烧结温度对添加复合助剂制备莫来石-刚玉基陶粒支撑剂性能的影响  

Influence of Sintering Temperature on Performance of Mullite-corundum Proppant Prepared by Adding Compound Additive

作　　者：力国民[1] 常鑫 朱保顺 王凯悦[1] 周毅[1] 武雅乔[1] 田玉明[1] 白频波 LI Guo-min;CHANG Xin;ZHU Bao-shun;WANG Kai-yue;ZHOU Yi;WU Ya-qiao;TIAN Yu-ming;BAI Pin-bo(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]太原科技大学材料科学与工程学院,太原030024 [2]阳泉市长青石油压裂支撑剂有限公司,阳泉045200

出　　处：《人工晶体学报》2018年第9期1850-1854,共5页Journal of Synthetic Crystals

基　　金：国家自然科学基金(51802212);太原科技大学博士科研启动基金(20152030);山西省自然科学基金(201601D102019);山西省研究生联合培养基地人才培养项目(2018JD34)

摘　　要：为了降低陶粒支撑剂的烧结温度,本文以低品位铝矾土和粘土为主要原料,通过添加复合助剂锰矿粉及白云石制备陶粒支撑剂,并研究烧结温度对陶粒支撑剂结构、性能的影响。在烧结过程中发现,引入一定量的锰矿粉和白云石后,在陶粒内部会形成适量液相,可以填充孔隙,包覆于莫来石和刚玉晶粒间促进晶体的生长发育,从而形成致密结构。当烧成温度为1310℃时,制备得到的支撑剂体积密度与视密度分别为1.65 g/cm3和2.99 g/cm3,52MPa闭合压力下破碎率为8.97%,符合石油天然气行业标准对低密、高强陶粒支撑剂的要求,说明复合助剂在降低烧结温度的前提下还能够提高支撑剂抗破碎能力。In order to reduce the sintering temperature,the low-grade bauxite and clay were used to prepare the proppant by adding dolomite and manganese ore fines.The influence of sintering temperature on the structure and performance of proppant was also studied in this paper.It was found that the proper amount of liquid phase will form during the sintering process when the compound additives were introduced,filling the pores and encapsulating the mullite and corundum grain to form the dense structure.Furthermore,the bulk density and apparent density of the proppants sintered at 1310℃are 1.65 g/cm 3 and 2.99 g/cm 3,with the breakage ratio of 8.97%under 52 MPa closure pressure,which meets the requirements of oil and gas industry for low-density and high-intensity proppants.The results showed that the compound additives could not only reduce the sintering temperature,but also enhance the crush resistance.

关 键 词：陶粒支撑剂 复合添加剂 烧结温度 破碎率 

分 类 号：TQ174.75[化学工程—陶瓷工业]