Product - No-Bell Top Charging System

​Modern bulk charging and burden distribution system​​

The new concept of the No​​-Bell Top® charger allows for better burden distribution in the blast furnace as well as a quick exchange of the chute system. The compactness of the No-Bell Top® System ensures an easy exchange of a double-bell system. With the flexible chute system of the No-Bell Top® it is possible to charge the burden and coke to any position in the blast furnace. It ensures that the coke is effectively directed and piled in the appropriate destination generating a better gas exploitation and lowers consumption of reducing agents. No-Bell Top® is also equipped with a quick changing device for the complete chute system.​​

 

Key features

The essential features of the No-Bell Top® are its reliable gas tightness to prevent leakage as well as precise and quick material distribution. The efficiency of existing furnace processes can be considerably increased and the emissions reduced. The consumption of reduction agents can be reduced and the performance of the blast furnace increased. Due to the cost savings, the return of investment could be less than one year.

  • Constant chute angle guaranteesperfect distribution due to superiorburden guidance

  • No lifting and lowering of the chute;this reduces torque and load to the gear guidance

  • Reduced wear due to low drop height of burden into the chute system

  • Several charging models possible (ring, spiral, sector, point, etc.)

  • Fast relocation of the charging position

  • Less energy consumption

  • Simple gearbox design with push rods

  • Nitrogen-purged gearbox

  • Gearbox protection due to complete water cooled and insulated shell

  • Perfect gas seal

  • Easy access for maintenance

  • Quick exchange of the charger

  • Very compact height

  • Two identical frequency controlled motors

  • Upper chute is ceramic lined


Benefits

  • New compact design (easy exchange of old double bell system)

  • No complicated tilting gearbox

  • Low gearbox loads

  • Simple exchange (new benchmark in “maintenance friendly”)

  • Less modifications of the steel structure at the blast furnace top

  • Low investment cost

  • Perfectly controlled burden distribution

  • Perfect Center Coke

  • Lower reduction agent consumption

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​Product specification

ND upper gas shut-off valve*700/1000 mm

ND lower gas shut-off valve*​700/1000 mm

ND material control valve*700/1000 mm

ND lower chute*700/1000 mm (elliptical)

ND = nominal diameter


Max. operating pressure​​
To customer requirements

Design pressureTo customer requirements

Abnormal occurance inside blast furnacePeak of 1000ºC for maximum of 5 minutes 

Rotational speed
0-12 rpm​

​Pr​oduct breakdown​​

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Product - No-Bell Top Charging System