Monolithic Refractories for Iron and Steel Industry Gunning Mix for EAF
- Ref Price:
-
$553.11 - 676.03
/ m.t.
- Loading Port:
- China Main Port
- Payment Terms:
- TT or L/C
- Min Order Qty:
- 2 Mt m.t.
- Supply Capability:
- 5000 Tons Per Month m.t./month
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General Information of Gunning Mix for EAF
ALRE gunning mix for EAF which is made strickly according to international standard is known for its excellent corrosion and scouring resistance of iron steel, long operating life and easy execution and mending.
Technical data of Gunning Mix for EAF
Item | Gunning Mix for EAF | ||
Al2O3 | % | ≥ | — |
MgO | % | ≥ | 86 |
CaO | % | ≤ | — |
Bulk density （g/cm3）≥ | 110℃×24h | 2.2 | |
1600℃×3h | — | ||
C.C.S. (MPa) ≥ | 110℃×24h | 60 | |
1600℃×3h | — | ||
M.O.R.(MPa) ≥ | 110℃×24h | — | |
1600℃×3h | 4.0 | ||
Max. service temperature（℃） ≥ | |||
Refractoriness (℃) | — | ||
Grain size distribution (%) | <3mm,≥90 <1mm,≥35 <0.074mm,≥20 | ||
Linear change after heating (%) | 0.0～0.4 ﹙1500℃×3hrs﹚ | ||
Application | Used for slag zone gunning of EAF | ||
Production line and Tesing Room of Gunning Mix for EAF
Feature of Gunning Mix for EAF
Excellent abrasive resistance performance
Easy execution and mending
Excellent corrosion and scouring resistance of iron steel
Application of Gunning Mix for EAF
ALRE gunning mix for EAF could be used widely for slag zone of EAF.
- Q: How do monolithic refractories contribute to the overall productivity of iron and steel plants?
- Monolithic refractories play a crucial role in enhancing the overall productivity of iron and steel plants. These refractories are characterized by their ability to be shaped and installed without the need for joints or mortar, making them highly versatile and efficient. One major contribution of monolithic refractories to the productivity of iron and steel plants is their ability to withstand high temperatures. These refractories are designed to have excellent thermal shock resistance, meaning they can withstand rapid changes in temperature without cracking or breaking. This allows them to be used in various high-temperature applications such as blast furnaces, converters, and ladles. By using monolithic refractories in these critical areas, iron and steel plants can operate at higher temperatures, leading to increased production rates. The refractories provide effective insulation, reducing heat losses and improving energy efficiency. This results in cost savings and higher output for the plant. Furthermore, monolithic refractories are known for their excellent resistance to chemical attacks from molten metals and slags. They can withstand the corrosive effects of molten iron, steel, and other alloys, protecting the underlying structures and extending their lifespan. This reduces downtime for maintenance and repairs, allowing for continuous operation and higher productivity. Moreover, monolithic refractories offer easy installation and maintenance, which further contributes to productivity. Unlike traditional refractories that require time-consuming bricklaying and jointing, monolithic refractories can be sprayed, troweled, or pumped into place, saving both time and labor costs. Additionally, their ability to be easily repaired or replaced without major disruptions to the production processes ensures minimal downtime, maximizing overall plant productivity. In summary, monolithic refractories enhance the productivity of iron and steel plants by withstanding high temperatures, providing insulation and energy efficiency, resisting chemical attacks, and offering easy installation and maintenance. Their ability to perform under extreme conditions and their cost-effective nature make them an essential component in the iron and steel industry, contributing to increased output and profitability.
- Q: What are the challenges in recycling monolithic refractories?
- Recycling monolithic refractories presents several challenges that complicate the process compared to other materials. To begin with, the exceptional resistance of monolithic refractories to high temperatures and harsh conditions makes them difficult to break down and separate. Specialized techniques and equipment are required for this purpose. Furthermore, monolithic refractories often contain various additives and binders, such as clay, cement, and other organic compounds. These additional substances add complexity to the recycling process, as they may need to be removed or separated from the refractory material before effective recycling can take place. Moreover, monolithic refractories are prone to contamination during their service life, with metal oxides, slag, and impurities being common culprits. These contaminants can affect the quality and properties of the recycled refractory material, necessitating thorough cleaning and purification procedures. Additionally, the logistics involved in collecting and transporting monolithic refractories for recycling can be challenging. Given that refractories are typically used in large quantities in industrial settings, their removal and transportation can be costly and time-consuming. Furthermore, finding suitable recycling facilities equipped with the necessary expertise and equipment to handle monolithic refractories can be limited, particularly in certain regions. Lastly, economic factors contribute to the challenges of recycling monolithic refractories. The financial viability of recycling and processing these refractories may not always justify the cost compared to using new materials. Consequently, companies may be discouraged from investing in recycling programs, leading to lower demand for recycled refractory materials. In summary, the challenges associated with recycling monolithic refractories primarily arise from their durability, complex composition, contamination, logistics, and economic considerations. Nonetheless, with technological advancements and increased awareness of the environmental benefits of recycling, these challenges can be overcome, promoting the sustainable reuse of refractory materials.
