7.2　Distribution of Green Balls

7.2.1　Distribution of green balls in shaft furnaces shall be further improved.The shuttle carriage which is used for distributing green balls onto drying bed shall travel in line with the route of balls distribution，and shall reciprocate at a speed to match the feed conveyor with proper reciprocating stroke corresponding to the length of drying bed.

7.2.2　For large and medium-scale plants of straight grate and grate-kiln，combination of reciprocating conveyor or swing conveyor，wide belt and roller feeder should be applied for distribution of green balls.

7.2.3　Where reciprocating conveyor is applicable，the reciprocating head should be driven by hydraulic cylinders to perform the reciprocating movement，and distributing green balls in a one-way mode.The stroke and speed of reciprocating should be adjustable.In the event that swing conveyor is applied，the frequency and range should be adjustable.Either reciprocating conveyor or swing conveyor shall match with wide belt conveyor properly.

7.2.4　Transfer numbers，transportation distance and drop height shall be minimized as much as possible during distributing green balls onto indurating machines.

7.2.5　Wide belt conveyor shall be provided with variable belt speed control.The pulley center distance should not be too large.Green balls shall be well distributed on the conveyor.The width of the conveyor shall be slightly larger than that of the roller feeder.

7.2.6　The inclination of the roller feeder shall be adjustable and should not be less than 16°.Individual drive of each roller shall be available.The length of the roller shall be capable to distribute green balls across the entire bed on traveling grate or straight grate machine.

7.2.7　Where necessary，anti-sticking guide chutes shall be provided during distribution of green balls onto induration machine.