Refractory Silicon Carbide SIC Bricks For Furnace with Excellent Thermal Conductivity

 Refractory Bricks Silicon Carbide Brick With Good Price

The silicon carbide brick is a refractory material made of SiC as the main raw material.Containing 72% ~ 99% SiC.It is divided into clay bound, Si3N4 bound, SiAlon bound, β-SiC bound, Si2ON2 bound and recrystallization silicon carbide bricks.Silicone carbide brick has high thermal conductivity, good wear resistance, thermal shock resistance and corrosion resistance.

It can be used for lining of aluminum electrolytic cell, molten aluminum conduit, kiln furniture for ceramic kiln, bottom part of furnace body, waist and belly of large and medium-sized blast furnace, lining of aluminum refining furnace, lining of zinc distillation tank, etc.

Silicone carbide brick • production process
Coarse, medium and fine SiC should be formulated as 5:1:4.The raw material for manufacturing SiC brick 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 combination methods, the process is different.The brief process of different combination methods is as follows: (1) Si3N4 bonded silicon carbide brick: the blank body formed by coarse, medium and fine Si3N4 particles and fine silicon powder produces a kind of %26alpha at 1370℃ in pure N2 gas;-SiC as skeleton and with %26alpha;And % 26 beta;- Si3N4.The silicon nitride bonded silicon carbide brick is the matrix.There is a small amount of residual silicon and SiO2N2 in the matrix, and the relative contents of these components vary from plant to plant.(2) combined with silicon carbide brick: SiC, silicon powder, carbon powder according to a certain ratio, mixing, molding, burning in a reducing atmosphere at 1400℃.Buried charcoal burning is used in most cases.During the firing process, a %26alpha is produced;-SiC as the skeleton, with fine grain %26beta;-SiC is % 26Beta of matrix;-Si3N4 bonded SiC brick.%26beta;-SiC is produced by the reaction of fine silicon powder and fine carbon powder during sintering. This product also contains a small amount of residual silicon and carbon.(3) SiO2 - Nitride bonded silicon carbide brick: when this brick is mixed, the ratio of fine silicon powder is less than Si.N.Combine the ratio of silicon carbide brick.After molding, it was sintered at 1350 ~ 1400℃ in a N2 rich atmosphere (requiring a certain O2 partial pressure).The finished product is a kind of %26alpha;-SiC is the matrix of Si2ON2 binding SiC brick, there are a small amount of Si and Si3N4 in the matrix.(4) Cylon bonded silicon carbide brick: Si3N4 and Al2O3 fine powder is added into the SiC with a certain particle size ratio.After mixing, adding binder, mixing, molding, burning in reducing atmosphere

According to the different combination ways, the specific production process and performance of silicon carbide brick are as follows:
First, silicon carbide brick combined with silica
All to silicon carbide particles and fine powder, with part of silica, quartz fine powder as binder composition of products, are silicon dioxide combined with silicon carbide products.
Such as the use of 90% different particle size of silicon carbide and 5%-10% of the mixture of silica and calcium oxide powder (less than 0.088mm), the mixing ratio of 8:2 or 9:1.An appropriate amount of organic binder (pulp waste liquid, dextrin, methyl cellulose) was added into the mud, which was pressed and formed by the brick press, dried and fired at 1300 ~1400℃

Second, clay bonded silicon carbide brick
Clay combined with silicon carbide products are silicon carbide as the main raw material, with clay as the binder fired refractory products.The product has high thermal conductivity, thermal shock resistance and good wear resistance.Used as lining brick for aluminum refining furnace, distillation tank for zinc distillation furnace and cooler for cement kiln.

Three, high aluminum combined with silicon carbide brick
(1) Production technology.Using silicon carbide (SiC 98.32%) and Chenxi mullite as raw materials, the mullite combined silicon carbide brick was made.SiC sand particle size is 8~5mm, 5~3mm, 3~1mm.The mixed fine powder is made of silicon carbide powder and mullite powder, the particle size of which is less than 0.044mm.After batching, the material is mixed and trapped in the mixing machine for 24h, and the material is formed on the vibration pressure molding machine.The blank body was naturally dried for 15 days, dried for 15 days at 30 ~35℃, and baked for 6 days in a kiln at 200 ~350℃.Products are fired in the inverted flame kiln.The maximum sintering temperature is 1500℃, holding for 6 days, and the total sintering time is 10 days.
(2) Physical and chemical properties.The physical and chemical properties of mullite combined with SiC brick are as follows: SiO2 82%, mullite 15%, apparent porosity 17%~19%, volume density 2.54g/cm3, load softening temperature more than 1700℃, compressive strength more than 110MPa, thermal shock resistance (1100℃ ~ water cooling) more than 20 times.This kind of silicon carbide brick can be used for iron outlet of ferroalloy electric furnace and ring brick of blast furnace tuyeres.
.

Packaging

1. 1 ton bags in container, 25 MT/20'FCL.
2. 25kg bags in container, 25 MT/20'FCL
3. 25kg bags in ton bags, then in container, 25 MT/20'FCL
4. as the customer' request

Packaging of SK37 High Alumina Refractory Brick

1.on wooden pallets with plastic cover: wooden pallet size :930*930 or 1000*1000mm,
2.Load weight of each pallet: 1.5-2.0 tons,

Shipping of SK37 High Alumina Refractory Brick

1.Our packaging is as per customer’s request
2.Normal goods delivered by sea transport
3.Sample shipping by express
4.We will shipping and delivery goods timely, quality and quantity guaranteed, and also in accordance with the contract and customer's requirement completely.

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.

1.Timely response, 

Timely response to your inquiry, multiple choice recommendations based on your demand,quickly respond mails and provide solutions. 

2.Free sample of dry ramming mass

Sample and trial order are accepted for the quality evaluation

3.Strict quality control

Arrange production on time and control quality strictly. 

4.Shorter delivery time.

Book the earliest vessel or plane to guarantee the delivery time. 

5.Professional Services

Provide all the detailed news and pictures from order to delivery;offer relative export documents and original certificate if needed;warm and considerable after-sale service. 

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, other southeast Asian countries and regions.