Production process

How is brown castable refractory produced?

SIJIHUO REFRACTORY begun unshaped refractory producing since 1999, adopting three-dimensional production line, with huge operating space for advantaged facilities and high -degree-automatized machines, to make sure producing stable and high quality refractory materials.

Unshaped Refractories are made of raw material mixture with refractory aggregates, fine powder, and bindings, and other special additives. It’s adopted installation way of casting, vibrating, or it can also be customized and precasted as per customers’ drawings, for various of constructing industrial furnaces’ linings.

Unshaped Refractory
Unshaped Refractory Unshaped Refractory Unshaped Refractory Unshaped Refractory

Classification

What kind of refractory should you choose?

Unshaped refractory can be divided into below different types by the installation ways. Unshaped refractory can be divided into below different types as per the different raw manterials and additives and bindings.
  • high strength refractory castable

    Magnesia Mortar for basic bricks

  • refractory castable

    Silica Mortar for silicon oxide brick

  • insulation castable

    Refractory Mortar

  • refractory castable

    Clay chamotte refractory castable

  • refractory castable

    Thermal insulation refractory castable

  • high strength refractory castable

    High alumina refractory castable

  • Design/Construction

    How to save your project cost?

    Before the application of unshaped refractories, it’s quite necessary to analysis below factors:

    • To choose the suitable lining materials according to the furnace type, structure and furnace operating condition, it can help to minimize and balance the project costs.
    • To design reasonable lining structure, and matched with suitable refractory lining materials to maximize the furnace service life and save operating costs.

    Furnace Wall – Design and RefractoriesFurnace wall usually be constructed with light and heavy refractories with two layers:

    1.Insulation layer (40-200mm thickness) with ceramic board or blanket, insulation fire brick.

    2.Refractory working layer(230-300mm thickness) with refractory bricks or castable.

    Anchor metal parts are the necessary connections during the lining construction.

    Furnace Roof – Design and Refractories

    Similar with furnace wall lining design and refractories.

    Installation

    Do you really know how to install the unshaped refractories?

    • Inspection
      • It’s important to inspect the furnace structure is qualified and available for installation.
    • Preparation
      • Cleaning the nearby working environment to be tidy and clean.
      • Preparing for related facilities, tools and materials.
    • Installation
      • Reading installation manual
      • Testing material ratio before installation

    Baking and application

    Do you think you can put into practice directly after installation? No!

    Before operating the furnace and after installation of the furnace lining, there’s an important work to be done is baking the furnace as per the refractory material properties and follow up the refractory manufacturer’s baking curve step by step.

    Questions: 

    • Why should you baking the furnace lining before operating?
    • Before baking, what should you do?

    Baking curve is provided as per the discrepancy of various refractory materials.

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