Academic Center

All Issues
Latest Issue
Most Download Articles
Most Read Articles

Study on particle size distribution law of air flotation bubble and its influencing factors in coal slime flotation


SUN Xiaopeng,LIU Wenli,WANG Wensen,CHEN Sai,LIU Wei

Author Unit:

School of Chemical &Environment Engineering,China University of Mining &Technology(Beijing),Beijing ,China

Key Words:

dissolved air floatation;bubble size;dissolved-air pressure;foaming agent;normal distribution
  • Abstract
  • Paper Chart
  • Related Articles
  • Citation Format
In order to enhance the flotation effect of pressurized dissolved air flotation,the distribution of bubble size in this process was studied.The size of air bubbles was measured by the laboratory-made image-based air flotation bubble size measuring device.The fitting effects of Nukiyana-Tanasawa distribution,logarithmic normal distribution and normal distribution to the distribution of bubble size on different pressure and octanol alcohol concentrations were compared.The effects of dissolved gas pressure and foaming agent concentration on the size distribution of air-flotation bubbles were investigated.The results show that the bubble size distribution in the pressurized dissolved air flotation accords with the normal distribution law.The pressure of dissolution has a great influence on the bubble size,and with the increase of the pressure of dissolved gas,the Sauter diameter of the air bubble decreases gradually,the bubble size distribution density peak gradually shifts to the small size direction.With the increase of the concentration of octanol alcohol,the distribution of the bubble size is more concentrated,the distribution range is reduced,and the Sauter diameter is gradually reduced.
No Content Yet
May 15th,2022

Contact Us

  • All Rights of Website Desige Reserved©《COAL SCIENCE AND TECHNOLOGY》Editorial Department
  • 京ICP备05086979号-19

  • Address:8th Floor, Coal Building, District 13, Heping Street, Chaoyang District, Beijing:Ad & Finance Department(Room 1204),Editorial Department(Room 811)
  • Telephone:010-87986431(Ad Consult)
  • Mailbox: