Method for synthesizing calcium arsenate by oxygen pressure conversion
A technology for synthesizing calcium arsenate and calcium arsenate, which is applied in chemical instruments and methods, separation methods, arsenate/arsenite, etc., can solve the problems of low reagent consumption, fast reaction speed, and short time, etc. Achieve the effect of less reagent consumption, fast reaction speed and short reaction time
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Embodiment 1
[0024] The soot contains 48.34% arsenic. Add 1Kg of arsenic-containing soot into 8Kg of water, add lime that is 1.5 times the theoretical requirement of arsenic, stir and slurry for 1 hour, then put the slurried material into a closed stirring reactor, heat to 150°C, and pass in oxygen until it is airtight The oxygen partial pressure in the container was 1.0 MPa, and the reaction was stirred for 2 hours. The reacted material is cooled and filtered to obtain stable calcium arsenate solid.
Embodiment 2
[0026] The soot contains 32.84% arsenic. Add 1Kg of arsenic-containing soot into 5Kg of water, add lime that is 2.0 times the theoretical requirement of arsenic, stir and slurry for 1 hour, then put the slurried material into a closed stirring reactor, heat to 180°C, and pass in oxygen until it is airtight The oxygen partial pressure in the container was 0.6 MPa, and the reaction was stirred for 3 hours. The reacted material is cooled and filtered to obtain stable calcium arsenate solid.
Embodiment 3
[0028] The soot contains 67.42% arsenic. Add 1Kg of arsenic-containing soot into 10Kg of water, add lime that is 1.1 times the theoretical requirement of arsenic, stir and slurry for 1 hour, then put the slurried material into a closed stirring reactor, heat to 120°C, and pass in oxygen until it is airtight The oxygen partial pressure in the container was 1.5 MPa, and the reaction was stirred for 2 hours. The reacted material is cooled and filtered to obtain stable calcium arsenate solid.
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