GB1445652A - Sulphuric acid process for preparing titanium dioxide - Google Patents
Sulphuric acid process for preparing titanium dioxideInfo
- Publication number
- GB1445652A GB1445652A GB2039874A GB2039874A GB1445652A GB 1445652 A GB1445652 A GB 1445652A GB 2039874 A GB2039874 A GB 2039874A GB 2039874 A GB2039874 A GB 2039874A GB 1445652 A GB1445652 A GB 1445652A
- Authority
- GB
- United Kingdom
- Prior art keywords
- titanium dioxide
- sulphuric acid
- reduction
- tio
- acid process
- 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
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Catalysts (AREA)
- Removal Of Specific Substances (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
1445652 Sulphate process TiO 2 AMERICAN CYANAMID CO 8 May 1974 [25 May 1973] 20398/74 Headings C1A and C1N In a process for the production of a titanium dioxide pigment by the leaching of a titaniferrous ore with H 2 SO 4 , the ferric iron in the liquor is catalytically reduced with SO 2 or a soluble sulphite or bisulphite and the sulphuric acid generated by the reduction is neutralized with the compound selected from MgO, MgCO 3 , MgSO 3 , NH 3 , NH 4 OH, NH 4 HSO 3 (NH 4 ) 2 CO 3 to reduce H 2 SO 4 -TiO 2 weight ratio in the leach liquor to 1À75-2À20 prior to hydrolysis to precipitate Ti(OH) 2 . The reduction may be performed before, after or during addition of the neutralizing agent. Suitable catalysts are activated carbon, charcoal or thiocyanate ions. Ferrous sulphate formed may be crystallized out.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US36422073A | 1973-05-25 | 1973-05-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1445652A true GB1445652A (en) | 1976-08-11 |
Family
ID=23433567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2039874A Expired GB1445652A (en) | 1973-05-25 | 1974-05-08 | Sulphuric acid process for preparing titanium dioxide |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5020567A (en) |
| DE (1) | DE2425202A1 (en) |
| FR (1) | FR2230595B1 (en) |
| GB (1) | GB1445652A (en) |
| NL (1) | NL7406829A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113926469A (en) * | 2021-08-23 | 2022-01-14 | 浙江纳风净化技术有限公司 | Preparation method of photocatalyst activated carbon |
| CN115072812A (en) * | 2021-03-16 | 2022-09-20 | 宝山钢铁股份有限公司 | Silicon steel magnesium oxide wastewater recycling treatment method and treatment system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE420487B (en) * | 1980-03-05 | 1981-10-12 | Boliden Ab | PROCEDURE FOR CLEANING OF HEAVY METAL CONTAINING ACID WATER SOLUTION |
-
1974
- 1974-05-08 GB GB2039874A patent/GB1445652A/en not_active Expired
- 1974-05-21 FR FR7417730A patent/FR2230595B1/fr not_active Expired
- 1974-05-21 NL NL7406829A patent/NL7406829A/xx not_active Application Discontinuation
- 1974-05-22 JP JP5677674A patent/JPS5020567A/ja active Pending
- 1974-05-24 DE DE19742425202 patent/DE2425202A1/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115072812A (en) * | 2021-03-16 | 2022-09-20 | 宝山钢铁股份有限公司 | Silicon steel magnesium oxide wastewater recycling treatment method and treatment system |
| CN115072812B (en) * | 2021-03-16 | 2023-07-11 | 宝山钢铁股份有限公司 | Silicon steel magnesium oxide wastewater recycling treatment method and treatment system |
| CN113926469A (en) * | 2021-08-23 | 2022-01-14 | 浙江纳风净化技术有限公司 | Preparation method of photocatalyst activated carbon |
| CN113926469B (en) * | 2021-08-23 | 2024-04-19 | 浙江纳风净化技术有限公司 | Preparation method of photocatalyst activated carbon |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2230595B1 (en) | 1977-09-30 |
| FR2230595A1 (en) | 1974-12-20 |
| AU6856674A (en) | 1975-11-06 |
| JPS5020567A (en) | 1975-03-04 |
| NL7406829A (en) | 1974-11-27 |
| DE2425202A1 (en) | 1974-12-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |