CN116813311A - Sintered magnesia-alumina-chrome refractory brick and manufacturing method thereof - Google Patents
Sintered magnesia-alumina-chrome refractory brick and manufacturing method thereof Download PDFInfo
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- CN116813311A CN116813311A CN202310679140.5A CN202310679140A CN116813311A CN 116813311 A CN116813311 A CN 116813311A CN 202310679140 A CN202310679140 A CN 202310679140A CN 116813311 A CN116813311 A CN 116813311A
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- alumina
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- 239000011449 brick Substances 0.000 title claims abstract description 50
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 60
- 239000000843 powder Substances 0.000 claims abstract description 35
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims abstract description 25
- 239000001095 magnesium carbonate Substances 0.000 claims abstract description 25
- 235000014380 magnesium carbonate Nutrition 0.000 claims abstract description 25
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims abstract description 25
- 238000003825 pressing Methods 0.000 claims abstract description 25
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 19
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000010304 firing Methods 0.000 claims abstract description 14
- 229910001586 aluminite Inorganic materials 0.000 claims abstract description 4
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 4
- 239000011651 chromium Substances 0.000 claims abstract description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 30
- 238000001035 drying Methods 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 25
- 238000002156 mixing Methods 0.000 claims description 18
- 239000000395 magnesium oxide Substances 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 13
- 238000001354 calcination Methods 0.000 claims description 12
- 238000000227 grinding Methods 0.000 claims description 10
- 239000011265 semifinished product Substances 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 8
- 238000010298 pulverizing process Methods 0.000 claims description 4
- 239000002918 waste heat Substances 0.000 claims description 4
- 239000004615 ingredient Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—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
- C04B35/047—Refractories from grain sized mixtures containing chromium oxide or chrome ore
-
- 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
-
- 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
- C04B35/62605—Treating the starting powders individually or as 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a sintered magnesia-alumina-chromite refractory brick and a manufacturing method thereof, which relate to the technical field of refractory bricks, and the materials used for manufacturing the refractory brick comprise magnesite, chrome ore, bauxite and bauxite; wherein, the magnesite comprises the following components: 65% -75%; the chromium ore comprises the following components: 5% -9%; the aluminite comprises the following components: 10% -15%; the bauxite comprises the following components: because 5% -10% of the main material of the magnesia-alumina-chromite refractory brick is magnesite, the magnesite after light firing is subjected to light firing treatment before being crushed, the magnesite after light firing can form powder, then the magnesite is pressed into regular shapes by pressing equipment, the powder ball after being pressed and formed is clinker, the clinker main material has the effect of high hardness on the whole refractory brick after being subjected to subsequent processing steps, and the using effect of the brick is improved.
Description
Technical Field
The invention relates to the technical field of refractory bricks, in particular to a sintered magnesia-alumina-chromite refractory brick and a manufacturing method thereof.
Background
Along with the promotion of the industrialization process in China, the scale of the high-temperature industry rapidly develops, the demand for refractory materials is also increasing, and the magnesia refractory bricks with MgO content of more than 75% are refractory bricks widely used in the high-temperature industry in China; the annual output of refractory bricks such as magnesia bricks, magnesia chrome bricks, magnesia aluminum bricks and the like is about 500 ten thousand tons.
The traditional sintered magnesia-alumina-chromia refractory brick is characterized in that materials required by preparation are subjected to crushing, grinding, mixing, pressing and sintering to form a refractory rotor, the raw materials are required to be crushed into the specification and the size during crushing, and then fine grinding is carried out, so that the following problems are brought by direct crushing of the raw materials:
the material is directly crushed when not subjected to the maturation treatment, and the material has certain brittleness, even though the material is ground, mixed, pressed and burnt, the conditions of reduced hardness and easy cracking caused by the brittleness can be caused between the materials, and therefore, the sintered magnesia-alumina-chrome refractory brick and the manufacturing method thereof are provided.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a sintered magnesia-alumina-chromite refractory brick and a manufacturing method thereof, so as to solve the problems in the prior art.
(II) technical scheme
In order to achieve the above purpose, the present invention provides the following technical solutions: the material used for the preparation of the sintered magnesia-alumina-chromite refractory brick comprises magnesite, chrome ore, bauxite and bauxite;
wherein, the magnesite comprises the following components: 65% -75%;
the chromium ore comprises the following components: 5% -9%;
the aluminite comprises the following components: 10% -15%;
the bauxite comprises the following components: 5% -10%.
