High temperature incineration (HTI) runs at higher temperatures than normal. Conventional incineration is a self-sustaining process, because only combustible wastes are treated. Since HTI has a powerful burner and runs at 1500°C (whereas a conventional incinerator runs at 700 to 1000°C), a small percentage of metal, air filters, and insulation can be incinerated along with other combustible waste. The waste is melted in a rotating furnace, then discharged at a controlled rate with water jet cooling to produce a granular product.