Low Carbon Brick,Carbon Brick,Magnesia Brick,FireBrick,Fire Brick,Refractory Brick,Refractory Firebrick

Low Carbon Brick

Low carbon magnesia carbon brick using with crystal magnesite, fused corundum, fused spinel, high purity and ultrafine graphite and nano composite antioxidant as raw materials, which are used for ladle slag line. Low carbon and carbon-free corundum spinel bricks are used for ladle lining and bottom. It can realize ladle low carbon and carbon-free to meet the needs of high grade and ultra-clean steel. The products are characterized by corrosion resistance, penetration resistance, erosion resistance, spalling resistance and good integrity, to meet the need of complete refining ladle. It is the leading level in the domestic.

Silica Brick,Fire Brick,Refractory Brick,FIrebrick,Refractory FIrebrick

Silica Brick

Introduction:

Mainly used for coke oven, hot blast stove, acid steelmaking furnace and glass melting furnace. The products can be manufactured according to customers' different requirements.

 

Magnesia Carbon Brick,Magnesia Brick,Carbon Brick,Refractory Brick,Refractories Brick,Fire Brick,Firebrick,Refractory Firebrick

Magnesia Carbon Brick

Introduction:

Magnesia carbon brick series used for the electric furnace are made by adoption of fused magnetite, high-purity magnesium sand and graphite as principal raw material, through high-pressure molding and low-temperature treatment. This product is mainly used for electric furnace lining, which enjoys advantages including high temperature resistance strength, corrosion and spalling resistance. According to the smelting conditions and the kind of smelting steel, different brands magnesia carbon bricks are available. Magnesia-carbon bricks are resin bonded bricks containing high-purity fused and or sintered magnesia and flake graphite as their main ingredients.

Modulation principle of slurry used for refractory brick

 Brickwork with refractory slurry should follow the following principles:
    (1) to deal with all kinds of refractory slurry pre experiment and pre laying brick front, confirm the bonding time, different mud initial setting time, consistency and water;
    (2) Modulation of different mud to use different instruments, and timely cleaning;
    (3) Modulation is not homogeneous slurry to use clean water, water should be accurate weighing, blending uniformly, adjusted with the use. Have good hydraulicity and modulation of hard mud shall not add water use, has the initial setting of mud may not continue to use the;
    (4) Modulation with phosphate mud to ensure material time trapped provisions, with the use of post set, well modulated mud arbitrarily diluted with water. This kind of mud for corrosive shall not be in direct contact with the metal shell.

    We take the zero defect management idea, through the production process from beginning to end. All the time since, in the pursuit of perfect quality at the same time, also constantly improve the service system, concerned about each of your needs, to provide professional sales and technical service for you.

Classification and application of mullite insulating bricks

    Mullite insulating brick is different according to the density is divided into light and heavy mullite brick, according to the use of different temperature are divided into: 1350 mullite bricks, 1450 mullite bricks, 1550 mullite bricks etc.

    Performance and application of mullite insulating brick:
    Refractory degree is high, can reach more than 1790 DEG C. Refractoriness under load was 1600 ~ 1700 DEG C. Compressive strength of 70 ~ 260MPa. Good thermal shock resistance. Sintered mullite brick and fused mullite brick two. Sintered mullite brick with high alumina bauxite clinker as the main raw material, adding a small amount of clay or raw bauxite as binder, after molding, sintering and made. Electric cast mullite brick with high alumina, A12O3 and refractory clay as raw material, adding charcoal or coke fines as a reducing agent, after forming by reduction of electric melting method to manufacture. Crystal fused mullite than sintered mullite, thermal shock resistance than sintered products. Uniformity of content in the high temperature properties of alumina and mullite mainly depends on their distribution and glass. Mainly used for blast furnace hot blast stove top, bottom, and glass furnace regenerator, ceramic sintering furnace, petroleum cracking system dead lining.

