Semidry method hot gunning repair device and method of rotary kiln lining refractory material

Abstract

The invention discloses a semidry method hot gunning repair device and method of a rotary kiln lining refractory material, and belongs to a rotary kiln lining refractory material repair technology. The repair device comprises a gunning machine, the gunning machine is communicated with a high pressure air source through a compressed air pipe, the gunning machine is further communicated with a spray gun through a first high pressure pipeline, the spray gun is further communicated with a water tank through a second high pressure pipeline, a self-priming pump is installed between the water tank and the second high pressure pipeline, and is used for outputting a gunning refractory from the gunning machine through the first high pressure pipeline by utilizing high pressure air, then outputting a silica sol solution from the water tank through the second high pressure pipeline by utilizing the self-priming pump, mixing the gunning refractory and the silica sol solution in the spray gun and spraying the gunning refractory and the silica sol solution. By spraying the mixture of a mixed solution of spray gun silica sol solution and water and high alumina mullite to the inner wall of the rotary kiln through the spray gun, filling a perfoliate fracture, thickening the thickness of the refractory material, repairing a castable which sheds locally, and adopting a hot repair technology, the time for slow-down kiln cooling during cold repair is avoided, the repair time is short, and the production of the subsequent process is not influenced.

Description

Technical field [0001] The present invention relates to a technique for repairing a rotary kiln lining refractory material. More specifically, the present invention mainly relates to a semi-dry thermal gunning repairing device and method for the rotary kiln lining refractory material. Background technique [0002] Rotary kiln is an important link in the process of producing ferronickel by RKEF process. Its main function is to increase material temperature, dehydration and pre-reduction. The kiln lining refractory material of the rotary kiln is 10mm aluminum silicate fiber insulation felt + 230mm high aluminum casting material. The service life of the rotary kiln is mainly limited by the use of its kiln lining refractory materials. Due to the long-term use of high temperature and the extremely cold and extreme heat generated when the kiln is shut down for maintenance, the thermal shock resistance of the kiln is affected. The material has been seriously thinned, and the original ...

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Problems solved by technology

[0004] One of the purposes of the present invention is to address the above-mentioned deficiencies, to provide a semi-dry thermal gunning repair device and method for rotary kiln lining refractory materials, in order to solve the long time-consuming repair of rotary kiln lining refractory materials in the prior art , affect the production of the next process, and even cause the entire production line to face technical problems such as shutdown

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