CN107915474A - A kind of cement kiln clinkering zone mafic spinel brick and preparation method thereof - Google Patents

A kind of cement kiln clinkering zone mafic spinel brick and preparation method thereof Download PDF

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Publication number
CN107915474A
CN107915474A CN201810030472.XA CN201810030472A CN107915474A CN 107915474 A CN107915474 A CN 107915474A CN 201810030472 A CN201810030472 A CN 201810030472A CN 107915474 A CN107915474 A CN 107915474A
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China
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granularity
cement kiln
clinkering zone
high ferro
mafic
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Inventor
杨忠德
刘德嵩
陶玕玭
于龙泉
林鑫
张栋
李锦祥
曾杜
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Anhui Conch Cement Co Ltd
Anhui Conch SCG Refractory Co Ltd
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Anhui Conch SCG Refractory Co Ltd
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Priority to CN201810030472.XA priority Critical patent/CN107915474A/en
Publication of CN107915474A publication Critical patent/CN107915474A/en
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
    • C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
    • C04B35/043—Refractories from grain sized mixtures
    • 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
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74—Physical characteristics
    • C04B2235/77—Density
    • 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
    • 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 invention discloses a kind of cement kiln clinkering zone mafic spinel brick and preparation method thereof, belong to refractory brick field, it is made of high ferro magnesia, highly-purity magnesite, electric melting magnesium aluminum spinel and calcium lignosulfonate solution etc., during production various raw materials are weighed by proportioning, it is compressing that mixture is obtained after mixing, fires form at high temperature.This refractory brick has higher bulk density and intensity, good thermal shock resistance, erosion-resisting characteristics, extension kliner coating performance etc., disclosure satisfy that the severe Service Environments such as large-size cement kiln burning zone temperature is high, atmosphere is complicated, erosion is serious.This refractory brick product adaptation demand for development of cement kiln refractory Trend of Chrome-free, production cost substantially reduce.

