Engineering Design
We deliver customized refractory and thermal designs for non-ferrous furnaces, tailored to diverse operating conditions.
Non-Ferrous
MRL is dedicated to supporting the non-ferrous metallurgy industry, serving major global smelters across diverse metals including anode copper, electrolytic lead, high-ice nickel, crude zinc, tin alloys, and precious metal recovery. With complex process routes and varied furnace types, MRL focuses on pyrometallurgical systems and offers integrated refractory solutions for over ten furnace categories—helping clients extend refractory life, cut maintenance costs, and ensure reliable and efficient smelting operations.
One-stop Non-Ferrous Solution
Material Supply
We offer a full range of in-house developed refractory products engineered for smelting, converting, refining, and other critical furnace zones.
On-Site Installation
We deliver standardized installation, on-site support, and remote guidance to ensure construction quality and efficiency.
Lifecycle Support
We provide full-cycle technical support to extend lining life, enhance performance, and reduce downtime risk.
Professional Solution for every non-ferrous furnace
Non-ferrous metallurgy requires diverse furnace designs and refractory solutions due to varied processes and metals. MRL specializes in pyrometallurgy, supporting over ten furnace types and will showcase through four typical units how we address thermal shock, slag erosion, and metal penetration with durable, low-maintenance refractory systems.
Flash Smelting Furnace
The flash smelting furnace is a core unit in copper and non-ferrous pyrometallurgy, responsible for rapid concentrate smelting, desulfurization, and preliminary slag formation. It offers high efficiency, low emissions, and stable output, while its linings endure extreme temperatures, redox atmospheres, slag corrosion, and thermal shocks. The performance and reliability of its refractory lining are essential to sustaining continuous operation, controlling reaction stability, and ensuring long campaign life under extreme thermal and chemical conditions.
Challenge & Solution
Reaction Shaft
The reaction shaft is continuously exposed to sulfide attack, SO₂-rich gases, metal splash, and severe thermal shock, which places extremely high demands on chemical stability and thermal shock resistance of the lining materials. To ensure reliable long-term operation under such aggressive conditions. MRL applies FMK & SMK series bricks as the working lining, providing strong resistance to chemical corrosion, thermal cycling, and oxidizing atmospheres.
Settler Wall & Hearth
Operating under constant matte penetration and aggressive high-temperature slag attack, the settler wall and hearth are prone to stress concentration and premature lining degradation. MRL selects FMK series bricks for these zones to enhance corrosion resistance and structural reliability, ensuring stable performance under combined chemical and thermal loads.
Uptake Shaft
The uptake shaft is subjected to continuous acidic gas erosion and cyclic thermal loading, which can lead to spalling and long-term structural fatigue. To address these challenges, FMK & SMK series materials are applied to improve resistance to flue-gas corrosion and thermal cycling, supporting sustained lining stability.
Tap Hole
Frequent tapping operations combined with intense erosion from molten matte and slag require refractories with both high abrasion resistance and thermal shock stability. MRL utilizes KAB & FMK series bricks in the tap hole area to ensure reliable wear resistance, thermal durability, and structural compatibility throughout repeated tapping cycles.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.
PS Converter
The PS converter is a key vessel in the copper smelting process, removing sulfur and iron from matte to refine blister copper. It endures severe operating conditions including molten copper scouring, oxygen jetting, chemical attack, and frequent thermal cycling, demanding highly durable refractory linings.
Challenge & Solution
Tuyere
The tuyere is directly exposed to high-velocity oxygen injection, molten matte erosion, and severe thermal shock, making it one of the most wear-intensive and failure-prone areas in PS converters. MRL applies FMK & SMK series bricks, combining excellent resistance to molten metal attack, oxygen jet erosion, and thermal shock to ensure stable tuyere performance under continuous blowing conditions.
Tuyere Zone
Surrounding the tuyere, this zone endures extreme local thermal gradients, turbulent molten metal flow, and cyclic oxidation–reduction conditions, leading to rapid lining degradation if material stability is insufficient. FMK series bricks are selected for the tuyere zone to provide strong slag resistance, thermal shock stability, and structural integrity under concentrated thermal and mechanical loads.
