Abstract
This investigation addresses the study of the effects of the saponin isolated from the fruits of Sapindus laurifolia (S. laurifolia) as a dispersing and stabilizing agent in the pipeline transportation of iron ore (IO) particles. Two types of IO samples named S1 and S2, which are primarily constituted of hematite (Fe2O3) are taken for the study. The rheological behavior of iron ore water slurry (IOWS) has been studied as a function of saponin dosages, IO concentration, pH, temperature, and the shear rate-shear stress relationship. The isoelectric point of IOWS is calculated by the variation of zeta potential with pH. A suitable mechanism model is given to describe the interaction between S. laurifolia and IO particles. The economic effect of the dispersant has been examined based on slurry head loss, solids conveying rate, hydraulic power need, and specific power consumption (SPC) for the proposed IOWS pipeline to be introduced into commercial operation.
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