Machine travelling grate

The machine most commonly used for sintering iron ores is a traveling grate, which is a modification of the Dwight-Lloyd continuous sintering machine formerly used only in the lead and zinc industries. Modern sintering machines may be 4 m (13 ft) wide by 60 m (200 ft) long and have capacities of 7200 Mg/day (8000 tons/day). 

Heat hardening of green iron-ore pellets is accomplished in a vertical shaft furnace, a traveling-grate machine, or a grate-plus-ldln combination (see Ball et al., op. cit.). 

The machine most commonly used for sintering iron ores is a travelling grate which is a modification of the Dwight-Lloyd continuous sintering ma-... 

Some characteristics of a modern travelling grate iron ore pelletizing machine [7]. 

Fig. 9.26 shows schematically the operating principle of such a travelling grate sintering machine. First, recirculated, fired (= sintered) fines from the sinter screens are deposited on the grate as a hearth layer. Then, feed, consisting of a blend of fine ore... 

Dust conveyor—Counterweighted dust volves Fig. 9.26 Schematic of an early travelling grate sintering machine. 

Fig. 6.S-13 Diagram of an early traveling grate sintering machine [B.97]...

Fig. 6.8-15 a) Side and hearth layer as well as green pellet feeding of a Lurgi-Dravo traveling grate machine, b) Sketch and thermal insulating effect of the hearth and side layers [B.18]... 

Fig. 6.8-17 I sometric drawings of the three major iron ore pelletizing processes [B.48, B.97], a) Balling drum circuits with shaft furnaces, b) Balling drum circuits with straight travelling grate machine, c) Balling drum circuit(s) or balling pan(s) with grate-kiln hardening system...

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