Lightweight Insulating Castable Refractory

The Lightweight Castable Refractory is a castable unshaped refractory material prepared by adding water or a solution containing a binder during construction by using light refractory aggregate, refractory powder, binder and admixture. It is generally used as a thermal insulation lining for thermal equipment to reduce energy consumption by heat preservation. Therefore, it is also called Lightweight Insulating Castable Refractory.

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Lightweight Insulating Castable Refractories Features

Lightweight Insulating Castable Refractories have good thermal insulation properties due to their small bulk density and low thermal conductivity. At the same time, lightweight insulation refractory castables have other unique features for thermal insulation lining of various thermal equipment, and some lightweight castables can also be used directly for work lining.

• Feature 1: Light weight, high compressive strength, acid and acid gas corrosion.
• Feature 2: heat insulation, heat preservation, low water absorption
• Feature 3: Simple construction, it is the most ideal product for the construction of alkali corrosion resistant parts under high temperature.
• Feature 4: Good workability, strong adhesion, long initial setting time and long operation time, strong strength growth, strong impermeability, no need for acid treatment, easy to ensure the dense and fullness of masonry gray joints, can significantly improve The airtightness and integrity of the lining wall of the chimney and the corrosion resistance of the lining are ideal cementing materials for high chimneys, high temperature flue and duct lining, and can also be used for acid resistant pools in petroleum, chemical, nonferrous metallurgy and other industries. Acid resistant engineering such as tanks.

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Lightweight Insulating Castable Refractory can be classified according to the use temperature:

• Low temperature lightweight refractory castable with a temperature of 600-900°C;
• Medium temperature lightweight refractory castable with a temperature of 900-1200°C;
• High temperature lightweight refractory castable, use temperature greater than 1200°C.

This kind of lightweight insulation castable has the properties of lightweight, good performance of insulation, and low thermal conductivity.

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Rongsheng Lightweight Insulating Castable Refractory Manufacturer

The refractory castable production line of Rongsheng Refractory Manufacturer has been fully put into operation. The daily production capacity is 150 tons. In addition to the visible production strength, Rongsheng’s technical strength cannot be underestimated. Rongsheng’s technical team will consolidate the customized castable refractory lining according to the working conditions of the customer’s thermal equipment to improve the use of refractory materials, extend the life of the lining of the kiln, and greatly save costs and energy consumption.

If you are in need of refractory castables, such as Lightweight Insulating Castable Refractory, please contact us and we will provide you with more choices, lower prices, and faster delivery!

Castable Refractory Cement Manufacturer

The raw materials of high-quality bauxite and high-quality lime are mixed in a certain proportion; after sintered, the clinker with aluminate as the main component is obtained; the clinker is further ground into fine powder; Finally, a fire-resistant hydraulic cementitious material called Castable Refractory Cement is produced. Refractory Cement has a refractoriness of not less than 1580°C. According to the composition, it can be divided into alumina refractory cement, low calcium aluminate refractory cement, calcium magnesium aluminate cement and dolomite refractory cement.

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Use of Refractory Cement

Refractory cement is also be called furnace cement. Refractory cement can be used to bond various refractory aggregates (such as corundum, calcined high alumina bauxite, etc.) into refractory mortar or concrete for lining of cement rotary kiln and other industrial furnaces.

Precautions after Construction of Refractory Cements Lining

After the refractory cement lining is completed, an boiler-drying is required to evaporate excess water. Avoid the explosion of the boiler when start-up operation, and extend the service life of the refractory lining.

When the refractory cement lining is on baking, it should be slowly heated to avoid excessive temperature rise to prevent local bursting. When it comes to cooling of the refractory cement lining, it should also be slow, and avoid forced ventilation.

Castable Refractory Cement Manufacturer

Rongsheng Castable Refracory Cement Manufacturer has experienced more than 10 years in the refractory industry and currently has a refractory brick production plant and a castable production plant, and a separate office. RS unshaped refractory production line has been put into production, fully automatic, efficient production process, to provide you with high quality refractory cement and other castable products. To get Castable Refractory Cement Price, please contact our sales manager, Make a free quote.

The Application of Corundum Castable

Corundum castable is made from corundum aggregate, fines, binders and additives. Corundum castable has the advantages of high mechanical strength, excellent abrasion resistance, high refractoriness, good slag corrosion resistance, low creep rate and so on. Al2O3 content in corundum castable is above 90%. Raw materials used for corundum castable production are: tabular corundum, white corundum, brown corundum and so on. Composite corundum castable such as chrome corundum castable, application of corundum castable, zirconia corundum castable are widely used in different industrial furnaces areas.

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Corundum castable used in heating furnace tapping spout are composed of fused corundum( brown corundum or sub-white corundum) aggregate, fused corundum powder, a-Al2O3 micro powder, SiO2 micro powder, Cr2O3 micro powder( or zircon micro powder) and high purity calcium aluminate cement.

