A method for intensive recovery of valuable components from rare earth tailings
A technology for rare earth tailings and tailings, applied in chemical instruments and methods, solid separation, wet separation, etc., can solve problems such as the inability to achieve effective comprehensive recovery of rare earth, lead, molybdenum and barium
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Embodiment 1
[0033] This embodiment provides a method for intensively recovering valuable components from rare earth tailings, and the specific process is as follows.
[0034] Rare earth tailings from a certain place in China are selected, and the main mineral composition is bastnaesite, barite, fluorite, etc. The raw ore (rare earth tailings) has a molybdenum grade of 0.13%, a barite grade of 23.71%, and a lead grade of 0.69%. The ore is ground to -1.0mm and subjected to weak magnetic separation under a background magnetic field strength of 0.1T to obtain magnetite and weak magnetic Tailings of weak magnetic separation, high gradient wet magnetic separation of tailings of weak magnetic separation under the background magnetic field strength of 1.0T, to obtain high-strength magnetic separation concentrate and strong magnetic separation tailings, adjust the liquid-solid ratio of strong magnetic separation concentrate to 5:1, press For each ton of ore feed, add 90 grams of sodium hydroxide a...
Embodiment 2
[0036] This embodiment provides a method for intensively recovering valuable components from rare earth tailings, and the specific process is as follows.
[0037]Rare earth tailings from a certain place in China are selected, and the main mineral composition is bastnaesite, barite, fluorite, etc. Raw ore (rare earth tailings) molybdenum grade 0.15%, barite grade 24.2%, lead grade 0.71%, ore grinding to -1.0mm, under the background magnetic field strength of 0.15T weak magnetic separation, magnetite and weak magnetic Tailings, weak magnetic separation tailings in high gradient wet magnetic separation under the background magnetic field strength of 1.2T, to obtain strong magnetic separation concentrate and strong magnetic separation tailings, adjust the liquid-solid ratio of strong magnetic separation concentrate to 3:1, press For each ton of ore feed, add 100 grams of sodium sulfide as the leaching agent, control the temperature at 85°C, and leaching for 2 hours, then wash and ...
Embodiment 3
[0039] This embodiment provides a method for intensive recovery of valuable components in rare earth tailings, the specific process is as follows
[0040] Rare earth tailings from a certain place in China are selected, and the main mineral composition is bastnaesite, barite, fluorite, etc. The raw ore (rare earth tailings) has a molybdenum grade of 0.12%, a barite grade of 22.6%, and a lead grade of 0.65%. The ore is ground to -1.0mm and subjected to weak magnetic separation under a background magnetic field strength of 0.2T to obtain magnetite and weak magnetic Tailings, weak magnetic separation tailings in high gradient wet magnetic separation under the background magnetic field strength of 1.4T, to obtain strong magnetic separation concentrate and strong magnetic separation tailings, adjust the liquid-solid ratio of strong magnetic separation concentrate to 4:1, press For each ton of ore feed, add 120 grams of sodium hydroxide with a weight ratio of 1:1: sodium sulfide as a...
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