High Alumina Bricks
Fused AZS Zirconia Corundum Bricks
Lightweight Mullite Bricks
Andalusite Bricks
Low Creep High Alumina Bricks
Fire Clay Bricks
Acid-Resistant High Alumina Bricks
Low Creep Fire Clay Bricks
High Alumina Insulation Bricks
Phosphate High Alumina Bricks
High Alumina Refractory Bubble Bricks
Corundum Bricks
Corundum Mullite Bricks
Chrome Corundum Bricks
High Alumina Refractory Castables
Corundum Castables
Corundum Mullite Castables
Zirconia-Corundum Casting Castables
Steel Fiber Castables
Mullite Castables
High Alumina Insulating Castables
Silicon Carbide Castables
Magnesia Alumina Spinel Castables
Refractory Ramming Mass
High Alumina Refractory Mortar
High Alumina Refractory Cement
Acid Resistant Castables
Alkali Proof Castables
Magnesia Bricks
Silica Bricks
Silicon Carbide Refractories
Refractory Precast Blocks
Chrome Corundum Casting Castables
Chrome Corundum Refractory Bricks
Refractory Ceramic Balls
Refractory Honeycomb Ceramic Regenerator
Refractory Corundum Ceramic Balls
Home > News
Refractory cement is also called aluminate cement, also known as high-temperature cement. It is made of high-quality bauxite and high-quality lime as raw materials and is mixed into an appropriate amount of raw material in a certain proportion. After sintering, the resulting cooked product has aluminate as the main component. The material is then ground into fine powder to make a fire-resistant hydraulic cementitious material called refractory cement. The refractory degree of refractory cement is not less than 1580 degrees Celsius. According to different compositions, it can be divided into aluminate refractory cement, low calcium aluminate refractory cement, calcium magnesium aluminate cement, and dolomite refractory cement. Cement is added with special materials used in the preparation of high-temperature resistant (fire-resistant) concrete. There are: Low calcium aluminate refractory cement with pure bauxite and limestone as the main raw materials. Dolomite high-temperature cement is made from dolomite as the main raw material and then added with apatite, iron ore, etc. Materials that can produce chemical reactions and harden at high temperatures, such as high-temperature-resistant cement with refractory sulfates, borates, and phosphates as cementing materials, are used. Refractory cement product classification 1. Aluminate refractory cement Also called high alumina cement, it is the...
Zirconium corundum brick refers to a refractory brick containing 30~41% ZrO2. The main mineral composition is corundum, baddeleyite, and glass phase. Zirconium corundum brick is a white solid formed by melting pure alumina powder and zircon sand containing about 65% zirconium oxide and 34% silica in an electric furnace and then pouring it into the mold for cooling. Its petrographic structure is composed of corundum. It is composed of the eutectoid of zircon plagiolite and the glass phase. From a phase perspective, it is the eutectoid of the corundum phase and the zircon plagiolite phase. The glass phase is filled between their crystals. 1. Types of zirconium corundum bricks Fused zirconium corundum brick. Also known as fused AZS bricks. It is made of industrial alumina and selected zircon, with a small amount of Na2CO3 added for electrofusion. When producing zirconium corundum bricks with high ZrO2 content, some ZrO2 needs to be added. Molten zirconium corundum bricks are commonly known as tinplate bricks and also called corundum clinched zircon bricks. These cast materials are produced by arc melting, subsequent casting into molds, and long-term heat treatment. The main chemical components are Al2O3 50%~70%, ZrO2 20%~40%, and the rest is SiO2. The...
