Experimental Study on Multiphase Material Preparation from Iron Tailings AITranslate

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Chinese Library Classification Number:X753[环境科学与工程—环境工程]

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Cordierite-mullite multiphase material was prepared by solid sintering with iron tailings as raw material,and knar clay,Suzhou soil,burn talc and alumina powder as auxiliary material.Performance indexes of the multiphase material were measured including apparent porosity,water absorption,linear shrinkage ratio,bending strength and thermal shock resistance,and then the effects were investigated of the factors on material performance such as molar ratio of cordierite to mullite,amount of iron tailings and calcination temperature.The crystalline phase and microstructure of the multiphase material were analyzed by XRD and SEM.The results show that the highest bending strength is 29.79 MPa and thermal shock resistance experiment reaches 72 times for the synthetic material mainly composed of cordierite and mullite crystals with a small amount of liquid but no other impurity phase.