High Quality Magnesia Carbon Bricks Manufacturer

Magnesia carbon bricks is mainly made of high melting point basic oxide magnesium oxide and high melting point carbon material which is difficult to be infiltrated by slag as raw materials, and then various non-oxide additives are added. Finally, the non-burning carbon composite refractory is made of carbon binder. Often used in converter, ac furnace, dc arc furnace lining, ladle slag line and other parts.

Magnesia carbon bricks as a kind of composite refractory material, makes good use of magnesia's strong resistance to slag erosion, high thermal conductivity and low expansibility of carbon, and compensates the biggest shortcoming of magnesia's poor flaking resistance. Its main characteristics are good high temperature resistance, strong slag resistance, good thermal shock resistance, low temperature creep.

The series of refractory brick products are mainly used for converter, ac arc furnace, dc arc furnace lining, ladle slag line and other parts. The main raw materials of the brick include fused magnesia or sintered magnesia, flake graphite, organic binder and antioxidant.

The refractory materials used in the early ladle slag line were directly bonded magnesia-chrome bricks, electrofused fused magnesia-chrome bricks and other high quality alkaline bricks. After mgo-c brick was successfully used in converter, mgo-c brick began to be used in slag line of refined ladle, and good results were obtained.

The main problem caused by the decrease of carbon content in magnesia-carbon refractory brick is the decrease of thermal shock stability and slag permeability resistance. As is known to all, the decrease of carbon content in magnesia-carbon brick leads to the decrease of thermal conductivity and the increase of elastic modulus, which leads to the deterioration of thermal shock resistance stability of brick. With the decrease of carbon content, the wettability of slag and molten steel is enhanced, and the permeability of slag and molten steel becomes worse.

Zhengzhou Rongsheng Kiln Refractory Co.,Ltd. is professional refractory material product, quality is stable and reliable, welcome to consult and purchase.

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Clay Insulation Bricks Manufacturer

Clay insulation bricks is also known as clay thermal insulation brick, mainly refractory clay as the main raw material preparation of Al2O3 content of 30%~48% thermal insulation refractory products. The production technology mainly USES the method of burning the additive and the method of foam.

The clay insulation bricks main refractory clay, drift-beads, clay clinker as raw materials, mixed with binder and sawdust, through the batching, mixing, molding, drying, burning, the final volume density of 0.3~1.3g/cm3 products. In general, the production of clay thermal insulation bricks accounted for more than half of the total production of thermal insulation bricks.

Clay insulation brick is generally used in industrial kiln heat insulation according to its performance characteristics, which can effectively reduce the heat loss of kiln, save energy consumption, and reduce the quality of thermal equipment.

The advantages of this series of insulation brick products are good performance and low price, can be used for the parts without strong high temperature molten material erosion and erosion. Some can also be in direct contact with the flame on the surface of a layer of fire resistant coating, effectively reduce erosion by slag and furnace gas smoke erosion, reduce damage. The service temperature can reach 1200℃~1400℃.

Zhengzhou Rongsheng Kiln Refractory Co.,Ltd. is professional refractory material manufacturer, production of various refractory products, a complete range of automation equipment, welcome to consult and purchase.

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Refractory Cement Manufacturing

With high-quality bauxite and high-quality lime as raw materials, according to a certain proportion into an appropriate amount of raw materials, after sintering aluminate as the main component of the clinker, and then ground into fine powder, made of fire resistant hydraulic cementitious materials, can be called refractory cement.

Refractory cement manufacturing of fire resistance is not less than 1580 degrees Celsius. According to different composition can be divided into aluminate refractory cement, low calcium aluminate refractory cement, calcium magnesium aluminate cement and dolomite refractory cement.

The main raw material of refractory cement is dolomite, which is made of high temperature cement by adding apatite and iron ore. The use of high temperature can produce chemical reaction and hardening materials, such as refractory sulfate, borate and phosphate as cementing materials such as high temperature resistant cement.

In order to ensure the construction of the series of refractory material have enough time to complete the mixing, transportation, molding and other processes, the cement initial setting time should not be too short; After construction, in order to cement as soon as possible to harden, produce strength, so the final setting time should not be too long. The initial setting time of refractory cement shall not be earlier than 45 minutes and the final setting time shall not be later than 390 minutes.

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Mullite Insulation Bricks For Sale

Mullite insulation brick mullite as the main crystalline phase of the refractory high aluminum we call mullite light insulation brick. Generally, the content of alumina is between 40% and 70%. In addition to mullite, the mineral composition of the lower alumina also contains a small amount of glass phase and stone quartz.

