product news/產品新聞
Combined Melting and Holding Furnace Yields Energy Savings 节约能源的组合式熔炼保温炉
A compact furnace developed by Nippon Crucible Co.,
Tokyo, Japan, combines the features of a tower melting furnace and crucible holding furnace for efficient continuous aluminum melting and holding. Te Mel-Keeper furnace offers energy savings and high melt yield through low-temperature melting (tapping temperature is between 600-640C. Te equipment consists mainly of a furnace body, com-
bustion system, combustion safety system, automatic tem- perature control system, charging system and movable tower. Aluminum ingots and returns are preheated in the tower and melted in a crucible. When the molten aluminum reaches a certain volume, it flows continuously out of the taphole into a connected holding crucible, where it is stored. Te continuous melting helps lower the temperature of the molten aluminum and contributes to the avoidance of oxides, slag and hydrogen gas. Indirect heating in the holding crucible also protects
from aluminum oxidation and reduces metal loss. Continu- ous degassing with nitrogen or argon gas and fluctuation of molten metal of less than +/-5C results in a hydrogen gas content of less than 0.16cc/100g.
日本东京的Nippon Crucible有限公司把塔式熔炼炉 和坩埚保温炉的特点结合起来，生产出可以进行高效连 续铝合金熔炼保温的紧凑型保温炉。坐落在美国康涅狄 格州沃林福德市的Morganite Crucible 有限公司，利 用Mel-Keeper炉不但降低了耗能，还可以通过较低温 度（出炉温度在600-640℃）融化高温熔体。 该设备主要由炉体、燃烧系统、燃烧安全系统、自动 温度控制系统、加料系统和移动塔构成。 铝锭和废料在塔内预热后放入坩埚内熔炼。当铝的熔 炼量达到设定值后，将铝液通过出液口注入到保温坩埚 中进行贮备。连续熔炼铝液有助于降低熔体温度，减少 熔体中的氧化物、熔渣和氢气。
保温坩埚的间接加热也避免了铝液的氧化和烧损。 在氮气和氩气的连续脱气作用下，熔体温度的波动小于 +/-5℃，氢气含量小于0.16cc/100g。
因为金属在炉内预热，废气的排放温度较低，有助于
The Mel-Keeper continuous aluminum melting and holding crucible furnace system can be used in diecasting, permanent mold and sand casting facilities.
Mel-Keeper连续熔炼保 温炉可以用于压铸、金属 型铸造和砂型铸造。
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FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION Fall 2011
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