International Standard Semi-Graphite Silicon Carbide Carbon Brick for Kiln Refractory

Hot selling kiln refractory sic silicon carbide blocks

The refractory material made of SiC as the main raw material. Containing SiC 72% ~ 99%. It is divided into clay, Si3N4, Sialon, β-SiC, Si2ON2, and recrystallized.
Silicon Carbide brick high thermal conductivity, good wear resistance, thermal shock resistance, corrosion resistance.
Can be used for aluminum electrolytic cell lining, molten aluminum and ceramic kiln furniture, large and medium-sized blast furnace body bottom, furnace waist and furnace belly, aluminum refining furnace lining, zinc distillation tank lining.
Silicon carbide brick is the beginning of the 1970s, first in the ultra-high-power electric furnace, then in the converter, furnace refining furnace used, get a very good effect. Thus, it is recognized that the graphite, carbon materials and high temperature refractory oxide between the role of the combination.
Fracture toughness is poor, high temperature peeling, poor resistance to slag, which is high temperature firing refractory products fatal shortcomings, carbon refractory products break through these weaknesses.
In the silicon carbide brick, magnesium oxide and graphite are wrapped with each other, and there is no so-called sintering in the traditional concept. The graphite has the advantages of high thermal conductivity, low elastic modulus, small thermal expansion coefficient, Due to the introduction of stone black, so that the lining of refractory products, fracture toughness and resistance to slag permeability of the essential improvement.
The main feature of silicon carbide bricks is the formation of carbon conjugates on microstructures, which are formed by coking carbonization at high temperatures by organic binders.
Silicon carbide brick is a non-burning products, the physical and chemical indicators: MgO70 ~ 85%, C l0 ~ 20%, significant porosity ≤ 3%, bulk density 2.87g / cm3, compressive strength 40 ~ 50MPa, 1400 ℃ Folding strength l0 ~ 15MPa.

A refractory made of SiC as the main raw material. Contains SiC 72% to 99%. It is divided into silicon carbide bricks such as clay bonding, Si3N4 bonding, Sialon bonding, β-SiC bonding, Si2ON2 bonding and recrystallization. The silicon carbide brick has high thermal conductivity and good wear resistance, thermal shock resistance and corrosion resistance.

Hot selling kiln refractory sic silicon carbide blocks process
The formulation of coarse, medium and fine SiC should be 5:1:4.
The raw material for the manufacture of SiC bricks is generally black SiC, and its chemical composition is as follows: SiC 98.0%, free C O. 5%, Fe 0.2%, free SiO2 0.6%.
Due to the different bonding methods, the process is different.
(1) silicon nitride bonded silicon carbide brick: a blank formed by using coarse, medium and fine silicon carbide particles and fine silicon powder, and in pure N2 gas, a kind is produced at 1370 ° C. 26alpha;-SiC is the backbone and is in %26alpha; and %26beta;-Si3N4. The silicon nitride of the matrix is bonded to the silicon carbide brick. There is still a small amount of residual silicon and SiO2N2 in the matrix, and the relative amounts of these components vary from manufacturing plant to manufacturing plant.
(2) Combining silicon carbide bricks: SiC, silicon powder and carbon powder are mixed and formed according to a certain ratio, and fired in a reducing atmosphere at 1400 °C. In most cases, carbon burning is used. During the firing process, a %26beta;-Si3N4 bonded SiC brick with %26alpha;-SiC as the framework and fine grain %26beta;-SiC as the matrix was produced. %26beta;-SiC is formed by the reaction of fine silicon powder with fine carbon powder during the firing process. This product also contains a small amount of residual silicon and carbon.
(3) Silicon oxynitride combined with silicon carbide brick: When this brick is compounded, the proportion of fine silicon powder is less than si. N. Combine the ratio of silicon carbide bricks. After molding, it is fired in a N2-rich atmosphere (requiring a certain partial pressure of O2), and the firing temperature is 1350 to 1400 °C. The finished product is a framework of %26alpha;-SiC, which is a matrix of Si2ON2 combined with SiC bricks, and a small amount of Si and Si3N4 are present in the matrix.
(4) Sialon combined with silicon carbide brick: Si3N4 and Al2O3 fine powder are blended in SiC with a certain particle size ratio. After mixing, adding a binder, kneading, molding, and firing in a reducing atmosphere

  Hot selling kiln refractory sic silicon carbide blocks

Hot selling kiln refractory sic silicon carbide blocks

Packing: 

Standard export wooden pallet with cardboard and PET strap.

