Kerui News

Last Updated: 2025-03-07 Zhengzhou Kerui (Group) Refractory Co., Ltd (“we”, “our”, or “us”) values your privacy. This policy explains how we collect, use, and protect your personal information when you use our website [https://www.krefractory.com]. 1. Information We Collect 2. Use of InformationWe use collected information to: 3. Data SharingWe may share information with: 4. Your RightsYou may: 5. Data SecurityWe implement SSL encryption, access controls, and regular security audits. However, no internet transmission is 100% secure. 6. CookiesWe use functional, analytical, and advertising cookies. Manage preferences through your browser settings. 7. Policy UpdatesChanges will be posted on this page. Continued use constitutes acceptance of revised terms. Contact UsFor privacy-related inquiries:Email: info@krefractory.comAddress: Chaohua Refractory Industry Zone, Xinmi City, Henan Province, China Note: This is a general template. Consult legal counsel to ensure compliance with GDPR, CCPA, and other applicable regulations based on your specific operations.

When it comes to high-temperature industrial environments, choosing high-quality refractory materials is critical. Kerui has always been committed to providing excellent refractory products to meet the needs of its customers. So Ulanqab Customer chooses first-level high alumina bricks, second-level high alumina bricks, and corundum castable phosphate Fire clay from Kerui Refractory for their silicomanganese Furnace. Kerui is not only committed to providing high-quality refractory products but also focuses on close cooperation with customers. The company works with customers to understand their specific needs and application environments to provide customized solutions. This collaborative approach ensures accurate selection and successful application of products, helping customers improve production efficiency, extend equipment life, and reduce maintenance costs. As a company with extensive experience in the refractory industry, Kerui Refractory continuously pursues innovation and technological advancement. They have advanced production equipment and laboratory facilities to ensure product consistency and reliability through strict quality control and testing procedures. In addition, Kerui Refractory is also actively developing new refractory materials to meet changing market demands and environmental requirements. In short, Kerui Company has won the trust and praise of customers in Ulanqab and other regions by providing high-quality refractory products and excellent customer service. They have not only…

In the morning of July 12, many employees were orderly debugging the equipment under the leadership of the commercial director Yan. Today is the day that Russian customers open remote video inspection work. In May 2022, KRNC received the first order from the Russian customer. Now the first batch of goods has been produced and successfully delivered. The customer is very satisfied after receiving the goods. At the same time, the customer also expressed his willingness to strengthen in-depth cooperation. The customer then sent a second purchase order for refractory materials. This video factory inspection is the customer’s intention to deepen the in-depth understanding of KRNC . Usually, before the production of refractory bricks, customers will visit the factory to test the strength of the factory. However, due to the epidemic, the Russian customer could not come to the site to inspect the factory in person. KRNC staff actively communicated with the customer and decided to start the video factory inspection. KRNC leaders gave great importance to this factory inspection. On the morning of July 12, employees arrived at the plant early to conduct a video interview with the customer and officially begin the inspection work. According to the customer’s request,…

Magnesia-alumina spinel sand. Magnesium-aluminum spinel chemical formula MgAl2O4 or MgO-Al2O3, theoretical content ω(MgO) = 28.3%, ω(Al2O3) = 71.7%. Natural magnesia-alumina spinel is rarely found, and all of the industrial applications are synthetic products. Magnesia alumina spinel has good resistance to erosion, abrasion and good thermal shock stability. According to the synthesis method is divided into sintering method and electrofusion method.The melting point of MgAl spinel solid solution is 2135℃. Due to the reaction of MgO and Al2O3 to form spinel, there is about 5% to 8% volume expansion, which poses some difficulties to the densification of Mg-Al spinel synthesis process. The synthesis of Mg-Al spinel belongs to the solid phase reaction, which can be seen as the oxygen ions of larger radius do compact accumulation, while the smaller radius Mg and Al ions diffuse each other in the framework of fixed oxygen ion compact accumulation.(1) Sintered magnesia-alumina spinel sand.Sintered synthetic spinel is usually high purity lightly burned MgO (impurity mass fraction less than 3%) and industrial alumina or alumina mixed grinding, balling, into high temperature rotary kiln or inverted flame kiln calcination. Mostly used in the preparation of cement kiln with magnesite a spinel brick. The following table shows the…

