Patent US2804375A successfully refreshed from Google Patents.
US2804375A
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Cyclic process for the beneficiation of titania ores and slags
Assignee: Millennium Petrochemicals Inc
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Filing: 1953-05-28
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Granted: 1957-08-27
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Expires: 1973-05-28
Abstract
No abstract record available.
Inventors
- 👤 Kamlet Jonas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:09
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1204; C22B34/1213; Y; Y10; Y10S; Y10S423/00; Y10S423/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A CYCLIC PROCESS FOR THE BENEFICIATION OF TITANIA SLAGS AND ORES WHICH COMPRISES THE STEPS OF : (A) TREATING THE COMMINUTED REW METERIAL WITH HYDROCHLORIC ACID AT A TEMPERATURE BETWEEN 60*C. AND 110*C. AND SEPARATING THE FILTRATE OF IRON CHLORIDES FROM THE INSOLUBLE RESIDUE OF IRON OXIDE-POOR TITANIUM DIOXIDE CONCENTRATE, (B) REACTING THE ACID FILTRATE OF IRON CHLORIDES OBTAINED IN STEP (A) WITH A STOICHIOMETRIC AMOUNT OF AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF MAGNESIUM OXIDE, MAGNESIUM HYDROXIDE AND BASIC MAGNESIUM CHLORIDE, AND SE THE IRON HYDROXIDES FROM THE SOLUTION OF MAGNESIUM CHLORIDE THUS OBTAINED, AND (C) CONCENTRATING THE MAGNESIUM CHLORIDE SOLUTION OBTAINED IN STEP (B) AND SUBMITTING SAID MAGNESIUM CHLORIDE TO HYDROLYSIS AT TEMPERATURES BETWEEN 110*C. AND 600*C. WHEREBY THERE ARE REGNERATED THE HYDROCHLORIC ACID EMPLOYED IN STEP (A) AND THE BASIC MAGNESIUM COMPOUND EMPLOYED IN STEP (B).
Claim 2
Dependent Claim
141 words
A CYCLIC PROCESS FOR THE BENEFICIATION OF TITANIA SLAGS AND ORES WHICH COMPRISES THE STEPS OF : (A) TREATING THE COMMINUTED REW METERIAL WITH HYDROCHLORIC ACID AT A TEMPERATURE BETWEEN 60*C. AND 110*C. AND SEPARATING THE FILTRATE OF IRON CHLORIDES FROM THE INSOLUBLE RESIDUE OF IRON OXIDE-POOR TITANIUM DIOXIDE CONCENTRATE, (B) REACTING THE ACID FILTRATE OF IRON CHLORIDES OBTAINED IN STEP (A) WITH A STOICHIOMETRIC AMOUNT OF AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF MAGNESIUM OXIDE, MAGNESIUM HYDROXIDE AND BASIC MAGNESIUM CHLORIDE, AND SE THE IRON HYDROXIDES FROM THE SOLUTION OF MAGNESIUM CHLORIDE THUS OBTAINED, AND (C) CONCENTRATING THE MAGNESIUM CHLORIDE SOLUTION OBTAINED IN STEP (B) AND SUBMITTING SAID MAGNESIUM CHLORIDE TO HYDROLYSIS AT TEMPERATURES BETWEEN 110*C. AND 600*C. WHEREBY THERE ARE REGNERATED THE HYDROCHLORIC ACID EMPLOYED IN STEP (A) AND THE BASIC MAGNESIUM COMPOUND EMPLOYED IN STEP (B).
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) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |