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Study on preparation and phosphorus adsorption of phosphate tailings ceramic particles by response surface method
Received date: 2024-10-09
Online published: 2025-02-14
Flotation of phosphate tailings is a solid waste generated during the flotation stage of phosphate ore.The tailings contain valuable elements such as calcium，magnesium，silicon，iron，and aluminum which have the potential for resource utilization.In order to improve the resource utilization rate of phosphate tailings，flotation phosphate tailings ceramic particles were prepared by grinding，granulation，drying，and calcination processes using primary and secondary phosphate tailings from a chemical plant in Hubei Province as the main raw materials，supplemented by montmorillonite as the binder.Single factor experiments were conducted and the Box-Behnken Design model was used to optimize the preparation process of ceramic particles.The addition amount of reverse selected phosphorus tailings，preheating temperature，roasting temperature，and roasting time were set as influencing factors，and the phosphorus adsorption rate was the response value.The influence of each influencing factor on the phosphorus adsorption rate was explored.The results showed that the optimal preparation process conditions for ceramic particles were 54% addition of reverse selected phosphorus tailings，preheating temperature of 401 ℃，roasting temperature of 950 ℃，and roasting time of 59 min.Under these conditions，the phosphorus adsorption rate was 99.60%.The ceramic particles were characterized and analyzed by using XRF，XRD，SEM，EDS，BET to explore their adsorption principle for phosphorus.This study provided a theoretical basis for the resource utilization of phosphate tailings.
HOU Daiwen , LIANG Huan , XING Lijing , LIU Hai , ZHANG Huali , TIAN Chengtao , SHI Tongshan . Study on preparation and phosphorus adsorption of phosphate tailings ceramic particles by response surface method[J]. Inorganic Chemicals Industry, 2025 , 57(11) : 74 -82 . DOI: 10.19964/j.issn.1006-4990.2024-0532
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