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Magnesia carbon bricks for eaf

LMM YOTAI PRODUCT

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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MgO-C bricks for EAF side wall

Refractories for EAF side wall
  • Side wall refractories for EAF : LY-S-NSA-110XMA

Especially S-NSA has developed as especially for side wall hot spots in bricks for electric arc furnace. In order to meet variety of needs, YOTAI supplies plenty of variations by replacing grade of raw materials or carbon content, introduced below.

 Feature of LY-S-NSA

  • Base of carbon content is set as 20% to take advantage of carbon characteristics.
  • Varieties of brands are developed by corporate with different grades of raw materials and carbon contents.
  • High durability is carried out for hot spots by adopting high purity materials and dense construction.
  • Bricks used for except hot spots are took into account of balance and durability and cost by replacing grade of materials.
  • Low carbon type supports for oxidization damage by oxidization slag.

Technical data of side wall refractories

 S-NSA-320XS-NSA-220XS-NSA-120XS-NSA-120XMA
Chemical Composition(%)
MgO76767778
C20202020
Physical Property
Bulk Density2.852.882.92.95
Apparent Porosity(%)3333
CCS (MPa)30303540
UseFB, MLSL, MLHS, SLHS , SL
FeatureLow costGeneralCorrosion resistanceCorrosion resistance
 S-NSA-130XS-NSA-115XMAS-NSA-110XMAS-NSA-108XMA
Chemical Composition (%)
MgO65828589
C2815108
Physical Property
Bulk Density2.7833.073.18
Apparent Porosity(%)3332
CCS (MPa)35404550
UseHSHS, SLSLSL
FeatureHigh C quantity For HSGeneral for DC furnaceGeneral for DC furnace Peroxide resistanceFor DC furnaces Peroxide desistance

FB: Free board part / ML: Metal line part / SL: Slag line part / HS: Hot spot part

MgO-C bricks for EAF bottom tap hole (E.B.T)

Refractories for EAF bottom tap hole

Eccentric bottom tapping has been applied as a latest technology. High resistances to corrosion, spalling, oxidation are required for refractories for E.B.T. YOTAI provides the best material for each sections.

 MG-15CXMG-15SXASG-XS-MH
 Tapping tubeSetting brickTerminal blockSealing stamp material
Chemical Composition(%)    
SiO2  25
Al2O3  70 
MgO7676 90
SiC  10 
C161412 
Apparent Porosity (%)567 
Bulk Density2.922.92.9 
Cold Crushing Strength(MPa)424050 
Grain composition(%)    
1.18≦   42
0.09>    40

MgO-C bricks for Electrode of furnace bottom

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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