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Products we offer


Upper nozzles

The product formula of Shangshuikou independently developed by the company adopts the main raw materials such as tabular corundum, white corundum, silicon carbide, metal aluminum, and high-quality magnesia. The flake graphite carbon source with good oxidation resistance is selected, a small amount of antioxidant is added to improve the oxidation resistance, and the phenolic resin with high solid content and high residual carbon is used as the binder. After high pressure forming, it can be dipped according to the conditions of use.
It has the characteristics of good thermal shock resistance, high temperature strength, strong erosion resistance and strong erosion resistance; it has a long service life and is suitable for a wide range of steel types.

Plate series MgO Al2O3 CaO C Bulk density (g/cm3) Apparent porosity(%)
Upper nozzles LY-TN-5D 83 8 3.04 9
LY-TN-9C 76 8 2.95 5
LY-TN-32B-2 90 4.5 3.03 7
LY-TN-34A 85 5 3 6
LY-TN-139 88 6.5 3.1 7
LY-LMT 28 67 4.5 3.05 4
LY-TN95CA 96.5 1.5 3.2 12
LY-TN90CMA 5 90 1.5 3.16 12

Lower nozzles

The company’s self-developed product formula for the sewers uses tabular corundum, white corundum, mullite and other main raw materials, selects flake graphite carbon source with good oxidation resistance, and adds metal aluminum powder, metal silicon powder and other additives to improve high temperature resistance. Performance, using phenolic resin with high solid content and high carbon residue as binder. It is integrally formed with the steel shell or the blank is separately high-pressure formed.
It has good volume stability; it has excellent thermal shock resistance, high temperature bending resistance, good thermal shock resistance, small hole expansion and good corrosion resistance. Wide adaptability and safe to use.

Plate series MgO Al2O3 CaO C Bulk density (g/cm3) Apparent porosity(%)
Lower nozzles LY-BN-9C 76 8 2.95 5
LY-BN-9A 68 6 2.7 9
LY-BN-14 80 5.5 3.01 6.5
LY-BN-14A 73 8 2.67 6
LY-BN-34A 85 5 2.97 7
LY-BN95CA 96.5 1.5 3.2 13
LY-BN90CMA 5 90 1.5 3.16 13
LY-GJZ-4 88 1.5 3.07 14



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.

Our Clients Give The Best Feedback

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The MgO-C bricks which used in EAF has a good performance in 75 furnaces, we are so satificated with the using performance of the bricks from LMM YOTAI
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We improved the bricks formula and specification accoridng to our experience, the final using performance doubled compared with their previous specification.
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In the ladle we have been using high alumina bricks with a performance of 50 heats. After the improved design of LMM YOTAI engineers, we use magnesia carbon bricks instead of high alumina bricks, and the performance reaches 60 furnaces and is still running.

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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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