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The invention discloses a calcite calcination method and equipment. According to the calcite calcination method, the calcite is used as raw material, the calcite is calcinated by a special vacuum sealed calcinator, CO2 gas and active calcium oxide are sublimated out, the CO2 gas is further aspirated out through a vacuum pump and is conveyed to a matched full-automatic manufacturing device for solid carbon dioxide through a pipeline, the CO2 gas is transformed into colorless liquid through strong pressure and condensation, then decompression is conducted, the CO2 gas evaporates quickly, and the solid carbon dioxide finished product is formed through the expansion of the CO2 gas. The active calcium oxide and ferrosilicon powders are mixed uniformly according to a weight proportion of 3:1, then the mixture is guided into a vacuum distillation furnace to conduct vacuum thermal reductive reaction, the mixture is vaporized through reduction, replacement and sublimation, calcium vapor is released out, the calcium vapor is collected and cooled, and calcium metal solid body and calcium silicate (CaSiO3) finished product are obtained. The calcite calcination method and equipment have the advantages that the problem that lime calcination through a local method is polluted by furnace gas of coal and fuel and the like is solved, the CO2 is recycled effectively, dry ice product is manufactured, the waste is turned into wealth, the quick lime is further made into the calcium metal, and the additional output value of the product is increased.
The invention discloses a calcite calcination method and equipment. According to the calcite calcination method, the calcite is used as raw material, the calcite is calcinated by a special vacuum sealed calcinator, CO2 gas and active calcium oxide are sublimated out, the CO2 gas is further aspirated out through a vacuum pump and is conveyed to a matched full-automatic manufacturing device for solid carbon dioxide through a pipeline, the CO2 gas is transformed into colorless liquid through strong pressure and condensation, then decompression is conducted, the CO2 gas evaporates quickly, and the solid carbon dioxide finished product is formed through the expansion of the CO2 gas. The active calcium oxide and ferrosilicon powders are mixed uniformly according to a weight proportion of 3:1, then the mixture is guided into a vacuum distillation furnace to conduct vacuum thermal reductive reaction, the mixture is vaporized through reduction, replacement and sublimation, calcium vapor is released out, the calcium vapor is collected and cooled, and calcium metal solid body and calcium silicate (CaSiO3) finished product are obtained. The calcite calcination method and equipment have the advantages that the problem that lime calcination through a local method is polluted by furnace gas of coal and fuel and the like is solved, the CO2 is recycled effectively, dry ice product is manufactured, the waste is turned into wealth, the quick lime is further made into the calcium metal, and the additional output value of the product is increased.
Calcite calcination method and equipment
SONG KAIQUAN (author)
2015-10-28
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
CALCINATION REACTOR ARRANGEMENT, CALCINATION SYSTEM AND CALCINATION METHOD
| European Patent Office | 2024
| Springer Verlag | 2020
| Springer Verlag | 2020