金属尾矿制备生物陶粒的研究

Preparation of Bio-ceramic from Metal Tailings Research

阐述了利用江西某金属矿的尾矿、炉渣、粉煤灰制备一种多孔滤料陶粒的方法。实验结果表明:粒径5～30mm、粒子密度1.5～2.5g/cm3、堆积密度0.65～1.3g/cm3、比表面积7.2～13.5m2/g、酸可溶率<0.7%、筒压强度6.5～9.1MPa、吸水率0.1%～5%的陶粒质轻多孔,比表面积大,附着的微生物量大,孔隙率高,微生物挂膜快,老化生物膜易脱落。

This article elaborated using the Jiangxi some metalliferous ore debris,the slag and the pulverized coal ash prepares one kind porously to filter the material ceramsite the method.The experimental result indicated that：particle size 5-30mm,granule density 1.5-2.5 g/cm^3,stack density 0.65-1.3 g/cm^3,ratio surface area 7.2-13.5 m^2/g,the acid may dissolve rate 〈0.7%,the tube presses intensity 6.5-9.1 MPa,the waterabsorptivity 0.1%-5% ceramsite nature lightly porous, is bigger than,the microorganism quantity the surface area which adheres to stick cohere is big,the factor of porosity is high,the microorganism hangs the membrane to be quick,the aged biomembrane easy to fall off.