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    • 5. 发明授权
    • Method for preparing aqueous mineral suspensions
    • 制备含水矿物悬浮液的方法
    • US5171725A
    • 1992-12-15
    • US725023
    • 1991-07-03
    • Tommy A. WrightHarvey M. GarrettDavid F. Dwiggins
    • Tommy A. WrightHarvey M. GarrettDavid F. Dwiggins
    • B28B17/02B28C1/00C04B33/18
    • B28B17/026B28C1/006C04B33/18
    • An improvement is disclosed applicable to systems where a mineral ore, such as a crude kaolin is introduced into a high shear, high energy mixing device with a suspending fluid and dispersing agents added to the same mixing device at controlled rates to produce a suspension with a solid content not more than 72% by weight. The process is applicable to systems where inorganic materials are suspended in a slurry, using water as the suspending fluid, in the presence of a dispersing agent, as for example in the processing of kaolin clay where the crude clay is formed into an aqueous suspension for the purpose of removing impurities and further processing. Heat is applied to the fluids in or before entering the mixing zone of the mixer, in sufficient quantity to raise the temperature of the suspension by at least 10.degree. C. This lowers the flow resistance of fluids in the mixing zone. In consequence less energy is required per unit of material processed, and more material may be processed in a given mixing unit. The heat may be added by several different methods, both directly and indirectly.
    • 公开了一种改进,其适用于将矿物如粗高岭土引入具有悬浮流体的高剪切,高能量混合装置的系统中,并且以受控的速率将分散剂加入到相同的混合装置中以产生具有 固体含量不超过72重量%。 该方法适用于在分散剂存在下使用水作为悬浮液将无机材料悬浮在浆料中的系统,例如在将粗粘土形成水性悬浮液的高岭土的加工中, 去除杂质和进一步加工的目的。 在进入混合器的混合区之前或之前,将热量施加到流体上,其量足以将悬浮液的温度升高至少10℃。这降低了混合区中流体的流动阻力。 因此,每单位处理的材料需要更少的能量,并且可以在给定的混合单元中处理更多的材料。 热量可以通过直接和间接的几种不同的方法加入。