Refractory Bricks, Monolithic Refractory, Insulation Refractory, etc.

1212

Call Now

232

Category Archives: Products

  1. Home / 
  2. Archive by category "Products"
    3. ( Page2 )
Apr 24, 2022
Zirconium Silicate

Zirconium silicate has a high refractive index of 1.93-2.01 and stable chemical performance. It is a high quality and low price opacifier for opacification. It is widely used in the production of various building ceramics, sanitary ceramics, daily ceramics and first-class handicraft ceramics. Zirconium silicate has been widely used in ceramic production because of its good chemical stability, so it is not affected by the burning atmosphere of ceramic, and can improve the binding performance of ceramic glaze significantly and improve the hardness of ceramic glaze. Zirconium silicate has been further applied in the production of color picture tube, emulsified glass and enamel glaze in the glass industry.zirconium silicate 1 zirconium silicate 2 zirconium silicate 3

Physical properties:

Specific Gravity 4.69
Melting Point 2500°C
Refractive Index 1.97
Mohs Hardness 7.5
Thermal Expansion Coefficient 4.2*10-6
Apprearance White or off white powder

Chemical properties:

Item RS65 RS64.5 RS63.5
ZrO2+HfO2 65.0 min 64.5 min 63.5 min
Fe2O3 0. 06 max 0. 08 max 0. 12 max
Ti02 0.10 max 0.12 max 0.18 max

Product standard:

Type Average mesh Application
RS-1.0 D50≤1.0um High-grade sanitary porcelain

High-grade daily-use porcelain

High-grade crystal brick
RS-1.2 D50≤1.2um
RS-15 D50≤1.5um Middle and low class sanitation porcelain,external and internal brick, archaized brick, engobe, body, etc.
RS-2.0 D50≤2.0um

Application:

1）Building ceramics, sanitary ceramics, daily-use ceramics, special ceramics, etc.（High refractive index 1.93-2.01，Chemical stability，It is an excellent and inexpensive opacifying agent,It is an excellent and inexpensive opacifying agent,In the processing and production of ceramic glaze, the scope of use is wide and the amount of use is large.）
2）Refractory materials and products, glass kiln zirconium ramming material, castable, spray coating, etc. (zirconium silicate melting point is very high:2500℃)
3）TV industry color kinescope, glass industry emulsified glass, enamel glaze production
4）Plastics industry: used as fillers requiring stability, heat resistance and chemical erosion resistance

More Details
Apr 24, 2022
Honeycomb Ceramic Regenerator (For Regenerative Heating Furnace)

The technology is to make two regenerative alternating heat absorption exotherms through the reversing device, to recover the heat of the flue gas to the maximum limit, and then to heat the combustion air and gas in the furnace to above 1000 C, it can achieve stable ignition and efficient combustion even the low calorific value of the inferior combustion, saving fuel up to 40-70 °C. The output will be increased by more than 15 °C, the oxidation loss of the steel embryo will be reduced by more than 40%, the NO2 emission will be less than 100 pm, and the exhaust gas temperature will be lower than 150″C, which greatly reduces the greenhouse effect of the earth’ s atmosphere. If most of industrial furnaces in the country adopt HTAC technology, its economic and social benefits are immeasurable, which will greatly alleviate the shortage of energy and improve the living environment of human beings. Since its launch in the market, it has achieved good results and is favored by the steel smelting industry.

Main Size of Honeycomb Ceramic Regenerator:

L*W*G(mm) Number of cell Cell Width(mm) Thickness of Inner Wall(mm) Thickness of Out Wall(mm) Surface Area(m2/m3) Opening Ratio % End Face Shape
200x100x100 20×9 Round∮8.5 2.3 2.5 280 51 Flat、Bevel、Single Groove、Double Groove
150x 100×100 36×24 Square3x3 1.0 1.2 731 52
150x 100×100 35×20 Hexagonal∮4 1.0 1.2 687 65
150x 100×100 10×6 Hexagonal∮12 4.0 4.0 210 50
150x 150×100 35×20 Hexagonal∮3.5 0.8 1.5 686 63
150x 100×100 35×19 Round∮4 1.0 1.3 568 53
150x 100×100 15×9 Round∮8.5 2.3 2.5 280 51
150x 100×100 42×28 Square2.6×2.6 1.0 1.1 815 53
150x 100×100 7×6 Hexagonal∮12 4.0 4.0 224 52
100x 100×100 31×31 Square2.65×2.65 0.7 1.0 1065 67
100x 100×100 24×24 Square3x3 1.0 1.2 731 52
100x 100×100 23×20 Hexagonal∮4 1.0 1.2 608 64
100x 100×100 10×9 Round∮8.5 2.3 2.5 280 51

Physical Properties:

Item Corundum-mullite Mullite Cordierite-mullite Cordierite Chrome Corundum-mullite Zirconium Corundum-mullite
Bulk density (g/cm3) ≥0.8 0.6~1.1 0.6~0.9 0.5~0.8 ≥0. 8 ≥0. 8
Thermal Expansion Coefficient

(X10-60°C-1) (RT-800°C)

 ≤6 ≤5.5 ≤3 ≤2.5 ≤6.5 ≤6
Specific heat capacity

(J.(Kg.k)-1 )

 ≥800 ≥800 ≥750 ≥750 ≥800 ≥800
Thermal Shock (°C) ≥300 ≥300 ≥400 ≥500 ≥300 ≥350
Softening

temperature under load

(°C) (0.1MPa )

 ≥1500 ≥1450 ≥1350 ≥1250 ≥1500 ≥1500
Compressive Strength

(MPa) (C axis)

 ≥20 ≥20 ≥20 ≥20 ≥20 ≥20
Compressive Strength(Mpa) (A、 B axis) ≥4 ≥4 ≥3 ≥3 ≥4 ≥4

Chemical Composition:

Item Corundum-mullite Mullite Cordierite-mullite Cordierite Chrome Corundum-mullite Zirconium Corundum-mullite
SiO2 20~30 25~35 40~50 28~38 20~25 28~38
Al2O3 65~75 55~65 40~50 45~55 65~75 45~55
MgO ≤0.5 ≤1 5~9 11~14 ≤0.5 11~14
Fe203+TiO2 1~4 1~4 1~3 1~3 1~3 1~3
Others ≤5 ≤5 ≤5 ≤5 ≤8 ≤5
More Details
Apr 24, 2022
RTO/RCO Honeycomb Ceramics (For VOCS Waste Gas Treatment Incinerators)

RTO refers to the regenerative thermal oxidation technology, and the English name is “Regenerative Thermal Oxidizer”. RTO regenerative thermal oxidation recovers heat by adopting a new unsteady heat transfer method. The principle is to heat the organic waste gas above 760℃to oxidize and decompose VOC in the exhaust gas into CO2 and H2O. The high-temperature gas generated by the oxidation flows through the special ceramic regenerator, and the ceramic body is heated and “heat-storing”, and the heat storage is used for preheating the organic exhaust gas that is subsequently introduced, thereby saving the fuel consumption of the exhaust gas heating. RTO technology is suitable for the treatment of low and medium concentration ( 100-3500mg/m2 ) waste gas with a decomposition efficiency of 95%-99%.
RCO refers to the regenerative catalytic combustion method, and the English is “Regenerative Catalytic Oxidation Oxidition”. The principle of RCO regenerative catalytic combustion is as follows: the first step is the adsorption of VOC molecules by the catalyst, and the concentration of the reactants is increased. The second step is to reduce the activation energy of the reaction and increase the reaction rate. By means of the catalyst, the organic waste gas can be anaerobicly burned at a lower light-off temperature, and decomposed into CO2 and H2O to release a large amount of heat. Compared with direct combustion, it has the characteristics of low light-off temperature and low energy consumption. In the case where the light-off temperature is reached, no external heating is required, and the reaction temperature is 250-400℃.rto honeycomb ceramics 2 rto honeycomb ceramics 1

Main Size:

L*W*G(mm)  

 

150x 150 x 300(150)

 

 
Number of Cell 25×25=625 40×40= 1600 43×43=1849 50×50=2500 60×60=3600
Width of Cell(mm) 4.95 3.02 2.81 2.38 1.98
Thickness of inner wall(mm) 1.0 0.7 0.65 0.6 0.5
Surface Area(m2/m3) 577 886 950 1084 1294
Opening Ratio(%) 68 65 65 63 63

Physical Properties:

Item Aluminum Porceian-cordierite Dense aluminum porcelain Cordierite Mullite-Cordierite Mullite Enamel
Density(g/cm3) 2.0~2.3 2.4~2.6 1.6~1.9 1.7~2.0 2.0~2.4 1.7~2.0
Bulk density (g/cm3) 0.65~0.8 0.65~0.8 0.6~0.7 0.65~0.75 0.65~0.8 0.65~0.75
Thermal Expansion Coefficient

(X10-6°C-1) (RT-800°C)

