RO69299A - Procedeu de obtinere a fosfoghipsului cu continut redus de fluor - Google Patents
Procedeu de obtinere a fosfoghipsului cu continut redus de fluorInfo
- Publication number
- RO69299A RO69299A RO7584077A RO8407775A RO69299A RO 69299 A RO69299 A RO 69299A RO 7584077 A RO7584077 A RO 7584077A RO 8407775 A RO8407775 A RO 8407775A RO 69299 A RO69299 A RO 69299A
- Authority
- RO
- Romania
- Prior art keywords
- phosphogypse
- obtaining
- fluorine content
- reduced fluorine
- reduced
- Prior art date
Links
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 title 1
- 229910052731 fluorine Inorganic materials 0.000 title 1
- 239000011737 fluorine Substances 0.000 title 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
- C01B25/222—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen
- C01B25/223—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen only one form of calcium sulfate being formed
- C01B25/225—Dihydrate process
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Fertilizers (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Processing Of Solid Wastes (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT989274A AT346223B (de) | 1974-12-11 | 1974-12-11 | Verfahren zur gewinnung von fluorarmem gips als abfallprodukt aus dem nassphosphorsaeureverfahren |
Publications (1)
Publication Number | Publication Date |
---|---|
RO69299A true RO69299A (ro) | 1980-06-15 |
Family
ID=3618235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RO7584077A RO69299A (ro) | 1974-12-11 | 1975-12-02 | Procedeu de obtinere a fosfoghipsului cu continut redus de fluor |
Country Status (14)
Country | Link |
---|---|
US (1) | US4026990A (ro) |
JP (1) | JPS5183897A (ro) |
AT (1) | AT346223B (ro) |
BE (1) | BE836510A (ro) |
BR (1) | BR7508195A (ro) |
DD (1) | DD122059A1 (ro) |
DE (1) | DE2549625A1 (ro) |
FR (1) | FR2294132A1 (ro) |
IL (1) | IL48616A0 (ro) |
IN (1) | IN145328B (ro) |
NL (1) | NL7514463A (ro) |
RO (1) | RO69299A (ro) |
SU (1) | SU577960A3 (ro) |
ZA (1) | ZA757656B (ro) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1983002266A1 (en) * | 1981-12-21 | 1983-07-07 | United States Gypsum Co | Conversion of fluoroanhydrite to plaster |
US5236679A (en) * | 1992-05-06 | 1993-08-17 | Freeport-Mcmoran Resource Partners | Removal of aluminum contamination during production of phosphoric acid |
WO1999041065A1 (en) | 1996-03-06 | 1999-08-19 | Compositech, Llc. | Thermoplastic articles made from recycled products and process for making |
CN101506120B (zh) * | 2006-08-25 | 2012-09-05 | Acc有限公司 | 一种惰化磷石膏中杂质的方法 |
CN102093072B (zh) * | 2010-12-08 | 2013-01-09 | 济南大学 | 一种氟石膏发泡材料及其制备方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1858203A (en) * | 1931-01-13 | 1932-05-10 | Rumford Chemical Works | Purification of phosphoric acid |
US1969449A (en) * | 1931-10-17 | 1934-08-07 | Rumford Chemical Works | Process of producing by-product calcium sulphate |
US2123785A (en) * | 1936-03-02 | 1938-07-12 | Victor Chemical Works | Removal of fluorine from phosphoric acid |
US3151941A (en) * | 1960-05-02 | 1964-10-06 | Smith Douglass Company Inc | Defluorination of peosphoric acid |
US3193351A (en) * | 1961-07-05 | 1965-07-06 | Nat Distillers Chem Corp | Removal of fluorine from wet process prosphoric acid |
BE621425A (ro) * | 1962-06-23 | |||
US3323864A (en) * | 1963-08-29 | 1967-06-06 | Fmc Corp | Production of phosphoric acid from a phosphatic ore |
GB1248037A (en) * | 1968-01-13 | 1971-09-29 | Fisons Ltd | Calcium sulphate |
US3743725A (en) * | 1971-11-04 | 1973-07-03 | Atlantic Richfield Co | Process for the recovery in useful form of fluorine values from phosphate rock while producing phosphoric acid |
US3764658A (en) * | 1972-01-26 | 1973-10-09 | United States Steel Corp | Production of fluosilicic acid |
-
1974
- 1974-12-11 AT AT989274A patent/AT346223B/de not_active IP Right Cessation
-
1975
- 1975-11-05 DE DE19752549625 patent/DE2549625A1/de active Pending
- 1975-12-02 RO RO7584077A patent/RO69299A/ro unknown
- 1975-12-04 IN IN2306/CAL/75A patent/IN145328B/en unknown
- 1975-12-05 ZA ZA757656A patent/ZA757656B/xx unknown
- 1975-12-05 FR FR7537273A patent/FR2294132A1/fr active Granted
- 1975-12-08 IL IL48616A patent/IL48616A0/xx unknown
- 1975-12-09 SU SU7502196095A patent/SU577960A3/ru active
- 1975-12-10 BE BE162640A patent/BE836510A/xx unknown
- 1975-12-10 DD DD190027A patent/DD122059A1/xx unknown
- 1975-12-10 BR BR7508195*A patent/BR7508195A/pt unknown
- 1975-12-11 US US05/639,928 patent/US4026990A/en not_active Expired - Lifetime
- 1975-12-11 JP JP50146947A patent/JPS5183897A/ja active Pending
- 1975-12-11 NL NL7514463A patent/NL7514463A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
IL48616A0 (en) | 1976-02-29 |
DE2549625A1 (de) | 1976-06-16 |
AT346223B (de) | 1978-10-25 |
BR7508195A (pt) | 1976-08-24 |
IN145328B (ro) | 1978-09-23 |
DD122059A1 (ro) | 1976-09-12 |
NL7514463A (nl) | 1976-06-15 |
US4026990A (en) | 1977-05-31 |
ZA757656B (en) | 1976-11-24 |
BE836510A (fr) | 1976-06-10 |
FR2294132A1 (fr) | 1976-07-09 |
JPS5183897A (ro) | 1976-07-22 |
SU577960A3 (ru) | 1977-10-25 |
ATA989274A (de) | 1978-02-15 |
FR2294132B1 (ro) | 1978-05-12 |
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