Tijolos refratários para venda
Refractory brick (fire brick) is a refractory material made of refractory clay or other refractory raw materials.
Tijolos refratários (fire-resistant bricks) are mainly used as high-temperature building materials and structural materials for construction kilns and various thermal engineering equipment.
It can withstand various physical and chemical changes and mechanical effects at high temperatures.
According to the preparation process method divide can be divided into firing brick, not firing brick, capacitor turn (fusion casting brick), refractory insulation brick, etc.
Sobre a PER Refractory Company
PER refractory company produces high-quality refractory bricks including refractory clay bricks, tijolos refratários de alta alumina, tijolos refratários de sílica, tijolos refratários de magnésia, tijolos de mulita, e tijolos de isolamento, etc.
Enquanto isso, se você está interessado em nossos produtos de tijolos refratários, ou se você está planejando construir uma fornalha ou forno, você pode entrar em contato conosco! Nós responderemos a você prontamente com aconselhamento profissional e um preço competitivo!
Three Aspects Make Refractory Bricks Resistant to High Temperatures
Summary of years of manufacturing experience of PER Refractory company: Reasons for high temperature resistance of refractory bricks.
1. The high refractoriness of the raw minerals used in refractory fire bricks.
2. Como os materiais inorgânicos não metálicos do nível de matérias-primas determinam o nível de seu uso.
3. The finished billets are subjected to high temperatures above 1500°c in high-temperature tunnel kilns, so the refractory bricks can resist high temperatures and are suitable for high-temperature furnace linings.
The Most Complete Information About Refractory Brick Types
Refractory bricks can be classified into five major categories according to their composition: silica-alumina refractory bricks, alkaline series refractory bricks, carbon-containing refractory bricks, zirconium-containing refractory bricks, and thermal insulation refractory bricks. Any furnace is not just one kind of refractory bricks and masonry, need different refractory bricks with each other to use.
1. Silica-Alumina Refractory Bricks
Silica-aluminum refractory brick is based on the basic theory of the AL2O3-SiO2 binary system phase diagram, mainly including the following.
1.1 Tijolos refratários de sílica — It refers to the refractory brick containing SiO293% or more and is the main variety of acid refractory brick. It is mainly used for masonry coke ovens, but also used in a variety of glass, sets from, carbon calciner, the refractory brick of the vault, and other load-bearing parts of the hot work Mississippi Road. But it is not suitable for use in 600 ℃ and temperature fluctuations in thermal equipment.
1.2 Clay Refractory Bricks — Clay bricks mainly have mullite (25% para 50%), fase de vidro (25% para 60%), and square quartz and quartz (até 30%) composed of. It is mainly used in blast furnaces, altos-fornos quentes, heating furnaces, power boilers, fornos de cal, fornos rotativos, cerâmica, and refractory brick firing kilns.
1.3 Tijolos refratários de alta alumina — The mineral composition of high alumina bricks are corundum, mulita, e fase de vidro. Its content depends on the AL2O3/ SiO2 ratio and the type and amount of impurities. High alumina bricks products include fused cast bricks, fused granular bricks, unfired bricks, and unshaped refractory bricks. Tijolos refratários de alta alumina são amplamente utilizados na indústria siderúrgica, non-ferrous metal industry, e outras indústrias.
1.4 Corundum Refractory Bricks — Corundum brick refers to the AL2O3 content of not less than 90%, corundum as the main phase of refractory brick. It can be divided into sintered corundum bricks and electrofused corundum bricks. 2.
2. Alkaline Series Refractory Bricks
Alkaline refractory bricks are refractory products with alkaline oxides (Mg0 and CaO) as the main components. Its main varieties include the following.
2.1 Magnesia Refractory Bricks — magnesia brick is magnesite as raw material with magnesite as the main crystalline phase, MgO content in 80% para 85% or more of the refractory brick. Its main products are Martin sand, ordinary metallurgical magnesium sand, ordinary magnesium brick, magnesium silicon brick, magnesium aluminum brick, magnesium calcium brick, magnesium carbon brick, e outras variedades. Magnesia refractory brick is mainly used in flat furnaces, oxygen converters, fornos elétricos, non-ferrous metal smelting, etc.
