We are having Thermfire 3000 sand reclamation system manufactured by Gudgeon Thermfire International Inc., Canada.
Advantages of thermal sand reclamation
- Better surface finish and less porosity. Reducing chemical additives reduces the gas that is generated. Besides calcining and cooling the sand the Thermfire vigorously classifies and removes fines which improve the venting of the mold.
- More dimensionally accurate castings. While the Thermfire calcines the sand, it creates expanded silica sand grains which do not go through the same expansion as new sand during every pour. In steel foundries this can limit or eliminate the need for iron oxides, zircon and chromite sands.