Auxiliary equipment Zinc
List of auxiliary equipment
De-drossing machines
At GHI, we have designed different types of de-drossing machines specifically for zinc holding and melting furnaces, with the aim of allowing for quick and efficient furnace cleaning and protecting it from impact or inappropriate manoeuvres. This enables premium-quality metal to be obtained by keeping the smelting furnace clean and preventing the presence of dross in the cast.
The type of machine is selected depending on each case, and on the space available and type and number of furnaces to be served by the same machine. It may be floor or overhead-mounted.
Machines move on trolleys which allow them to traverse the entire furnace door opening(s). The rabble drive mechanism is mounted on the trolley, fitted with the servo-drives necessary for achieving precise movement and controlling the force applied for movements: tilting, extension and turning.
The rabble assembly can be rigid or telescopic depending on the type of machine, and is cooled to prevent its mechanisms from warping or damage. This ensures completely reliable operation. The control system monitors the position of the machine and rabble at all times, and adjusts the speed and pressure exerted so as to be appropriate for each work zone, thus ensuring that the furnace is not damaged and also simplifying worker tasks.
Value proposition
Prevents damage to furnace.
Reduces costs of using non-specific machinery which is damaged by working in highly demanding conditions close to the furnace.
Optimum bath cleanliness.
Improved working conditions for foundry workers.
| Types | Floor-mounted on embedded rails, or overhead |
| Applications | Melting furnaces and alloying furnaces, single or multiple |
Zinc cathode loading systems
GHI has developed automated systems for loading zinc cathodes coming from electrolysis processes in zinc smelting furnaces.
The system for introducing zinc sheets into the furnace comprises a line made up of a stack reception mechanism (loading table), a system for lifting stacks up to the furnace mouth (elevator) and two conveyors, which bring stacks to the tilting table one by one for subsequent introduction into the furnace.
The tilting table has a system for holding cathode stacks in place until they are picked up by the loading hoist. The hoist descends at a programmed speed so that cathodes are introduced into the zinc bath in a controlled manner to finish melting.
Value proposition
Automated furnace loading process.
Stacks can be held on the loading table until they are loaded into the furnace.
Process automation prevents damage to furnace.
Improved working conditions for foundry workers.
| Applications | Cathode melting furnaces |
| Maximum weight | Stacks weighing up to 9 tonnes |