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High Erosion Resistant Taphole Clay: A Key Refractory Solution for Modern Blast Furnace Ironmaking
Low cement anhydrous taphole clay is an unshaped refractory material used to seal blast furnace tapholes. This material is forced into the taphole using a gunning machine, hence the name “gunning mix.” The raw materials used to produce high erosion resistant taphole clay include coke stone, micaceous shale, high-alumina bauxite, mullite, silicon carbide, corundum, and coke, among others.Advantages of innovative mud products Waterless cannon mud must possess excellent plasticity, adhesion, and...
During converter steelmaking, a large amount of molten steel slag is generated inside the furnace. However, the chemical composition of steel slag is complex, and the sulfur and phosphorus inclusions in the slag, in particular, have a significant impact on steel quality. When tapping the molten steel after the converter process is complete, the amount of slag flowing into the ladle with the molten steel must be strictly controlled. Typically, a converter slag stopper insertion cart is used to...
How Do Slag-Blocking Balls Prevent Slag from Entering the Ladle?
Slag-blocking balls are precast components cast into spherical shapes by mixing high-quality refractory materials, additives, binders, and an appropriate amount of ballast iron with water.During steel tapping from the converter, to prevent slag from flowing into the ladle along with the molten steel, slag-blocking balls—which have a specific gravity between that of molten steel and slag and a refractoriness of 1,790 degrees Celsius or higher—are typically dropped into the converter when...
On August 1, 2026, we will celebrate the 99th anniversary of the founding of the People’s Liberation Army. The peace and stability of our land stem from the soldiers who defend our vast territory with iron will; our industrial prosperity relies on metallurgists who forge high-quality alloys through relentless refinement. On this August 1st Army Day, all employees of our company extend our highest respect to all the soldiers of the people!
The core use of slag washing material
Metallurgical slag washing materialSlag washing flux is a synthetic slag material mainly composed of calcium aluminate. During steelmaking, Slag Washing Material is added to the ladle and melted by the steel flow to achieve deoxidation, desulfurization, and removal of inclusions as refining auxiliary materials outside the furnace.Ladle cleaning synthetic slagSlag washing material can deeply desulfurize: during steelmaking, it is washed away by the steel flow, and emulsion stirring greatly...
Application & Operation of Waterless Cannon Mud
After iron tapping is complete, an anhydrous gunning tool must be used to inject taphole plugging clay into the tap hole. The newly injected high performance taphole clay will bond with the old gunning clay remaining in the tap hole. In the high-temperature environment of the blast furnace, as soon as the leading edge of the injected high temperature taphole clay comes into contact with the incandescent molten iron and slag inside the furnace, its surface rapidly sintered, forming a “hard...
Columnar Graphite Carbon Raiser for Steelmaking
Graphitic Columnar AdditivesLow ash column graphite carburizer is categorized as one of the High Performance Additives featuring high fixed carbon, low sulfur and low nitrogen content, with smooth cylindrical pellets. High fixed carbon graphite column carburizer compensates carbon loss during steelmaking and casting, and accelerates graphitization, enabling finished steel and castings to achieve ideal tensile strength, wear resistance and toughness.98% carbon columnar graphite pelletsFixed...
The function of a slag blocking hammer
During the steelmaking process, when molten steel flows out, vortices can easily form, causing slag to flow into the ladle along with the molten steel. This increases the amount of inclusions in the molten steel, and the slag adheres to the inside of the ladle, shortening its service life. The steel furnace slag dart addresses this issue.The slag retention dart effectively prevents slag from flowing into the ladle with the molten steel, thereby improving the purity of the molten steel. It...
High strength waterless taphole clay and wet gunning mortar
Waterless cannon mud contains virtually no free water, and its aggregates consist of silicon carbide, corundum, silicon nitride, and other materials. Because it contains no water, Eco-friendly mud solutions does not generate water vapor, eliminating the risks of splashing and damp gunning ports. When used in the workshop, innovative mud products produces minimal dust and smoke, meets environmental protection requirements, and improves the working environment for employees. Low smoke...
Working Flow and Operating Principle of Ladle Slag Blocking
During the final stage of steel tapping, the slag blocking can remain suspended at the steel-slag interface; when the molten steel has completely drained, it precisely seals the tapping nozzle, suppressing eddy currents that entrain slag, resulting in highly efficient slag containment. Pre-tapping Preparations Equipment Inspection: Verify that the slag stopper cart (robotic arm), hydraulic/servo systems, position encoders, and grippers are in good working order. High-quality slag products...
Working Flow and Operating Principle of industrial slag blocking
High-Quality slag products, commonly known as a slag hammer, slag blocking, or slag cone, is a product used during steel tapping in the converter steelmaking process. The industrial slag blocking consists of a gyroscope-shaped refractory hammer head and a long refractory guide rod. The surface of the slag-blocking plug’s gyroscopic hammer head features three angular steel-tapping grooves. It is designed to withstand high temperatures and resist erosion by molten steel. The density of the...
Scope of application of silicon carbide
Metallurgical silicon carbide (SiC), commonly known as diamond sand, is a type of industrial silicon carbide that comes in black and green colors. Widely used in metallurgy, abrasives and grinding tools, refractory materials, semiconductors, ceramics, new energy and other fields. Metallurgical industry Abrasive grade silicon carbide has the functions of increasing silicon, increasing carbon, and reducing oxygen. Compared with traditional carbonization agents, ferrosilicon, and deoxidizers,...
