also play a part of promoting to burn.
3rd, alumina magnesia-chrome fire brick of the invention possesses good resistance to slag and thermal shock resistance simultaneously.Due to the product of the present invention
It is the neutral slant acidity refractory material using aluminum oxide as principal component, its essential mineral is magnalium chromium composite spinelle, and the system goes out
The temperature of existing liquid phase is 1925 DEG C, and complete liquefied temperature is more than 2000 DEG C, has to acid-base property slag and resists energy well
Power, and its thermal coefficient of expansion and modulus of elasticity are relatively low so that the thermal shock resistance of material is preferable, suitable for Zn Rotary Kilns.
4th, the active alpha-Al in the present invention2O3Superfine powder meso-position radius are less than 5um, and activity is high, under high temperature with the MgO in matrix
Superfine powder and Cr2O3Superfine powder react fabricated in situ magnalium chromium composite spinelle, during produce micro-volume expansion make material structure
Further densification.
Embodiment
Illustrate the embodiment of the present invention with reference to embodiment.
Material is purchased in market in following examples, wherein, complexing magnalium cementing agent is opened purchased from Tieling towards brightness power-saving technology
Send out Co., Ltd, model G3297BX.
The Zn Rotary Kilns electric smelting of the present invention is made up of in conjunction with alumina magnesia-chrome fire brick the component of following weight percentage：
Electric smelting aluminium magnesia-chrome sand, 78 ~ 96%,
MgO superfine powders, 0 ~ 2%,
Cr2O3Superfine powder, 0 ~ 5%,
Active alpha-Al2O3Superfine powder, 0% ~ 20%,
Percentage by weight 2-5% water and percentage by weight 3-8% complexing magnalium cementing agent are additionally added again as bonding agent.
The main component of described electric smelting aluminium magnesia-chrome sand is Al2O3, MgO and Cr2O3, granularity≤5mm, wherein, Al2O3Weight
Measure percentage >=75%, bulk density >=3.02g/cm3, MgO percentage by weights >=17%, Cr2O3Percentage by weight >=5, impurity weight
Measure percentage and be not more than 2%；The meso-position radius ＜ 0.088mm of described MgO superfine powders, wherein MgO weight percentage are more than
96%；Described Cr2O3Meso-position radius the ＜ 5um, wherein Cr of superfine powder2O3Weight percentage be more than 99%；Described active alpha-
Al2O3Meso-position radius the ＜ 5um, wherein Al of superfine powder2O3Weight percentage be more than 99%.
Further, component of the described Zn Rotary Kilns electric smelting in conjunction with alumina magnesia-chrome fire brick by following weight percentage
Formed：
Electric smelting aluminium magnesia-chrome sand 80 ~ 96%
MgO superfine powders 0 ~ 0.5%
Cr2O3Superfine powder 0 ~ 1.5%
Active alpha-Al2O3Superfine powder 0 ~ 20%,
Percentage by weight 2-5% water and percentage by weight 3-8% complexing magnalium cementing agent are additionally added again as bonding agent.
Further, component of the described Zn Rotary Kilns electric smelting in conjunction with alumina magnesia-chrome fire brick by following weight percentage
Formed：
Electric smelting aluminium magnesia-chrome sand 78 ~ 89%
MgO superfine powders 0 ~ 2%
Cr2O3Superfine powder 0 ~ 5%
Active alpha-Al2O3Superfine powder 10 ~ 15%,
Percentage by weight 2-5% water and percentage by weight 3-8% complexing magnalium cementing agent are additionally added again as bonding agent.
Embodiment 1
A kind of Zn Rotary Kilns electric smelting is made up of in conjunction with alumina magnesia-chrome fire brick the component of following weight percentage：
Electric smelting aluminium magnesia-chrome sand, 93%,
MgO superfine powders, 0.5%,
Cr2O3Superfine powder, 1.5%,
Active alpha-Al2O3Superfine powder, 5%,
100% is added up to above-mentioned raw material components, then adds the water of percentage by weight 2% and the complexing magnalium glue of percentage by weight 3%
Agent is tied as bonding agent.
