$Raw Materials for Refractory Silicon Carbide for Ladle Refractory Castables System 1$
$Raw Materials for Refractory Silicon Carbide for Ladle Refractory Castables System 2$

$Raw Materials for Refractory Silicon Carbide for Ladle Refractory Castables$

$Raw Materials for Refractory Silicon Carbide for Ladle Refractory Castables System 1$

$Raw Materials for Refractory Silicon Carbide for Ladle Refractory Castables System 2$

Raw Materials for Refractory Silicon Carbide for Ladle Refractory Castables

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 2000 m.t./month

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Packaging Details:	25kg/PP bag, 1000kg/jumbo bag according your request.
Delivery Detail:	7 days after down payment

Mill Price Abrasive Silicon Carbide for Grinding Wheel

Brief Introduction of Silicon Carbide

Black silicon carbide consists crystalline silicon carbide, which is produced from silica sand

and petroleum coke in electric resistance furnaces at temperatures over 2300 °C. SiC is the

chemical formula of silicon carbide, i.e. carborundum. Silicon carbide is produced of carbo-

thermal reduction of silica to form an ultra-hard covalently bonded material.

Application of Silicon Carbide

1. Heating elements;

2. Coated tools;

3. Refractory;

4. Polishing, Lapping;

5. Ceramic.

Technical Data of Silicon Carbide

Grit	SiC	F.C.	Fe2O3
F12-F90	98.50%min	0.20%max	0.60%max
F100-F150	98.00%min	0.30%max	0.80%max
F180-F220	97.00%min	0.30%max	1.20%max
F230-F400	96.00%min	0.40%max	1.20%max
F500-F800	95.00%min	0.40%max	1.20%max
0-1mm,1-3mm,3-6mm	95.00%	0.30%max	1.20%max

$Silicon Carbide for Refractory Castables for Ladles$

Q: What are the fire protection standards of insulation materials?: The combustion performance of thermal insulation materials for exterior walls of all civil buildings, within the scope of fire design auditing and fire control acceptance, should be brought into the auditing and acceptance. As for the "Management Regulations on Supervisions of Fire Prevention and Control for Building Projects" (Ministry of Public Order No. 106) , all civil buildings which are out of the scope of Article 13 and 14 are included in the random check. Before the release of new standard, it must be strictly implemented the Article II of the "Fire prevention Interim Provisions on civil external wall insulation system and external wall decorative" ([2009] No. 46), namely, the insulation materials of civil buildings must use materials with A-level combustion performance.

Q: How can refractory materials be divided?: Refractory materials in China can be roughly divided into refractory products and unshaped refractories.

Q: Does anyone know the difference between refractory and thermal insulation material?: I will give you a relatively simple analysis. Refractory can bear above 1,200 degrees centigrade, but some refractory is not insulated. For example, refractory brick can be directly in contact with heat source, but it has little insulation effect. Refractory includes ceramic fiber, high silica and so on. And they can be also insulated. But insulation effect is not so good as insulation material. Insulation material generally can bear below 800 degrees centigrade, and it is large in thermal resistance, low in heat conductivity coefficient and high in porosity factor, thus reducing heat loss. Briefly speaking, insulated material is to store most heat, and just let a small quantity of heat run of through air, thus insulating heat. Refractory includes glass fiber, rock wool, aerogel blanket and so on.

Q: how about the performance of aluminum silicate fire proof thermal insulation?: aluminum silicate fire proof thermal insulation board has a good performance. it is a artificial board that separates the wood and plant fiber by mechanical and chemical methods and mixed the adhesion agent and water-proofing?agent, molding by high temperature and high press. MDF(medium density fibre board) structure is more even than natural wood. it avoids rot, moth-eaten and other problems, while medium density fiber board has small expansion and contraction, which is easy to be processed. Since the surface of medium density fibre board is smooth, the board is easy to paste a variety of finishings, which makes furniture more beautiful. A variety of decorative wood-based panel is to embellish their homes.

Q: Who can introduce the external wall thermal insulation materials fire rating regulations?: 1. The thermal insulation material of level A combustion performance: Rock wool, glass wool, foam glass, foamed ceramics, foam cement, hole-closed perlite, etc. 2. combustion performance is level B1 insulation materials: Extruded polystyrene board (XPS) after special treatment / Special treatment of polyurethane (PU), phenolic aldehyde and gelatine powder polyphenyl granule 3 combustion performance is level B2 insulation material: Molding polystyrene board (EPS), extruded polystyrene board (XPS), polyurethane (PU), polyethylene (PE), etc. See the 2009 edition construction technical measures 4.3.6 Level A insulation material is only for fireproofing, but its thermal insulation performance is not better than organic XPS \\ EPS and other materials. I feel the best insulation materials should be modified phenolic board, which can keep insulation and fireproofing, but the unit price is very expensive. Insulation materials in the domestic market have some disadvantages, it is better to considere the materials within the acceptable range in the building needs.

Q: What is high alumina refractory?: High alumina refractory: High alumina refractory products, with high refractoriness, compressive strength and refractoriness under load, it is used for masonry of a variety of large-scale blast furnaces such as steel furnace, air heating furnace and electric furnace, and for high-temperature parts of thermal equipment like rotary?kilns.

Q: Who knows about the fire endurance of grade C fire doors?: The fire endurance of grade C fire doors is no less than 0.5 hours. As the key role of family fireproofing, fire doors is particularly important. It can be classified according to the fire endurance and thermal insulation performance: The fire endurance of grade A fire doors is not less than 1.5 hours; that of grade B fire doors is not less than 1.0 hours; and that of grade C fire doors is not less than 0.5 hours. We can choose in accordance with different needs, but commonly used fire doors are grade A and B fire doors now.

Q: what should be paid sttention when buying the refractory?: solve the resources and the cost as much as possible. Accurate understanding and knowing the material temperature changes of various partsin order to choose the appropriate refractories. 4： 3, work performance, for example, take measures to ensure the overall life, and it is a very good buying principles: melting in high temperature metal erosion. These are the four major problems to consider when using refractory. You can choose low prices and low transportation costs of materials to meet the basic principles under the conditions described above. 2.carefully observe the material to prevent the desturction and reducing the costs. according to the structure of furnace, reasonable coordination of all parts of the material, fully take the advantages of material characteristics and strive to develop the recycle, to avoid the destruction of the materials.1. the working characteristics and the sport condition and analyze the reason of destroying the material, which can not only gurantee the product quality and reduce the expenses, get familiar with the chemical component and physics of the material.

Q: Classification of porosities in refractories and their effects on properties: The first two types of stomata are commonly examined, known as apparent porosity.

Q: Which refractory is better for building 1500 degree kiln ?: High alumina brick or 99 alumina hollow ball brick is OK, which can withstand a temperature of 1600 ℃.

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