Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound
Patent
1998-04-01
2000-07-18
Bos, Steven
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
423301, 423305, 423307, 423308, 423311, 423326, 4233271, 4233281, 4233282, 423335, 423340, 423490, 423605, 423 87, 423 89, 423 98, 423 49, 4231501, 423155, 4231572, 423179, 423202, 423 47, 423300, C01B 2510, C01B 2526, C01B 3320, C01B 3326, C01B 3312
Patent
active
060903538
ABSTRACT:
A process for removing impurities contained in the crystal lattice of minerals, comprising the steps of forming a mixture of a mineral capable of structurally reorganizing its crystal lattice which contains an impurity in its crystal lattice and a halogen anion, and water; heating the mixture to the mineral's structural reorganization transition temperature; holding the mixture at the structural reorganization transition temperature for a sufficient period of time to allow the impurity to freely migrate from the lattice to combine with the halogen anion; and separating the combined impurity and anion from the mixture to render the mineral essentially free of the impurity. The process is applicable to numerous minerals and impurities, but is especially useful to remove arsenic from fluorspar. Numerous halogen anions can be employed, such as chlorides, fluorides, bromides and iodides, but the preferred halogen anion is a metal chloride such as calcium chloride. Various matrix-forming additives may also be employed with the mixture to provide a receptor which immobilizes the impurity. Preferred additives are silicates, added in the form of bentonite or other clays.
REFERENCES:
patent: 412300 (1889-10-01), Selwyn
patent: 604167 (1898-05-01), Currie et al.
patent: 723787 (1903-03-01), Trivick
patent: 824663 (1906-06-01), Koehler
patent: 841328 (1907-01-01), Lander
patent: 913535 (1909-02-01), Moore
patent: 1103258 (1914-07-01), Brackelsberg
patent: 1124519 (1915-01-01), Ramen et al.
patent: 2592973 (1952-04-01), Sturgeon et al.
patent: 2681855 (1954-06-01), Holmberg
patent: 2686114 (1954-08-01), McGauley et al.
patent: 2756136 (1956-07-01), Queneau
patent: 2805120 (1957-09-01), Plant
patent: 2839361 (1958-06-01), Hollingworth et al.
patent: 3050364 (1962-08-01), Segrove
patent: 3078156 (1963-02-01), Yamaguchi
patent: 3116973 (1964-01-01), Haden, Jr.
patent: 3318685 (1967-05-01), Handwerk
patent: 3482964 (1969-12-01), Ishimitsu
patent: 3649245 (1972-03-01), Colombo et al.
patent: 3674424 (1972-07-01), Stanley et al.
patent: 3865240 (1975-02-01), Schick
patent: 4180546 (1979-12-01), Shibata et al.
patent: 4259106 (1981-03-01), Aaltonen et al.
patent: 4410496 (1983-10-01), Smyres et al.
patent: 4612171 (1986-09-01), Holmstrom
patent: 4642133 (1987-02-01), Makinen et al.
patent: 4983370 (1991-01-01), Loritsch et al.
patent: 5612008 (1997-03-01), Kirk et al.
Faulkner Bobby P.
Paustian John M.
Bos Steven
Svedala Industries Inc.
LandOfFree
Method of removing impurities from mineral concentrates does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of removing impurities from mineral concentrates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of removing impurities from mineral concentrates will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2033415