A deformation prevention device for a smelting furnace hearth and a method of using the same

By introducing expansion gaps and adaptive cooling adjustment into the hearth assembly of the smelting furnace, the deformation problem caused by the expansion of the refractory lining in the hearth of the smelting furnace was solved, thereby improving the stability and safety of the hearth.

CN122305794APending Publication Date: 2026-06-30FUYANG SHENNENG SOLID WASTE ENVIRONMENTAL REGENERATION CO LT
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FUYANG SHENNENG SOLID WASTE ENVIRONMENTAL REGENERATION CO LT
Filing Date
2026-04-22
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

The existing smelting furnace hearth is prone to deformation due to local expansion of the refractory lining under high temperature conditions, and existing anti-deformation measures cannot effectively solve this problem.

Method used

The furnace hearth assembly design includes a furnace bottom base, a composite load-bearing layer at the furnace bottom, a cylindrical working layer on the side wall, an elastic buffer tube, and a cooling adjustment assembly. Through adaptive adjustment of the expansion gap, the elastic buffer ring, and the coolant flow path, it absorbs thermal expansion displacement and preferentially cools local high-temperature areas.

Benefits of technology

It effectively prevents the furnace hearth shell from twisting and deforming, ensuring the structural stability and service life of the smelting furnace, and achieving passive adaptive temperature balance control, avoiding deformation and damage caused by local high temperature.

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Abstract

This invention relates to the field of solid waste environmental recycling equipment technology, specifically to a furnace hearth anti-deformation device and its usage method, comprising: a furnace hearth assembly, which, from bottom to top, includes a furnace bottom base, a furnace bottom composite load-bearing layer, and a sidewall cylindrical working layer. An elastic buffer tube is movably mounted on the surface of the sidewall cylindrical working layer, and multiple intermediate cooling pipes and elastic buffer rings are respectively mounted on the surface of the elastic buffer tubes. This invention uses the expansion gap between the sidewall cylindrical working layer and the elastic buffer tubes to absorb the large thermal expansion displacement of the sidewall cylindrical working layer during the initial heating stage. The elastic buffer rings divide the furnace hearth shell into three parts, providing axial expansion space. Simultaneously, by changing the flow path of the coolant in the intermediate cooling pipes, priority cooling is achieved at localized areas of the sidewall cylindrical working layer, preventing localized high temperatures in the sidewall cylindrical working layer from causing furnace hearth shell distortion and deformation.
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