Import Direct-Bonded Magnesia-Chrome Bricks — Buy in Bulk from Supplier in China

Direct-bonded magnesia-chrome bricks from Dalian Oak International Co,.Ltd. are composed of high-purity or secondary-purity fused magnesia and chrome concentrate, with phases directly bonded to minimize glass content. The source indicates low porosity and high cold crushing strength as key characteristics, with enhanced resistance to abrasion and thermal spalling. These bricks are engineered for demanding environments such as electric arc furnaces and non-ferrous smelting vessels where slag corrosion and thermal cycling are critical.

The product uses fused magnesia to ensure higher purity and fewer impurities compared to sintered alternatives. Chrome concentrate contributes to spinel formation, improving slag adhesion and reducing penetration. Typical industry specifications for this grade include porosity under 14% and cold crushing strength above 50 MPa, though the supplier does not specify exact values. The absence of a glass phase enhances chemical stability in alkaline and oxidizing atmospheres.

These bricks are selected by steel producers and copper smelters for lining tuyeres, slag lines, and furnace roofs. Buyers should confirm the exact source of magnesia and chrome feedstock, as performance varies with mineral origin. Packaging is not detailed, but standard export practice uses palletized wooden crates with plastic wrapping. Trade terms are not stated; buyers must request MOQ, lead time, and Incoterms directly from the supplier.

Dalian Oak International Co,.Ltd. is registered in Shahekou District, Dalian City, China, with no additional operational details disclosed. The company is listed as an exporter of refractory products, but no information is provided on manufacturing facilities, quality control systems, or years of operation. Its trust tier is harbor, indicating basic business registration verification only.

The supplier does not claim to produce these bricks in-house or disclose any certifications, testing equipment, or client references. There is no indication of whether the bricks are sourced from affiliated producers or third-party manufacturers. Buyers should request batch-specific test reports and confirm the origin of raw materials, as performance depends heavily on the purity of fused magnesia and chrome concentrate used.