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The Thermo-drum or Drier cum Mixture unit is long rotating cylindrical drum. It is mounted on sturdy and robust steel structure fabricated from Girders and Channels. The Drum is driven by friction drive supported by 4 nos. of Trunnion Rollers running on heavy duty Bearings. Three nos. Rollers mounted on thrust bearing supports the Guide ring taking care-of the down hill thrust produced due to the Degree provided to the Thermo-drum.
Flame Guard is provided in the Thermo-drum to restrict the Burner flame to reach up to the mixing zone. This Flame Guard divides the Thermo-drum into two zones viz.
1) Heating + Drying zone 2) Mixing zone
The specially designed thick `J’ type + `W’ type comb lifting flights have been bolted in both the zones in the zigzag / straight pattern which creates a dense veils of aggregate in front of burner flame, uniformly heats the aggregates and gives best mixing.
The rotational drive to Drum is Friction Drive through Trunnion rollers coupled with Geared motor through suitable Coupling.
The Thermo-drum is insulated with Ceramic Glass Wool and covered with Stainless Steel sheet to prevent the heat loss and to save Fuel as well as the life of the Drum. The discharge chute is fitted with replaceable type chute liners and it will discharge the material directly on the Load out Conveyor. The Multi Cone Dust Collecting system mounted on the same chassis allows optimum efficiency in accordance with the present ecological regulations.
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