阴-非离子表面活性剂微乳捕收剂的制备及应用

针对煤泥浮选过程中烃油捕收剂分散性差、耗量大的缺陷,采用自制的阴-非离子表面活性剂LYS制备柴油微乳捕收剂LY,并通过煤泥浮选试验对LY和柴油的浮选性能进行了比较。通过拟三元相图法,确定微乳捕收剂配方中最佳助表面活性剂为正戊醇,最佳Km（表面活性剂/助表面活性剂的质量比）=1.5;通过激光粒度测试法、电导率法和染色法测定和评价微乳捕收剂的性质,优化出最佳配方为柴油∶LYS∶正戊醇：水=5∶3∶2∶6（质量比）,微乳类型为O/W,平均粒径30.71 nm;分别采用柴油和LY作为捕收剂对试验煤样进行了浮选试验,试验结果表明,两种捕收剂获得的最佳浮选完善指标相近,但LY的用量比柴油低100 g/t,...

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Bibliographic Details
Published in煤炭学报 Vol. 39; no. 11; pp. 2315 - 2320
Main Author 李琳 刘炯天 王运来 吕宪俊 李书强
Format Journal Article
LanguageChinese
Published 2014
Subjects
微乳捕收剂
拟三元相图
浮选
煤泥
阴-非离子表面活性剂
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Summary:针对煤泥浮选过程中烃油捕收剂分散性差、耗量大的缺陷,采用自制的阴-非离子表面活性剂LYS制备柴油微乳捕收剂LY,并通过煤泥浮选试验对LY和柴油的浮选性能进行了比较。通过拟三元相图法,确定微乳捕收剂配方中最佳助表面活性剂为正戊醇,最佳Km（表面活性剂/助表面活性剂的质量比）=1.5;通过激光粒度测试法、电导率法和染色法测定和评价微乳捕收剂的性质,优化出最佳配方为柴油∶LYS∶正戊醇：水=5∶3∶2∶6（质量比）,微乳类型为O/W,平均粒径30.71 nm;分别采用柴油和LY作为捕收剂对试验煤样进行了浮选试验,试验结果表明,两种捕收剂获得的最佳浮选完善指标相近,但LY的用量比柴油低100 g/t,柴油节油率可达到73%左右（不考虑表面活性剂）,综合成本比柴油节省0.23元/t煤泥。
Bibliography:LI Lin, LIU Jiong-tian, WANG Yun-lai, LU Xian-jun, LI Shu-qiang （ 1. Chemical and Environmental Engineering College,Shandong University of Science and Technology, Qingdao 266590, China ;2. National Engineering Research Center of Coal Preparation and Purification, China University of Mining ＆ Technology. ,Xuzhou 221116, China ;3. Tangshan Senpu Engineering Design Co. ,Ltd. , Tangshan 064000, China）
Aim at the collecting agent dispersion,consumption of large amount of hydrocarbon oil trapping defects in coal slime flotation,the self-made anionic-nonionic surfactant is used in preparing diesel microemulsified collector LY for the defects of poor dispersion and large consumption,and the performance of microemulsified diesel and conventional diesel collectors was compared by coal flotation tests. Through pseudo-ternary phase diagram method,it is found that Kmvalue is1. 5 and N-amyl alcohol is the optimum microemulsion co-surfactant; and then according to the estimation of characteristics of microemulsified collecto
ISSN:0253-9993