What are the measures to improve the life of brick nozzles?

   ① The structural design must be conducive to the simultaneous blowing of multiple air sources to keep the nozzles unobstructed.

   ②Bricks should be made of high-quality magnesia-carbon refractories or magnesia dolomite refractories that are resistant to temperature shocks and spalling, and the limit particle size and binder content of the ingredients should be appropriate.

   ③The metal pipe skeleton in the component must be welded without defects, cracks and air leakage. After the metal pipe skeleton is welded, a pressure test should be carried out to check for leaks. After confirming that all metal pipes have no air leakage, the next step can be carried out. The forming process.

   ④ When forming, pay attention to the uniformity of the fabric, and the tightness is basically the same everywhere. After the pressure treatment, the next step can be carried out only after confirming that the pressure is maintained successfully.

   ⑤ The assembly of air supply components must be strictly and meticulously to achieve stable air supply and adjustable air volume. The pressure test must be carried out after the gas chamber welding.

   ⑥ The arrangement of the components at the bottom of the furnace should be reasonable, and comprehensive masonry should be carried out, such as keeping the component bricks and the protection bricks vertical, and the gaps are close to each other.

   ⑦In use, the amount of bottom gas should be controlled, and operations such as slagging operation and thermal maintenance should keep the outlet of the gas supply element forming a mushroom head to control the life of the element. It is necessary to shorten the time from stopping blowing to tapping as much as possible, which has a great influence on the melting loss of components; when the time from stopping blowing to tapping is too long, the furnace should be tilted so that the tuyere is exposed to the liquid level, and the temperature of stopping blowing should not be too high, and Minimize re-blowing as much as possible.

   ⑧ Adopt slag replenishment technology, according to the condition of the component outlet and furnace bottom, the allowable slag replenishment time and the slag condition in the furnace to determine the amount of slag remaining, the consistency of the slag and the slag replenishment method. When the slag is too thin, add an appropriate amount of dolomite to make up the whole slag, or partially leave the slag to make up. The slag can be made up by shaking the slag back and forth, or the furnace body can be sprayed vertically. The slag making operation must be done carefully.

   ⑨ Observe and measure in time to understand the erosion of various parts of the furnace lining, and timely gunning, especially adhere to the measurement of the erosion depth of the furnace bottom, and timely make up the furnace bottom, and make up for the furnace bottom frequently and thinly, and ensure that the sintering is sufficient.

   ⑩ Appropriate bottom gas flow rate should be adopted when opening a new furnace to ensure that the gas supply components and furnace bottom are in good standby condition.

   ⑪ The method of introducing oxygen or air in a timely and quantitative manner is adopted to improve the patency of the air supply element and prevent the occurrence of local blockage.

   ⑫ The gas supply element should be purged at the end of tapping of each furnace.