GB873611A - A process for the manufacture of titanium dioxide - Google Patents
A process for the manufacture of titanium dioxideInfo
- Publication number
- GB873611A GB873611A GB2658356A GB2658356A GB873611A GB 873611 A GB873611 A GB 873611A GB 2658356 A GB2658356 A GB 2658356A GB 2658356 A GB2658356 A GB 2658356A GB 873611 A GB873611 A GB 873611A
- Authority
- GB
- United Kingdom
- Prior art keywords
- titanium
- solution
- chromium
- sulphuric acid
- ore
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/10—Obtaining titanium, zirconium or hafnium
- C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
- C22B34/1236—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by wet processes, e.g. by leaching
- C22B34/124—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by wet processes, e.g. by leaching using acidic solutions or liquors
- C22B34/125—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by wet processes, e.g. by leaching using acidic solutions or liquors containing a sulfur ion as active agent
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
In the production of titanium dioxide from a titanium ore containing more than 0.5% of chromium, by treatment with sulphuric acid to solubilize the titanium values and precipitating titanium dioxide by hydrolysis, the extent of the reaction between the sulphuric acid and the ore is so regulated that the quantity of chromium in the solution to be hydrolyzed is not greater than 0.5% of the weight of titanium in the solution. The quantity of titanium dissolved preferably does not exceed 23% by weight of the titanium originally present in the ore. The ores preferably employed do not contain more than 4% of chromium and contain at least 35% by weight of soluble titanium. The sulphuric acid employed may be from 73 to 93% strength and the reaction time is normally 10 to 70 minutes with a maximum reaction temperature of p 220 DEG C. According to Examples (1) an ilmenite ore containing 48% TiO2 and 0.85% Cr2O3 together with iron and minor amounts of manganese, vanadium, phosphorus and silica was ground and treated with 82% sulphuric acid at 160 DEG C. After one hour the dry mass formed was discharged into cold water to produce a solution containing 83% of the original titanium and 8.6% of the original chromium. The solution contained 0.18% of chromium based on the quantity of titanium in solution: titanium dioxide was subsequently precipitated by hydrolysis. (5) An ore as in (1) above was slurried in oleum and fed continuously to a pug mill in admixture with water to give a sulphuric acid concentration of 80%. The reaction temperature rose to 206 DEG C. and the mass was discharged after about 20 minutes at 160 DEG C. 92% of the titanium and 15.2% of the chromium originally present went into solution on leaching the reaction mass. The solution was hydrolysed to precipitate titanium dioxide.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2658356A GB873611A (en) | 1956-08-30 | 1956-08-30 | A process for the manufacture of titanium dioxide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2658356A GB873611A (en) | 1956-08-30 | 1956-08-30 | A process for the manufacture of titanium dioxide |
Publications (1)
Publication Number | Publication Date |
---|---|
GB873611A true GB873611A (en) | 1961-07-26 |
Family
ID=10245907
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2658356A Expired GB873611A (en) | 1956-08-30 | 1956-08-30 | A process for the manufacture of titanium dioxide |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB873611A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114408967A (en) * | 2021-12-28 | 2022-04-29 | 龙佰襄阳钛业有限公司 | Acidolysis process for high-impurity titanium concentrate |
-
1956
- 1956-08-30 GB GB2658356A patent/GB873611A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114408967A (en) * | 2021-12-28 | 2022-04-29 | 龙佰襄阳钛业有限公司 | Acidolysis process for high-impurity titanium concentrate |
CN114408967B (en) * | 2021-12-28 | 2023-12-12 | 龙佰襄阳钛业有限公司 | Acidolysis process of high-impurity titanium concentrate |
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