Research on the rheological and temperature-depended poperties of low-rank bitumite coking wastewater slurries

• 1、School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083
• 2、School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083

Abstract：Coking wastewater's components are complex, leading to treatment difficulties. Preparing the wastewater to slurries with low-rank bitumite can not only transform the high pollution components to simple and easy-treated inorganic molecules, but also utilize the heat it creats, and at the meanwhile expand the low-rank bitumite's application scope. Three coking wastewater samples of different treating depth, from a coking plant in Tangshan, were prepared slurries with a low-rank bitumite from a mine in Shanxi, and the slurries' rheological and temperature-depended poperties were also tested. The results indicated that: preparing slurries with the feed of clean-room can optimize the flowability of which is with clean water; the viscosities reduce when heating the slurries, until the temperature increase over a unique value; the change pattern of the viscosity is depended on the properties of the interstitial water, water film and dispersant molecules by heating the slurries.

Keywords： Coal Water Slurry coking wastewater low rank coal treatment