1. Strong packing will protect the goods from any possible damage during transit.
2. Solid packing and overall stuffing can prevent the cases from vibration and jarring.
3. We must take necessary precaution that the packing can protect goods from pilferage or rain.
4. We can confirm that we take every possible precaution to ensure that our products reach our customers all over the world in prime conditon.

Shipping: 

By vessel or by train from any Chinese port, Samples can be delivered by International express.

Delivery:

15-30 days working day for large quantity. The shipment we will arrange as soon as possible. Of course, if it is a custom products, the shipping time will delay.
Sample:

Usually by EMS, DHL, UPS, TNT, FedEx. Anyway you like. Bulk order: Usually by sea.

Payment:

It can be through T/T, L/C at sight. The specific terms determined according to the quantity of the goods, etc.
Your inquiry related to our product & price will be replied within 24 hours.
Export:
Our products have been exported to many countries: Australia, Chile, USA, Russia, UK, Indonesia, etc., good quality have be approved by our clients.

Henan hongtai kiln refractory co., LTD. Is well aware that there are thousands of demands from customers, which can be summarized in four aspects: reliable quality, timely delivery, reasonable price and considerate service.The company will continue to adhere to the corporate spirit of "contributing to society and serving customers" and the business philosophy of "mutual benefit, win-win, integrity, efficiency, preciseness and responsibility".Our company is willing to develop a wide range of technical exchanges with colleges and universities and colleagues from all walks of life at home and abroad in a flexible and diversified way.

Henan hongtai kiln refractory co., LTD. : "quality first, reputation first, customer first: it is our aim."Scientific management, strong technical force, perfect testing means, advanced technological equipment and stable product quality are the guarantee of quality service.Henan hongtai kiln refractories co., LTD sincerely hopes to cooperate with you hand in hand and in good faith.

Henan hongtai kiln refractory co., LTD. Main products are high alumina brick, clay brick, fused zirconium corundum brick, fireproof ball lightweight insulation brick, wear-resistant pouring material, corundum pouring material, low cement high strength pouring material, impermeable material, self-flowing material, plastic material, and various types of refractory materials.For different industries, the cement industry with anti-flaking high-alumina bricks, alkali resistant bricks, phosphate bricks;Boiler industry USES all kinds of brand wear-resisting brick, corundum brick, mullite brick and other finalizing materials.The company insists on "product quality is the life, enterprise integrity is the foundation", in the fierce market competition, won many users' trust and praise.The products are sold all over the country, as far as Vietnam, India, Korea, Pakistan, kazakhstan, and other southeast Asian countries and regions.

1. Strong professional: 
Our company has thirty years producing experience in refractory products. Our manager will supervise on a various refractorys production materials, process control, quality supervision and package delivery, and ensure the products are 100% qualified. 
2.Annual supply: 
Our company has passed ISO9001 quality management system certification and SGS certification. And the annual supply of shaped and unshaped refractory product is 28, 800-35, 000 tons. 
3. Export experiences: 
Now we have gained a global sales network reaching Taiwan, Russia, Korea, Vietnam, Pakistan, Bulgaria, French, India, Congo, Angola, South Africa, and so on. 
4. Production equipment: 
Production and testing equipments are new, complete and automated or semi- automated. Such modern facilities and equipments have provided the fine technical guarantee for the production and testing. 
5. Testing equipment: 
Our company's testing equipments as follows: 
High Temperature RUL Tester
Bulk Density Tester
The Pressure Tester
Refractoriness Tester