Refractory Blog Archives - Rongsheng Refractory Castable Manufacturer

High Alumina Mortar in Pakistan

June 16, 2021December 3, 2019 by rsrefractorycastable

High alumina mortar is mainly calcium aluminate, alumina content of about 50% clinker, belongs to aluminate cement. High alumina mortar advantage outstanding, it belongs to hydraulic cement, the main mineral composition is calcium silicate.

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High alumina mortar advantage:

1. Fineness: the finer the cement particles are, the larger the specific surface area is, the faster and more sufficient the hydration reaction is, and the earlier and later the strength is higher.

2. Setting time: in order to ensure that there is enough time in the construction to complete the mixing, transportation, molding and other processes, the cement initial setting time 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.

3. Volume stability: the uniformity of the volume of cement slurry during the setting and hardening process is called volume stability of cement. If the volume change is not uniform, that is, the volume stability is poor, prone to warpage and cracking, reduce the quality of engineering and even accidents.

High alumina refractory mortar lining for baking, to pay special attention to the slow baking. If there is still a lot of steam coming out after 350 degree heat preservation, the heating rate should still be slowed down. Under the condition of poor ventilation and difficult discharge of water and gas, the insulation time should be extended appropriately. And when baking with heavy oil, to prevent heavy oil spray in the furnace lining surface, in case of local blowout. When using wood to bake, direct contact with the flame often causes local heating too urgent, should be protected. Still have the cooling that is to refractory cement furnace lining also should slow, avoid forced ventilated.

The high alumina mortar advantage is obvious, because it has excellent characteristics of quick setting, high strength, high temperature resistance, one day strength can reach 80%, fireproof can reach 1450 degrees, fireproof concrete strength can reach 55MPa, is one of the excellent high temperature binder materials in industrial kiln engineering. High aluminum mortar is the main raw material for preparing unshaped refractory. Gypsum bauxite expansive cement, self – stress cement and other special purpose cement. It also plays an important role in construction, repair, resistance to sulfate erosion and winter construction.

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Zhengzhou Rongsheng Kiln Refractory Co.,Ltd. is professional production refractory factory. With many years of manufacturing experience, strong technical force, complete product categories, sincerely welcome all users to come to our factory to visit and purchase, we will serve you wholeheartedly.

Buy Low Cement Refractory Castable

June 16, 2021December 2, 2019 by rsrefractorycastable

Choose Refractory castable, buy low cement Refractory castable, choose Zhengzhou Rongsheng Kiln Refractory Co.,Ltd. This is a powerful low cement refractory castable manufacturers, many customers will choose to purchase our refractory castable, so the refractory products we produce are worth buying.

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Due to the stable quality and reasonable price, many customers have given us a great appreciation after using the refractory castable manufactured by RS group. We are committed to the production of high quality refractory products, to provide customers with intimate service, and the relationship between the customer harmony, many customers will choose to cooperate with us for a long time.

Zhengzhou Rongsheng Kiln Refractory Co.,Ltd. Has a wide reputation, excellent product quality and reliable, focus on production and manufacturing technology, so that RS group gradually grow up. Our low cement refractory castable manufacturers are exported to the United States, South Korea, India, Japan, Kuwait, Malaysia, Pakistan and more than 60 countries and regions. More and more customers are interested in us, and contact us to start cooperation. We look forward to your enquiry and will be happy to serve you.

Nowadays, with the development of network technology, users have more choices in choice low cement refractory castable manufacturers, and they can purchase refractory castables they need without leaving their homes.

Network procurement of refractory castables, perhaps the biggest concern is safety and reliability, because we do not know each other very well. RS group reminds you to pay attention to the manufacturer’s website on the transaction case, see the actual transaction situation, to learn more about the consultation content, also can call, carefully understand the consultation.

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We are a low cement refractory castable manufacturers, focusing on the production of high quality refractory castables, a complete range of products, stable and reliable quality, complete certification qualifications. Production of high quality materials, superior performance, this is the majority of users choose our reasons.

High Alumina Cement Made in China

June 16, 2021November 29, 2019 by rsrefractorycastable

The high alumina cement manufacturing is a cementitious material with the properties of fast hardening, high strength, heat and corrosion resistance. Where the calcium aluminate based, alumina content of about 50% of the clinker, grinding hydraulic cementitious materials, known as high aluminum cement. Mainly used for urgent projects, such as pressure prevention, road and special repair projects, can also be used for winter construction projects.

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As is known to all, high aluminum cement is made of bauxite and lime as raw materials, in accordance with a certain proportion of preparation, after calcining, grinding made of a kind of aluminate as the main mineral composition of hydraulic cementitious materials, also known as aluminate cement.

