Fused cast refractory materials are divided into two categories: Fused cast refractory products and sintered electrofusion products.

Fused cast refractory products refer to products that are cast into a certain shape by melting the batches at high temperatures by the melting method. There are two melting methods of batch materials, the electrofusion method, and the aluminothermic method. The former melts the batch in a single-phase or three-phase electric arc furnace or resistance furnace; the latter uses the heat released by the aluminothermic reaction to melt the batch. Electrofusion is the main method for producing Fund cast and cast refractory materials. 

Editing of the technological process of Fused cast refractory materials.

The process of melting and casting refractory materials can be roughly divided into the following main processes:

(1) Preparation and processing of raw materials;

(2) Precise batching and mixing;

(3) melting;

(4) Casting of Fused cast material;

(5) Heat treatment of ingots;

(6) Machining of ingots.

The smelting process is essentially a reduction smelting process, the purpose is to obtain a complete and coarse crystal and a dense structure, and at the same time, through reduction, the impurity components such as iron oxide, silicon dioxide, and titanium dioxide are removed to improve the quality of the product. 

Types of Fused cast refractoriesEdit Broadcast

There are many types of Fused cast and cast refractory materials, the most widely used are Fused cast mullite bricks, Fused cast zirconium stone bricks, Fused cast jade bricks, and zirconium corundum bricks, and quartz, magnesia, sharp stone, and magnesia Fused cast products such as olivine. Among these products, except for the quartz which is glassy, the crystal structure of other products is well developed. Compared with sintered products, Fused cast and cast products have the following characteristics:

(1) In most cases, the product is very dense, with few pores and large volume;

(2) High mechanical strength (several times larger than sintered products);

(3) High-temperature structural strength;

(4) High heat-seeking and good slag resistance.

Alumino-silica cast products are mainly used in the melting pool of glass melting furnaces, especially in the places where the erosion and erosion are the most serious such as the upper pool wall and the vicinity of the Jiake mouth, the service life of the furnace lining is greatly improved (compared to the use of clay products). 2~2.5 times higher). At the same time, it can also strengthen the operation of the melting furnace, increase the melting temperature, and correspondingly improve the glass output and quality of the unit area of the furnace.

In the metallurgical industry, Fused cast casting products are rarely used directly, but Fused cast casting blocks are used as raw materials, and Fused cast products are manufactured by sintering methods, such as Fused cast corundum products, Fused cast magnesia bricks, and Fused cast silica products. The effect of the use of these products is remarkable, therefore, their scope of use is constantly expanding.