Industry News

Analysis of the reasons for steel leakage between ladle upper nozzle & slide plate and improvement methods

The ladle sliding spout consists of upper nozzle, upper slide plate, lower slide plate and lower nozzle, which is the channel for steel to enter the intermediate ladle from the ladle, and plays the role of sealing the steel flow and regulating the flow. Through the related technical improvement, the service life of ladle upper …

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What are the technical indicators to measure the performance of refractories?

1.Refractoriness When the refractory material is subjected to sufficient high temperature, it will gradually soften and melt into a viscous liquid. Therefore, refractoriness refers to the temperature at which a refractory material can resist high temperatures without melting. It is one of the main aspects of performance of refractory materials. The refractoriness is measured with …

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How to classify refractory materials as acid, alkali and neutral?

Our factory have three categories of refractory materials: Acid, Basic & Neutral. Apart from these we can classify refractories into few more categories like – Special refractories, Insulating Refractories, & Cermets. Refractory materials are non-metallic materials with refractoriness not less than 1580℃. Widely used in metallurgy, chemical industry, petroleum, machinery manufacturing, power and other industrial …

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Refractories used in reheating furnace

What are the refractories used in furnaces? Heat treatment temperature of the reheating furnace is not high, generally its service temperature is lower than 1300℃. For reheating furnace lining, usually we use Al-Si refractory materials which contains alumina 36-75%. The reheating furnace is used for bloom, continuous casting, small steel ingot to meet the temperature …

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Development of ladle lining refractory materials

20th Century 50–70 years, China’s steel plants mainly used aluminosilicate refractory materials, including clay, alumina brick and so on. Since the 1980s, China has successively developed the aluminum-magnesium carbon, coal quality calcium and magnesium and other several series of new steel package refractories. Wherein the aluminum-magnesium carbon refractory materials are of varieties, all specifications, is …

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