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High-performance refractory bricks engineered for extreme thermal environments — trusted by leading Russian metallurgical and industrial facilities.
Understanding the material science behind one of the most critical components in high-temperature industrial operations.
Corundum refractory bricks are manufactured primarily from fused corundum or sintered corundum, with alumina (Al₂O₃) content typically exceeding 90%. Their exceptional hardness, outstanding resistance to thermal shock, superior chemical inertness, and ability to maintain structural integrity at temperatures above 1700°C make them indispensable in demanding industrial applications across Russia and globally.
Maintains full structural integrity at operating temperatures exceeding 1700°C, ideal for Russia's electric arc furnaces and blast furnaces.
Withstands rapid temperature cycling without cracking — critical for Russia's intermittent industrial processes and cold-climate operations.
Highly resistant to acidic and alkaline slags, molten metals, and corrosive gases prevalent in Russian metallurgical environments.
Cold crushing strength exceeding 200 MPa ensures long service life even under heavy mechanical loads in Russian industrial settings.
Apparent porosity below 18% minimizes infiltration of molten materials, extending lining life in Russian steel converters and ladles.
Tight dimensional tolerances ensure seamless installation and minimal joint gaps, reducing heat loss in Russian industrial furnaces.
Russia is one of the world's largest consumers of refractory materials, driven by its massive steel, cement, glass, and petrochemical industries. Corundum refractory bricks play a pivotal role across all these sectors.
Russia is the world's 5th largest steel producer, with companies like Severstal, NLMK, MMK, and Evraz operating some of the most demanding furnace environments globally. Corundum refractory bricks are essential for lining electric arc furnaces (EAF), basic oxygen furnaces (BOF), ladle furnaces, and continuous casting systems. The extreme thermal and chemical stresses in Russian steelmaking demand the highest quality corundum bricks with Al₂O₃ content above 95%.
Russia operates over 50 large cement plants, many located in the Ural region, Siberia, and the Volga-Ural basin. Rotary cement kilns require corundum refractory bricks in the burning zone where temperatures regularly exceed 1450°C. With Russia's ongoing infrastructure development programs — including housing construction, road building, and industrial facility expansion — cement demand remains robust, sustaining strong corundum brick requirements nationwide.
Russia's glass industry, concentrated in regions such as Moscow Oblast, Leningrad Oblast, and the Ural Federal District, relies heavily on corundum refractory bricks for glass melting furnaces, regenerators, and forehearths. The purity of corundum ensures minimal contamination of glass melts, which is critical for producing high-quality flat glass, container glass, and specialty glass products for Russia's automotive, construction, and packaging sectors.
Russia's vast petrochemical complex — including Rosneft, Lukoil, Gazprom Neft, and Sibur refineries — requires high-performance corundum refractory bricks for reforming furnaces, cracking units, and hydrogen production reactors. The combination of high temperatures, hydrogen-rich atmospheres, and corrosive chemical environments makes corundum bricks the preferred lining material for these critical assets.
Russia is a global leader in aluminum, nickel, copper, and titanium production. Nornickel, RUSAL, and VSMPO-AVISMA are among the world's largest non-ferrous metal producers. Their smelting furnaces, converters, and holding furnaces require corundum refractory bricks capable of withstanding aggressive molten non-ferrous metals and their slags, making premium-grade corundum solutions essential for operational continuity.
Russia's extreme continental climate — with temperatures dropping below -40°C in Siberia and the Far East — presents unique challenges for refractory installation and performance. SK Refractories' corundum bricks are engineered with enhanced thermal shock resistance to accommodate the severe thermal gradients experienced during furnace start-up and shutdown cycles in cold-climate Russian industrial facilities.
Russia's refractory industry is undergoing significant transformation driven by modernization, sustainability mandates, and import substitution policies.
Russia's refractory materials market is projected to grow at 7.2% CAGR through 2028, driven by steel industry modernization and infrastructure investment programs.
The Russian refractory market is expected to reach 180 billion rubles by 2027, with corundum-based products representing the fastest-growing segment.
Russia's import substitution policy (импортозамещение) aims to reduce reliance on Western refractory suppliers, creating significant opportunities for Chinese manufacturers like SK Refractories.
Russia's national steel industry modernization plan through 2030 mandates upgrades to furnace linings across 40+ major facilities, driving substantial corundum brick procurement.
Russia's shift toward electric arc furnace steelmaking — more environmentally efficient than BOF — is accelerating demand for premium corundum EAF lining bricks.
Russian industrial buyers increasingly require internationally certified refractory products meeting ISO, GOST, and EN standards — a benchmark SK Refractories fully satisfies.
