1. School of Metallurgy and Energy, North China University of Technology, Tangshan 063210, Hebei, China; 2. Tangshan Huaxian Technology Co., Ltd., Tangshan 063210, Hebei, China; 3. School of Materials Science and Engineering, North China University of Science and Technology, Tangshan 063210, Hebei, China; 4. Tianjin Xintiangang Iron and Steel Group Co., Ltd., Tianjin 300000, China
Abstract：In order to realize the high value-added synergistic utilization of dust remoral ash and fly ash, a method of preparing ceramic fiber by dust removal ash and fly ash was proposed. Because the traditional slag powder agglomeration process parameters were not suitable for the mixture of dust removal ash and fly ash, the drop strength was chosen as the evaluation index, and the water content, binder ratio and molding pressure as main influencing factors. The response surface methodology was used to optimize the design and analysis for process parameters of cold consolidation molding for dust removal ash and fly ash. The results show that the water content and binder ratio has significant effect on the drop strength, while the molding pressure has little effect. The interaction between water content and binder ratio is obvious. By analyzing the experimental results, a binomial model of the drop strength under this batching condition was established. The optimal process parameters predicted by the model are water mass fraction 7.68%, binder ratio 5.91%, and molding pressure 38.8 MPa. Experiments are conducted using these parameters, and the error between the drop strength obtained and the model prediction is less than 2%, which can be used as the prediction model. According to this parameter, the ratio test of different fly ash and dust removal ash is conducted, and the results meet the expectations, which can provide qualified cold consolidation press blocks for subsequent high-temperature reduction experiments.
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2023, Vol. 33 