A manufacturing method of a sintered magnesia-alumina-chrome refractory brick comprises the following steps: the manufacturing method comprises the following steps:
a01, raw material burning and pressing: pulverizing magnesite Dan Qingshao, and pressing into regular spheres by pressing equipment;
a02, smashing materials: sequentially crushing the pressed sphere material and other materials;
a03, vibrating and sieving the material: sequentially vibrating and screening the materials;
a04, fine grinding of powder: carrying out fine grinding treatment on each material;
a05, mixing ingredients: uniformly mixing the materials;
a06, press forming: pressing and forming the mixture;
a07, stacking and drying: stacking the formed semi-finished products and drying the stacked semi-finished products;
a08, firing: and firing the dried semi-finished product to finally obtain a finished product.
Preferably, according to A01, mgO is more than or equal to 97% and the firing temperature of the oil kiln is more than 2000 ℃ to obtain the volume density of 3.28g/cm 3 Is a high-purity magnesite.
Preferably, according to the method proposed in the step A01, the powder is pressed into regular sphere by a pressing device, and after the pressing is completed, the powder is allowed to stand still at normal temperature to be cooled to a normal temperature state.
Preferably, according to the proposal of the step A02-A03, the spherical magnesia is crushed into small blocks by a jaw crusher, then crushed to a vibrating screen by a double-roller crusher in one step, the raw materials are divided into 3-5mm, 1-3mm and 0-1mm magnesia by the vibrating screen, and the chrome ore, bauxite and bauxite are crushed and sieved in the same method.
Preferably, according to the method proposed in the step A04, four materials are sequentially placed into a Raymond mill, and the materials are finely ground into 200-mesh fine powder through the Raymond mill.
Preferably, according to the method proposed in the step A05, four kinds of fine powder are placed into a high-speed sand mixer to be mixed for 20-25min, and the mixing steps are as follows:
s1: adding 3-5mm and 1-3mm raw materials, adding 0-1mm and 200 mesh powder, and mixing in a high-speed sand mixer for 5-8min;
s2: the 200 mesh powder is coated on the surface of 1-3mm and 3-5mm, and the pulp is added and mixed for 10-20min.
Preferably, according to the method proposed in the step A06, the materials are pressed and molded by a double-disc friction press, the pressure of the press is 400-1000 tons, so that refractory bricks with different sizes are pressed and molded, and finally, the semi-finished bricks are formed.
Preferably, according to the method proposed in the step A07, the pressed semi-finished bricks are stacked in a material vehicle, the material vehicle enters a drying kiln for drying, the drying time is 10-11h, the drying temperature is above 120 ℃, and during drying, the heat in the kiln is from the waste heat transferred from a tunnel kiln.
Preferably, according to the proposal of the step A08, after the drying is finished, the material is sent into a tunnel kiln for calcination, the calcination temperature is not more than 1800 ℃ and the calcination time is not more than 100min.
(III) beneficial effects
Compared with the prior art, the invention provides the sintered magnesia-alumina-chromite refractory brick and the manufacturing method thereof, which have the following beneficial effects:
because the main material of the magnesia-alumina-chrome refractory brick is magnesite, the magnesite after being subjected to light firing treatment before being crushed can form powder, then the magnesite after light firing is pressed into regular shape by pressing equipment, the powder ball after being pressed and formed is clinker, and the clinker main material can lead the whole refractory brick to have high hardness after being subjected to subsequent processing steps, thereby increasing the use effect of the brick.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a technical scheme, as shown in figure 1, a sintered magnesia-alumina-chromite refractory brick is prepared from magnesite, chrome ore, bauxite and bauxite;
wherein, the magnesite comprises the following components: 65% -75%;
the chromium ore comprises the following components: 5% -9%;
the aluminite comprises the following components: 10% -15%;
the bauxite comprises the following components: 5% -10%.
A manufacturing method of a sintered magnesia-alumina-chrome refractory brick comprises the following steps: the manufacturing method comprises the following steps:
a01, raw material burning and pressing: pulverizing magnesite Dan Qingshao, and pressing into regular spheres by pressing equipment;
a02, smashing materials: sequentially crushing the pressed sphere material and other materials;
a03, vibrating and sieving the material: sequentially vibrating and screening the materials;
a04, fine grinding of powder: carrying out fine grinding treatment on each material;
a05, mixing ingredients: uniformly mixing the materials;
a06, press forming: pressing and forming the mixture;
a07, stacking and drying: stacking the formed semi-finished products and drying the stacked semi-finished products;
a08, firing: and firing the dried semi-finished product to finally obtain a finished product.
