Cocoa butter blocks should be melted before to be put into chocolate conche. The tanks are cylinder shape, there are heating tubes in the jacket tanks, so cocoa butter blocks can be put on them and melted quickly. It will meltThe main material of chocolate is cocoa butter, and it is usually in solid.Before the chocolate material is put into the refiner/conche,the melting process is needed.Further more the cocoa butter melting tank can extend the life of refiner/conche.Our Cocoa butter melting tank is water jacket , fat contact parts in stainless steel 304 , others are in mild steel Q235, the jacket tank can be all ss304. It is heated by electrical heater.