Do You Know This Knowledge About Refractories For Glass Furnace

Providing optimal operating conditions of glass furnaces during their whole campaign determines the reduction of engery and labour costs and also an increase of melting output.

 

The primary role to solve these problems is given to the development and implementation of new improved performance refracrtory materials.The composition,peroperties and state of the melting furnace refractories which contact with operation environments(arch,walls,siege block etc)are very important in providing the high quality of the glass products.Along with refractories disposed in the melting zone, above mentioned products with complex configuration,which are part of the working end,also have a great influence on the quality of the glass.That is why they must also meet the high requirements in the performance characteristics ,shape and sizes.

The most important of these requirements is a significant corrosion resistance to the glass melt,called glass attack resistance, characterized by the dissolution rate of the refractory in the glass melt,it depends on many factors including the chemical and mineral composition,structral characteristics of the refractory,the chemical composition and viscosity of the glass melt,its value of surface tension at the interface with the refractory lining etc.

 

During their service the refractory parts are not only subjected to the intensive influence of the glass melt.but also significant thermal and mechanical stress,resulting in the increase of requirements to heat resistance and strength.In addition, the refractories ,used in the glass meling, should provide the constantly given parameters of the glass melt and its temperature homogeneity.When refractories interact with the glass melt the contact layer forms, and it is characterized by significantly higher viscosity in comparison with the produced glass melt one.Under real conditions the glass melt in the glass furnaces is constant motion,washing off the products of th glass melt reaction with the refractory.