Method of beneficiating phosphate ores containing dolomite
    82.
    发明授权
    Method of beneficiating phosphate ores containing dolomite 失效
    选择含有白云石的磷矿石的方法

    公开(公告)号:US4372843A

    公开(公告)日:1983-02-08

    申请号:US269449

    申请日:1981-06-02

    Abstract: A method of beneficiating a phosphate ore containing silica and an alkaline earth metal carbonate impurity, particularly dolomite or calcite. The steps include testing the ore for excessive levels of carbonate impurities, the use of conventional flotation steps to remove silica, grinding the ore to a particle size in which at least 90% of the ore particles are less than 0.355 mm and thereafter reagentizing the ground phosphate containing ore with water, a carbonate collector, a phosphate depressant and a pH regulator to obtain a flotation feed having a solids level of about 20-30% and a pH of about 5.6-6.0. The flotation feed is then subjected to a reverse flotation in a flotation cell to remove carbonate impurities as the cell overflow and to collect a phosphate concentration as the cell underflow.

    Abstract translation: 一种选择含有二氧化硅和碱土金属碳酸盐杂质的磷矿的方法,特别是白云石或方解石。 这些步骤包括测试矿石含量过多的碳酸盐杂质,使用常规浮选步骤去除二氧化硅,将矿石研磨至其中至少90%的矿石颗粒小于0.355mm的粒度,然后将地面反应 磷酸盐矿石与水,碳酸盐收集器,磷酸盐抑制剂和pH调节剂,以获得具有约20-30%的固体含量和约5.6-6.0的pH的浮选进料。 然后将浮选进料在浮选槽中进行反浮选,以在细胞溢出时除去碳酸盐杂质,并收集磷酸盐浓度作为下游池。

    Fluorspar ore flotation
    83.
    发明授权
    Fluorspar ore flotation 失效
    荧光浮选

    公开(公告)号:US3893915A

    公开(公告)日:1975-07-08

    申请号:US36989273

    申请日:1973-06-14

    Abstract: Flotation of fluorite from calcareous gangue with a fatty acid collector in an aqueous alkaline ore pulp is improved by adding an alkali metal bisulfite salt or an alkali metal thiosulfate salt before adding the collector.

    Abstract translation: 通过在加入收集器之前加入碱金属亚硫酸氢盐或碱金属硫代硫酸盐,可以改善碱性矿浆中含有石灰石ang石与富含脂肪酸收集剂的萤石。

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