Synthesis, characterization and application of a dispersant based on rosin for coal-water slurry  

作　　者：Li Junguo Zhang Guanghua Shang Ting Zhu Junfeng 

机构地区：[1]Key Laboratory of Additives of Chemistry & Technology for Chemical Industry, Ministry of Education [2]College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology

出　　处：《International Journal of Mining Science and Technology》2014年第5期695-699,共5页矿业科学技术学报（英文版）

基　　金：the financial supports provided by the National Natural Science Foundation of China (No. 21176148) ;the Scientific Subject Foundation of the Education Department of Shaanxi Provincial Government of China (No. 11JK0562)

摘　　要：A rosin derivative and maleopimaric acid diethanolamide(MAD), was synthesized, characterized by FTIR and1 H NMR, and applied as dispersant for the coal-water slurry(CWS) prepared from Chinese Shenfu coal. The CWS application performance investigation shows that the MAD dispersant has better abilities in reducing CWS viscosity and stabilizing the slurry than a commercial dispersant—sulfonated naphthalene-formaldehyde condensate(SNF). The physicochemical property investigation of the two tested dispersants shows that the adsorption amount of the MAD at coal-water interface is much larger than that of SNF, and the MAD has better wetting property than the SNF on the coal surface. It indicated that the excellent capabilities of MAD are related to the adsorption mode of standing upright on the coal surface. Based on the above, the mechanism of dispersion and stabilization of the CWS prepared from MAD dispersant is presented.A rosin derivative and maleopimaric acid diethanolamide （MAD）, was synthesized, characterized by FTIR and 1H NMR, and applied as dispersant for the coal-water slurry （CWS） prepared from Chinese Shenfu coal. The CWS application performance investigation shows that the MAD dispersant has better abilities in reducing CWS viscosity and stabilizing the slurry than a commercial dispersant-sulfonated naphtha- lene-formaldehyde condensate （SNF）. The physicochemical property investigation of the two tested dispersants shows that the adsorption amount of the MAD at coal-water interface is much larger than that of SNF, and the MAD has better wetting property than the SNF on the coal surface. It indicated that the excellent capabilities of MAD are related to the adsorption mode of standing upright on the coal surface. Based on the above, the mechanism of dispersion and stabilization of the CWS prepared from MAD dispersant is presented.

关 键 词：Rosin derivative Coal-water slurry Dispersant Adsorption 

分 类 号：TD849[矿业工程—煤矿开采]