Kaolin flotation process
    22.
    发明授权
    Kaolin flotation process 失效
    KAOLIN FLOTATION PROCESS

    公开(公告)号:US3744630A

    公开(公告)日:1973-07-10

    申请号:US3744630D

    申请日:1970-11-02

    Inventor: SMITH S

    Abstract: Titanium mineral impurities are removed from Kaolin by forming an acidic dispersion of Kaolin, water and dispersing agent (acidic relative to the flotation pH), adding a collector to the dispersion, conditioning the acidic dispersion, raising the pH by the addition of reagent to the dispersion, subjecting the dispersion to a froth flotation step and recovering the Kaolin having a reduced titanium mineral impurity content.

    System and method of concentrating niobium ore

    公开(公告)号:US11738353B2

    公开(公告)日:2023-08-29

    申请号:US16603446

    申请日:2018-04-06

    Abstract: Methods for niobium concentration from a carbonatite host rock are presented. A basic process for niobium mineral concentration involves performing niobium mineral flotation, on a sufficiently liberated ore slurry, using at one least aromatic hydroxamate collector; and at least one lead salt as a performance modifier. A more optimized process further includes dispersion. A further optimized process includes: magnetic separation, dispersion, sulphide removal, fine suspended particle removal, and niobium cleaner flotation stages. The use of one of number of tested lead salts during flotation improves the yield, and lowers the cost as a significantly lower amount of the collector is required. The process is useful for recovering a variety of species of niobium minerals such as fersmite, pyrochlore, columbite, fergusonite, niobium-containing rutile, and niobium-containing ilmenite.

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