Description

A kind of cement kiln clinkering zone mafic spinel brick and preparation method thereof
Technical field
The present invention relates to refractory brick processing technique field, and specifically, the present invention relates to a kind of cement kiln clinkering zone magnesium Hercynite brick and preparation method thereof.
Background technology
With the development of domestic economy, people improve the understanding of environmental protection problem importance, cement kiln Chrome-free alkali Property brick has obtained significant progress, and cement kiln also develops towards the direction of maximization, diversification, long service life.In recent years, with life Production house refuse increases, and the pressure of garbage disposal continues to increase, and the exploitation that cement kiln solid waste is total to disposal technology causes Cement industry becomes diversification, except producing cement, also assume responsibility for the responsibility of digestion rubbish.This technology is disappeared using one side Changed rubbish, but then so that cement kiln kiln atmosphere becomes more complicated and changeable, alkali, sulphur, chlorine increase and oxygen Change the change of a reducing atmosphere, along with cement kiln constantly maximizes, these cause requirement to refractory material quality also more It is harsh.Magnesite-chrome brick is widely used in the burning of cement rotary kiln by its excellent high stability and extension kliner coating performance always from birth Into band and intermediate zone, " universal brick " is once called, until today still there are many cement kilns also to rely primarily on magnesite-chrome brick to transport Turn.But due to chromium pollution problem（Hexavalent chromium (Cr6+) serious environmental pollution can be caused）, people, which will be important to note that, improves life Environmental quality living, environmental protection, which will become in industrial development, needs key problems-solving, cement kiln refractory Trend of Chrome-free Development it is very urgent.
Cement kiln clinkering zone is that cement slurry is changed into clinker, the most rapid region of chemical reaction, the regional temperature compared with Height, fluctuation are larger, need to form one layer of stable kliner coating on brick body surface to protect refractory brick, meanwhile, the clinker in the region In molten condition, the infiltration erosion to material is more serious, therefore it is required that the heat resistance of refractory material, extension kliner coating, impermeabilisation are invaded Corrosion is good.On the other hand, the mechanical stress and thermal stress that large-scale cement rotary kiln produces in operation process are larger, its production capacity compared with Greatly, therefore it is required that material has good Structural flexibility and product stability.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of cement kiln clinkering zone mafic spinel brick, production cost Low, the refractory brick intensity of production is high, corrosion resistance is strong and the refractory brick of service life length.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：A kind of cement kiln clinkering zone magnesium iron Spinel brick, with mafic spinel brick by weight percentage, the raw material composition is the cement kiln clinkering zone：50-70%'s High ferro magnesia, the highly-purity magnesite of 15-25%, the electric melting magnesium aluminum spinel of 10-25%, the lignin of additional above-mentioned raw materials total amount 2-5% Sulfonic acid calcium solution is bonding agent, wherein, the solid content of calcium lignosulfonate solution is controlled in 50-55%.
Preferably, the high ferro magnesia granularity for 4.75-1.70mm, 1.70-0.60mm, three kinds of granularities of≤0.60mm, Highly-purity magnesite granularity is≤0.088mm, and electric melting magnesium aluminum spinel granularity is two kinds of granularities of 3-1mm, 1-0mm.
Preferably, the mixed mixture different grain size of the high ferro magnesia, highly-purity magnesite, electric melting magnesium aluminum spinel raw material Ratio be：
Mixing material granularity accounts for 15-30% for 1.70≤granularity≤4.75mm's,
Mixing material granularity accounts for 20-35% for 0.60≤granularity≤1.70mm's,
Mixing material granularity accounts for 4-20% for 0.212≤granularity≤0.6mm's,
Mixing material granularity accounts for 30-50% for≤0.212mm's.
Preferably, MgO >=87.0%, SiO in the high ferro magnesia2≤ 1.5%, Fe2O3≤ 6.0%, CaO≤3.0%, Bulk density >=3.15g/cm3.
Preferably, MgO >=97.0%, SiO in the highly-purity magnesite2≤ 0.8%, Fe2O3≤ 0.9%, CaO≤1.4%, Bulk density >=3.25g/cm3。
Preferably, content of MgO is 28-34%, Al in the electric melting magnesium aluminum spinel2O3Content is 64-70%, SiO2≤ 0.5%th, Fe2O3≤ 0.5%, CaO≤0.65%, bulk density >=3.30g/cm3。
The preparation method of cement kiln clinkering zone mafic spinel brick, comprises the following steps：
