Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Device and method for producing light calcined magnesia through five-stage suspension preheating out-of-kiln decomposition
The invention relates to the technical field of magnesite calcination, in particular to a device and method for producing light calcined magnesia through five-stage suspension preheating external decomposition, the device for producing light calcined magnesia comprises a raw material processing mechanism, a five-stage suspension preheating decomposition furnace mechanism, a rotary kiln mechanism, a grate cooler and a clinker grinding mechanism which are connected in sequence, the five-stage suspension preheating decomposing furnace mechanism comprises multiple stages of suspension preheaters and an out-of-kiln predecomposing furnace, the out-of-kiln predecomposing furnace is arranged between the last two stages of suspension preheaters, and tail gas generated by the out-of-kiln predecomposing furnace can be used by the raw material processing mechanism after being subjected to solid-gas separation through the stages of suspension preheaters. The device overcomes the limitation of existing equipment for producing light calcined magnesia by suspension calcination of magnesite on high gas flow rate, can perform suspension calcination at high gas flow rate, adopts negative pressure operation as a whole, is controllable in gas-material stroke, uniform in material sintering, adjustable and controllable in product activity, stable in quality, small in device heat loss and high in efficiency, and is suitable for large-scale production of light calcined magnesia. The tail gas emission is low.
本发明涉及菱镁矿煅烧技术领域，尤其是涉及一种五级悬浮预热窑外分解生产轻烧氧化镁的装置及方法，其中，生产轻烧氧化镁的装置，包括依次连接的生料处理机构、五级悬浮预热分解炉机构、回转窑机构、篦式冷却机和熟料粉磨机构，其中，五级悬浮预热分解炉机构包括多级悬浮预热器和窑外预分解炉，窑外预分解炉设置在最后两级悬浮预热器之间，且窑外预分解炉产生的尾气经各级悬浮预热器固气分离后可供生料处理机构使用。本发明克服了现有悬浮煅烧菱镁矿生产轻烧氧化镁设备对于高气体流速的限制，可以在较高的气体流速下进行悬浮煅烧，装置整体采用负压操作，气料行程可控，物料烧结均匀、产品活性可调可控、质量稳定，装置热量损失小、效率高，尾气排放低。
Device and method for producing light calcined magnesia through five-stage suspension preheating out-of-kiln decomposition
The invention relates to the technical field of magnesite calcination, in particular to a device and method for producing light calcined magnesia through five-stage suspension preheating external decomposition, the device for producing light calcined magnesia comprises a raw material processing mechanism, a five-stage suspension preheating decomposition furnace mechanism, a rotary kiln mechanism, a grate cooler and a clinker grinding mechanism which are connected in sequence, the five-stage suspension preheating decomposing furnace mechanism comprises multiple stages of suspension preheaters and an out-of-kiln predecomposing furnace, the out-of-kiln predecomposing furnace is arranged between the last two stages of suspension preheaters, and tail gas generated by the out-of-kiln predecomposing furnace can be used by the raw material processing mechanism after being subjected to solid-gas separation through the stages of suspension preheaters. The device overcomes the limitation of existing equipment for producing light calcined magnesia by suspension calcination of magnesite on high gas flow rate, can perform suspension calcination at high gas flow rate, adopts negative pressure operation as a whole, is controllable in gas-material stroke, uniform in material sintering, adjustable and controllable in product activity, stable in quality, small in device heat loss and high in efficiency, and is suitable for large-scale production of light calcined magnesia. The tail gas emission is low.
本发明涉及菱镁矿煅烧技术领域，尤其是涉及一种五级悬浮预热窑外分解生产轻烧氧化镁的装置及方法，其中，生产轻烧氧化镁的装置，包括依次连接的生料处理机构、五级悬浮预热分解炉机构、回转窑机构、篦式冷却机和熟料粉磨机构，其中，五级悬浮预热分解炉机构包括多级悬浮预热器和窑外预分解炉，窑外预分解炉设置在最后两级悬浮预热器之间，且窑外预分解炉产生的尾气经各级悬浮预热器固气分离后可供生料处理机构使用。本发明克服了现有悬浮煅烧菱镁矿生产轻烧氧化镁设备对于高气体流速的限制，可以在较高的气体流速下进行悬浮煅烧，装置整体采用负压操作，气料行程可控，物料烧结均匀、产品活性可调可控、质量稳定，装置热量损失小、效率高，尾气排放低。
Device and method for producing light calcined magnesia through five-stage suspension preheating out-of-kiln decomposition
一种五级悬浮预热窑外分解生产轻烧氧化镁的装置及方法
CHEN DANIAN (Autor:in) / NIE WANGFA (Autor:in)
15.11.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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