Apparatus for heat treating a particulate material

摘要: An apparatus for heat treating particulate material containing a combustible contaminant. The is fed into the upstream end of rotary drum and conveyed toward downstream drum. A fixed first tubular member disposed concentrically within includes small diameter inlet section larger outlet section. fuel burner located combustion gases from travel through to where expand are cooled. then discharged contact with vaporize contaminants. second mounted in radially spaced relation between provide inner outer annular chambers. vaporized contaminants pass chamber transfer high temperature member, thereby providing complete contaminants, while travels it subjected lower which will not adversely effect material.