wanhaorefractory

Refractory brick is made of refractory clay or other refractory raw materials, it is in color light yellow or brown. Refractory brick is a kind of refractory materials with a certain shape and size. According to manufacture methods, it can be divided into sintering brick, non-sintering brick, fused cast brick, and refractory insulating brick; according to shape and size, it can be divided into standard brick, common brick, and special shape brick. Refractory bricks can be used as furnace building material and structural material for building furnaces and various thermal equipments, and it can withstand various physical and chemical changes and mechanical effects at very high temperatures. For example, refractory clay brick, high alumina brick, alumina carbon brick, magnesia brick, etc. Refractory brick is one of the most widely used products in refractories, and do you know its characteristics? 1. Chemical composition: The main components determine refractory bricks q...

During continuous casting, the   casting powder   is mostly used (together with submerge nozzle) except from casting billets with small section. Practice has proved that this process is one of the important conditions to ensure the quality and normal operation of casting billet. In the early 1970s, the process was successfully applied to slab continuous casting in our country and solved the problem of slab longitudinal crack, and then was gradually popularized and applied. In recent years, a series of protective slag has been established, Some special fluxes for continuous casting of special steel are developed, which provide necessary conditions for further development of continuous casting in China. There have many kinds of   refractory products in our factory. Function of   mold fluxes : 1 Insulation 2 Isolating air and preventing molten steel from oxidizing two times 3 Purify the slag interface and absorb the inclusions in molten steel 4 Lubricatio...

First, refractory production continued to decline. The refractory production in 2016 continued the downward trend in 2015, a decrease of 8.56%. The main reason for the decline in refractory production is the rapid and drastic reduction in the market demand for refractory materials for infrastructure projects.  From the output of different refractory products, silicon brick production decreased the most, as high as 37.59%; high alumina products and clay products were down more than 10%. Second, the export trade situation is grim. In 2016, the total export volume of refractory raw materials and products fell to its lowest level in the past five years, only 2.565 billion USD, down 11.62%, and a decrease of 765 million USD from the 3.33 billion USD, the highest point in 2014, down 22.97%. Third, the imports of refractory raw materials have increased. In 2016, the total imports amount of refractory raw materials and products is 324,900 tons, an incre...

Refractory brick is made of refractory clay or other refractory raw materials, it is in color light yellow or brown. Refractory brick is a kind of refractory materials with a certain shape and size. According to manufacture methods, it can be divided into sintering brick, non-sintering brick, fused cast brick, and refractory insulating brick; according to shape and size, it can be divided into standard brick, common brick, and special shape brick. Refractory firebricks can be used as furnace building material and structural material for building furnaces and various thermal equipments, and it can withstand various physical and chemical changes and mechanical effects at very high temperatures. For example, refractory clay brick, high alumina brick, alumina carbon brick, magnesia brick, etc. Refractory brick is one of the most widely used products in refractories, and do you know its characteristics? 1. Chemical composition: The main components determine refractory brick...

Brown fused alumina is based on bauxite, coke as the main raw material, then melting in the electric furnace with high temperature.The abrasive tools that made of brown fused alumina is suitable for grinding high tensile metal,like general steel,malleable cast iron, hard bronze, etc.,also can be used in making high grade refractory . Brown fused alumina is charactized with high purity,good crystallization,strong liquidity,lower linear expansion rate and erosion resistance. Application: 1.It is used to make high grade refractory ,castable, firebrick etc. 2.Sand blasting--moderate hardness, high packing density, no free silica, large density, good toughness, it is the ideal "environmental protection" type sandblasting materials. 3.Free grinding.It is general domestic high grade abrasive material that is used in the field of  image tube, optical glass, monocrystalline silicon, lens, glass, crystal glass, jade, etc., 4.Resin grinder 5.Coated abrasives--It is t...

Choose the right firebrick is very important, first of all, we need to know what is firebrick and the parameters and dimensions of refractory brick. Usually refractory can be divided into three mail categories. First, ordinary type, also the most widely used type. The main difference of it lies in the shape that it has no concave corners. Second, another type is special shape refractory which is a new type of firebricks widely used in recent years. The weight of such kind brick is about 16kg and it has three concave corners approximately. It is an ideal choice for furnace construction and is also chosen by most people. Besides, special shape firebrick has three more grooves than ordinary type refractory. Third, this is a standard type firebrick. It is usually used for common furnace construction. If there are no other special requirements for brick bond, it’s better to use standard firebrick. For choosing refractories , we can not only select...

When customers purchase firebrick from us, and we certainly have to introduce them a range of knowledge about firebrick, and the density of firebrick most need to know, let our technician to tell you how to introduce customers firebrick density. Firebrick densities are based on different raw materials to the decision, because if the density of refractory bricks are the same, then it shows all aspects of the refractory bricks are the same, so if we choose firebrick, what does that mean? The density of the refractory bricks so we made a classification according to the material used in refractory bricks. The density of the refractory bricks and refractory bricks may also be resistant to some of the impurities in the outside world.   Refractory bricks density of different materials:   Ordinary firebrick: 1.8 ~ 2.0g / cm3 Dense firebrick: 2.05 ~ 2.20g / cm3 Silica brick: 1.80 ~ 1.95g / cm3 Magnesia brick: 2.60 ~ 2.70g / cm3 Alumina ...