Refractory Blog Archives - Rongsheng Refractory Castable Manufacturer

Corundum Mullite Castable Composition

June 16, 2021May 28, 2020 by rsrefractorycastable

First, we need to know that corundum mullite castable mainly uses dense corundum and mullite as aggregate. Then white corundum powder, Al2O3 powder and mullite powder are used as the fine powder to make the high quality refractory castable. The corundum mullite castable supply is based on price and quality. Welcome to consult purchasing.

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Corundum mullite castable has remarkable properties and many characteristics. It has the common advantage of corundum castable and mullite castable. Corundum mullite castable supply provides high temperature strength, thermal shock resistance and structural spalling resistance, good thermal shock resistance, high softening temperature under load, low creep rate at high temperature and good chemical erosion resistance. Can be widely used in large power plant boiler anti-wear lining and other high temperature furnace lining.

We recommend corundum mullite castable to be used in front and back of large cement kilns, coal injection pipes and other industrial furnace linings. The mullite contained in this series of refractory castable is rare in nature, and the mullite used in industry is artificially synthesized, which has the characteristics of high purity, high density, good structure, low creep rate, small thermal expansion, good thermal shock resistance and strong chemical erosion resistance. Widely used in refractory materials and other industries, corundum mullite castable uses high quality refractory materials and has good thermal shock resistance.

Corundum mullite castable supply tube furnace can also be used in petrochemical industry, light diesel oil, ethane cracking furnace lining, atmospheric and vacuum furnace and sulfur recovery unit, steam boiler, making insulating layer, two barrel and pipe insulation monolayer, and other industrial furnace door, see the fire hole, observation hole door lining, large power station boiler wear lining, lining of gasifier, circulating fluidized bed boiler and cement rotary kiln coal injection pipe and other high temperature furnace lining.

This series of refractory material will be manufactured with appropriate powder. The addition of micro powder can fill the intergranular space, improve the internal structure, and produce a cohesive effect to densify; At the same time, it can significantly improve the fluidity and greatly reduce the construction water consumption. At 110℃, the addition amount at 24h is more than 8%, the shrinkage of castable increases, and there are many cracks. It is advisable to take 4%~5%, and the physical properties of castable with different content of micro-powder are different.

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If you are interested in corundum mullite castable, please contact Zhengzhou Rongsheng Kiln Refractory Co.,Ltd. Our company has been producing and selling refractory materials for many years. The quality of our products is widely favored by customers. Our products are sold all over the country, and are exported to Russia, Japan, Syria, India, Turkey, Vietnam, Colombia and other countries. Welcome customers to visit our company on the spot.

High Alumina Low Cement Castables Sales

June 16, 2021May 27, 2020 by rsrefractorycastable

High alumina low cement castable is a kind of large amount of castable in the amorphous materials, that is, the calcium aluminate cement is about half of the ordinary cement castable or one-third of the castable. Compared with the general high aluminum castable, the high alumina low cement castables strength and erosion are greatly improved by using ultra-fine powder to reduce the cement content. It not only increases the volume density, but also reduces the porosity, and at the same time, increases the service life.

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High alumina low cement castable is developed on the basis of clay combined with refractory castable. Its main varieties are low cement, ultra-low cement, no cement or ultrafine powder and sol and other refractory castable. It is a combination of most of the advantages of refractory castable in one, with high density, low porosity, high strength, low wear, thermal shock and corrosion resistance properties of high quality refractory castable. Use effect is superior, social economy benefit is remarkable. The outstanding characteristic of high alumina low cement castables is density and high strength, which brings a lot of benefits for the use, but brings trouble to the baking. If the baking is not done properly, the phenomenon of spalling or blasting may occur easily. Therefore, for the high aluminum low cement castable baking to formulate a reasonable oven curve, but also the use of excellent explosion-proof admixture, so that the water in the body of refractory castable molding smoothly discharged, do not cause any side effects.

This series of refractory materials are used in metallurgy, petroleum, petrochemical, electric power, building materials and other industrial kilns, and a large part of them have replaced firebrick. However, as a manufacturer of refractory castables, we will still produce some high aluminum and low cement castables with different grades and different body densities according to the users’ different furnace types, temperatures and operating environments. Of course, different grades, different body densities and low cement castables also have different prices. The characteristics of high alumina low cement castables, also according to different levels of refractory powder, and different grades of the main material and different grades of the combination of medium, to determine the quality of the product. So that smaller particles, larger than the table two product, better sintering capacity, so that the castable can be more suitable for the user’s application.

In practical application, especially in construction, it is also very important to control the amount of water added. Generally, when leaving the factory, the manufacturer will attach the construction instructions of castable, in the construction, must be in strict accordance with the construction instructions, the refractory castable pouring good, good maintenance, play a better effect. All in all, regardless of production or application, different grades of castable must be determined according to the actual use (temperature, erosion, erosion), so as to meet the different needs of the market.

