The ventilation bricks for anode furnace produced by Quantong Kiln have reasonable design and long service life, which solves the problems of wettability and permeability of ventilation bricks. It is of great significance to fundamentally solve the heat transfer problem of copper refining anode furnace, improve heat utilization rate and metal direct yield, improve slag discharge conditions, shorten production furnace time and increase output.
1. Dispersion type breathable brickDispersion type breathable brickIt has high porosity and permeability. In actual production, by adding carbon-containing compounds to the mixture, since the material can be burned at low temperature without residue, the initial porosity can be obtained by burning out the intermediate material at low temperature. Dispersion-type air-permeable bricks are distributed with inter-penetrating pores of different sizes. When the air blowing is stopped during use, the steel and slag in the ladle will penetrate into the deep area of the air-permeable brick through these pores, so the working surface will be damaged. Solid and tight parts. When the ladle is stopped or when the air blowing is restarted, the working surface of the breathable brick is subjected to the periodic penetration and erosion of the molten steel, causing the pores to block, blow through or peel off.
2. Straight-through directional breathable brick The air passage of the straight-through directional breathable brick is designed as a straight-through hole or a straight-through slit type. The main ventilation brick structure used in the converter is a through-hole type. Because the through-hole type of breathable brick used for ladle is relatively It is complicated, and the ventilation rate of the ventilation brick is small, so the through-slit type ventilation brick replaces the through-hole type ventilation brick.
3. Slit directional type breathable brick Slit directional type is the most commonly used structural form of breathable brick. According to the site use conditions, including refining steel type, refining process, ladle capacity, temperature, molten steel static pressure, etc. Design reasonable slits , It can make the blowing effect of the breathable brick to achieve the best, the life in use is increased, and the safety performance is stable. When compared with the performance of foreign breathable bricks, the breathability and service life of the brick are better than those of foreign advanced products. Requirements for performance indicators in ladle refining production.
