NZ757065A - Method of treating titanium-containing slag - Google Patents
Method of treating titanium-containing slagInfo
- Publication number
- NZ757065A NZ757065A NZ757065A NZ75706517A NZ757065A NZ 757065 A NZ757065 A NZ 757065A NZ 757065 A NZ757065 A NZ 757065A NZ 75706517 A NZ75706517 A NZ 75706517A NZ 757065 A NZ757065 A NZ 757065A
- Authority
- NZ
- New Zealand
- Prior art keywords
- sulphuric acid
- titanium
- leach solution
- weight
- typically
- Prior art date
Links
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract 12
- 238000000034 method Methods 0.000 title claims abstract 12
- 229910052719 titanium Inorganic materials 0.000 title claims abstract 12
- 239000010936 titanium Substances 0.000 title claims abstract 12
- 239000002893 slag Substances 0.000 title claims abstract 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract 24
- 235000011149 sulphuric acid Nutrition 0.000 claims abstract 24
- 239000001117 sulphuric acid Substances 0.000 claims abstract 24
- 239000012535 impurity Substances 0.000 claims abstract 8
- 239000002002 slurry Substances 0.000 claims abstract 8
- 239000007788 liquid Substances 0.000 claims abstract 5
- 238000000926 separation method Methods 0.000 claims abstract 5
- 238000009835 boiling Methods 0.000 claims 2
- 238000001914 filtration Methods 0.000 claims 1
- 230000014759 maintenance of location Effects 0.000 claims 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- 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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/02—Apparatus therefor
-
- 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
-
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/066—Receptacle features where the slag is treated
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Extraction Or Liquid Replacement (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A method and an apparatus for treating titanium-containing slag is disclosed. The method comprises contacting a titanium-containing slag (2) with a first sulphuric acid leach solution (4) wherein the concentration of sulphuric acid is in the range of 2 to 20 weight-% for dissolving impurities contained in the slag to obtain a first slurry. In the method, the first slurry (8) is subjected to a solid-liquid separation (10) to obtain a first sulphuric acid leach solution containing the dissolved impurities from a first titanium-containing leach residue (12). The method further comprises contacting the titanium-containing leach residue (12) with a second sulphuric acid leach solution (16) for dissolving impurities contained in the titanium-containing leach residue to obtain a second slurry (18), and subjecting the second slurry (18) to a solid-liquid separation (20) to obtain a second sulphuric acid leach solution containing dissolved impurities from a second titanium-containing leach residue (22). The concentration of the sulphuric acid in the second sulphuric acid leach solution (16) is lower than or at the same level as in the first sulphuric acid leach solution (4).
Claims (6)
1. A method of treating titanium-containing slag, wherein the method comprises 5 a) contacting a titanium-containing slag with a first sulphuric acid leach solution, wherein the concentration of sulphuric acid is in the range of 2 to 20 weight-%, for dissolving impurities contained in the slag to obtain a first slurry, b) subjecting the first slurry to a solid-liquid separation to obtain a first sulphuric acid leach solution containing the dissolved impurities from a first 10 titanium-containing leach residue, c) contacting the titanium-containing leach residue with a second sulphuric acid leach solution for dissolving impurities contained in the titanium- containing leach residue to obtain a second slurry, d) subjecting the second slurry to a solid-liquid separation to obtain a 15 second sulphuric acid leach solution containing dissolved impurities from a second titanium-containing leach residue, wherein the concentration of the sulphuric acid in the second sulphuric acid leach solution is lower than or at the same level as in the first sulphuric acid leach solution. 20
2. The method according to claim 1, wherein the concentrations of sulphuric acid in the first and second sulphuric acid leach solution are selected independently and are in the range of 2 to 20 weight-%, more typically 3 to 15 weight-%, even more typically in the range of 5 to 15 weight-%, even more typically in the range of 8 to 12 weight-%. 25
3. The method according to claim 1 or 2, wherein the concentration of sulphuric acid in the first sulphuric acid leach solution is in the range of 3 to 15 weight-%, more typically in the range of 5 to 15 weight-%, even more typically in the range of 8 to 12 weight-%, and the concentration of the sulphuric acid in the second sulphuric acid leach solution is selected to be 2 to 10 weight-%, 30 typically 2 to 7 weight-%, more typically 2 to 5 weight-%.