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High alumina low cement refractory castable has the characteristics of high strength, anti – erosion, anti – wear, excellent performance and so on. Reducing the amount of cement can enhance the thixotropy of castable, that is, the mixing material has a certain form, a little external force can be added to flow, remove the external force to maintain the obtained shape, so this series of refractory castable is also known as thixotropy refractory castable, self-flow castable. Zhengzhou Rongsheng Kiln Refractory Co.,Ltd. are specialized in the production of refractory castable manufacturers, we have professional technical personnel and professional equipment and rich production experience, for your industrial facilities escort. Welcome to visit our company.

Corundum Refractory Castables For Sale

June 16, 2021May 26, 2020 by rsrefractorycastable

Corundum castable is a refractory castable composed of corundum aggregate and powder and binder. Corundum refractory castables has higher mechanical strength and abrasion resistance than high alumina refractory castable and mullite refractory castable. It is mainly used as lining material of various kilns, such as boiler, blast furnace hot blast furnace, heating furnace, ceramic kiln and so on.

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The content of Al2O3 of rigid jade refractory products is more than 90%. The refractory products with corundum as the main crystal phase are made of dispersant, coagulant and stainless steel fiber, which are then compounded in strict accordance with the formula. It has high temperature strength, wear resistance and erosion resistance, high thermal conductivity, thermal shock resistance, corrosion resistance, good sealing performance, quick setting early strong and other characteristics. Corundum castable is generally made of industrial alumina or bauxite after sintering or electric melting, so industrial use belongs to artificial corundum, but the density and hardness of artificial corundum are relatively large, the use effect is also relatively significant.

Corundum refractory castables is widely used in circulating fluidized bed boiler, metallurgy, petrochemical, thermal power industry and other fields. This series of refractory castable can also be customized according to customer requirements. Corundum castable is mainly made of fused corundum and then compounded with a variety of fine powders and high-efficiency additives. The main features are high strength, good volume stability, excellent corrosion resistance, not affected by H2,CO and other reducing gases.

The corundum refractory castables are selected according to the use position and temperature. The specific types can be divided into chromium corundum castables, zirconium corundum castables, brown corundum castables, composite corundum castables, etc. Generally speaking, the chrome castable is mainly used for the lining of carbon black reaction furnace and coal-water slurry gasifier, and the operating temperature is generally above 1700℃. Zirconium corundum castable is mainly used in glass kiln and has the advantage of strong resistance to glass erosion. Brown corundum castable has good wear resistance and can be used for coal injection pipe in power plant, boiler lining, rolling furnace sliding rail, etc. The compound corundum castable is a compound corundum castable which is made by adding specific materials according to the different temperature and environment. Generally used in cement rotary kiln, non – ferrous metal melting furnace and steel industry.

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This series of refractory castable shall be stirred by a forced mixer, with each bag as a whole unit, and then mixed with multiple bags according to the actual amount. When the temperature is low or high, heating or cooling measures must be adopted to meet the requirements of the construction temperature. After the corundum castable is mixed with water, the construction must be completed within 30 minutes. It is strictly prohibited to mix the castable back with water or mix it with water twice.

High Alumina Refractory Castable Introduction

June 16, 2021May 22, 2020 by rsrefractorycastable

High alumina refractory products take up a large proportion in the construction of kilns. With the development of refractory materials, high alumina castable is widely used in kilns due to its convenience in construction. Rongsheng high alumina castable is a refractory castable made of high aluminum raw material as aggregate and powder, adding binder.

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It has high mechanical strength and good thermal shock resistance, anti – wear corrosion and other high – quality properties. It is mainly used as the lining of boiler, blast furnace hot blast furnace, heating furnace, ceramic kiln and so on.

The low content of cement in Rongsheng high alumina castable effectively reduces the production of low soluble material, thus improving the product’s fire resistance, high temperature strength and slag resistance. When mixing, the mixing water consumption is only about half of that of ordinary castable, so the density of castable is improved and the porosity is reduced. In addition, after molding and curing, the generated cement hydrate is less, and when heating and baking, there is no large amount of water leakage, reducing the strength of the medium temperature.

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Rongsheng high alumina castable at room temperature, with the addition of cement content, its wear will gradually reduce. We produce and sell various types of refractory castable cement, have a number of advanced refractory production lines, we are committed to the production of high efficiency and high quality refractory products. If you want to purchase refractory products, please feel free to contact us. We will provide you with high quality refractory materials and considerate service.

Clay Refractory Castable in Ireland

June 16, 2021May 21, 2020 by rsrefractorycastable

Clay refractory castables are sold all over the world, and we have recently entered into a friendly relationship with a customer in Ireland. Clay castable is widely used in various industrial furnaces. Generally speaking, the outlet temperature of clay refractory castable export is about 1000~1200℃.

