Method for recovering sulfur, lead, zinc and silver from oxygen-rich direct leaching residues of zinc concentrate or lead and zinc mixed ores by virtue of ultrasonic wave intensification
A technology for mixing ore and zinc concentrate, applied in chemical instruments and methods, inorganic chemistry, sulfur compounds, etc., can solve problems such as handling difficulties, hidden dangers, and capital backlog environment, and achieve good safety, small losses, and raw material processing capacity. big effect
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Embodiment approach 1
[0030] Composition of sulfur slag (processed through 100 mesh sieve, dry basis): lead 1.22%, zinc 4.75%, indium 0.0029%, silver 0.0569%, sulfur 74.83%. Weigh 5.0000g of sulfur residue, 1.0000g of A# additive, 62.5ml (100g) of a mixture of tetrachlorethylene and toluene, heat in a water bath at 100°C for 30min, and filter immediately to obtain 3.2126g of residue. Depending on the sound intensity and reaction time, the quality of the sulfur product obtained is also different.
[0031] If during the heating reaction process, ultrasonic enhancement is used, the ultrasonic frequency is 20KHz, and the sound intensity is 2.0-50w / cm 2 Between, the reaction time is 8min, at this moment the extraction rate of sulfur sees the following table:
[0032]
[0033] If in the process of heating reaction, ultrasonic strengthening is used, the ultrasonic frequency is 100KHz, and the sound intensity is 2.0-50w / cm 2 Between, the reaction time is 12min, at this moment the extraction rate of su...
Embodiment approach 2
[0040] Composition of sulfur slag (processed through 100 mesh sieve, dry basis): lead 1.22%, zinc 4.75%, indium 0.0029%, silver 0.0569%, sulfur 74.83%. Weigh 10.0000 g of the processed sample sulfur residue, 125 ml of trichlorethylene, heat in a water bath at 100 ° C for 25 min, filter immediately to obtain 6.3962 g of residue, cool to 27.5 ° C, with the difference of ultrasonic frequency, sound intensity and reaction time, the obtained sulfur Product quality also varies.
[0041] If ultrasonic extraction is used during the heating reaction, the ultrasonic frequency is 30KHz, and the sound intensity is 2.0-50w / cm 2 Between, the reaction time is 9min, at this moment the extraction rate of sulfur sees the following table:
[0042]
[0043] If ultrasonic extraction is used during the heating reaction, the ultrasonic frequency is 120KHz, and the sound intensity is 2.0-50w / cm 2 Between, the reaction time is 11min, at this moment the extraction rate of sulfur sees the following...
Embodiment approach 3
[0050] Composition of sulfur slag (processed through 100 mesh sieve, dry basis): lead 1.22%, zinc 4.75%, indium 0.0029%, silver 0.0569%, sulfur 74.83%. Weigh 10.0000 grams of sulfur residue, 125ml (100 grams) of tetrachlorethylene, heat in a water bath at 100°C for 30 minutes, and filter immediately to obtain 6.3962 grams of residue. Cool down to 27.5°C. The obtained sulfur Product quality also varies.
[0051] If ultrasonic extraction is used during the heating reaction, the ultrasonic frequency is 40KHz, and the sound intensity is 2.0-50w / cm 2 Between, the reaction time is 8min, at this moment the extraction rate of sulfur sees the following table:
[0052]
[0053] If ultrasonic extraction is used during the heating reaction, the ultrasonic frequency is 130KHz, and the sound intensity is 2.0-50w / cm 2 Between, the reaction time is 12min, at this moment the extraction rate of sulfur sees the following table:
[0054]
[0055] If ultrasonic extraction is used during t...
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