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Magnesia-carbon bricks are made of high melting point alkaline oxide magnesia (melting point °C) and high melting point carbon materials that are difficult to be infiltrated by slag as raw materials, and various non-oxide additives are added. Non-burning carbon composite refractory material combined with carbon binder.
Magnesia-carbon bricks are mainly used for the lining of converters, AC electric arc furnaces, DC electric arc furnaces, and the slag line of ladle.
As a composite refractory material, magnesia-carbon brick effectively utilizes the strong slag erosion resistance of magnesia and the high thermal conductivity and low expansion of carbon, which compensates for the biggest disadvantage of poor spalling resistance of magnesia.
Its main features are: good high temperature resistance, strong slag resistance, good thermal shock resistance, and low high temperature creep.
application
The refractory materials used in the early ladle slag line were directly combined with magnesia-chrome bricks, electrofused and then combined with high-quality alkaline bricks such as magnesia-chrome bricks. After the MgO-C brick was successfully used in the converter, the MgO-C brick was also used in the refining ladle slag line, and good results were obtained. China and Japan generally use resin-bonded MgO-C bricks with a carbon content of 12% to 20%, while Europe mostly uses asphalt-bonded MgO-C bricks, and the carbon content is generally around 10%.
The Kokura Steel Plant of Sumitomo Metal Corporation of Japan uses MgO-C bricks with MgO content of 83% and C content of 14-17% in the VAD slag line instead of directly bonded magnesia-chrome bricks. The life of the slag line is increased from 20 times to 30 times. -32 times.
Japan Sendai Iron and Steel Plant LF refining ladle, using MgO-C bricks instead of magnesia-chrome bricks, the life of the slag line has been increased from 20-25 times to 40 times, and good results have been achieved.
Since the use of MgO-C bricks instead of magnesia-chrome bricks for China&#;s refined ladle slag line bricks, the comprehensive use effect is obvious. The 300t ladle slag line of Baosteel Co., Ltd. has been using MT-14A magnesia-carbon bricks since July , and the life of the slag line is maintained at more than 100 times; the 150t electric furnace ladle slag line uses low-carbon magnesia-carbon bricks to smelt cord steel. &#; ~ &#;, and achieved obvious results.
After research, the MgO-C brick made of the mixture of fused magnesia and sintered magnesia, plus 15% phosphorus flake graphite and a small amount of magnesium aluminum alloy as antioxidant, has a very good use effect, and the capacity is 100 tons of LF. Compared with MgO-C bricks with a C content of 18% without antioxidants, the damage rate is reduced by 20-30%, and the average erosion rate is 1.2-1.3mm/furnace.
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May 31,
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The article describes in detail the process of how to make magnesium carbon bricks. What&#;s more, the article also expresses some other issues related to magnesia carbon bricks. Weclcome to visit our factory to see magnesium carbon brick product process.
The steps in the production process of MgO-C bricks are described here. First, the refractory raw materials are graded into coarse, medium, and fine sizes and are classified as necessary. Next, they are mixed and kneaded with a binder in pre-determined blend proportions by particle size. The kneaded mixture is press formed into bricks.
By a magnesia-carbon brick there is understood a brick based mainly on the components burned magnesite, carbon in the amount of typically 5&#;30% carbon by weight and a suitable binder. Magnesia-carbon bricks are used in the wear lining of a converter for steel production, and are substantially more resistant to wear than magnesite bricks in which the percentage of carbon used is not so high. The wear lining of a converter can, depending on the price of the bricks, be wholly or partly constructed from magnesia-carbon bricks, especially at the location of the trunnions of the converter, where the wear is greatest.
Magnesia Carbon Brick for sale
Uniaxial forming with an oil press or a friction press is normally used as the pressing equipment. The magnesia aggregate and graphite in MgO-C bricks show orientability depending on the forming direction of the press. The strength and thermal conductivity of MgO-C bricks show anisotropy . It is hence important to consider the forming direction of bricks when laying the bricks. A cold isostatic press (CIP) with small anisotropy is also used for the production of large refractory products such as bottom blowing tuyere bricks and taphole bricks.
