逐步插层法制备矿用可膨胀石墨的实验研究  

Experimental research on preparation of expansible graphite for mineral using step interpolation method

作　　者：张迎新 王怡飞 李成林 Zhang Yingxin;Wang Yifei;Li Chenglin(School of Safety Engineering,Heilongjiang University of Science & Technology,Harbin 150022,China;School of Environmental & Chemical Engineering,Heilongjiang University of Science & Technology,Harbin 150022,China)

机构地区：[1]黑龙江科技大学安全工程学院,哈尔滨150022 [2]黑龙江科技大学环境与化工学院,哈尔滨150022

出　　处：《黑龙江科技大学学报》2019年第4期419-423,共5页Journal of Heilongjiang University of Science And Technology

摘　　要：为获得适用于矿井火区裂隙的高倍率永久充填材料,将可膨胀石墨引入火灾治理领域,采用逐步插层工艺制备方法,开展低起始高倍率可膨胀石墨制备实验研究,分析工艺参数对其膨胀容积的影响。实验表明,制备可膨胀石墨的最佳工艺参数为石墨、高氯酸、硝酸铵质量比1∶8.0∶0.15,预氧化时间10min,初次氧化剂用量0.22g,单次氧化剂用量0.03g,逐步插层时间间隔7min,逐步氧化剂用量0.15g,反应时间90min。400℃时,其膨胀容积达到最大值,为407mL/g。该方法制备的膨胀石墨优于直接插层法膨胀石墨,为煤矿井下火区充填材料研究提供了参考。This paper aims to obtain the material suitable for permanent filling with high rate of fissure in mine fire area by introducing expansible graphite into the field of fire control.The paper proposes a step-by-step intercalation process based on the preparation method of direct intercalation process.The study is focused on the preparation experiment of expansible graphite with low initial and high rate and the analysis of the effect of process parameters on its expansion volume.The results show that expansible graphite prepared under the conditions of mass ratio of graphite,perchloric acid and ammonium nitrate 1∶8.0∶0.15,pre-oxidation time 10 min,initial oxidizer amount 0.22 g,single oxidizer amount 0.03 g,step-by-step intercalation time 7 min,step-by-step oxidizer amount 0.15 g and reaction time 90 min features the maximum expansion capacity of 407 mL/g at 400℃.This study could provide a reference for the study of filling materials in coal mine fire area.

关 键 词：可膨胀石墨 逐步插层法 膨胀容积 氧化剂用量 

分 类 号：TQ127.11[化学工程—无机化工] TD753[矿业工程—矿井通风与安全]