- Q: What are the advancements in monolithic refractory technology for the iron and steel industry?
- There have been several advancements in monolithic refractory technology for the iron and steel industry. One significant advancement is the development of low-cement castables, which have improved high-temperature strength, thermal shock resistance, and erosion resistance compared to conventional castables. Another advancement is the introduction of ultra-low cement castables, which offer even higher strength and improved resistance to spalling and alkali attacks. Additionally, the use of advanced bonding systems and additives has led to the development of self-flowing castables, making installation easier and more efficient. These advancements have greatly improved the performance and longevity of refractory linings in iron and steel industry applications.
- Q: How do monolithic refractories withstand high temperatures in iron and steel production?
- Monolithic refractories, which are tailored for iron and steel production, have the capability to endure the formidable temperatures involved. Unlike traditional brick refractories that are built brick by brick, monolithic refractories are made from a single piece or material. The resilience of monolithic refractories against high temperatures is due to their distinctive composition and structure. They are crafted from top-notch raw materials, such as alumina, magnesia, silica, and carbon, which possess high melting points and exceptional heat resistance. To shape and strengthen the monolithic refractory, it is commonly mixed with a binder like clay or cement. This binder assists in binding the refractory particles together and provides the necessary structure to withstand thermal stresses. Moreover, the mixture can include various additives to further enhance the refractory properties. Throughout the iron and steel production process, monolithic refractories encounter extreme temperatures, rapid heating and cooling cycles, and chemical reactions with molten metals and slag. Nevertheless, the unique composition and structure of monolithic refractories enable them to withstand these harsh conditions. The high melting point materials utilized in monolithic refractories prevent them from melting or deforming under the intense heat of iron and steel production. These materials exhibit excellent thermal conductivity, effectively transferring heat away from hot surfaces and preventing overheating and damage. Furthermore, the binders and additives in monolithic refractories enhance their resistance to thermal shock, which arises from sudden temperature changes. This resistance is vital in iron and steel production since the refractories are frequently exposed to extreme temperature differentials. Lastly, the monolithic nature of these refractories eliminates the presence of joints and gaps commonly found in traditional brick refractories. The absence of joints minimizes the risk of heat leakage and infiltration of molten metal or slag, ensuring a more efficient and durable lining. In conclusion, monolithic refractories are specifically engineered to endure the high temperatures involved in iron and steel production. Their composition, structure, and unique properties enable them to withstand extreme heat, rapid temperature changes, chemical reactions, and thermal stresses, making them essential components in the manufacturing of iron and steel.
- Q: How are monolithic refractories repaired or replaced in iron and steel facilities?
- Monolithic refractories in iron and steel facilities are repaired or replaced through a process known as hot repair or hot gunning. This involves using specialized equipment to heat the damaged refractory material and remove it. The area is then prepared for new refractory installation, which is done by either shotcreting or gunning the new material onto the surface. This method allows for quick repairs and replacements, minimizing downtime and ensuring the efficiency and safety of the facility.
- Q: What types of monolithic refractories are commonly used in the iron and steel industry?
- Commonly used monolithic refractories in the iron and steel industry include castables, gunning mixes, and ramming mixes.
- Q: What are the common failure mechanisms of monolithic refractories?
- Monolithic refractories commonly fail due to thermal spalling, chemical attack, erosion, and mechanical stress. Thermal spalling arises from abrupt temperature changes, causing the refractory material to crack and break. This can result from thermal shock or cyclic heating and cooling. Chemical attack occurs when aggressive chemicals or gases interact with the refractory material, degrading its lining. This can lead to the formation of new compounds or the dissolution of the refractory material, weakening its structure and reducing its resistance to further chemical attack. Erosion is another prevalent failure mechanism, particularly in scenarios where the refractory lining is exposed to high-speed gas or liquid flows. The abrasive action of the medium can gradually erode the refractory material, causing thinning and eventual failure of the lining. Mechanical stress, such as thermal expansion or contraction mismatch, can also lead to failure in monolithic refractories. Rapid temperature changes can result in differential expansion or contraction, leading to the development of cracks and fractures in the lining. To mitigate these failure mechanisms, several techniques can be utilized. These include careful material selection based on operating conditions, meticulous design to minimize thermal gradients, application of protective coatings, and regular inspection and maintenance to promptly detect and address signs of failure or degradation.
- Q: What are the key considerations when selecting monolithic refractories for tundish applications?
- When selecting monolithic refractories for tundish applications, the key considerations include thermal stability, erosion and corrosion resistance, thermal shock resistance, ease of installation and maintenance, and cost-effectiveness.
- Q: How do monolithic refractories contribute to the safety of iron and steel plants?