（1）Dispensing, various raw materials are weighed by proportioning, are sequentially added high ferro magnesia, granularity that granularity is 4.75-1.70mm and are The high ferro magnesia of 1.70-0.60mm, the electric melting magnesium aluminum spinel that granularity is the≤high ferro magnesia of 0.60mm, granularity is 3-1mm, are mixed 2-4min is closed, adds calcium lignosulfonate solution, mixes 1-3min, adds highly-purity magnesite of the granularity for≤0.088mm, then into Row mixing 6-10min, is made pug；
（2）Base：The pug that step 1 obtains is pressed into adobe through Full Automatic Liquid press；
（3）It is dry：Adobe compressing in step 2 is positioned in 105-200 DEG C of dry kiln dry 24-40h, controls water Divide content≤0.5%；
（4）Fire：Dried adobe is placed in insulation 6-12h in 1400-1550 DEG C of tunnel oven to form by a firing；
（5）Cooling：The adobe cooled to room temperature that will be formed by a firing, removes defective work, and large-size cement kiln clinkering zone is made Use mafic spinel brick.
Technical solution using the present invention, can obtain following beneficial effect：
High ferro magnesia is introduced in the raw material of the cement kiln clinkering zone mafic spinel brick of the present invention, is existed in high ferro magnesia certain The ferriferous oxide of amount, the ferriferous oxide are solid-solution in periclase, are greatly improved the Structural flexibility of material and are hung kliner coating Can, simultaneously because high ferro magnesia is present in nature, and it is relatively stable, variation of valence will not occur because of iron ion during use And cause volume change, it is loose to avoid brick body.High ferro magnesia and electric melting magnesium aluminum spinel are aggregate, and highly-purity magnesite is matrix, Ion diffusion and the reaction speed in sintering process are controlled by controlling content and the granularity of raw material not of the same race, prepares one The mafic spinel brick of kind function admirable, with suitable for large-scale cement rotary kiln clinkering zone.This fire resisting brick product is in high temperature firing And its during the long-term high-temperature service phase, the Mg in material2+、Fe2+/Fe3+、Al3+Lasting diffusion is kept, produces activation, Mg2+With Al3+Reaction generates secondary magnesium aluminate spinel, Fe2+With Al3+Reaction generation hercynite, improves the anti-thermal shock of product Performance, is conducive to extend the service life of product.
Embodiment
Below by the description to embodiment, the embodiment of the present invention is described in further detail.
Embodiment one：
It is brilliant containing 55% high ferro magnesia, 25% highly-purity magnesite, 15% electric melting magnesium-aluminium point by weight percentage in the present embodiment dispensing Stone, the calcium lignosulfonate solution of additional above-mentioned raw materials total amount 5% is bonding agent, wherein, the solid content of calcium lignosulfonate solution Control is 51%.Above-mentioned high ferro magnesia granularity is 4.75-1.70mm, 1.70-0.60mm, tri- kinds of granularities of≤0.60mm have, high-purity Magnesia granularity is 0.088mm, and electric melting magnesium aluminum spinel granularity has for two kinds of granularities of 3-1mm, 1-0mm.After above-mentioned raw materials mixing Varigrained percentage by weight is：1.70≤granularity≤4.75mm's accounts for 20%, and 0.60≤granularity≤1.70mm's accounts for 20%, 0.212≤granularity≤0.6mm's accounts for 15%, and≤0.212mm's accounts for 45%.
Making step is：
（1）Dispensing, various raw materials are weighed by proportioning, are sequentially added high ferro magnesia, granularity that granularity is 4.75-1.70mm and are The high ferro magnesia of 1.70-0.60mm, the electric melting magnesium aluminum spinel that granularity is the≤high ferro magnesia of 0.60mm, granularity is 3-1mm, grain The electric melting magnesium aluminum spinel for 1-0mm is spent, mixes 2min, adds calcium lignosulfonate solution, mixes 3min, adding granularity is The highly-purity magnesite of≤0.088mm, then mixing 9min is carried out, pug is made；
（2）Base：The pug that step 1 obtains is pressed into adobe through Full Automatic Liquid press；
（3）It is dry：Adobe compressing in step 2 is positioned in 105-200 DEG C of dry kiln dry 24-40h, controls water Divide content≤0.5%；
（4）Fire：Dried adobe is placed in insulation 10.5h in 1480 DEG C of tunnel oven to form by a firing；
（5）Cooling：The adobe cooled to room temperature that will be formed by a firing, removes defective work, and large-size cement kiln clinkering zone is made Use mafic spinel brick.
The apparent porosity 17.9% of gained mafic spinel brick, bulk density 2.90g/cm3, cold crushing strength 68MPa, 1662 DEG C of strength at normal temperature 5.4MPa, refractoriness under load, thermal shock resistance（1100 DEG C, water cooling）For 14 times.
