Application of Synthetic Mineral Microparticles with Various Metal Species

摘要: Synthetic mineral microparticles (SMM) is a patented system which has been developed to promote drainage of water and retention fine particles during papermaking. It shown in patents that the SMM can have advantages both retention, compared with montmorillonite (bentonite), one most popular materials presently used this kind application. Turbidity gravity time were measured using Britt-Jar test representative formulations, order confirm efficacy covering wide range compositions discover effects some key variables potential lead unexpected terms effectiveness microparticles, when combination cationic polyacrylamide treatment papermaking furnish. An iron silicate showed highest performance, as well suitably fast relative other metal bentonite. Zinc improved drainage. synthesized from aluminum sulfate (Al₂(SO₄)₃) did not show benefit drainage, chloride (AlCl₃) performed better than bentonite Al/Si ratios 0.76 1.00. was found ratio neutralization are considered, pH variation due change be factor control size primary degree coagulation particles.