There are two main types of refractory bricks commonly used: clay refractory bricks and high alumina bricks. These two types of refractory bricks are very different in appearance from physical and chemical indicators, and their uses are also very different. So how to distinguish these two types of refractory bricks? Today I will briefly introduce it to you in an article. 1. Clay refractory bricks Clay refractory bricks are the earliest refractory building materials. They use high-alumina vanadium clay as the main raw material and are used for lining high-temperature kilns to provide thermal insulation. Clay refractory bricks are the main varieties of silicon-alumina series products. It is a refractory product using clay clinker as aggregate and an Al2O3 content of 30-48%. Clay bricks are divided into ordinary clay bricks and low-creep clay bricks according to their Al2O3 content. Ordinary clay bricks are divided into RN-42 and RN-40. Low creep clay is divided into DRN-45\DRN-42\DRN-40, etc. The mineral composition of clay bricks is mainly kaolinite (Al2O3·2SiO2·2H2O) and 6% to 7% impurities (potassium, sodium, calcium, titanium, iron oxides). The firing process of clay bricks is mainly a process in which kaolinite continuously loses water and decomposes to form mullite (3Al2O3·2SiO2) crystals....
For customers who do not understand refractory castables and refractory cement, these two products are easily confused. This article will give you an in-depth understanding of the differences between these two products so that you can better understand them. 1. Refractory castables Refractory castable is a kind of unshaped refractory material. It is made of refractory aggregates, powders, binders, and admixtures through batching and mixing. Depending on the selected aggregates and binders, the castables produced and the functions are also different. There are many types of refractory castables, and the corresponding castables can be selected for lining according to the industrial furnace environment. Refractory castables are usually used as overall kiln lining products. During on-site construction, the castables and binders need to be pre-mixed, then add appropriate water, stir evenly, and then pour into the installed lining mold. The vibrator is vibrated into shape and can be put into use after curing, demoulding, and baking. 2. Refractory cement Refractory cement is a refractory material used as a binder and refractory powder when making refractory castables. It uses high-quality bauxite and lime as raw materials and is mixed into an appropriate amount of raw material in a certain proportion. After sintering,...
Refractory brick is a kind of brick with refractory properties. It can withstand high temperatures of about 1500-1900℃. In addition, some high-quality refractory bricks are also anti-corrosion. Its main materials are high alumina bauxite and quartz. Made of refractory raw materials such as clay, feldspar, etc., they are usually used in the construction of various high-temperature kilns such as industrial furnaces, high-temperature furnaces, smelting furnaces, etc. Today I will introduce the types, characteristics, and physical and chemical properties of refractory bricks. In the indicators and other parts, I will tell you in detail what refractory bricks are. There are many types of refractory bricks. According to different temperatures and uses, they can be divided into ordinary refractory bricks, high-grade refractory bricks, lightweight refractory bricks, special-shaped bricks, etc. At present, our common refractory bricks include high-alumina refractory bricks, corundum bricks, and carbonized refractory bricks. Silica bricks, andalusite bricks, clay bricks, silica bricks, etc. are usually selected according to the location and temperature used. Among them, high alumina refractory bricks are the most common type of refractory bricks in high-temperature kilns. What we need to pay attention to when purchasing refractory bricks should be the various performance indicators of refractory bricks, such...
The flue is a tubular device for emitting waste gas and smoke. It is an essential part of a high-temperature kiln. Since the temperature of a high-temperature kiln is relatively high, the temperature of the flue gas produced can reach thousands of degrees. To ensure that the flue is normal for the operation and service life of the flue, the flue refractory bricks used in the process of building the flue are very important. They must have good heat resistance and chemical resistance. The selection of flue refractory bricks is generally based on lightweight refractory bricks, which can withstand high temperatures and reduce the weight of the flue, thus ensuring the normal operation of the flue. Generally, lightweight refractory bricks are mainly divided into light-quality mullite refractory bricks, lightweight clay refractory bricks, and lightweight silica bricks should be selected according to the properties of the flue gas produced by the medium, such as the temperature of the flue gas, whether the flue gas is corrosive, etc., so that Only in this way can we choose the right refractory bricks correctly. When purchasing refractory bricks for flues, we need to consider several factors. The first is the type and specification of...
