ZA903563B - Production of acid soluble titania - Google Patents
Production of acid soluble titaniaInfo
- Publication number
- ZA903563B ZA903563B ZA903563A ZA903563A ZA903563B ZA 903563 B ZA903563 B ZA 903563B ZA 903563 A ZA903563 A ZA 903563A ZA 903563 A ZA903563 A ZA 903563A ZA 903563 B ZA903563 B ZA 903563B
- Authority
- ZA
- South Africa
- Prior art keywords
- mineral
- iron
- magnesium
- manganese
- percentage
- Prior art date
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
Landscapes
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Compounds Of Iron (AREA)
- Glass Compositions (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
The specification discloses a method of making acid digestible titania. The method comprises the steps of: (1) adding a magnesium or manganese compound to a titaniferous mineral if the content of manganese and magnesium in the mineral is insufficient; (2) heating the mineral in the presence of a reductant for a sufficient length of time and at a sufficiently high temperature to permit the reduction of iron containing compounds to metallic iron and enable titania present to convert to an acid digestible form; (3) cooling the mineral; and (4) separating iron from the mineral by means of an aqueous aeration step. The titaniferous mineral contains insufficient magnesium and manganese if the following expression is not satisfied: 1.98a + 1.14b/d >/= 0.08 where a represents the percentage by weight of MgO contained in the mineral, (b) represents the percentage by weight fo MnO contained in the mineral; and (d) represents the percentage by weight of TiO2 contained in the mineral. The magnesium or manganese compound is either an oxide or a compound that is capable of converting to an oxide under reaction conditions. An aqueous aeration technique described in the specification involves the use of a sequesterant that is capable of sequestering iron from the mineral without significantly lowering the local pH while at the same time permitting the formation of an oxide of iron at a point away from the mineral. An example of such a sequesterant is citric acid.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPJ412289 | 1989-05-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA903563B true ZA903563B (en) | 1991-02-27 |
Family
ID=3773906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA903563A ZA903563B (en) | 1989-05-11 | 1990-05-10 | Production of acid soluble titania |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0475953B1 (en) |
| AT (1) | ATE110698T1 (en) |
| AU (1) | AU626682B2 (en) |
| BR (1) | BR9007364A (en) |
| CA (1) | CA2055428C (en) |
| DE (1) | DE69012117T2 (en) |
| DK (1) | DK0475953T3 (en) |
| ES (1) | ES2061032T3 (en) |
| WO (1) | WO1990013614A1 (en) |
| ZA (1) | ZA903563B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI104965B (en) * | 1997-04-03 | 2000-05-15 | Kemira Pigments Oy | Process for the preparation of titanium dioxide |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU416432B1 (en) * | 1966-04-29 | 1971-08-20 | WESTERN TITANIUN M. L. and COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANIZATION | Production of anosovite from titaniferous minerals |
-
1990
- 1990-05-10 AU AU56448/90A patent/AU626682B2/en not_active Ceased
- 1990-05-10 ES ES90906758T patent/ES2061032T3/en not_active Expired - Lifetime
- 1990-05-10 BR BR909007364A patent/BR9007364A/en not_active IP Right Cessation
- 1990-05-10 CA CA002055428A patent/CA2055428C/en not_active Expired - Fee Related
- 1990-05-10 EP EP90906758A patent/EP0475953B1/en not_active Expired - Lifetime
- 1990-05-10 WO PCT/AU1990/000190 patent/WO1990013614A1/en active IP Right Grant
- 1990-05-10 DK DK90906758.9T patent/DK0475953T3/en active
- 1990-05-10 AT AT90906758T patent/ATE110698T1/en not_active IP Right Cessation
- 1990-05-10 ZA ZA903563A patent/ZA903563B/en unknown
- 1990-05-10 DE DE69012117T patent/DE69012117T2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| BR9007364A (en) | 1992-05-12 |
| DK0475953T3 (en) | 1995-01-09 |
| AU626682B2 (en) | 1992-08-06 |
| AU5644890A (en) | 1990-11-29 |
| EP0475953A1 (en) | 1992-03-25 |
| WO1990013614A1 (en) | 1990-11-15 |
| EP0475953B1 (en) | 1994-08-31 |
| ATE110698T1 (en) | 1994-09-15 |
| CA2055428C (en) | 2001-01-23 |
| CA2055428A1 (en) | 1990-11-12 |
| EP0475953A4 (en) | 1992-12-02 |
| DE69012117D1 (en) | 1994-10-06 |
| ES2061032T3 (en) | 1994-12-01 |
| DE69012117T2 (en) | 1995-05-18 |
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