Application:

The KRO – 12.1. The crusher is designed to break gating and pop-off systems of castings and other objects. The crusher breaks the aforementioned elements into small and uniform pieces suitable for further recycling or for melting.

It can be used to break elements of the following materials:

• grey iron,
• ductile iron.

Advantages:

Application of the KRO-12.1. crusher in a melting plant ensures considerable economic results. It reduces the initial volume of gating and pop-off systems up to 65%. By breaking these elements before they are melted in a melting furnace the following benefits are obtained:

a) Increase of a melting furnace performance by over 50%:

• increase of charge density,
• considerable reduction of melting time,
• a crane with with solenoid grips can grasp 3-4 times more charge. material,
• it takes less time to fill a crucible,
• opening time of furnace lid is shortened thus saving electric energy.

b) Cost reduction of liquid metal melting:

• reduction of scrap charge volume to 65%,
• considerable reduction of handling costs,
• reduced number of necessary transporting containers,
• reduction of transportation way of a fork-lift truck because crushers can be installed near melting furnaces,
• elimination of manual breaking of foundry scrap,
• considerable reduction of costs of labour,
• improvement of industrial safety conditions, reduction of possible injury rate of workers,
• increased humanisation of work.

c) Additional benefits:

• less residues of moulding sand adhering to gating and pop-off systems. Moulding sand adhering to metal drops off due to breaking the systems into small pieces,
• small and uniform pieces of charge reduce damage of refractory lining of melting furnace,
• elimination of suspension of charge in transporting containers,
• elimination of suspension of charge in the crucible of melting furnace,
• fine and uniform foundry scrap prevents damages of transporting conveyors system and avoids costs of production stops,
• the KRO – 12.1.2 CRUSHER is a machine easy to built in and incorporate in process lines used in foundries.

Technical specifications of the KRO-12.12:

	Unit	Wartość
Nominal capacity – grey iron / ductile iron	t/h	8/4
Crushing force	kN	600÷4000
Crushing space (charging throat)	mm x mm	1200 x 1200
Total time of crushing cycle	s	70
Installed power	kW	26