CN112573908A - Novel refractory brick material and preparation process thereof - Google Patents

Novel refractory brick material and preparation process thereof Download PDF

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Publication number
CN112573908A
CN112573908A CN202011147452.4A CN202011147452A CN112573908A CN 112573908 A CN112573908 A CN 112573908A CN 202011147452 A CN202011147452 A CN 202011147452A CN 112573908 A CN112573908 A CN 112573908A
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mullite
alumina
ai2o
fe2o3
sio2
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Inventor
毋济祥
范刘民
段阳阳
苗云
王金霞
卢珺珺
卢爱军
王红栓
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Jiyuan Lianyuan Furnace Industry Co ltd
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Jiyuan Lianyuan Furnace Industry Co ltd
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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
    • C04B35/10—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 aluminium oxide
    • C04B35/101—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
    • 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
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/6303—Inorganic additives
    • C04B35/6306—Binders based on phosphoric acids or phosphates
    • C04B35/6309—Aluminium phosphates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
    • 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
    • C04B2235/3427—Silicates other than clay, e.g. water glass
    • C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
    • 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

Abstract

The invention provides a novel refractory brick material and a preparation process thereof, wherein the refractory brick material comprises hard clay, high-alumina clinker, sintered mullite, electrofused mullite, brown fused alumina, soft clay, silicon oxide micro powder, alumina micro powder and acidic aluminum phosphate, and comprises the following components: hard clay: 8% -12%; high-alumina clinker aggregate: 10% -60%; sintering mullite: 1% -6%; electrically melting mullite: 1% -6%; brown corundum: 18% -22%; soft clay: 10% -15%; silicon oxide micro powder: 1% -5%; alumina micropowder: 1% -7%; acidic aluminum phosphate: 8% -28, the novel refractory brick material enables the refractory material and the preparation process thereof to have good structural stability and air tightness, can experience various chemical and physical actions in a high-temperature environment, ensures the safe and normal operation of thermal equipment, meets the requirements of long service life, high efficiency and low consumption, and simultaneously has good masonry effect.

