$Raw Materials for Refractory:Sgs Certificate Factory Price Black / Green Silicon Carbide Made in China System 1$
$Raw Materials for Refractory:Sgs Certificate Factory Price Black / Green Silicon Carbide Made in China System 2$

$Raw Materials for Refractory:Sgs Certificate Factory Price Black / Green Silicon Carbide Made in China$

$Raw Materials for Refractory:Sgs Certificate Factory Price Black / Green Silicon Carbide Made in China System 1$

$Raw Materials for Refractory:Sgs Certificate Factory Price Black / Green Silicon Carbide Made in China System 2$

Raw Materials for Refractory:Sgs Certificate Factory Price Black / Green Silicon Carbide Made in China

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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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Size Distribution for Bonded Abrasives Micro powder(Resistivity Method)
				Unit: um
Size	Max grain size (dso)	Accumulation Height 3%(ds3)	Accumulation Height(dso)	Accumulation Height 94%(ds4)
#240	127	103	57±3.0	40
#280	112	87	48.0±3.0	33
#320	98	74	40.0±2.5	27
#360	86	66	35.0±2.0	23
#400	75	58	30.0±2.0	20
#500	63	50	25.0±2.0	16
#600	53	41	20.0±1.5	13
#700	45	37	17.0±1.3	11
#800	38	31	14.0±1.0	9
#1000	32	27	11.5±1.0	7
#1200	27	23	9.50±0.8	5.5
#1500	23	20	8.0±0.6	4.5
#2000	19	17	6.7±0.6	4
#2500	16	14	5.5±0.5	3
#3000	13	11	4.0±0.5	2
#4000	11	8	3.0±0.4	1.3
#6000	8	5	2.0±0.4	0.8
#8000	5	3.5	1.2±0.3	0.6

Packaging & Delivery

Packaging Details:	Plastic bags,1000kg per bag Or as your requirement
Delivery Detail:	Within 15 days after confirming the order

SGS certificate factory price black / green silicon carbide made in china

Q: Can anyone tell me the requirements of the refractory masonry?？: Refractory materials actually have two functions. The first one is to improve the refractoriness and the second one is to improve the body plasticity of refractory materials.The higher the aluminum content is, the better refractory it will be. Of course, the content of aluminum in refractory materials can not be impoved only by using kaolin. Such raw materials that contain more aluminum as bauxite chamotte should be used as framework.So the content of aluminum in kaolin does not need to be too high and more than 38% of aluminum is enough. However, the viscosity should be taken into account. It will be better if the viscosity is better as the extra bentonite do not need to be added.The refractoriness that is is above 1400 degree is enough.

Q: What's the fire endurance of fire windows?: Fire endurance of fire windows: A class fire window: no less than 1.2h; B class fire window: no less than 0.9h; C class fire window: no less than 0.6h. Technical requirements: 1. Materials and fittings: (1) Window frame should adopt the steel frame or wood frame with certain strength so as to guarantee the integrality and stability of the fitting; (2) Steel frame and mound layer can choose the galvanized steel sheet or stainless steel sheet. Its selection standard is in line with provisions of Article 5.1 in GB12955 "General Technical Requirements on Steel Fire Doors"; (3) Selection standard of wood frame and mound layer should be consistent with the provisions of Article 5.1.1 in GB14101 "General Technical Requirements on Wood Fire Doors"; (4) Filler material inside the steel frame and wood frame should be incombustible material; (5) Fireproof glass can choose the qualified product with no influence on the fire resistance test of the fire window, and its light transmittance should be no less than 75% of that of the ordinary sheet glass with the same layers; (6) Sealing material between the frame and the fireproof glass should use flame retardant material which can play the role of fire prevention and smoke control in the case of fire. (7) Hardware fittings should be approved supporting products which is detection qualified.

Q: What is unshaped refractory?: Concrete。 Early concrete technology appears, it is not forming products in the heat furnace, some parts such as pit heating furnace furnace wall, rotary kiln mouth ring, cutting slope and discharge chamber wall, etc., are able to design large masonry (top heating block weighing 3-4 tons) made concrete. Concrete cattle production method is to pour the material into the model, vibration molding, after the release of heat treatment, to provide users in addition to large blocks, weight, in use, and machine pressure brick no essential difference. The amount of water used in the casting material produced by the manufacturer is less than 10% above that in the field, and the processing quality is good and the quality is stable. As the bricks are large and heavy, the site shall have lifting equipment. As long as the site can be hoisted, the concrete shall be used as far as possible, or smaller ones, and some people can lift it. Concrete does not require the user to do a special heat treatment, this point is very meaningful.

Q: What are the materials for refractory materials? What are their names?: High temperature oxide materials in refractory special applications, such as aluminum oxide, lanthanum oxide, beryllium oxide, calcium oxide, zirconium oxide, refractory compounds, such as carbides, nitrides, borides, silicides and sulfides; high temperature composite materials, including metal ceramics, high temperature inorganic coatings and fiber reinforced ceramics.

Q: What kind of materials can be tested their electrical resistivity in the current refractory industry?: Graphite, Magnesium Oxide, and alumina are all feasible.

Q: Does anyone know about the classification standards of B2-level fireproof and thermal insulation materials?: The fire-resistant differences of B1- and B2-level extruded insulation boards are as follow: B1-level materials will be smothered as soon as staying away from fire, namely, they will be extinguished after leaving fire, or be put out in 10 seconds. B2-level materials will be in low-grade combustion, namely, the fire will not get wilder, and drippings will not ignite the filter paper. I hope my answer can help you!

Q: What is the interior fireproof thermal insulation material?: Polystyrene?board, extruded sheet and polyurethane are mainly used. Polystyrene?board is the cheapest, but the thermal insulation effect is ordinary. When absorbing water, it will deform. Other waterproof measures are needed to be made after insulating layer is done./

Q: What are Grade-A waterproof inorganic thermal insulation materials?: There is a market confusion in Grade-A waterproof inorganic thermal insulation materials. The products mainly include Grade-A monomer material like roc wool and ultra-thin insulation board and Grade-A composite material. Many Grade-B materials wraaped with calcium silicate board or foam cement belongs to Grade-A material, such as phenolic aldehyde composite. Some foamed materials with filling also belongs to Grade-A material. However, there are few products with Grade-A qualification. Many manufacturers are working on the margins of the records with Grade-A fireproofing performance examining report. But this situation will not be too long.

Q: What's the heat conductivity coefficient, specific heat capacity and density of the refractory material of magnesite-chrome brick and magnesia-alumina brick respectively?: It is suggested that you find some samples of well-known manufacturers, such as Ogilvy and Mather Group, and that will be more correct.

Q: For refractory, why is it necessary to store the first mixing materials for some time under proper moisture and temperature?: It is mainly to remove gas form chemical reactions in the pug, give full play to plasticity and binding properties of combined, and store unburned?brick whose cememting agent is phosphoric?acid or aluminium?phosphate for some time under proper moisture and temperature. For example, to avoid the formed bricks in the initial stage of drying and firing form cracking due to hydration of calcium oxide. Mixing materials is to store the first mixing materials for some time under proper moisture and temperature in order to improve the evenness and moldability of pud, such as making the distribution of combined clay and water more even. The length of storing chiefly depends on the process requirements and the characteristics of blanks. For the producing pug of high temperature kiln furnitures, the storing time is longer. The function of storing mxing materials varies with different natures of blanks. For honeycomb ceramics, it is to fully digest calcium oxide in blanks. For storing magnesia brick blanks containing much calcium oxide, it should be stored for some time in proper humidity and temperature.

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