High Purity Aluminium Oxide Balls 10 Mm Grinding Media Ball Inert Alumina Ceramic Sphere
Production Introduction
Inert alumina ceramic ball has the characteristics of high strength, low water absorption, high chemical stability, high thermal stability, resistance to high temperature and high pressure. It can not only resist the corrosion from the acid, alkali, salt and other organic solvent, but also the temperature change in production process.
Inert alumina ceramic ball is widely used in petroleum, chemical, fertilizer, natural gas and environmental protection industries, as the supporting and covering material of catalyst in reactors. Its main role is to increase the distributing spot of gas or liquid, also support and protect the activated catalyst with low strength.
Characteristics
1. The main component is alumina (more than 92%), which can be used as the grinding material.
2. As the major products (more than 3.60g/cm3), it can greatly improve the grinding efficiency, reduce the grinding time, save energy, reduce costs; and increase the effective volume of the mill, thereby finally increasing the amount of grinding materials.
3. It’s the products of high hardness, low wear (less than 0.01%), and can greatly extend the service life of the grinding body.
4.Because of the high whiteness, the product will not be affected by the color of the grinding material.
| Model |
17%-19%Ordinary Ceramic Ball |
| Color |
Light gray |
| Shape |
Ball |
| Chemical composition |
|
Min. % |
Max. % |
Usual % |
| Al2O3 |
17 |
19 |
18 |
| SiO2 |
70 |
77 |
74.9 |
| Al2O3 + SiO2 |
90 |
94 |
93 |
| Fe2O3 |
/ |
1.0 |
0.9 |
| TiO2 |
/ |
0.5 |
0.46 |
| CaO |
/ |
0.5 |
0.42 |
| MgO |
/ |
0.5 |
0.38 |
| Na2O |
/ |
2 |
1.12 |
| K2O |
/ |
3.5 |
3.28 |
| Physical properties |
Leachable Iron (%) |
≤0.1 |
| Apparent Porosity by Weight (%) |
D≥10mm |
≤0.4 |
| D=6mm |
≤1.0 |
| D=3mm |
≤3.0 |
| Water absorption (wt.%) |
<0.5 |
| Acid resistance (%) |
>99.8 |
| Alkaline resistance (%) |
>85 |
| Bulk Density |
(g/cm3) |
1.35 |
| (lb/ft3) |
84 |
| Specific density |
(kg/m3) |
2300 |
| (lb/ft3) |
144 |
| Moh’s hardness (scale) |
>6.5 |
| Thermal conductivity (w/m2.k) |
0.9-1.0 |
| Specific heat (J/kg.℃) |
628-837 |
| Max. Operating Temperature |
(℃) |
1050 |
| (℉) |
1922 |
| Thermal expansion (%) (500℃) |
0.20 |
|
Thermal Shock Stability (times)
(500 ℃ then water cooling)
|
10 |
| Geometric properties |
Nominal Size |
(mm) |
3 |
6 |
10 |
13 |
16 |
19 |
25 |
38 |
50 |
| (inch) |
1/8 |
1/4 |
3/8 |
1/2 |
5/8 |
3/4 |
1 |
1.5 |
2 |
| Crush Strength Min. |
(lbs) |
77 |
176 |
234 |
572 |
726 |
1672 |
1870 |
2090 |
3476 |
| (kg) |
35 |
80 |
106 |
260 |
330 |
760 |
850 |
950 |
1580 |
| (N/PC) |
343 |
784 |
1039 |
2548 |
3234 |
7448 |
8330 |
9310 |
15484 |
Inert 92% alumina ceramic balls application:
Inert alumina balls are widely used as the covering or supporting media of the catalyst in the reactors and tower packing in many fields such as petroleum, chemical industry, chemical fertilizer, natural gas and environmental protection etc. The main role is to buffer the impact of liquid and gas to the catalyst in the reactor, protect the catalyst and improve the distribution of liquid and gas in the reactor.
Packing and delivery:
Packing of Insulating brick: Standard export wooden pallet with cardboard.
Shipping of Insulating brick: By vessel or by train from any Chinese port,
Samples can be delivered by International express.
FAQ
Q1 : How can you control your quality?
A1: Donghua company will conduct reburning test and chemical analysis test on the products after the completion of the products.
Q2: What is your lead time?
A2: If you are buying a finished product, Donghua guarantees to ship within one week; if it is a customized product, it will take about 15-20 days.
Q3: What is your payments terms?
A3: We can accept 30% deposit, 70% balance to be against the BL copy or by LC, or other payment terms.
Q4: Can we visit your company?
A4: We warmly welcome your arrival.
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