Method for removing water content and grease deposit from...

Details Method for removing water content and grease deposit from... Method for removing water content and grease deposit from...

F - Mech Eng,Light,Heat,Weapons

26

B

53/354

F26B 3/18 (2006.01) C22B 1/00 (2006.01) C22B 1/16 (2006.01) C22C 33/00 (2006.01)

Patent

CA 1078628

ABSTRACT OF THE DISCLOSURE A method is provided herein for removing water and grease deposits from a rolling mill sludge to convert the sludge into a sinter raw material. The sludge has a water content of at least 20 percent by weight. The method comprises the sequence of steps of: firstly, positively reducing the water content of the sludge within the range of from 1 to 10 percent by weight, thereby reducing the viscosity thereof so as to ensure a smooth supply of the sludge; and (2) feeding the water-reduced sludge onto hot sinter at at least one sintering operation stage consisting of (i) a sinter discharge section, (ii) an entry section of a sinter cooler, (iii) a belt conveyor for fines return provided adjacent a hot screen therein, and (iv) a return hopper of a sintering apparatus for the operation, heat of the sinter produced in the oper- ation substantially completely removing the water and the grease deposits of the sludge. In this way, the grease deposit is substantially completely re- moved through combustion or evaporation with the use of the heat of the sinter produced by the sintering machine. It is also possible substantially to pre- vent fire accidents in an electrostatic precipitator, caused by grease de- posits therein from the rolling mill sludge.

246526

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