SU420556A1 - - Google Patents

Info

Publication number

SU420556A1

SU420556A1 SU1493336A SU1493336A SU420556A1 SU 420556 A1 SU420556 A1 SU 420556A1 SU 1493336 A SU1493336 A SU 1493336A SU 1493336 A SU1493336 A SU 1493336A SU 420556 A1 SU420556 A1 SU 420556A1

Authority

SU

USSR - Soviet Union

Prior art keywords

phosphoric acid

calcium sulfate

sulfate hemihydrate

hemihydrate

calcium

Prior art date

1970-11-12

Links

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• NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 48
• 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 24
• 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 21
• 238000000034 method Methods 0.000 claims description 13
• 238000000354 decomposition reaction Methods 0.000 claims description 9
• 229910019142 PO4 Inorganic materials 0.000 claims description 8
• QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
• 238000001914 filtration Methods 0.000 claims description 8
• 235000021317 phosphate Nutrition 0.000 claims description 8
• OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 7
• 235000011132 calcium sulphate Nutrition 0.000 claims description 6
• 239000000725 suspension Substances 0.000 claims description 5
• 239000010452 phosphate Substances 0.000 claims description 4
• 150000003013 phosphoric acid derivatives Chemical group 0.000 claims description 4
• 238000005406 washing Methods 0.000 claims description 4
• 230000006641 stabilisation Effects 0.000 claims description 3
• 238000011105 stabilization Methods 0.000 claims description 3
• NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
• 239000002002 slurry Substances 0.000 claims description 2
• XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
• PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 6
• 239000013078 crystal Substances 0.000 description 3
• 238000004519 manufacturing process Methods 0.000 description 3
• 239000010802 sludge Substances 0.000 description 3
• QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical class [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
• OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
• DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical class C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
• 239000011575 calcium Substances 0.000 description 2
• 229910052791 calcium Inorganic materials 0.000 description 2
• 150000002823 nitrates Chemical class 0.000 description 2
• 238000005191 phase separation Methods 0.000 description 2
• 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 2
• YXJYBPXSEKMEEJ-UHFFFAOYSA-N phosphoric acid;sulfuric acid Chemical compound OP(O)(O)=O.OS(O)(=O)=O YXJYBPXSEKMEEJ-UHFFFAOYSA-N 0.000 description 2
• 239000011734 sodium Chemical class 0.000 description 2
• 229910052708 sodium Inorganic materials 0.000 description 2
• 235000002639 sodium chloride Nutrition 0.000 description 2
• PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
• ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical class [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
• WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical class [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 1
• QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
• 239000002253 acid Substances 0.000 description 1
• 235000019270 ammonium chloride Nutrition 0.000 description 1
• 239000003153 chemical reaction reagent Substances 0.000 description 1
• 150000003841 chloride salts Chemical class 0.000 description 1
• 238000004140 cleaning Methods 0.000 description 1
• 238000002425 crystallisation Methods 0.000 description 1
• 230000008025 crystallization Effects 0.000 description 1
• 150000004683 dihydrates Chemical class 0.000 description 1
• 239000004744 fabric Substances 0.000 description 1
• 239000003337 fertilizer Substances 0.000 description 1
• 239000000706 filtrate Substances 0.000 description 1
• 239000011737 fluorine Substances 0.000 description 1
• 229910052731 fluorine Inorganic materials 0.000 description 1
• 239000010440 gypsum Substances 0.000 description 1
• 229910052602 gypsum Inorganic materials 0.000 description 1
• 229910052500 inorganic mineral Inorganic materials 0.000 description 1
• 239000011707 mineral Substances 0.000 description 1
• 235000010755 mineral Nutrition 0.000 description 1
• 238000002156 mixing Methods 0.000 description 1
• 239000011591 potassium Chemical class 0.000 description 1
• 229910052700 potassium Inorganic materials 0.000 description 1
• 235000011164 potassium chloride Nutrition 0.000 description 1
• 238000001953 recrystallisation Methods 0.000 description 1
• 150000003839 salts Chemical class 0.000 description 1
• 239000000126 substance Substances 0.000 description 1
• 239000002351 wastewater Substances 0.000 description 1