A kind of control method of ultra-high-purity aluminum purification and crystallization device
A control method and crystallization technology, which is applied in the field of metal aluminum purification device control, can solve the problems of low product purity, easy generation of oxides, and low purification efficiency, so as to achieve stable liquid level, reduce the generation of oxides, reduce The effect of contact
Active Publication Date: 2020-05-22
宁波锦越新材料有限公司
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Problems solved by technology
[0008] The present invention designs a control method for a crystallization device of ultra-high-purity aluminum, which solves the technical problem that the existing crystallization device cannot keep the aluminum liquid level from being driven while maintaining high-speed rotation, resulting in the aluminum liquid and In contact with air, it is easy to produce oxides, the product purity is not high, and the purification efficiency is low
Method used
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Embodiment
[0034] Embodiment: Take the purification of 5N aluminum to 5N5 as an example.
[0035] Step 1: Melting a certain amount of 5N aluminum block in a crucible, keeping the temperature at 660-680°C.
[0036] Step 2. Install the purification and crystallization device above the crucible. At this time, the upper rotor 9 and the lower rotor 10 are inserted under the liquid aluminum surface, and the upper rotor 9 is located below the aluminum liquid surface.
[0037] Step 3: 50-100 L / min of normal-temperature air is continuously fed into the crystallization device.
[0038] Step 4: Turn on the rotating motor 3 to continuously rotate the lower rotor 10, control the steering motor 6, so that the upper rotor 9 and the lower rotor 10 rotate in opposite directions, increase the speed to about 80rpm and keep the liquid level from being driven, and rotate During the process, the aluminum liquid with high purity is preferentially solidified due to the cooling action of the crystallization dev...
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The invention relates to a control method of a purification and crystallization device for ultra-high-purity aluminum, comprising the following steps: installing the purification and crystallization device on the top of a crucible with the lower end deep under the liquid level of aluminum liquid, and continuously feeding normal temperature into the purification and crystallization device Air; control the rotating motor so that the first transmission wheel and the first transmission gear rotate, the first transmission wheel drives the second transmission wheel to rotate; the first transmission gear drives the second transmission gear to rotate in the opposite direction; the second transmission gear drives the inner The rotating shaft and the lower rotating body rotate, and during the rotation process, high-purity aluminum liquid accumulates around the lower rotating body to form crystals; the steering motor is controlled so that the linkage plate moves down and forms an integral part with the second transmission wheel, driving the outer rotating shaft to rotate, Thereby, the upper rotating body and the lower rotating body are driven to rotate in opposite directions, and the upper rotating body and the lower rotating body rotate in reverse so that the aluminum liquid level remains undriven. The process of the invention is simpler and more efficient, pays more attention to actual effect, and is more suitable for industrialized production.
Description
technical field [0001] The invention relates to a control method of a metal aluminum purification device, in particular to a control method of an ultra-high-purity aluminum purification and crystallization device. Background technique [0002] Aluminum products with a purity above 5N5 are called ultra-high-purity aluminum. Ultra-high-purity aluminum is widely used in the fields of electronics, aviation, navigation, chemical industry and defense industry, and its consumption is increasing year by year. But now there are very few domestic enterprises that can produce 5N5 ultra-high-purity aluminum that meet the needs of users, and there are only a handful of research and development units. Therefore, almost all ultra-high-purity aluminum needed in China depends on imports. [0003] Although some domestic companies are already in trial production, there is a big gap with similar foreign companies and they cannot meet domestic demand. Therefore, research and development of new ...
Claims
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IPC IPC(8): C22B21/06
CPCC22B21/06
Inventor 张瑾大岩一彦姚科科广田二郎周建波叶翔
Owner 宁波锦越新材料有限公司