Construction method of kiln head and kiln tail lining refractory materials of rotary kiln

Abstract

The invention relates to a construction method of kiln head and kiln tail lining refractory materials of a rotary kiln. The method comprises the following steps that (1) stainless steel anchoring parts are welded at equal intervals in a kiln head steel cylinder and a kiln tail steel cylinder of the rotary kiln, and an annular stainless steel wire mesh is welded on the stainless steel anchoring parts; (2) a steel formwork is erected, the refractory materials are firstly poured into the lower semicircle of the kiln head and the semicircle of the kiln tail poured by 180 degrees, so that 1 / 2 circle of castable masonry is completed, and castable masonry is cultured; (3) the rotary kiln is rotated by 90 degrees, a steel formwork is erected so as to pour 1 / 4 circle of the refractory castable, andcastable masonry is cultured; (4) then the rotary kiln is rotated by 90 degrees, a steel formwork is erected so as to pour the rest 1 / 4 circle of the refractory castable, and castable masonry is cultured; and (5) the refractory castable of the kiln head and the kiln tail is poured, and an expansion joint is not reserved among the three-section construction. According to the construction method, the technical problems that the kiln head part and the kiln tail part of the rotary kiln are prone to collapse and brick falling in the production process of building refractory bricks are solved.

Description

Technical field: [0001] The invention relates to a construction method for lining a refractory material at the kiln head and kiln tail of a rotary kiln, and belongs to the field of masonry construction of the kiln head of a rotary kiln. Background technique: [0002] The rotary kiln is the key equipment in the magnetic materials and building materials industry. According to the requirements of GB50211-2014 "Code for Construction and Acceptance of Industrial Furnace Masonry Engineering" and GB50309-2007 "Code for Quality Acceptance of Industrial Furnace Masonry Engineering", the refractory materials lining the rotary kiln are all The brick-laying method of the inner ring is adopted, including the kiln head and the kiln tail of the rotary kiln. Generally, the bricks of the kiln head and the kiln tail ring are built with double-layer wedge-shaped refractory bricks. [0003] The refractory bricks at the kiln head and kiln tail of the rotary kiln are standard wedge-shaped refract...

AI Technical Summary

Problems solved by technology

The kiln head and kiln tail of the rotary kiln are constructed with traditional bricks. From the perspective of production and use effects, since the kiln head and tail of the rotary kiln are the import and export parts of the sintered materials, the material has a high impact on the refractory bricks at the kiln head and kiln tail. Friction, impact, and the stress of the refractory bricks at the kiln head and kiln tail are relatively concentrated due to the influence of internal and external temperatures. In addition, the wedge-shaped refractory bricks in the inner layer lack the support of the front and rear refractory bricks. " and "cracking, peeling, and broken bricks", and because the rotary kiln is constantly rotating, and then gradually develops into the phenomenon of "looseness and collapse" of the refractory bricks at the kiln head and kiln tail, production cannot be carried out, and the kiln is forced to stop Repair and Overhaul

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