2.2 Dolomite Bricks — Dolomite brick is a kind of alkaline refractory brick produced with dolomite as the main raw material. Widely used in the alkaline converter, also can be used for some refining lining of the package.
2.3 Magnesia Olivine Refractory Bricks — magnesia olivine refractory brick, is magnesia olivine 2MgO-SiO2 as the main component of a kind of refractory brick. Mainly used in flat furnace accumulation chamber lattice brick, brick for ingot casting, fundo do forno de aquecimento, and copper refining furnace also has a good use effect.
3. Carbon-Containing Refractory Bricks
Carbon-containing refractory bricks are made of carbon or carbon compounds. Its main varieties include the following.
3.1 Carbonaceous Refractory Bricks — Carbonaceous refractory brick is made of carbonaceous material as the main raw material, adding the right amount of binding agent made of high temperature resistant neutral refractory brick products. Carbonaceous refractory bricks are widely used in the electrochemical industry, indústria química, indústria petroquímica, electroplating industry, ferroalloy industrial furnace, acid, alkali tank lining and pipeline, and furnace lining for smelting non-ferrous metals (such as lead, alumínio, tin, etc.).
3.2 Graphite Refractory Products — Graphite refractory products are made of natural graphite as raw material, with clay as binding agent refractory materials. One of the most produced and widely used is the graphite clay crucible for steel making and smelting non-ferrous metals.
3.3 Silicon Carbide Refractory Products — Silicon carbide refractory products are advanced refractory materials produced from silicon carbide (SiC) as raw material. It has good wear resistance and corrosion resistance, high-temperature lightness, high thermal conductivity, small linear expansion coefficient, e boa resistência ao choque térmico. In the chemical industry, it is mostly used in oil and gas generators, organic waste calciners, petroleum gasifiers, and desulfurization furnaces. Além disso, in space technology, it can be used as a rocket nozzle and high-temperature gas turbine blade, etc.
4. Zirconium-Containing Refractory Bricks
Zirconium-containing refractory bricks belong to a kind of acidic material. It is a product made of natural quartz sand (ZrSiO2) as raw material.
Zirconium refractory bricks are different from silica-alumina refractory bricks and carbon-containing series refractory bricks, which have good slag resistance, and a small thermal expansion rate.
The thermal conductivity decreases with the increase of temperature, high load softening temperature, high abrasion strength, e boa resistência ao choque térmico.
Now it has become an important material in various industrial fields. With the development of continuous casting and vacuum degassing technology in the metallurgical industry.
Zircon refractory bricks are more and more widely used, and there are mainly the following classifications.
4.1 Zircon Bricks — Zircon bricks are used in the steelmaking process, using the out-of-steel degassing method, and zircon refractory to molten slag, steel erosion resistance, and good resistance to thermal shock, and suitable for working under reduced pressure. Zirconia refractory bricks have high resistance to acidic slag and glass and are therefore also widely used in severely damaged parts of glass kilns where the most active glass is melted. Zircon refractories also have the property of not being penetrated by metallic aluminum, aluminum oxides, and their slag, and thus have also obtained good results in the furnace bottoms of aluminum refining.
4.2 AZS Electrofused Bricks — AZS electrofused brick, also known as electrofused zirconia corundum brick, with the development of the glass industry, AZS electrofused brick has become the key part of the glass kiln must refractory materials. It is more resistant to the erosion of glass liquid.
4.3 Zirconium Mullite Electrofusion Bricks — Zirconium mullite electrofusion brick, this kind of brick is characterized by a dense crystal structure, high load softening temperature, and good resistance to thermal shock. With high mechanical strength at room temperature and high temperature, boa resistência ao desgaste, good thermal conductivity, and excellent resistance to slag erosion ability. The use of this kind of product is wide, used in metallurgical heating furnaces, even heat furnaces, calcium carbide furnace outlets, glass kiln walls, etc., the use of very good results.
5. Heat-Insulating Refractory Bricks
Heat-insulating refractory bricks. It is a refractory material with high porosity, baixa densidade aparente, e baixa condutividade térmica. Heat-insulating refractories are also called light refractories. It includes the following classifications.
