Rotary turntable furnace for litharge production

Patent · Tue Dec 23 04:00:00 EST 1986

OSTI ID:6968535

McKinney, B F

A furnace for heating particulate material comprising: top and side refractory walls defining a furnace chamber, at least one of the refractory walls defining a feed inlet for feeding particulate matter into the chamber. A discharge outlet for discharging the particulate material is outside the chamber, and a burner inlet communicates inside the chamber: heating means associated with the burner inlet for heating the particulate matter within the chamber: a turntable hearth rotatably driving the heart: a distributing means, including at least one screw auger rotatably disposed above the turntable hearth. This means is for mixing and conveying the contents of the chamber in a radial direction relative to the first axis of rotation of the turntable hearth by screw movement simultaneously with the rotation of the particulate material on the turntable hearth about the first axis of rotation. The distributing means includes first and second screw augers angularly spaced apart relative to the first axis of rotation of the turntable hearth, the second screw auger having an opposite pitch from the first screw auger; a second drive means connected to the screw auger for rotatably driving the screw auger in the chamber; and a third drive means connected to the second screw auger for rotatably driving the second screw auger at a slower speed than the first screw auger. The first and second screw augers distribute the particulate material in opposite radial directions relative to the center of the turntable hearth.

• Assignee: Oxide and Chemical Corp., Indianapolis, IN
• Patent Number(s): US 4631026
• OSTI ID: 6968535
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000* -- Engineering-- Combustion Systems
BURNERS
COMBUSTION CHAMBERS
DESIGN
FURNACES
HEATING
MIXING
MOTION
OPERATION
PARTICLES
PARTICULATES
REFRACTORIES
ROTATION
WALLS