Mud-cast prefabricated parts

The mud sleeve prefabricates are refractory components pre-molded from mud-sleeve material, designed primarily for the rapid installation and replacement of blast furnace tap-hole mud sleeves. Produced via an industrialized manufacturing process, these prefabricates transform traditional on-site construction into "assembly-based" operations, offering an efficient solution for refractory maintenance at blast furnace tap holes—especially ideal for smelting environments that prioritize high productivity and minimal downtime. They effectively address issues such as tap-hole spatter and excessive gas flames in the tap-hole area.

Mud-on-mud

Mud sleeve material is a refractory used for constructing or repairing the mud sleeves at blast furnace iron tapping openings. It boasts excellent bonding properties and high strength. Using the ramming device of a mud gun, the material is compacted onto the tap frame to form the mud sleeve, ensuring a tight fit between the gun head and the sleeve during plugging. This prevents mud leakage during the clogging process while simultaneously protecting the refractory lining of the tap opening from high-temperature oxidation and erosion by molten slag and iron.

Iron Mouth Castable

Specifically, the iron tap channel castable is an unshaped refractory material designed for use in blast furnace iron-tap channels. It is primarily employed to construct the tap channel and surrounding refractory structures, which are subjected to conditions such as alternating thermal cycles, significant temperature gradients, and frequent mechanical impacts from opening and closing the tap. This product helps extend the service life of the tap channel, reduces the risk of gas leakage, effectively controls iron spattering, and ensures the continuous and safe operation of the blast furnace's iron-discharging process.

Mud-Set Ramming Material

By compacting and ramming, a strong, dense mud-casing structure is formed, serving the same purpose as mud-casting material.

Mud-mold casting material

The mud sleeve castable is an unshaped refractory material used for constructing and repairing the mud sleeves at blast furnace tapping holes. It is specifically designed to withstand the frequent impact of opening and closing the tap, offering exceptional strength and excellent resistance to erosion. This material is essential for both the fabrication and maintenance of mud sleeves at blast furnace tapping points, helping to minimize mud leakage while ensuring safe and reliable plugging operations.

Inject the slurry

In-furnace repair mortar is an unshaped refractory material used for lining repairs in thermal equipment such as blast furnaces. It is applied by injecting the slurry into cracks or damaged areas using a mud pump, effectively filling, sealing, and restoring the affected zones. This material is characterized by its excellent fluidity, allowing it to penetrate even tiny fissures, while also exhibiting strong adhesion to substrates like refractory bricks and castables. Additionally, it boasts superior resistance to high temperatures and corrosion. Commonly employed for repairing equipment such as blast furnaces, hot-blast stoves, and rotary kilns, this mortar helps extend equipment lifespan and significantly reduces downtime for furnace maintenance and inspections.

Resin-based plugging material

Zhengzhou Kexin Refractory Materials Co., Ltd.'s resin-based ramming mass is manufactured using a proprietary resin binder developed in-house. This product boasts excellent plasticity, smooth application, precise iron tap depth, moderate opening strength, and low consumption per ton of iron produced. It has not only demonstrated outstanding performance in overseas blast furnaces but has also earned high praise from customers using single-tap and continuous-tap blast furnaces domestically—offering exceptional value for money.

Eco-friendly gunning material

This product features a binder and admixtures developed with independent intellectual property rights, ensuring that the anhydrous gunning material produces no harmful substances detrimental to human health during use. Developed by Zhengzhou Kexin Refractory Materials Co., Ltd., this environmentally friendly gunning material boasts domestically leading technology and has been rigorously tested in numerous blast furnaces both domestically and internationally. It not only meets—yet exceeds—Europe’s and America’s stringent environmental standards but also delivers exceptional performance: smooth application, rapid coke-solidification, superior tap-hole quality, high bonding strength, and complete safety for workers’ health.