Application of Corundum Castable

Corundum refractory castable  is widely used in steel ladle working lining, sliding nozzle valve, tapping nozzle, electric arc furnace cover triangle zone and so on. Besides, corundum castable are also used in places where need good abrasion resistance, for example, rotary kiln, coal injection tube, circulating fluidized bed boiler, RH furnace immersion tube outer lining, petrochemical industry high temperature catalytic cracking reactor working lining, etc.

Sometimes, black silicon carbide is added into corundum castable raw materials, so the wearing resistance is greatly improved, it is very suitable for CFB boilers.

Corundum Castable Physiochemical Index

Corundum Castable Manufacturer Supplier

RS Group Kiln Refractory Bricks is the manufacturer & supplier of corundum castable. Our corundum castable is with high quality and competitive price. Contact RS Group for more details.

RS Group GIFA 2019 Exhibition Time

After intense preparations, RS Group’s exhibition staff arrived at GIFA 2019. We are ready to show the world the advantages of RS refractory products and our production technology. The following is the RS Group GIFA 2019 Exhibition Time.

RS Group exhibition site uses the Chinese red witch is the characteristics of Chinese. Our refractory bricks models and RS products brochures are on display. Welcome the you from all over the world to get a glance of RS refractory products.

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At our exhibition, Rongsheng Group will welcome visitors with the fullest enthusiasm. Our products, such as firebricks, unshaped refractories, graphite electrodes, insulating refractories and so on are with competitive. Our service, contains the customization, refractory products cn be designed for the special working conditions. Our technology, with refractory projects design, construction and maintenance, etc.

In 25th, yestory, at RS Group booths, there have been many visitors. Under the guidance of our booth staff, the visitors learned more about RS Group’s refractory products and then took photos with them. We look forward to the more visitors in the next following days!

If you are attending or want to attend GIFA 2019 in Exhibition center in Dusseldorf, Germany. Don’t miss us, RS Group, Booth No.: Hall 4 – C39. Date: June25 ~ 29, 2019.

Noranda Furnace Refractory

Noranda furnace is formerly called Noranda reactor, it is horizontal cylindrical bath smelting furnace. Copper concentrate ore, copper containing material, flux and fuel are proportionally mixed and loaded into furnace by thrower. Oxygen rich air are blasted into furnace from tuyere, which makes the molten bath in a stirring state, raw material can have desulfurization reaction and slag making reaction, and produce matte with about 70% copper content.

Noranda furnace has strong adaptation to raw material, large capacity and high efficiency, flue gas SO2 concentration is high and can meet the requirement of sulfate acid making. It is also self heating smelting furnace, with low energy consumption. Noranda furnace copper smelting belongs to oxygen-rich bath smelting. It can realize drying, sintering, smelting and blowing smelting slag making at the same time, with high smelting intensity, intense bath agitating. To ensure the smooth going of smelting process and the service life of furnace, furnace lining refractory should have very high performance.

The most vulnerable parts of Noranda furnace are tuyere, furnace mouth, material loading-end combustor and furnace cylinder top corresponded to slag discharging end combustor, sediment zone slag line upper and lower part wall and slag-end wall. 

At tuyere zone, large amount of oxygen enriched air enters into furnace, accompanied with fierce agitating and spraying, chemical reaction is intense, corrosion is severe, meanwhile, furnace temperature will fluctuate frequently and cause thermal shock, mechanical abrasion is also happened when poking tuyere. So the working atmosphere is very harsh, damage speed is quick. It directly determined the service life of Noranda furnace. Furnace mouth would suffer high temperature smoke current scouring, mechanical impaction during cleaning slag, is also easy to be damaged.
Sediment zone slag line upper and lower cylindrical wall and slag-end wall are exposed in high temperature, and as slag layer will frequently change position during slag discharging and copper discharging, this part will suffer severe erosion and high temperature current scouring, is also vulnerable.

Material loading end wall and loading mouth. As material is water containing, cold air will also enter furnace from loading mouth, the furnace lining of material loading mouth will deform and form bump.

Feeding end combustor and slag discharging end combustor surrounding furnace top lining mainly suffer the direct scouring of flame, local thermal load is overlarge and with the coaction of large amount cold air, thermal shock is very severe.

According to the production condition of Noranda furnace, refractory materials used in it should have high purity, good slag corrosion resistance, high mechanical strength, good scouring resistance, abrasion resistance, good thermal stability. Earlier, furnace lining where suffers severe damage is mainly built by fused cast magnesia chrome bricks, other parts are built by direct bonded magnesia chrome bricks. The quantity of fused cast magnesia chrome bricks accounts for 30%~40% of the total firebricks consumption. With the improvement of furnace design, the damage degree of the damage tending parts is greatly reduced, along with the enhancement of firebrick quality, now fused grain rebonded magnesia chrome bricks have replaced fused cast magnesia chrome bricks. Although fused cast bricks have good abrasion resistance, erosion resistance and mechanical scouring resistance, their thermal shock resistance is poor and it is also expensive. The rest parts still use direct bonded magnesia chrome bricks.