The shortcomings of common magnesia chrome brick used in cement kiln have been analyzed.

To increase recovery of high carbon ferrochrome, the effecting factors of chrome contents in slags were analysed, and the preliminary test of adding waste magnesia brick and magnesite were conducted.

And the test shows that the using condition of modified zirconium spinel brick is more bad than direct-bonded magnesia brick but as for chrome periclase-spinel compound brick (LYC) it is better.