生物基微乳捕收剂的制备及其在煤泥浮选中的应用  

Preparation of bio-based microemulsion collector and its application in coal slime flotation

作　　者：李琳[1] 贺萌 李晓腾[1] 吕剑桥 由晓芳[1] LI Lin;HE Meng;LI Xiaoteng;LYU Jianqiao;YOU Xiaofang(College of Chemical and Biological Engineering,Shandong University of Science and Technology,Qingdao,Shandong 266590,China)

机构地区：[1]山东科技大学化学与生物工程学院,山东青岛266590

出　　处：《中国矿业大学学报》2022年第4期779-790,共12页Journal of China University of Mining & Technology

基　　金：国家自然科学基金项目(51904174,52074175);山东省高等学校青创科技支持计划项目(2020KJD001);山东省自然科学基金项目(ZR2020ME103)。

摘　　要：针对传统煤泥浮选捕收剂用量大的问题,本文以生物可降解的腰果酚衍生物(CDS-1)、正构醇、柴油、水为原料制备微乳捕收剂(DCMC).拟三元相图研究表明:正戊醇是此微乳体系的最佳助表面活性剂.采用混料设计试验法确定了微乳捕收剂中CDS-1、正戊醇、柴油和水的最佳配比为20.25∶16.88∶29.11∶33.76,平均粒径为37.28 nm,离心后其粒径几乎没有变化,且保持澄清透明.DCMC在水中分散的粒径范围为0~10.50μm,远小于柴油.在精煤产率和灰分相近的情况下,DCMC的用量比柴油节省83.33%,且不需添加起泡剂,简化了浮选药剂制度.浮选动力学研究表明:DCMC的浮选过程符合一级矩阵分布模型.Aiming at high doses issue of traditional collectors for slime flotation, biodegradable cardanol derivatives(CDS-1), N-alcohol, diesel oil, and water were used as raw materials to prepare microemulsion collectors(DCMC). The pseudo-ternary phase diagram shows that n-pentanol is the best co-surfactant for this microemulsion system. The mixture design test method was used to find out that the optimal ratio of CDS-1, n-pentanol, diesel oil and deionized water in the microemulsion collector is 20.25∶16.88∶29.11∶33.76. The average particle size of DCMC is 37.28 nm. Moreover, the particle size of DCMC had little change after centrifugation, and its appearance remains clear and transparent. The particle size range of DCMC dispersed in water is 0—10.50 μm, which is much smaller than that of diesel. The amount of DCMC is 83.33% less than that of diesel when the yield and ash content of the clean coal is similar, and no foaming agent is required, which simplifies the flotation reagent system. The flotation dynamics shows that the flotation process of DCMC conforms to the first-order matrix distribution model.

关 键 词：微乳捕收剂 腰果酚聚氧乙烯醚 煤泥 浮选 拟三元相图 混料法 

分 类 号：TD94[矿业工程—选矿]