BE355279A - - Google Patents

Info

Publication number

BE355279A

BE355279A BE355279DA BE355279A BE 355279 A BE355279 A BE 355279A BE 355279D A BE355279D A BE 355279DA BE 355279 A BE355279 A BE 355279A

Authority

BE

Belgium

Prior art keywords

gypsum

solution

recrystallization

separated

calcium

Prior art date

Links

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• OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 12
• 229910052602 gypsum Inorganic materials 0.000 claims description 12
• 239000010440 gypsum Substances 0.000 claims description 12
• ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 10
• 239000013078 crystal Substances 0.000 claims description 7
• 235000011132 calcium sulphate Nutrition 0.000 claims description 6
• 238000001953 recrystallisation Methods 0.000 claims description 5
• PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 3
• 239000001175 calcium sulphate Substances 0.000 claims description 3
• 239000000203 mixture Substances 0.000 claims description 3
• ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 claims description 2
• 238000000034 method Methods 0.000 claims 5
• 238000002425 crystallisation Methods 0.000 claims 1
• 230000008025 crystallization Effects 0.000 claims 1
• VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
• QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
• 229910000019 calcium carbonate Inorganic materials 0.000 description 4
• BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 3
• 229910052921 ammonium sulfate Inorganic materials 0.000 description 3
• 235000011130 ammonium sulphate Nutrition 0.000 description 3
• GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
• 229910021529 ammonia Inorganic materials 0.000 description 2
• BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
• 229910017604 nitric acid Inorganic materials 0.000 description 2
• 238000002474 experimental method Methods 0.000 description 1
• 239000012065 filter cake Substances 0.000 description 1
• 239000012634 fragment Substances 0.000 description 1
• 238000010438 heat treatment Methods 0.000 description 1
• 239000010802 sludge Substances 0.000 description 1
• XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1