Continuous Sintering Furnaces

A continuous sintering furnace has two deaerating chambers, a furnace body, and a cooler. These furnaces are used for scaling a sintering-based manufacturing process.

The space between the inner face of the chamber and the outer face of the furnace body is filled with heat insulating material.

A conveyor tray carries the work material from entry side deaerating chamber to the furnace to exit side deaerating chamber .

At the exit-side deaerating chamber, the processed tray is removed. The diagram below shows a conventional continuous sintering furnace.

Refer to this patent for more information.

Mesh Conveyor Sintering Furnace

A mesh belt type continuous sintering furnace has a preheating unit, a sintering unit and a cooling unit.

The conveyance of the heating target is performed by placing the heating target on the endless mesh belt that travels from the inlet to the outlet of the furnace body.

The mesh belt is stretched around an inlet side and an outlet side pulley. The mesh belt passes under the furnace body, and returns to the entrance of the furnace body.

In the vicinity of the inlet side pulley and the outlet side pulley, tension pulleys are provided for adjusting the tension of the mesh belt.

Refer to this patent for more information.

Continuous sintering in gaseous environment

Continuous sintering can be done by first forming a bed of target material on a conveyor. The conveyor moves the material through different zones of the furnace with different temperatures. The zones include drying, cooling and a process zone.

During the process, gas should be circulated through the conveyor and the material bed. The gas circulation duct circulates gas from the last cooling zone to the drying zone.

The upper section above the material bed is where part of the gas flow that is conducted toward the drying zone in the upper section of the circulation gas duct is removed as an exhaust gas flow through an exhaust gas duct.

Part of the gas flow that is conducted toward the drying zone in the upper section of the circulation gas duct is removed through a bypass channel.

The temperature and volume of the gas flow traveling through the circulation gas duct and through the material bed in the drying zone is controlled by selectively controlling the rotation speed of an exhaust gas blower in the exhaust gas duct.

Refer to this patent for more information.

More articles on sintering