High Alumina Brick - Ball Mill Lining Brick

High Alumina Brick - Ball Mill Lining Brick

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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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Quick Details

Place of Origin:	Shandong, China (Mainland)	Type:	Ceramic Plates	Application:	Industrial Ceramic
Material:	Alumina Ceramic	Model Number:	OK93	Brand Name:	CNBM
Specific Gravity g/cm3:	3.63~3.68	(Mohs Scale)Hardness:	9	Compression Strength MPa:	≥2000
Color:	White	Equivalent Wear Loss:	≤0.08‰	alumina content:	93%
Samples:	Free available	Usage:	Ball mill

Packaging & Delivery

Packaging Details:	box
Delivery Detail:	Within 7 Days

Technical Data

Name Items	OK70	OK80	OK90	OK93	OK95
Specific Gravity g/cm3	2.95~3.02	3.33~3.36	3.55~3.60	3.63~3.68	3.70~3.75
(Mohs Scale)Hardness	8.5	8.5	9	9	9
Compression Strength MPa	≥1700	≥1800	≥1850	≥2000	≥2250
Color	yellowish	White	White	White	White
Equivalent Wear Loss	≤0.18‰	≤0.14‰	≤0.10‰	≤0.08‰	≤0.05‰

Guidence for Using

Calculation of alumina liner installed in ball mill

1. The number of alumina liners installed on two end walls:

(1) Calculation of the number of straight liners on the end wall:

Gf=3.14×r2÷(L1×W)

In the above formula: Gf: the number of straight bricks on the end wall of ball mill

r: the semi-diameter of the end wall of ball mill

W: the width of lining bricks

L1: the length of lining bricks

(2) Calculation of number of semi-straight bricks on the end face:

GB=D÷W

In the above formula:

GB: the number of straight bricks on the end face.

D:the diameter of the end wall

W: the width of alumina liner

2. The calculation of number of liner on the round wall.

The total No. of liners:

GC=R1×R2 , R1=3.14×D÷W , R2=(L-2h)÷L1,

in the formula:

GC: The total number of straight bricks and trapezoidal bricks on the round wall.

R1: the rows of bricks on the round wall.

R2: number of bricks in each row

D: the diameter of the end face

h: the thickness of liner

L: the length of Ball mill

W: the width of alumina liner

L1: the length of liner

Remark: GC: calculation of the total number of straight bricks and trapezoidal bricks according to tonnage of Ball mill according to the following table. Respectively calculate the No. of straight liner GC1 and trapezoidal liner GC2according to the proportion in the table.

Mill Tunnage	<0.3t< span="">	0.5T	1--1.5T	2.5--3T	5--25T	30--40 T
Stri. Brick:Tra.Brick	0:1	1:10	1:1	2:1	3:1	5:1

3. The total No. alumina liner:

Straight Liner=2Gf+ GC1 Trapezoidal Liner = GC2

Semi-Straight Brick=2GB+ GB1 semi-trapezoidal Brick= GB2

Flake Brick= R2

1. The material of installation:

The installation for lining Ball mill adopts 425# silicate white cement and a little 107# glue asadhesive.

2. The installation:

Before installation, we should clean surface of Ball mill.

(1)Installation should begin from the side walls installed with straight bricks totally and then adopt a certain number of semi- straight bricks to install matched. The gap between lining bricks should be less than 1.5mm. The installation of side walls should use straight bricks and semi-straight bricks only.

(2)After installing two side walls, then install round walls, which should adopt straight bricks and trapezoidal bricks. Make sure the bottom of lining bricks to contact tightly to the round walls, meanwhile use semi-straight brick and semi-trapezoidal liner to match (see the photo mentioned).

Specific installation steps are as following: Please install straight bricks first, then install trapezoidal bricks, at the last line, if the straight bricks can’t be inserted, then install fake bricks, whose gap is sealed tightly by white cement. Please let the workers install flexibly according to specific size of ball mill.

3. Maintenance:

After installation finished, we should maintain according to the following steps:

Dry the ball mill naturally for two days and put pour full water into the ball mill for 3 days, then take the water out and naturally dry 7 days at least.
After drying 7 days, pour water(occupying 70% of volume of mill)into ball mill, then charge alumina ball(occupying 60% of ball mill) and move ball mill for grinding 3 hours. Then move the ball mill the second time for grinding 1.5 hour. After 3 to 4 days, the ball mill could be normally operated.
In winter, new installed ball mill should be heated for two days. On the first day, heat the ball mill by electronic stove for 24 hours, then move the mill and heat the other side for 24 hours. After that, maintain the ball mill as the steps of above mentioned.

High alumina brick lining brick for ball mill

Q: How much is the bending temperature aluminum silicon carbide brick for torpedo car: High alumina brick is made of superfine alumina, fused corundum and fused mullite as main refractory materials.

Q: What are the main components of high alumina bricks?: High alumina brick materials according to the main mineral phase can be divided into: aluminum silicate minerals, such as sillimanite, kyanite, andalusite, and synthetic mullite.

Q: What are the grades of high alumina bricks?: High alumina brick according to the aluminum content is generally divided into: super high alumina brick, a high aluminum brick, two high alumina brick, three high alumina brick

Q: What's the difference between high alumina refractory bricks and high alumina refractory bricks?: The chemical pH value of high alumina refractory brick belongs to neutral and alkaline refractory brick, and clay refractory brick belongs to neutral and acid refractory brick.

Q: What are the characteristics of high alumina bricks?: 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 high-temperature kilns and other energy consuming industries, such as chemical industry, electric power industry, etc.

Q: How much is one ton / ton of high alumina refractory brick?: The market price of about super high aluminium brick price at 3000 yuan / ton, a high aluminum brick at around 2500 yuan / ton, two high aluminum bricks at around 2100 yuan / ton three grade high alumina bricks at around 1850 yuan / ton for reference, choose to buy the area is not the same as the prices are not the same.

Q: What are the high temperature refractory mortars made of?: Siliceous mud, mineral composition and chemical composition is similar with silica, excellent corrosion resistance, water glass slurry, drying shrinkage, but also can be used for bonding fiber products, sealing furnace wall.

Q: Are there any differences between insulating bricks and refractory bricks?: The insulation performance of thermal conductivity of insulating brick in general 0.2-0.4 (average temperature 350 - 25 DEG C) w/m.k, and the thermal conductivity of refractory brick in 1 (the average temperature of 350 - 25 DEG C) above w/m.k, which can obtain the insulation performance of insulating brick than refractory brick insulation performance is much better.

Q: The difference between light high alumina brick and heavy aluminum brick: High aluminum brick is one of the ideal heat insulating material, with high strength, low thermal conductivity, good insulation performance, low price and other characteristics, has been widely used in ceramic tunnel kiln, roller kiln, shuttle kiln, kiln wall, it is also used in various heating furnace coking furnace of iron and steel industry and other thermal equipment heat treatment, lining material, and has broad market prospects.

Q: How does the physicochemical index change when the high alumina brick is used at high temperature?: If the range of softening temperature exceeds the load, the constants of other physical and chemical indexes will also increase or decrease.

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