Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a calcium oxide production technology. According to the calcium oxide production technology, calcium carbonate ores serve as the raw materials, a specific activating agent is added, the calcination time can be greatly shortened, and energy conservation and environment protection are achieved; in addition, obtained calcium oxide is high in purity and activity. The calcium oxide production technology comprises the steps that the calcium carbonate ores are selected and smashed into particles with the particle size ranging from 40 mm to 80 mm; calcination equipment is constructed, and a gas-burning shaft furnace lime kiln is selected; calcination preheating is performed, wherein mirabilite solutions are evenly sprayed on the ore blocks, the mass of the sprayed mirabilite solutions accounts for 3%-3.8% of that of the ores, and then the ore blocks are fed into the gas-burning shaft furnace lime kiln to be preheated at the temperature of 300 DEG C-380 DEG C for 30-50 min; after preheating is performed, the calorific value of gas is 860*4190 KJ/m<3>, the flow rate is 7000 m<3>/h, and calcination is performed for 1-1.5 h; the finished products are recycled.
The invention discloses a calcium oxide production technology. According to the calcium oxide production technology, calcium carbonate ores serve as the raw materials, a specific activating agent is added, the calcination time can be greatly shortened, and energy conservation and environment protection are achieved; in addition, obtained calcium oxide is high in purity and activity. The calcium oxide production technology comprises the steps that the calcium carbonate ores are selected and smashed into particles with the particle size ranging from 40 mm to 80 mm; calcination equipment is constructed, and a gas-burning shaft furnace lime kiln is selected; calcination preheating is performed, wherein mirabilite solutions are evenly sprayed on the ore blocks, the mass of the sprayed mirabilite solutions accounts for 3%-3.8% of that of the ores, and then the ore blocks are fed into the gas-burning shaft furnace lime kiln to be preheated at the temperature of 300 DEG C-380 DEG C for 30-50 min; after preheating is performed, the calorific value of gas is 860*4190 KJ/m<3>, the flow rate is 7000 m<3>/h, and calcination is performed for 1-1.5 h; the finished products are recycled.
Calcium oxide production technology
TANG SANGSANG (Autor:in)
20.01.2016
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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