US3961940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Post-treatment of ilmenite ore subjected to selective chlorination treatment
Assignee: Mitsubishi Metal Corp
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Filing: 1974-11-15
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Granted: 1976-06-08
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Expires: 1994-11-15
Abstract
Abstract Process for post-treating a chlorinated ilmenite ore which has undergone a selective chlorination treatment in the presence of a solid carbonaceous material, which comprises subjecting the chlorinated ilmenite ore to a magnetic separation in a high magnetic field to separate it into a magnetic portion and non-magnetic portion, subjecting the residual of the solid carbonaceous material concentrated in the non-magnetic portion to flotation, using a frothing agent such as methylisobutylcarbinol and a collector for a sulfide ore such as xanthate, Aerofloat or the like, and washing a gangue value partially liberated from the ilmenite ore with water or suspending it in water in said flotation to separate these materials respectively thereby to produce an artificial rutile with a TiO2 content of at least 95% as a final product.
Inventors
- 👤 Seitaro Fukushima
- 👤 Ariyoshi Saito
- 👤 Fukuzo Kaneko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:25
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/012; B03D1/014; C22; C22B; C22B34/00; C22B34/10; C22B34/12; B03D2201/00; B03D2201/02; B03D2203/00; B03D2203/02; B03D2203/04; C01P; C01P2002/00; C01P2002/70; C01P2002/72; C01P2006/00; C01P2006/80; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
217 words
In a process for upgrading an ilmenite ore containing gangue materials to produce an artificial rutile comprising chlorinating the ilmenite ore in the presence of a solid carbonaceous material whereby the larger part of the iron value in the ilmenite ore is selectively chlorinated into chlorides thereof which are evaporated off during the chlorination under conditions which leave the titanium value in the ilmenite ore unchlorinated in the resulting chlorinated ilmenite ore, the improvement which comprises: 1. subjecting said resulting chlorinated ilmenite ore to magnetic separation in a high-intensity magnetic field, thereby to separate a magnetic portion and a non-magnetic portion of the chlorinated ilmenite ore, and then 2. subjecting the non-magnetic portion to flotation with the use of a frothing agent, and a collector selected from the group consisting of xanthates represented by the general formula ##EQU3## and dithiophosphates represented by the general formula ##EQU4## wherein R is an alkyl group containing 2 to 5 carbon atoms and M is a member selected from the group consisting of sodium, potassium and allyl, thereby to separate the residual of the solid carbonaceous material concentrated in the non-magnetic portion and a part of the gangue materials liberated from the ilmenite ore, and to obtain an artificial rutile of high titanium content as a tailing portion from the flotation.
Claim 2
Dependent Claim
217 words
In a process for upgrading an ilmenite ore containing gangue materials to produce an artificial rutile comprising chlorinating the ilmenite ore in the presence of a solid carbonaceous material whereby the larger part of the iron value in the ilmenite ore is selectively chlorinated into chlorides thereof which are evaporated off during the chlorination under conditions which leave the titanium value in the ilmenite ore unchlorinated in the resulting chlorinated ilmenite ore, the improvement which comprises: 1. subjecting said resulting chlorinated ilmenite ore to magnetic separation in a high-intensity magnetic field, thereby to separate a magnetic portion and a non-magnetic portion of the chlorinated ilmenite ore, and then 2. subjecting the non-magnetic portion to flotation with the use of a frothing agent, and a collector selected from the group consisting of xanthates represented by the general formula ##EQU3## and dithiophosphates represented by the general formula ##EQU4## wherein R is an alkyl group containing 2 to 5 carbon atoms and M is a member selected from the group consisting of sodium, potassium and allyl, thereby to separate the residual of the solid carbonaceous material concentrated in the non-magnetic portion and a part of the gangue materials liberated from the ilmenite ore, and to obtain an artificial rutile of high titanium content as a tailing portion from the flotation.
Claim 3
Dependent Claim
48 words
The process according to claim 1 wherein said collector for sulfide ore is used in a quantity ranging from 10 to 500g per ton of said non-magnetic portion, and said frothing agent is used in a quantity ranging from 10 to 500g per ton of said non-magnetic portion.
Claim 4
Dependent Claim
15 words
The process according to claim 1 wherein the magnetic field is at least 15,000 gauss.
Claim 5
Dependent Claim
15 words
The process according to claim 1 wherein the magnetic field is at least 20,000 gauss.
Claim 6
Dependent Claim
34 words
The process according to claim 1 wherein the iron component contained in said ilmenite is essentially in the form of an iron component selected from the group consisting of hematite, pseudobrookite and mixtures thereof.
Claim 7
Dependent Claim
18 words
The process according to claim 1 wherein said non-magnetic portion is washed with water prior to said flotation.
Claim 8
Dependent Claim
70 words
The process according to claim 1, wherein said residual of the solid carbonaceous material originates from petroleum coke used as the solid carbonaceous material used in said selective chlorination and consists of the unconsumed petroleum coke and ash produced from the consumed petroleum coke, and the unconsumed coke floats up to be recovered and the ash is withdrawn along with said gangue value from the suspension layer in said flotation.
Claim 9
Dependent Claim
25 words
The process according to claim 1 wherein the frothing agent is a compound selected from the group consisting of methylisobutylcarbinol, pine oil and ethylene glycol.
Claim 10
Dependent Claim
105 words
The process according to claim 1 wherein said tailing portion from the flotation is further subjected to a scavenging operation in a scavenging solution containing an alkylamine derivative having an alkyl group of 8 to 18 carbon atoms selected from the group consisting of alkylamine acetates and alkylamine hydrochlorides in a quantity ranging from 5 to 100g per ton of said non-magnetic portion, thereby to cause a part of the solid carbonaceous material still remaining in said tailing portion from the flotation to float up, and to obtain an artificial rutile of still higher titanium dioxide content as a tailing portion from the scavenging operation.
Claim 11
Dependent Claim
27 words
The process according to claim 9 wherein said scavenging solution further contains kerosene in a quantity ranging from 10 to 500g per ton of said non-magnetic portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |