GB1290397A - - Google Patents
Info
- Publication number
- GB1290397A GB1290397A GB1290397DA GB1290397A GB 1290397 A GB1290397 A GB 1290397A GB 1290397D A GB1290397D A GB 1290397DA GB 1290397 A GB1290397 A GB 1290397A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vessel
- phosphoric acid
- dec
- phosphate
- produced
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
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)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
1290397 Phosphoric acid; calcium sulphate PRODUITS CHIMIQUES PECHINEYSAINT-GOBAIN and UNION CHIMIQUECHEMISCHE BEDRIJVEN 30 Dec 1969 [31 Dec 1968] 63342/69 Heading C1A Phosphoric acid is produced from natural phosphates and sulphuric acid by continuously feeding the phosphate and an excess of sulphuric acid into a first vessel, maintaining the mixture in the first vessel at a temperature not exceeding 80 C. to form gypsum, continuously transferring at least part of the reaction mixture to a second vessel, introducing an additional quantity of the phosphate into the second vessel to form further gypsum and separating the phosphoric acid produced from the insoluble solids.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR182720 | 1968-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1290397A true GB1290397A (en) | 1972-09-27 |
Family
ID=8659745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1290397D Expired GB1290397A (en) | 1968-12-31 | 1969-12-30 |
Country Status (15)
| Country | Link |
|---|---|
| JP (1) | JPS5242559B1 (en) |
| BE (1) | BE743756A (en) |
| BR (1) | BR6915721D0 (en) |
| CA (1) | CA928038A (en) |
| CS (1) | CS159257B2 (en) |
| DE (1) | DE1964246C3 (en) |
| ES (1) | ES374858A1 (en) |
| FR (1) | FR1600680A (en) |
| GB (1) | GB1290397A (en) |
| HU (1) | HU162299B (en) |
| IE (1) | IE33937B1 (en) |
| IL (1) | IL33637A (en) |
| NL (1) | NL158462B (en) |
| SE (1) | SE357187B (en) |
| YU (1) | YU34187B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016212242B4 (en) | 2016-07-05 | 2019-02-07 | Technische Universität Bergakademie Freiberg | Process for the production of phosphoric acid from phosphorus-containing primary and secondary raw materials |
-
1968
- 1968-12-31 FR FR182720A patent/FR1600680A/fr not_active Expired
-
1969
- 1969-12-22 SE SE17760/69A patent/SE357187B/xx unknown
- 1969-12-22 DE DE1964246A patent/DE1964246C3/en not_active Expired
- 1969-12-23 ES ES374858A patent/ES374858A1/en not_active Expired
- 1969-12-29 BE BE743756D patent/BE743756A/xx unknown
- 1969-12-29 CS CS857469A patent/CS159257B2/cs unknown
- 1969-12-29 JP JP44105353A patent/JPS5242559B1/ja active Pending
- 1969-12-29 YU YU3246/69A patent/YU34187B/en unknown
- 1969-12-30 NL NL6919561.A patent/NL158462B/en unknown
- 1969-12-30 IE IE1715/69A patent/IE33937B1/en unknown
- 1969-12-30 BR BR215721/69A patent/BR6915721D0/en unknown
- 1969-12-30 GB GB1290397D patent/GB1290397A/en not_active Expired
- 1969-12-30 IL IL33637A patent/IL33637A/en unknown
- 1969-12-31 HU HUPE720A patent/HU162299B/hu unknown
- 1969-12-31 CA CA071223A patent/CA928038A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1964246C3 (en) | 1979-06-21 |
| CA928038A (en) | 1973-06-12 |
| YU324669A (en) | 1978-05-15 |
| BE743756A (en) | 1970-06-29 |
| IL33637A0 (en) | 1970-02-19 |
| IE33937B1 (en) | 1974-12-11 |
| JPS5242559B1 (en) | 1977-10-25 |
| ES374858A1 (en) | 1972-01-16 |
| CS159257B2 (en) | 1974-12-27 |
| HU162299B (en) | 1973-01-29 |
| IL33637A (en) | 1972-11-28 |
| BR6915721D0 (en) | 1973-05-31 |
| DE1964246B2 (en) | 1978-11-02 |
| DE1964246A1 (en) | 1970-08-20 |
| IE33937L (en) | 1970-06-30 |
| NL6919561A (en) | 1970-07-02 |
| SE357187B (en) | 1973-06-18 |
| FR1600680A (en) | 1970-07-27 |
| YU34187B (en) | 1979-02-28 |
| NL158462B (en) | 1978-11-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |