NO116160B - - Google Patents
Info
- Publication number
- NO116160B NO116160B NO164589A NO16458966A NO116160B NO 116160 B NO116160 B NO 116160B NO 164589 A NO164589 A NO 164589A NO 16458966 A NO16458966 A NO 16458966A NO 116160 B NO116160 B NO 116160B
- Authority
- NO
- Norway
- Prior art keywords
- phosphoric acid
- crystals
- hemihydrate
- gypsum
- recrystallization
- Prior art date
Links
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 177
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 154
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 89
- 239000013078 crystal Substances 0.000 claims description 80
- 239000000243 solution Substances 0.000 claims description 69
- 239000010440 gypsum Substances 0.000 claims description 65
- 229910052602 gypsum Inorganic materials 0.000 claims description 65
- 238000005406 washing Methods 0.000 claims description 61
- 238000001953 recrystallisation Methods 0.000 claims description 59
- 239000007788 liquid Substances 0.000 claims description 49
- 238000000034 method Methods 0.000 claims description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 44
- 239000000203 mixture Substances 0.000 claims description 30
- 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 27
- 238000010306 acid treatment Methods 0.000 claims description 23
- 239000002367 phosphate rock Substances 0.000 claims description 21
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 239000012452 mother liquor Substances 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims description 8
- 235000011132 calcium sulphate Nutrition 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000001175 calcium sulphate Substances 0.000 claims description 5
- 238000010924 continuous production Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 3
- 229910003556 H2 SO4 Inorganic materials 0.000 claims 1
- 239000000470 constituent Substances 0.000 claims 1
- 230000008020 evaporation Effects 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 27
- 229910019142 PO4 Inorganic materials 0.000 description 21
- 239000010452 phosphate Substances 0.000 description 21
- 239000012065 filter cake Substances 0.000 description 14
- 239000000706 filtrate Substances 0.000 description 11
- 238000001914 filtration Methods 0.000 description 11
- 239000012071 phase Substances 0.000 description 9
- 239000011505 plaster Substances 0.000 description 9
- 239000002253 acid Substances 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 7
- 235000011149 sulphuric acid Nutrition 0.000 description 7
- 229910000372 mercury(II) sulfate Inorganic materials 0.000 description 6
- 229940085991 phosphate ion Drugs 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 230000020477 pH reduction Effects 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- 150000004683 dihydrates Chemical group 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 238000011109 contamination Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000011541 reaction mixture Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 229910052925 anhydrite Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000001506 calcium phosphate Substances 0.000 description 2
- 229910000389 calcium phosphate Inorganic materials 0.000 description 2
- 235000011010 calcium phosphates Nutrition 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical group [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011437 continuous method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002198 insoluble material Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000019635 sulfation Effects 0.000 description 1
- 238000005670 sulfation reaction Methods 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/18—Phosphoric acid
- C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB38480/65A GB1162514A (en) | 1965-09-08 | 1965-09-08 | Process for the preparation of Phosphoric Acid and Gypsum from Phosphate Rock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO116160B true NO116160B (da) | 1969-02-10 |
Family
ID=10403731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO164589A NO116160B (da) | 1965-09-08 | 1966-09-07 |
Country Status (13)
| Country | Link |
|---|---|
| AT (1) | AT285526B (da) |
| BE (1) | BE686573A (da) |
| DE (1) | DE1542611C3 (da) |
| DK (1) | DK138941B (da) |
| ES (1) | ES330957A1 (da) |
| FI (1) | FI44589B (da) |
| GB (1) | GB1162514A (da) |