Embodiment two：
It is brilliant containing 62% high ferro magnesia, 17% highly-purity magnesite, 18% electric melting magnesium-aluminium point by weight percentage in the present embodiment dispensing Stone, the calcium lignosulfonate solution of additional above-mentioned raw materials total amount 3% is bonding agent, wherein, the solid content of calcium lignosulfonate solution Control is 54%.Above-mentioned high ferro magnesia granularity is 4.75-1.70mm, 1.70-0.60mm, tri- kinds of granularities of≤0.60mm have, high-purity Magnesia granularity is 0.088mm, electric melting magnesium aluminum spinel granularity is 3-1mm,.Two kinds of granularities of 1-0mm have, after above-mentioned raw materials mixing Varigrained percentage by weight is：1.70≤granularity≤4.75mm's accounts for 23%, and 0.60≤granularity≤1.70mm's accounts for 26%, 0.212≤granularity≤0.6mm's accounts for 12%, and≤0.212mm's accounts for 38%.
Making step is：
（1）Dispensing, various raw materials are weighed by proportioning, are sequentially added high ferro magnesia, granularity that granularity is 4.75-1.70mm and are The high ferro magnesia of 1.70-0.60mm, the electric melting magnesium aluminum spinel that granularity is the≤high ferro magnesia of 0.60mm, granularity is 3-1mm, grain The electric melting magnesium aluminum spinel for 1-0mm is spent, mixes 3min, adds calcium lignosulfonate solution, mixes 2min, adding granularity is The highly-purity magnesite of≤0.088mm, then mixing 8min is carried out, pug is made；
（2）Base：The pug that step 1 obtains is pressed into adobe through Full Automatic Liquid press；
（3）It is dry：Adobe compressing in step 2 is positioned in 105-200 DEG C of dry kiln dry 24-40h, controls water Divide content≤0.5%；
（4）Fire：Dried adobe is placed in insulation 9h in 1510 DEG C of tunnel oven to form by a firing；
（5）Cooling：The adobe cooled to room temperature that will be formed by a firing, removes defective work, and large-size cement kiln clinkering zone is made Use mafic spinel brick.
Apparent porosity 16.8%, bulk density 2.92g/cm3, the cold crushing strength of gained mafic spinel brick 74.3MPa, strength at normal temperature 6.7MPa, 1700 DEG C of refractoriness under load, thermal shock resistance（1100 DEG C, water cooling）For 16 times.
Embodiment three：
It is brilliant containing 70% high ferro magnesia, 15% highly-purity magnesite, 10% electric melting magnesium-aluminium point by weight percentage in the present embodiment dispensing Stone, the calcium lignosulfonate solution of additional above-mentioned raw materials total amount 5% is bonding agent, wherein, the solid content of calcium lignosulfonate solution Control is 55%.Above-mentioned high ferro magnesia granularity is 4.75-1.70mm, 1.70-0.60mm, tri- kinds of granularities of≤0.60mm have, high-purity Magnesia granularity is 0.068mm, and electric melting magnesium aluminum spinel granularity has for two kinds of granularities of 3-1mm, 1-0mm.Above-mentioned high ferro magnesia is not The percentage by weight of one-size is：1.70≤granularity≤4.75mm's accounts for 28%, and 0.60≤granularity≤1.70mm's accounts for 25%, 0.212≤granularity≤0.6mm's accounts for 17%, and≤0.212mm's accounts for 30%.
Making step is：
（1）Dispensing, various raw materials are weighed by proportioning, are sequentially added high ferro magnesia, granularity that granularity is 4.75-1.70mm and are The high ferro magnesia of 1.70-0.60mm, the electric melting magnesium aluminum spinel that granularity is the≤high ferro magnesia of 0.60mm, granularity is 3-1mm, grain The electric melting magnesium aluminum spinel for 1-0mm is spent, mixes 4min, adds calcium lignosulfonate solution, mixes 3min, adding granularity is The highly-purity magnesite of≤0.088mm, then mixing 8min is carried out, pug is made；
（2）Base：The pug that step 1 obtains is pressed into adobe through Full Automatic Liquid press；
（3）It is dry：Adobe compressing in step 2 is positioned in 105-200 DEG C of dry kiln dry 24-40h, controls water Divide content≤0.5%；
（4）Fire：Dried adobe is placed in insulation 10h in 1450 DEG C of tunnel oven to form by a firing；
（5）Cooling：The adobe cooled to room temperature that will be formed by a firing, removes defective work, and large-size cement kiln clinkering zone is made Use mafic spinel brick.
Apparent porosity 18.3%, bulk density 2.90g/cm3, the cold crushing strength of gained mafic spinel brick 70.1MPa, strength at normal temperature 5.86MPa, 1688 DEG C of refractoriness under load, thermal shock resistance（1100 DEG C, water cooling）For 17 times.
The present invention is exemplarily described above in conjunction with example, it is clear that the present invention implements and from aforesaid way Limitation, as long as the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is employed, or without changing Other occasions are directly applied into by the design of the present invention and technical solution, within protection scope of the present invention.

