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A beneficiation method for step-by-step classification and comprehensive recovery of valuable elements from primary vein platinum ore tailings

A beneficiation method and a technology for valuable elements, which are applied in the fields of platinum in primary vein platinum ore tailings, step-by-step classification and comprehensive recovery of valuable elements in primary vein platinum ore tailings, and comprehensive recovery of palladium and chromite. Solve the problems of increasing the difficulty of production management, chromite entry, and no impurity removal process, and achieve the effect of improving the utilization rate of tailings resources, simple process flow, and high technical indicators

Active Publication Date: 2021-08-27
INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no impurity removal process in this method, and the treatment of tailings with high chromite content will easily cause chromite to enter the platinum palladium concentrate with the foam, so that the chromium content of the final platinum palladium concentrate exceeds the standard; in addition, heating pretreatment will increase equipment Investment and increase the difficulty of production management

Method used

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  • A beneficiation method for step-by-step classification and comprehensive recovery of valuable elements from primary vein platinum ore tailings

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Effect test

Embodiment 1

[0043] This embodiment provides a beneficiation method for step-by-step classification and comprehensive recovery of valuable elements from primary vein platinum ore tailings.

[0044] The tailings of a platinum mine in a vein in China are selected. The valuable metal elements in the tailings are platinum, palladium and chromium, the content of platinum is 0.70g / t, the content of palladium is 0.44g / t, Cr 2 o 3 The content is 19.53%. The main metal oxide is chromite, which contains a small amount of magnetite. The gangue minerals are mainly talc, serpentine and quartz, followed by tremolite, copper pyroxene, diopside, brucite and other minerals. Tailings -0.074mm accounted for 74.56% (-0.043mm accounted for 51.83%).

[0045] Such as figure 1 , the primary vein platinum ore tailings samples were adopted After one roughing and one sweeping in the spiral chute, the yield was 15.64%. Cr 2 o 3 The product is 41.92%, and the recovery rate is 33.56% of spiral chrome concentrate...

Embodiment 2

[0047] This embodiment provides a beneficiation method for step-by-step classification and comprehensive recovery of valuable elements from primary vein platinum ore tailings.

[0048] The tailings of a platinum mine in South Africa are selected. The valuable metal elements in the tailings are platinum, palladium and chromium. The platinum content is 0.55g / t, the palladium content is 0.31g / t, and the Cr 2 o 3 The content is 22.55%. The main metal oxide is chromite, which contains a small amount of magnetite. The gangue minerals are mainly enstatite, serpentine and quartz, followed by tremolite, diopside, talc, brucite and other minerals. Tailings -0.074mm accounted for 50.45% (-0.043mm accounted for 41.07%).

[0049] Primary vein platinum ore tailings sample collection After one roughing and one sweeping in the spiral chute, the yield was 26.67%, Cr 2 o 3 The product is 42.32%, and the recovery rate is 50.06% of the spiral chrome concentrate and spiral tailings; the spir...

Embodiment 3

[0051] This embodiment provides a beneficiation method for step-by-step classification and comprehensive recovery of valuable elements from primary vein platinum ore tailings.

[0052] The tailings of a platinum mine in a vein in Russia are selected. The valuable metal elements in the tailings are platinum, palladium and chromium, the content of platinum is 0.60g / t, the content of palladium is 0.34g / t, Cr 2 o 3 The content is 18.56%. The main metal oxide is chromite, which contains a small amount of magnetite. The gangue minerals are mainly talc, serpentine and quartz, followed by tremolite, copper pyroxene, diopside, brucite and other minerals. Tailings -0.074mm accounted for 86.77% (-0.043mm accounted for 701.87%).

[0053] Primary vein platinum ore tailings sample collection After one roughing and one sweeping in the spiral chute, the yield was 4.54%. Cr 2 o 3 The product is 42.28%, and the recovery rate is 10.34% of spiral chromium concentrate and spiral tailings; th...

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Abstract

The invention relates to a beneficiation method for step-by-step classification and comprehensive recovery of valuable elements from primary vein platinum ore tailings. The method comprises the steps of spiral fast collection, strong magnetic shunting, chromite flotation, ore grinding and pulp adjustment, and platinum palladium flotation. The invention preferentially obtains coarse-grained high-quality chromite through spiral gravity separation to realize early and fast harvest; magnetic separation realizes the separation of weak magnetic minerals and platinum palladium minerals, which is convenient for subsequent sorting; weak magnetic minerals recover chromite, further improving Utilization of tailings resources; the platinum-palladium carrier minerals are fully dissociated through fine grinding, and the platinum-palladium minerals are effectively recovered by flotation; the grade of platinum + palladium in the finally obtained platinum-palladium concentrate is greater than 60g / t, and the enrichment ratio is greater than 60, impurity Cr 2 o 3 Content less than 3%; chromite Cr 2 o 3 The grade is greater than 41%, and the recovery rate is greater than 70%. The ore dressing method of the invention has simple technological process, high technical index, easy industrialization, and realizes comprehensive recovery of valuable elements in primary vein platinum tailings.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a mineral processing method for step-by-step classification and comprehensive recovery of valuable elements from primary vein platinum ore tailings, and is particularly suitable for the comprehensive recovery of platinum, palladium and chromite in primary vein platinum ore tailings. [0002] technical background [0003] Platinum group metal elements are called "rare and precious metals". So far, the proven resources of platinum group metal elements in my country are seriously lacking. With the continuous development of my country's economy, the demand for platinum group metal elements has increased significantly, but platinum group metal elements Resources are limited, and supply is far from meeting demand. Therefore, recovery of platinum group metals from tailings becomes more and more important. [0004] Vein platinum ore is the main production resource o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B9/00B03B1/00
CPCB03B9/00B03B1/00
Inventor 李强胡真邱显扬李汉文姚艳清王成行汪泰邹坚坚李沛伦杨凯志丘世澄时晗
Owner INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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