Specifically, according to the proposal of A01, mgO is more than or equal to 97 percent, the firing temperature of the oil kiln is more than 2000 ℃, and the volume density reaches 3.28g/cm 3 Is a high-purity magnesite.
Specifically, according to the method proposed in the step A01, the powder is pressed into regular spherical powder by pressing equipment, and the powder is allowed to stand still at normal temperature after the pressing is completed, so that the powder is cooled to a normal temperature state.
Specifically, according to the proposal of the step A02-A03, the spherical magnesia is crushed into small blocks by a jaw crusher, then the small blocks are crushed to a vibrating screen by a double-roller crusher, the raw materials are divided into 3-5mm, 1-3mm and 0-1mm magnesia by the vibrating screen, and the chrome ore, bauxite and bauxite are crushed and sieved by the same method.
Specifically, according to the method proposed in the step A04, four materials are sequentially placed into a Raymond mill, and the materials are finely ground into 200-mesh fine powder through the Raymond mill.
Specifically, according to the method proposed in the step A05, four kinds of fine powder are placed into a high-speed sand mixer to be mixed for 20-25min, and the mixing steps are as follows:
s1: adding 3-5mm and 1-3mm raw materials, adding 0-1mm and 200 mesh powder, and mixing in a high-speed sand mixer for 5-8min;
s2: the 200 mesh powder is coated on the surface of 1-3mm and 3-5mm, and the pulp is added and mixed for 10-20min.
Specifically, according to the method provided in the step A06, the materials are pressed and molded by a double-disc friction press, the pressure of the press is 400-1000 tons, so that refractory bricks with different sizes are pressed and molded, and finally, the semi-finished bricks are formed.
Specifically, according to the method proposed in the step A07, the pressed semi-finished bricks are stacked in a material vehicle, the material vehicle enters a drying kiln for drying, the drying time is 10-11h, the drying temperature is above 120 ℃, and during drying, the heat in the kiln is from the waste heat transferred from a tunnel kiln.
Specifically, according to the method provided in the step A08, after drying, the material is sent into a tunnel kiln for calcination, the calcination temperature is not more than 1800 ℃, and the calcination time is not more than 100min.
The working principle of the device is as follows:
the magnesite Dan Qingshao is prepared by pulverizing into powder, and sintering with an oil kiln at MgO not less than 97% and at a temperature above 2000 ℃ to obtain a bulk density of 3.28g/cm 3 Pressing the high-purity magnesite into regular spherical powder by pressing equipment, and standing at normal temperature after the pressing is finished to cool the powder into a normal temperature state;
crushing the pressed ball materials and other materials in sequence, crushing ball magnesite into small blocks by a jaw crusher, crushing the small blocks to a vibrating screen by a double-roller crusher in one step, dividing the raw materials into 3-5mm, 1-3mm and 0-1mm magnesite by the vibrating screen, and crushing and vibrating the chrome ore, bauxite and bauxite by the same method;
sequentially placing the four materials into a Raymond mill, and finely grinding the materials into 200-mesh fine powder by the Raymond mill;
mixing the four fine powders in a high-speed sand mixer for 20-25min, wherein the mixing steps are as follows:
s1: adding 3-5mm and 1-3mm raw materials, adding 0-1mm and 200 mesh powder, and mixing in a high-speed sand mixer for 5-8min;
s2: coating 200 mesh powder on 1-3mm and 3-5mm surface, adding paper pulp, and mixing for 10-20min;
according to the method, a double-disc friction press is adopted to press and shape the material, the pressure of the press is 400-1000 tons, so that refractory bricks with different sizes are pressed and formed, and finally, a semi-finished brick is formed;
stacking the pressed semi-finished bricks in a material vehicle, drying the material vehicle in a drying kiln for 10-11h at a drying temperature of above 120 ℃, wherein when the material vehicle is dried, heat in the kiln is from waste heat transferred from a tunnel kiln;
and after the drying is finished, the material is sent into a tunnel kiln for calcination, the calcination temperature is not more than 1800 ℃, and the calcination time is not more than 100min.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A sintered magnesia-alumina-chromia refractory brick is characterized in that: the materials used for preparation comprise magnesite, chrome ore, bauxite;
wherein, the magnesite comprises the following components: 65% -75%;
the chromium ore comprises the following components: 5% -9%;
the aluminite comprises the following components: 10% -15%;
the bauxite comprises the following components: 5% -10%.
