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Jun 29, 2021
Graphite Electrodes HP

The main raw material of graphite electrode is petrol coke, in regular power graphite electrode, a little amount of pitch coke can be added into the raw material. Both petrol coke and pitch coke should contain no more than 0.5% of sulfur. During producing HP graphite electrode and UHP graphite electrode, needle shape coke should be added into raw material. Petrol coke is the main material for the production of aluminum industry graphite anode, and its sulfur content should not exceed 1.5%~2%.

hp graphite electrode2

The Advantages of Graphite Electrode

It is the best electrode material for electric arc furnace steelmaking.
High sublimation point, excellent electric conductivity, high mechanical strength.
Produces CO and CO2 gases when oxidized, won’t contaminate steel.
The density can be adjusted to obtain the best thermal shock resistance.
Low price, easy to process, is the ideal industrial material.

Physical & Chemical Properties of HP Graphite Electrodes

Items Classification Unit Nominal Diameter (mm)
HP Graphite Electrode
200-400 450-500 550-600
Resistivity Electrode μΩm 7 7.5 7.5
Nipple ≤ 6.3 6.3 6.3
Bending Strength Electrode Mpa 10.5 10 8.5
Nipple ≥ 17 17 17
Young’s Modulus Electrode Gpa 14 14 14
Nipple ≤ 16 16 16
Bulk Density Electrode g/cm3 1.6 1.6 1.6
Nipple ≥ 1.72 1.72 1.72
CTE（100℃-600℃） Electrode ×10-6/℃ 2.4 2.4 2.4
Nipple ≤ 2.2 2.2 2.2
Ash Content Electrode % 0.5 0.5 0.5
Nipple ≤

Graphite Electrode HP Current Capacity

Nominal diameter Permissible current power The current density (A / cm2)
Millimeter (mm) Inch (inch)
300 12 10000-13000 17-24
350 14 13500-18000 17-24
400 16 18000-23500 16-24
450 18 22000-27000 16-24
500 20 25000-32000 15-24
600 24 30000-36000 14-24

The Length & Diameter & Permissible Deviation of Graphite Electrode HP

Diameter Length
Nominal diameter Actual diameter Nominal length tolerance
Millimeters (mm) Inch (inch) Max. (Max.) Min (min) mm Length the maximum
300 12 307 302 1600 1800 ± 100 -100 -275
350 14 357 352
400 16 409 403
450 18 460 454
500 20 511 505 1600/1800/2000/2200
1800/2000/2200
1800/2000/2200/2400
1800/2000/2200
1800/2000/2200		 ± 100 -100 -275

Application of HP Graphite Electrode

The main application of HP graphite electrode is electric furnace steelmaking mill, which consumes about 70~80% of graphite electrode. HP graphite electrode are suitable for EAF furnaces with 18~25A/cm2 current intensity. Meanwhile, HP graphite electrode is also used in ore electric furnaces which are used for making industrial silicon and yellow phosphorous. HP graphite electrodes are also used in resistances such as graphitization furnace for producing graphite products, glass melting furnace and electric furnace for producing silicon carbide.

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Jun 29, 2021
Graphite Electrodes RP

Advantages of RP Graphite Electrodes For Sale in RS

1. Our product is made of high quality low ash materials, such as petroleum coke, needle coke and coal pitch.
2. From calcining, burdening, kneading, forming, baking to pressure impregnation, graphitization, we pay attention to every detail to make it boutique.
3. We know machining is very important, so we precision machined with professional CNC machining to make sure high quality.
4. Such of the products own characteristics with low resistivity, good electrical conductivity, low ash, compact structure, good antioxidation and high mechanical strength.

RP Graphite Electrode technical parameters

Items Classification Unit Nominal Diameter (mm)
      75-130 150-225 250-300 350-450 500-800
Resistivity Electrode μΩm 8.5 9 9 9 9
  Nipple   8 8 8 8 8
Bending Strength Electrode Mpa 10 10 8 7 6.5
  Nipple   15 15 15 15 15
Young’s Modulus Electrode Gpa 9.3 9.3 9.3 9.3 9.3
  Nipple   14 14 14 14 14
Bulk Density Electrode g/cm3 1.58 1.53 1.53 1.53 1.52
  Nipple   1.7 1.7 1.7 1.7 1.7
CTE (100℃-600℃) Electrode ×10-6/℃ 2.9 2.9 2.9 2.9 2.9
  Nipple   2.7 2.7 2.8 2.8 2.8
Ash Content   % 0.5 0.5 0.5 0.5 0.5

Graphite Electrode RP Current Capacity

Nominal diameter Permissible current power The current density (A / cm2)
Millimeter (mm) Inch (inch)
300 12 10000-13000 17-24
350 14 13500-18000 17-24
400 16 18000-23500 16-24
450 18 22000-27000 16-24
500 20 25000-32000 15-24
600 24 30000-36000 14-24

