全尾矿基轻质发泡陶瓷的制备及正交试验研究  

Orthogonal Experimental Study on the Preparation of Lightweight Foamed Ceramics by Tailings

作　　者：王维清[1,2] 张杰 朱欣宇[1] 朱阳戈 黄阳 Wang Weiqing;Zhang Jie;Zhu Xinyu;Zhu Yangge;Huang Yang(College of Environmental Engineering and Resources,Southwest University of Science and Technology,Mianyang,Sichuan 621010;BGRIMM Technology Group,Beijing 102628)

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621010 [2]矿冶科技集团有限公司,北京102628

出　　处：《非金属矿》2022年第1期90-93,97,共5页Non-Metallic Mines

基　　金：政府间国际科技创新合作重点专项(2018YFE0183200);四川省科技厅重点研发项目(2020YFS0336);矿物加工科学与技术国家重点实验室开放基金(BGRIMM-KJSKL-2020-16)。

摘　　要：以四川某钒钛磁铁矿浮选尾矿、长石尾矿和高岭石型硫铁尾矿为主要原料,制备轻质发泡陶瓷。基于原料化学成分分析进行物料配比、磨矿细度、SiC用量试验及L_(16)(4^(4))烧成制度正交试验。结果表明,优选试验质量配比为:钒钛磁铁矿尾矿30%、长石尾矿50%、高岭石型硫铁尾矿20%,外掺发泡剂碳化硅质量分数0.4%。确定最优烧成制度为:升温速率5℃/min,烧成温度1 150℃,烧成时间10 min,降温速率10℃/min。最优条件下制备的发泡陶瓷表观密度为463.8 kg/m^(3),抗压强度达到3.16 MPa,体积吸水率为1.67%,为尾矿高附加值综合利用提供了数据基础。Vanadium-titanium magnetite flotation tailings, feldspar tailings, and kaolinite-type pyrite tailings in Sichuan were used as the main raw material for the preparation of lightweight foamed ceramics. The relationship among the material properties, the ratio of raw materials, grinding fineness, SiC dosage, and L_(16)(4^(4)) orthogonal research of sintering system were studied based on the chemical analysis. The results showed that the optimum formula was as follows: vanadium-titanium magnetite tailings of 30%, feldspar tailings of 50%, and kaolinite-type pyrite tailings of 20%, and mixing with SiC in an amount of 0.4%. Based on these tests, the optimal firing system was determined as follows: firing temperature of 1 150 ℃, heating rate of 5 ℃/min, firing time of 10 min, and cooling rate of 10 ℃/min. The bulk density of the final foamed ceramics was 463.8 kg/m^(3),the strength reached 3.16 MPa, and the water absorption rate was 1.67%. Therefore, this study provided a data basis for the high value-added and comprehensive utilization of tailings.

关 键 词：钒钛磁铁矿浮选尾矿 长石尾矿 高岭石型硫铁尾矿 发泡陶瓷 正交试验 

分 类 号：X75[环境科学与工程—环境工程] TD985[矿业工程—选矿]