High Alumina Brick - High Alumina Refractory Brick Made in China

Ref Price:

Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 1 m.t.

Supply Capability:: 111 m.t./month

Inquire Now

Add to My Favorites

OKorder Service Pledge

Quality Product, Order Online Tracking, Timely Delivery

OKorder Financial Service

Credit Rating, Credit Services, Credit Purchasing

Specifications

1high alumina refractory brick
2More than 20 years experience manufacture
3ISO9000&CE
4Clients:Alcoa,RioTintoGroup,RUSAL

high alumina refractory brick made in China

High strength

Low thermal expansion coefficient

Good thermal conductivity and thermal shock resistance

Good resistance to liquid aluminum erosion capability

High erosion

2. Applications of high alumina refractory brick

Widely used in large aluminum electrolytic cell of lining material. In the electrolytic aluminium industry, because of nitride bonded silicon carbide products can be made thin wall lining, enlarge the tank capacity, improve the thermal conductivity, can rapid cooling, and they are permitted to enter a higher power, increase the tank production capacity, at the same time, in its surface can form alumina and cryolite of eutectic content, in order to protect the tank lining work layer, prolong service life, therefore, this product is aluminum industry generally welcome.

3. Physical and Chemical Index of high alumina refractory brick

ITEM			INDEX
SiC %			72 Min
Si3N4 %			21 Min
Fe2O3 %			0.5 Max
Porosity %			18 Max
Bulk density g/cm3			2.65-2.70
Bending strength MPa	Room temperature °C		42
	1400 °C		45
CCS MPa			150 Min
Thermal conductivity w/m·k 1250 °C			15-18
Tolerance		0-100 mm	±1.0
		101-300 mm	±1.5
		301-500 mm	±2.0
		More than 500 mm	±0.5%
		Surface irregularity	0.2 Max
		Face verticality	0.5 Max
		Diagonal difference	2 Max

4. Production process of high alumina refractory brick

a.) Choose metal silicon as raw material, add additives, then mix.

b.) Put the mixture into the mold, then make embryoid by machine pressing.

c.) Be reaction sintered by nitrogen protection in electric furnace.

5. Packing details of high alumina refractory brick

a.) The products are packed in wooden cases, and the wooden cases are tied up by 6 steel belts, then the wooden cases are put on fumigation wooden pallet.

b.) We also pack products as custom request.

Q: What is fireproof concrete?: Silicate fireproof heat-resistant concrete using temperature can reach 700 DEG ~800 DEG, the main mechanism of its heat is dehydrated calcium hydroxide silicate hydrates series of cement clinker under high temperature, the calcium oxide and slag and mixing activated silica material in the three and two aluminum oxide and the reaction of anhydrous calcium silicate and anhydrous aluminum acid calcium has strong heat resistance, the fire resistance of concrete is a certain. Such as the use of high alumina bauxite and broken bricks, magnesia brick and magnesia for fireproof heat-resistant concrete materials with the highest using temperature can reach 1100 DEG C.

Q: How much is one ton of high alumina refractory brick?: Three high aluminum refractory brick Zhengzhou Kuwait is generally around 800. 32 years of experience, good.

Q: What's the difference between a well type annealing furnace and a box type annealing furnace?: 1. The shell of the furnace is welded by section steel and steel plate. 2, the furnace cover support adopts steel and guide rail combination mobile type. 3. The heating element is made of high resistance alloy 0Cr25Al5 produced by Beijing Shougang Group and arranged on the furnace side. 4, because the bottom bearing adopts high aluminum bricks, the circle center of the furnace set small, inside and outside heating. 5 、 furnace cover adopts hydraulic lifting, motor control, automatic walking. 6 、 temperature control system adopts PID SCR control, high accuracy.

Q: What is the price of the first grade high alumina brick?: The specifications and different prices, relatively large fluctuations of the main push of the refractory Dongxin high alumina brick high alumina brick prices generally around 3000 have various levels of Dongxin refractories

Q: Aluminum content 38, silicon content 55 What refractory bricks?: Semisilica brick: the content of Al2O3 is 15% ~ 30% of aluminium silicate refractory products. Manufacturing products are semi silica quartz containing impurities or native clay kaolin, refractory clay or kaolin beneficiation tailings and the pyrophyllite

Q: What is the content of free silica in the refractory bricks of high alumina bricks?: Refractory powders are not rich in free silica in varying degrees

Q: Which is faster for heat transfer between corundum bricks and high alumina bricks?: 75 high aluminum and 43 clay bricks, 75 single weight 4.5kg or more. 43 3.65kg or so, the use of temperature 75, high aluminum in about 1520, 43 of brick 1430 or so, the color of 75 pan white, 43 of the Loess color. In short, the difference is great.

Q: What is the apparent porosity of high alumina brick?: In the production of high alumina bricks in addition to the entity, there are many different sizes and shapes of different pores, pores can be divided into three categories: one side closed the other side and the outside world is called open pores, closed in the product not communicated with the outside is called closed pores, penetrating through pores called the few products.

Q: What is the difference between fireclay bricks and high alumina refractory bricks?: High R.U.L, low creep high alumina brick [1] is using high grade bauxite, fused corundum, fused mullite as main raw material of high-grade refractory materials. The product has the advantages of high temperature, little creep, strong corrosion resistance and good thermal shock resistance, and is suitable for large and medium-sized hot blast stoves.

Q: What are the categories of bricks?: Clay brick materials, cheap, durable, and fire prevention, heat insulation, sound insulation, moisture absorption and other advantages, is widely used in civil engineering. Waste brick can also be used as aggregate of concrete. In order to improve the shortcomings of ordinary clay bricks, such as small, self important and waste of soil, they are developing in the direction of light weight, high strength, hollow and big blocks.

Send your message to us

*Email

*TEL

*Quantity

*Unit