The Length & Diameter & Permissible Deviation of Graphite Electrode RP

Diameter Length
Nominal diameter Actual diameter Nominal length tolerance
Millimeters (mm) Inch (inch) Max. (Max.) Min (min) mm Length the maximum  
300 12 307 302 1600 1800 ± 100 -100 -275
350 14 357 352
400 16 409 403
450 18 460 454
500 20 511 505 1600/1800/2000/2200
1800/2000/2200
1800/2000/2200/2400
1800/2000/2200
1800/2000/2200		 ± 100 -100  

Application of RP Graphite Electrode

Electric furnace steelmaking mill is the largest user of graphite electrodes. Graphite electrodes used in steelmaking accounts for 70%-80% of the total graphite electrodes production. Graphite electrodes are used to conduct electric current into electric furnace, electric arcs generated between electrodes end and loaded materials can release large amount of heat for high temperature smelting.

(1) For Resistance Furnace
The graphitization furnace for producing graphite products, the furnace for glass melting, and the electric furnace for producing silicon carbide are all electric resistance furnaces. Materials loaded in these furnaces are not only heating resistances but also the objects to be heated. Usually, graphite electrodes for electric conduction are embedded in the wall of resistance furnace end part, so the graphite electrode used here is not continuously consumed.

(2) For the Production of Special Shaped Graphite Products
Graphite electrode workblank is also used to make a variety of special shaped graphite products such as crucible, mold, boat vessel and heating component. For example, in quartz glass industry, for every ton of electrofusion tube, 10t of graphite electrode blank is required, for every ton of quartz bricks, 100 kg of graphite electrode blank is consumed.

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Jun 29, 2021
Ceramic Fiber Blanket

Application of Ceramic Fiber Blanket

Ceramic Fiber Blankets can be used in various applications which include Petrochemical, Refining, Steel, Ceramic, Glass, Fire Protection and Power Generation. This product can be fabricated and shop installed for most applications.

Ceramic Fiber Blanket Description

Classification temperature (℃) 1140 1260 1400 Testing Standards
Brands LYGX-112 LYGX-212 LYGX-312 LYGX- 422 LYGX-512  – –
Linear shrinkage (%) 950℃X24h5≤-3 1000℃X24h5≤-3 1100℃X24h5≤-3 1200℃X24h5≤-3 1350℃X24h5≤-3 GB/T17911
Thermal conductivity(W/mK)(128Kg/m3) ≤0.153 YB/T4130
(Average500℃)
Compressive strength(h(thickness 25mm) ≥0.04 ≥0.05 ≥0.04 ≥0.06 GB/T17911
Bulk dencity (Kg/m3) 64/96/128/160 GB/T17911
Chemical composition (%) Al2O3 (%) ≥44 ≥45 ≥45 ≥53 ≥36 GB/T6900 GB/T4984
  Sio3 (%) ≥52 ≥52 ≥54 ≥46 ≥48  
  Zro3 (%)   __ __   __   __ _   __ _ ≥15  
  Fe2o3 (%) ≤1.0 ≤0.8 ≤0.2 ≤0.2 ≤0.1  
  AL2o3 +SiO2 (%) ≥96 ≥97 ≥99 ≥99    
  AL2o3 +Sio2 (%)   __ __   __   __ _   __ _ 99  
Available size (mm/roll) 3600/7200X610X20/30/50   __
Packaging Inside Plastic bag,outside woven bag Carton   __
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Jun 29, 2021
Ceramic Fiber Board

Ceramic Fiber Board Description

Items STD RFC Board HP RCF Board HZ RCF Board
Bulk Density(Kg/m3) 280/300/320 280/300/320 280/300/320
Classification Temperature (℃) 1260 1260 1430
Maximum Operating Temperature(℃) 1100 1200 1350
Water Content(%) ≤1 ≤1 ≤1
Linear Shrinkage After Heating(%) 1000℃*24h<2.5 1100℃*24h<2.5 1350℃*24h<2.5
Thermal Conductivity(W/mK)      
200℃ 0.074 0.055 0.078
400℃ 0.092 0.073 0.102
500℃ 0.103 0.086 0.116
600℃ 0.127 0.105 0.135
Cold Crushing Strength(Mpa) 0.2 0.12-0.2 0.12
Loss Of Lgnition(wt%) ≤7 ≤7 ≤7

Ceramic Fiber Board Application

Use in industrial heat process equipment
High temperature gasket & seals
Flue & chimney linings in furnace & kilns
Molten metal trough covers
Expansion joint Industrial heat shields & thermal barriers
Industrial combustion chamber construction
Infra red element supports
Board over blanket hot face lining
Full thickness refractory lining
High temperature boiler wall insulation
Pouring forms for castable
Lining material for glass annealing furnace
Various fire-resistant insulation materials
Insulation for semiconductor equipment

Ceramic Fiber Board Manufacturer

Ceramic fiber boards produced by RS refractory brick are adopting high quality raw material and produced through strict control. RS refractory manufacturer is specialized in producing various ceramic fibers, such as ceramic fiber blankets, ceramic fiber boards, ceramic fiber papers, ceramic fiber wools, ceramic fiber ropes, ceramic fiber cloths. If you have any purchase plan for ceramic fiber refractory materials, please feel free to contact with us!

