(19)
(11) EP 0 201 338 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.11.1987 Bulletin 1987/46

(43) Date of publication A2:
12.11.1986 Bulletin 1986/46

(21) Application number: 86303504

(22) Date of filing: 08.05.1986
(84) Designated Contracting States:
DE FR GB IT SE

(30) Priority: 10.05.1985 US 732550

(71) Applicant: THE BABCOCK & WILCOX COMPANY
 ()

(72) Inventors:
  • Daley, Ralph D.
     ()
  • Redinger, Kevin E.
     ()

   


(54) Coal-water fuel production


(57) A process and apparatus for producing coal-water fuel comprises crushing and primary grinding of the coal to form a liberated granular material, multiple stage froth flotation of the granulated coal to reduce its ash content and pyritic sulphur content. The resulting product from the froth flotation operations is dewatered to yield a product having a selected solids content. A stable slurry is then produced from the product by establishing a selected particle size distribution. Refuse accumulated from the various previous steps is collected, dewatered and the water is clarified for use in the process steps.






Search report