油页岩灰渣碱法制取白炭黑的工艺研究  

Study on alkaline preparation of ultrafine silica from oil shale ash

作　　者：周建敏[1] 谭丽泉[1] 余梅[1] 牛显春[1] 林卓娴 王键[1] 

机构地区：[1]广东石油化工学院,广东茂名525000

出　　处：《无机盐工业》2016年第10期56-59,共4页Inorganic Chemicals Industry

基　　金：2012年广东省科技计划项目(2012B031000020);2011年广东省科技计划产学研项目(2011B090300105);2011年广东省茂名市科技计划项目(11A36);2013年广东省科技计划项目(2013B021000011);2012年广东省茂名市科技计划项目(2012B01042)

摘　　要：以广东省茂名市油页岩灰渣为原料,采用碱溶法制备白炭黑,考察了碱溶条件对白炭黑产率的影响。结果表明,碱溶法制取白炭黑的碱溶最佳工艺为:c(氢氧化钠)=4 mol/L,n(氢氧化钠)/n(二氧化硅)=5∶1,碱溶温度为110℃,碱溶时间为4 h,焙烧温度为750℃,焙烧时间为2.5 h。在最佳条件下制备的产品,白炭黑的产率为81.49%、白度为98.1%。对白炭黑进行了FT-IR表征及性能测试,所制白炭黑符合化工行业标准(HG/T 3061—2009)的要求。Ultrafine silica was prepared by alkaline method using the oil shale ash as the raw material from Maoming,Guangdong. The effects of parameters of alkaline leaching process on the leaching rate of ultrafine silica were particularly studied,and the optimum conditions were obtained：concentration of sodium hydroxide was 4 mol/L,the amount-of-substance ratio of sodium hydroxide to silica was 5∶1,alkaline leaching temperature was 110 ℃,acid leaching time was 4 h,calcination temperature was 750 ℃,and calcination time was 2.5 h.Under these optimum conditions,the yield was 81.49% and the brightness was 98.1%.The prepared product was characterized by IR and the properties were tested.The quality of prepared ultrafine silica could meet the requirements according to chemical industry standard HG/T 3061—2009.

关 键 词：油页岩灰渣 白炭黑 碱溶法 产率 

分 类 号：TQ127.2[化学工程—无机化工]