Ore dressing technology for comprehensively recovering lean and fine wiikite

A technology of miscellaneous niobium ore and process is applied in the field of beneficiation process for comprehensive recovery of lean and fine miscellaneous niobium ore, which can solve the problem of single recovery, and achieve the effect of improving grade and recovery rate and improving recovery rate.

Inactive Publication Date: 2012-12-26
镇康县金宏矿业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional beneficiation process mostly recovers relatively simple and easy-to-select niobium ores. How to effectively recover these difficult-to-select niobium ores and recover the useful minerals is a big problem.
At present, there is no independent niobium mine in my country, so it is extremely important to comprehensively recover niobium ore and useful minerals in niobium ore

Method used

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  • Ore dressing technology for comprehensively recovering lean and fine wiikite
  • Ore dressing technology for comprehensively recovering lean and fine wiikite
  • Ore dressing technology for comprehensively recovering lean and fine wiikite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Table 1-1: Multi-element analysis results of a niobium-zirconium polymetallic ore A

[0023] the element

Ta 2 o 5

Nb 2 o 5

ZrO 2

mn

Au(g / t)

Th

Content (wt%)

0.0035

0.065

0.334

0.44

0.08

0.009

the element

TiO 2

sn

P

S

A1 2 o 3

U

Content (wt%)

0.33

0.034

0.01

0.43

14.46

0.004

the element

K 2 o

Na 2 o

SiO 2

CaO

MgO

Content (wt%)

3.69

0.26

68.41

0.018

0.99

[0024] The valuable elements that can be recovered in a niobium-zirconium polymetallic ore A mainly include niobium, zirconium, and tin. The grades of niobium and tin are low, and the zirconium content is at the cut-off grade. Phase analysis shows that this niobium-zirconium polymetallic raw ore A contains niobite, ferrotitanium-niobium-yttrium ore, uranium-lead pyroch...

Embodiment 2

[0035] Table 2: Multi-element analysis results of a niobium-zirconium polymetallic ore B

[0036] the element

Nb 2 o 5

ZrO 2

SnO 2

Content (%)

0.105

0.654

0.041

[0037] The recoverable valuable elements in a niobium-zirconium polymetallic ore B mainly include niobium, zirconium, and tin. The chemical analysis results are shown in Table 2. Such as figure 1 Shown, by the process of the present invention, niobium-zirconium polymetallic raw ore B (hereinafter referred to as raw ore) is beneficiated according to the following steps:

[0038] 1) After crushing the raw ore, carry out a stage of ore grinding, so that the particle size is -0.074mm, which accounts for 72%-78%, and water is added to form an ore slurry with a concentration of 30% by weight;

[0039] 2) The ore pulp is subjected to strong magnetic roughing in a vertical ring high gradient magnetic separator with a magnetic field strength of 8000 Oersted to obt...

Embodiment 3

[0043] Table 3: C multi-element analysis results of a niobium-zirconium polymetallic ore

[0044] Yuan Suo

Nb 2 o 5

ZrO 2

SnO 2

Content (%)

0.038

0.224

0.019

[0045] The recoverable valuable elements in a niobium-zirconium polymetallic ore C mainly include niobium, zirconium, and tin. The chemical analysis results are shown in Table 3.

[0046] Such as figure 1 Shown, by the process of the present invention, niobium-zirconium polymetallic raw ore C (hereinafter referred to as raw ore) is ore-dressed according to the following steps:

[0047] 1) After the raw ore is crushed, carry out a stage of ore grinding, so that the particle size is -0.074mm, which accounts for 72-78%, and water is added to form an ore slurry with a concentration of 35% by weight;

[0048] 2) The ore pulp is subjected to strong magnetic roughing in a vertical ring high gradient magnetic separator with a magnetic field strength of 9000 Oersted ...

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PUM

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Abstract

The invention relates to an ore dressing technology for comprehensively recovering lean and fine wiikite, which comprises the following steps of: 1) carrying out primary-stage ore grinding after raw ore is broken, and preparing into ore pulp; 2) carrying out strong-magnet rough dressing on the ore pulp in a vertical-ring high-gradient magnetic separator to obtain first strong-magnet concentrate and first strong-magnet tailing, and carrying out strong-magnet re-dressing on the first strong-magnet tailing in the vertical-ring high-gradient magnetic separator to obtain second strong-magnet concentrate and second strong-magnet tailing; 3) combining the first strong-magnet concentrate and the second strong-magnet concentrate to obtain strong-magnet rough concentrate, and respectively carrying out the following operation modes: A) carrying out secondary-stage ore grinding on the strong-magnet rough concentrate, and carrying out tabling to obtain niobium rough concentrate and first tailing; and B) firstly carrying out spiral sluice ore dressing on the second strong-magnet tailing, then carrying out tabling to obtain zirconium concentrate and (or) tin concentrate, zirconium middling and second tailing. The ore dressing technology disclosed by the invention has the advantage that the aim of effectively and comprehensively recovering niobium ores associated with ore impurities, low grade and fine granularity can be realized.

Description

technical field [0001] The invention relates to the technical field of ore dressing, in particular to a beneficiation process for comprehensively recovering poor fine miscellaneous niobium ore. Background technique [0002] Because niobium has excellent electrical conductivity, thermal conductivity, corrosion resistance, good ductility, high melting point, good chemical stability and some other special properties, it is widely used in metallurgy, electronics, chemical industry, aerospace and other industries. Niobium also absorbs gases, acts as a degasser, and is a good superconductor. Niobium mainly depends on imports in my country. As an important strategic resource in my country, niobium has been listed as "encouraged mining resources". [0003] There are very few niobium ores that are easy to be selected. With the development and utilization of human beings, the particle size of niobium ore is getting finer and lower, and the grade is getting lower and lower, and the as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00
Inventor 肖坤明谢文清郑新烟陈金武黎志权刘胜卿
Owner 镇康县金宏矿业有限公司
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