矿产综合利用2024，Vol.45Issue(2)：138-143,6.DOI:10.3969/j.issn.1000-6532.2024.02.023
超声处理对煤泥组分沉降速度的影响
Influence of Ultrasonic Treatment on the Sedimentation Performance of Slime
摘要
Abstract
This is an article in the field of mining engineering.Kaolinite and montmorillonite are the main clay minerals in coal slime,and clay minerals are the main factors affecting the sedimentation of coal slime.This paper takes clean coal,kaolinite and montmorillonite as the research objects.The influence of ultrasonic intensity,action time,and ultrasonic pulse interval on its sedimentation effect and floc diameter was investigated.The test results show that when the ultrasonic density is 0.4 W/cm3,when the ultrasonic action time is 2 min,the sedimentation speed of kaolinite and montmorillonite are improved.Further choosing the appropriate ultrasonic pulse interval can further improve the sedimentation effect,but ultrasonic treatment is not conducive to the clean coal settlement.Further,the clean coal,kaolinite and montmorillonite samples were mixed at a ratio of 2∶1∶1,and the ultrasonic pulse interval time was changed to perform ultrasonic treatment.The results showed that:for the mixed sample,it settled without ultrasonic treatment,the velocity is 2.67 cm/min.When the ultrasonic density is 0.2 W/cm3 and the ultrasonic pulse interval is 4 s,the settling velocity is increased to 5.41 cm/min.Image analysis and potential characterization show that the proper ultrasonic pulse interval time enables the drug to play more fully,and then the electric double layer is compressed to the greatest extent,and finally the particle agglomeration and the growth of flocs are the best.关键词
矿业工程/煤泥/沉降/超声处理/絮团Key words
Mining engineering/Coal slime/Sedimentation/Ultrasonic treatment/Flocs分类
矿业与冶金引用本文复制引用
张晓彬,温欣,曹伟伟,李忠山,谭静..超声处理对煤泥组分沉降速度的影响[J].矿产综合利用,2024,45(2):138-143,6.基金项目
国家自然科学基金-青年科学基金项目(51874230) （51874230）
河北省高等学校科学技术研究项目(QN2020530) （QN2020530）
唐山市人才资助项目(A201903011) （A201903011）
