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Jinan Hydeb Thermal Tech Co., Ltd.
Tel:0086(0)531 8896 9230 Fax:0086 (0)531 8896 1739
Mobile:0086 18660151258 E-mail:info@hydeb.com
Website:① http://www.hydeb.com ② http://www.jnhaide.com
Office Address:Haixinchuangzhigu 1-1208, Gaoxin District of Ji’nan City, Shandong, China, 250101
Factory Address: No. 38, Dadujiacun Industrial Park, Yaoqiang Street Office, High-tech Zone, Jinan City, Shandong, China
Launder type in-line rotor degassing unit (LDU)
Launder type in-line rotor degassing unit (LDU)
• Easy to use, efficient, flexible, low-cost
Equipment Introduction
• The LDU has higher degassing efficiency because degassing rotors are mounted between the melting furnace and casting machine in the length direction of the launder and the degassing zone is partitioned into several parts for multilevel in-line degassing. The number of rotors depends on the flow rate of molten aluminum.
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Equipment Features
• The degassing efficiency is high, above 40%. Continuous degassing in multiple sub-zones increases the area and time of contact between bubbles and molten aluminum; seal design is adopted. During the whole casting process, there is an inert headspace maintained on the surface of molten aluminum to avoid the generation of more slags and prevent secondary pollution to improve the degassing efficiency.
• Low use cost and maintenance cost. The molten aluminum heating and heat preservation system is removed, reducing consumption; launders are adopted for degassing, reducing the residual amount of molten aluminum and the loss of metal; it’s easy to replace launders.
• Easy to install. Small size and low weight, space-saving; needless to install the required structure or foundation; installed in the joint positions of launders; a short period of time is required for on-site commissioning, saving production downtime.
• Convenient for alloy conversion. There is no heating device or deep box, so after the end of each casting, most of the degassed metal is made into products with the residual molten aluminum in the degassing launders cleared away, facilitating alloy conversion.
• Easy to use. No special starting procedure; a simple molten aluminum drainage device; convenient slag removal and simple working conditions.
• Especially suitable for semi-continuous casting lines for the production of cast rods and renewable aluminum ingots. This casting technology is featured by frequent replacement of alloys without a very high dehydrogenation level.
Main Performance Parameters
Items |
Parameters |
Maximum temperature of molten aluminum |
750℃ |
Launder surface temperature |
≤60℃ |
Launder lining life |
≥12 months |
Rotor speed |
100-600rpm |
Inert gases |
High-purity N2, high-purity Ar |
Degassing efficiency |
The content of hydrogen in molten aluminum can be reduced below 0.22ml/100g under the following conditions: ≤maximum flow rate, hydrogen content at the inlet≤0.30ml/100gAl, molten aluminum temperature at a range from 700 oC to 740 oC; degassing efficiency≥35% when hydrogen content at the inlet>0.30ml/100gAl. |
Power supply |
380V AC 50Hz,≤10KVA |
Specifications of the LDU
Items Specification Code |
LDU-2 |
LDU-3 |
LDU-4 |
LDU-5 |
LDU-6 |
LDU-7 |
LDU-8 |
Number of Rotors |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
Maximum Molten Aluminum Flow t/hr |
8 |
15 |
20 |
25 |
30 |
35 |
40 |
Maximum Gas Consumption L/min |
90 |
140 |
180 |
270 |
360 |
420 |
480 |