- Time:Jul 05, 2023
When designing the refractory brick scheme for electric furnace, it is necessary to consider factors such as the working temperature, structural characteristics and use requirements of the electric furnace. The following is a detailed introduction to the design of refractory bricks for general electric furnaces:
1. Working temperature: first determine the working temperature range of the electric furnace, usually the working temperature of the electric furnace is relatively high. Choose the appropriate refractory brick material according to the working temperature. Common types of refractory bricks include high alumina refractory bricks, silicate refractory bricks, silicon carbide refractory bricks, etc.
2. Structural features: The structural features of the electric furnace include the furnace shell, furnace bottom, furnace and furnace roof. According to the functions and stress conditions of different parts, determine the corresponding refractory brick materials and masonry methods. For example, the bottom of the furnace is usually made of high-strength, wear-resistant refractory materials, while the hearth and roof need to have better heat resistance and corrosion resistance.
3. Masonry layout: formulate a masonry layout plan, including the thickness of the brick wall, the way of brick arrangement, the width of brick joints, etc. According to the structural size and stress of the electric furnace, determine the reasonable thickness of the brick wall and the buckling method between bricks.
4. Masonry method: choose the appropriate masonry method, such as dry masonry, wet masonry or vibrating masonry. Determine the most suitable masonry method according to the specific situation to ensure the quality of the refractory bricks.
5. Clay proportioning and construction process: prepare the special clay for refractory bricks, and carry out the proportioning of the clay according to the requirements. According to the location and requirements of the masonry, select the appropriate type of cement and admixture. During the masonry process, the slurry-water ratio of the cement, the masonry process and the quality of the masonry are strictly controlled to ensure the firmness and stability of the brick wall.
6. Curing and drying: After the masonry is completed, it should be cured and dried to avoid cracking of the brick wall due to temperature changes. Slow heating and cooling are usually carried out, so that the refractory bricks gradually adapt to the working temperature.
7. Quality inspection and maintenance: After the masonry is completed, quality inspection is carried out to ensure the integrity and quality of the refractory bricks. Regularly maintain and repair the refractory bricks inside the electric furnace, and replace any damaged or falling bricks in time.
The design of refractory bricks for electric furnace needs to comprehensively consider multiple factors such as material characteristics, working temperature, structural characteristics and use requirements. Reasonable scheme design can ensure the stable operation of the electric furnace and prolong the service life. It is best to consult a professional refractory supplier or engineer before designing a plan for specific advice and guidance.
