Method for repairing mechanical shaft kiln lining

Abstract

The invention discloses a method for repairing a mechanical shaft kiln lining, belonging to the maintenance field of a lime production kiln. The method comprises the following steps: 1. washing a furnace: cleaning a furnace wall with high-pressure water by a high-pressure nozzle driven by a spraying mechanical arm from bottom to top firstly and then from top to bottom; 2. examining for spraying: thoroughly cleaning nodules and residues off from the inner wall of the furnace, cleaning loose floating bricks out of the furnace, digging and repairing seriously collapsing positions in the furnace,installing stainless steel anchorages on a working layer in the furnace, hanging a net, welding a longer anchorage, and hanging a net for spraying; and 3. spraying: integrally spraying the whole lining in a large area and spraying local areas with specific targets to obtain an intact furnace profile. The method has the advantages of short construction period, low cost and good effect.

Description

Technical field [0001] The invention is a repair method for the production of lime kiln, which involves a repair method of mechanized vertical kiln lining. Background technique [0002] The mechanized vertical kiln will cause different degrees of damage in about 4 years, such as the peeling of fire resistance and the fall of fire tiles. It must be discontinued and repaired normally.The repair method of mechanized vertical kiln lining is to remove all the damaged refractory bricks. This method has a long construction period and a large cost. Invention content The invention provides a repair method of mechanized vertical kiln lining with a short construction period and a small cost of construction. The present invention uses a robot automated spray, which is characterized by the following steps: 1. Washing the furnace, even with high pressure water with water pressure ≥40MPa, the flow is 1M 3 / h, clean the furnace wall, clean up from the bottom, then the top to bottom to clean ...

AI Technical Summary

Problems solved by technology

[0002] Mechanized shaft kilns to produce lime and lightly burned dolomite are widely used in my country's metallurgical and building materials industry. Influenced by the chemical reaction of impurities in dolomite, under normal circumstances, the mechanized shaft kiln lining will be damaged to varying degrees in about 4 yea