Refractory Materials Used in Coarse Copper Refining Furnace
Coarse copper refining furnace is a metallurgical equipment used for smelting and refining copper. Its purpose is to refine and remove impurities in the copper raw materials, and to obtain dense, less impurities and higher grade copper liquid. The main composition of the furnace is refractory material, so in order to ensure the smelting effect and service life of the coarse copper refining furnace, it is necessary to select good quality refractory materials.
The refractories used in the coarse copper smelting furnace can be divided into two categories: insulation bricks and high-quality forges. The insulation brick used for smelting is mainly made of silica materials with high aluminum content, such as kaolinite, quartz and labradorite, and it is suitable for insulation insulation in the furnace. In the coarse copper refining furnace, fireclay and high alumina bricks are mainly used for forges, which are made of fire clay, bauxite and other raw materials, and are subjected to wet pressing, dry pressing and other processes.
For the selection of refractories used in coarse copper refining furnace, it is required that they have good high temperature mechanical performance and thermal shock resistance, so that they can resist strong temperature changes in the furnace. Secondly, they should have good thermal insulation performance, high compressive strength and strong wear resistance, so that they can correctly support the lining materials. The coarse copper refining furnace temperature is usually above 1200 degrees Celsius, so thermal shock resistant refractories such as magnesia carbon bricks and magnesia chromium bricks should be used for forges, and the temperature of the furnace peak part reaches about 1650 degrees Celsius. It is necessary for the forges to use burned mullite and corundum bricks, and the fire-resistant quality can be improved by adding some trace elements.
In addition, due to the high temperature of the coarse copper melting furnace, the lining materials are easy to wear and corrode. In order to increase the service life of the lining materials, the use of chrome corundum magnesia wear-resistant refractory castables and the masonry of ceramic fiber along the furnace wall can extend the service life of the lining materials.
Therefore, the selection of refractory materials used in the coarse copper smelting furnace should be based on the actual situation of the furnace, including the shape and parameters of the furnace, and the requirements of the process and the materials used. In order to ensure the stability of the operation of the coarse copper refining furnace and the supply of product quality, the choice of refractories plays a very important role.