Introduction to black silicon carbide Metallurgical silicon carbide, commonly known as diamond sand, is synthesized artificially in industry. The naturally occurring silicon carbide, commonly known as moissanite, is rare in nature and difficult to develop. Artificially synthesized silicon carbide is produced by reacting quartz sand and carbon source at high temperatures above 2000 degrees Celsius. From the perspective of appearance and purity, it can be divided into two categories: black...
The new ball pressing process makes silicon carbon alloy balls the preferred choice for steelmaking
After adding silicon carbon powder to molten steel, it will float on the surface and accumulate dust, causing an unfriendly operating environment and incomplete reaction. In order to solve such problems, the ball pressing process has emerged, which compresses powdered materials into spherical shapes and then air dries or dries them to obtain silicon carbon alloy ball. This greatly improves the convenience of feeding. The metallurgical silicon carbon ball sinks to the bottom of the molten steel,...
Silicon carbon alloy balls assist steel mills in low-cost quality improvement and transformation
Since April or May 2026, the domestic steelmaking industry has continued to promote low-cost upgrading and transformation, leading to an increase in demand for silicon carbon alloys in the market. The current price of silicon carbon alloy balls is relatively stable, and compared with traditional silicon iron, the cost is reduced. Widely used in major steel mills, it has become the mainstream auxiliary material for deoxidation and alloying in converter steelmaking. With the popularization of new...
By 2025, the market size of environmentally friendly waterless cannon mud in China will reach 412 million US dollars, a year-on-year increase of 5.3%; It is expected to increase to $434 million by 2026, with a growth rate of over 5%. 1. The ultra-low emission transformation has come to an end, forcing an upgrade: The Ministry of Industry and Information Technology has clarified that by the end of 2026, key areas of steel will have basically achieved ultra-low emissions. Traditional tar based...
Slag Separation Tools: Application of Slag Stopping Hammer & Slag Stopping Ball
A slag blocking cone is a refractory product similar to a cone with a smaller diameter tilting rod, and has three steel tapping grooves. By using slag blocking cones, the composition of molten steel can be stabilized, the phenomenon of phosphorus recovery in molten steel can be reduced, the quality of molten steel can be improved, the absorption rate of alloy elements can be increased, and the consumption of refractory materials can be reduced. Therefore, slag blocking cones are very...
Core wire originated in the 1980s as an external refining technology developed from jet metallurgy. The original technology was to throw alloy blocks into steel and molten iron, sprinkle powder, and remove impurities from the steel, which could lead to problems such as high burning loss and low alloy recovery rate. The dust is large and does not meet the national environmental standards. Workers are required to operate it ,There are safety hazards in the working environment. The reaction is...
High purity carbonization with precise empowerment
The raw material for graphitization columnar additive is high-quality petroleum coke. High temperature graphitization treatment above 2800 ℃ stabilizes the fixed carbon content at ≥ 95%. The sulfur and nitrogen content components are extremely low. It can regulate carbon elements for the metallurgical industry, quickly supplement the carbon content of molten steel, ensure the performance of steel meets standards, reduce porosity, cracks, etc. in steel production, and help the steel industry to...
Silicon calcium barium alloy is synthesized at high temperature by proportioning three core elements: silicon, calcium, and barium. Compared to traditional single materials such as silicon iron and silicon calcium, silicon calcium barium composite materials have better desulfurization and deoxidation effects, making the molten steel purer and reducing defects such as pores and cracks. Enhance the strength and toughness of steel. It can be used in conjunction with cored wire and graphitic...
Waterless Cannon Mud: High Plasticity & High Temperature Resistant for Modern Blast Furnace
The waterless cannon mud produced by our company is another main product launched after the slag blocking series products. This product has strong plasticity and is easy to operate. Uniform sintering, high temperature resistance, and resistance to erosion by molten iron, suitable for high-intensity and environmentally friendly operations in modern blast furnaces. During the use of waterless cannon mud, no harmful gases evaporate, improving the working environment and meeting industry...
Advanced slag blocking series technology empowers environmentally friendly smelting
Advanced slag blocking series technology empowers environmentally friendly smelting The slag blocking plug product launched by Henan Zhuangzhi Refractory Materials Co., Ltd. has the advantages of precise slag control, long service life, energy conservation and environmental protection. The gyro shaped structure used in the slag blocking plug, combined with the slag blocking rod, can form a physical barrier at the steel outlet, disrupt the eddy current of the molten steel, reduce slag...
Henan Zhuangzhi Metallurgical Refractory Materials Co., Ltd. is located in Donggaoping Industrial Park, Long'an District, Anyang City, with a superior geographical location and abundant raw material resources. The company covers an area of 6000 square meters, with fixed assets of over 10 million yuan and an annual output value of 120 million yuan. It currently has more than 200 employees, including over 60 professional and technical personnel. Our company currently specializes in...
High-efficiency purification of metal liquid by slagging agent
Product Introduction The slag forming agent of Henan Zhuangzhi Refractory Materials Co., Ltd. is designed specifically for high-temperature processes in the metallurgical industry. The product can form a slag layer within a certain period of time, quickly adsorb oxides and inclusions, and improve the purity of the metal. We specialize in environmentally friendly waterless taphole clay, slag blocking cones, slag blocking balls, slag blocking plugs and related slag retaining products. Equipped...