Description

Novel refractory brick material and preparation process thereof
Technical Field
The invention relates to the technical field of refractory materials, in particular to a novel refractory brick material and a preparation process thereof.
Background
Refractory materials are generally divided into two categories, namely unshaped refractory and shaped refractory. The unshaped refractory material, also called as casting material, is a mixed powder granule composed of various aggregates or aggregates and one or more kinds of adhesives, and when in use, the unshaped refractory material must be matched with one or more kinds of liquids to be stirred uniformly, and has stronger fluidity. The shaped refractory material generally refers to a refractory brick, the shape of which has standard rules, and the shaped refractory material can also be temporarily processed when being built and cut as required, wherein the refractory mortar is a main raw material, so that the key of the refractory material is how to reduce dust and increase the adhesiveness of the material, and meanwhile, the good plasticity of the refractory material is increased.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the existing defects and provide a novel refractory brick material and a preparation process thereof, so that the refractory material has good structural stability and air tightness, can experience various chemical and physical actions in a high-temperature environment, ensures the safe and normal operation of thermal equipment, meets the requirements of long service life, high efficiency and low consumption, simultaneously has a good masonry effect, and can effectively solve the problems in the background art.
In order to achieve the above object, the present invention proposes: a novel refractory brick material comprises hard clay, high-alumina clinker, sintered mullite, fused mullite, brown corundum, soft clay, silicon oxide micro powder, aluminum oxide micro powder and acidic aluminum phosphate, and comprises the following components:
hard clay: 8% -12%;
high-alumina clinker aggregate: 10% -60%;
sintering mullite: 1% -6%;
electrically melting mullite: 1% -6%;
brown corundum: 18% -22%;
soft clay: 10% -15%;
silicon oxide micro powder: 1% -5%;
alumina micropowder: 1% -7%;
acidic aluminum phosphate: 8 to 28 percent.
The invention also provides a preparation process of the novel refractory brick material, which comprises the following steps:
s1) cleaning: firstly, cleaning a forced stirrer;
s2) proportioning: accurately weighing the semi-finished raw materials by using an electronic batching scale according to the weight required by the batching list;
s3) mixing: and pouring the semi-finished raw materials into a forced mixer in sequence, and dry-mixing for 5-8 min. Discharging the premix out of the stirrer, and subpackaging into bags for later use;
s4) preparing materials: packaging the binding agent into 200kg per barrel;
s5) weighing the premix, adding the bonding agent into the premix according to the proportion, and stirring for 15-20min to build the refractory bricks;
the semi-finished product comprises the following raw materials: the semi-finished product comprises the following raw materials of hard clay, high-alumina clinker, sintered mullite, fused mullite, brown corundum, soft clay, silicon oxide micro powder, alumina micro powder and acidic aluminum phosphate, wherein the raw materials of the semi-finished product comprise:
hard clay: AI2O 3: 45.67-59.85;
SIO2：36.08-46.56；
Fe2O3：1.2；
K2O：0.43；
Cao：0.19；
TiO2：1.99；
Mgo：0.18；
Na2O：0.08；
high-alumina clinker aggregate: AI2O 3: 80.14-85.69;
SIO2：10.78-17.96；
Fe2O3：1.1；
Cao：0.6；
Mgo：0.2；
sintering mullite: AI2O 3: 66.21-70.18;
SIO2：27.63-32.66；
Fe2O3：0.61-1.68；
Cao：0.3；
Mgo：0.22；
electrically melting mullite: AI2O 3: 66.22-68.54;
SIO2：31.6-21.3；
Fe2O3：0.17-0.38；
brown corundum: AI2O 3: 95.4-97.1;
SIO2：1.5-1.8；
Fe2O3：0.91；
Cao：0.25；
Mgo：0.18；
Na2O：0.06；
soft clay: AI2O 3: 32.4 of the total weight of the mixture;
SIO2：51.76；
Fe2O3：2.61；
Cao：0.18；
Mgo：2.66；
Na2O：0.32；
TiO2：0.31；
silicon oxide micro powder: AI2O 3: 1.28;
SIO2：95.78；
Fe2O3：0.1；
Cao：0.21；
Mgo：0.36；
C：2.16；
K2O：0.11；
alumina micropowder: AI2O 3: 99.5-99.81;
SIO2：0.16-0.025；
Fe2O3：0.03；
Cao：0.03；
Mgo：0.04；
Na2O：0.03；
acidic aluminum phosphate: al2O 3: 16.1;
H2O：17.01；
P2O5：66.89。
as a preferred technical scheme, the bonding agent is an environment-friendly inorganic cementing agent.
Compared with the prior art, the invention has the beneficial effects that: the novel refractory brick material enables the refractory material and the preparation process thereof to have good structural stability and air tightness, can experience various chemical and physical actions in a high-temperature environment, ensures the safe and normal operation of thermal equipment, achieves the requirements of long service life, high efficiency and low consumption, and simultaneously has good masonry effect.
Detailed Description
Technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows: a novel refractory brick material comprises hard clay, high-alumina clinker, sintered mullite, fused mullite, brown corundum, soft clay, silicon oxide micro powder, aluminum oxide micro powder and acidic aluminum phosphate, and comprises the following components:
hard clay: 8 percent;
high-alumina clinker aggregate: 20 percent;
sintering mullite: 2 percent;
electrically melting mullite: 2 percent;
brown corundum: 18 percent;
soft clay: 12 percent;
silicon oxide micro powder: 4 percent;
alumina micropowder: 6 percent;
acidic aluminum phosphate: 28 percent.
The invention also provides a preparation process of the novel refractory brick material, which comprises the following steps:
s1) cleaning: firstly, cleaning a forced stirrer;
s2) proportioning: accurately weighing the semi-finished raw materials by using an electronic batching scale according to the weight required by the batching list;
s3) mixing: and pouring the semi-finished raw materials into a forced mixer in sequence, and dry-mixing for 5-8 min. Discharging the premix out of the stirrer, and subpackaging into bags for later use;
s4) preparing materials: packaging the binding agent into 200kg per barrel;
s5) weighing the premix, adding the binder into the premix according to the proportion, and stirring for 15-20min to build the refractory bricks, wherein the proportion of the premix to the binder is 2: 1;
the semi-finished product comprises the following raw materials: the semi-finished product comprises the following raw materials of hard clay, high-alumina clinker, sintered mullite, fused mullite, brown corundum, soft clay, silicon oxide micro powder, alumina micro powder and acidic aluminum phosphate, wherein the raw materials of the semi-finished product comprise:
hard clay: AI2O 3: 59.85, respectively;
SIO2：36.08；
Fe2O3：1.2；
K2O：0.43；
Cao：0.19；
TiO2：1.99；
Mgo：0.18；
Na2O：0.08；
high-alumina clinker aggregate: AI2O 3: 80.14 of the total weight of the powder;
SIO2：17.96；
Fe2O3：1.1；
Cao：0.6；
Mgo：0.2；
sintering mullite: AI2O 3: 66.21, respectively;
SIO2： 32.66；
Fe2O3：0.61；
Cao：0.3；
Mgo：0.22；
electrically melting mullite: AI2O 3: 68.23;
SIO2：31.6；
Fe2O3：0.17；
brown corundum: AI2O 3: 97.1;
SIO2：1.5；
Fe2O3：0.91；
Cao：0.25；
Mgo：0.18；
Na2O：0.06；
soft clay: AI2O 3: 32.4 of the total weight of the mixture;
SIO2：51.76；
Fe2O3：2.61；
Cao：0.18；
Mgo：2.66；
Na2O：0.32；
TiO2：0.31；
silicon oxide micro powder: AI2O 3: 1.28;
SIO2：95.78；
Fe2O3：0.1；
Cao：0.21；
Mgo：0.36；
C：2.16；
K2O：0.11；
alumina micropowder: AI2O 3: 99.835, respectively;
SIO2： 0.025；
Fe2O3：0.03；
Cao：0.03；
Mgo：0.04；
Na2O：0.03；
acidic aluminum phosphate: al2O 3: 16.1;
H2O：17.01；
P2O5：66.89。
as a preferred technical scheme, the bonding agent is an environment-friendly inorganic cementing agent.
Example two: a novel refractory brick material comprises hard clay, high-alumina clinker, sintered mullite, fused mullite, brown corundum, soft clay, silicon oxide micro powder, aluminum oxide micro powder and acidic aluminum phosphate, and comprises the following components:
hard clay: 12 percent;
high-alumina clinker aggregate: 23 percent;
sintering mullite: 6 percent;
electrically melting mullite: 6 percent;
brown corundum: 18 percent;
soft clay: 15 percent;
silicon oxide micro powder: 5 percent;
alumina micropowder: 7 percent;
acidic aluminum phosphate: 8 percent.
The invention also provides a preparation process of the novel refractory brick material, which comprises the following steps:
s1) cleaning: firstly, cleaning a forced stirrer;
s2) proportioning: accurately weighing the semi-finished raw materials by using an electronic batching scale according to the weight required by the batching list;
s3) mixing: and pouring the semi-finished raw materials into a forced mixer in sequence, and dry-mixing for 5-8 min. Discharging the premix out of the stirrer, and subpackaging into bags for later use;
s4) preparing materials: packaging the binding agent into 200kg per barrel;
s5) weighing the premix, adding the binder into the premix according to the proportion, and stirring for 15-20min to build the refractory bricks, wherein the proportion of the premix to the binder is 2: 1;
the semi-finished product comprises the following raw materials: the semi-finished product comprises the following raw materials of hard clay, high-alumina clinker, sintered mullite, fused mullite, brown corundum, soft clay, silicon oxide micro powder, alumina micro powder and acidic aluminum phosphate, wherein the raw materials of the semi-finished product comprise:
hard clay: AI2O 3: 45.67, respectively;
SIO2： 46.56；
Fe2O3：1.2；
K2O：0.43；
Cao：0.19；
TiO2：1.99；
Mgo：0.18；
Na2O：0.08；
high-alumina clinker aggregate: AI2O 3: 85.69;
SIO2：17.96；
Fe2O3：1.1；
Cao：0.6；
Mgo：0.2；
sintering mullite: AI2O 3: 70.18, respectively;
SIO2： 32.66；
Fe2O3：0.61-1.68；
Cao：0.3；
Mgo：0.22；
electrically melting mullite: AI2O 3: 68.54, respectively;
SIO2：21.3；
Fe2O3： 0.38；
brown corundum: AI2O 3: 97.1;
SIO2：1.8；
Fe2O3：0.91；
Cao：0.25；
Mgo：0.18；
Na2O：0.06；
soft clay: AI2O 3: 32.4 of the total weight of the mixture;
SIO2：51.76；
Fe2O3：2.61；
Cao：0.18；
Mgo：2.66；
Na2O：0.32；
TiO2：0.31；
silicon oxide micro powder: AI2O 3: 1.28;
SIO2：95.78；
Fe2O3：0.1；
Cao：0.21；
Mgo：0.36；
C：2.16；
K2O：0.11；
alumina micropowder: AI2O 3: 99.56;
SIO2：0.16；
