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Beneficiation method for xenotime

A beneficiation method and xenotime technology, which are applied in chemical instruments and methods, magnetic separation, solid separation, etc., can solve the problems of difficulty in precise control of chemical dosage operation process and large environmental pollution, and achieve easy equipment and low environmental pollution. Effect

Inactive Publication Date: 2015-09-02
岳阳大力神电磁机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Flotation mostly uses hydroxamic acid as collector and sodium silicate and starch as inhibitors. Although it can achieve a good separation and enrichment effect, it is difficult to accurately control the amount of chemical addition and the operation process, and it is also harmful to environmental pollution. larger

Method used

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  • Beneficiation method for xenotime
  • Beneficiation method for xenotime
  • Beneficiation method for xenotime

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) Obtain raw ore pulp: crush xenotime raw ore to -10mm, and then grind in a wet ball mill with a grinding concentration of 60%, a grinding time of 17 minutes, and a grinding fineness of -200 mesh, accounting for 80 %, to obtain raw ore pulp.

[0055] (2) Send the above-mentioned raw ore pulp into a semi-counter-current drum magnetic separator for weak magnetic separation, and obtain crude pulp after removing mechanical iron. Among them, the magnetic induction intensity of the drum surface of the semi-counter-current drum magnetic separator is 2200 Oersted , the pulp concentration is 20%.

[0056] After calculation, Y in the above crude pulp 2 o 3 The grade is 9.75%. Y in crude pulp 2 o 3 The grade is the same as Y in xenotime raw ore before crushing 2 o 3 The grades are basically the same, because the weak magnetic separation removes the mechanical iron mixed in the crushing and grinding process.

[0057] (3) Send the above crude pulp to a pulsating vertical rin...

Embodiment 2

[0067] (1) Obtain raw ore pulp: crush xenotime raw ore to -10mm, and then grind in a wet ball mill with a grinding concentration of 60%, a grinding time of 17 minutes, and a grinding fineness of -200 mesh, accounting for 80 %, to obtain raw ore pulp.

[0068] (2) Send the above-mentioned raw ore pulp into a semi-counter-current drum magnetic separator for weak magnetic separation, and obtain crude pulp after removing mechanical iron. Among them, the magnetic induction intensity of the drum surface of the semi-counter-current drum magnetic separator is 2200 Oersted , the pulp concentration is 20%.

[0069] After calculation, Y in the above crude pulp 2 o 3 The grade is 9.98%. Y in crude pulp 2 o 3 The grade is the same as Y in xenotime raw ore before crushing 2 o 3 The grades are basically the same, because the weak magnetic separation removes the mechanical iron mixed in the crushing and grinding process.

[0070] (3) Send the above crude pulp into a pulsating vertical...

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Abstract

The invention provides a beneficiation method for xenotime. The beneficiation method comprises the following steps of obtaining original ore pulp; performing low-intensity magnetic separation on the original ore pulp, and removing mechanical iron to obtain rough ore pulp; performing strong magnetic separation on the rough ore pulp to obtain primary xenotime concentrate and primary xenotime tailing; performing primary scavenging on the primary xenotime tailing to obtain secondary xenotime concentrate and secondary xenotime tailing; performing secondary scavenging on the secondary xenotime tailing to obtain tertiary xenotime concentrate and tertiary xenotime tailing. Compared with gravity separation and electric separation, the beneficiation method for separating and enriching the xenotime by sequentially adopting low-intensity magnetic separation, strong magnetic separation, primary scavenging and secondary scavenging has the advantage that fine minerals can be better recovered; compared with the flotation mode, the beneficiation method has the characteristics that no medicament is needed to be added, equipment is easy to control, and the pollution to the environment is small.

Description

technical field [0001] The invention relates to the field of mineral processing, in particular to a mineral processing method of xenotime. Background technique [0002] Rare earth elements refer to the 15 elements from lanthanum with atomic number 57 to lutetium with atomic number 71, plus scandium and yttrium, a total of 17 elements. Representative minerals of rare earth elements are monazite, bastnaesite and xenotime. Minerals such as monazite and xenotime are produced in granite, granite pegmatite, and placer deposits, and they mostly exist in the form of heavy minerals that are not easily weathered. They are usually combined with heavy sand minerals such as ilmenite, zircon, garnet, and cassiterite. Symbiosis. [0003] Traditional xenotime beneficiation methods mainly include gravity separation, electric separation and flotation. Gravity separation and electric separation are still difficult to deal with fine-grained ore. Flotation mostly uses hydroxamic acid as coll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C1/02B03C1/005B03C1/025
Inventor 周少川周奇珍杨迪山李勇军肖伟万卫红
Owner 岳阳大力神电磁机械有限公司