Shell
The shell zone operates under sustained high temperature, chemical corrosion from process gases, and structural stress from cyclic heating and cooling, which may cause lining loosening or deformation over time. MRL utilizes SMK series bricks with balanced hot strength and oxidation resistance to maintain lining stability and support long-term converter operation.
Safety Lining
As the final protective barrier, the safety lining must provide reliable thermal insulation and structural stability to protect the converter shell under abnormal wear or local lining failure. DMK series bricks form a stable, low-risk safety lining system, offering consistent insulation performance and mechanical reliability to safeguard the converter structure during long-term service.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.
Anode Furnace
The anode furnace is a crucial copper refining unit that oxidizes and purifies blister copper before casting it into anodes. It operates under high-temperature molten copper flow, oxygen-rich atmospheres, and severe thermal cycling, requiring robust refractory performance.
Challenge & Solution
Burning Port
The burning port is directly exposed to molten copper flow, oxygen jet impingement, and severe thermal shock, making it highly susceptible to spalling and chemical corrosion. MRL applies RM & KM series materials to provide enhanced resistance to molten copper erosion and thermal shock, ensuring stable and reliable burning port performance under frequent refining operations.
Working Lining
The working lining operates under continuous high-temperature oxidation, molten copper contact, and repeated thermal cycling, which can lead to surface wear, fatigue, and gradual lining degradation. FMK & SMK series bricks are selected to deliver strong oxidation resistance, molten copper corrosion resistance, and thermal stability, supporting long service life in demanding refining conditions.
Tuyere
The tuyere faces direct oxygen injection and intense interaction with molten copper, resulting in extreme thermal gradients and chemical stress concentrated in a limited area. MRL utilizes FMK series materials with excellent resistance to oxygen jet erosion and molten metal attack, maintaining tuyere integrity and operational stability.
Safety Lining
As the final protective layer, the safety lining must provide long-term thermal insulation and mechanical robustness to protect the furnace shell from heat and impact. DMK series bricks form a stable and durable safety lining system, offering reliable insulation performance and structural protection throughout extended furnace campaigns.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.
Tilting Furnace
The tilting furnace is a key refining unit used for oxidizing and reducing blister copper, with molten metal discharged through full-body tilting. It operates under molten copper, oxygen injection, slag separation and cyclic tilting-induced mechanical and thermal shocks, demanding refractories with strong erosion resistance, thermal-shock stability, and structural reliability.
Challenge & Solution
Burning Port
The burning port is exposed to molten copper flow, oxygen jetting, and severe thermal shock, making it highly prone to spalling and localized overburn. MRL applies RM & KM series materials to improve resistance to erosion and thermal shock, ensuring stable performance under high heat flux conditions.
Slag Line
The slag line endures continuous attack from high-temperature molten slag, redox atmosphere cycling, and thermal shock, making it one of the most failure-prone zones. FMK & KAS series materials are selected to withstand aggressive slag corrosion and redox fluctuations, significantly stabilizing lining performance in this critical zone.
Tuyere
The tuyere area faces intense oxygen injection and molten copper turbulence, resulting in rapid chemical attack and mechanical erosion. MRL utilizes FMK series materials with strong oxidation resistance and thermal shock stability to maintain tuyere integrity under severe blowing conditions.
Roof
The roof experiences concentrated thermal stress, high-temperature fume impingement, and frequent temperature fluctuations, which may lead to cracking or localized overburn. MRL applies DMK & SMK materials to enhance high-temperature strength and resistance to thermal stress accumulation in the roof area.
Wall
Furnace walls are continuously exposed to hot gases, volatile species, and cyclic tilting-induced mechanical fatigue, increasing the risk of cracking and spalling. FMK & SMK bricks provide a balanced combination of slag resistance, thermal shock tolerance, and structural stability to support long-term wall performance.
Bottom
The furnace bottom operates under high thermal load from molten copper, slag accumulation, and mechanical impact, requiring strong load-bearing and erosion resistance. FMK series materials are used to reinforce bottom structure integrity and extend service life under combined thermal and mechanical stress.
Safety Lining
As the final protective barrier, the safety lining must ensure reliable insulation and structural stability to prevent heat transfer and shell damage. MRL standardizes the use of DMK series bricks to form a stable insulating layer that safeguards the furnace shell throughout long-term operation.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.