4. The method according to any one of the preceding claims, wherein the temperatures of the first and second sulphuric acid leach solution are selected independently to be below the boiling point of the respective solution, typically the temperatures of the first and second sulphuric acid leach solution 35 are selected independently to be between 40 C and the boiling point of the respective solution. 19225960_1 (GHMatters) P45430NZ00
5. The method according to any one of the preceding claims, wherein retention times of steps a) and c) are selected independently to be in the range of 6 – 30 h, typically 10 – 20 h.
6. The method according to any one of the preceding claims, wherein 5 the solid-liquid separation in steps b) and d) is selected independently from filtering. 19225960_1 (GHMatters) P45430NZ00
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FI2017/050137 WO2018158492A1 (en) | 2017-03-02 | 2017-03-02 | Method of treating titanium-containing slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NZ757065A true NZ757065A (en) | 2022-12-23 |
Family
ID=63370573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NZ757065A NZ757065A (en) | 2017-03-02 | 2017-03-02 | Method of treating titanium-containing slag |
Country Status (6)
| Country | Link |
|---|---|
| CN (1) | CN110418852A (en) |
| CA (1) | CA3054603A1 (en) |
| EA (1) | EA037945B1 (en) |
| NZ (1) | NZ757065A (en) |
| PH (1) | PH12019501948A1 (en) |
| WO (1) | WO2018158492A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111100958B (en) * | 2020-02-15 | 2020-11-24 | 浙江三门太和大型锻造有限公司 | Combustion residue treatment device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3218131A (en) * | 1961-01-27 | 1965-11-16 | Independence Foundation | Process for recovery of titania values |
| US3368870A (en) * | 1963-12-06 | 1968-02-13 | Soloducha Nicolas | Method of producing titanium hydroxide and high grade pigments produced therefrom |
| US4038363A (en) * | 1975-10-21 | 1977-07-26 | Quebec Iron & Titanium Corporation-Fer Et Titane Due Quebec, Inc. | Upgrading sorelslag for production of synthetic rutile |
| US5085837A (en) * | 1988-07-28 | 1992-02-04 | E. I. Du Pont De Nemours And Company | Method for purifying TiO2 ore by alternate leaching with an aqueous solution of an alkali metal compound and an aqueous solution of mineral acid |
| WO1995024510A1 (en) * | 1994-03-08 | 1995-09-14 | Rgc Mineral Sands Limited | Leaching of titaniferous materials |
| AUPM511994A0 (en) * | 1994-04-15 | 1994-05-12 | Technological Resources Pty Limited | Leaching of a titaniferous material |
| WO1998054095A1 (en) * | 1997-05-30 | 1998-12-03 | Kemicraft Overseas Limited | Continuous non-polluting liquid phase titanium dioxide process |
| GB0817021D0 (en) * | 2008-09-17 | 2008-10-22 | Univ Leeds | Process |
| EP3114244A4 (en) * | 2014-03-05 | 2017-11-08 | Kamaleddine, Fouad F. | The production of high-grade synthetic rutile from low-grade titanium-bearing ores |
-
2017
- 2017-03-02 EA EA201991781A patent/EA037945B1/en unknown
- 2017-03-02 NZ NZ757065A patent/NZ757065A/en unknown
- 2017-03-02 WO PCT/FI2017/050137 patent/WO2018158492A1/en active Application Filing
- 2017-03-02 CN CN201780087625.8A patent/CN110418852A/en active Pending
- 2017-03-02 CA CA3054603A patent/CA3054603A1/en active Pending
-
2019
- 2019-08-22 PH PH12019501948A patent/PH12019501948A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN110418852A (en) | 2019-11-05 |
| EA201991781A1 (en) | 2020-01-30 |
| PH12019501948A1 (en) | 2020-06-01 |
| WO2018158492A1 (en) | 2018-09-07 |
| CA3054603A1 (en) | 2018-09-07 |
| EA037945B1 (en) | 2021-06-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PSEA | Patent sealed | ||
| ASS | Change of ownership |
Owner name: METSO OUTOTEC FINLAND OY, FI Effective date: 20231013 |
|
| RENW | Renewal (renewal fees accepted) |
Free format text: PATENT RENEWED FOR 1 YEAR UNTIL 02 MAR 2025 BY ABHISHEK KUMAR - CPA-PTO PAYMENTS Effective date: 20240201 |