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Aug 19, 2023
Inorganic Insulation Boards

An inorganic thermal insulation board is a new type of refractory thermal insulation material processed by a large-scale automatic continuous production line using pure inorganic materials. The use temperature ranges from 900°C to 1300°C, and it can be used as a backing for various industrial kilns, which is a good solution to the heat insulation problem of the kiln. The bulk density can be processed and produced from 0.35 ~ 0.4 ~ 0.45 ~ 0.5. Under the condition of a working temperature of 350℃, the thermal conductivity can be controlled in the range of 0.11 ~ 0.13, and the strength can be controlled in the range of 1 ~ 2Mpa. It can not only be processed into ordinary shapes but the maximum size can be processed into a size of 1 meter * 2 meters.

RS New Inorganic Thermal Insulating Boards
RS New Inorganic Thermal Insulating Boards

Advantages of Inorganic Insulation Panels

It can be used to replace the following insulation material products, such as a 1260-type aluminum silicate fiber backing board, and 1400 type aluminum silicate fiber insulation board. Advantages of inorganic thermal insulation panels in production and use. In the production of inorganic thermal insulation panels, it is more environmentally friendly and efficient. Its performance is not easy to shrink, not easy to pulverize, small thermal conductivity, no attenuation of heat preservation effect, long life, more energy saving, and higher cost performance.

Main Features of Inorganic Thermal Insulating Boards

Low thermal conductivity, more energy-saving. The composition structure of inorganic heat insulation boards from RS kiln Refractory Factory is composed of nano micropores, so the product has good heat insulation performance.

No shrinkage and small gaps after heating. Within the specified operating temperature, the heating permanent line change rate of the New Inorganic Thermal Insulating Boards is less than 0.5%, and it will not shrink after long-term use. For ordinary thermal insulation boards, the heating permanent line change rate reaches 2%-3% shrinkage. The shrinkage is more than 4 times that of the New Inorganic Thermal Insulating Boards.

Completely free of fiber and organic matter, it can be used for a long time under various working conditions. No chalking, no attenuation.

High strength and wide application range. The New Inorganic Thermal Insulating Boards from the RS kiln Refractory Factory have better compressive strength at room temperature. Compared with ordinary thermal insulation boards, its normal temperature compressive strength can reach more than 3 times, and it also has good strength after burning. Long-term use at high temperatures is more secure and has a wider range of use.

The Inorganic Thermal Insulating Boards have no stimulation to the human body and no pollution to the environment. The construction is convenient, healthy, and environmentally friendly.

RS kiln Refractory Factory Inorganic Thermal Insulating Boards have good quality control and a large production capacity. It is not restricted by environmental protection, and the delivery time is guaranteed.

Inorganic Thermal Insulating Boards in RS Kiln Refractory Factory
Inorganic Thermal Insulating Boards in RS Kiln Refractory Factory

Index Parameters of Inorganic Thermal Insulating Boards

Classification Model RS-B0.35 RS-B0.55 RS-B0.6
BD,（g/cm3） ≤0.35 ≤0.55 ≤0.6
CCS,（Mpa） ≥0.8 ≥2.0 ≥2.0
TC,400℃（W/m·K） ≤0.105 ≤0.115 ≤0.12
PLC,% ±0.5%
950℃×12h		 ±0.5%
1050℃×12h		 ±0.5%
1250℃×12h

Dimensional Requirements for Inorganic Thermal Insulation Panels

  1. Regular size: 400 x 600mm, thickness 30-80mm.
  2. Special sizes can be customized according to drawings.

Application of Inorganic Thermal Insulating Boards

Inorganic Thermal Insulating Boards products in RS Kiln Refractory Factory can be applied to the following scenarios: backing insulation lining of heat treatment furnaces in the metallurgical industry, steel rolling heating furnaces, and other kilns. The backing insulation lining of kilns such as roller kilns in the ceramic industry; the backing insulation lining of kilns such as calciners in the cement building materials industry. The backing insulation lining of kilns such as electrolytic cells in the electrolytic aluminum industry; the backing insulation lining of kilns such as cracking furnaces in the chemical industry.

