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[S:1]([O-:5])([O-:4])(=[O:3])=[O:2].[Na+:6].[Na+].[C:8](=[O:11])([O-:10])[O-:9].[Na+].[Na+]>>[S:1]([O-:5])([O-:4])(=[O:3])=[O:2].[Na+:6].[Na+:6].[C:8](=[O:9])([O-:11])[O-:10].[Na+:6].[Na+:6]참가 물질
실험 절차
The spent leaching liquor containing sodium sulphate and non-reacted sodium carbonate in an approximately 7/1 weight ratio is subjected to fractional crystallization by cooling the said solution to 18 degrees Centigrade to precipitate deca-hydrated sodium sulfate Na2SO4.10 H2O and leaving a sodium sulfate-sodium carbonate saturated solution containing about equal parts of both said chemical species. The crystallized solid, that accounts for the 59% by weight of the spent solution, is separated from the saturated solution by any of the usual solid-liquid separation techniques. The saturated solution resulting from the solid-liquid separation, that accounts for the remaining 41% by weight of the spent solution, is reconditioned by diluting every part of the solution with 4 parts of fresh water and reconditioning it with soda ash for recycling to the celestite leaching stage.
후처리
- customis subjected to fractional crystallization
- temperatureby cooling the said solution to 18 degrees Centigrade
- customto precipitate deca-hydrated sodium sulfate Na2SO4
출처 및 근거
- ORD 기록
- ord-8d8a6297fb64403187231b578cfaca49
- 출처 데이터셋
- uspto-grants-2000_12
- 특허 번호
- US06159436
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