In the high alumina cement manufacturing, the heating temperature and the time to reach the highest temperature of the single pouring body of different kinds of high alumina cement are determined by the heating characteristics and content of the calcium aluminate contained in the pouring body. Fast C12A7 and C4AF have higher calorific value. Therefore, the calorific value of high aluminum cement will also contain the aluminate different and change. So, the quantity that chooses refractory cement and quality are very important.

High alumina cement characteristic:

1. Early strength characteristics: its early strength increase rate is much higher than fast hard Portland cement, suitable for emergency repair engineering, but later strength will be reduced, limit the use in structural engineering.

2. Hydration heat is larger: early cement hardening heat release, and with the same label Portland cement, only a day can give out 70~80% of the total hydration heat. Due to several exothermic heat, it is suitable for low temperature curing concrete engineering.

3. Strong sulfate resistance: the hydration process does not precipitate free calcium hydroxide but produces aluminum hydroxide gel, forming a protective film on the particle surface. The corrosion resistance was decreased during the later crystal transformation.

4. High temperature resistance: high aluminum cement can be used as the cementing material of heat resistant concrete, configured into heat resistant concrete.

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Above is the introduction of high alumina cement manufacturing, if you need to know more, welcome to contact us. We are a professional refractories manufacturers, production experience, products exported to more than 60 countries and region, welcome customers to purchase!

Low Cement Castable Manufacturers in Italy

June 16, 2021November 28, 2019 by rsrefractorycastable

Low cement castable manufacturing is aluminate cement as the binder, CaO content less than 2.5% of the refractory castable, collectively referred to as low cement castable. Unlike traditional castables, low cement castables replace most or all of the cement with superfine powder with condensed bond, which has the same or similar chemical composition as the main material.

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The low cement castable is often used in the front and back of the cement kiln, the front of the cooling machine, such as high temperature resistance parts and other industrial kiln lining. Low cement castable manufacturing, mainly used in metallurgy, electric power, nonferrous metals, petrochemical, building materials and other industries. For example, the bottom of the glass kiln trough, the front end of the cooling machine of the kiln door cover before and after the cement kiln and other parts of high temperature resistance, the front and rear kiln mouth, coal injection pipe, etc.; Heating furnace, soaking furnace and other heat treatment furnace; Intermediate frequency induction furnace lining, chemical catalytic cracking reactor high temperature wear resistant lining, other industrial furnace lining.

Because the superfine powder has replaced part of aluminate cement, the quality of low cement castable manufacturing products is stable and reliable, the price is reasonable and preferential, and the fire resistance is high. Welcome to consult.

Low cement castable characteristic:

1. Low CaO content, reduce the formation of low eutectic, improve the refractory temperature, compressive strength and slag erosion resistance;

2. Low water consumption, low porosity and high volume density;

3. The high temperature strength increases with the increase of heat treatment temperature.

4. The ratio of particles can be adjusted according to the needs of users and configured into artesian pouring material and pump pouring material;

5. High refractory temperature, high service temperature;

6. According to different materials can be configured clay low cement castable, high aluminum low cement castable, corundum low cement castable;

7. According to the different technological conditions, the vibration type castable and artesian type castable can be made by properly adjusting the particle ratio.

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Zhengzhou Rongsheng Kiln Refractory Co.,Ltd. main refractory castables are: high aluminum castable, low cement castable, corundum wear resistant castable, corundum mullite castable, steel fiber reinforced wear resistant castable, anti-seepage castable, boiler specific castable, etc. If you want to know more about refractory castable products, you can contact us, we will be happy to serve you.

Steel Fiber Refractory Castable in Australia

June 16, 2021November 27, 2019 by rsrefractorycastable

Steel fiber refractory castable used in boiler and furnace outlet, top, side wall and other parts. Widely used in steel, metallurgy, chemical and building materials industries. Steel fiber refractory castable sales, use method and concrete basically consistent. After the formulation and raw materials are mixed and processed evenly, the vibrator is used for compaction, and then it can be cured and heated. According to the different conditions of the site, the construction quality of refractory castable also needs to be guaranteed.

Steel fiber refractory castable advantage

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Steel fiber castable has obvious characteristics, high strength, good toughness and good thermal shock stability. It also has the characteristics of anti-spalling and strong abrasion resistance, and is widely used in cement rotary kiln kiln mouth, cooling machine, coal jet pipe, decomposition furnace, preheater and other parts.

This series of refractory castable is mainly used in the parts where the temperature ladder variation is easy to cause the damage of furnace wall. Steel fiber refractory castable sales, the use of special grade bauxite clinker as clinker, high quality bauxite clinker and corundum powder as the matrix, ultramicine powder and other composite materials as a binder and additives, plus stainless steel heat resistant steel fiber made.