Non-Ferrous
MRL is dedicated to supporting the non-ferrous metallurgy industry, serving major global smelters across diverse metals including anode copper, electrolytic lead, high-ice nickel, crude zinc, tin alloys, and precious metal recovery. With complex process routes and varied furnace types, MRL focuses on pyrometallurgical systems and offers integrated refractory solutions for over ten furnace categories—helping clients extend refractory life, cut maintenance costs, and ensure reliable and efficient smelting operations.
One-stop Non-Ferrous Solution
Engineering Design
We deliver customized refractory and thermal designs for non-ferrous furnaces, tailored to diverse operating conditions.
Material Supply
We offer a full range of in-house developed refractory products engineered for smelting, converting, refining, and other critical furnace zones.
On-Site Installation
We deliver standardized installation, on-site support, and remote guidance to ensure construction quality and efficiency.
Lifecycle Support
We provide full-cycle technical support to extend lining life, enhance performance, and reduce downtime risk.
Professional Solution for every non-ferrous furnace
Non-ferrous metallurgy requires diverse furnace designs and refractory solutions due to varied processes and metals. MRL specializes in pyrometallurgy, supporting over ten furnace types and will showcase through four typical units how we address thermal shock, slag erosion, and metal penetration with durable, low-maintenance refractory systems.
Flash Smelting Furnace
The flash smelting furnace is a core unit in copper and non-ferrous pyrometallurgy, responsible for rapid concentrate smelting, desulfurization, and preliminary slag formation. It offers high efficiency, low emissions, and stable output, while its linings endure extreme temperatures, redox atmospheres, slag corrosion, and thermal shocks. The performance and reliability of its refractory lining are essential to sustaining continuous operation, controlling reaction stability, and ensuring long campaign life under extreme thermal and chemical conditions.
Challenge & Solution
Reaction Shaft
The reaction shaft is continuously exposed to sulfide attack, SO₂-rich gases, metal splash, and severe thermal shock, which places extremely high demands on chemical stability and thermal shock resistance of the lining materials. To ensure reliable long-term operation under such aggressive conditions. MRL applies FMK & SMK series bricks as the working lining, providing strong resistance to chemical corrosion, thermal cycling, and oxidizing atmospheres.
Settler Wall & Hearth
Operating under constant matte penetration and aggressive high-temperature slag attack, the settler wall and hearth are prone to stress concentration and premature lining degradation. MRL selects FMK series bricks for these zones to enhance corrosion resistance and structural reliability, ensuring stable performance under combined chemical and thermal loads.
Uptake Shaft
The uptake shaft is subjected to continuous acidic gas erosion and cyclic thermal loading, which can lead to spalling and long-term structural fatigue. To address these challenges, FMK & SMK series materials are applied to improve resistance to flue-gas corrosion and thermal cycling, supporting sustained lining stability.
Tap Hole
Frequent tapping operations combined with intense erosion from molten matte and slag require refractories with both high abrasion resistance and thermal shock stability. MRL utilizes KAB & FMK series bricks in the tap hole area to ensure reliable wear resistance, thermal durability, and structural compatibility throughout repeated tapping cycles.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.
PS Converter
The PS converter is a key vessel in the copper smelting process, removing sulfur and iron from matte to refine blister copper. It endures severe operating conditions including molten copper scouring, oxygen jetting, chemical attack, and frequent thermal cycling, demanding highly durable refractory linings.
Challenge & Solution
Tuyere
The tuyere is directly exposed to high-velocity oxygen injection, molten matte erosion, and severe thermal shock, making it one of the most wear-intensive and failure-prone areas in PS converters. MRL applies FMK & SMK series bricks, combining excellent resistance to molten metal attack, oxygen jet erosion, and thermal shock to ensure stable tuyere performance under continuous blowing conditions.
Tuyere Zone
Surrounding the tuyere, this zone endures extreme local thermal gradients, turbulent molten metal flow, and cyclic oxidation–reduction conditions, leading to rapid lining degradation if material stability is insufficient. FMK series bricks are selected for the tuyere zone to provide strong slag resistance, thermal shock stability, and structural integrity under concentrated thermal and mechanical loads.
Shell
The shell zone operates under sustained high temperature, chemical corrosion from process gases, and structural stress from cyclic heating and cooling, which may cause lining loosening or deformation over time. MRL utilizes SMK series bricks with balanced hot strength and oxidation resistance to maintain lining stability and support long-term converter operation.
