Babcock-Hitachi Kabushiki Kaisha

Masayasu Murata

Hirofumi Kikkawa

Kazunori Shoji

Yoshinori Ohtani

Nobuyasu Meguri

Shigehito Takamoto

Hiroyuki Kaku

Yasuyuki Nishimura

Hiroshi Terada

A process for continuously and automatically producing a high concentration coal-water slurry having a uniform quality is provided, which process comprises always monitoring the viscosity, concentration, pH, particle diameter distribution and the like of the slurry, detecting the variations of the foregoing and adjusting the quantity of coal fed, the quantity of water fed and the quantities of a surfactant and a pH adjustor added to thereby control the specifications of the coal-water slurry to definite ones.

Process for producing a high concentration coal-water slurry

A process for producing a coal-water slurry having a high coal concentration (generally 60 to 80% by weight or more) and a lower viscosity, at a lower cost and with a smaller amount of dispersing agent added is provided, which process is directed to a process for producing a high concentration coal-water slurry by feeding coal, water and a dispersing agent into a wet, continuous ball mill and wet-milling them, characterized by feeding the dispersing agent in a multi-stage manner along the milling direction of coal within the ball mill.

Process for producing a coal-water slurry

Growing community of inventors

Hasuda, Japan

Masayasu Murata