Selection of additives in firebrick

     Resin bonded carbon magnetite brick because of its good thermal shock resistance and slag resistance of iron and steel industry, in particular applied basic oxygen furnace and electric arc furnace. Carbon has excellent performance such as high thermal conductivity, low thermal expansion coefficient, high heat shock stability, at the same time and wettability of the job of slag has good corrosion resistance and anti erosion ability. As is known to all, the brick body carbon easy oxidation, which restrict its use in high temperature, the oxidation of carbon from the beginning of the 300 DEG C, with the increase of temperature oxidation speed.

    Ceramic materials (SiC, carbon silicon oxide) do coating in the flake graphite or carbon fiber, were impregnated with phosphate, cement foam board price and the use of surface glaze etc... These expensive methods used in the refractory brick have certain limitations, another method is through the steam treatment of fine particle boron, TiB2, ZrB2 and SiC and other materials to do thermal barrier coating on graphite or carbon composite material.

   A common method of refractory brick is to add fine-grained antioxidant materials, such as in MgO C SiC, B4C, brick added metal Al, Mg and (or) Si to prevent or limit carbon at high temperatures (> 1400 C) oxidation. Also, these additives are expensive, and can not completely prevent the oxidation of carbon at low temperature. Coating solution by liquid mixing 60% solid and 40% made, wherein the liquid binder is phosphoric acid and ethanol (liquid solution 30%) mixture. The outer coating brush MgO C brick thickness is about 0.8mm, the sample coating drying at room temperature is about 10min. In practice, the ladle after 5h pre heated to 1200 DEG C, because of some difficulties in the process of steel-making and sometimes need a longer time.

Brown Alumina Brick

Brown Alumina Brick

Composed of brown alumina brick and sic and added fines, the product is of new type compound brown alumina brick sintered at reducing atmosphere and molded at high pressure. Besides molten iron resistance, strong alkali resistance and erosion resistance, the product is characterized of self repairing, providing longer service life, which is available for both ceramic cup and blast tuyere of large and middle Before.
 

Al2O3-SiC-C Brick For Hot Metal Ladle And Torpedo Car

Al2O3-SiC-C Brick For Hot Metal Ladle And Torpedo Car

Al2O3-SiC-C brick, with corundum, bauxite, silicon carbide and graphite as raw materials, phonetic resin as binder, added with expansive agent and modifying agent, is characterized by good thermal shock resistance, good erosion resistance, and non-sticking slag. It is used for torpedo car and hot metal ladle, and can meet request of customers

Special high-temperature refractory bricks

In warship power device of large, marine fuel boiler is the heart of it, if the refractory brick hearth collapsed, the warship will be unable to sail, and can not be repaired in a short period of time, will cause the occurrence of very great accident, so can the development of a new type high-temperature refractory bricks then, we can avoid this situation happened. The special high-temperature refractory bricks must withstand strong fire baking, how high willthe fire resistance? This is something we must do the experiment, the general point of gold is already very high, but the refractory brick to withstand temperature must also high than its melting point can be.

General refractory temperature can reach 1500℃ even a super high temperature refractory material, but for many refractory materials, the degree of every increase of 50℃ would have been difficult to exceed. Like this on the battleship using ultra high temperature refractory brick products, even the best domestic refractories and refractory brick, the use of such to any field can play a very good advantage. It is not only the heat resistance is good, the service life of the refractory material in general than is relatively long compared.

Special high-temperature refractory brick is refractory and heat insulation, practicality is very strong, and compared to the refractory brick in general, this ultra high temperature refractory brick products can not be surpassed. More content about refractory brick, please contact us http://www.chinafirebrick.com.

How to introduce the refractory brick density to others

    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 Changxing 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 magnesia brick: 2.90 ~ 3.00g / cm3

Alumina bricks: 2.25 ~ 2.30g / cm3

Comprehensive above described, for the density of refractory bricks knowledge you have some understanding of it, so you know how to introduce others firebrick, if you want to ask for more knowledge about the firebrick remember to consult us.

