Rotary calcining system with cleaning means

An improved rotary calcining system for calcining materials of a tacky consistency having a propensity for adhering, comprising the combination of a rotary cylinder calciner having an upstream fed inlet and a downstream end wall provided with an outlet port connected with a discharge duct leading therefrom for carrying calcined material from the cylinder calciner, said combination being provided with a reciprocable cleaning plate located within said discharge duct adjacent to the calciner outlet port and arranged to reciprocally move from a terminal position within the discharge duct and adjoining a portion of said duct in a generally parallel relationship to an extended opposite terminal position of said cleaning plate projecting substantially through the outlet port to thereby free said port and adjoining portion of the duct of any adhering material.

An improved rotary calcining system for calcining materials of a tacky consistency having a propensity for adhering, comprising the combination of a rotary cylinder calciner having an upstream fed inlet and a downstream end wall provided with an outlet port connected with a discharge duct sloping downward at an acute angle with respect to the axis of the cylinder calciner for carrying calcined material from the cylinder calciner, said combination being provided with a reciprocable cleaning plate located within said discharge duct adjacent to the calciner outlet port and arranged to reciprocally move from a terminal position within the discharge duct and adjoining a portion of said duct in a generally parallel relationship to an extended opposite terminal position of said cleaning plate projecting substantially through the outlet port to thereby free said port and adjoining portion of the duct of any adhering material.

An improved rotary calcining system for calcining materials of a tacky consistency having a propensity for adhering, comprising the combustion of a rotary cylinder calciner having an upstream fed inlet and a downstream end wall provided with an outlet port connected to a discharge duct sloping downward at an acute angle with respect to the longitudinal axis of the cylinder calciner, said combination being provided with a reciprocal cleaning plate located within said downward sloping discharge duct adjacent to the calciner outlet port positioned in approximately the same sloping angle as the downward sloping discharge duct and arranged to reciprocally move from a terminal portion within the discharge duct adjoining a portion therein in close parallel relationship to an extended opposite terminal position of said cleaning plate projecting substantially through the outlet port to thereby free said port and adjoining portion of the duct of an adhering material.