Application of Inorganic Thermal Insulating Boards
Application of Inorganic Thermal Insulating Boards

Ceramic industry roller kiln backing plate

  • Application location: ceramic roller kiln wall heat insulation backing board, bottom backing heat insulation layer.
  • Can be used to replace, 1260 aluminum silicate fiber backing board, and 1400 aluminum silicate fiber insulation board.
  • Application advantages: not easy to shrink, not easy to pulverize, not easy to decay in performance, and more cost-effective.

Regenerators for the glass industry

  • Application location: wall insulation of glass furnace regenerator.
  • Can be used to replace: 1260 aluminum silicate fiberboard, and 1400 zirconium-containing aluminum silicate fiberboard.
  • Application advantages: no shrinkage, performance is not easy to decay, all inorganic.

Inorganic Insulation Board for Sale from Refractory Factory

ZZRS Refractory Factory is a team dedicated to refractory lining solutions for high-temperature industrial furnaces. Our customers are located in more than 100 countries and regions all over the world. RS kiln Refractory Factory refractory brick products and insulation products have significantly longer service life than those refractory products that customers have used before. The performance of our refractory products has also been unanimously recognized by customers. Now, our new insulation material products are dedicated to solving the configuration of refractory materials for the insulation layer of the rotary kiln, such as the new Inorganic Thermal Insulating Boards. Reduce the temperature of the outer wall of the industrial furnace, save production energy, and reduce production costs. Contact us to get the price and samples of inorganic thermal insulation panels for free.

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Aug 1, 2023
New Micro-nano Insulating Bricks

The New Micro-nano Insulating Bricks products can solve the need for thermal insulation of the wall and bottom of various large furnaces, and the working temperature can be from 600℃ to 1400℃. With a wide range of applications, good thermal insulation performance, and high strength, the product can meet the requirements of energy saving and environmental protection for various industrial furnaces.

Newly High-Temperature Micro-nano Insulation Bricks
Newly High-Temperature New Micro-nano Insulating Bricks

Main Performance Advantages and Features of New Micro-nano Insulating Bricks

  • (a) Low thermal conductivity: With low thermal conductivity, it has a good heat insulation effect and can make the furnace wall thickness thinner under the same temperature condition, thus saving more cost.
  • (b) Low heat capacity: Due to its ultra-light bulk density and low thermal conductivity, the insulating brick accumulates less heat inside, making it more energy efficient.
  • (c) Good stability: With very low iron oxide and alkali metal content, its stability is better within the specified service temperature.
  • (d) High strength: Its strength at normal and high temperatures is higher than other products with the same bulk density at the same temperature.
  • (e) Low size tolerance: The size tolerance is within 0.05mm, and the dimensions can be customized according to customer requirements.

Indicators New High-Temperature Micro-nano Insulation Bricks can achieve

Items Index
Model RS-WNM0.25 RS-WNM0.35 RS-WNM0.4 RS-WNM0.45 RS-WNM0.5
BD,g/cm3 0.25 0.35 0.4 0.45 0.5
CCS, MPa ≥0.5 ≥0.6 ≥0.8 ≥1.0 ≥2.2
TC,W/(m.K) ≤0.1 ≤0.105 ≤0.110 ≤0.115 ≤0.119
PLC,% ±0.5 ±0.5 ±0.5 ±0.5 ±0.5
600℃*12h 900℃*12h 1000℃*12h 1050℃*12h 1050℃*12h
Fe2O3,% ≤0.5 ≤0.5 ≤0.5 ≤0.5 ≤0.5

High-Temperature Micro-nano Insulating Bricks Typical Applications

High-Temperature Micro-nano Insulation Bricks can be used as a thermal insulation backing layer of refractory materials, and the application includes all kinds of industrial furnaces, hot blast furnaces, heating furnaces, smelting furnaces, flue pipes, hot air ducts, and other heating and heat-generating parts.