Safety Lining
As the final protective barrier, the safety lining must provide reliable thermal insulation and structural stability to protect the converter shell under abnormal wear or local lining failure. DMK series bricks form a stable, low-risk safety lining system, offering consistent insulation performance and mechanical reliability to safeguard the converter structure during long-term service.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.
Anode Furnace
The anode furnace is a crucial copper refining unit that oxidizes and purifies blister copper before casting it into anodes. It operates under high-temperature molten copper flow, oxygen-rich atmospheres, and severe thermal cycling, requiring robust refractory performance.
Challenge & Solution
Burning Port
The burning port is directly exposed to molten copper flow, oxygen jet impingement, and severe thermal shock, making it highly susceptible to spalling and chemical corrosion. MRL applies RM & KM series materials to provide enhanced resistance to molten copper erosion and thermal shock, ensuring stable and reliable burning port performance under frequent refining operations.
Working Lining
The working lining operates under continuous high-temperature oxidation, molten copper contact, and repeated thermal cycling, which can lead to surface wear, fatigue, and gradual lining degradation. FMK & SMK series bricks are selected to deliver strong oxidation resistance, molten copper corrosion resistance, and thermal stability, supporting long service life in demanding refining conditions.
Tuyere
The tuyere faces direct oxygen injection and intense interaction with molten copper, resulting in extreme thermal gradients and chemical stress concentrated in a limited area. MRL utilizes FMK series materials with excellent resistance to oxygen jet erosion and molten metal attack, maintaining tuyere integrity and operational stability.
Safety Lining
As the final protective layer, the safety lining must provide long-term thermal insulation and mechanical robustness to protect the furnace shell from heat and impact. DMK series bricks form a stable and durable safety lining system, offering reliable insulation performance and structural protection throughout extended furnace campaigns.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.
Tilting Furnace
The tilting furnace is a key refining unit used for oxidizing and reducing blister copper, with molten metal discharged through full-body tilting. It operates under molten copper, oxygen injection, slag separation and cyclic tilting-induced mechanical and thermal shocks, demanding refractories with strong erosion resistance, thermal-shock stability, and structural reliability.
Challenge & Solution
Burning Port
The burning port is exposed to molten copper flow, oxygen jetting, and severe thermal shock, making it highly prone to spalling and localized overburn. MRL applies RM & KM series materials to improve resistance to erosion and thermal shock, ensuring stable performance under high heat flux conditions.
Slag Line
The slag line endures continuous attack from high-temperature molten slag, redox atmosphere cycling, and thermal shock, making it one of the most failure-prone zones. FMK & KAS series materials are selected to withstand aggressive slag corrosion and redox fluctuations, significantly stabilizing lining performance in this critical zone.
Tuyere
The tuyere area faces intense oxygen injection and molten copper turbulence, resulting in rapid chemical attack and mechanical erosion. MRL utilizes FMK series materials with strong oxidation resistance and thermal shock stability to maintain tuyere integrity under severe blowing conditions.
Roof
The roof experiences concentrated thermal stress, high-temperature fume impingement, and frequent temperature fluctuations, which may lead to cracking or localized overburn. MRL applies DMK & SMK materials to enhance high-temperature strength and resistance to thermal stress accumulation in the roof area.
Wall
Furnace walls are continuously exposed to hot gases, volatile species, and cyclic tilting-induced mechanical fatigue, increasing the risk of cracking and spalling. FMK & SMK bricks provide a balanced combination of slag resistance, thermal shock tolerance, and structural stability to support long-term wall performance.
Bottom
The furnace bottom operates under high thermal load from molten copper, slag accumulation, and mechanical impact, requiring strong load-bearing and erosion resistance. FMK series materials are used to reinforce bottom structure integrity and extend service life under combined thermal and mechanical stress.
Safety Lining
As the final protective barrier, the safety lining must ensure reliable insulation and structural stability to prevent heat transfer and shell damage. MRL standardizes the use of DMK series bricks to form a stable insulating layer that safeguards the furnace shell throughout long-term operation.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.