Mullite lightweight insulation brick has the advantage of flame contact and is used directly for lining of high temperature kilns. Mullite lightweight thermal insulation brick is a kind of refractory thermal insulation material widely used in new industrial kilns and high temperature equipment. This series of insulating bricks are mainly used in the top of hot blast furnace, the body and bottom of blast furnace, the heat storage room of glass melting furnace, ceramic sintering kiln, and the dead corner lining of petroleum cracking system.

Mullite insulation brick product characteristics:

1. Low thermal conductivity, good thermal insulation effect;

2. Low heat melting, because of low thermal conductivity, mullite series lightweight heat insulation bricks store very little heat energy, and the energy saving effect is obvious in intermittent operation;

3. Low impurity content and very low iron box alkali metal oxide content, therefore, high fire resistance;The higher aluminum content makes it maintain good performance in reducing atmosphere;

4. High thermal compressive strength, high fire resistance, up to 1790℃.The starting temperature of softening under load is 1450-1600℃.Normal temperature compressive strength 2-6mpa.Good thermal shock resistance;

5. Accurate appearance size, speeding up the masonry speed, reducing the use of refractory clay, ensuring the strength and stability of the masonry, thus extending the lining life;

6. Can be processed into special shapes to reduce the number of bricks and masonry joints.

We are an industrial refractories manufacturer, specializing in the manufacture of various refractories, a complete range of high quality, welcome to purchase.

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High Temperature Refractory Cement Supplier

Generally with high quality bauxite and high quality lime as raw materials, according to a certain proportion into an appropriate amount of raw materials, after sintering aluminate as the main component of the clinker, and then ground into fine powder, made of fire resistant hydraulic cementitious materials, known as refractory cement.

The fire resistance of high temperature refractory cement is not less than 1580 ℃. According to different composition can be divided into aluminate refractory cement, low calcium aluminate refractory cement, calcium magnesium aluminate cement and dolomite refractory cement.

High temperature refractory cement refers to the refractory is not less than 1580°C of cement. Refractory cement with bauxite and limestone as raw materials, calcined to produce calcium aluminate as the main component, alumina content of about 50% clinker, then ground into hydraulic cementitious materials.

This series of refractory cement can be divided into aluminate refractory cement, low calcium aluminate refractory cement, calcium magnesium aluminate cement and dolomite refractory cement. Refractory cement can be used to cement various refractory aggregates (such as corundum, calcined bauxite, etc.) into refractory mortar or concrete, used for cement rotary kiln and other industrial kiln lining.

In order to ensure that there is enough time to complete the mixing, transportation, molding and other processes, the initial setting time of high temperature refractory cement should not be too short. After construction, hope cement can harden as soon as possible, produce strength, so final setting time should not be too long. The initial setting time of refractory cement shall not be earlier than 45 minutes and the final setting time shall not be later than 390 minutes.

Zhengzhou Rongsheng Kiln Refractory Co.,Ltd. Production and processing of a variety of refractory material. Welcome to our factory to visit and negotiate with the majority of users, our refractory products of high quality, safe and reliable use, qualification certification is complete, welcome to contact us.

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High Alumina Refractory Brick Price

High alumina refractory brick is a kind of aluminum silicate refractory with the content of over 48% alumina. It is formed and calcined from bauxite or other materials with higher alumina content. High thermal stability, fire resistance in 1770℃ above. Slag resistance is better. High aluminum brick is the most widely used refractory brick. Therefore, the high alumina brick price directly affects the production cost of enterprises.

Production technology of high alumina brick and clinker clay brick more similar, the difference is that the ingredients in the clinker ratio is higher, can be as high as 90 ~ 95%, before breaking the clinker grading sorting and screening in addition to iron, firing temperature is higher, such as Ⅰ, Ⅱ high alumina brick with tunnel kiln firing when the general is 1500 ~ 1600 ℃.

The high alumina brick compares clay brick and the fireproof of half silicon brick wants tall, reach 1750~1790℃, belong to advanced fireproof material, fireproof is taller, the performance is better, the price is opposite also can weighted rise.

Because Al2O3 is high in high aluminum products, mixed mass is less, the formation of fusible vitreous body is less, so the softening temperature under load is higher than that of clay bricks, but because mullite crystals do not form a network, the softening temperature under load is still not as high as that of silicon bricks.

High alumina refractory brick Al2O3 more, close to the neutral refractory, can resist acid slag and alkaline slag erosion, because it contains SiO2, so the ability to resist alkaline slag is weaker than the ability to resist acid slag. This series of refractory bricks are mainly used for lining blast furnace, hot blast furnace, electric furnace, blast furnace, reverberatory furnace and rotary kiln. In addition, high aluminum brick is also widely used as open hearth regenerative lattice brick, pouring system with plug head, shuikou brick. But the price of high alumina refractory brick wants to be taller than clay brick, reason can satisfy the place that asks with clay brick need not use high aluminium brick.

