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Magnesia dolomite For eaf


LMM TOTAI offer a complete product and service portfolio for all steelmaking processes.
From basic and non-basic bricks and mixes, slide gate plates, isostatic products and prefab components to special machinery, mechanisms and repair systems.

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Magnesia-dolomite materials for EAF hearth

Wet type of stamping material, which magnesia is mixed with bittern solution and molded by rammer, is generally used for lining material for hearth of electric arc furnace. However, in case of severe operation conditions on hearth of DC furnace or any, dry type of magnesia-dolomite stamping material which emphasizes sinterability is mainly chosen. YOTAI supplies kinds of materials introduced below.

Wet Type Stamping Material

  • Superior in slag corrosion  resistance.
  • Grades are divided by magnesia raw material.
  • Mix after adding bittern solution or Magnesium  Chloride powder with water
  • Constructed by rammer or vibrating stamping machine.

Dry Type Stamping Material

  • Superior to sinterability. Dense and high intensity construction can be offered.
  • Grades are divided by amount of dolomite material.
  • Constructed by vibration fabrication in dry condition.

Magnesia-dolomite materials for EAF repairing

These materials are applied for hot gunning for electronic furnace repair, and used of basic gunning material in general. Yotai consider for various kind of materials and develop the materials to get the satisfaction by user, and the introduction is mentioned as below.

  • We have general type using virgin materials, and cost cut type using recycled materials.

  • Our general type has Magnesia G-E series for corrosion resistance, Magnesia dolomite G-MD/HD series for Sinterability to wall of furnace and Magnesia spinel type of G-E1SP/BSP8 for suitable to operation in low C/S slag line.

  • Our cost down type has Magnesia Chrome G-R2Y, that is made by recycled material. The recycled material after using at the furnace is provided by steel manufacturer, and is done for sizing and grading.
 Gunning repairing material

Chemical composition, grain composition and features

LMM YOTAI established in 2007. Our production technology comes from Japanese Yotai. As an experienced and international player in the refractories industry. We have succeeded in expanding both the breadth of its product range and the depth of its services. From raw material selection, refractory portofio & optimization, installation & services & recycle of used refractories on site to further reduce client’s Opex & Capex in refractory consumption per ton steel output, meanwhile improve product quality of client.

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