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You can’t just look at the price when you buy clay castables. After all, the price determines the quality. When some customers purchase refractory castable, they hear that other manufacturers are cheaper, so they directly place orders in the cheaper one without paying attention to the quality of the product. In the end, there will be a lot of problems in the use of the product.

There is the quality of silicon powder added when making refractory castable, some of the addition of low-grade silicon powder, the strength of castable later will have a certain problem, silicon powder quality is not good castable, after drying, with the hand touch will peel, not to mention the strength and use time. There is no way to guarantee user usage. For the clay refractory castable export, the quality must be stable and reliable so that customers can use it at ease. Procurement of refractory castable, firmly believe RS material, quality assurance, considerate after-sales service.

The bulk density of clay refractory castable export is different from that of clay dense castable. The bulk density of general clay castable is 2.1g/cm3, while the bulk density of dense clay castable is 2.3g/cm3. Because other matrix materials are added in the process of dense clay castable, it is more slag and erosion resistant.

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We are a professional refractory products manufacturer, committed to the production of a variety of high quality refractory materials, the quality is stable and reliable, worthy of customer trust, welcome to consult and purchase.

Corundum Castables in California

June 16, 2021May 20, 2020 by rsrefractorycastable

Corundum castable is actually more commonly known as the aluminum content of more than 85% of the castable. Corundum refractory castables in the refractory castable, is a high-grade castable, because corundum castable high temperature resistance strength, and wear resistance to erosion, gas sealing performance is good, there is a rapid coagulation early strength characteristics.

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At present, it is mainly used in areas with high temperature and severe erosion. However, although corundum castable has high strength, its flexibility is not very good, just like corundum castable used at the mouth of the cement rotary kiln. Many corundum castable manufacturers add mullite to meet the special requirements of the mouth of the kiln.

Corundum refractory castables also has different grades and different additive materials, users can choose different corundum castable according to the location and temperature of use, there are chromium corundum castable, zirconium corundum castable, composite corundum castable.

To be specific, corundum castable is made of high quality refractory aggregate, with appropriate coagulant, dispersant and stainless steel fiber. Main characteristics of corundum refractory castables: high strength, good high temperature performance, volume stability, small thermal conductivity, slag penetration resistance, erosion resistance, construction convenience, furnace structure integrity, etc.

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Zhengzhou Rongsheng Kiln Refractory Co.,Ltd. is professional refractory supplier. We are committed to the production of a variety of high quality refractory castable cement, customers throughout the world, the quality of the product has been customer praise, you are welcome to come to consult and purchase.

Rongsheng Refractory For Sale

June 16, 2021May 19, 2020 by rsrefractorycastable

Refractory for sale is chemical and physical properties of the use of non-metallic (does not exclude a certain proportion of metal) materials and products. According to the American standard, it can be used to make non-metallic materials of structures and devices exposed to temperatures above 1000 ℉ (538 ℃) according to its chemical and physical properties. According to the Japanese standard, the shaped refractories can be used at temperatures above 1500 ° c, and the amorphous refractories, refractory mud and refractory heat insulation bricks can be used at temperatures above 800 ° c.

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According to chemical properties, refractory material can be divided into acid refractories (mainly composed of silicon dioxide), alkaline refractories (mainly composed of magnesium oxide, calcium oxide or both), and neutral refractories (such as corundum and silicon carbide products).

According to the supply form, refractory for sale can be divided into shaped refractories (dense shaped products and thermal insulation shaped products, the former with a total porosity of less than 45% and the latter with a total porosity of more than 45%) and amorphous refractories (a mixture of aggregate fine powder, binders and additives).

Classification by combining form, can be divided into ceramic combination (under a certain temperature, is produced by sintering or liquid form and the combination of generally applicable to the sintering products), chemical combination (under room temperature or higher temperature hardening formed by chemical reactions, usually doesn’t burn are suitable for all kinds of products), hydration combined with (at room temperature, through the fine powder react with water to produce solidification and hardening and the combination of formation, usually applies to castable), organic combination (at room temperature or slightly higher temperature on organic matter form combining produce sclerosis), resin combined (containing refractory material of the resin at low temperature heating, Bond due to resin curing and carbonization) and bitumen/tar combined , etc.

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The classification method of refractory for sale is very many, do not have completely unified standard, usually according to its chemical composition or composition manufacture way and supply way and so on actual situation will decide. Rongsheng refractory maerial, welcome to contact us.