Non-Ferrous
MRL is dedicated to supporting the non-ferrous metallurgy industry, serving major global smelters across diverse metals including anode copper, electrolytic lead, high-ice nickel, crude zinc, tin alloys, and precious metal recovery. With complex process routes and varied furnace types, MRL focuses on pyrometallurgical systems and offers integrated refractory solutions for over ten furnace categories—helping clients extend refractory life, cut maintenance costs, and ensure reliable and efficient smelting operations.
One-stop Non-Ferrous Solution
Engineering Design
We deliver customized refractory and thermal designs for non-ferrous furnaces, tailored to diverse operating conditions.
Material Supply
We offer a full range of in-house developed refractory products engineered for smelting, converting, refining, and other critical furnace zones.
On-Site Installation
We deliver standardized installation, on-site support, and remote guidance to ensure construction quality and efficiency.
Lifecycle Support
We provide full-cycle technical support to extend lining life, enhance performance, and reduce downtime risk.
Professional Solution for every non-ferrous furnace
Non-ferrous metallurgy requires diverse furnace designs and refractory solutions due to varied processes and metals. MRL specializes in pyrometallurgy, supporting over ten furnace types and will showcase through four typical units how we address thermal shock, slag erosion, and metal penetration with durable, low-maintenance refractory systems.
Flash Smelting Furnace
The flash smelting furnace is a core unit in copper and non-ferrous pyrometallurgy, responsible for rapid concentrate smelting, desulfurization, and preliminary slag formation. It offers high efficiency, low emissions, and stable output, while its linings endure extreme temperatures, redox atmospheres, slag corrosion, and thermal shocks. The performance and reliability of its refractory lining are essential to sustaining continuous operation, controlling reaction stability, and ensuring long campaign life under extreme thermal and chemical conditions.
Challenge & Solution
Reaction Shaft
The reaction shaft is continuously exposed to sulfide attack, SO₂-rich gases, metal splash, and severe thermal shock, which places extremely high demands on chemical stability and thermal shock resistance of the lining materials. To ensure reliable long-term operation under such aggressive conditions. MRL applies FMK & SMK series bricks as the working lining, providing strong resistance to chemical corrosion, thermal cycling, and oxidizing atmospheres.
Settler Wall & Hearth
Operating under constant matte penetration and aggressive high-temperature slag attack, the settler wall and hearth are prone to stress concentration and premature lining degradation. MRL selects FMK series bricks for these zones to enhance corrosion resistance and structural reliability, ensuring stable performance under combined chemical and thermal loads.
Uptake Shaft
The uptake shaft is subjected to continuous acidic gas erosion and cyclic thermal loading, which can lead to spalling and long-term structural fatigue. To address these challenges, FMK & SMK series materials are applied to improve resistance to flue-gas corrosion and thermal cycling, supporting sustained lining stability.
Tap Hole
Frequent tapping operations combined with intense erosion from molten matte and slag require refractories with both high abrasion resistance and thermal shock stability. MRL utilizes KAB & FMK series bricks in the tap hole area to ensure reliable wear resistance, thermal durability, and structural compatibility throughout repeated tapping cycles.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.
PS Converter
The PS converter is a key vessel in the copper smelting process, removing sulfur and iron from matte to refine blister copper. It endures severe operating conditions including molten copper scouring, oxygen jetting, chemical attack, and frequent thermal cycling, demanding highly durable refractory linings.
Challenge & Solution
Tuyere
The tuyere is directly exposed to high-velocity oxygen injection, molten matte erosion, and severe thermal shock, making it one of the most wear-intensive and failure-prone areas in PS converters. MRL applies FMK & SMK series bricks, combining excellent resistance to molten metal attack, oxygen jet erosion, and thermal shock to ensure stable tuyere performance under continuous blowing conditions.
Tuyere Zone
Surrounding the tuyere, this zone endures extreme local thermal gradients, turbulent molten metal flow, and cyclic oxidation–reduction conditions, leading to rapid lining degradation if material stability is insufficient. FMK series bricks are selected for the tuyere zone to provide strong slag resistance, thermal shock stability, and structural integrity under concentrated thermal and mechanical loads.
Shell
The shell zone operates under sustained high temperature, chemical corrosion from process gases, and structural stress from cyclic heating and cooling, which may cause lining loosening or deformation over time. MRL utilizes SMK series bricks with balanced hot strength and oxidation resistance to maintain lining stability and support long-term converter operation.
