Heat-resistant integral casting foundation for large-sized industrial kiln and forming method thereof

Abstract

The invention discloses a heat-resisting and integral-casting basis of a large industrial furnace and a forming method thereof, which adopts amorphous cast refractory materials and heat-resisting stainless steel bars which are combined closely to form a supporting body with gap flexibility and dual-intensity, and a heat-resisting stainless steel bar skeleton is coated with asphalt paint with the thickness of between 1 and 2mm or coiled with fiber paper with the thickness of between 1 and 2mm. The forming method adopts the continuous casting after layering, segmentation and partitioning and reserves a dilatation joint, the temperature is no less than 10 DEG C when in construction in winter, and the temperature for heating the agitating water for the casting material is between 15 and 25 DEG C. The forming method has advantages of greatly reduced basic bar arrangement density of a bulky fireproof concrete compared with the general design, reduced diameter of the screw-threaded steel, low cost, safety and reliability, rather strong disaster tolerance, and being capable of bearing the scouring of hundreds of tons to thousands of tons of high temperature metal liquid and continual thermal shattering effect and mechanical vibration load.

Description

technical field The invention relates to a large-scale metallurgical kiln, in particular to a large-scale metallurgical kiln integrally casting an unshaped refractory castable foundation and a forming method thereof. Background technique The structure of the furnace bottom of the large-scale metallurgical industrial furnace is distinguished by the relationship between the furnace bottom and the furnace foundation, that is, it is divided into an overhead furnace bottom and a solid furnace bottom. Taking the continuous operation of the copper smelting reverberatory furnace as an example, the furnace bottom is directly built on the heat-resistant concrete foundation, and the required temperature resistance of the heat-resistant concrete foundation is above 850 °C. A big difference between the refractory concrete and the conventional concrete as the foundation of the kiln is that the steel structure support of the ordinary refractory concrete is a layered mechanical structure, a...

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Problems solved by technology

Therefore, due to poor strength and unstable material structure performance, ordinary refractory concrete cannot be used as load-bearing concrete, and can only be used as refractory isolation lining.

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