Claims (7)

  1. A kind of 1. cement kiln clinkering zone mafic spinel brick, it is characterised in that：The cement kiln clinkering zone magnoferrite By weight percentage, the raw material composition is brick：The high ferro magnesia of 50-70%, the highly-purity magnesite of 15-25%, the electricity of 10-25% Molten magnesium aluminate spinel, the calcium lignosulfonate solution of additional above-mentioned raw materials total amount 2-5% is bonding agent, wherein, calcium lignosulfonate The solid content of solution is controlled in 50-55%.
  2. 2. cement kiln clinkering zone mafic spinel brick according to claim 1, it is characterised in that：The high ferro magnesia grain Spend for three kinds of granularities of 4.75-1.70mm, 1.70-0.60mm ,≤0.60mm, highly-purity magnesite granularity is≤0.088mm, electric-melting magnesium Aluminate granularity is two kinds of granularities of 3-1mm, 1-0mm.
  3. 3. cement kiln clinkering zone mafic spinel brick according to claim 2, it is characterised in that：The high ferro magnesia, Highly-purity magnesite, the varigrained ratio of the mixed mixture of electric melting magnesium aluminum spinel raw material are：
    Mixing material granularity accounts for 15-30% for 1.70≤granularity≤4.75mm's,
    Mixing material granularity accounts for 20-35% for 0.60≤granularity≤1.70mm's,
    Mixing material granularity accounts for 4-20% for 0.212≤granularity≤0.6mm's,
    Mixing material granularity accounts for 30-50% for≤0.212mm's.
  4. 4. cement kiln clinkering zone mafic spinel brick according to claim 2, it is characterised in that：In the high ferro magnesia MgO >=87.0%, SiO2≤ 1.5%, Fe2O3≤ 6.0%, CaO≤3.0%, bulk density >=3.15g/cm3。
  5. 5. cement kiln clinkering zone mafic spinel brick according to claim 2, it is characterised in that：In the highly-purity magnesite MgO >=97.0%, SiO2≤ 0.8%, Fe2O3≤ 0.9%, CaO≤1.4%, bulk density >=3.25g/cm3。
  6. 6. cement kiln clinkering zone mafic spinel brick according to claim 2, it is characterised in that：The electric melting magnesium-aluminium point Content of MgO is 28-34%, Al in spar2O3Content is 64-70%, SiO2≤ 0.5%, Fe2O3≤ 0.5%, CaO≤0.65%, Bulk density >=3.30g/cm3。
  7. 7. a kind of preparation method of cement kiln clinkering zone mafic spinel brick, it is characterised in that comprise the following steps：
    （1）Dispensing, various raw materials are weighed by proportioning, are sequentially added high ferro magnesia, granularity that granularity is 4.75-1.70mm and are The high ferro magnesia of 1.70-0.60mm, the electric melting magnesium aluminum spinel that granularity is the≤high ferro magnesia of 0.60mm, granularity is 3-1mm, are mixed 2-4min is closed, adds calcium lignosulfonate solution, mixes 1-3min, adds highly-purity magnesite of the granularity for≤0.088mm, then into Row mixing 6-10min, is made pug；
    （2）Base：The pug that step 1 obtains is pressed into adobe through Full Automatic Liquid press；
    （3）It is dry：Adobe compressing in step 2 is positioned in 105-200 DEG C of dry kiln dry 24-40h, controls water Divide content≤0.5%；
    （4）Fire：Dried adobe is placed in insulation 6-12h in 1400-1550 DEG C of tunnel oven to form by a firing；
    （5）Cooling：The adobe cooled to room temperature that will be formed by a firing, removes defective work, and large-size cement kiln clinkering zone is made Use mafic spinel brick.
CN201810030472.XA 2018-01-12 2018-01-12 A kind of cement kiln clinkering zone mafic spinel brick and preparation method thereof Pending CN107915474A (en)

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Cited By (7)

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CN110066182A (en) * 2019-05-28 2019-07-30 江苏诺明高温材料股份有限公司 Utilize the method for pyrite cinder preparation magnesium-ferrum-aluminum composite material
CN110156443A (en) * 2019-05-28 2019-08-23 江苏诺明高温材料股份有限公司 It is a kind of to prepare MgO-Al with iron containing metallurgical dust2O3The method of-FeOn composite material
CN112456974A (en) * 2020-12-09 2021-03-09 北京金隅通达耐火技术有限公司 Magnalium spinel brick for co-processing cement kiln and preparation method and application thereof
CN115124359A (en) * 2022-07-20 2022-09-30 浙江锦诚新材料股份有限公司 High-stability magnesia-hercynite brick special for cement kiln and preparation method thereof
CN115417658A (en) * 2022-08-17 2022-12-02 辽宁中镁新材料有限公司 Novel magnesium aluminate spinel brick for cement kiln burning zone and production method thereof
CN115611614A (en) * 2022-09-06 2023-01-17 安徽海螺暹罗耐火材料有限公司 Low-heat-conductivity magnesia-hercynite brick for cement kiln and preparation method thereof
CN115650747A (en) * 2022-11-16 2023-01-31 鞍山钢铁冶金炉材科技有限公司 Magnesia-hercynite ladle wall gunning mix and preparation method thereof

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CN110066182A (en) * 2019-05-28 2019-07-30 江苏诺明高温材料股份有限公司 Utilize the method for pyrite cinder preparation magnesium-ferrum-aluminum composite material
CN110156443A (en) * 2019-05-28 2019-08-23 江苏诺明高温材料股份有限公司 It is a kind of to prepare MgO-Al with iron containing metallurgical dust2O3The method of-FeOn composite material
CN112456974A (en) * 2020-12-09 2021-03-09 北京金隅通达耐火技术有限公司 Magnalium spinel brick for co-processing cement kiln and preparation method and application thereof
CN115124359A (en) * 2022-07-20 2022-09-30 浙江锦诚新材料股份有限公司 High-stability magnesia-hercynite brick special for cement kiln and preparation method thereof
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CN115611614A (en) * 2022-09-06 2023-01-17 安徽海螺暹罗耐火材料有限公司 Low-heat-conductivity magnesia-hercynite brick for cement kiln and preparation method thereof
CN115650747A (en) * 2022-11-16 2023-01-31 鞍山钢铁冶金炉材科技有限公司 Magnesia-hercynite ladle wall gunning mix and preparation method thereof
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Application publication date: 20180417