 ≤6 ≤6 ≤3 ≤3.5 ≤5.5 ≤6.5
Specific heat capacity

(J/Kg.k)

 950~1150 1000~1200 900~1100 900~1100 1000~1150 900~1100
Thermal Conductivity (w/m.k)(20-1000°C) 1.5~2.0 1.5~2.0 1.2~1.8 1.4~1.9 1.5~2.0 1.4~1.9
Thermal shock resistance Max Temperature(℃） ≥400 ≥300 ≥450 ≥350 ≥350 ≥300
Advised Max Temperature(℃） 1250 1350 1150 1250 1450 1200
Water Absorption Rate(%) ≤20 ≤5 ≤22 ≤20 ≤20 ≤10

Chemical composition:

Item Aluminum Porceian-cordierite Dense aluminum porcelain Cordierite Mullite-Cordierite Mullite Enamel
SiO2 25~35 25~35 45~55 40~50 25~35 68~72
Al2O3 55~65 55~65 28~38 55~65 55~65 22~26
MgO 2~4 2~4 11~14 5~9 ≤2 ≤0.5
Fe203+TiO2 1~4 1~4 1~3 1~3 1~4 1~3
Others ≤5 ≤5 ≤5 ≤5 ≤5 ≤5
L*W*G(mm) 150x 150 x 300(150)
Number of Cell 25×25=625 40×40= 1600 43×43=1849 50×50=2500 60×60=3600
Width of Cell(mm) 4.95 3.02 2.81 2.38 1.98
Thickness of inner wall(mm) 1 0.7 0.65 0.6 0.5
Surface Area(m2/m3) 577 886 950 1084 1294
Opening Ratio(%) 68 65 65 63 63
More Details
Jun 30, 2021
High Alumina Refractory Bricks

Product features：

1.High refractoriness
2.High-temperature strength
3.High thermal stability
4.Neutral refractory
5.Good resistance to acid and basic slag corrosion
6.High refractoriness under load

high alumina refractory bricks4

Physio-chemical Index of High Alumina Bricks :

Items First grade

high alumina brick

 Second grade

high alumina brick

 Third grade

high alumina brick

 Special grade

high alumina brick
LZ-75 LZ-65 LZ-55 LZ-80
Al2O3 % ≥ 75 65 55 82
Fe2O3 % ≤ 2.5 2.5 2.6 2.0
Bulk Density g/cm3 2.5 2.4 2.3 2.6
Cold Crushing Strength MPa ≥ 70 60 50 80
0.2MPa Refractoriness Under Load  ℃ 1510 1460 1420 1550
Refractoriness ℃ ≥ 1790 1770 1770 1790
Apparent Porosity % ≤ 22 23 24 21
Reheating Linear Change 1450℃×2h  % -0.3 -0.4 -0.4 -0.2

Applications of High Alumina Bricks:

High alumina bricks are popularly used for the masonry of industrial kilns’ inner linings, such as blast furnaces, hot blast furnaces, electric furnace top, reverberator, rotary cement kiln, and so on. Besides, high alumina bricks are also widely used as regenerative checker bricks, stopper of the continuous casting system, nozzle bricks, etc.

high alumina refractory bricks5

More Details
Jun 30, 2021
Alumina Carbon Bricks

Catalog

★ What are the Common Alumina Carbon Brick

Burned Micropores Alumina-Carbon Brick
Burned Micropores Alumina-Carbon Brick features
Burned Microporous Alumina-Carbon Brick Technique Data
Aluminium Carbon-based Refractories for Continuous Casting Tundish

★ Aluminum Carbon Bricks Application
★ Aluminum Carbon Bricks Manufacture Process
★ What are the Raw Materials and Binders of Aluminum Carbon Bricks

★ What are the Common Alumina Carbon Brick

1.Burned Micro-pores Alumina-Carbon Brick is mainly used for working lining of bosh above the air pip and belly. The average pore diameter of micro-pore alumina carbon brick is less than 1µm, and the volume percentage of the pores less than 1µm is no less than 70%.

Burned Microporous Alumina-Carbon Brick features

(1) Low porosity & low air permeability.
(2) high crushing strength & high thermal conductivity.
(3) Anti-slag, anti-alkali, anti-erosion ability.
(4) Good thermal shock stability.

