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        PRODUCTS

        Magnesia Chromite Brick(KROMAG)

        Magnesia Chromite Brick(KROMAG)

        Introduction

              It is one kind of the Marvels top products as well as the traditional advantage. We have many patents for this kind of products. We have been producing them for more than 50 years as the founder of it in China. It has excellent resistance to slag attack, over temperature damage, vacuum attack, oxidation reduction and abrasion. It is widely used in critical parts of metal smelting furnace. Up to now, it is the best choice as working lining of smelter which adopts to different operation situations of vacuum, different slag PH value and strong oxidation. For example, it is used as working ling, and at location such as hot spot, slag, tuyere and flushing of various high-quality refining furnaces (RH or DH degasser, VOD, AOD, and ultra-high-power electric furnace), large non-ferrous smelting furnaces (such as flash furnace, convertor, anode furnace and Caldo furnace).

              After salt impregnation, the physical and chemical properties are enhanced and the performance improves a lot. The apparent porosity will be decreased to about 5.0%, while the bulk density and the cold crushing strength will increase by about 0.05g/cm3 and 30MPa, respectively.

        It is mainly made from fused mag-chrome, magnesia and chrome ore, pressed under high pressure and burnt at ultra-high temperature. Based on different raw material, it is divided into three types: Re-bonded Mag-chromite (FMK), Direct Bonded Mag-chromite (DMK) and Semi-rebonded Mag-chromite (SMK).


        Properties

        (1) Re-bonded Mag-chromite Brick (KROMAG  FMK)


        Name

        Rebond Mag-Chromite Bricks

        Raw materials

        Fused magnesia chromite

        Properties

        Excellent resistance to slag attack, over temperature damage, vacuum attack, oxidation reduction and abrasion

        Application

        RH or DH degasser, VOD, AOD, and ultra-high-power electric furnaces



        (2) Direct Bonded Mag-chromite Brick (KROMAG DMK)


        Name

        Direct-Bonded Mag-Chromite Bricks

        Raw materials

        High purity magnesia and chrome

        Properties

        Excellent thermal shock resistance, oxidation resistance, abrasion resistance, slag erosion & resistance to vacuum damage

        Application

        RH or DH degasser, VOD, AOD,non-working layer, permanent lining


        (3) Semi Rebonded Mag-chromite Brick (KROMAG SMK)


        Name

        Semi-Rebonded Mag-Chromite Bricks

        Raw materials

        Fused magnesia chrome, magnesia and chromite

        Properties

        Bricks exhibit better thermal shock resistance than re-bonded mag-chromite bricks and better corrosion resistance than direct-bonded mag-chromite bricks

        Application

        Non- ferrous smelting furnaces  furnace mouth area, hot spot, slag line and flushing area

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