TREATMENT OF FILTRATION EARTHS
In the aluminum rolling process, the constant quality of rolling oil is continuously ensured by diatomaceous earth filtration. The saturated filtering earth must be periodically replaced and disposed; normally, the disposal product is composed of 50% diatomaceous earths and 50% rolling oil. The innovative Formeco system allows the complete dryness of the filtration earth and the recovery up to 90% of the rolling oil contained therein. The pay-back time of the investment is extremely short, thanks to the recovery of rolling oil and the quire reduced disposal cost of the filtration earths.