What causes damage to the ladle breathable brick?

In the process of using ladle air-permeable bricks in steel factories, the main reasons for the damage of air-permeable bricks are thermal stress, mechanical stress, mechanical abrasion, and chemical erosion.

Setene se kenang moeeng se na le likarolo tse peli: sekoti sa moea se kenang moeeng le setene sa moea se kenang moeeng. Ha khase e fokang ka tlase e buletsoe, bokaholimo bo sebetsang ba konopo e kenang moeeng bo tla ikopanya ka kotloloho le tšepe e qhibilihisitsoeng e nang le mocheso o phahameng. Ha palo ea makhetlo a ts’ebeliso e eketseha, ka lebaka la mocheso le serame se potlakileng, ho senyeha hoa mokokotlo oa setene sa moea ho tla teba, mme ho bonolo ho hlahisa mapetso.

Sebaka se sebetsang sa litene tse kenang moeeng se ka tlase se kopane ka kotloloho le tšepe e qhibilihisitsoeng e nang le mocheso o phahameng, ‘me mocheso oa sebaka se sa sebetseng o batla o le tlase. Bophahamo ba litene tse kenang moeeng le thepa e haufinyane e haelloang e fetoha ka lebaka la liphetoho tsa mocheso nakong ea ts’ebetsong ea ho kopanya tšepe, ho e tšela le ho e lokisa. Phetoho ea molumo, ka lebaka la boteng ba mocheso oa mocheso le phapang pakeng tsa mocheso oa mocheso pakeng tsa lera la metamorphic le lera la mantlha, boemo ba phetoho ea bophahamo ba modumo ho tloha holim’a sebaka se sebetsang sa setene se kenang moeeng ho ea sebakeng se sa sebetseng butle-butle se fetoha, e tla baka ho kuta litene tse fehlang moea. Matla a ho kuta a baka hore setene se kenang moeeng se be le mapetso ka lehlakoreng le leng, ‘me maemong a boima, setene se kenang se kenella ka lehlakoreng le leng.

During the tapping process, the molten steel will have a high-strength scouring of the bottom of the ladle, which will accelerate the erosion of the air-permeable brick. When the upper surface of the breathable brick is higher than the bottom of the bag, it will be sheared and washed by the flow of molten steel. The part higher than the bottom of the bag will generally be washed away after one use. In addition, after refining, if the valve is quickly closed, the reverse impact of molten steel will also accelerate the corrosion of the ventilating brick.

Sebaka se sebetsang sa setsi sa litene se kenang moeeng se kopana le tšepe ea tšepe le tšepe e qhibilihisitsoeng nako e telele. Tšepe slag le tšepe e entsoeng ka ho qhibilihisoa li na le oxide ea tšepe, ferrous oxide, manganese oxide, magnesium oxide, silicon oxide, jj. lintho tse qhibilihang (joalo ka FeO · Al2O3, 2 (MnO) · SiO2 · Al2O3, jj.) ebe li hoholehile.