Study on Water Absorption and Saturation Coefficient of Sintered Brick with Electrolytic Manganese Slag
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摘要:
以电解锰渣为主要原料制备电解锰渣烧结砖，研究了烧结温度、烧结时间、Ca添加量、Si添加量对烧结砖吸水率和饱和系数的影响。结果表明：烧结砖吸水率、饱和系数随烧结温度、烧结时间的增加呈下降的趋势；烧结砖吸水率、饱和系数随Ca添加量的增加呈上升的趋势；烧结砖吸水率、饱和系数随Si添加量的增加呈先降后升的趋势。电解锰渣烧结砖制备的较佳工艺条件：烧结温度为850℃，烧结时间为2.5 h，Ca添加量为0，Si添加量为24%。此时，电解锰渣免烧砖的吸水率为15.81%，饱和系数为1.03，性能较好。
Abstract:Effects of sintering temperature, sintering time, amount of Ca and Si on water absorption and saturation coefficient of sintered brick were studied. Results showed that: With the increase of sintering temperature and time, the water absorption and saturation coefficient of sintered brick decreased. With the increase of the amount of Ca, the water absorption and saturation coefficient of sintered brick increased. With the increase of Si content, the water absorption and saturation coefficient of sintered brick decreased first and then increased. Optimum technological conditions for the preparation of electrolytic manganese slag sintered brick were: the sintering temperature was 850℃, the sintering time was 2.5 h, the amount of Ca added was 0, and the amount of Si added was 24%. At this time, the water absorption rate and saturation coefficient of the electrolytic manganese slag fired free brick were 15.81% and 1.03, respectively, and the performance was better.
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Key words:
- Electrolytic manganese slag /
- Fired brick /
- Water absorption /
- Saturation coefficient
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表 1 预处理后电解锰渣主要化学成分/%
Table 1. Main chemical composition of electrolytic manganese slag after pretreatment
SiO2 CaO Al2O3 Fe2O3 SO3 MnO MgO 28.76 17.59 9.84 12.11 23.02 3.91 0.97 
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