For Roller kilns, Tunnel kilns

insulating bricks for tunnel kilns

  1. Application positions: Furnace walls and bottom insulation layer of the ceramic roller kiln.
  2. Substitute for the following: Lightweight clay brick, high alumina insulating brick, and mullite insulating bricks.
  3. Advantages: not easy to shrink, not easy to pulverize, performance not easy to decay, and more cost-effective.

For Large Hot Air Ducts

insulating bricks for large hot air ducts

  1. Application positions: Insulation layer of a large hot air duct.
  2. Substitute for the following: Lightweight clay bricks, high alumina poly-light bricks.
  3. Advantages: lower outside wall temperature, more energy efficiency, lighter weight of thermal equipment, and more cost-effectiveness.

High-Temperature Micro-nano Insulation Bricks Wide Applications and Advantages

Our technical department announced some of its performance indicators: the bulk density can be ≤ 0.4 g/cm3 and thermal conductivity can be ≤ 0.11. It can work in the temperature range of 600-1400°C. Due to these advantages, the insulating bricks’ application advantages are as follows:

  • Insulation layer of roller kiln, tunnel kiln walls, and bottoms. It is not easy to shrink, not easy to pulverize, and its performance is not easy to decay.
  • Insulation layer for large hot air ducts. The outer wall temperature is lower and more energy-saving. Thermal equipment is lighter in weight and more cost-effective.
Micro-nano Insulation Bricks Typical Applications
Micro-nano Insulation Bricks Typical Applications

 1. Reduce the outer wall temperature of high-temperature industrial kiln

The actual measured data when the wall thickness of two different materials is 300mm, the data are compared as follows:

  1. With Rongsheng lightweight thermal insulation bricks, the temperature of the outer wall is 70°C (low);
  2. With ordinary lightweight heat-insulating bricks, the outside wall temperature is 83°C (high).
  3. The difference of outside wall temperature: 13°C↓.

Conclusion: Rongsheng lightweight thermal insulation bricks reduce the outer wall temperature by 18.57%↓.

2. Reduce the weight of the furnace body of the high-temperature industrial kiln

The actual measured data, when the temperature of the outside wall reaches 80°C, the data are compared as follows:

  1.  Using Rongsheng light-weight thermal insulation bricks, only 210mm thick (thin) is needed;
  2.  Using ordinary lightweight thermal insulation bricks, 330mm thick (thick) is needed.
  3.  The difference of wall thickness: 120mm↓.

Conclusion: Rongsheng light-weight thermal insulation bricks reduce the thickness of the furnace wall by 57.14%↓.

Rongsheng Refractory Insulating Bricks Manufacturer

Rongsheng refractory manufacturers have been working hard to provide better refractory products for customers. Finally, we achieved a breakthrough in refractory insulation materials. Its high performance-price ratio will make it widely used in the insulation layer of more and more high-temperature industrial furnaces. Effectively reduce the temperature of the outer wall of the kiln, saving production energy and costs. Let Rongsheng help you better with the high-temp insulating bricks. For more info, please leave a message or contact us directly. WhatsApp: +86 18538312977, Email: inquiry@refractoriesmaterials.com.

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Aug 1, 2023
High-Temperature High-Strength Lightweight Micro-nano Aggregate

Performance advantages of High-Temperature High-Strength Lightweight Micro-nano Aggregate. Semi-lightweight high-strength castables refractory can be produced while taking into account the ultra-high strength of heavy castables and the low thermal conductivity of lightweight castables refractory. It can be applied in ladle permanent lining, ladle cover, tundish permanent lining, tundish cover, rolling heating furnace working lining, etc.

High-Temperature High-Strength Micro-nano Lightweight Aggregate
High-Temperature High-Strength Micro-nano Lightweight Aggregate

The emergence of High-Temperature High-Strength Lightweight Micro-nano Aggregate will become a new choice for the working layer of many furnace types. At the same time, this raw material can also be used as a bulk density regulator for refractory precast shapes parts, and refractory castables.