In addition to the conventional high temperature wear resistance, in addition, a certain amount of heat-resistant stainless steel fiber is added in the ingredients to prevent the swelling of the aggregate and matrix in the material under high temperature, and the change of temperature when the furnace is started and stopped, which causes the destruction of the furnace wall.

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Steel fiber refractory castable sales with high strength high temperature resistance, impact resistance, thermal shock resistance, good wear resistance and other characteristics. It belongs to hydraulic refractory castable.

That’s all we have to share today, and I hope it helps. If you want to know more about refractory castable, please feel free to contact us.

What is High Alumina Castable Refractory

June 16, 2021November 26, 2019 by rsrefractorycastable

As one of the high temperature resistant materials, the high aluminum castable is usually constructed by pouring method, which becomes the integral lining. High alumina castable refractory sales, is high alumina clinker and powder as the main raw materials. Aluminate cement is used as binding agent and admixture is added.

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High aluminum castable refractory sales, characteristics, simple production process, convenient construction, high temperature structure strength, acid and alkali chemical erosion resistance.

This series of refractory castable is to add micro-expansion agent in the preparation process of ordinary high aluminum castable, and use the principle of irreversible expansion of bluestone in high temperature to prevent shrinkage of pouring liner and improve the air tightness of the whole structure.

High alumina castable refractory sales, construction water consumption is low, so it has a high density and low porosity. High alumina castable has good volumetric stability at high temperature. Although it is a non – burning refractory, its volume decreases after drying and calcination. It not only has higher curing strength at room temperature, but also does not reduce the strength after medium and high temperature treatment. The absolute strength is 3-5 times of that of traditional refractory castable. The content of calcium in castable is only 1/4 to 1/3 of that of traditional castable. Thus, the number of low melting phases in refractory castable is reduced, resulting in a significant improvement in high temperature function.

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We are a professional manufacturer of refractory materials, high aluminum castable refractory sales of high quality, reasonable cheap price, rich production experience, strong technical force, with a sound production management system, professional technical construction team, and excellent business sales team, production high degree of automation. Welcome you to come to consult and purchase, we will serve you wholeheartedly.

Mullite Refractory Castable Production

June 16, 2021November 25, 2019 by rsrefractorycastable

As we all know, mullite refractory castable is a kind of high quality refractory. Quick and convenient construction, stable function, suitable for all kinds of industrial kilns. Our plant mullite refractory castable sales, high quality, many advantages, price concessions, you are welcome to consult.

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Mullite refractory castable is often used as a thermal barrier coating in c/c composites. Suitable for working lining or heat insulation lining of various industrial kilns, effectively realize high temperature and energy saving.

This series of refractory castable has high strength and is mainly used in the bottom, wall and door of industrial kilns. Effectively eliminate all kinds of hidden dangers. Compared with ordinary castable, the heat loss of kiln can be reduced by 25%-35% and fuel can be saved by about 10%.

Mullite refractory castable sales, widely used in the petrochemical industry heating furnace, atmospheric pressure furnace, sulfur recovery device, heat insulation layer, other industrial furnace door, fire hole, hole lining observation.

It has the advantages of high temperature structure strength, low temperature creep rate, small thermal expansion, strong resistance to chemical erosion and thermal shock. And is a maintenance, stripping, baking time is short, will not burst and other advantages.

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Zhengzhou Rongsheng Kiln Refractory Co.,Ltd. is high quality refractory castable supplier, productive refractory product variety is complete, reasonable price concessions, refractory products classification in detail, is worthy of customer trust quality manufacturers. Welcome customers to consult and purchase.

Low Cement Castable For Heating Furnace

June 16, 2021November 22, 2019 by rsrefractorycastable

Low cement castable refers to the refractory castable combined with calcium aluminate cement, the castable with CaO content less than 2.5%, and the castable with the content of calcium aluminate cement about 1/2 to 1/3 of that of ordinary calcium aluminate cement castable. Low cement castable characteristics outstanding, high quality, favorable price.

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According to the operating conditions of the heating furnace, the characteristics of the low cement castable used are described below.

1. Good thermal shock stability

The content of low cement castable Al2O3 is 55%-67%. After drying and firing at 1400℃, the compressive strength is 15-30mpa and 40-65mpa respectively. Compared with low cement castable with high aluminum content and strength, its thermal shock stability is better.

2. It has micro-expansibility

In the low cement castable add appropriate amount of expansion agent and materials containing aluminum and silicon, so as to produce micro-expansion when using, to prevent the formation of cracks.

