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    Magnesia Refractory Chrome Blocks

     
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    Description

     Magnesia-chrome bricks are refractory products containing magnesium oxide (MgO) and chromium oxide (Cr2O3) as the main components, and periclase and spinel are the main mineral components. This type of brick has high refractoriness, high temperature strength, strong resistance to alkaline slag, excellent thermal stability, and certain adaptability to acidic slag. The main raw materials are sintered magnesia and chromite. The purity of the magnesia raw material should be as high as possible. The requirements for the chemical composition of the chromite ore are: Cr2O3: 30-45%, CaO: ≤ 1.0-1.5%.
        Magnesia-chrome bricks are mainly used in metallurgical industries, such as the construction of open hearth furnace roofs, electric furnace tops, furnace refining furnaces, and various non-ferrous metal smelting furnaces. The high temperature part of the ultra high power electric furnace wall is made of fused cast magnesia chrome brick. The high erosive area of ??the refining furnace outside the furnace is made of magnesia chrome brick made of synthetic material. The high erosive area of ??nonferrous metal flash smelting furnace is made by melting cast magnesia chrome brick and synthetic material. Magnesia chrome bricks. In addition, magnesia-chrome bricks are also used in cement rotary kiln firing zones and glass kiln regenerators.

     The production process of firing magnesia-chrome bricks is similar to that of magnesia bricks. In the firing process, due to the loosening effect caused by the expansion of MgO and Cr2O3, Al2O3 or directly combined with magnesia chrome bricks directly combined with the oxidation of magnesia chrome brick iron to form spinel, it can also be made of synthetic co-sintered material. Magnesia chrome brick. In addition, there are non-burned magnesia-chrome bricks, non-burned magnesia-chrome bricks have simple production process, low cost and good thermal stability, but the high-temperature strength is far less than that of fired bricks. The brick is characterized by pure raw materials, high firing temperature, direct combination of high temperature phases such as periclite and spinel, and low-melting phase such as silicate is island-like distribution, thus significantly increasing the high temperature of the brick. Strength and slag resistance.

    Specification
    Magnesia Refractory Chrome Blocks for cement rotary kiln firing zones and glass kiln regenerators


     

     
    Item
                      Behaviors
    Magnesia Chrome Bricks
    TY-AMC-40 TY-AMC-20 TY-AMC-12 TY-AMC-8
    Chemical
    Composition
     
    MgO % 35 60 70 70
    SiO2 % 1.0 1.0 2.0 2.0
    Cr2O3 % 40 20 12 8
    Apparent Porosity % 16 16 18 18
    Cold Crushing Strength Mpa 40 40 40 40
    0.2Mpa Refractoriness Under Load T0.6 1700 1700 1650 1650
    Bulk Density g/cm3 3.3 3.15 3.05 3.0

     

     

     
    Item
                      Behaviors
    Magnesia Chrome Bricks
    TY-DMC-20 TY-DMC-18 TY-DMC-12 TY-DMC-8
    Chemical
    Composition
     
    MgO % 55 60 65 80
    SiO2 % 2.5 2.4 1.5 1.5
    Cr2O3 % 20 18 18 18
    Apparent Porosity % 18 18 18 18
    Cold Crushing Strength Mpa 40 40 40 40
    0.2Mpa Refractoriness Under Load T0.6 1700 1700 1680 1650
    Bulk Density g/cm3 3.15 3.1 2.98 2.95

     

    Magnesia-chrome bricks are widely used in industrial and construction industries because of their high heat resistance and pressure resistance. There are also several different types of magnesia-chrome bricks. According to the requirements of different products, there are three main types of magnesia-chrome bricks. Kind:
    1. Burning magnesia chrome brick:
     
    The calcined magnesia chrome brick is made of high-quality magnesia and chrome ore fine ingredients. The content of Cr2O3 is adjusted according to different needs. The product has good thermal stability and high temperature performance, and is widely used in cement kiln and non-ferrous metallurgical furnace.
     
    2. Directly combine magnesia chrome bricks:
     
    Directly combined with magnesia chrome bricks, chrome ore with high impurity content and high-quality high-purity magnesia are used as raw materials, and are subjected to high-pressure molding and fired at a high temperature of 1 700 ° C or higher. High temperature performance and strong resistance to slag erosion. Resistant to cement clinker erosion. Widely used in non-ferrous metallurgical furnaces and cement rotary kiln.
     
    3. Semi-recombined magnesia chrome brick and recombined magnesia chrome brick
     
    Semi-recombined magnesia chrome brick and recombined magnesia chrome brick, using some or all of electric fused sand (electrofusion synthetic sand) as raw materials, fine batching, high pressure forming, ultra-high temperature calcination, good particle bonding degree, high product strength and stable volume Good in properties, widely used in RH, VOD, AOD and other off-site refining equipment, non-ferrous metallurgical furnaces.

     

     


     

    Application
    Magnesia Refractory Chrome Blocks for cement rotary kiln firing zones and glass kiln regenerators
    Properties : The chemical properties of magnesia chrome bricks are alkaline. Compared with magnesia bricks and chrome bricks, the thermal shock resistance is good, the volume is stable at high temperature, and the load softening temperature is high.

     

    Application field

    Magnesia-chrome bricks are mainly used in metallurgical industries, such as the construction of open hearth furnace roofs, electric furnace tops, furnace refining furnaces, and various non-ferrous metal smelting furnaces. The high temperature part of the ultra high power electric furnace wall is made of fused cast magnesia chrome brick. The high erosive area of ??the refining furnace outside the furnace is made of magnesia chrome brick made of synthetic material. The high erosive area of ??nonferrous metal flash smelting furnace is made by melting cast magnesia chrome brick and synthetic material. Magnesia chrome bricks. In addition, magnesia-chrome bricks are also used in cement rotary kiln firing zones and glass kiln regenerators.

     

    Production Equipment

    Production capacity: Our factory actively response to government environmental protection policy, we designed and built the fully automatic controlled high temperature gas tunnel kiln (1700℃), and got capacity of annual output 70,000 tons of high quality refractory products.

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    Packing Details
    Packing details:

    ★Bricks: Fumigated wooden pallet with log paperboard covered and stainless steel band strapping, the whole outside is wrapped with thermoplastic film. Or carton packaging.

    ★Wooden pallet size: usually 92*92cm (standard brick)

    ★Castable: Ton bag with rain film and 25kg bags inside

    ★Or according to customer’s requirements

    PackingPackingPackingPacking
    Transportation

    ★Port of dispatch: Tianjin port; Qingdao port

    ★Delivery time: According to customer’s demand or two sides negotiate

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    Our Services

    We provide you 

    ★Timely response: Timely response to your inquiry within 24 hours and provide solution. 

    ★Competitive Price: Make the products competitive in your market. 

    ★Free sample: Free sample are offered, trial order are accepted for quality evaluation. 

    ★Strict quality control: We set Quality Management System, from the raw material to finished products, produce high quality products according to chemical & physical specifications strictly to satisfy customers’ needs.

    ★Fast delivery time: Within 3-30 days according to your quantity after receiving your advance payment. 

    ★ Professional services: Provide pictures from order to delivery. Inspect report by our country’s designated authority and oversea services if necessary.

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    Certification:  (ISO 9001:2015)

    JUNDAO (HENAN) NEW MATERIALS CO.,LTD.

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    亚洲五月六月丁香缴情
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