Device and method for recovery, separation and purification of aluminum-tin alloy through vacuum continuous crystallization
A technology for crystallization separation and recycling of aluminum, applied in the direction of improving process efficiency, can solve the problems of easy oxidation of aluminum, inability to handle aluminum-tin alloy, insufficient temperature range of crystallizer, etc., and achieves low cost, high universality of raw materials, and easy operation handy effect
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[0035] Example 1
[0036] An equipment for vacuum continuous crystallization, separation, purification, and recovery of aluminum-tin alloys, including a shell, a vacuum pump, a U-shaped crystallization tank, a melting pot, a melt pot, and a crystal pot. The vacuum pump is connected to the inner cavity of the shell. The shell is a vacuum-sealed structure. The vacuum pump draws a vacuum to realize the vacuum environment of the inner cavity. U-shaped crystallization tank, melting pot, melt pot, and crystal pot are all set in the inner cavity of the shell. The U-shaped crystallization tank is arranged obliquely. The high end is the groove head and the low end is the groove tail. The inclination angle of the U-shaped crystal tank 2°-7°, the crystal pot is connected to the tank head, and the melt pot is connected to the tank tail. There are several heating elements at the bottom of the U-shaped crystal tank, and the temperature of the tank head is higher than that of the tank tail. Th...
Example Embodiment
[0039] Example 2
[0040] This embodiment is an application of the foregoing embodiment 1. A method for vacuum continuous crystallization, separation, purification, and recovery of aluminum-tin alloy includes:
[0041] Step 1. Turn on the vacuum pump and the circulating water machine, and firstly heat up 500g of aluminum-tin alloy (wherein the mass fraction of tin is 20%) to 650°C under vacuum conditions (vacuum degree is 500 Pa) to fully melt.
[0042] Step 2. The completely melted aluminum-tin alloy melt flows into the U-shaped crystallization tank through the chute. The temperature range is 228℃-660℃, and the U-shaped crystallization tank has an inclination angle of 3°. Continuous crystallization separation is carried out under the drive of a screw ( The screw speed is 20r / min). The molten metal flowing into the U-shaped crystallization tank flows to the low-temperature zone to crystallize due to gravity, and the crystals are remelted to the high-temperature zone through the spira...
Example Embodiment
[0044] Example 3
[0045] This embodiment is an application of the foregoing embodiment 1. A method for vacuum continuous crystallization, separation, purification, and recovery of aluminum-tin alloy includes:
[0046] Step 1. Turn on the vacuum pump and circulating water machine. First, 500 g of aluminum-tin alloy (wherein the mass fraction of tin is 30%) is heated to 630° C. under vacuum conditions (vacuum degree is 500 Pa) to fully melt.
[0047] Step 2. The completely melted aluminum-tin alloy melt flows into the U-shaped crystallization tank through the chute. The temperature range is 228℃-660℃, and the U-shaped crystallization tank has an inclination angle of 3°. Continuous crystallization separation is carried out under the drive of a screw ( The screw rotation speed is 10r / min), the molten metal flowing into the U-shaped crystallization tank flows to the low temperature zone to crystallize due to gravity, and the crystals are remelted to the high temperature zone through the...
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