The present invention relates to a float-glass manufacturing apparatus including a float bath and a heat treatment furnace, in which the heat treatment furnace includes: a dross box including a plurality of lift-out rolls; an annealing furnace including a plurality of lehr rolls; a first partitioning part; a second partitioning part; a gas ejection nozzle; and a guide member.

The present invention relates to a float-glass manufacturing apparatus including a float bath and a heat treatment furnace, in which the heat treatment furnace includes: a dross box including a plurality of lift-out rolls; an annealing furnace including a plurality of lehr rolls; a first partitioning part; a second partitioning part; a gas ejection nozzle; and a guide member.

A lift-up roller arrangement for electronic float glass, including a plurality of lift-up rollers rotatably arranged on the inner wall of an annealing kiln, wherein a plurality of boron nitride rings are fixedly sleeved on the outer side wall of each lift-up roller; a heat-resisting steel tubes is arranged on each of both sides of each lift-up roller; a plurality of exhaust holes are arranged on an outer side wall of the heat-resisting steel tube; the heat-resisting steel tube is in communication with an external hot gas supply case; and a plurality of cleaning assemblies used in cooperation with the lift-up rollers are arranged at the inner bottom of the annealing kiln.

A lift-up roller arrangement for electronic float glass, including a plurality of lift-up rollers rotatably arranged on the inner wall of an annealing kiln, wherein a plurality of boron nitride rings are fixedly sleeved on the outer side wall of each lift-up roller; a heat-resisting steel tubes is arranged on each of both sides of each lift-up roller; a plurality of exhaust holes are arranged on an outer side wall of the heat-resisting steel tube; the heat-resisting steel tube is in communication with an external hot gas supply case; and a plurality of cleaning assemblies used in cooperation with the lift-up rollers are arranged at the inner bottom of the annealing kiln.