Formed bricks are dried to remove moisture and other volatile components, processed, and coated as needed, visually inspected for cracks, chips, and other defects, and dispatched after removing defective bricks.
MgO-C (magnesia-carbon) refractories are widely used in several steelmaking linings. These refractories are exposed to extreme stress due to high temperatures (T > °C) required to cause the metallurgical reactions. These working conditions produced refractory wear through various related processes. The different types of degradation that the material suffers can be from thermochemical or thermomechanical origin.
a. preparing a mixture comprising:
1. burned magnesite
2. carbon
3. a binder solution comprising:
3.1 pre-condensed novolak resin
3.2 a solvent for this novolak resin.
4. a hardener for the resin.
b. pressing a brick from the mixture.
The method also provides bricks produced by the method and a converter having a wear lining consisting at least partly of such bricks.
FAQ:
How are magnesia carbon bricks made?
The traditional magnesia carbon brick manufactured by the synthetic tar binder in the cold mixing process is hardened during the process of tar damage and the necessary strength is obtained, thus forming isotropic glassy carbon.
What is the use of magnesia carbon bricks?
MgO-C (magnesia-carbon) refractory bricks are widely used in steel industry, the primary consumer of refractory linings, such as basic oxygen furnaces, electric arc furnaces, and ladle furnaces.
What is the raw material for magnesia carbon bricks?
Sea water magnesia is mainly used in SAIL as the main raw material for manufacturing of magnesia carbon bricks.
What is magnesia carbon brick?
Magnesia-Carbon brick is resin-bonded brick made from dead-burned or fused magnesia and graphite. Anti-oxidant is added if required. Our control over bonding agents mean that these products are classed as eco friendly in terms of steel production.
In conclusion, Welcome to learn how to make magnesia carbon bricks and learn other information about magnesia carbon bricks. If you are interested in other refractory products and production processes, please feel free to browse our website or visit our factory.
Magnesia Carbon Bricks
Magnesia-carbon bricks are made of high melting point alkaline oxide magnesia (melting point °C) and high melting point carbon materials that are difficult to be infiltrated by slag as raw materials, and various non-oxide additives are added. Non-burning carbon composite refractory materialrefractory material combined with carbon binder.
Magnesia-carbon bricks are mainly used for the lining of converters, AC electric arc furnaces, DC electric arc furnaces, and the slag line of ladle.
As a composite refractory material, magnesia-carbon brick effectively utilizes the strong slag erosion resistance of magnesia and the high thermal conductivity and low expansion of carbon, which compensates for the biggest disadvantage of poor spalling resistance of magnesia.
Its main features are: good high temperature resistance, strong slag resistance, good thermal shock resistance, and low high temperature creep.
application
The refractory materials used in the early ladle slag line were directly combined with magnesia-chrome bricks, electrofused and then combined with high-quality alkaline bricks such as magnesia-chrome bricks. After the MgO-C brick was successfully used in the converter, the MgO-C brick was also used in the refining ladle slag line, and good results were obtained. China and Japan generally use resin-bonded MgO-C bricks with a carbon content of 12% to 20%, while Europe mostly uses asphalt-bonded MgO-C bricks, and the carbon content is generally around 10%.
The Kokura Steel Plant of Sumitomo Metal Corporation of Japan uses MgO-C bricks with MgO content of 83% and C content of 14-17% in the VAD slag line instead of directly bonded magnesia-chrome bricks. The life of the slag line is increased from 20 times to 30 times. -32 times.
Japan Sendai Iron and Steel Plant LF refining ladle, using MgO-C bricks instead of magnesia-chrome bricks, the life of the slag line has been increased from 20-25 times to 40 times, and good results have been achieved.
Since the use of MgO-C bricks instead of magnesia-chrome bricks for China&#;s refined ladle slag line bricks, the comprehensive use effect is obvious. The 300t ladle slag line of Baosteel Co., Ltd. has been using MT-14A magnesia-carbon bricks since July , and the life of the slag line is maintained at more than 100 times; the 150t electric furnace ladle slag line uses low-carbon magnesia-carbon bricks to smelt cord steel. &#; ~ &#;, and achieved obvious results.
