Slit-type breathable brick core

Category: Slit Breathable Brick Core

Slit-oriented air-permeable bricks Slit-oriented air-permeable bricks are commonly used structural forms of air-permeable bricks. According to the on-site use conditions, including refined steel type, refining process, ladle capacity, temperature, steel hydrostatic pressure, etc., a reasonable design of slits can make The blow-through effect of the air-permeable brick is achieved, the life span in use is increased, and the safety performance is stable. When compared with the performance of external air-permeable bricks, the air permeability and service life of the bricks are better than those of foreign advanced products, which meets the requirements of performance indicators for ladle refining production.

Performance:

1. Tsayayyar slag

Domin inganta juriya na kayan da juriya na shigar azurfa, Cr2O3 ko wani ɓangare na chromium corundum galibi ana ƙara shi zuwa corundum spinel air-permeable tubalin. Cr2O3 da a-Al2O3 suna da tsari iri ɗaya. Cr2O3 ba wai kawai yana inganta juriya na kayan ba, har ma yana haɓaka kushin rigar tsakanin kayan da narkakken ƙarfe, kuma yana haɓaka ƙulli na pores na tubalin da ke numfashi saboda shigar azurfa.

Amfani da Cr2O3 foda mai kyau da Al2O3 a babban zafin jiki don samar da ingantaccen aluminium-chromium da madaidaicin gilashi mai ɗauke da chromium, lokacin ruwan da aka kafa lokacin da ya sadu da slag a cikin narkakken tsarin narkar da ƙarfe yana da madaidaicin danko, ta haka hana tsinken da ke cikin narkakken ƙarfe ya shafi gurɓataccen tubalin Ruwa; A lokaci guda, zai iya shan oxide na baƙin ƙarfe da magnesium oxide a cikin slag, kuma ya samar da spinel mai yawa a cikin aikin aiki na bulo mai iska, wanda ke inganta juriya na bulo na iska.

Koyaya, bayan ƙara Cr2O3 zuwa kayan, bayan harbe-harbe ko amfani mai zafi, Cr3+ yana oxide zuwa Cr6+, wanda yake mai guba kuma yana gurɓata muhalli. Don haka, don kiyaye makamashi da kare muhalli, yakamata a guji amfani da Cr2O3 gwargwadon iko, kuma ta maye gurbin albarkatun ƙasa, babban aikin zafin jiki ba tare da ƙara Cr2O3 na iya kaiwa matakin ƙara Cr2O3 ba.

2. resistancearfin bugun zafi

Babban hanyar lalacewar tubalin da ke ratsa iska shine lalacewar girgizar ƙasa. Tare da ci gaba da haɓaka yawan zafin jiki na taɓawa, akwai babban bambancin zafin jiki tsakanin aiki da aiki na lokaci -lokaci akan farfajiyar aikin bulo mai iska, wanda ke buƙatar kayan don samun juriya mai ƙarfi na zafi. An gabatar da lokacin spinel a cikin abin da za a iya jefa, kuma za a inganta juriya na girgizar da bulo mai ratsa iska.

The oxide or non-oxide added in the ventilated brick forms a solid solution phase with the aggregate at high temperature, increases the high-temperature strength of the brick, improves the permeability of the brick, and resists the erosion of the ventilated brick by the molten slag in the ladle. After the high temperature heat treatment of the air-permeable brick, its performance is improved to meet its use requirements

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