Forsterite Bursting in Magnesia Chromite Bricks : Two Case Studies from Lead and Copper Smelting Furnaces

Title data

Gregurek, Dean ; Majcenovic, Christian ; Spanring, Alfred ; Kirschen, Marcus:
Forsterite Bursting in Magnesia Chromite Bricks : Two Case Studies from Lead and Copper Smelting Furnaces.
In: RHI Bulletin. (2011) Issue 1 . - pp. 49-53.

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Abstract in another language

During most nonferrous metallurgical processes a common wear mechanism of magnesia chromite bricks results from the chemothermal load caused by iron silicate (fayalithic) slag [1,2]. However, an atypical, exceptionally high SiO2 supply caused by changes in the processing and/or the uncontrolled addition of silica sand results in the considerable formation of forsterite (Mg2SiO4) following contact with periclase, which due to the associated volume expansion causes forsterite bursting and deterioration of the brick structure. Two postmortem studies of magnesia chromite bricks taken from a copper and lead furnace are presented providing detailed chemical and mineralogical examples of this wear phenomenon, which whilst seldom experienced in nonferrous applications is quite typical for regenerator chambers in the glass industry in the case of extreme SiO2 carryover.

Further data

Item Type:	Article in a journal
Refereed:	Yes
Institutions of the University:	Faculties > Faculty of Engineering Science Research Institutions > Affiliated Institutes > Fraunhofer Center for High Temperature Materials and Design (HTL) Faculties Research Institutions Research Institutions > Affiliated Institutes
Result of work at the UBT:	No
DDC Subjects:	600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited:	17 Jun 2019 12:13
Last Modified:	17 Jun 2019 12:13
URI:	https://eref.uni-bayreuth.de/id/eprint/49584