Main kiln pipe of rotary kiln

Abstract

The invention discloses a main kiln pipe of a rotary kiln. A kiln pipe is lengthened, the temperatures of a first heating group and the last heating group can be increased in consideration of thermal conduction of stainless steel under the condition that the heating groups are not added; by virtue of the heat conduction principle, the front end of the first heating group and the rear end of the last heating group are increasingly and slowly heated, so that temperature increment and temperature reduction speeds can be reduced, simultaneously time at maximum temperature is guaranteed, a broken phenomenon of a rolling material is prevented, and uniform pre-sintering is facilitated; and besides, striking devices are added in a plurality of positions, so that the phenomenon that powder sticks to the wall is greatly changed, the pre-sintering effect is guaranteed, and the difficulty of wall cleaning is reduced.

Description

technical field [0001] The invention relates to the technical field of a rotary kiln, in particular to a main kiln tube of a rotary kiln. Background technique [0002] Rotary kiln refers to rotary calcining kiln (commonly known as rotary kiln), which belongs to the category of building materials equipment. The rotary kiln consists of three parts: the kiln head, the main kiln pipe and the kiln tail. Among them, the kiln head is the discharge part of the rotary kiln, the diameter is larger than the diameter of the rotary kiln, and the seal is realized by stainless steel fish scales and the kiln body; The main body is cylindrical, with 3 to 5 rolling rings in the middle; the shape of the kiln tail at the feeding end is similar to the cover of a rotary kiln, mainly responsible for feeding and sealing. [0003] The main kiln tube (made of stainless steel) of the rotary kiln used in the prior art is as figure 1 As shown, the outside of the kiln tube 11 is covered with an insulat...

AI Technical Summary

Problems solved by technology

Due to the short kiln tube, it is difficult to adjust the temperature curve, the heating speed is too fast, the holding time is short, and the speed of dropping to 700°C is too fast, resulting in the pre-firing, the rolled sheet material is easily broken, and the uniformity of the pre-fired material is difficult to control, etc. ;Because there is only one beater, the powder sticking to the wall of the pipe is serious, and it is difficult to clean up, which will have a great adverse effect on the quality of pre-firing, which needs to be improved urgently

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