Study on Deashed Coal : Water Slurry Prepared with Water-Soluble Polymer

水溶性高分子を用いた脱灰炭 : 水スラリーに関する研究

Study on Deashed Coal : Water Slurry Prepared with Water-Soluble Polymer

Creators Fukunaga Kimitoshi

Creators Nakai Shigeyuki

Creators Sawada Morihiko

Creators Kimura Makoto

The preparations of stable and nonviscous deashed coal-water slurry (CWS) with water-soluble polymer and surface active agent have been studied. The effects of species of polymer and surface active agent, polymer concentration, and deashed coal concentration on the settling stability and fluidity of CWS were experimentally determined. It was found that the most desirable polymer for producing both settling stability and fluidity of CWS was the equivalent Xanthangum-Locust bean gum mixture (X-LB (1 : 1) mixture), which forms aqueous solutions exhibiting significant yield value at low concentrations. By addition of the correct ammount of X-LB (1 : 1) mixture and using suitable surface active agent, a practical static stability can be developed in most CWSs, but normally with some sacrifice in fluidities depending on coal concentration.

[ISSN]0372-7661

[NCID]AN00244228