Opening type roasting fire way pulling brick and method of fire hole arrangement

Abstract

The invention relates to a fire way pulling brick and a method of a fire hole arrangement, in particular to an opening type roasting fire way pulling brick and a method of the fire hole arrangement used for a nonferrous metallurgy industry. A staggering arrangement is adopted on the height direction of the roasting fire way pulling brick. A U-shaped or a reversed U-shaped arrangement is formed through four pulling bricks on every corner position of the fire way 'W' flowing form. The distance between the two fire holes in the middle portion is reduced. The distance of the fire holes on two sides and the fire holes in the middle portion is increased. The fire way pulling brick and the method of the fire hole arrangement have the advantages that gas flowing of the fire way pulling brick and a back flow area of a separating wall is improved, thus the gas flowing of the fire way is uniform and uniformity of the temperature is increased. The length of flame is prolonged and quantity of passing fire of a passing fire hole is reduced. The heat transferring efficiency in the fire way of the high temperature hot air is improved. The quantity of the pulling bricks is increased partially, stability of the fire way structure is improved, and thus service life of the fire way is prolonged.

Description

technical field [0001] The invention relates to a method for arranging fire path bricks and fire holes, in particular to a method for arranging fire path bricks and fire holes for an open roasting furnace used in the non-ferrous metallurgical industry. Background technique [0002] The open roasting furnace adopts the method of indirect heating of high-temperature flue gas and roasted products to roast the roasted products at high temperature. The high-temperature flue gas transfers heat to the roasted products in the material box through the flue wall. At the same time, the flow direction of the flue gas is changed by pulling bricks to achieve the effect of uniform flow field; in the forced heating stage, additional fuel is added to the fire channel through the fire hole for combustion. In actual use, there are the following problems. [0003] 1) There is a serious "edge effect" when the flue gas flows in the flue, and the unevenness of the flow directly affects the unifor...

AI Technical Summary

Problems solved by technology

[0003] 1) There is a serious "edge effect" when the flue gas flows in the flue, and the unevenness of the flow directly affects the uniformity of heat transfer

[0004] 2) Since there is no pull brick in the local position, this area is prone to deformation due to high temperature and side pressure of the material box during use

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