Loading
avatar

refractory

What's on your mind?

Status is not set

You wrote 116 articles
You added 0 comments
Avg rate: 8.0
Register date: over 2 years ago
Collection: 115
Followers: 0

Side column

Nothing here. Yet.

View type: Grid | List  •  Articles per page:  10 | 20 | 50  •  Sort by: Date | Rating
Tags Tags

The Properties of Fire Clay Brick

Fire clay brick belongs to a weak acid refractory product, can resist acid slag and acid gas erosion, resistance to alkaline substances slightly worse. Fire clay brick has good thermal performance, resistance to rapid cooling hot.  The refractoriness of fire clay brick reaches up to 1690-1730 ℃, but the load softening temperature is more than 200 ℃ lower than silica brick. With the temperature rising, the volume of the clay brick is uniformly expanded in the temperature range of 0-1000 ℃, the linear expansion curve is similar to a straight line, linear expansion rate is 0.6% -0.7%, only about half of the silica brick. When the temperature reaches 1200 ℃ and then continue to heat up, the volume will start to shrink from the maximum expansion. The residual shrinkage of fire...

0
0

What are the types of magnesia brick in industry?

Magnesia brick, because of its heat, pressure and other aspects of high-quality characteristics are widely used in industry, construction and other aspects, there are several different types of magnesia brick, according to different product requirements, its types are mainly three: 1. Burned magnesia brick: The burned magnesia brick is made of high quality magnesia and chrome ore fine ingredients. It can adjust the content of Cr2O3 according to different needs. The product has good thermal stability and high temperature performance. It is widely used in cement kiln and nonferrous metallurgical furnace. 2. Directly combined with magnesia brick: Directly combined with magnesia brick with low impurity content of chrome ore and high quality pure magnesia as raw material, after high ...

0
0

The standards of ceramic fiber blanket

In our life, the application of ceramic fiber blanket is very wide, so in order to let everyone use it better, we need to understand it in particular, we bring some quality standards knowledge to everyone. 1. The lining thickness of ceramic fiber blanket must meet the requirements. 2. The Al2O3 content is not less than 45%. 3. Ceramic fiber blanket should be carried out before the test row, the layer should be sticky solid, gap staggered. 4. After the completion of the product masonry, a surface finishing, uneven, to be flat with the pressure plate, the gap should be cut to cut the larger ceramic fiber tile trim, so that the surface flat tight. 5. Each time the protective layer must be carried out in two rounds to ensure that the ceramic fiber blanket protective layer thicknes...

0
0

Production Process Methods of Refractory Material

According to the different dense degree and shape of products, the production process methods of fire clay insulation brick mainly contain sintering method, casting method, melt blowing method and non-firing method. 1. Sintering method Sintering method is part of the raw material will be pre-fired into clinker, broken and sieved, and then according to a certain ratio and raw material mixture, after molding, drying and firing. The purpose of pre-burning raw material is to burn which the moisture, organic impurities, the gas of sulfate decomposition, in order to reduce the sintering shrink of products, to ensure the accuracy of product dimensions. The raw material is also sieved after crushing and grinding, because the billet is graded by powder of different particle sizes to ensure t...

0
0

What steps does Magnesia Chrome Brick masonry need?

According to the experience in producing magnesia chrome brick, in order to make the kiln lining material fully into effect, to ensure the kiln lining material life cycle, extend the service life of refractory brick, the company made the following provisions to refractory brick masonry: 1. Carefully clean the dust and slag of kiln shell inner wall. 2. The kiln shell should be smooth without rugged phenomenon. 3. The gray seam control is in 1.5mm ~ 2mm between brick and brick. 4. The cement daub should be uniform and full, do not have the phenomenon of lack of pulp. Evenly smear the cement, and use masonry to twist cement, make the cement squeezed out. 5. The masonry of the kiln lining need to be flat and can not have the wrong platform, should strive to avoid dislocation, tilt...

0
0

The Performance of Magnesia Brick

The performance of magnesia brick: 1. The main body of magnesia brick is a strong alkaline periclase, density, less water, forming pressure is high, was low porosity, bulk density. So magnesia brick with multi-mineral composition, strong alkaline, high density characteristics. 2. Magnesia brick is a typical alkaline refractory, resistance to alkaline slag erosion ability. 3. The melting point of periclase up to 2800 ℃, so the magnesia refractoriness is also high, generally up to 2000 ℃ or more. 4. Magnesia brick load softening temperature is much lower than the refractoriness, about 1500 ℃. 5. Thermal conductivity of magnesia brick is better, but the thermal conductivity with the temperature increased significantly reduced, that is, magnesium brick, good thermal conducti...

0
0

Corundum brick body's drying system

The drying system of corundum brick is the condition sum  when the body is dried.It includes the drying time, temperature and relative humidity of the drying medium, corundum brick residual moisture dry, dry before the complete body. At present, large and medium-sized enterprises to use adobe tunnel drying chamber, drying, the drying time display time interval.Determination of car range should consider the following factors: the nature of the material and structure, the shape and size of brick, brick body end demand of initial moisture content and drying residual moisture, drying medium temperature, humidity and speed, the structure of the dryer, etc.Usually, the time interval is 15 ~ 45 minutes, before entering the dryer, large and special shaped products should be natural dryin...

0
0

Application of Ceramic Fiber Module in Industrial Furnace

Ceramic fiber is a fiber high temperature material, in the 20th century, 70 years to develop a new type of industrial furnace and other energy-saving technological transformation of energy-saving equipment. Ceramic fiber as light and efficient fire-resistant insulation materials, with light weight, good insulation properties, construction convenience, no lining baking and many other advantages, it is currently the most widely used industrial lining materials. Ceramic fibers have very low thermal conductivity and are used for lining to reduce furnace wall cooling, resulting in better energy savings. At the same time because of the characteristics of low thermal inertia, reheat furnace temperature control becomes more convenient, so ceramic fiber (module) as the lining is widely used in i...

0
0

New Development of Refractory Technology in China

Refractory material is the base material for high temperature industry. In many high-temperature industries, the steel industry is the most important users of refractories, the use of iron and steel industry accounts for about 65% to 70% of the total. Iron and steel industry refractory varieties, quality and quantity of demand, in the refractory industry technology development plays a guiding role. 1. Scientific and technological achievements China's refractory industry to adjust the variety structure, technological progress significantly Modern large-scale iron and steel enterprises important to do the basic domestic refractory self-sufficiency, refractory products and fire clay brick every year exports. Refractory exports in 2005 reached 1.53 million tons. This is a very outstan...

0
0

Characteristics and Application of Lightweight Refractories

Light refractory material, also known as insulation refractories and insulation refractories, refers to the high porosity, small bulk density, low thermal conductivity, with refractory insulation properties. It includes insulation refractory products, refractory fibers and refractory fiber products. As a kind of refractory material, light refractory material has certain high temperature mechanical property and good volume stability, which is necessary for all kinds of high temperature heat equipment. Compared with dense refractory material, gas-filled lightweight refractory material has high apparent porosity, small bulk density, good insulation properties, shielding with the thermal effect. Therefore, the main features of light refractory material are: 1. High apparent porosity T...

0
0
 1 2 3 4 5 6 7
 Page
of 12