wanhaorefractory

High alumina brick is a kind of refractory , whose main component is Al2O3. For example, Al2O3 is high than 90$, called as corundom brick. Because of different resources, different countries have different standards. For example, European countries regulate that the lowest limit of Al2O3 is 42%. And in China, high alumina brick is divided into three classes based on Al2O3 component. Ⅰclass──Al2O3 >75%；Ⅱclass──Al2O3 is about 60～75%；Ⅲ class──Al2O3 is about 48～60%. Mainly used for masonry blast furnace, hot stove, furnace top, blast furnace, reverberatory furnace, rotary kiln lining. In addition, high alumina brick is also widely used as open hearth regenerative checker bricks, gating system with plug head, outlet brick. But the price of high-alumina brick clay brick than high, so with clay brick to meet the requirements of the place do not have to use high-alumina brick. Article Source:  The application of high alumina brick Company name: Luoyang Wan...

Refractory motar is composed of refractory powder, bond agent and additive agent. Almost all refractory raw material can be used to make refractory powder to produce refractory morta. Ordinary refractory motar is made of refractory powder, adequate plastic binder and plasticizer. Its room temperature is low, the formation of high temperature ceramic bonding with high strength. The combination of hydraulic, gas hard or thermosetting binder is called as chemical bonding refractory clay, it is a formation of a certain chemical reaction and hardening before the formation of ceramic bonding temperature. Refractory clay particle size varies according to the requirements, the ultimate size is generally less than 1mm, and some less than 0.5mm or smaller. Refractory motar according to the composition of the different materials can be divided into: dry soil refractory motar, high alumina refractory mortar, Special refractory motar , magnesia refractory mortar.  Articl...

Fused zirconia corundum fire brick , also known as AZS fused zirconia corundum brick abbreviation is AZS. It is based on the chemical composition of three Al2O3-Zr02-Sio2 ternary phase diagram. According to their order of content, Al2O3 takes A, Zr02 takes Z, Sio2 takes S. The national standards adopted this abbreviation, for example, number 33 casting zirconia corundum brick, abbreviated as AZS-33 #, 36 cast zirconia corundum brick, abbreviated as AZS-36 #, No. 41 cast AZS bricks, abbreviated AZS-41 #. Fused zirconia corundum brick is pure alumina powder containing 65% zirconium oxide, silicon dioxide about 34% of zircon sand, in the electric furnace to melt within the injection of cooling within the model and the formation of a white solid, rock phase structure consisting of corundum and zircon stone ramp and a glass of eutectoid phase, to learn from in terms of phase and zirconium corundum stone ramp eutectoid phase, the glass phase is filled between them crystals. ...

The conditions required for stable operation of blast furnace are as follows: 1. Good raw material quality, containing low harmful impurities, with good metallurgical performance. 2. The quality and quantity of raw material for blast furnace should be stable and balanced, and the production does not appear to cause the sintering, pellets. 3. The blast furnace foremen have high technical quality, high level operation of blast furnace, develop a scientific and perfect operating procedures (blast furnace needs standard deviation operation), no operational error basically, put an end to major accidents. 4. Achieve inspection, repair on time, shorten the equipment maintenance time, does not appear a major accident. 5. Respect the basic principles of metallurgy, the implementation of the scientific concept of development, do not appear management decision-making mistakes and blind command. 6. Able to maintain a long time of blast furnace reasonable profi...

High alumina refractory bricks , also known as high alumina brick, and its production and stickers brick production process is similar to the difference is more with high-alumina clinker powder, refractoriness than clay brick, anti-acid and alkali resistance candle better performance It is used in various kiln firing zones. Al2O3 content of more than 48% of the aluminum silicate   refractory   bricks are collectively referred to as high alumina refractory bricks. (Al2O3 is 60% ~ 75%); Ⅲ and so on (Al2O3 is 48% ~ 60%). The Al2O3 content is divided into three grades: I and so on (Al2O3> 75%); According to the mineral composition can be divided into: low mullite (including sillimanite) and mullite (Al2O3 for 48% ~ 71.8%), mullite - corundum and corundum - 71.8% ~ 95%), corundum (Al2O3 95% ~ 100%) and other refractory bricks. With the increase in Al2O3 content in   high alumina bricks , the number of mullite and corundum components also increased, the glass phase de...

The properties of magnesia are classified into chemical and physical properties.The chemical properties of magnesia sand is mainly refer to the periclase. Mgo is the main component in the periclase. Periclase is one of the most common minerals in cement clinker. It can coexist with four kinds of main mineral C3S, C2S, C3A, C4AF in the cement clinker. So periclase has good erosion resistance against cement clinker. （1）Periclase has very high melting point so that the magnesia refractories are charactorized with good high-temperature resistance. （2）Periclase has good thermal conductivity. When using high mgo content refractory , and the kiln skin can not be hung, the surface temperature of kiln body will raise. At that time, not only it will cause a great loss of heat dissipation, but also easy to burn the cylinder. （3）Periclase has high thermal conductivity. So that the thermal shock resistance for magnesia refractories are not enough. In the process of using, the...

More and more steel plants are using tundish exhangeable s izing nozzle recently. Compared with traditional sizing nozzle , the advantages of exchangeable nozzle are: 1.Simple structure, reliable performace, easy to operate. 2.Adopt single tube oil passage control, light cylinder, easy to handle and operate, only one button required for control. 3.The rack and base of cylinder are intergrated, which makes the positioning of slide block precise. 4.The cover of lower slide block is made from cast iron, the coordination of lower slide block and machined face of platen is with high precision, which could avoid leakage accident caused by the unqualification of alide block size. Wanhao Refractory is a manufacturer who is specialized in designing various kinds of furnace and making refractories for electric furnace, ladle, tundish, blast furnace, AOD furnace, IF furnace, refractory products , fire brick for sale , refractory nozzle, etc. Article Source:  The advantages of ...

Refractory   is the industry with a serious excess capacity. Many refractory production enterprises in China and highly dispersed, are the main reasons for the vicious competition. According to the statistics of 2016 key enterprises, the top 16 enterprises sales revenue accounted for about 18% of the total income of   refractory products , less than 20%; the top 20 enterprises accounted for about 25%. Currently, the market is gradually shift to the direction of standardization, which is an excellent opportunity to standardize the   refractory market . At present, the overall contract business model, although there are payment lag and other unfavorable factors, but it has played a positive role in ?integrating the market, improving the industrial concentration. The overall contracted business model for   refractories   production enterprises, has extremely high requirements on the product quality, variety and design, construction, maintenance and other support...