Refractory Cement Export Ireland

June 16, 2021May 18, 2020 by rsrefractorycastable

Refractory cement is also called aluminate cement or high aluminum cement. Aluminate cement is a hydraulic cementing material made by calcination of bauxite and limestone with calcium aluminate as the main component and alumina content of about 50%. Aluminate cement is often yellow or brown, there are also gray. The main minerals for the refractory cement export are monocalcium aluminate (CaO·Al2O3, CA for short) and other aluminates, as well as a small amount of dicalcium silicate (2CaO·SiO2).

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This series refractory cement used for cementing all kinds of refractory aggregate (such as corundum, calcined high bauxite, etc.), to make refractory mortar or concrete, used for lining industrial kiln. Refractory cement forms a low eutectic substance under the action of high temperature. When the refractory castable is configured, too much addition will reduce the high temperature performance of the castable. Silica powder can be used to replace the refractory cement in general production.

Refractory cement refers to cement with a fire resistance not lower than 1580°C. The refractory cement export Ireland is mainly made of bauxite and limestone. The clinker with calcium aluminate as the main component and alumina content of about 50% is calcined and then grinded into hydraulic cementing material. According to the different composition, 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 all kinds of refractory aggregates (such as corundum, calcined high bauxite, etc.), to make refractory mortar or concrete, used in cement rotary kilns and other industrial kilns as lining.

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In order to ensure that there is enough time to complete the mixing, transportation, molding and other processes in the construction of refractory cement export Ireland, the initial setting time of cement should not be too short; After the completion of construction, hope the refractory cement can harden as soon as possible, producing strength, so the final setting time should not be too long.

Corundum Wear Castable Price

June 16, 2021May 16, 2020 by rsrefractorycastable

Corundum wear resistant castable consists of high strength aggregate, powder mineral additives. Corundum wear castable for sale with high strength, shape control, strong overall performance and other advantages. Corundum wear castable is cheap in price, the current quotation is generally below 4000, for the construction site has wear-resisting requirements is the first choice of refractory.

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As to why the price is high or low, I think we all know that if you use more materials in the production, that is, the laying area is larger, the manufacturer will give you a relative discount, just like buying things, the more you buy, the more favorable the price will be.

Corundum wear castable for sale has high refractory temperature, wear resistance and structural strength, is a kind of castable commonly used in high temperature industrial kiln contact solution or wear resistant layer. This series of refractory castable is an amorphous refractory material consisting mainly of ultra-high alumina clinker as aggregate and powder, as well as pure aluminate cement binder and various mixed components.

Another factor affecting the corundum wear castable for sale is the construction process. This series of refractory castables can generally be used in different parts. So for each part of the construction requirements are not the same degree of difficulty. The more complex the construction, the longer the time, the relative charge will increase accordingly.

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RS group produces clay, high alumina, silica, magnesia, lightweight refractories and various shaped and unshaped refractories. We are committed to the production of high quality refractory materials, high production efficiency, stable and reliable quality, careful and thoughtful service, you are welcome to come to consult and purchase.

Acid Proof Castable For Sale

June 16, 2021May 13, 2020 by rsrefractorycastable

Acid proof castable is a new type of anticorrosive material, which is mainly composed of potassium silicate as the adhesive, inorganic molecular material as the curing agent and silicate as the acid-resistant filler. Acid proof castables has high mechanical strength and superior bonding performance, especially in the masonry of granite quick material, acid-resistant ceramic tile, porcelain plate and cement bonding greater than the parent.

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Acid Proof Castables Advantage

1. The acid proof castable has stable performance in various concentrations of organic and inorganic acids, especially in dilute acid, industrial water and neutral aqueous solution, which does not produce crystal salt and has high anti-permeability;

2. Good heat resistance, lining in titanium dioxide rotary kiln, using temperature up to 950℃ — 1000℃;

3. Acid proof castable material adopts non-toxic curing agent, which is non-toxic to operation and construction personnel. It can be used in anti-corrosion engineering of food and medical equipment after identification by medical and health departments.

4. Compared with organic acid-resistant materials, acid-resistant castables are cheap. It except having the same performance of organic acid corrosion resistance, but also has the unique properties of strong oxidizing medium corrosion resistance;

5. Curing at room temperature, simple construction, convenient use, easy transportation, moisture-proof storage.

This series of refractory castable is made of sodium silicate as binder, and acid or alkali acid refractories as aggregate and powder, plus a small amount of coagulant. However, such castable is not resistant to corrosion by alkali, hot phosphoric acid, hydrofluoric acid and high fat. It is widely used in the thermal equipment of petroleum, metallurgy, chemical industry, light industry and other sectors.

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Acid proof castables is mainly used as the lining of anti-corrosion flue and chimney, storage tank, pickling tank, pypyrite tower, acid recovery furnace and other containers corroded by acidic high-temperature gas. If you have any questions about other refractory castables, please feel free to contact us and we will be happy to answer your questions.