Method for preparing indium phosphide polycrystal from indium phosphide tailings
A technology of indium phosphide and indium tailings, which is applied in the field of compound semiconductor materials, can solve the problems of increasing the cost of treating waste water and residue, waste of resources, and low recovery rate, so as to reduce the generation of rich indium, avoid waste, and low recovery rate Effect
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Embodiment 1
[0032] A method for preparing indium phosphide polycrystalline from indium phosphide tailings, the structural schematic diagram of the preparation device is as follows figure 1 As shown, it specifically includes the following steps:
[0033] Select a batch of non-doped indium phosphide tailings, polish them with 400-mesh sandpaper, soak them in a mixture of nitric acid, hydrofluoric acid, and deionized water (volume ratio 1:1:9) for 4 hours, and then put them into an ultrasonic device for Sonicate for 30 minutes, rinse with deionized water for 20 minutes, dehydrate with analytical pure ethanol, put in an oven, bake at 70°C for 3 hours, and set aside. Sampling was sent to detect the content of components and impurity elements, and the analysis results are shown in Table 1.
[0034] Weigh 4000g of non-doped indium phosphide tailings that have been washed and dried for use, crush them into 5-20mm particles with a zirconium hammer, put them in a clean quartz boat, and set aside. ...
Embodiment 2
[0042] A method for preparing indium phosphide polycrystalline from indium phosphide tailings, the structural schematic diagram of the preparation device is as follows figure 1 As shown, it specifically includes the following steps:
[0043] Select a batch of iron-doped indium phosphide tailings, polish them with 600-mesh sandpaper, soak them in a mixture of nitric acid, hydrofluoric acid, and deionized water (volume ratio 1:1:9) for 6 hours, and put them into an ultrasonic device for Sonicate for 40 minutes, then rinse with deionized water for 20 minutes, dehydrate with analytical pure ethanol, put in an oven, bake at 80°C for 4 hours, and set aside. Sampling was sent to detect the content of components and impurity elements, and the analysis results are shown in Table 1.
[0044] Weigh 4500g of iron-doped indium phosphide tailings that have been washed and dried for later use, crush them into 5-20mm particles with a zirconium hammer, and place them in a clean quartz boat fo...
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