Coal-water slurry producing system

Patent · Tue Sep 13 04:00:00 EDT 1988

OSTI ID:6673625

Takamoto, S; Meguri, N

A coal-water slurry producing system is described comprising: a continuous type ball mill comprising a rotatable cylindrical mill with an inlet and an outlet, respectively, provided at each end of the mill and arranged at a rotational center of the mill for grinding coal with water and additives to produce a coal-water slurry; a rotatable screen apparatus disposed at the mill outlet to remove coarse coal particles contained in the coal-water slurry produced by the ball mill, the screen apparatus comprising a slurry inlet port connected to the mill outlet, an outlet port for coarse coal particles provided on a side opposite to the slurry inlet port and a cylindrical metal screen disposed between the slurry inlet port and the outlet port and adapted to pass the coal-water slurry containing coal particles other than the coarse coal particles therethrough; strainer means for removing coal particles of a predetermined size and above from the slurry; feeding means for feeding the coal-water slurry from the screen apparatus to the inlet of the strainer means; delivery means for delivering the coal-water slurry filtered by the strainer means from the product outlet of the strainer means to a slurry storage tank; first returning means for returning the non-filtered coal-water slurry to the mill entrance; and second returning means for returning the coarse coal particles removed by the screen apparatus to the mill entrance.

• Assignee: Babcock-Hitachi Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4770352
• OSTI ID: 6673625
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010300* -- Coal
Lignite
& Peat-- Preparation-- (1987-)
CHEMICAL PREPARATION
COAL FINES
COAL PREPARATION
COAL PREPARATION PLANTS
DESIGN
DISPERSIONS
EQUIPMENT
FILTERS
FUEL FEEDING SYSTEMS
FUEL SLURRIES
FUEL SYSTEMS
FUELS
INDUSTRIAL PLANTS
MATERIALS HANDLING EQUIPMENT
MIXTURES
OPERATION
PRODUCTION
PULVERIZERS
SCREENS
SEPARATION PROCESSES
SLURRIES
SUSPENSIONS
SYNTHESIS