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Comprehensive utilization method of low-grade magnesite
The invention provides a comprehensive utilization method of low-grade magnesite. The comprehensive utilization method comprises the steps: pretreated low-grade magnesite is roasted in a flash kiln; high-temperature flue gas obtained by roasting is sent to a waste heat boiler to provide heat energy for power generation on one hand and serves as a combustion improver raw material or other raw materials used in other processes on the other hand; the light calcined powder obtained by roasting is physically sorted according to the content of magnesium oxide, and the sorted and classified light calcined powder is conveyed to a medium-grade kiln, a soda ash process, a light magnesium carbonate manufacturing process and a corrugated magnesium board process to serve as production raw materials; carbon dioxide produced by the medium-grade kiln is reduced, on one hand, obtained coal gas is used as a fuel, and on the other hand, the coal gas is sent to the waste heat boiler to provide heat energyfor power generation. The comprehensive utilization method of the low-grade magnesite has the characteristics of high product quality, quite low pollution, quite high energy-saving degree, effectiveutilization of low-grade mineral resources, huge economic benefits and the like, and can be widely applied to the field of minerals.
本发明提供一种低品位菱镁矿综合利用方法，包括步骤：在闪速窑内对经过预处理的低品位菱镁矿焙烧；焙烧得到高温烟气一方面发送至余热锅炉为发电提供热能，另一方面作为其它工艺所使用的助燃剂原料或其它原料；焙烧得到轻烧粉根据氧化镁含量进行物理选料，选料分类后的轻烧粉被输送至中档窑、纯碱工艺、轻质碳酸镁制作工艺、波镁板工艺，作为生产原料；对于中档窑产生的二氧化碳进行还原，得到的煤气一方面作为燃料，另一方面发送至余热锅炉为发电提供热能。本发明提供一种低品位菱镁矿综合利用方法具有产品质量高、污染非常低、节能程度非常高、有效利用低品位矿产资源、经济效益巨大等特点，可广泛应用于矿产领域。
Comprehensive utilization method of low-grade magnesite
The invention provides a comprehensive utilization method of low-grade magnesite. The comprehensive utilization method comprises the steps: pretreated low-grade magnesite is roasted in a flash kiln; high-temperature flue gas obtained by roasting is sent to a waste heat boiler to provide heat energy for power generation on one hand and serves as a combustion improver raw material or other raw materials used in other processes on the other hand; the light calcined powder obtained by roasting is physically sorted according to the content of magnesium oxide, and the sorted and classified light calcined powder is conveyed to a medium-grade kiln, a soda ash process, a light magnesium carbonate manufacturing process and a corrugated magnesium board process to serve as production raw materials; carbon dioxide produced by the medium-grade kiln is reduced, on one hand, obtained coal gas is used as a fuel, and on the other hand, the coal gas is sent to the waste heat boiler to provide heat energyfor power generation. The comprehensive utilization method of the low-grade magnesite has the characteristics of high product quality, quite low pollution, quite high energy-saving degree, effectiveutilization of low-grade mineral resources, huge economic benefits and the like, and can be widely applied to the field of minerals.
本发明提供一种低品位菱镁矿综合利用方法，包括步骤：在闪速窑内对经过预处理的低品位菱镁矿焙烧；焙烧得到高温烟气一方面发送至余热锅炉为发电提供热能，另一方面作为其它工艺所使用的助燃剂原料或其它原料；焙烧得到轻烧粉根据氧化镁含量进行物理选料，选料分类后的轻烧粉被输送至中档窑、纯碱工艺、轻质碳酸镁制作工艺、波镁板工艺，作为生产原料；对于中档窑产生的二氧化碳进行还原，得到的煤气一方面作为燃料，另一方面发送至余热锅炉为发电提供热能。本发明提供一种低品位菱镁矿综合利用方法具有产品质量高、污染非常低、节能程度非常高、有效利用低品位矿产资源、经济效益巨大等特点，可广泛应用于矿产领域。
Comprehensive utilization method of low-grade magnesite
一种低品位菱镁矿综合利用方法
WANG XUANFU (author) / WU JIANGUO (author) / DENG SHOUGUO (author)
2020-06-16
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
C01B
NON-METALLIC ELEMENTS
,
Nichtmetallische Elemente
/
C01D
Verbindungen der Alkalimetalle, d.h. des Lithiums, Natriums, Kaliums, Rubidiums, Cäsiums oder Franciums
,
COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
/
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
C05D
INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C
,
Anorganische, nicht von den Unterklassen C05B, C05C umfasste Düngemittel
/
C10L
FUELS NOT OTHERWISE PROVIDED FOR
,
Anderweitig nicht vorgesehene Brennstoffe
/
F22B
Verfahren der Dampferzeugung
,
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