The preparation method of above-mentioned refractory brick, comprises the steps：
1）Material needed for being weighed according to above-mentioned proportioning, by granularity>After 0.088mm raw material stirs 2 ~ 3 minutes, water is added,
Material is soaked, complexing magnalium cementing agent is added and stirs 3 ~ 10 minutes, then granularity≤0.088mm of premixing raw material is added
Stir 3-10 minutes；
2）By the material after kneading on press it is compressing with 600MPa pressure；
3）Compressing blank is dried 12 hours in 200 DEG C；
4）Dried blank is sintered 3 hours in 1700 DEG C, that is, obtains product.
Embodiment 2
A kind of Zn Rotary Kilns electric smelting is made up of in conjunction with alumina magnesia-chrome fire brick the component of following weight percentage：
Electric smelting aluminium magnesia-chrome sand, 92%,
MgO superfine powders, 1%,
Cr2O3Superfine powder, 2%,
Active alpha-Al2O3Superfine powder, 5%,
100% is added up to above-mentioned raw material components, then adds the water of percentage by weight 4% and the complexing magnalium glue of percentage by weight 6%
Agent is tied as bonding agent.
The preparation method of above-mentioned refractory brick, comprises the steps：
1）Material needed for being weighed according to above-mentioned proportioning, by granularity>After 0.088mm raw material stirs 2 ~ 3 minutes, addition is always matched somebody with somebody
The 2-5% water wetting material of doses, adds complexing magnalium cementing agent and stirs 3 ~ 10 minutes, then by the granularity of premixing≤
0.088mm raw material adds stirring 3-10 minutes；
2）By the material after kneading on press it is compressing with 300MPa pressure；
3）Compressing blank is dried 24 hours in 100 DEG C；
4）Dried blank is sintered 5 hours in 1600 DEG C, that is, obtains product.
Embodiment 3
A kind of Zn Rotary Kilns electric smelting is made up of in conjunction with alumina magnesia-chrome fire brick the component of following weight percentage：
Electric smelting aluminium magnesia-chrome sand, 91.5%,
MgO superfine powders, 1.5%,
Cr2O3Superfine powder, 2%,
Active alpha-Al2O3Superfine powder, 5%,
100% is added up to above-mentioned raw material components, then adds the water of percentage by weight 5% and the complexing magnalium glue of percentage by weight 8%
Agent is tied as bonding agent.
The preparation method of above-mentioned refractory brick, comprises the steps：
1）Material needed for being weighed according to above-mentioned proportioning, by granularity>After 0.088mm raw material stirs 2 ~ 3 minutes, water is added,
Material is soaked, complexing magnalium cementing agent is added and stirs 3 ~ 10 minutes, then granularity≤0.088mm of premixing raw material is added
Stir 3-10 minutes；
2）By the material after kneading on press it is compressing with 450MPa pressure；
3）Compressing blank is dried 12 ~ 24 hours in 100 ~ 200 DEG C；
4）Dried blank is sintered 4 hours in 1680 DEG C, that is, obtains product.
Embodiment 4
A kind of Zn Rotary Kilns electric smelting is made up of in conjunction with alumina magnesia-chrome fire brick the component of following weight percentage：
Electric smelting aluminium magnesia-chrome sand, 91%,
MgO superfine powders, 2%,
Cr2O3Superfine powder, 2%,
Active alpha-Al2O3Superfine powder, 5%,
100% is added up to above-mentioned raw material components, then adds the water of percentage by weight 4% and the complexing magnalium glue of percentage by weight 7%
Agent is tied as bonding agent.
Preparation method is the same as embodiment 1.
Embodiment 5
A kind of Zn Rotary Kilns electric smelting is made up of in conjunction with alumina magnesia-chrome fire brick the component of following weight percentage：
Electric smelting aluminium magnesia-chrome sand, 96%,
MgO superfine powders, 0.5%,
Cr2O3Superfine powder, 1.5%,
Active alpha-Al2O3Superfine powder, 1%,
100% is added up to above-mentioned raw material components, then adds the water of percentage by weight 4% and the complexing magnalium glue of percentage by weight 7%
Agent is tied as bonding agent.
Preparation method is the same as embodiment 2.
Embodiment 6
A kind of Zn Rotary Kilns electric smelting is made up of in conjunction with alumina magnesia-chrome fire brick the component of following weight percentage：
Electric smelting aluminium magnesia-chrome sand, 93%,
Mg0 superfine powders, 0.5%,
Cr2O3Superfine powder, 1.5%,
Active alpha-Al2O3Superfine powder, 5%,
100% is added up to above-mentioned raw material components, then adds the water of percentage by weight 3% and the complexing magnalium glue of percentage by weight 6%
Agent is tied as bonding agent.