2. The method for manufacturing a sintered magnesia-alumina-chrome refractory brick according to claim 1, wherein: the manufacturing method comprises the following steps:
a01, raw material burning and pressing: pulverizing magnesite Dan Qingshao, and pressing into regular spheres by pressing equipment;
a02, smashing materials: sequentially crushing the pressed sphere material and other materials;
a03, vibrating and sieving the material: sequentially vibrating and screening the materials;
a04, fine grinding of powder: carrying out fine grinding treatment on each material;
a05, mixing ingredients: uniformly mixing the materials;
a06, press forming: pressing and forming the mixture;
a07, stacking and drying: stacking the formed semi-finished products and drying the stacked semi-finished products;
a08, firing: and firing the dried semi-finished product to finally obtain a finished product.
3. The method for manufacturing a sintered magnesia-alumina-chrome refractory brick according to claim 2, wherein: according to A01, mgO is more than or equal to 97%, the firing temperature of the oil kiln is more than 2000 ℃, and the volume density reaches 3.28g/cm 3 Is a high-purity magnesite.
4. The method for manufacturing a sintered magnesia-alumina-chrome refractory brick according to claim 2, wherein: according to the method proposed in the step A01, regular spherical powder is pressed by pressing equipment, and the powder is kept still at normal temperature after the pressing is finished, so that the powder is cooled to be in a normal temperature state.
5. The method for manufacturing a sintered magnesia-alumina-chrome refractory brick according to claim 2, wherein: according to the proposal of the step A02-A03, the spherical magnesia is crushed into small blocks by a jaw crusher, then crushed to a vibrating screen by a double-roller crusher, the raw materials are divided into 3-5mm, 1-3mm and 0-1mm magnesia by the vibrating screen, and the chrome ore, bauxite and bauxite are crushed and vibrated in the same way.
6. The method for manufacturing a sintered magnesia-alumina-chrome refractory brick according to claim 2, wherein: and (3) sequentially placing the four materials into a Raymond machine according to the proposal of the step A04, and finely grinding the materials into 200-mesh fine powder by the Raymond machine.
7. The method for manufacturing a sintered magnesia-alumina-chrome refractory brick according to claim 2, wherein: according to the proposal of the step A05, four kinds of fine powder are put into a high-speed sand mixer for mixing for 20-25min, and the mixing steps are as follows:
s1: adding 3-5mm and 1-3mm raw materials, adding 0-1mm and 200 mesh powder, and mixing in a high-speed sand mixer for 5-8min;
s2: the 200 mesh powder is coated on the surface of 1-3mm and 3-5mm, and the pulp is added and mixed for 10-20min.
8. The fired magnesia alumina chrome refractory brick and the manufacturing method thereof according to claim 2, wherein: and (3) according to the proposal of the step A06, pressing and forming the material by adopting a double-disc friction press, wherein the pressure of the press is 400-1000 tons, so that refractory bricks with different sizes are pressed and formed, and finally, the semi-finished bricks are formed.
9. The fired magnesia alumina chrome refractory brick and the manufacturing method thereof according to claim 2, wherein: according to the method provided in the step A07, the pressed semi-finished bricks are stacked in a material vehicle, the material vehicle enters a drying kiln for drying, the drying time is 10-11h, the drying temperature is above 120 ℃, and when the semi-finished bricks are dried, the heat in the kiln is from the waste heat transmitted by a tunnel kiln.
10. The fired magnesia alumina chrome refractory brick and the manufacturing method thereof according to claim 2, wherein: and (3) according to the proposal of the step A08, after the drying is finished, the material is sent into a tunnel kiln for calcination, the calcination temperature is not more than 1800 ℃, and the calcination time is not more than 100 minutes.
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| CN202310679140.5A CN116813311A (en) | 2023-06-09 | 2023-06-09 | Sintered magnesia-alumina-chrome refractory brick and manufacturing method thereof |
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| CN202310679140.5A CN116813311A (en) | 2023-06-09 | 2023-06-09 | Sintered magnesia-alumina-chrome refractory brick and manufacturing method thereof |
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|---|---|---|---|---|
| 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 |
| CN112500136A (en) * | 2020-12-07 | 2021-03-16 | 海城利尔麦格西塔材料有限公司 | Production method of magnesia-chrome brick |
-
2023
- 2023-06-09 CN CN202310679140.5A patent/CN116813311A/en active Pending
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|---|---|---|---|---|
| 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 |
| CN112500136A (en) * | 2020-12-07 | 2021-03-16 | 海城利尔麦格西塔材料有限公司 | Production method of magnesia-chrome brick |
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| Title |
|---|
| 建材部技术情报标准研究所 编: "《来华技术座谈资料 日本旭硝子公司生产的水泥工业用那耐火材料以及矾土水泥和不定形耐火材料》", 30 April 1979, pages: 5 * |
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