Refractory Products with excellent performance can be produced by using this High-Temperature High-Strength Lightweight Micro-nano Aggregate raw material, and are widely used in the insulation layer of high-temperature industrial kilns. Effectively reduce the outer wall temperature of high-temperature industrial furnaces and save production costs.

This High-Temperature High-Strength Lightweight Micro-nano Aggregate can be used to make the following products with excellent performance:

Item Type A Type B
BD, g/cm³ ≤1.7 ≤1.7
CCS, MPa ≥50 ≥50
TC, W/( m.K) Hot Side 800℃ 0.400 0.650
Working Temperature, ℃ ≥1450 ≥1350

Rongsheng Refractory Manufacturer

In the design and construction of insulation layer refractory materials for industrial kilns, good design, and construction can not only save the number of refractory products used, but also reduce the outer wall temperature of the kiln. This can not only save production energy but also better ensure production safety. Rongsheng Refractories factory has been committed to the safe and efficient production of high-temperature industrial kilns.

Rongsheng Refractory Materials Manufacturer can provide suggestions for reliable refractory lining materials. We can also discuss with you the design and configuration of better insulation layer refractories according to the production conditions of high-temperature industrial furnaces. Rongsheng Refractory Manufacturers aim to provide better insulation materials to serve high-temperature industrial kilns. Contact us for more information for free.

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Apr 24, 2022
Ceramic Roller

In order lo achieve the ideal use effect and extend the service life of ceramic roller. Please refer to the following instructions:
(1) The new ceramic roller before use, should be placed dry kiln top (60-8o ℃) more than 24 hours.
(2) After coating, the roller should be placed on the top of the kin for more than 72hous to dry;
(3) When replacing the roller, the roller should be quickly, quickly and rotated
(4) The thermal zone of roller, to avoid the low resistance to cold, should be placed in a veneer cushion on the scaffold, and keep the rotating state below 600 ℃；
(5) The surface of the roller is coated with small glaze particles, which will affect the thermal shock performance of the roller. It should be cleaned regularly
(6) Unqualified raw materials and fuels will corrode roller rods and be used carefully.ceramic roller 1 ceramic roller 2 ceramic roller 3

Main Technical Specifications of Ceramic Roller

Item RS-N98 RS-G98 RS-S95 RS-H80
Bulk Density g/cm3 2.7-2.8 2.8-3.0 2.5-2.7 2.3-2.5
Bibulous Rate % 5-8 3-6 9-10 9-11
Modulus of Rupture Mpa 50-55 70-80 40-50 45-55
High Temperature Modulus of Rupture Mpa ≥50 ≥55 ≥45 ≥40
Maximum use temperature ℃ 1350 1400 1250 ≤1100
Thermal Shock Resistance Good Good Good Good
Raw Material Composition(Zr Al2O3) % 76-81 78-85 SIC 55% 75-80%
Specifications Diameter φ16-200mm Length 1000-5500mm
Straightness Length X≤0.07%

Main Technical Specifications of Ceramic Roller:

The physical and chemical data in the table are obtained from laboratory test samples for reference only when different specifications of products are actually used.

The maximum operating temperature of the ceramic rollers is determined by the size of the rollers,the distance between the supporting points,the distance between the center of the roller,the load and the load width in the kiln.