After research, the MgO-C brick made of the mixture of fused magnesia and sintered magnesia, plus 15% phosphorus flake graphite and a small amount of magnesium aluminum alloy as antioxidant, has a very good use effect, and the capacity is 100 tons of LF. Compared with MgO-C bricks with a C content of 18% without antioxidants, the damage rate is reduced by 20-30%, and the average erosion rate is 1.2-1.3mm/furnace.
annesheldon
·
Follow
3 min read
·
May 31,
--
The article describes in detail the process of how to make magnesium carbon bricks. What&#;s more, the article also expresses some other issues related to magnesia carbon bricks. Weclcome to visit our factory to see magnesium carbon brick product process.
The steps in the production process of MgO-C bricks are described here. First, the refractory raw materials are graded into coarse, medium, and fine sizes and are classified as necessary. Next, they are mixed and kneaded with a binder in pre-determined blend proportions by particle size. The kneaded mixture is press formed into bricks.
By a magnesia-carbon brick there is understood a brick based mainly on the components burned magnesite, carbon in the amount of typically 5&#;30% carbon by weight and a suitable binder. Magnesia-carbon bricks are used in the wear lining of a converter for steel production, and are substantially more resistant to wear than magnesite bricks in which the percentage of carbon used is not so high. The wear lining of a converter can, depending on the price of the bricks, be wholly or partly constructed from magnesia-carbon bricks, especially at the location of the trunnions of the converter, where the wear is greatest.
Magnesia Carbon Brick for sale
Uniaxial forming with an oil press or a friction press is normally used as the pressing equipment. The magnesia aggregate and graphite in MgO-C bricks show orientability depending on the forming direction of the press. The strength and thermal conductivity of MgO-C bricks show anisotropy . It is hence important to consider the forming direction of bricks when laying the bricks. A cold isostatic press (CIP) with small anisotropy is also used for the production of large refractory products such as bottom blowing tuyere bricks and taphole bricks.
Formed bricks are dried to remove moisture and other volatile components, processed, and coated as needed, visually inspected for cracks, chips, and other defects, and dispatched after removing defective bricks.
MgO-C (magnesia-carbon) refractories are widely used in several steelmaking linings. These refractories are exposed to extreme stress due to high temperatures (T > °C) required to cause the metallurgical reactions. These working conditions produced refractory wear through various related processes. The different types of degradation that the material suffers can be from thermochemical or thermomechanical origin.
a. preparing a mixture comprising:
1. burned magnesite
2. carbon
3. a binder solution comprising:
3.1 pre-condensed novolak resin
3.2 a solvent for this novolak resin.
4. a hardener for the resin.
b. pressing a brick from the mixture.
The method also provides bricks produced by the method and a converter having a wear lining consisting at least partly of such bricks.
FAQ:
How are magnesia carbon bricks made?
The traditional magnesia carbon brick manufactured by the synthetic tar binder in the cold mixing process is hardened during the process of tar damage and the necessary strength is obtained, thus forming isotropic glassy carbon.
What is the use of magnesia carbon bricks?
MgO-C (magnesia-carbon) refractory bricks are widely used in steel industry, the primary consumer of refractory linings, such as basic oxygen furnaces, electric arc furnaces, and ladle furnaces.
What is the raw material for magnesia carbon bricks?
Sea water magnesia is mainly used in SAIL as the main raw material for manufacturing of magnesia carbon bricks.
What is magnesia carbon brick?
Magnesia-Carbon brick is resin-bonded brick made from dead-burned or fused magnesia and graphite. Anti-oxidant is added if required. Our control over bonding agents mean that these products are classed as eco friendly in terms of steel production.
In conclusion, Welcome to learn how to make magnesia carbon bricks and learn other information about magnesia carbon bricks. If you are interested in other refractory products and production processes, please feel free to browse our website or visit our factory.
Magnesia Carbon Bricks