| IL (1) | IL26394A (da) |
| NL (1) | NL153151B (da) |
| NO (1) | NO116160B (da) |
| OA (1) | OA02139A (da) |
| SE (1) | SE315575C (da) |
| SU (1) | SU389657A3 (da) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3653826A (en) * | 1967-09-21 | 1972-04-04 | Nissan Chemical Ind Ltd | Process for the production of phosphoric acid at a high concentration and a gypsum by-product of improved quality |
| ATE313514T1 (de) * | 2001-08-24 | 2006-01-15 | Purac Biochem Bv | Verfahren zur herstellung von milchsäure und calciumsulfatdihydrat |
| US6632966B2 (en) | 2001-08-24 | 2003-10-14 | Purac Biochem B.V. | Method for the preparation of lactic acid and calcium sulphate dihydrate |
| RU2599525C1 (ru) * | 2015-04-23 | 2016-10-10 | Открытое акционерное общество "Научно-исследовательский институт по удобрениям и инсектофунгицидам имени профессора Я.В. Самойлова" (ОАО "НИУИФ") | Способ получения экстракционной фосфорной кислоты |
| CN111732086A (zh) * | 2020-07-31 | 2020-10-02 | 天宝动物营养科技股份有限公司 | 一种半水-二水法制备磷酸联产高纯石膏工艺 |
| CN116768171B (zh) * | 2023-06-28 | 2024-07-02 | 昆明川金诺化工股份有限公司 | 一种生产优质半水湿法磷酸的工艺 |
-
1965
- 1965-09-08 GB GB38480/65A patent/GB1162514A/en not_active Expired
-
1966
- 1966-08-28 IL IL26394A patent/IL26394A/en unknown
- 1966-08-29 NL NL666612150A patent/NL153151B/xx not_active IP Right Cessation
- 1966-09-02 FI FI2298/66A patent/FI44589B/fi active
- 1966-09-05 DE DE1542611A patent/DE1542611C3/de not_active Expired
- 1966-09-07 AT AT844766A patent/AT285526B/de not_active IP Right Cessation
- 1966-09-07 ES ES0330957A patent/ES330957A1/es not_active Expired
- 1966-09-07 SU SU1101994A patent/SU389657A3/ru active
- 1966-09-07 DK DK460166AA patent/DK138941B/da unknown
- 1966-09-07 BE BE686573D patent/BE686573A/xx not_active IP Right Cessation
- 1966-09-07 NO NO164589A patent/NO116160B/no unknown
- 1966-09-08 SE SE6612066A patent/SE315575C/xx unknown
- 1966-09-12 OA OA52594A patent/OA02139A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AT285526B (de) | 1970-10-27 |
| OA02139A (fr) | 1970-05-05 |
| DE1542611A1 (de) | 1970-04-09 |
| IL26394A (en) | 1970-02-19 |
| GB1162514A (en) | 1969-08-27 |
| DE1542611C3 (de) | 1978-05-11 |
| NL153151B (nl) | 1977-05-16 |
| BE686573A (da) | 1967-03-07 |
| SE315575C (da) | 1975-10-20 |
| SU389657A3 (da) | 1973-07-05 |
| DK138941B (da) | 1978-11-20 |
| ES330957A1 (es) | 1967-09-16 |
| FI44589B (da) | 1971-08-31 |
| SE315575B (da) | 1969-10-06 |
| NL6612150A (da) | 1967-03-09 |
| DK138941C (da) | 1979-05-07 |
| DE1542611B2 (de) | 1974-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3216481A (en) | Recovery of phthalic and maleic acid from solutions | |
| EP3500524B1 (en) | Process for reducing fouling in evaporators in lithium hydroxide recovery | |
| FI83209C (fi) | Kontinuerligt foerfarande foer framstaellning av fosforsyra och kalciumsulfat. | |
| NO163756B (no) | Pulsradar. | |
| US3632307A (en) | Process for the preparation of phosphoric acid and gypsum from phosphate rock | |
| NO121719B (da) | ||
| US2567227A (en) | Production of calcium phosphate | |
| NO116160B (da) | ||
| KR20120112459A (ko) | 인산의 제조방법 | |
| JPH0454615B2 (da) | ||
| US2535117A (en) | Process for recovery of glutamic acid and other values from steffen waste water | |
| US2897053A (en) | Wet process for phosphoric acid manufacture | |
| EA025514B1 (ru) | Способ получения фосфорной кислоты дигидратного/полугидратного типа | |
| NO154793B (no) | Fremgangsmaate til fjerning av urenheter fra natriumaluminatopploesninger. | |
| CN110040761A (zh) | 一种用酸性蚀刻废液生产硫酸铜的方法 | |
| US3472619A (en) | Production of phosphoric acid and calcium sulfate | |
| NO164589B (no) | Aapningsanordning for emballasjebeholder. | |
| US3580703A (en) | Process for the purification of residual gypsum formed in the manufacture of phosphoric acid by the action of sulphuric acid on natural phosphates | |
| US4524057A (en) | Production of concentrated phosphoric acid and hemihydrated calcium sulfate | |
| CN85100373B (zh) | 矿盐溶卤联产精盐和硫酸钠 | |
| US2758912A (en) | Process for producing a substantially sulfate-free and potassium-free magnesium chloride solution | |
| US2640851A (en) | Recovery of calcium magnesium aconitate from molasses | |
| US1558554A (en) | Process of separating sugar from residual molasses | |
| US3515534A (en) | Recycling ammonium sulfate in nitric phosphate processing | |
| TWI632258B (zh) | 用於起始硫酸銨結晶程序的方法 |