The highest temperature in the table is the recommended data under laboratory condition,actual temperature than the highest temperature for a long time to use low temperature 30 to 50 ℃。

Special shaped roller can be customized according to customer requirements.ceramic roller 4 ceramic roller 5 ceramic roller 6

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Apr 24, 2022
Silicon Carbide Crucible

Silicon carbide sagger produced by Rongsheng Group have the characteristics of good flexibility, not easy to crack, and long service life, and also the large capacity of the sagger increases the output, guarantees the quality, saves labor and lots of costs.
The company has successively supplied customers in more than 60 countries. Through our company’s continuous improvement of products and strict control of the production process, the stability of product quality has been improved, so that customers can get real benefits and have won unanimous praise from users.silicon carbide saggers 1 silicon carbide saggers 2 silicon carbide saggers 3

Technical Data:

No. Particulars Parameter
1 SiC（%） ≥85%
2 SiO₂（%） ≤10%
3 Fe₂O₃（%） <1%
4 Bulk Density in g/cm³ ≥2.60
5 Cold Crushing Strength（MPa） ≥100
6 Apparent Porosity（%） ≤18
7 Refractoriness，(°C) ≥1700

Silicon Carbide Pipe:

The product is made of silicon carbide as the main raw material, adding a variety of chemical wear-resistant raw materials and anti-oxidant, effectively improving the wear resistance of the product, using SiO2 micro powder as the high-temperature bonding phase, a high-performance silicon carbide products by high-temperature firing, with the following characteristics:
1.Dimensional stability at high temperatures, resistance to deformation and high strength at high temperatures
2. Resistance to thermal shock, abrasion and corrosion
3.Anti-oxidation and erosion resistance
It can be widely used in: electric power, steel plant slag flushing trench, coal chemical industry, mining, transportation pipeline.

Technical Data:

Technical Performance Bulk Density Abrasion Resistance Moh’s Hardness CCS
g/cm³ % MPa Mpa
Silicon Carbide Tubes 2.7 1.66 >9.0 21.2

Silicon Carbide Bricks/Silicon Carbide Plates/Silicon Carbide Pillars/Silicon Carbide Special-shaped Parts:

Silicon carbide bricks, sheds, brackets and silicon carbide special-shaped parts produced with silicon carbide as the main raw material not only have the inherent characteristics of silicon carbide such as high strength and high hardness, but also have high refractoriness under load, fast heat conduction, anti-oxidation, It is not easy to shrink and deform under high temperature, and has the characteristics of long service life.
No matter what kind of combustion energy (gas, coal, oil, electricity) is used, this product has excellent characteristics such as non-bending deformation, non-expansion and slag falling, and strong heat radiation at high temperatures, and is widely praised by our customers. We uses advanced hydraulic vibration molding equipment, which can be molded in one time, with unique formula and advanced technology, which is well received by users.

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Apr 24, 2022
Foam Ceramic Filter

Product Characteristics:

1. Silicon carbide foam ceramic filter using German imported polyurethane foam sponge as a carrier, silicon carbide mainly squeezed into the foam sponge, and then squeeze out the slurry,
the slurry around the foam fiber, after drying, baking at high temperature, polyurethane thermal
decomposition, leaving foam ceramic products, namely silicon carbide foam ceramic filter.
The silicon carbide foam ceramic filter, with the three- dimensional mesh interconnection structure of foam sponge, can make metal liquid reflect rectification, mechanical screening, filtration cake, adsorption and other filtration mechanisms to effectively improve the purity of metal liquid, reduce waste rate, reduce mechanical processing loss, thus improve production efficiency and reduce production cost.foam ceramic filter 1

Composition of product Silicon Carbide,AL2O3,SiO ect
Color Grey,Dark Grey
Using Temperature ≤1550℃
Number of hole density PP(holes per square inch) 10,15,20,30
Porosity 85%-90%
CMOR Mpa ≥1.5Mpa(Industry Standard 1.0Mpa)
Bulk Density 0.4g/cm3~0.5g/cm3
Square specification(mm) Max filtering capacity(kg) Normal metal fluid flow velocity(kg/s) Round Specification(mm) Max filtering capacity(kg) Normal metal fluid flow velocity(kg/s)
Ductile cast iron Ash cast iron/copper-aluminum castings Ductile cast iron Ash cast iron/copper-aluminum castings Ductile cast iron Ash cast iron/copper-aluminum castings Ductile cast iron Ash cast iron/copper-aluminum castings
40*40*22 32 64 3 4 Φ40*22 25 50 2 3.5
50*50*22 50 100 4 6 Φ50*22 35 70 3 4.5
60*60*22 72 144 5 8 Φ60*22 50 100 4.2 6.5
75*50*22 75 150 6 9 Φ70*22 75 150 5.5 8.8
100*50*22 100 200 8 12 Φ80*22 100 200 7.2 11
75*75*22 110 220 9 14 Φ90*22 120 240 9 14
80*80*22 150 300 12 18 Φ100*22 140 280 11 17
100*100*22 200 400 16 24 Φ110*22 190 380 13 20
150*100*22 300 600 24 36 Φ120*22 230 460 16 25
150*150*22 450 900 36 54 Φ150*22 350 700 25 30

