Refractory Bricks Manufacturer

With the progress of the steel industry in various countries in the world, the blast furnace is developing towards large-scale, high-efficiency and longevity. And gradually adopt new smelting technologies such as oxygen-enriched coal injection, high air temperature operation, high pressure furnace top and so on. The working conditions of the blast furnace lining have undergone major changes, and its service life has been reduced more, generally only 5 to 6 years. Especially in the lower part of the blast furnace body, furnace waist and furnace belly, the refractory lining’s service life is much shorter. In order to adapt to this development, refractory materials for blast furnaces have also undergone major changes. New long-life, high-efficiency refractory materials have been gradually applied, and the life of blast furnaces has gradually increased. Refractories Lining of Blast Furnace Refractory for lining of blast furnace The refractory materials commonly used in lini...

In the working lining of various kilns, the kiln mouth and coal injection nozzle of the new dry-process cement kiln are subject to strong high-temperature seismic erosion and serious wear and tear, and high-quality uncertain refractory materials are required. Generally, high temperature castable refractory for cement kiln contains corundum, mullite, andalusite, silicon carbide minerals. Next, several high temperature resistant components of high temperature castable refractory will be analyzed. High Quality H igh T emperature C astable R efractory Corundum C omponents Corundum is divided into sintered corundum and fused corundum. Among them, fused corundum is a product obtained by melting alumina or bauxite in an electric furnace and then cooling. The fused corundum has large grains, high density, low porosity and high hardness. The sintered corundum has small grains, many pores and small hardness, but it has good thermal shock resistance. Generally speaking, cor...

The Technical Development of EAF Steelmaking   has a history of about 100 years. Although always facing the challenges and competition of several other steelmaking methods, especially the impact of high-efficiency oxygen converter steelmaking, the proportion of steel production in electric arc furnace steel production in the world's total steel output continues to rise year by year. Electric arc furnace steelmaking relies on graphite electrodes to generate electric arc, which converts electric energy into thermal energy in the arc light. Steelmaking method of melting furnace charge and removing impurity components such as sulfur and phosphorus, and then adding required elements (such as carbon, nickel, manganese, etc.) to smelt various steels or alloys with different properties. Furnace temperature can be accurately controlled with electric energy heating, which produces less high-temperature exhaust gas, and the thermal efficiency of electric arc steelmaking fur...

Graphite electrodes are mainly divided into ordinary power graphite electrodes, high power graphite electrodes, impregnated graphite electrodes, high bulk graphite electrodes, and ultra high power graphite electrodes. Due to its thermal and electrical properties, it is widely used in various industries. The main uses of graphite electrodes are as follows.   Uses of Graphite Electrodes First, for electric arc steelmaking furnace Graphite electrodes are mainly used in electric furnace steelmaking. Electric furnace steelmaking uses graphite electrodes to introduce current into the furnace. A strong current generates an arc discharge through the gas at the lower end of the electrode, and uses the heat generated by the arc to perform smelting. According to the capacity of the electric furnace, graphite electrodes with different diameters are used. In order to make the electrodes continuously used, the electrodes are connected by electrode screw joints. Graphite electrod...

The mullite light brick has an AL2O3 content of 50% to 85%. It is a new type of high-quality thermal insulation and refractory material with mullite as the main crystal phase and the combined phase. Mullite Light Brick - RS Refractory Manufacturer Because mullite has excellent high temperature mechanical properties and chemical stability. Therefore, mullite lightweight bricks have excellent properties such as high-temperature structural strength, low high-temperature creep rate, small thermal expansion coefficient, strong chemical resistance and good thermal shock resistance. It can be used as the lining of the kiln working surface that directly contacts the flame, which can significantly improve the energy saving effect of the kiln. Characteristics of mullite light brick: 1. Low thermal conductivity and good thermal insulation effect; 2. Low hot melt. Due to the low thermal conductivity, the mullite series of light heat-insulating bricks accumulate little heat ene...

Mullite Bricks are high-aluminum refractory materials with mullite (3Al2O3 · 2SiO2) as the main crystal phase. Generally the alumina content is between 65% and 75%. In addition to mullite, those with lower alumina also contain a small amount of glass phase and cristobalite; those with higher alumina also contain a small amount of corundum. Contact RS .  Mullite brick  has a high fire resistance, which can reach above 1790 ° C. Load softening start temperature is 1600 ~ 1700 ℃ . The compressive strength at room temperature is 70 ～ 260MPa. Good thermal shock resistance. Mullite Brick for Sale in RS Refractory Manufacturer Classification of Mullite Bricks There are two types of mullite bricks, one is sintered mullite bricks and another is fused mullite bricks. The sintered mullite brick is made of high alumina bauxite clinker, and a small amount of clay or raw alumina is added as a binder, and then formed and fired. The fused mullite brick is made of high alu...

High-strength High-aluminum Castable  is a relatively common type of wear-resistant castable. It is based on high-quality corundum alumina and other aggregates and powders, and it is configured by adding a binder (heat-resistant stainless steel fiber) and an admixture. This wear-resistant castable has many excellent characteristics, such as good abrasion resistance, high thermal shock resistance, and stability at high temperature. For high-strength and high-aluminum castables, it is necessary to check whether the mold equipment is firm and reliable during the pouring construction. If slurry leakage or voids are found, the castables within the appropriate range should be removed in time and refilled.   Wear Resistant Castable High strength and high aluminum castable High-strength and high-aluminum castable has excellent corrosion resistance. Therefore, it can not only meet the requirements of corrosion prevention in the corrosive environment, but also meet the lo...