Fe2O3：0.03；
Cao：0.03；
Mgo：0.04；
Na2O：0.03；
acidic aluminum phosphate: al2O 3: 16.1;
H2O：17.01；
P2O5：66.89。
as a preferred technical scheme, the bonding agent is an environment-friendly inorganic cementing agent.
The invention has the advantages that: the novel refractory brick material enables the refractory material and the preparation process thereof to have good structural stability and air tightness, can experience various chemical and physical actions in a high-temperature environment, ensures the safe and normal operation of thermal equipment, achieves the requirements of long service life, high efficiency and low consumption, and simultaneously has good masonry effect.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. A novel refractory brick material is characterized in that: the material comprises hard clay, high-alumina clinker, sintered mullite, fused mullite, brown corundum, soft clay, silicon oxide micro powder, alumina micro powder and acidic aluminum phosphate, and comprises the following components:
hard clay: 8% -12%;
high-alumina clinker aggregate: 10% -60%;
sintering mullite: 1% -6%;
electrically melting mullite: 1% -6%;
brown corundum: 18% -22%;
soft clay: 10% -15%;
silicon oxide micro powder: 1% -5%;
alumina micropowder: 1% -7%;
acidic aluminum phosphate: 8 to 28 percent.
2. The preparation process of the novel refractory brick material is characterized by comprising the following steps of:
s1) cleaning: firstly, cleaning a forced stirrer;
s2) proportioning: accurately weighing the semi-finished raw materials by using an electronic batching scale according to the weight required by the batching list;
s3) mixing: and pouring the semi-finished raw materials into a forced mixer in sequence, and dry-mixing for 5-8 min.
3. Discharging the premix out of the stirrer, and subpackaging into bags for later use;
s4) preparing materials: packaging the binding agent into 200kg per barrel;
s5) weighing the premix, adding the bonding agent into the premix according to the proportion, and stirring for 15-20min to build the refractory bricks.
4. The process for preparing a novel refractory according to claim 2, wherein: the semi-finished product comprises the following raw materials: the semi-finished product comprises the following raw materials of hard clay, high-alumina clinker, sintered mullite, fused mullite, brown corundum, soft clay, silicon oxide micro powder, alumina micro powder and acidic aluminum phosphate, wherein the raw materials of the semi-finished product comprise:
hard clay: AI2O 3: 45.67-59.85;
SIO2：36.08-46.56；
Fe2O3：1.2；
K2O：0.43；
Cao：0.19；
TiO2：1.99；
Mgo：0.18；
Na2O：0.08；
high-alumina clinker aggregate: AI2O 3: 80.14-85.69;
SIO2：10.78-17.96；
Fe2O3：1.1；
Cao：0.6；
Mgo：0.2；
sintering mullite: AI2O 3: 66.21-70.18;
SIO2：27.63-32.66；
Fe2O3：0.61-1.68；
Cao：0.3；
Mgo：0.22；
electrically melting mullite: AI2O 3: 66.22-68.54;
SIO2：31.6-21.3；
Fe2O3：0.17-0.38；
brown corundum: AI2O 3: 95.4-97.1;
SIO2：1.5-1.8；
Fe2O3：0.91；
Cao：0.25；
Mgo：0.18；
Na2O：0.06；
soft clay: AI2O 3: 32.4 of the total weight of the mixture;
SIO2：51.76；
Fe2O3：2.61；
Cao：0.18；
Mgo：2.66；
Na2O：0.32；
TiO2：0.31；
silicon oxide micro powder: AI2O 3: 1.28;
SIO2：95.78；
Fe2O3：0.1；
Cao：0.21；
Mgo：0.36；
C：2.16；
K2O：0.11；
alumina micropowder: AI2O 3: 99.5-99.81;
SIO2：0.16-0.025；
Fe2O3：0.03；
Cao：0.03；
Mgo：0.04；
Na2O：0.03；
acidic aluminum phosphate: al2O 3: 16.1;
H2O：17.01；
P2O5：66.89。
5. the process for preparing a novel refractory according to claim 2, wherein: the binding agent is an environment-friendly inorganic cementing agent.
CN202011147452.4A 2020-10-23 2020-10-23 Novel refractory brick material and preparation process thereof Pending CN112573908A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115073192A (en) * 2022-07-26 2022-09-20 黑龙江建龙钒钛研究院有限公司 Masonry refractory material capable of prolonging service life of melting furnace
CN115108810A (en) * 2022-06-01 2022-09-27 江苏苏嘉集团新材料有限公司 Manufacturing method with protection effect for processing refractory bricks

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CN105967705A (en) * 2016-05-11 2016-09-28 枞阳县海力机械制造有限责任公司 Clay-based refractory brick for coal gas producer
CN111470874A (en) * 2020-04-28 2020-07-31 北京诠道科技有限公司 High-temperature-resistant dry powder daub, preparation method and use method thereof, masonry material and application

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GB1244895A (en) * 1968-10-14 1971-09-02 Dresser Ind Alumina refractory brick
CN101544504A (en) * 2009-05-08 2009-09-30 巩义市金岭耐火材料有限公司 Phosphate-bonded aluminum silicon carbide brick and preparation method thereof
CN102303975A (en) * 2011-08-01 2012-01-04 郑州东方科技耐火材料有限公司 Ultralow-porosity refractory brick and preparation method thereof
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CN115108810A (en) * 2022-06-01 2022-09-27 江苏苏嘉集团新材料有限公司 Manufacturing method with protection effect for processing refractory bricks
CN115073192A (en) * 2022-07-26 2022-09-20 黑龙江建龙钒钛研究院有限公司 Masonry refractory material capable of prolonging service life of melting furnace

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Application publication date: 20210330