2.Alumina Foam Ceramic Filter
Alumina ceramic foam filter is a new type of low density, high porosity and with three dimensional network skeleton structure of the filter. And widely used in aluminum process industry for molten aluminum filtering, so as to improve aluminum quality.
Alumina ceramic foam filter can effectively removes non-metal solid mixture from aluminium and aluminium alloy fusant, reduce trapped gas and provide laminar flow and then the filtered metal is significantly cleaner. Cleaner metal results in higher-quality castings, less scrap, and fewer inclusion defects, to improve the quality of aluminum alloy and other non-ferrous alloy casting, all of which contribute to reduce casting cost, its maximum service temperature 1200° C.
Alumina ceramic foam filter has the advantages of high porosity, high mechanical strength, stable chemical property, strong corrosion-resistant, high adsorption rate, excellent filtering functions and thermal shock resistance. It is mainly used for purification process of aluminum, aluminum alloy, and other nonferrous alloy production, can also be used as gas-solid, liquid-solid separation medium, catalyst carrier, burner and sound-absorbing and environmental protection fields.
Alumina ceramic foam filter is equipped with a gasket on the edges; the gasket assures the proper and tight position of the filter within the filter box. There are different types of gasket available, e.g. ceramic fiber gasket etc., also can provide alumina ceramic foam filter without gasket. These types of filters have been favored by customers from Europe and the United States for years.foam ceramic filter 2

Application of Alumina ceramic foam filter:

Alumina ceramic foam filter is mainly applied to the aluminum and aluminum alloys fusant filter equipment of continuous casting, half-continuous casting, gravity casting, and low pressure casting, also applied to other non-ferrous metal precision casting, gas-solid and liquid-solid separation medium, high temperature gas filter, chemical filling, sound absorbing material and catalysis carrier etc.

Porosity(%) 80-90%
Working Temperature ≤1100℃
Bending Strength (Mpa) 0.6
Compression Strength (Mpa) 0.8
Thermal Shock Resistance 1100℃—room temperature 6 times
Bulk Density 0.35-0.45 g/cm3

3.Zirconia Foam Ceramic Filter:

Product Performance:

1.Adjust the metal flow rate through rectification to reduce secondary inclusion and pores.
2.Reduce casting inclusion and reduce casting waste and welding repair rate.
3.Improve the surface quality and mechanical properties of the castings.foam ceramic filter 3

Application of Zirconia Foam Ceramic Filter:

Filtration of stainless steel, carbon steel and large castings.

L * W * T / Diameter *thick (mm) Filter capacity (kg) The pouring flow (kg/s) direct channel is 300mm high
High degree of deoxygenation Low degree of deoxygenation Carbon-based steel castings Stainless steel casting pieces
50Dx20 30 90 2.0 3.0
70Dx25 60 175 3.8 5.7
90Dx25 95 285 6.4 9.5
125Dx30 185 550 12.2 18.4
150Dx30 265 795 17.7 26.5
50x50x20 35 110 2.5 3.7
50x75x25 55 170 3.7 5.6
75x75x25 85 255 5.6 8.4
100x100x25 150 450 10.0 15.0
125x125x30 235 700 15.6 23.4
150x150x30 340 1010 22.5 33.7
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