- The safety of iron and steel plants heavily relies on monolithic refractories. These refractories are specifically designed to withstand the harsh conditions commonly encountered in these industrial settings, including high temperatures, chemical attacks, and mechanical stresses. By using monolithic refractories, iron and steel plants can enjoy the following benefits: 1. Thermal resistance: Monolithic refractories excel in resisting extreme temperatures, preventing heat loss and ensuring the efficient operation of equipment and systems. This thermal insulation contributes to plant safety by reducing the risk of overheating, which can lead to equipment failure or catastrophic accidents. 2. Chemical resistance: Iron and steel plants involve the use of various chemicals, such as molten metal, slag, and corrosive gases. Monolithic refractories exhibit high resistance to these aggressive chemical environments, preventing corrosion, erosion, and material degradation. This resistance ensures the integrity of refractory linings, reducing the risk of leaks, spills, and contamination that could endanger workers and the environment. 3. Structural stability: Monolithic refractories provide excellent mechanical strength, offering stability to furnace linings, ladles, and other equipment. This stability is crucial for the safe operation of iron and steel plants, minimizing the risk of structural failure, collapse, or damage caused by mechanical stresses or heavy loads. 4. Quick repair and maintenance: Monolithic refractories offer easy installation and repair compared to traditional brick refractories. They can be poured, gunned, or rammed in place, allowing for swift repairs and maintenance. This rapid response to refractory failures or damages contributes to plant safety by minimizing downtime and preventing potential hazards associated with equipment malfunction. 5. Flexibility and adaptability: Monolithic refractories can be tailored to meet the specific needs of iron and steel plants. They can be customized in terms of composition, density, thermal conductivity, and other properties, ensuring optimal performance under varying operating conditions. This adaptability ensures that refractory linings are well-suited for the plant's processes, reducing the likelihood of accidents caused by inadequate refractory materials. In conclusion, monolithic refractories enhance the safety of iron and steel plants by providing thermal resistance, chemical resistance, structural stability, rapid repair capabilities, and flexibility. By utilizing these refractories, iron and steel plants can maintain a safe working environment, minimize the risk of accidents, and ensure the reliable operation of their equipment and systems.
- Q: How are monolithic refractories manufactured?
- Manufacturing monolithic refractories is a specific process that consists of multiple steps. The initial step involves selecting and preparing raw materials, typically comprising aggregates, binders, and additives. Aggregates are chosen based on their chemical and physical properties, while binders are utilized to hold the aggregates together. Additives are incorporated to enhance specific properties of the refractory material. Once the raw materials are chosen, they are thoroughly mixed in precise proportions to create a uniform mixture. This mixture is then blended using different techniques such as dry or wet mixing, depending on the desired characteristics of the final product. Following the blending process, the subsequent step involves shaping the refractory material. This can be accomplished through various methods such as casting, gunning, ramming, or spraying. The selection of the method is based on the specific application and requirements of the refractory. After shaping, the refractory material undergoes a curing process. This entails drying the material at a controlled temperature to eliminate any excess moisture and promote the development of desired properties. Lastly, the cured refractory material is subjected to high temperatures in a kiln. This firing process further strengthens the refractory and enhances its ability to withstand heat and other harsh conditions. In summary, the manufacturing of monolithic refractories entails meticulous selection and preparation of raw materials, precise blending, shaping, curing, and firing procedures. This guarantees the production of superior-quality refractory materials capable of withstanding the extreme conditions encountered in various industrial applications.
We are an industrial enterprise of refractories integrating the scientific research, design, production and engineering service. With first-class quality of products, high-efficient and prompt after-sale service, our products are not only well sold in many domestic large steel enterprises and coking enterprises, but also widely exported to more than 23 countries and regions.
1. Manufacturer Overview
| Location | Henan, China |
| Year Established | 2007 |
| Annual Output Value | Above US$ 200 Million |
| Main Markets | North America;Asia;Western Europe;Africa;Russia;Middle East |
| Company Certifications | ISO 9001:2008 |
2. Manufacturer Certificates
| a) Certification Name | |
| Range | |
| Reference | |
| Validity Period |
3. Manufacturer Capability
| a) Trade Capacity | |
| Nearest Port | Tianjin |
| Export Percentage | 20% - 30% |
| No.of Employees in Trade Department | 10-20 People |
| Language Spoken: | English; Chinese |
| b) Factory Information | |
| Factory Size: | Above 150,000 square meters |
| No. of Production Lines | Above 10 |
| Contract Manufacturing | Installation guide, OEM Service Offered |
| Product Price Range | High; Average |
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Monolithic Refractories for Iron and Steel Industry Gunning Mix for EAF
- Ref Price:
-
$553.11 - 676.03
/ m.t.
- Loading Port:
- China Main Port
- Payment Terms:
- TT or L/C
- Min Order Qty:
- 2 Mt m.t.
- Supply Capability:
- 5000 Tons Per Month m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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