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Jun 29, 2021
Ceramic Fiber Module

RONGSHENG ceramic fiber module use the enhanced H-type anchors, which have greater strength, closer to the cold face. It can make sure the strength in high temperature. The fixed link was welding together with the high quality heat-resistance steel and stamping butterfly plate. The two round fixed link were embedded in the module system, enlarged the bearing area and ensured the firm of anchor system.

Characteristics

Low bulk density,low thermal conductivity.
Resistance to heat-shock, ability to resist the scouring of airflow.
Excellent mechanical strength ,built-in anchor, safety performance.
Easy to install. after installing the lining form a seamless space, good insulation effect.

Application of Ceramic Fiber Module

Ceramic Industry:Tunnel kiln, shuttle kiln, roller kiln.
Petrochemical Industry: Atmospheric furnace, transforming furnace, coking furnace, cracking furnace, flue etc.
Iron and Steel Industry: Ladle cover, annealing furnace,rotary furnace,bell furnace,walking beam furnace，hot air and flue pipes etc.
Green energy industry：Waste incinerators, RTO exhaust treatment furnace, SCR environmental catalytic stove etc.

Technical Index

Ceramic Fiber Module RS1050 RS1260ST RS1260HP RS1350
HA		 RS1430
Zr		 RS1600
PMF
Classification Temperature 1050 1260 1260 1350 1430 1600
192kg/m3/at()℃/24h
Linear Shrinkage Rate		 ≤2.0
(850℃)		 ≤2.0
(1000℃)		 ≤2.0
(1050℃)		 ≤2.0
(1100℃)		 ≤2.5
(1200℃)		 ≤1.5
(1450℃)
Density (KG/M3） 172-240 172-240 172-240 172-240 172-240 172-240
Thermal Conductivity Rate(W/m.k) 400℃ 0.08 0.08 0.08 0.08 0.08 –
  600℃ 0.15 0.15 0.15 0.12 0.12 0.12
  800℃ 0.22 0.20 0.19 0.18 0.16 0.15
  1000℃ – – 0.22 0.12 0.19 0.18
Chemical Composition（%） Al2O3 42-44 45-46 47-49 52-55 34-36 72-75
  Al2O3+SiO2 ≥99.0 ≥99.0 ≥99.0 ≥99.0 ≥99.0 ≥99.0
  ZrO3 – – – – 15-17 –
  Other ≤1.0 ≤1.0 ≤1.0 ≤1.0 ≤1.0 ≤1.0

Standard Size and Package

(300-600)*300*(150-300)mm，(Other specifications according to customer’s inquires).
Density:172KG/M3、192KG/M3、220KG/M3、240KG/M3
Package：Carton+Pallet.
Installation：RONGSHENG also provide professional construction guidance and installation services.

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Jun 29, 2021
Calcium Silicate Boards

Heat Preservation Calcium Silicate Board

Heat preservation calcium silicate board is also called micro pore calcium silicate, it is white, hard, new type heat preservation material, with low volume weight, high strength, low thermal conductivity, high temperature resistance, corrosion resistance, can be cut or sawed. The thickness is usually above 30mm, bulk density is between 200~1000kg/m3.

The Characteristics of Calcium Silicate Board

High strength, low volume density.
Has good processing property and fire resistance.
Low thermal conductivity, excellent heat insulating performance.
Good water proof property, won’t expand or deform at wet atmosphere.
Long service life, alkali and acid corrosion resistance.

Calcium Silicate Products Physical Index

Item Model I Model II
Density  kg/m3 240 240
Bending strength Kpa 310 310
Crushing strength (5% deformation) Kpa 414 414
24 hours heat-holding treatment temperature ℃ 649 871
Linear shrinkage rate % 2.0 2.5
Warping mm 6 6

Calcium silicate boards applications

Calcium silicate boards are used as heat preservation material for thermal tubes, industrial furnaces and kilns, the application industries cover power plant, chemical industry, metallurgy, shipbuilding industry and so on. Calcium silicate board is used as fire-proof and heat insulating material for buildings and apparatus. The insulating lining of high temperature drying kiln and tunnel kiln car working table is also made by calcium silicate boards. The two sides of calcium silicate board can be adhered with plastic decoration board, plywood, asbestos cement board and so on to form composite board, which has the function of decoration and fireproofing, as well as sound insulation.

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