1. Hot blast furnace lining structure distribution. (1) Vault using vertical hanging chain line structure. Vault and hot blast furnace wall lining is not connected, the whole is supported by the inner wall of the furnace shell support metal bracket layered bracket. Sliding joints are provided between the vault lining and the furnace wall lining to prevent the destruction of refractory caused by friction between the furnace wall lining and the vault lining due to relative displacement. High temperature internal burning type vault lining refractory brick using plate structure, can abate the thermal expansion of the vault masonry, eliminate the thermal stress damage caused by the temperature difference between the upper and lower. (2) “Eye” shaped combustion chamber liner structure. Combustion chamber in the hot air furnace and large wall separation. Set sliding joints using sliding structure, the masonry around the combustion chamber is divided into multiple sections, each section of the masonry can be free to expand. (3) Self-supporting combustion chamber diaphragm wall structure. The partition wall adopts the combined self-supporting structure. Sealed high-temperature resistant steel plate is set inside to strengthen its sealing. With heat insulation, sealing, sliding and other purposes. Refractory materials for each temperature zone of…

As the main component of the indefinite refractory, the amount of refractory aggregate is generally 60%-73%, and the amount of refractory powder is 15-40%, both of which have a significant impact on the performance of the indefinite refractory. So what are the commonly used raw materials for refractories? 1. Bauxite clinker Bauxite clinker is made of bauxite ore after high temperature calcination, and its Al2O3content is generally more than 50%. In the unshaped refractory materials, it is common to process bauxite into refractory aggregate and powder. In important parts or parts in direct contact with the hot work equipment of steel and iron, high quality high alumina bauxite clinker should be chosen as refractory aggregate and powder. 2.Layey raw materials Clay materials and refractory clay, divided into hard clay and soft clay and semi-soft clay. Hard clay is mostly kaolinite single mineral type precipitated clay, generally need to be calcined into clay clinker before use. Clay clinker is also known as coke clinker. In unshaped refractories, clay clinker is generally used only as a refractory aggregate. Soft clays are mainly kaolinite-type clays, which are easily dispersed in water, have high plasticity and adhesion, and have good sinterability at high temperatures. Soft…

Unshaped refractories are a mixture of refractory aggregates and powders, binding agents or other admixtures in a certain ratio. It can be used directly or with appropriate liquid blending. This is a new type of refractory material without firing, its refractoriness is not less than 1580 ℃. There are various ways to classify unshaped refractory materials. Classification by chemical character: acidic, neutral, alkaline. Classification by delivery status: shaped products and bulk materials. From a practical point of view, they are generally classified by bonding agent type, refractory aggregate variety and construction production method. Classification according to the type of binding agent There are more types of binding agents, divided into inorganic binding agents and organic binding agents. In addition, inorganic binding agent is divided into cement, chemical, clay and other varieties, the application is very common. Binding agent     Unshaped refractory materials   Type   Examples of materials Cement formation Hardening conditions Inorganic Cement Silicate cement, aluminate cement   hydrated hydraulic hardness   Chemical   Water glass, phosphoric acid, aluminum phosphate, aluminum sulfate, brine  Chemical, polymerization Air hardness Hot hardness   Clay Soft clay   Coalescence, hydration  Air hardness Hot hardness   Superfine powder Activated silicon oxide, aluminum oxide…

1. Masonry process of fire escape wall bricks. (1) Construction preparation: 1) The quantity and quality of refractory materials should be checked in strict accordance with the design requirements before entering. After entering the site, use the crane to lift to the construction area in batches. 2) Pull out the longitudinal and horizontal centerline and horizontal elevation line of the furnace body and mark it out, and verify again before construction to confirm that it is qualified. 3) Level the bottom of the furnace, using 425 cement 1:2.5 (weight ratio) cement mortar for leveling. To cement mortar solidification, according to the center line of the furnace chamber and the center line of the cross wall, pull out the refractory brick masonry masonry line. After checking that the dimensions meet the design requirements, start masonry. (2) Construction of furnace bottom masonry. 1)Lower furnace bottom construction: first use clay standard bricks longitudinally in the furnace bottom to build brick piers, and then use castable prefabricated blocks on its upper surface to cover it, so that it becomes a hollow furnace bottom. 2) furnace bottom insulation layer construction: 1 to 5 layers of masonry body density of 0.7g/cm diatomaceous earth insulation refractory bricks,…

