The refractories of ferroalloy electric furnace include three parts: furnace roof refractories, furnace wall refractories and melt pool refractories (furnace slope and bottom). In the process of ferroalloy smelting, different parts of the refractories are in different working conditions. Furnace top refractories are mainly subject to the erosion and impact of high temperature furnace gas …

Electric furnaces refractories often used in the production of ferroalloys Read More »

Cause analysis 1. The red fire at the roof expansion jointsFurnace top expansion joints in the red fire in the transverse and longitudinal expansion joints, basically along the direction of the expansion joints in a line. Furnace top pouring construction, expansion joint plate is generally blocked with wooden square, wooden square end size 100mm × …

Heating furnace roof anchoring brick redness and corrective measures Read More »

Heating furnace refractory function Heating furnaces are divided into continuous heating furnaces, pusher heating furnaces, regenerative heating furnaces and roller bottom heating furnaces. According to the different conditions of heating capacity, material grade and material shape, the appropriate heating furnace type is selected. The heating furnace used for metal heat treatment is also called a …

Long life solution for heating furnace lining refractory materials Read More »

Medium frequency furnace use process, the thickness of the refractory material used for the furnace lining is only 70-110mm, the inner side of the contact with the high temperature metal liquid, the outer side of the water-cooled coils close to the refractory material inside and outside temperature difference is very large, in the use of …

How to improve the life of medium frequency furnace lining Read More »

Converter steelmaking is currently one of the most widely used steel production methods globally. It has become the mainstream approach due to its high efficiency, short smelting cycle, low production costs, and adaptability to various steel grades. Statistics show that converter steelmaking accounts for over 70% of the world’s total crude steel production. In China, …

Analysis of the types of converter steelmaking and the damage mechanism of the refractory lining used Read More »

Types of refractory bricks Currently, the most common classification of refractories is the chemical composition classification, which can be divided into silica, aluminosilicate, magnesium, dolomite and carbon composite refractories. 1.Silica Refractories Silica refractory is a refractory material with SiO₂ as the main component and SiO₂ mass fraction not less than 93%, which can be either …

What refractories are used in crude copper smelting side blowing furnace Read More »

Continuous casting intermediate ladle is one of the key equipments in continuous casting process, which has the function of stabilizing and diverting the flow, and plays a very important role in the continuous casting operation and assuring the quality of molten steel. The stable pouring of the intermediate package is conducive to prolonging the residence …

Several measures to effectively improve the service life of continuous casting tundish Read More »

At present, there are 3 billet continuous casting machines, the varieties cover common building materials and industrial wire rod, compared with similar domestic steel mills, billet intermediate packages of refractory material exists in the intermediate package of low age, refractory accidents, etc., which has a greater impact on the production and quality stability. With the …

Configuration and construction method of refractories for intermediate package of billet continuous casting Read More »

The composition of refractory materials in the tundish and the refractory damage problems that occur in daily work are analyzed one by one from the aspects of refractory design, use and management, the causes are found and solutions are proposed to ensure the safe use of refractory materials. In continuous casting operations, the tundish is …

Use and management of tundish refractory materials Read More »

Induction furnace is the use of electromagnetic field induction principle of electrical energy into heat, so that the metal charge heat melting equipment, according to the structure is divided into core induction furnace and coreless induction furnace two categories. Coreless induction furnace has the advantages of high efficiency, energy saving, low pollution, easy to adjust …

Selection and technological advancement of refractory materials for coreless induction furnaces Read More »

1.Definition and Characteristics of Unshaped Refractories Indeterminate refractories do not have a complex firing process, the production of raw materials required for easy access, low prices, production process is simple; plasticity is very strong, indeterminate refractory refractoriness and chemical stability can reach the level of similar refractory bricks, easy to prefabricated into a block, easy …

Exploration on the application and development of indeterminate refractories in metallurgical industry Read More »

Speaking of refractory bricks, for those who are not familiar with the refractory industry, think that refractory bricks are only square, but do not know that there are many kinds of refractory bricks. From the refractory brick material, the most commonly used refractory bricks are: clay bricks, high alumina bricks, lightweight clay bricks, lightweight high …

The most commonly used types of refractory bricks product Read More »

Many people buy refractory castables but do not know how to construct them in a standardized manner (see the refractory castable construction standards for details), what procedures are involved, and what details should be paid attention to during construction. As a result, the refractory castables have a short service life and often have problems. If …

Refractory castables construction technology and construction steps Read More »

The material system, construction method and performance of hot patch, spray patch, grout and hand thrown material for the maintenance of different areas of the converter are summarized, the selection of refractory materials for the maintenance of the converter, the consumption ratio and its correlation with the working conditions of the converter are analyzed, and …

Application technology of refractory materials for converter maintenance Read More »

Alkaline magnesium refractories characteristics and application prospects Basic magnesium refractories play an important role in the industrial field with their unique characteristics. High-temperature stability is one of their distinctive features, which enables them to maintain structural stability in high-temperature environments and is less susceptible to thermal shock and chemical erosion. Secondly, alkaline magnesium refractories have …

Research on recycling and resource utilization technology of refractory brick materials Read More »

According to different working environments, the furnace wall can be divided into ordinary furnace wall area, slag line area and hot spot area. Furnace wall is often subjected to high temperature effect and the impact of rapid temperature changes, but also by the direct scouring of liquid steel, slag chemical erosion, as well as mechanical …

3 technical measures to increase the service life of electric furnaces Read More »

Refractory furnace lining, an important component of crucible-type induction furnaces, affects the melting function of the furnace, the metallurgical quality of the steel, and, especially critical, the safety of the operation. As crucible type induction furnace is suitable for melting various casting alloys, such as cast iron, cast steel, copper alloy, aluminum alloy and zinc …

Multi-angle interpretation of electric furnace 5 types of refractories Read More »

Production of refractories for alumina (1) Refractories for rotary kiln. Rotary kiln is divided into pre-tropical, firing belt and cooling belt. Firing belt working temperature is not higher than 1200 ℃, kiln insulation layer structure for the first by the furnace shell laying a layer of refractory fiber felt, and then with diatomaceous earth bricks, …

Application of refractory materials in the non-ferrous metallurgical industry Read More »

Converter is an important equipment for steel making, it is a kind of steel making furnace which does not need external heat source and mainly takes hot pig iron, scrap steel and iron alloy as raw material. According to the nature of the lining refractory material is divided into acid converter and alkaline converter, according …

Technological advances in refractories for steelmaking converters Read More »