A kind of manufacturing method of powder material high temperature calcining rotary furnace furnace tube

Abstract

The invention discloses a high-temperature roasting rotary furnace furnace-tube for a powder material. The high-temperature roasting rotary furnace furnace-tube comprises a tube body, spiral sheets and a connecting rod, which are integrated in a welding mode, wherein three connecting rod mounting holes which are used for welding and fixing the spiral sheets to position are uniformly distributed onthe tube body; three grooves used for positioning are formed in the spiral sheets; after the spiral sheets are processed and welded in sections, the connecting rods are blocked into the three groovesof the spiral sheets; the connecting rod and the spiral sheets are welded or adopt a bayonet blocking structure; the spiral sheets are blocked into the tube body; and the spiral sheets are rotated for enabling the connecting rod to align to the three mounting holes in the tube body, so that the connecting rod and the tube body are welded into an integer. Compared with the prior art, the high-temperature roasting rotary furnace furnace-tube is not liable to cause accumulation of the powder material, enables the material to be mutually dispersed, is more in turnover times, is high in heat conduction speed, and is complete in sintering; and during working, production efficiency is high, the yield is twice or more that of a conventional rotary furnace, and power consumption and nitrogen gas consumption are saved by 60% or more in comparison with those of the conventional rotary furnace.

Description

technical field [0001] The invention relates to the technical field of calcining powder materials, in particular to a method for manufacturing a rotary furnace tube for high-temperature calcining powder materials. Background technique [0002] At present, the diameter of the traditional rotary furnace tube used for dehydration and drying of industrial powder materials and mass production of high-temperature calcination is too large, and the diameter is generally above Ф630mm, which is convenient for the operator to enter the furnace tube to weld the spiral piece or the powder material displacement guide plate. Considering that the human body enters the furnace tube for maintenance during equipment maintenance, the depth of the spiral piece or the powder displacement guide plate is generally very shallow about 100mm, so the allowable powder material charging amount is small, generally only 10% of the furnace tube cross-sectional area ~15%, and it is concentrated at the bottom...

AI Technical Summary

Problems solved by technology

During the movement of the powder material, the powder material stays at the bottom of the furnace tube for a long time and is heated unevenly, the number of times the powder material is turned is small, the heat conduction speed is slow, and the sintering of the powder material is not complete, which is easy to cause the raw material and the clinker to be mixed together; Dehydration drying, high-temperature calcination If the moisture content of the powder material in the front stage is too high, it is easy to form balls and agglomerates, which will affect the dehydration drying and high-temperature calcination in the latter stage; at the same time, the thermal efficiency is low and the power consumption is large. If a nitrogen atmosphere protection is required for burning, the nitrogen consumption is large and the production efficiency is low.

Images