A blast furnace is an iron-making facility. Iron ore and coke are mixed into the blast furnace from the top of the furnace in proportion. At the lower air outlet, high temperature blast air (1000~1200℃) enters the blast furnace, and the redox reaction takes place inside the blast furnace to produce iron slag. The iron containing slag flows out from the lower iron opening of the blast furnace, separating iron and slag. Slag into the slag ditch, flushing water slag into the dry slag pit. The iron is either used to continue steel making or sent to the iron casting machine. Finally, the blast furnace gas is discharged through the de-dusting equipment. This is the whole process of blast furnace iron making. With the development and progress of the steel industry in various countries, blast furnaces are gradually becoming larger, more efficient and longer-lived. For the refractory materials used in blast furnace lining also put forward higher requirements. For example, good refractoriness, high temperature stability, density, thermal conductivity, wear resistance and slag resistance, etc. At present, there are many varieties of refractory materials used in blast furnaces, and the refractory materials used in each part are not the same due…

Many places in China are deeply affected by the epidemic, and all industries are facing the risk of survival difficulties after resuming work and production. In such a severe environment, our company calmly deals with all kinds of challenges and actively responds to the “Belt and Road” initiative, looking for opportunities to develop overseas markets. Finally, after continuous efforts, we have successfully obtained orders for refractory materials production from Russian aluminum industry and become its product supplier in China. 1、Seize the opportunity to explore the international market KRNC was established in 2004, is a comprehensive group enterprise integrating refractory material production, sales, product technology solutions and project turnkey services. After more than ten years’ development, our sales network has spread all over the domestic market and our products are exported to overseas. We learned that a branch company of Russian Aluminum needed to find a new supplier of resistant materials for a new furnace project. After nearly 3 months of communication and negotiation, our company finally got the order. Now, the first batch of products have been produced and successfully shipped to Russia. Focus on scientific and technological innovation to enhance product value Since its establishment, KRNC has paid great…

Recently the ecological and environmental departments informed the upcoming one of air pollution, the radiation range includes most of the region of Tianjin, Beijing and Hebei, all of Henan, most of Shandong, Jiangsu, northern Anhui and other parts of the city. According to the circular issued by the ecological and environmental departments, the government requested the implementation of emission reduction measures around the country as soon as possible to alleviate the impact of pollution, according to the actual local situation, to protect the health of the people. Then the Henan Provincial Pollution Prevention and Control Office published the “Notice on the Launch of Orange and Higher Warnings for Heavy Pollution Weather in the Province”. The notice requires each city to immediately start the heavy pollution weather orange and above level of warning, combined with the local air environment monitoring, industrial sources (except livelihood-related protection enterprises), dust sources, mobile sources of pollution to strengthen control. For iron and steel, thermal power, building materials, non-ferrous, chemical, mining and other large transport vehicle enterprises (more than 10 vehicles in and out per day), according to the requirements, priority arrangements for rail transport, reduce the amount of road transport as well as the prohibition…

Recently, we received a call from a company in Vietnam that needed refractory bricks for furnace repair. The customer’s construction period was short and the delivery time was tight. After communicating with the customer, we arranged for a dedicated person to follow up the project in order to protect the customer’s schedule and construction quality. Our manager led the team to create the project proposal and prepare the required documents. The Vietnamese client had a very high opinion of our service. Three days after we received the inquiry from the client, we quickly confirmed the cooperation. Under the multiple pressures of epidemic prevention and control and production scheduling difficulties, our factory made production scheduling plans overnight to ensure the smooth implementation of the production plan. The factory carries out 24-hour production and at the same time arranges quality inspectors to control the whole production process to ensure product quality. The first batch of customized high alumina bricks has been successfully shipped to the customer’s site. Our company has really realized the shaped bricks to be ready in 7 days after receiving the order. Our high alumina bricks for hot blast furnace are made of local bauxite as raw material. At…