SK Refractories provides corundum bricks in multiple grades to match the specific requirements of Russian industrial applications.
| Property | Standard Grade (GK-90) | Premium Grade (GK-95) | Ultra-Pure Grade (GK-99) |
|---|---|---|---|
| Al₂O₃ Content | ≥ 90% | ≥ 95% | ≥ 99% |
| Bulk Density (g/cm³) | ≥ 3.20 | ≥ 3.45 | ≥ 3.70 |
| Apparent Porosity | ≤ 20% | ≤ 18% | ≤ 15% |
| Cold Crushing Strength (MPa) | ≥ 150 | ≥ 200 | ≥ 250 |
| Refractoriness Under Load (°C) | ≥ 1580 | ≥ 1650 | ≥ 1700 |
| Max Service Temperature (°C) | 1700 | 1750 | 1800+ |
| Thermal Shock Resistance (cycles) | ≥ 20 | ≥ 30 | ≥ 40 |
| Recommended Russian Application | Cement kilns, glass furnaces | Steel ladles, EAF linings | Special alloy furnaces, petrochemical reactors |
From the industrial heartland of the Urals to the steel mills of Cherepovets and the refineries of Siberia — SK corundum bricks deliver proven performance.
The Ural Federal District hosts Russia's densest concentration of metallurgical enterprises. SK corundum bricks supply EAF linings for Chelyabinsk Steel Plant and similar facilities, providing 18–24 months of service life per campaign.
Leningrad and Novgorod regions' glass manufacturers utilize SK corundum bricks in regenerator checkerwork and crown linings, achieving 20–30% longer service intervals compared to conventional high-alumina alternatives.
Tobolsk and Omsk petrochemical complexes deploy SK ultra-pure corundum bricks (GK-99) in reforming furnace radiant sections, where hydrogen embrittlement resistance is paramount.
Nornickel's Norilsk operations, the world's largest nickel and palladium producer, require corundum refractory solutions capable of withstanding highly corrosive nickel-copper matte at temperatures exceeding 1400°C.
Russia's Volga Federal District, home to major cement producers including Eurocement and Holcim Russia, relies on SK silicon mullite and corundum bricks for rotary kiln burning zone linings with extended campaign life.
Russia's Far East development program (FEFD) is driving new industrial construction, creating demand for corundum refractory bricks in greenfield steel mini-mills, LNG processing facilities, and shipbuilding furnaces.
Zhengzhou SK Refractory Co., Ltd. (SK) located in Xinmi, Zhengzhou China. For over twenty years, SK Refractories has been dedicated to delivering high-performance, reliable solutions that redefine durability and efficiency for clients worldwide. Founded on the principles of innovation, quality, and sustainability, SK serves key sectors including steelmaking, cement production, non-ferrous metallurgy, glass manufacturing, and petrochemical processing.
SK Refractories' quality is embedded in every aspect of operations, from raw material sourcing to production and delivery. We partner with trusted suppliers to secure premium-grade raw materials, leveraging advanced manufacturing processes — such as automated pressing and controlled sintering — to ensure consistency and reliability. Our quality management system is certified to ISO 9001.
Main refractory products include zircon bricks, corundum bricks, mullite bricks, sillimanite bricks, silica bricks, magnesia bricks, low porosity fireclay blocks, insulation bricks and more. SK Refractories has an annual production capacity of 20,000+ tons.
Contact UsSK Refractories is well known in domestic markets and abroad for the quality of refractory bricks. The refractory materials produced by SK Refractories have been exported to more than 35 countries such as America, Spain, Germany, Italy, Brazil, Belgium, India, Japan, Korea, and increasingly to Russia and CIS nations. The main products include Silica Brick, Low Porosity Fireclay Blocks, Sillimanite Brick, Corundum Brick, Zircon Brick, Mullite Brick, Insulating Bricks, Refractory Castables and Refractory Mortar.
Our obligation is to supply high quality refractory materials and service to achieve long lifetime of high temperature furnaces. SK Refractories will always improve itself to provide better refractory products and service to customers all over the world.
Delivering competitive corundum refractory brick quotes with uncompromising quality for Russia's most demanding industrial environments.
Direct factory supply eliminates intermediary costs. SK provides transparent, competitive corundum brick quotes tailored to Russian procurement requirements and volume needs.
Established shipping routes via Vladivostok, St. Petersburg, and overland rail (Trans-Siberian corridor) ensure timely delivery to any Russian industrial location.
Complete export documentation including certificates of conformity, material test reports, packing lists, and customs declarations for smooth Russian import clearance.
SK's in-house engineering team designs custom corundum brick shapes and grades to match the exact specifications of Russian furnace designs and operating conditions.
SK builds lasting relationships with Russian industrial buyers through consistent quality, responsive technical support, and flexible supply arrangements for ongoing maintenance needs.
SK Refractories offers Russian-language technical consultation and quotation services, making procurement seamless for Russian-speaking buyers and procurement teams.
Beyond corundum bricks, SK Refractories supplies a comprehensive range of high-performance refractory solutions for every Russian industrial application.
We sincerely welcome both new and existing international customers to cooperate with us in a friendly manner and work together to create a bright future! Contact SK Refractories for competitive pricing, technical consultation, and customized refractory solutions for your Russian industrial operations.
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