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Suspensions of calcium carbonate are of a major concern in various fields, such as coating, painting and ceramics and their rheological properties are very important. The effect of polyacrylic acid (PAA) of different molecular mass as a surface modifier on the surface and rheological properties of the aqueous suspension of calcium carbonate was investigated. The effect of the volume fraction of particles...
Paenibacillus polymyxa bacteria strain as a surface modifier in a flotation process could remove 64.89% of MnO2 from high manganese iron ore. A concentrate containing 3.7% MnO2, 0.5% SiO2 and 71.30% Fe2O3, with a hematite recovery of 72.46% is produced from a feed containing 8.79% MnO2, 0.49% SiO2 and 67.90% Fe2O3. The bio-flotation results indicated that such type of bacteria is selective for upgrading...
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