5.1 High Alumina Thermal Insulation Lightweight Refractory Bricks — High alumina thermal insulation lightweight refractory brick is a thermal insulation lightweight refractory brick with bauxite as the main AL2O3 content of not less than 48%. High alumina heat-insulating lightweight refractory bricks can be used for masonry heat insulation layer and no intense high-temperature molten material erosion and scouring effect of the parts. When in direct contact with the flame, the surface contact temperature of general high alumina thermal insulation refractory bricks shall not be higher than 1350℃. Mullite thermal insulation refractory bricks can be in direct contact with the flame and have the characteristics of high-temperature resistance, força elevada, and remarkable energy-saving effect. It is suitable for the lining of pyrolysis furnaces, hot air furnaces, ceramic roller kilns, electric porcelain drawer kilns, and various resistance furnaces.
5.2 Clay Thermal Insulation Lightweight Refractory Bricks — clay thermal insulation lightweight refractory brick is made of refractory clay as the main raw material of AL2O3 content of 30% ~ 48% thermal insulation refractory brick. Its production process adopts the burn-out plus character method and foam method. Argila refratária, drift beads, and refractory clay clinker as raw materials, mixed with a binding agent and sawdust, after batching, misturando, moldagem, secagem, e disparando, to produce a bulk density of 0. 3 ~ 1. 5g/cm3 products. The production of clay thermal insulation bricks accounts for more than half of the total production of thermal insulation refractory bricks.
5.3 Diatomaceous Earth Thermal Insulation Lightweight Refractory Bricks — Diatomaceous earth thermal insulation lightweight refractory brick is a thermal insulation refractory product made of diatomaceous earth as the main raw material. It is mainly used in the heat insulation layer below 900℃.
5.4 Drift Bead Bricks—Drift bead brick, is a heat-insulating refractory product made of drift beads as the main raw material. Drift beads are hollow beads of aluminosilicate glass floated from fly ash of thermal power plants. It is a light, thin-walled, hollow, smooth surface, high-temperature resistant, and has good heat insulation performance. Using these excellent characteristics of drift beads, we can make light-weight thermal insulation refractory materials with excellent heat preservation performance. The production of drift bead brick can be semi-dry molding.
Performance of Refractory Bricks
Refractory fire brick is an inorganic non-metallic material with refractories not less than 1580℃, which is the basic material for serving high-temperature technology.
It is the structural material for masonry kilns and other thermal equipment.
It is also a functional material for manufacturing certain high-temperature containers and parts or playing a special role.
Refractory bricks must have a good organizational structure, propriedades térmicas, propriedades mecânicas, and use properties for successful use under the action of high temperature.
That is, there is a high degree of refractories, temperatura de amolecimento da carga, resistência ao choque térmico, e resistência à erosão química e outras propriedades.
In this way, it can withstand the effects of various physical and chemical changes and meet the requirements of the use of thermal equipment and components.
Sobre a empresa de refratários PER
Empresa de Refratários PER está localizado na cidade de Xinmi, Província de Henan, a cidade natal de materiais refratários na China. Nossa empresa é uma empresa refratária de base tecnológica que integra R&D, Produção, vendas, e serviço técnico. A riqueza de recursos e a excelente qualidade do território proporcionam condições superiores inigualáveis para a produção de materiais refratários. Nossos principais produtos são tijolos de barro refractário, tijolos refratários de alta alumina, tijolos refratários de sílica, tijolos refratários de magnésio, tijolos de mulita, tijolos de isolamento, e outros produtos resistentes a altas temperaturas.
Empresa PER refratário é a base de produção de verde, economia de energia, e novos materiais refratários ecológicos. Nossa empresa passou ISO9001:2008 certificação do sistema de qualidade internacional e GB/T24001-2004 / ISO14001:2004 certificação do sistema de gestão ambiental, certificação de agência de inspeção de qualidade empresarial. Nossos produtos são vendidos bem em mais de 20 países em todo o mundo. Eles são os produtos refratários preferidos para metalurgia, não ferroso, petroquímica, vidro, cerâmica, e outro indústrias de refratários.