Vanadium-Titanium Mud

Zhengzhou Kexin Refractory Materials Co., Ltd.'s vanadium-titanium mud contains special, highly effective additives that more effectively protect the refractory materials in the iron tap area during the later stages of blast furnace campaign life, forming a stable mud pack while reducing temperatures in the tap region. This ensures the safe and long-lasting operation of the blast furnace, aligning with industry goals for enhanced durability. The product has been successfully implemented across multiple medium- to large-scale blast furnaces, resulting in a significant increase in the qualification rate of iron taps and a noticeable drop in refractory temperatures within the tap area—providing robust assurance for the safe and reliable operation of these critical systems.

Iron Mouth Repair Clay Gun

The maintenance of the blast furnace tap hole directly impacts the furnace's productivity, operational efficiency, safety, and longevity—making it a critical component in modern blast furnace operations. Addressing the challenges of difficult tap-hole maintenance during both high-melting operations and the later stages of furnace campaigns, Zhengzhou Kexin Furnace Materials Co., Ltd. has developed a new type of repair mud by incorporating innovative additives, introducing spherical ultrafine powders, and optimizing the structure of the gunning material. This product offers significant advantages in restoring and stabilizing tap holes, easily forming a robust mud pack that effectively protects the furnace wall, thereby enhancing the qualified rate of tap-hole depth. It also boasts features such as easy opening, stable tap-hole depth, and extended iron-flow duration.

Splash-proof gunning material

Blast furnace tuyere spouting has long been a persistent and challenging issue plaguing ironmaking production for many years. Zhengzhou Kexin Furnace Materials Co., Ltd., in collaboration with the blast furnace’s design institute, construction teams, and leading ironmaking experts, has developed a unique and highly effective product and solution package. This includes insights into the root causes of spouting, the specific locations where it occurs, as well as the underlying principles and comprehensive measures for addressing this problem. Building on this robust theoretical foundation, Zhengzhou Kexin Furnace Materials Co., Ltd. has successfully created its anti-spouting gunning mix—developed specifically based on real-world experiences gained from nearly two dozen blast furnaces. The company can now tailor, design, and produce customized anti-spouting gunning mixes to suit the unique conditions of each blast furnace, ensuring precise treatment that delivers rapid and tangible results.

High-Strength Gun泥

The blast furnace smelting intensity has been steadily increasing, leading to new challenges in the tap hole area, such as high temperatures, severe erosion, and intense scouring. As a result, traditional furnace muds can no longer effectively maintain stable tap hole depth, ensure clean slag and iron discharge, or prevent accelerated damage to refractory materials in the tap zone. To address these issues, Zhengzhou Kexin Furnace Materials Co., Ltd. has developed a cutting-edge solution by carefully selecting high-quality, stable raw materials, scientifically optimizing the formulation, incorporating innovative ingredients, and creating a novel high-temperature, high-strength bonding phase. The company’s newly developed high-strength, anhydrous furnace mud boasts exceptional performance, including stable tap hole depth, smooth opening, extended tapping intervals, and remarkably low consumption rates—just 0.1 ton of mud per ton of iron produced.

Waterless gunning material

Used to seal the iron tapping hole of blast furnaces, it plays an indispensable role in ensuring high and stable furnace productivity, improving labor intensity and working conditions at the furnace front, extending the service life of the blast furnace, and achieving cost reduction, efficiency gains, and sustainable, low-carbon operations. Zhengzhou Kexin Furnace Materials Co., Ltd. can design customized water-free gunning materials tailored to specific user requirements—such as furnace capacity, operational practices, and technical specifications—to better meet customer needs and maximize value creation for clients. Zhengzhou Kexin Furnace Materials Co.'s water-free gunning materials boast exceptional features, including smooth gunning performance, excellent filling properties, robust maintenance capabilities for the iron tap hole, minimal risk of tap-hole breakage, leakage, or seepage, easy opening, superior resistance to erosion, steady iron flow during tapping, stable tap-hole conditions, and significantly improved furnace-front environments and reduced labor intensity.