High Alumina Brick - Ball Mill Lining Brick
- Ref Price:
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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.
- 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 is the difference between T3 refractory bricks and high alumina refractory bricks?
- The T3 in T3 refractory bricks refers to the model indicating that the refractory brick model is T-3, and that the corresponding T-3 model is 230*114*65 (mm)
- Q: What materials are used for roof insulation?
- There are two kinds: one is a kind of cotton insulation board, such as rock wool board, aluminum silicate cotton board, but this is not environmental protection, harmful to life, foam board (this fire safety factor minimum), these relatively cheap.
- Q: Aluminum content 38, silicon content 55 What refractory bricks?
- High alumina brick:The mineral composition of the high alumina brick is determined by the bauxite used. The mineral composition of the clinker is usually mullite, corundum and glass. The theoretical composition of mullite is Al2O371.8%, SiO2 28.2%, and its melting decomposition temperature is 1840 DEG C. With acicular crystal, network cross structure, high temperature state showed better strength. Corundum in the form of alpha -Al2O3, melting point of 2050 degrees, hardness of Mohs 9, showing a granular and columnar crystal, has good chemical stability, acid, alkaline slag have a certain resistance. Based on the composition of mullite minerals, the phase composition of high alumina brick can be judged according to the content of Al2O3. When the bricks are below Al2O3 71.8%, the base of the composition is mullite and SiO2, such as grade LZ-48 bricks. Because it contains a large number of SiO2 formed in the liquid phase under high temperature is 20% ~ 30%; brick in Al2O3 more than 71.8%, the excess Al2O3 formed corundum crystal under high temperature, while generating 2 high temperature phase, eutectic temperature rise by the low content of Al2O3 brick 1595 C to 1840 C, such as grade LZ-75 brick. In fact, it is impossible to produce a complete phase equilibrium in the process of production, but the glass phase is very small, and there is no more than 10% in the partial gap of the Yu Jing phase
- Q: Can high alumina brick resist carburizing?
- The resistance to carburization is not directly related to the bulk density of bricks
- Q: How much is one ton / ton of high alumina refractory brick?
- The price of high alumina refractory bricks is not equal, according to the quality index of GB2988-2012
- Q: What are the specifications for bricks?
- Thecompressive node as a new type of building energy-saving wall materials, which can be used for masonry walls, but also has good thermal properties, in line with the construction of the building module, reduce the loss in the process of construction, improve work efficiency; the hole rate reached more than 35%, can reduce the weight of the wall, save the foundation engineering cost. Compared with common sintered porous brick, it has the characteristics of heat preservation, heat insulation, light weight, high strength and high construction efficiency. The product is made of shale as raw material. It is produced by high vacuum extrusion molding machine and one yard firing process
- Q: How to distinguish the good or bad of the high aluminum brick?
- In the procurement of high alumina brick, the first color, high quality aluminum brick, brick surface smooth, yellow color pale, four sides equal, no broken angle, no cracks.
- Q: How are the grades of high alumina bricks differentiated?
- High alumina brick: aluminium silicate refractory product with a content of three Al2O3 (two) and more than 48%
- Q: Which thermal shock stability of clay brick and high alumina brick is good?
- High alumina brick is made of superfine alumina, fused corundum and fused mullite as main refractory materials.
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High Alumina Brick - Ball Mill Lining Brick
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 2000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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