Rotary furnace with furnace tube

Abstract

The invention discloses a rotary furnace with a furnace tube, and belongs to the field of metallurgical equipment. The rotary furnace comprises a bottom plate, wherein a furnace body is arranged on the bottom plate; the furnace body comprises the furnace tube arranged on the center line of the furnace body and rotating along with the furnace body and a liner plate arranged on the inner side wall of the furnace body; a combustor is also arranged outside the end, at which a material discharging hopper is arranged, of the furnace body; a plurality of heat radiating gaps are arranged in the outer walls of the furnace tube; the cross section of the furnace tube is orthohexagonal; material collecting plates are arranged on all lateral edges of the outer walls of the furnace tube. A material is elevated by the liner plate, falls onto a space formed by two material collecting plates of the furnace tube and the side walls of the furnace tube, and generates a first-time mixing; a thermal current passes through the inner cavity of the furnace tube and passes through the heat radiating gaps to form circumferential thermal currents, and carries out uniform heating on the material falling onto the side walls of the furnace tube; as the furnace body rotates continuously, the material falls beside an inner liner plate of the furnace body once again from a space between the two material collecting plates, and generates second-time mixing; the circulation is realized; the heating process of the rotary furnace is enabled to become more uniform and faster.

Description

Technical field [0001] The invention relates to a metallurgical equipment for baking and drying materials, in particular to a rotary furnace with a furnace tube. Background technique [0002] Rotary furnace is a kind of thermal equipment for calcining, roasting or drying granular and powdery materials. It is widely used in the production of titanium dioxide. The existing rotary kiln is usually equipped with a high and a low end. The high end of the rotary kiln is equipped with an inlet hopper and a smoke collecting device, and a discharge hopper and a burner are arranged at the lower end, using the heat radiation from the combustion of the burner. And the smoke and dust heat the titanium dioxide raised by the liner, and this traditional rotary furnace can only heat the titanium dioxide from the lower end. The titanium dioxide is heated unevenly at different positions and is set on the inner wall of the rotary furnace. The mixing effect of the upper liner on the repeated tumblin...

AI Technical Summary

Problems solved by technology

Existing rotary kilns are usually equipped with one high and one low two ends. The high end of the rotary kiln is equipped with a hopper and a dust collection device, and the low end is equipped with a hopper and a burner. The heat radiation brought by the combustion of the burner is used to And the smoke heats the titanium dioxide raised by the lining plate, but this traditional rotary furnace can only heat the titanium dioxide from the lower end, the titanium dioxide is not evenly heated at different positions, and is arranged on the inner wall of the rotary furnace The mixing effect of the upper liner on the repeated tumbling titanium dioxide is not ideal, and the heating efficiency is low, which reduces the production efficiency

Images