3. Good sintering performance

By adding proper amount of sinter and other materials into the low cement castable, the working layer of the wall can be sintered and formed as a whole in the process of using at 1000-1350℃, so as to adapt to the working conditions of its double-sided heating.

In the low cement castable matrix, most of the calcium aluminate cement is replaced by superfine powder with the same or similar chemical composition as the main material of the castable. Therefore, this series of refractory castable is a kind of refractory with hydration and aggregation.

The low cement castable characteristics of prominent. After casting molding, less cement compounds are generated during curing, and there is no large amount of hydration bond damage during heating and baking, resulting in the decrease of strength at medium temperature.

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We are a professional refractory castable manufacturer, the production of low cement castable characteristics of remarkable, high quality, certification qualification complete, welcome to consult and purchase.

Quality Low Cement Castable

June 16, 2021November 21, 2019 by rsrefractorycastable

Low cement castable manufacturing, mainly refractory aggregate, refractory powder, appropriate amount of ultrafine powder, appropriate amount or a small amount of calcium aluminate cement and micro dispersant composition.

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Low cement refractory castable is mainly used in metallurgical, petrochemical, mechanical manufacturing, electric power and building materials industrial kilns. Now this refractory castable has replaced the traditional fired refractory as the backing. Low cement castable manufacturing can also be used for heating furnace, heat treatment furnace, electric furnace cover, shaft kiln, rotary kiln, blast furnace iron ditch, ladle, ladle lining.

This series of refractory castable is supplied in the form of scattered dry powder. In construction, clean water is added according to the requirements. After stirring, it can be vibrated or rammed. High temperature performance of low cement castable, high strength, wide range of temperature, basically no shrinkage after high temperature, overcome the previous characteristics of refractory concrete shrinkage. Easy to store, transport and use.

Low cement castable manufacturing is widely used in power plant, boiler, melting furnace, heating furnace, soaking furnace, heat treatment furnace and induction furnace lining different parts. It has the characteristics of anti – penetration, anti – erosion, anti – impact, anti – wear, good mechanical properties, strong structural integrity of furnace body, air tightness is better than brick furnace. The service life is prolonged, the cost of repairing furnace is saved, and the economic benefit is remarkable.

Advantages of low cement castable:

1. The low content of CaO in the castable can reduce the formation of low eutectic phase in the material. Thus the fire resistance, high temperature strength and slag erosion resistance are improved.

2. During construction, the mixing water consumption of low cement castable is only 1/3 to 1/2 of that of ordinary castable. Therefore, the porosity is low and the volume density is high.

3. After pouring molding, the cement compound generated in curing is less, and there is no large amount of hydration bond destruction during heating and baking, which leads to the decrease of the medium temperature strength. However, the strength gradually increases with the increase of heat treatment temperature.

4. The strength composition of the refractory castable can be properly adjusted to be composed of artesian castable and pumped castable.

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We are a high quality manufacturer of refractories, producing low cement castable for sale of high quality at reasonable prices. Welcome customers to consult and purchase.

Clay Refractory Castable For Sale

June 16, 2021November 20, 2019 by rsrefractorycastable

With the rapid economic development, a variety of engineering construction is also more and more, I plant production of clay refractory castable price cheap in a variety of industrial furnace widely used, the service temperature is about 1000-1200℃.

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The content of aluminum in the clay refractory castable is about 45%. The compressive strength is about 30Mpa. If the thermal shock requirements are high, we must use grade III material for aggregate production, now, there are many manufacturers using waste grade III brick clay aggregate, aluminum content and fire resistance are no problem, but the quality will be almost.

Therefore, the purchase of clay castable can not only look at the price, the price determines the quality, not empty. For castable made from III grades of waste brick and III grades of clinker, the price difference is price varies a large. And have a few clients, a price that listen to, think which manufacturer price is low clinch a deal with which which, actually this among them has a lot of quality discretion problem to be in inside.

There is also the quality of the silicon powder used in the production of the addition. Some manufacturers add low-grade silicon powder into it, and the strength of the late castable will have some problems. Silicon powder castable of poor quality, after drying, with a hand on the skin, not to mention strength and use time. There is no guarantee of user requirements. RS group produced clay refractory castable price reasonable, high quality, customer trust, widely used and exported to more than 60 countries and regions in the world.

If it is some parts of general erosion is not high, the temperature of 10001000-1200℃ or so, it is recommended that you choose clay castable. So, the use temperature that must see furnace and erosive sex decide when choosing.

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If you want to know more about clay refractory castable price, please feel free to contact us. We can produce a variety of indicators, a variety of sizes of refractory castable products.