Preparation method is the same as embodiment 3.
Embodiment 7
A kind of Zn Rotary Kilns electric smelting is made up of in conjunction with alumina magnesia-chrome fire brick the component of following weight percentage：
Electric smelting aluminium magnesia-chrome sand, 91%,
MgO superfine powders, 0.5%,
Cr2O3Superfine powder, 1.5%,
Active alpha-Al2O3Superfine powder, 7%,
100% is added up to above-mentioned raw material components, then adds the water of percentage by weight 5% and the complexing magnalium glue of percentage by weight 8%
Agent is tied as bonding agent.
Preparation method is the same as embodiment 1.
Embodiment 8
A kind of Zn Rotary Kilns electric smelting is made up of in conjunction with alumina magnesia-chrome fire brick the component of following weight percentage：
Electric smelting aluminium magnesia-chrome sand, 78%,
MgO superfine powders, 2%,
Cr2O3Superfine powder, 5%,
Active alpha-Al2O3Superfine powder, 15%,
100% is added up to above-mentioned raw material components, then adds the water of percentage by weight 2% and the complexing magnalium glue of percentage by weight 5%
Agent is tied as bonding agent.
Embodiment 9
A kind of Zn Rotary Kilns electric smelting is made up of in conjunction with alumina magnesia-chrome fire brick the component of following weight percentage：
Electric smelting aluminium magnesia-chrome sand, 96%,
MgO superfine powders, 0%,
Cr2O3Superfine powder, 0%,
Active alpha-Al2O3Superfine powder, 4%,
100% is added up to above-mentioned raw material components, then adds the water of percentage by weight 4% and the complexing magnalium glue of percentage by weight 8%
Agent is tied as bonding agent.
Embodiment 10
A kind of Zn Rotary Kilns electric smelting is made up of in conjunction with alumina magnesia-chrome fire brick the component of following weight percentage：
Electric smelting aluminium magnesia-chrome sand, 79%,
MgO superfine powders, 0.5%,
Cr2O3Superfine powder, 0.5%,
Active alpha-Al2O3Superfine powder, 20%,
100% is added up to above-mentioned raw material components, then adds the water of percentage by weight 3% and the complexing magnalium glue of percentage by weight 5%
Agent is tied as bonding agent.
Embodiment 11
A kind of Zn Rotary Kilns electric smelting is made up of in conjunction with alumina magnesia-chrome fire brick the component of following weight percentage：
Electric smelting aluminium magnesia-chrome sand 95%,
MgO superfine powders 0.5%,
Cr2O3Superfine powder 1.5%,
Active alpha-Al2O3Superfine powder 3%,
100% is added up to above-mentioned raw material components, then adds the water of percentage by weight 3% and the complexing magnalium glue of percentage by weight 6%
Agent is tied as bonding agent.
Wherein, the performance indications of refractory brick are as shown in table 1 in above-described embodiment 1 ~ 7：
The performance indications of table 1, product
Claims (8)
1. a kind of Zn Rotary Kilns electric smelting is made up of, total amount in conjunction with alumina magnesia-chrome fire brick the component of following weight percentage
For 100%：
Electric smelting aluminium magnesia-chrome sand 78 ~ 96%
MgO superfine powders 0 ~ 2%
Cr2O3Superfine powder 0 ~ 5%
Active alpha-Al2O3Superfine powder 0% ~ 20%；
Percentage by weight 2-5% water and percentage by weight 3-8% complexing magnalium cementing agent are additionally added again as bonding agent.
2. Zn Rotary Kilns electric smelting according to claim 1 is in conjunction with alumina magnesia-chrome fire brick, it is characterised in that by following heavy
The component of amount percentage is formed：
Electric smelting aluminium magnesia-chrome sand 80 ~ 96%
MgO superfine powders 0 ~ 2%
Cr2O3Superfine powder 0 ~ 2%
Active alpha-Al2O3Superfine powder 0 ~ 20%；
Percentage by weight 2-5% water and percentage by weight 3-8% complexing magnalium cementing agent are additionally added again as bonding agent.
