Specifications
magnesite-chrome brick1.Magnesite chrome brick of alkaline slag erosion resistance is strong,
2. good thermal shock resistant
Magnesite-chrome?brick
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Product?usages
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Used?for?building?steel?furnace,?furnace?refining?furnace,?non-ferrous?metal?smelting?furnace,?cement?kiln,?glass?kiln,?etc.
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Production?process
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Production?technology?of?calcined?magnesite?chrome?brick?and?magnesite?chrome?bricks?in?line.?In?order?to?eliminate
?the?bricks?in?burning?process?because?of?MgO?style?and?Cr2O3,?Al2O3,?or?directly?combined?magnesite?chrome?
brick.?The?main?raw?material?of?manufacturing?magnesite chrome?brick?is?sintered?magnesite?and?chromite.?Magnesia?raw?material?purity?as?high?as?possible,?chromite?
chemical?composition?requirement?is:?the?Cr2O3:30?~?45%,?CaO:?1.0?~?1.5%?or?less.
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Classification
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Brick?according?to?the?physical?and?chemical?indicators?divided?into?MGe?-?20,?MGe?-?16,?MGe?-?12,?MGe?-?8?four?grades
Refractory?temperature:?1580?~?1770?°C?(°C)
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Technical?index
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Kind | direct-bonded?magnesia-chrome?bricks | semi-rebonded?magnesite-chrome?brick | ||||||||||
? | MGe8A | MGe8B | MGe12A | MGe12B | MGe16A | MGe16B | MGe18A | MGe18B | MGe16A | MGe16B | MGe20A | MGe20B |
MgO??% ≥ | 74 | 74 | 66 | 66 | 60 | 60 | 58 | 58 | 60 | 60 | 55 | 55 |
Cr2O3% ≥ | 8 | 8 | 12 | 12 | 16 | 16 | 18 | 18 | 16 | 16 | 20 | 20 |
SiO2?% ≤ | 1.5 | 2.0 | 1.5 | 2.0 | 1.5 | 2.0 | 1.5 | 2.0 | 1.5 | 1.8 | 1.5 | 1.8 |
apparent?porosity% ≤ | 18? | ?18 | 18? | 18? | ?18 | 18? | ?18 | ?18 | ?17 | ?17 | 17 | 17? |
cold?crushing?strengthMPa ≥ | 40? | 35? | ?40 | 35? | 40? | 35? | 40 | 35? | ?40 | ?35 | 40? | 35? |
Load?softening?point°C? ≥ | 1660? | ?1600 | 1660? | 1600? | 1660? | 1600? | 1660? | 1600? | 1750? | 1700? | 1750? | ?1700 |
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?Photo
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