Beneficiation method for step-by-step classified comprehensive recovery of valuable elements from primary vein platinum ore tailings

A technology of valuable elements and beneficiation method, which is applied in the comprehensive recovery of chromite, the beneficiation of primary vein platinum ore tailings for comprehensive recovery of valuable elements, and the platinum and palladium fields in primary vein platinum ore tailings. Solve the problems of excessive chromium content in platinum and palladium concentrates, increase the difficulty of production management, and have no impurity removal process, so as to facilitate subsequent sorting, improve the utilization rate of tailings resources, and achieve early harvest and fast harvest.

Active Publication Date: 2020-08-04
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

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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  • Beneficiation method for step-by-step classified comprehensive recovery of valuable elements from primary vein platinum ore tailings

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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 classified comprehensive recovery of valuable elements from primary vein platinum ore tailings. The method comprises the steps of spiral quick recovery, strong magnetic flow dividing, chromite flotation, ore grinding and pulp mixing and platinum-palladium flotation. According to the beneficiation method, coarse-grain high-quality chromite is preferentially obtained through spiral reselection, and early recovery and quick recovery are achieved; weak magnetic minerals and platinum-palladium minerals are divided for respective queuing through magnetic separation, so that subsequent separation is facilitated; chromite is recovered from weak magnetic minerals, and the tailing resource utilization rate is further increased; platinum-palladium carrier minerals are fully dissociated through fine grinding, and the platinum-palladium minerals are effectively recovered through flotation; in finally obtained platinum-palladium concentrate, the grade of platinum and palladium is larger than 60 g/t, the enrichment ratio is larger than 60, and the content of impurity Cr2O3 is smaller than 3%; the chromite Cr2O3 grade is larger than41%, and the recovery rate is larger than 70%; and the beneficiation method is simple in technological process, high in technical index and easy to industrialize, and achieves comprehensive recovery of the valuable elements in the 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 Applications(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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