低密度高强度陶粒支撑剂的制备及性能研究  

Preparation and Properties of Low-Density and High Strength Ceramic Proppants

作　　者：丰铭 吉国荣 高云峰 牟维鹏 朱保顺 田玉明 白频波[3] FENG Ming;JI Guorong;GAO Yunfeng;MU Weipeng;ZHU Baoshun;TIAN Yuming;BAI Pinbo(School of Materials Science and Engineering,Shanxi Institute of Science and Technology,Jincheng 048012,China;School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;Changqing Fracturing Proppant Co.,Ltd.,Yangquan 045200,China)

机构地区：[1]山西科技学院材料科学与工程学院,晋城048012 [2]太原科技大学材料科学与工程学院,太原030024 [3]阳泉市长青石油压裂支撑剂有限公司,阳泉045200

出　　处：《硅酸盐通报》2024年第12期4571-4577,4587,共8页Bulletin of the Chinese Ceramic Society

基　　金：山西省科技重大专项(20181101001);晋城市重点研发项目(20220102,20220104);山西科技学院科研启动经费项目(2024011)。

摘　　要：以二级铝矾土(Al_(2)O_(3)质量分数70.3%)和粉煤灰为原料,以不同含量的白云石为添加剂,在1350℃下烧结制备了低密度高强度的陶粒支撑剂,有效利用了固废粉煤灰,并探究了白云石对陶粒支撑剂晶粒发育的作用及对性能的影响。通过XRD、SEM及物理性能测试仪等表征手段,研究了白云石含量对铝矾土-粉煤灰系陶粒支撑剂微观结构及物理性能的影响。结果表明,适量白云石的添加可明显促进棒状莫来石晶体的生长发育,降低陶粒支撑剂的破碎率。此外,基体内闭气孔的产生可降低陶粒支撑剂的体积密度和视密度。当白云石的添加量为6%(质量分数)时,所制备的陶粒支撑剂性能最佳,体积密度为1.45 g/cm^(3),视密度为2.60 g/cm^(3),35 MPa下的破碎率为6.5%。A low-density and high strength ceramic proppant was prepared using secondary bauxite(Al_(2)O_(3)mass fraction 70.3%)and fly ash as raw materials,with different content of dolomite as additive,at a sintering temperature of 1350℃.The solid waste fly ash was effectively utilized,and the influence of dolomite on the grain development and properties of ceramic proppants was investigated.The influence of dolomite content on the microstructure and physical properties of bauxite-fly ash based ceramic proppants was studied through characterization methods such as XRD,SEM,and physical performance testers.The results show that the addition of appropriate content of dolomite can significantly promote the growth and development of rod-shaped mullite,and reduce the crushing rate of ceramic proppants.In addition,the formation of closed pores within the matrix can reduce the bulk density and apparent density of ceramic proppants.When the addition content of dolomite is 6%(mass fraction),the prepared ceramic proppants has the best performance,with a bulk density of 1.45 g/cm^(3),an apparent density of 2.60 g/cm^(3),and a crushing rate of 6.5%at 35 MPa.

关 键 词：铝矾土 粉煤灰 陶粒支撑剂 白云石 低密度 破碎率 

分 类 号：TQ174[化学工程—陶瓷工业]