3. Zn Rotary Kilns electric smelting according to claim 1 is in conjunction with alumina magnesia-chrome fire brick, it is characterised in that by following heavy
The component of amount percentage is formed：
Electric smelting aluminium magnesia-chrome sand 78 ~ 89%
MgO superfine powders 0 ~ 2%
Cr2O3Superfine powder 0 ~ 5%
Active alpha-Al2O3Superfine powder 10 ~ 15%；
The complexing magnalium cementing agent of 2-5% water and 3-8% percentage by weights is additionally added again as bonding agent.
4. the Zn Rotary Kilns electric smelting according to claims 1 to 3 any one exists in conjunction with alumina magnesia-chrome fire brick, its feature
In the main component of described electric smelting aluminium magnesia-chrome sand is Al2O3, MgO and Cr2O3, granularity≤5mm, wherein, Al2O3Weight hundred
Divide ratio >=75%, bulk density >=3.02g/cm3, MgO percentage by weights >=17%, Cr2O3Percentage by weight >=5, impurity weight hundred
Divide than being not more than 2%.
5. the Zn Rotary Kilns electric smelting according to claims 1 to 3 any one exists in conjunction with alumina magnesia-chrome fire brick, its feature
In the meso-position radius ＜ 0.088mm of described MgO superfine powders, wherein MgO weight percentage are more than 96%.
6. the Zn Rotary Kilns electric smelting according to claims 1 to 3 any one exists in conjunction with alumina magnesia-chrome fire brick, its feature
In described Cr2O3Meso-position radius the ＜ 5um, wherein Cr of superfine powder2O3Weight percentage be more than 99%.
7. the Zn Rotary Kilns electric smelting according to claims 1 to 3 any one exists in conjunction with alumina magnesia-chrome fire brick, its feature
In described active alpha-Al2O3Meso-position radius the ＜ 5um, wherein Al of superfine powder2O3Weight percentage be more than 99%.
8. Zn Rotary Kilns electric smelting described in claims 1 to 3 any one is in conjunction with the preparation method of alumina magnesia-chrome fire brick, its
It is characterised by, comprises the steps：
1）Material is weighed according to proportioning, after granularity >=0.088mm raw material is stirred 2 ~ 3 minutes, adds water, soaks material, then
Add complexing magnalium cementing agent to stir 3 ~ 10 minutes, then the granularity ＜ 0.088mm of premixing raw material is added into 3-10 points of stirring
Clock；
2）By mixed material on press it is compressing with 300 ~ 600MPa pressure；
3）Compressing blank is dried 12 ~ 24 hours in 100 ~ 200 DEG C；
4）Dried blank is sintered 3 ~ 5 hours in 1600 ~ 1700 DEG C, that is, obtains product.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109592970A (en) * | 2018-12-20 | 2019-04-09 | 瑞泰科技股份有限公司 | A kind of low chromium electric smelting recombined magnesia-chrome brick |
| CN110171961A (en) * | 2018-12-20 | 2019-08-27 | 瑞泰科技股份有限公司 | A kind of aluminium chrome-magnesite firebrick and preparation method thereof |
| CN110937905A (en) * | 2019-11-07 | 2020-03-31 | 浙江锦诚新材料股份有限公司 | High-thermal-shock-resistance composite kiln mouth castable |
| CN116589287A (en) * | 2023-01-08 | 2023-08-15 | 无锡市南方耐材有限公司 | Low-cost and long-service-life sliding plate brick and preparation method thereof |
| CN116903353A (en) * | 2023-09-14 | 2023-10-20 | 北京利尔高温材料股份有限公司 | Long-service-life ladle bottom brick and preparation method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1062334A (en) * | 1991-05-28 | 1992-07-01 | 冶金工业部辽宁镁矿公司 | A kind of burnt Ma-Al-Cr refractory brick and manufacture method thereof |
| CN1072402A (en) * | 1991-11-20 | 1993-05-26 | 高永劲 | Magnalium picotite sand and preparation method |
| CN102731121A (en) * | 2012-07-12 | 2012-10-17 | 辽宁中镁合金股份有限公司 | High-performance magnesium-aluminum-chromium composite spinel brick and manufacturing method thereof |
