AT286930B - Verfahren zur Herstellung von Kieselsäurefüllstoff und Calciumfluorid - Google Patents
Verfahren zur Herstellung von Kieselsäurefüllstoff und CalciumfluoridInfo
- Publication number
- AT286930B AT286930B AT691468A AT691468A AT286930B AT 286930 B AT286930 B AT 286930B AT 691468 A AT691468 A AT 691468A AT 691468 A AT691468 A AT 691468A AT 286930 B AT286930 B AT 286930B
- Authority
- AT
- Austria
- Prior art keywords
- production
- calcium fluoride
- silica filler
- filler
- silica
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
- C01B33/187—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates
- C01B33/193—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates of aqueous solutions of silicates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
- C01B33/186—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof from or via fluosilicic acid or salts thereof by a wet 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
- C01F11/20—Halides
- C01F11/22—Fluorides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Silicon Compounds (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF0053223 | 1967-08-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT286930B true AT286930B (de) | 1970-12-28 |
Family
ID=7106108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT691468A AT286930B (de) | 1967-08-12 | 1968-07-18 | Verfahren zur Herstellung von Kieselsäurefüllstoff und Calciumfluorid |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3549317A (de) |
| AT (1) | AT286930B (de) |
| DE (1) | DE1667500A1 (de) |
| FR (1) | FR1580578A (de) |
| GB (1) | GB1239078A (de) |
| NL (1) | NL6811308A (de) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2307897C3 (de) * | 1973-02-17 | 1982-02-18 | Bayer Ag, 5090 Leverkusen | Verfahren zur Herstellung von synthetischem Flußspat |
| US4078043A (en) * | 1974-02-15 | 1978-03-07 | Kali-Chemie Aktiengesellschaft | Process for preparing calcium fluoride from hexafluoro silicic acid and production of silicic acid gel or active silicic acid from said calcium fluoride |
| US4213952A (en) * | 1978-10-23 | 1980-07-22 | Occidental Research Corporation | Recovery of hydrofluoric acid from fluosilicic acid with high pH hydrolysis |
| US4213951A (en) * | 1978-10-23 | 1980-07-22 | Occidental Research Corporation | Recovery of hydrofluoric acid from fluosilicic acid with high pH hydrolysis |
| US4298586A (en) * | 1978-10-23 | 1981-11-03 | Occidental Research Corp. | Recovery of hydrofluoric acid from fluosilicic acid |
| US4308244A (en) * | 1980-03-28 | 1981-12-29 | Occidental Research Corp. | Process for producing fluorine compounds and amorphous silica |
| AT375627B (de) * | 1980-04-30 | 1984-08-27 | Voest Alpine Ag | Verfahren zur aufarbeitung von beim nassaufschluss von phosphaten anfallender kieselfluorwasserstoffsaeure sowie einrichtung zur durchfuehrung des verfahrens |
| US4915705A (en) * | 1986-08-01 | 1990-04-10 | Freeport Research And Engineering Co. | Production of silica and fluorine-containing coproducts from fluosilicic acid |
| US5910297A (en) * | 1997-07-31 | 1999-06-08 | E. I. Du Pont De Nemours And Company | Alkaline earth fluoride manufacturing process |
| WO2014186740A2 (en) * | 2013-05-16 | 2014-11-20 | Kane Thomas E | Silica protected pigments for use in artist media |
| WO2021079368A1 (en) | 2019-10-24 | 2021-04-29 | IMI Tami Institute for Research and Development ltd | Novel flux / mineralizer for cement clinkering and method of manufacture thereof |
| CN115192465A (zh) * | 2021-04-08 | 2022-10-18 | 北京化工大学 | CaF2@SiO2纳米颗粒或团簇体的制备方法 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1382165A (en) * | 1919-08-30 | 1921-06-21 | Howard B Bishop | Process of making fluorids |
| US1634122A (en) * | 1921-10-08 | 1927-06-28 | Little Inc A | Method of producing sodium fluoride |
| US2561304A (en) * | 1947-10-30 | 1951-07-17 | Philadelphia Quartz Co | Process for the production of finely divided amorphous silica |
| US2588853A (en) * | 1948-07-02 | 1952-03-11 | Interchem Corp | Method of producing silica powder |
| US2601235A (en) * | 1949-06-15 | 1952-06-24 | Du Pont | Process for producing built-up silica particles |
| US2780521A (en) * | 1954-03-22 | 1957-02-05 | Int Minerals & Chem Corp | Process for producing colloidal silicafree calcium fluoride |
| US2780523A (en) * | 1954-03-22 | 1957-02-05 | Int Minerals & Chem Corp | Process for recovering solid calcium fluoride containing product and colloidal silica solution from a weak aqueous fluosilicic acid solution |
| US2881049A (en) * | 1954-09-28 | 1959-04-07 | Hoechst Ag | Process of preparing alkali metal silicates |
| NL6502791A (de) * | 1965-03-05 | 1966-09-06 |
-
1967
- 1967-08-12 DE DE19671667500 patent/DE1667500A1/de active Pending
-
1968
- 1968-07-17 GB GB1239078D patent/GB1239078A/en not_active Expired
- 1968-07-17 US US745621A patent/US3549317A/en not_active Expired - Lifetime
- 1968-07-18 AT AT691468A patent/AT286930B/de not_active IP Right Cessation
- 1968-08-08 NL NL6811308A patent/NL6811308A/xx unknown
- 1968-08-19 FR FR1580578D patent/FR1580578A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1239078A (de) | 1971-07-14 |
| FR1580578A (de) | 1969-09-05 |
| DE1667500A1 (de) | 1971-06-16 |
| US3549317A (en) | 1970-12-22 |
| NL6811308A (de) | 1969-02-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ELJ | Ceased due to non-payment of the annual fee |