蒸压法制备镍铁矿渣透水砖

发布时间：2018-07-02 07:06

  本文选题：镍铁矿渣 + 透水砖　； 参考：《矿产保护与利用》2017年02期

【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。
[Abstract]:The permeable brick with good performance can be prepared by taking Ni-Fe slag as the main raw material and adding proper amount of quicklime and other components through molding, static stopping, autoclaving curing and so on. The flexural strength, water permeability, wear resistance and freezing resistance of the samples were tested and analyzed. The results show that the addition of quicklime and slag powder in a certain range is beneficial to the improvement of the flexural strength, freezing resistance and wear resistance of the samples, but will decrease the permeability coefficient, and increase with the increase of the autoclaved temperature and the constant temperature time. The flexural strength, wear resistance and freezing resistance of the samples increased gradually, while the water permeability coefficient decreased gradually. The industrial test shows that the content of Ni-Fe slag in raw material is 84 and the content of quicklime is 160.The addition of micro-powder accounts for 20% of the raw material of Ni-Fe slag and 2% of the total amount of desulphurized gypsum is used for industrial test, and the autoclaved temperature is 190 鈩，

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