We are a high quality refractory bricks manufacturers, refractories variety is rich, the variety is complete, product quality is stable and reliable, welcome to consult and purchase, we will serve you wholeheartedly.

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Chrome Corundum Bricks For Sale

Chrome corundum brick is a kind of solid solution synthesized by melting alumina and chromium oxide at high temperature according to a certain proportion. The adoption of special refractory technology to make refractory bricks can improve and improve the internal quality of products and improve the high temperature performance of products. It has the characteristics of high fire resistance, high strength, good thermal shock stability and strong corrosion resistance.

Chrome corundum refractory brick is widely used in metallurgy, glass, carbon black, petrochemical and other industries for its resistance to erosion, abrasion, erosion and spalling.

The chrome corundum brick has a longer service life than corundum material, and its wear resistance and corrosion resistance are obviously better than other kinds of brick. High performance chrome corundum brick has high density, high strength and better resistance to airflow and abrasion than corundum brick.

Zhengzhou Rongsheng Kiln Refractory Co.,Ltd. chrome corundum brick is mainly used for rolling furnace slide track, steel platform, groove and other parts of industrial furnace easy to wear. Chrome corundum brick is a high - grade refractory, welcome to consult and purchase.

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Method Of Use Of Refractory Castable

How to use refractory castable correctly? There are mainly the following ways, we collated these materials for your reference. If you encounter any problems in the process, please feel free to contact the online customer service or send me an email, we will be able to answer your questions.

Use of refractory castable:

Check whether the spare parts of the construction machine are in good condition; The material, type, size, layout and welding quality of the anchorage parts, and the expansion compensation of the metal anchorage parts; Take preventive measures with surrounding refractory bricks and other castable materials; Water quality should meet drinking water standards.

1. Film: made of steel plate or hard wood, steel plate should be coated with demoulding agent, wood to brush waterproof paint should not leak pulp, to have enough strength.

2. Mixing: using a forced mixer, pour the castable into the machine, and take out a small bag of additives and pour in. Dry mix for 2-3 minutes, add water and wet mix for 3-5 minutes, add less water, not more.

3. Vibration: the castable into the mold should be filled immediately with vibratory rod layered vibration, no leakage vibration, to avoid castable segregation and holes. Stir the castable from adding water to use in 20-30 minutes. Expansion joints shall be provided as designed.

4. Curing: after the surface of castable is dry and reaches 70% strength, the mold can be dismantled.

5. Drying: according to different grade and thickness of castable liner and site climate conditions, users can provide enough baking time to ensure that moisture does not burst.

Zhengzhou Rongsheng Kiln Refractory Co.,Ltd. can provide customers with a variety of materials of refractory brick and refractory castable, high degree of automation production equipment, to meet the needs of large quantities of refractory materials.

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Introduction to Low Cement Refractory Castable

Low cement refractory castable is developed on clay combined refractory castable system. It has high density, low porosity, high strength, low wear, good thermal shock resistance and corrosion resistance.

Although the aggregate and powder in the traditional aluminate cement refractory castable have high accumulation density and density, the water consumption is large in the construction process, and many pores are filled by water. After the moisture volatilizes, the pores re-appear and the strength becomes low. Low cement refractory castables, the cement content of 8% or less, the construction of the water consumption is 7% or less, in addition to superfine powder of low cement refractory castable will fill in the process of using the structure clearance, make the structure more compact, porosity will be reduced, so the strength, wear resistance and other properties compared with traditional aluminate cement refractory castable is better.

The production methods of ultrafine powder are divided into mechanical crushing method and chemical preparation method. The former has simple production technology, large output, no agglomeration of micro powder and low cost. The product made by the latter has high purity, small particle size and easy to control its shape and particle size distribution, but high cost and easy to aggregate. In unshaped refractory bulk refractory, ultrafine powder technology is widely used in the varieties: active SiO2 powder and powder - Al2O3 powder, followed by SiC powder, high aluminum powder, white corundum powder, zirconium powder and spinel powder. Generally speaking, the smaller the particle size of ultrafine powder, the greater the performance improvement of refractory castable, but the cost will also rise. In the actual use of ultrafine powder, powder not more than 5 m accounts for 40% - 80%.

Zhengzhou Rongsheng Kiln Refractory Co.,Ltd. is professional refractory castable manufacturer, production of various refractory products for more than 20 years, rich production experience, strong technical force, we sincerely hope that you have refractory material demand customers come to contact us.

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