蒸压法制备镍铁矿渣透水砖  

Preparation of Autoclaved Water Permeable Brick from Ferronickel Slag

作　　者：李国昌[1] 王萍[1] 

机构地区：[1]山东理工大学材料学院,山东淄博255049

出　　处：《矿产保护与利用》2017年第2期101-106,共6页Conservation and Utilization of Mineral Resources

摘　　要：以镍铁矿渣为主要原料,配以适量的生石灰等组分,经成型、静停、蒸压养护等工序,可以制备出性能良好的透水砖。对样品的抗折强度、透水性、耐磨性和抗冻性进行了测试与分析。结果表明:在一定的范围内添加生石灰和矿渣微粉对提高样品的抗折强度、抗冻性和耐磨性能有益,但会降低透水系数;随蒸压温度提高以及恒温时间的增加,样品的抗折强度、耐磨性和抗冻性逐步提高,而透水系数则逐步降低。工业试验生产表明,原料中镍铁矿渣含量为84%,生石灰含量为16%;微粉添加量占镍铁矿渣原料的20%,脱硫石膏为原料总量的2%,采用此配方进行工业试验,蒸压温度190℃,恒温时间6 h,所制透水砖性能符合GB/T25993—2010要求。The water permeable bricks with good performance were prepared with ferronickel slag and quicklime as raw materials. Rupture strength, permeability coefficient, abrasion resistance and frost resistance of samples were studied. The results showed that the addition of quicklime and slag powder could improve rupture strength, frost resistance and abrasion resistance of the samples, but reduce the permeability coefficient. With the increase of autoclave temperature and processing time, rupture strength, abrasion resistance and frost resistance of the samples increased gradually, while the permeable coefficient decreased gradually. The industrial trail test indicated that the per-formance of products met standard of GB/T 25993-2010, when the ferronickel slag raw materials （84% ） , quicklime （16%）,slag powder （20% of ferronickel slag raw materials） and gypsum （2%） were mixed as raw materials and autoclaved at 190℃ for 6 h.

关 键 词：镍铁矿渣 透水砖 抗折强度 透水系数 抗冻性 耐磨性能 

分 类 号：TD926.4[矿业工程—选矿]