GB904882A - Method of making fluorite - Google Patents
Method of making fluoriteInfo
- Publication number
- GB904882A GB904882A GB3825459A GB3825459A GB904882A GB 904882 A GB904882 A GB 904882A GB 3825459 A GB3825459 A GB 3825459A GB 3825459 A GB3825459 A GB 3825459A GB 904882 A GB904882 A GB 904882A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fluorite
- h2so4
- impure
- impurities
- purified
- 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
- 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
- C01F11/20—Halides
- C01F11/22—Fluorides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Fluorite is purified by reacting the impure fluorite with hydrogen fluoride in an amount sufficient to convert a preselected amount of impurities into flourides. The fluorite may be mixed with aqueous HF at 80 DEG - 150 DEG C. so that the fluorite is wetted, but not kneaded. The HF may be sufficient to convert silica to SiF4, which is evolved with carbon dioxide, and other impurities to fluorides insoluble in HF. The aqueous HF may be the "acid drips" or impure initial condensate at 20 DEG - 40 DEG C. from an HF plant, containing H2O, H2SO4, HF, H2SiF6, and fluosulphonic acids. Alternatively, the fluorite may be treated in gaseous suspension at 150 DEG - 500 DEG C. by passing gaseous HF through a fluidized bed of fluorite. The purified fluorite may be reacted with H2SO4 to form pure HF.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT599079 | 1958-11-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB904882A true GB904882A (en) | 1962-09-05 |
Family
ID=11120833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3825459A Expired GB904882A (en) | 1958-11-18 | 1959-11-11 | Method of making fluorite |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB904882A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4093706A (en) * | 1975-11-13 | 1978-06-06 | Politechnika Slaska | Method of production of synthetic fluorite having a selected grain size |
| CN101913641A (en) * | 2010-08-31 | 2010-12-15 | 湖南有色氟化学科技发展有限公司 | Technology for purifying low-grade fluorite |
-
1959
- 1959-11-11 GB GB3825459A patent/GB904882A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4093706A (en) * | 1975-11-13 | 1978-06-06 | Politechnika Slaska | Method of production of synthetic fluorite having a selected grain size |
| CN101913641A (en) * | 2010-08-31 | 2010-12-15 | 湖南有色氟化学科技发展有限公司 | Technology for purifying low-grade fluorite |
| CN101913641B (en) * | 2010-08-31 | 2014-07-09 | 湖南有色氟化学科技发展有限公司 | Technology for purifying low-grade fluorite |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2780522A (en) | Production of fluorine compounds | |
| GB811118A (en) | Improvements in or relating to manufacture of ammonium fluorides | |
| ES423320A1 (en) | Production of metal fluorides from fluosilicic acid | |
| EP0129112A3 (en) | Continuous production of silicon tetrafluoride gas in a vertical column | |
| GB963089A (en) | Process for the production of fluorine compounds from fluosilicic acid | |
| ES303011A1 (en) | Process for obtaining sulfuric acid | |
| GB904882A (en) | Method of making fluorite | |
| GB1095859A (en) | Purification and/or concentration of fluosilicic acid | |
| US2833628A (en) | Manufacture of silicon tetrafluoride | |
| GB903682A (en) | An improved method for the manufacture of chlorine by the oxidation of hydrochloric acid | |
| US3397123A (en) | Purifying aqueous acid phosphate solutions containing fluorine impurities | |
| BE594047A (en) | Process for the electrolytic recovery of chlorine from hydrochloric gas or hydrochloric acid in solution. | |
| GB902076A (en) | Improvements relating to the production of silicon tetrachloride | |
| GB994166A (en) | Method of producing nitrosyl chloride | |
| DE3362720D1 (en) | Process for the purification of sulfuric acid as a by-product of the synthesis of boron trifluoride | |
| US2865711A (en) | Process for the production of hydrogen fluoride | |
| US4178353A (en) | Preparation and purification of phosphoryl chloride | |
| GB999137A (en) | Process for the production of hydrofluoric acid | |
| US2899270A (en) | Production of thorium fluoride | |
| GB910207A (en) | Preparation of potassium hydrogen fluoride | |
| ES8603788A1 (en) | Process for preparing hydrogen fluoride by reacting sulphuric acid with fluor spar in a rotating furnace. | |
| GB1393236A (en) | Process for the preparation of concentrated tetrafluoroboric acid | |
| SU475836A1 (en) | Method of preparing hydrogen fluoride | |
| GB803756A (en) | Process for the preparation of silicon tetrafluoride | |
| GB985769A (en) | Improvements in or relating to the separation of hydrogen fluoride and hydrogen chloride mixtures |