The reasons of refractory brick collapse in the process of use

For refractory brick, we may not feel strange. With the progress of society, the application of refractory brick is more and more widely. Refractory brick appear collapse phenomenon in the actual using, so what causes it; following the Xinmi Changxing refractory material factory is simple to give you introduced the refractory brick collapse reason:
1, red hot refractory brick suddenly quenched with water will rupture and fall.
2, oven heating stage , rate master is not strict, temperature rise too fast, causing severe dehydration, masonry and damage due to expansion and shrinkage.
3, building stove masonry to expand stay insufficient, cracked and falling temperature after expansion.
4, the ash accumulation system, most of the metal salt corrosion of the refractory brick, embitterment of vanadium and nickel will penetrate into the refractory brick falling off caused by.
5 when the liquefied gas, heating, air flow ratio is undeserved, cause furnace blasting and vibration split off.
6, poor air flow furnace, flame directly flush furnace brick, the furnace brick thinning after a serious fall.
7, the operation course lifting furnace temperature pressure to balance, it is strictly prohibited to excessive temperature and pressure, avoid the sharp rise in the drop, because the temperature of each layer of brick always lags behind the furnace temperature, the more rely on the outer temperature changes more slowly, if drastic changes in a short time the temperature of the furnace, brick layer between refractory brick and brick joints rupture is caused due to temperature difference is too large to generate huge internal stress. Furnace pressure will cause the sudden change, refractory brick for each layer of gas pressure can't balance, pressure increasing and destroyed, may cause the whole refractory lining of furnace temperature fluctuation pressure serious collapse.

Mullite Insulating Firebrick,Insulating Brick,Firebrick,FIre Brick,Refractory Brick,Refractory Firebrick

Mullite Insulating Firebrick

Light Weight Mullite Insulation Brick can be widely used as lining or insulation layers of various industrial furnaces and kilns in metallurgical industry, machine building industry, ceramic industry, chemical industry.

Silica Brick,Refractory Brick,Refractory Firebrick,Fire Brick,Silica Brick,High Alumina Brick

Silica Brick

Mainly used for coke oven, hot blast stove, acid steelmaking furnace and glass melting furnace. The products can be manufactured according to customers' different requirements. 

Refractory brick grinder designing needs to follow the rules

Refractorybrick in the production process cannot do without the help of the size and quality of mold, mold determines the quality of refractory brick molding, the following is the principle of making refractory brick shaping mould:

1, the form must be smooth surface, smooth, and have higher hardness.

2, installation of formwork should taper, under the mouth small, big, catchy symmetry, and to ensure that qualified size refractory brick. Taper model after installation is generally 5/1000.

3, uneven surface should be made into a hopper.

4, as far as possible to make the maximum area of the refractory brick as the compression face.

Ditch edge at 5, within the model with radian, template at a corner with L - 2 mm arc.

6, in the event of a mould bottom protruding part, try to make the survival of wedge.

7, the scaling length ratio. The general is according to different kind of brick and clay, is determined by the actual test. At present, China's production of brick, scaling rate is generally 3-4%; length ratio put clay brick for 1-2.5%.

8, thick skin: refractory brick more than 150 mm, should consider two pressures.

Through the above simple introduction I hope can help to you, we produced the high quality and low price firebrick , please contact us if you have the need.

Cause and prevention method of refractory brick burst

Firebrick occurs burst when experiencing thermal shock, the simple reason there is expansion and contraction, and the reason is prone to burst firebrick type as follows:

1.The refractory brick is composed of mineral quartz, tridymite, cristobalite composition, the temperature change is accompanied by a transformation of the crystalline form of the quartz, resulting mutations volume, thermal shock so that the refractory bricks easily burst.

Magnesia or magnesia-chrome brick, due to the thermal expansion coefficient, thermal firebrick burst prevention

1.The use of insulating firebrick, insulating firebrick with insulation due to the role of firebrick inside low stability, not easy to burst.

2.To avoid thermal shock, slow heating and cooling can be effective in preventing refractory bricks burst.

3.Select the heat transfer coefficient is relatively high, toughness good bricks, can reduce the probability of bursting.

How to choose suitable refractory brick

       Choose our own firebrick is very important, first of all we must understand what is firebrick, you should know the parameters and dimensions of refractory brick.

We commonly divided into three main firebricks; the first one is common, ordinary type is one of our more common bricks, the main difference lies in the shape of firebrick less than other entrant. Another is now using more and more, is heterosexual bricks, shaped refractory bricks are also more popular in recent years, a new type of refractory brick, its weight is generally around 16 kg, which is about firebrick itself with three concave corner, shaped refractory bricks are now a lot of very suitable refractory masonry, is also the best choice for most people, and even more groove-shaped refractory bricks than the average of about three firebrick. Another is the standard firebrick, more suitable for this firebrick refractory masonry in general, no special requirements. If there is no special requirements for masonry can choose a standard firebrick.

We can not be at the time of purchase on the types of refractory bricks to choose their own bricks, you can also choose from the color up on the market of yellow and yellow clay firebrick belong, as well as that square brick general observation that species are varied and some relatively bright colors, such as red, brown, white, red, etc., there is usually relatively shallow aluminum brick color white more.

          We choose the firebrick or from many different perspectives, I hope you read this article on to choose your own firebrick have some help.

Mullite Insulating Firebrick,Insulating Firebrick,Refractory Brick,Firebrick,Fire Brick,Refractory FireBrick

Mullite Insulating Firebrick

Light Weight Mullite Insulation Brick can be widely used as lining or insulation layers of various industrial furnaces and kilns in metallurgical industry, machine building industry, ceramic industry, chemical industry. 

Several methods of refractory brick masonry

Refractory brick masonry is divided into: 1, flat bond 2, side wall 3, vertical wall, next we will have a detailed description of these there methods.

1. Refractory brick - laid flat method

Flat wall is mostly for furnace wall, there are a few for the bottom most layer. In China, the most common flat wall, brick wall "with a" bond. Circular bricklaying (like the wall of blast furnace is the bond that).

2. Refractory brick side wall

The side masonry method mainly used in two parts: one is the brick layer, such as the open hearth and the bottom of the heating furnace; two is the side masonry arch, such as the open hearth furnace steel tapping whole arch.

3. Refractory brick - vertical masonry method

Vertical - also called soldier, mainly used in two parts: one is the top bottom, such as the open hearth furnace bottom and furnace bottom; two is the working layer of bottom, such as the open hearth bottom.

As straight standard brick (230x114x65 mm) as an example, laid flat and its maximal plane (230x114 mm). In a horizontal position; side of the side block (also known as the mid plane, 230x65 mm) in a horizontal position; vertical masonry is small (114x65 mm) in a horizontal position

Carbon free Brick,Low Carbon Brick,Firebrick,Fire Brick,Refractory Brick,Refractory Firebrick,Magnesia Carbon Brick

Carbon free Brick

Low carbon magnesia carbon brickhttp://www.chinafirebrick.com/5Carbon-free-Brick.html using with crystal magnesite, fused corundum, fused spinel, high purity and ultrafine graphite and nano composite antioxidant as raw materials, which are used for ladle slag line. Low carbon and carbon-free corundum spinel bricks are used for ladle lining and bottom. It can realize ladle low carbon and carbon-free to meet the needs of high grade and ultra-clean steel. The products are characterized by corrosion resistance, penetration resistance, erosion resistance, spalling resistance and good integrity, to meet the need of complete refining ladle. It is the leading level in the domestic.
 

Clay Insulating Bricks,Insulating Brick,Firebrick,Refractory Brick,Clay Brick,Refractory Firebrick

Clay Insulating Bricks

Produced with unique advanced technology, the clay and high alumina heat insulating bricks possess the characteristics of high intensity for pressure and good thermal shock stability. The use of the bricks can reduce the heat capacity of kiln walls and promote the heat efficiency of kilns. The product is applicable for constructing industrial kilns and inner lining of kilns.