Corundum Castable

Corundum Castable Introduction

The refractory castable is prepared with corundum as aggregate and powder plus some binder. Corundum castable manufacturing has higher mechanical strength and abrasion resistance than high alumina refractory castable and mullite refractory castable. It is mainly used as lining material of boiler, blast furnace hot air furnace, heating furnace, ceramic kiln and so on.

Corundum castable is a refractory castable with more than 85% alumina content. It is mainly high grade bauxite clinker or fused brown corundum as aggregate. Then add refractory powder, pure calcium aluminate cement binder, silica powder and admixture made of high quality refractory castable. Corundum castable manufacturing is usually constructed by casting method, which can be cast as integral lining or assembled on site as precast blocks.

 

Corundum castable manufacturing
Corundum castable manufacturing

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    Packaging Of Products

    Zhengzhou Rongsheng Kiln Refractory Co.,Ltd. corundum castable produced is packaged in 25kg/ bag (or 50kg/ bag). In order to facilitate loading, unloading and transportation, the goods are delivered to all parts of the country in tons.

    Corundum Castable Physicochemical Indexes

    Corundum Castable

    RS-18S(GJ-18S) RS-80MC RS-70MC

    Chemical composition(%)≥

    Al2O3 + SiO 90 80

    70

    Bulk density dried(kg/cm3)≥

    110℃ x 24h 3000 2900

    2750

    Cold crushing strength(MPa)≥

    110℃ x 24h 150 100 100

    1100℃ x 3h

    160 120

    110

    1500℃x 3h 160 120

    110

    Cold modules of rupture(MPa)≥

    110℃ x 24h 15 12 10

    1100℃ x 3h

    20 14

    12

    1500℃x 3h 20 14

    12

    Permanent linear change

    1100℃ x 3h 0.3 0.3 0.3
    1500℃x 3h 0.5 0.5

    0.5

    Maximum service temp(℃)

    1750

    1600

    1600

    Water addition(%)

    4.5-5.0

    4.5-5.0

    4.5-5.0

    Application Outlet, burner Outlet, burner

    Outlet, burner

    Corundum Castable Feature

    1. High compressive strength, high stability of high-temperature liner;
    2. Large volume density, with strong resistance to slag erosion and permeability;
    3. Strong resistance to solid particles, dust and high-temperature gas erosion;
    4. Low resistance to mechanical wear;
    5. This series of refractory castables are not affected by reducing gases such as H2and CO.

     

    Corundum castable
    Corundum castable

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      Corundum Castable Application

      Corundum castable manufacturing is mainly used for lining materials of various high temperature kilns and high temperature structures. For example, impregnated tube lining of molten steel vacuum degassers, metallurgical spray gun lining, triangular area lining of electric furnace top, LF furnace cover, high-temperature wear-resistant lining of petrochemical industrial catalytic cracking reactor, circulating fluidized bed and high-temperature wear-resistant lining of power plant boiler.

      Zhengzhou Rongsheng Kiln Refractory Co.,Ltd main products are all kinds of refractory castable, which are widely used in building materials, metallurgy, nonferrous metals, chemical industry, electric power and other industries. The refractory product sells well at home and abroad, receives the customer the widespread high praise, if has the need, invites the consultation!

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