A method and device for gas-phase magnesium purification based on elemental silicon filter material
A technology of elemental silicon and filter material, applied in the direction of improving process efficiency, can solve the problems of inability to remove certain or certain impurities, the overall purification effect is limited, and the efficiency of magnesium purification is low, so as to simplify production. Process flow, reduce nucleation energy barriers, and improve production efficiency
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Embodiment 1
[0070] like figure 2 Described, a device for gas phase magnesium purification containing elemental silicon filter material, comprising an electric furnace body 1, a crucible 2, a heating mechanism 3, a thermocouple 4 and a vacuum mechanism 5;
[0071] The crucible 2 includes a reaction zone 21, an impurity condensation zone 22 and a crystallization zone 23 which are arranged in sequence,
[0072] The reaction zone 21 is provided with a hopper 211,
[0073] The impurity condensation zone 22 is provided with a filter assembly 221,
[0074] The filter assembly 221 is provided with a filter material, the filter material is elemental silicon particles, and the particle size of the elemental silicon particles is 0.1-10 mm;
[0075] The crystallizing zone 23 is provided with a crystallizer 231;
[0076] The heating mechanism 3 is placed inside the electric furnace body 1 to heat the crucible 2;
[0077] The vacuum mechanism 5 includes a vacuum chamber 51, a water-cooled flange 52,...
Embodiment 2
[0080] like image 3 As shown, a device for gas-phase magnesium purification containing elemental silicon filter material includes an electric furnace body 1, a crucible 2, a heating mechanism 3, a thermocouple 4 and a vacuum mechanism 5;
[0081] The crucible 2 includes a reaction zone 21, an impurity condensation zone 22 and a crystallization zone 23 which are arranged in sequence,
[0082] The reaction zone 21 is provided with a hopper 211,
[0083] The impurity condensation zone 22 is provided with a filter assembly 221,
[0084] The filter assembly 221 is provided with a filter material, the filter material is elemental silicon particles, and the particle size of the elemental silicon particles is 5-10 mm;
[0085] The crystallizing zone 23 is provided with a crystallizer 231;
[0086] The heating mechanism 3 is placed inside the electric furnace body 1 to heat the crucible 2;
[0087] The heating mechanism 3 includes a first heating assembly 31, a second heating asse...
Embodiment 3
[0094] Utilize the device of embodiment 1 to realize the method for gas-phase magnesium purification based on elemental silicon filter material, comprising the following steps:
[0095] The industrial crude magnesium is placed in the hopper 211, the heating mechanism 3 is turned on, the temperature of the heating mechanism 3 is set to 1000 ° C, the raw material is reduced, the magnesium raw material is changed into magnesium vapor and then kept for 40 minutes, the vacuuming assembly 54 is turned on, and the crucible 2 is kept in the The vacuum degree is 20Pa. At this time, since the elemental silicon filter material is placed in the impurity condensation zone 22 in the crucible 2, the corresponding temperature range is 700-1000 ° C. After the reaction, the high-purity magnesium on the crystallizer 231 is collected.
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