Safety Lining
As the final protective barrier, the safety lining must provide reliable thermal insulation and structural stability to protect the converter shell under abnormal wear or local lining failure. DMK series bricks form a stable, low-risk safety lining system, offering consistent insulation performance and mechanical reliability to safeguard the converter structure during long-term service.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.
Anode Furnace
The anode furnace is a crucial copper refining unit that oxidizes and purifies blister copper before casting it into anodes. It operates under high-temperature molten copper flow, oxygen-rich atmospheres, and severe thermal cycling, requiring robust refractory performance.
Challenge & Solution
Burning Port
The burning port is directly exposed to molten copper flow, oxygen jet impingement, and severe thermal shock, making it highly susceptible to spalling and chemical corrosion. MRL applies RM & KM series materials to provide enhanced resistance to molten copper erosion and thermal shock, ensuring stable and reliable burning port performance under frequent refining operations.
Working Lining
The working lining operates under continuous high-temperature oxidation, molten copper contact, and repeated thermal cycling, which can lead to surface wear, fatigue, and gradual lining degradation. FMK & SMK series bricks are selected to deliver strong oxidation resistance, molten copper corrosion resistance, and thermal stability, supporting long service life in demanding refining conditions.
Tuyere
The tuyere faces direct oxygen injection and intense interaction with molten copper, resulting in extreme thermal gradients and chemical stress concentrated in a limited area. MRL utilizes FMK series materials with excellent resistance to oxygen jet erosion and molten metal attack, maintaining tuyere integrity and operational stability.
Safety Lining
As the final protective layer, the safety lining must provide long-term thermal insulation and mechanical robustness to protect the furnace shell from heat and impact. DMK series bricks form a stable and durable safety lining system, offering reliable insulation performance and structural protection throughout extended furnace campaigns.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.
Tilting Furnace
The tilting furnace is a key refining unit used for oxidizing and reducing blister copper, with molten metal discharged through full-body tilting. It operates under molten copper, oxygen injection, slag separation and cyclic tilting-induced mechanical and thermal shocks, demanding refractories with strong erosion resistance, thermal-shock stability, and structural reliability.
Challenge & Solution
Burning Port
The burning port is exposed to molten copper flow, oxygen jetting, and severe thermal shock, making it highly prone to spalling and localized overburn. MRL applies RM & KM series materials to improve resistance to erosion and thermal shock, ensuring stable performance under high heat flux conditions.
Slag Line
The slag line endures continuous attack from high-temperature molten slag, redox atmosphere cycling, and thermal shock, making it one of the most failure-prone zones. FMK & KAS series materials are selected to withstand aggressive slag corrosion and redox fluctuations, significantly stabilizing lining performance in this critical zone.
Tuyere
The tuyere area faces intense oxygen injection and molten copper turbulence, resulting in rapid chemical attack and mechanical erosion. MRL utilizes FMK series materials with strong oxidation resistance and thermal shock stability to maintain tuyere integrity under severe blowing conditions.
Wall
Furnace walls are continuously exposed to hot gases, volatile species, and cyclic tilting-induced mechanical fatigue, increasing the risk of cracking and spalling. FMK & SMK bricks provide a balanced combination of slag resistance, thermal shock tolerance, and structural stability to support long-term wall performance.
Roof
The roof experiences concentrated thermal stress, high-temperature fume impingement, and frequent temperature fluctuations, which may lead to cracking or localized overburn. MRL applies DMK & SMK materials to enhance high-temperature strength and resistance to thermal stress accumulation in the roof area.
Bottom
The furnace bottom operates under high thermal load from molten copper, slag accumulation, and mechanical impact, requiring strong load-bearing and erosion resistance. FMK series materials are used to reinforce bottom structure integrity and extend service life under combined thermal and mechanical stress.
Safety Lining
As the final protective barrier, the safety lining must ensure reliable insulation and structural stability to prevent heat transfer and shell damage. MRL standardizes the use of DMK series bricks to form a stable insulating layer that safeguards the furnace shell throughout long-term operation.
Based on service conditions, MRL selects different grades and formulations even within the same series to ensure optimal performance by zone. Custom solutions are available—contact us for tailored support.