Burned Microporous Alumina-Carbon Brick Technique Data

Item Index
RSAC-1 RSAC-2 RSAC-3
Al 2 O 3 ,% ≥ 65 60 55
C,% ≥ 11 11 9
Fe 2 O 3 ,% ≤ 1.5 1.5 1.5
Bulk density, g/cm 3 ≥ 2.85 2.65 2.55
Apparent porosity, % ≤ 16 17 18
Cold crushing strength, Mpa ≥ 70 60 50
Refractoriness under load(0.2Mpa, Ti) °C ≥ 1650 1650 1600
Thermal shock stability, times ≥ 100 100 100
Iron liquid corrosion index,% ≤ 2 3 4
Air permeability, mDa ≤ 0.5 2 2
Average pore size, mm≤ 0.5 1 1
Less than 1mm Pores volume percentage % ≥ 80 70 70
Anti-alkali performance,% ≤ 10 10 15
Thermal conductivity, w/m·k ≥ 13 13 13

2. Aluminium Carbon Refractories used for Continuous Casting Tundish, mainly include upper nozzle, lower nozzle, and stoppers, which are also called special-shaped aluminum carbon bricks. The raw materials of continuous casting nozzles and stoppers are corundum and graphite. A small number of additives are added to raw materials during the production process. Phenolic resin is used as a binder of alumina carbon nozzles and stoppers. After mixing, molding and drying, green bodies are burned in a non-oxidizing firing kiln. The firing temperature is 1350 °C, after machining, anti-oxidation coating can be spayed to the surface to prolong their service life.

Aluminum Carbon Refractories for Continuous Casting Tundish

(1) Good integrity and safe use.
(2) To better purify the molten steel.
(3) High strength, good resistance to molten steel, and slag erosion.
(4) Wear resistance and long service life.

★ Aluminum Carbon Bricks Application

Aluminum carbon bricks can be used in blast furnaces, continuous casting tundishes (long nozzles, submerged nozzles, stoppers, upper and lower nozzle bricks, slide plate bricks), ladle, hot metal cans, torpedoes, and other thermal equipment.

★ Aluminum Carbon Bricks Manufacture Process

Add graphite raw materials to alumina raw materials (corundum, mullite, bauxite), add small amounts of other raw materials such as silicon powder and SiC powder, then mixed with resin or asphalt binder, molded by press machine and finally fired at about 1300 ° C in a reducing atmosphere kiln.

★ What are the Raw Materials and Binders for Making Aluminum Carbon Bricks

For the unfired aluminum carbon bricks, the commonly used raw materials are corundum, mullite, first-grade high-alumina bauxite clinker, graphite, SiC, and Si powder. Commonly used binding agents are resin, tar, asphalt, and the like. Different raw materials should be used for the production of aluminum carbon bricks based on applications.

The above is a brief introduction to aluminum carbon bricks. If you need to purchase aluminum carbon bricks, RS Refractory can supply you with the best quality products at a competitive price. We can also customize refractory products according to your requirements and provide you best refractory materials and engineering solutions.

More Details
Jun 30, 2021
Alumina Silica Fire Brick for Sale

High-Purity Alumina Silica Fire Bricks Properties

High-Temperature Bulk Density
Excellent Capacity of Refractoriness under load
High Thermal Conductivity
Low Porosity
Excellent Abrasion Resistant Ability
Excellent Thermal Shock Performance

Alumina Silica Fire Brick Physical & Chemical Index

Item RSAS60 RSAS70 RSAS75 RSAS80
AL2O3(%) ≥60 ≥70 ≥75 ≥80
SIO2(%) 32 22 20 ≥18
Fe2O3(%) ≤1.7 ≤1.8 ≤1.8 ≤1.8
Refractoriness °C 1790 >1800 >1825 ≥1850
Bulk density,g/cm3 2.4 2.45-2.5 2.55-2.6 2.65-2.7
Softening temperature under load ≥1470 ≥1520 ≥1530 ≥1550
Apparent porosity,% 22 <22 <21 20
Cold Crushing strength Mpa ≥45 ≥50 ≥54 ≥60

Three Major Categories of Alumina Silica Bricks

Semi Siliceous Products (Al2O3≤30%)
Fire Clay Products (30%≤Al2O3≤48%)
High Alumina Products (Al2O3≥48%)

Different raw materials and volumes of components determine the kind of products.

Alumina Silica Fire Brick Applications

1. Steel furnaces
2. Ironmaking furnaces
3. Glass kiln
4. Ceramic tunnel kiln
5. Cement kiln

Our alumina silica fire brick products have been shipped all around the world, such as Thailand, Indonesia, Pakistan, Saudi Arabia, South Africa, Turkey, Iran, Iraq, etc. welcome to buy alumina silica firebrick at Rongsheng and enjoy our high-quality service. Please leave your message and we will be in contact as soon as possible.

More Details