HY-SIO2 97% Silicon Carbide (SIC) High Purity Silicon Carbide - Factory Direct Manufacture

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HY-SIO2  97%  silicon carbide (SIC) high purity silicon carbide - Factory Direct manufacture

silicon carbide

Silicon carbide

silicon carbide (SiC) with quartz sand, petroleum coke (or coal), wood chips as raw material in electric arc furnace smelting made. In nature there are silicon carbide rare mineral, Moissanite. Silicon carbide, also known as Moissanite. In contemporary C, N, B and other non-oxide refractory materials in high-tech, silicon carbide is the most widely used and most economical one. Can be called emery or refractory sand. Silicon carbide is quartz sand, petroleum coke (or coal), wood chips (need to increase the production of green silicon carbide salt) and other raw materials at high temperature resistance furnace smelting. At present, China's industrial production of silicon carbide is divided into two kinds of black silicon carbide and green silicon carbide, are hexagonal crystals, accounting for 3.20 to 3.25, micro hardness of 2840 ~ 3320kg / mm2.

 

Uses 
(A) as an abrasive, can be used for abrasive, such as wheel, Whetstone, grinding, sand tile and so on. 
(2) as a metallurgical deoxidizer and high temperature materials. 

 

Silicon carbide has four major application areas, namely

functional ceramics, advanced refractories, abrasives and metallurgical materials. Silicon carbide has been able to present a large supply of coarse material, can not be considered high-tech products, and high-tech applications nanoscale silicon carbide powder is impossible to form a short period of economies of scale.

 

Silicon Carbide Chemical Specification: 

 

Spec

Green Sic

Black Sic

Min   %

Min %

Max %

Max %

Max %

SiC

99

97

95

92

90

Free Carbon

0.2

0.5

1

2.5

3

Fe2O3

0.2

1.0

1.5

2.0

2.5

SiO2


1.5

2.5

3.5

4.0


HY-SIO2 97% Silicon Carbide (SIC) High Purity Silicon Carbide - Factory Direct Manufacture

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Q:What are the qualifications of refractory industry?
Special qualification issued by Fire department
Q:What is acid refractory material?
In fact, with the content of zirconia refractory multiple theory should also be acid refractory
Q:whether the aluminum silicate thermal insulation material is fireproof or not?
aluminum silicate is fireproof, and the melting point is between -40 ~ 800 ℃. Aluminum: it takes the flint clay clinker as raw material, produced by resistance or electric arc furnace fusion and injection fiber-forming process. its characteristics: Low thermal conductivity, excellent thermal and chemical stability, without binder and corrosive material.
Q:What's the requirements of fire-fighting criteria of heat insulating material?
It shouldn't be under than B2 level. Roofing insulation fire rating requirements: the ministry of public security, housing and urban-rural development department issued about printing and distributing the civil building external thermal insulation system and the interim provisions on the exterior wall decorative fireproof prescribed in the notice: roof grassroots adopted duration of fire resistance is the non-combustible component that shouldn't less than 1.00 h's. Its roof insulation materials should not be below B2; Otherwise, the combustion performance of insulating material should not be below the B1 level. The junction of the roof and wall, the insulation layer around the opening part of roof should use the grade A thermal insulation material to set level fire-fighting belt that width is not less than 500 mm.
Q:What is carbon composite refractories? I hope that the answer is in detail.
Q:What is the mechanism of the errosion of the iron to the refractories?
For example, the effect of the iron oxide: Mo corundum given temperature Fe2O3 solid solubility limit of the solid solution formed of corundum stone high solubility than the solid solution Mo Mo corundum lattice shape so Fe2O3Al2O3-SiO2-based material starts melting temperature of the system or the content of Al2O3 and Al2O3 / SiO2 ratio off Al2O3 / SiO2 & lt; 2.55 starting melting temperature of 1380 ℃ when Al2O3 / SiO2 & gt; 2.55 start melting temperature is increased 1460 ℃ and with its Al2O3 content increased gradually to increase the original atmosphere Fe2O3 original FeO off the solvent into the glass phase and the system starts melting temperature drops do not fall to 1240 ℃ 1380 ℃. Lower the melting point, increase the erosion, and reduce the life span.
Q:How to do environmental impact assessment for refractory Co., Ltd.
1, first of all, the EIA unit and the construction party signed the EIA contract. The contract is only legally valid. Generally speaking, the contract will indicate that the first payment has been received before the work begins.2. Collecting information. This is a very important link in the EIA, which is directly related to the quality of the eia. There is a great variety of data,Generally, the construction party will write a list of environmental impact assessment information.
Q:What are the commonly used admixture for alumina-magnesia refractory? What are the impacts on its performance?
2, form Mg-SiO2 coagulation and combination, CA cement bond? Bricks can generally be made by combing with phenolic resin, castable use 1, combined with silicon powder; 3, can also combined with brine MgCl is binding agent
Q:What antioxidant will be used in refractories?
Antioxidant: Si, Al, Mg, Ti, AlSi, AlMg, SiC, TiC, ZrC and these metal nitride, boride. Sintering agent: different mechanism, Cr2O3 to promote the sintering of alumina;CaO/MgO style promote ZrO sintering;Siliceous ramming material to add boron bottles, magnesia coating and clay, etc.
Q:What are the specifications of fireclay bricks?
Dimensions of refractory bricks : 230 * 115 * 65mm

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