| CN103922763A (en) * | 2014-03-19 | 2014-07-16 | 锦州集信高温材料有限公司 | Electric melting magnesium-aluminum-chromium synthesis material and production method thereof |
| CN104909769A (en) * | 2015-06-03 | 2015-09-16 | 辽宁科技大学 | Magnesium-base composite refractory raw material and preparation method thereof |
| CN105523769A (en) * | 2016-01-14 | 2016-04-27 | 辽宁科技大学 | Low-heat-conductivity magnesia-hercynite brick used for cement rotary kiln and production method thereof |
| CN106830955A (en) * | 2017-02-20 | 2017-06-13 | 孙光 | A kind of microwave drying prepares the method for not burning modified high-purity magnesium-aluminum spinel composite brick |
| CN106866117A (en) * | 2017-02-20 | 2017-06-20 | 孙光 | One kind does not burn modified high-purity magnesium-aluminum spinel composite brick and preparation method |
| CN106966708A (en) * | 2017-04-25 | 2017-07-21 | 孙光 | A kind of non-burning aluminum magnesia carbon brick and preparation method thereof |
-
2017
- 2017-12-11 CN CN201711305582.4A patent/CN107793166A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1062334A (en) * | 1991-05-28 | 1992-07-01 | 冶金工业部辽宁镁矿公司 | A kind of burnt Ma-Al-Cr refractory brick and manufacture method thereof |
| CN1072402A (en) * | 1991-11-20 | 1993-05-26 | 高永劲 | Magnalium picotite sand and preparation method |
| CN102731121A (en) * | 2012-07-12 | 2012-10-17 | 辽宁中镁合金股份有限公司 | High-performance magnesium-aluminum-chromium composite spinel brick and manufacturing method thereof |
| CN103922763A (en) * | 2014-03-19 | 2014-07-16 | 锦州集信高温材料有限公司 | Electric melting magnesium-aluminum-chromium synthesis material and production method thereof |
| CN104909769A (en) * | 2015-06-03 | 2015-09-16 | 辽宁科技大学 | Magnesium-base composite refractory raw material and preparation method thereof |
| CN105523769A (en) * | 2016-01-14 | 2016-04-27 | 辽宁科技大学 | Low-heat-conductivity magnesia-hercynite brick used for cement rotary kiln and production method thereof |
| CN106830955A (en) * | 2017-02-20 | 2017-06-13 | 孙光 | A kind of microwave drying prepares the method for not burning modified high-purity magnesium-aluminum spinel composite brick |
| CN106866117A (en) * | 2017-02-20 | 2017-06-20 | 孙光 | One kind does not burn modified high-purity magnesium-aluminum spinel composite brick and preparation method |
| CN106966708A (en) * | 2017-04-25 | 2017-07-21 | 孙光 | A kind of non-burning aluminum magnesia carbon brick and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 《耐火材料工厂设计参考资料》编写组: "《耐火材料工厂设计参考资料》", 30 April 1980, 冶金工业出版社 * |
| 李红霞: "《耐火材料手册》", 31 January 2007, 冶金工业出版社 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109592970A (en) * | 2018-12-20 | 2019-04-09 | 瑞泰科技股份有限公司 | A kind of low chromium electric smelting recombined magnesia-chrome brick |
| CN110171961A (en) * | 2018-12-20 | 2019-08-27 | 瑞泰科技股份有限公司 | A kind of aluminium chrome-magnesite firebrick and preparation method thereof |
| CN110937905A (en) * | 2019-11-07 | 2020-03-31 | 浙江锦诚新材料股份有限公司 | High-thermal-shock-resistance composite kiln mouth castable |
| CN110937905B (en) * | 2019-11-07 | 2022-04-29 | 浙江锦诚新材料股份有限公司 | High-thermal-shock-resistance composite kiln mouth castable |
| CN116589287A (en) * | 2023-01-08 | 2023-08-15 | 无锡市南方耐材有限公司 | Low-cost and long-service-life sliding plate brick and preparation method thereof |
| CN116589287B (en) * | 2023-01-08 | 2024-04-05 | 无锡市南方耐材有限公司 | Low-cost and long-service-life sliding plate brick and preparation method thereof |
| CN116903353A (en) * | 2023-09-14 | 2023-10-20 | 北京利尔高温材料股份有限公司 | Long-service-life ladle bottom brick and preparation method thereof |
| CN116903353B (en) * | 2023-09-14 | 2023-12-29 | 北京利尔高温材料股份有限公司 | Long-service-life ladle bottom brick and preparation method thereof |
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