High-temperature refractory mortar is an indispensable adhesive in the construction of refractory bricks. It is also called a high-temperature binder. It can bond and build refractory bricks with each other and maintain good stability in high-temperature environments. Because of its properties, it is widely used in industrial kilns, thermal power plants, petrochemical enterprises, and other fields. Today, the editor will take you to know the price of high-temperature refractory clay to help you when purchasing high-temperature refractory clay. High-temperature refractory clay is currently mainly divided into aluminum silicate refractory clay, high-alumina refractory clay, and carbon refractory clay according to raw materials. Among them, aluminum silicate refractory clay occupies a place in the market with its lower price and good fire-resistant performance; High-aluminum refractory cement is favored because of its excellent high temperature resistance and wear resistance, although the price is relatively high; carbon refractory cement is used in some special occasions because of its superior thermal shock resistance. Today, the editor mainly talks about the price of high-aluminum refractory clay that is used more frequently. At present, the price of high-aluminum refractory clay is generally 2600-2800 yuan/ton. Its price will also be affected by many factors, including raw material costs,...
During the construction process, low cement castables must be constructed according to the requirements of the construction drawings. According to the technical requirements of the drawings, the furnace steel structure, baselines, holes, and other parts should be comprehensively and carefully inspected and accepted. Check the side wall insulation layer bricks and anchor bricks. The shape and size of the anchor bricks and hanging bricks should be inspected and accepted piece by piece. There should be no transverse cracks. The position of the bricks should meet the design requirements and keep the anchor hooks with the furnace shell. Or the furnace ceiling hanging beams are vertical. To prevent the side wall lightweight insulation bricks from absorbing water, a layer of asphalt should be painted on their surface. It is necessary to check whether the inner mold is firmly supported and cannot be moved. The surface should be wrapped with cloth; the template should also be firmly supported and the surface should be brushed with oil to facilitate demoulding. Check whether the mixer, vibrator, etc. are working normally; and whether the driving is normal. If a failure occurs, repair it in time or prepare other hanging equipment. You must ensure that pouring...
An aluminum melting furnace is a device used to heat and melt aluminum materials. It is usually used in casting metallurgy, manufacturing aluminum alloys, and other fields. 1. After starting the heating furnace of the aluminum melting furnace, adjust the heating parameters until they heating parameters are stable before normal heating production can be carried out. 2. Before starting the aluminum melting furnace, you must check whether the pushing and discharging devices, circulating water, and air pressure are normal, whether the limit switch, manual and automatic switch positions are in the required positions, check whether the materials on the workbench meet the requirements for forgings, and you must always pay attention to it. Cooling water, because cooling water is the lifeline of the induction furnace, the outlet water temperature must not exceed 60°C. 3. The aluminum melting furnace should be placed correctly during the charging process. All large pieces of aluminum need to be processed before being installed in the furnace, and attention needs to be paid to the method. The irregular side should be placed as upward as possible to avoid jamming the furnace lining. 4. When the aluminum melting furnace is first fired in the cold furnace, the...
Castable prefabricated parts generally refer to a special-shaped refractory workpiece that is cast in advance. Its main use is in some special parts or difficult-to-construct parts during the construction of high-temperature kilns. By placing these externally in the early stage the production of refractory materials with special shapes can not only reduce the difficulty of construction but also speed up the construction progress during the construction process and ensure the construction quality. Generally speaking, the shapes of prefabricated parts are all kinds of strange, and they are usually customized according to the actual conditions of use. Since they are cast through molds, they can be made into prefabricated parts of various sizes and shapes, which are more precise than machine pressing. Greater complexity, mass, and volume. 1. Raw materials for castable prefabricated parts The raw materials of castable prefabricated parts are generally proportioned according to the actual use conditions. Currently, common raw materials include high aluminum, clay, corundum, silicon carbide, and other raw materials. They are professionally prepared according to the actual use temperature and use environment. The proportions are then added, poured into the mold, air-dried, and finally calcined at high temperature to make the finished product. 2. Characteristics...
Home Tel Email Inquiry
