The behavior of the fine solid mixture in a fluid depends critically on its rheological property. The rheological properties of a mixture change based on factors like particle size distribution, shape, density, etc. In this paper, two different minerals with distinct densities and similar size distribution with its mixture at different proportions (i.e., at 10–90% of magnetite/chromite ore: silica) were used for settling and rheological studies. Experiments were piloted using both mono-density and dual component mixture having poly-dispersed sample sets at different solids percentage (10–60%) for the hindered settling studies followed by rheological studies in the double-gap rheometer setup in a controlled shear rate method. The viscosity of the slurry decreased with an increased percentage of heavier particles in the mixture. Using the experimental data set, the effect of component density on the rheology of a particulate slurry mixture was assessed, and a multi-component viscosity mathematical model was developed.

精细固体混合物在流体中的行为关键取决于其流变性。混合物的流变特性会根据颗粒大小分布，形状，密度等因素而变化。在本文中，两种不同密度不同且混合物大小不同的矿物具有不同的密度和相似的大小分布（即占混合物的10-90％）。磁铁矿/铬铁矿：二氧化硅）用于沉降和流变研究。使用具有不同固体含量（10-60％）的多分散样品组的单密度和双组分混合物进行了先导实验，用于受阻沉降研究，然后在双间隙流变仪中以受控剪切速率方法进行了流变学研究。随着混合物中较重颗粒的百分比增加，浆料的粘度降低。