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A method for comprehensive recovery of molybdenum, lead, fluorine and rare earth in rare earth ore

A technology for rare earth ore and rare earth concentrate, which is applied in the fields of lead, comprehensive recovery of molybdenum, fluorine and rare earth, can solve the problems of recovery rate and grade to be improved, solve the problem of resource waste, improve economic benefits, and strengthen recovery rate and grade. Effect

Active Publication Date: 2021-03-16
INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that although the fluorite in the tailings has been recovered, the recovery rate and grade need to be improved, the process can still be improved, and the variety of products can still be increased.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment provides a method for comprehensively recovering molybdenum, lead, fluorine and rare earth from rare earth ore, the details are as follows.

[0042] A rare earth tailings REO grade 0.54%, molybdenum grade 0.12%, lead grade 0.46%, fluorite CaF 2The grade is 15.35%, and the main mineral composition is bastnaesite, allanite, chrysosite, rare earth-bearing titanite, molybdenite, white lead ore, fluorspar, calcite, sodium amphibole, quartz, dolomite, Feldspar etc. Add water glass with a modulus of 1.5 to the ore sample, and after strong stirring for 2 hours, use a hydrocyclone to deslime to remove -5μm ore slime; adjust the concentration of the ore sample after desliming to 30%. For ore feeding, add 50 grams of sodium hexametaphosphate or sodium carbonate and 10 grams of ammonium salicylhydroxamate in turn for flotation roughing to obtain roughing tailings and roughing concentrate; roughing tailings are subjected to two sweeping operations, The first sweepi...

Embodiment 2

[0044] This embodiment provides a method for comprehensively recovering molybdenum, lead, fluorine and rare earth from rare earth ore, the details are as follows.

[0045] A rare earth tailings REO grade 0.46%, molybdenum grade 0.18%, lead grade 0.54%, fluorite CaF 2 The grade is 13.21%, and the main mineral group is the same as that in Example 1. Water glass with a modulus of 2.0 was added to the ore sample, and after strong stirring for 2 hours, desliming was carried out with a hydrocyclone to remove -5μm ore slime; the concentration of the ore slurry after desliming was adjusted to 50%, and the concentration of the ore sample was adjusted to 50% per ton For ore feeding, 1000 grams of sodium carbonate and 100 grams of styrene phosphonic acid are added successively for flotation roughing to obtain roughing tailings and roughing concentrate; the roughing tailings are subjected to two scavenging operations, and the concentration of one scavenging is 45%, add 300 grams of styre...

Embodiment 3

[0047] This embodiment provides a method for comprehensively recovering molybdenum, lead, fluorine and rare earth from rare earth ore, the details are as follows.

[0048] A rare earth tailings REO grade 0.67%, molybdenum grade 0.19%, lead grade 0.53%, fluorite CaF 2 The grade is 17.53%, and the main mineral group is the same as that in Example 1. Water glass with a modulus of 2.0 was added to the ore sample, and after strong stirring for 2 hours, desliming was carried out with a hydrocyclone to remove -5 μm ore slime; To the ore meter, add 100 grams of sodium hexametaphosphate and 50 grams of C 5～9 Potassium hydroxamate is carried out flotation roughing to obtain roughing tailings and roughing concentrate; roughing tailings are carried out twice sweeping operation, once sweeping concentration is 44%, add 100 grams of C 5～9 Potassium hydroxamate, the second sweeping concentration is 35%, add 30 g C 5～9 Potassium hydroxamate, sweeping and beneficiation returns to the previou...

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Abstract

The invention relates to a method for comprehensively recovering molybdenum, lead, fluorine and rare earth in rare earth ore. The method comprises the following steps that after a mineral sample is subjected to mud removal, one time of roughing, two times of scavenging and multiple times of concentration are carried out, and obtained molybdenum-lead rare earth concentrate is subjected to strong magnetic separation and shaking table sorting to obtain rare earth concentrate and shaking table tailings; one time of roughing, one time of scavenging and nine times of concentration are conducted on the molybdenum-selected lead tailings to obtain flotation fluorite concentrate; and grading treatment is carried out to obtain two kinds of fluorite concentrate in different grades. The method is advanced in process, outstanding in index and high in economic benefit, and effective utilization of the rare earth tailings containing molybdenum, lead and fluorine co-associated components is achieved.

Description

technical field [0001] The invention relates to the technical field of ore dressing, and more specifically relates to a method for comprehensively recovering molybdenum, lead, fluorine and rare earth from rare earth ore. [0002] technical background [0003] According to relevant reports, my country's rare earth resources are not only rich, but also of many types, including Baiyun Obo mixed rare earth ore, Sichuan alkaline rock type bastnaesite rare earth ore, and southern weathering and leaching type rare earth ore. The development of high-tech industries has laid a solid foundation. However, due to the frequent occurrence of improper phenomena such as mining the rich and abandoning the poor in some rare earth mining enterprises, the mining and processing technology is backward, the mining recovery rate, ore dressing recovery rate and comprehensive utilization rate of resources are low, and the rare earth mines are rich in rare earth ores, fluorspar, barite, and natural reso...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00
CPCB03B7/00
Inventor 邱显扬胡真王成行邹坚坚汪泰杨凯志李汉文李强李沛伦姚艳清时晗丘世澄
Owner INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI