GB725747A - Production of alkali metal fluotitanates - Google Patents
Production of alkali metal fluotitanatesInfo
- Publication number
- GB725747A GB725747A GB14904/53A GB1490453A GB725747A GB 725747 A GB725747 A GB 725747A GB 14904/53 A GB14904/53 A GB 14904/53A GB 1490453 A GB1490453 A GB 1490453A GB 725747 A GB725747 A GB 725747A
- Authority
- GB
- United Kingdom
- Prior art keywords
- potassium
- added
- fluoride
- titanate
- calcium
- 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
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/002—Compounds containing, besides titanium, two or more other elements, with the exception of oxygen or hydrogen
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Abstract
Sodium, potassium and ammonium fluotitanates are prepared by heating a titanium dioxide containing material with an oxidic compound of calcium, barium or strontium to at least 1200 DEG C. to form an alkaline earth metal titanate, incorporating the titanate in 20-50 per cent. sulphuric or hydrochloric acid and heating the mixture to at least 90 DEG C. in the presence of an added source of fluoride ions and alkali metal ions, separating any insoluble phase while maintaining the temperature and subsequently cooling to crystallize the desired fluotitanate. Starting materials include ilmenite, brookite, rutile, titaniferous slags or sands. Of the oxidic alkaline earth compounds, calcium sulphate is preferred, but the nitrate or carbonate may be used. If the silica content of the raw titania is in excess of 5 per cent., a 10 molar excess of the alkaline earth compound should be used. If it is desired to remove iron and silicon during the pyrolytic treatment, an added carbonaceous reducing agent should be present and treatment effected at fusion point to remove the impurities as ferrosilicon. In the acid treatment of the so formed titanate, the added fluoride and alkali metal components may be present from the start of the acid treatment, but if the silica content is high, an intermediate separation of insoluble silicon and iron compounds can be effected and the fluoride and alkali metal added subsequently. The fluoride reagents may be in the form of fluorspar, hydrofluoric acid or the fluorides of the alkali metals. The alkali metals may be introduced as sulphates, chlorides or nitrates, in addition to introduction as fluorides. According to examples (1) calcium carbonate and pigment titania are treated at 1300 DEG C. for 1 hour and the ground titanate sinter is treated with sulphuric acid at 90 DEG C. To the mixture is added fluorspar and potassium chloride and the whole digested at 90-100 DEG C., then filtered hot. On cooling and the addition of a potassium fluoride solution, potassium fluotitanate crystals are formed. (5) A mixture of ilmenite ore and precipitated calcium carbonate are heated as in (1) above and the ground sinter reacted with 50 per cent. sulphuric acid, followed by digestion at 50-75 DEG C. On dilution and a short further digestion calcium sulphate and iron hydroxide are separated by filtration. Potassium fluoride is then added and after boiling and cooling, potassium fluotitanate is crystallized. (8) Calcium titanate, prepared as in (1) above, is reacted with hydrochloric acid and fluorspar, potassium chloride, potassium sulphate and sodium sulphate are added; the function of the sodium sulphate is to hold the calcium sulphate in solution. After dilution and digestion at 95 DEG C. the solution is filtered and the potassium fluotitanate crystallized.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US725747XA | 1952-06-10 | 1952-06-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB725747A true GB725747A (en) | 1955-03-09 |
Family
ID=22108486
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14904/53A Expired GB725747A (en) | 1952-06-10 | 1953-05-28 | Production of alkali metal fluotitanates |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB725747A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102515261A (en) * | 2011-12-14 | 2012-06-27 | 湖南有色金属研究院 | Method for preparing grade-adjustable potassium fluotitanate through using high-silicon-titanium iron ore |
RU2468996C1 (en) * | 2011-10-03 | 2012-12-10 | Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Национальный исследовательский технологический университет "МИСиС" | METHOD OF OBTAINING K2TiF6 COMPOUND |
CN102897829A (en) * | 2012-10-26 | 2013-01-30 | 福建省漳平市九鼎氟化工有限公司 | Process for producing potassium fluotitanate by environment-friendly treating fluorine-contained and potassium-contained waste |
CN110697767A (en) * | 2019-11-07 | 2020-01-17 | 河钢股份有限公司承德分公司 | Method for preparing alkali metal fluorotitanate by using alkali metal titanate |
-
1953
- 1953-05-28 GB GB14904/53A patent/GB725747A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2468996C1 (en) * | 2011-10-03 | 2012-12-10 | Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Национальный исследовательский технологический университет "МИСиС" | METHOD OF OBTAINING K2TiF6 COMPOUND |
CN102515261A (en) * | 2011-12-14 | 2012-06-27 | 湖南有色金属研究院 | Method for preparing grade-adjustable potassium fluotitanate through using high-silicon-titanium iron ore |
CN102897829A (en) * | 2012-10-26 | 2013-01-30 | 福建省漳平市九鼎氟化工有限公司 | Process for producing potassium fluotitanate by environment-friendly treating fluorine-contained and potassium-contained waste |
CN102897829B (en) * | 2012-10-26 | 2014-03-05 | 福建省漳平市九鼎氟化工有限公司 | Process for producing potassium fluotitanate by environment-friendly treating fluorine-contained and potassium-contained waste |
CN110697767A (en) * | 2019-11-07 | 2020-01-17 | 河钢股份有限公司承德分公司 | Method for preparing alkali metal fluorotitanate by using alkali metal titanate |
CN110697767B (en) * | 2019-11-07 | 2022-08-05 | 河钢股份有限公司承德分公司 | Method for preparing alkali metal fluorotitanate by using alkali metal titanate |
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