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Process for discarding tailings in mechanical beneficiation of absorption-state vanadium ores

An adsorption state, ore technology, applied in flotation, solid separation, wet separation, etc., can solve the problems of poor flotation effect, small difference in floatability, etc., to achieve small footprint, low production cost, Good selection effect

Active Publication Date: 2010-01-06
西安西北有色地质研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In general vanadium ores, the minerals are mainly non-metallic minerals, and silicate minerals are dominant. When flotation is used, the difference in their floatability is small, and most of the minerals with high vanadium content are clay minerals. They have a large amount of primary and secondary slimes produced by grinding, which makes the flotation effect not good, but if the disturbing slime is removed in advance through a spiral concentrator or a spiral chute, the flotation effect will be significantly improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] V in raw ore 2 o 5 The content is 0.93% by mass percentage. The specific steps of the tail throwing process in advance are as follows:

[0018] 1. Crushing: Crushing the adsorbed vanadium ore to -2mm.

[0019] 2. Grinding: The -2mm adsorbed vanadium ore is wet-type rod milled to -200 mesh 65% fineness slurry.

[0020] 3. Re-election by spiral concentrator: Sorting -200 mesh 65% fineness pulp on the spiral concentrator, after a rough separation, medium ore and another separation, light minerals and fine-grained minerals are collected as spiral concentrates, the Concentrate yield 25.95%, V 2 o 5 The mass content is 1.79%, the recovery rate is 50.14%, and the heavy minerals and coarse grains are collected as spiral tailings.

[0021] 4. Flotation: Spiral tailings enter the flotation cell as flotation raw ore for flotation operation, with 5mol / L H 2 SO 4 As a pH regulator, adjust the pH to 4-6, dodecylamine hydrochloride as a collector, the dosage is 500g / t flotatio...

Embodiment 2

[0023] V in raw ore 2 o 5 The content is 0.96% by mass percentage. The specific steps of the tail throwing process in advance are as follows:

[0024] 1. Crushing: Crushing the adsorbed vanadium ore to -2mm.

[0025] 2. Grinding: The -2mm adsorbed vanadium ore is wet-type rod milled to -200 mesh 50% fineness slurry.

[0026] 3. Spiral chute re-election: Sorting -200 mesh 50% fineness ore pulp on the spiral chute, after a rough separation, medium ore is re-selected again, and the light minerals and fine-grained minerals are collected as spiral concentrates. Mineral rate 39.64%, V 2 o 5 The mass content is 1.69%, the recovery rate is 69.95%, and the heavy minerals and coarse grains are collected as spiral tailings.

[0027] 4. Flotation: Spiral tailings enter the flotation cell as flotation raw ore for flotation operation, with 1mol / L H 2 SO 4 As a pH regulator, adjust the pH to 4-6, dodecylamine hydrochloride as a collector, the dosage is 134g / t flotation raw ore, isooc...

Embodiment 3

[0029] V in raw ore 2 o 5 The content is 1.85% by mass percentage. The specific steps of the tail throwing process in advance are as follows:

[0030] 1. Crushing: Crushing the adsorbed vanadium ore to -2mm.

[0031] 2. Grinding: The -2mm adsorbed vanadium ore is wet-type rod milled to -200 mesh 75% fineness slurry.

[0032] 3. Re-election by spiral concentrator: Sorting the -200 mesh 75% fineness pulp on the spiral concentrator. After a rough separation, medium ore is re-selected again. Light minerals and fine-grained minerals are collected as spiral concentrates. Concentrate yield is 49.90%, V 2 o 5 The mass content is 3.01%, the recovery rate is 80.15%, and the heavy minerals and coarse grains are collected as spiral tailings.

[0033] 4. Flotation: Spiral tailings enter the flotation cell as flotation raw ore for flotation operation, with 10mol / L H 2 SO 4 As a pH regulator, adjust the pH to 4-6, dodecylamine hydrochloride as a collector, the dosage is 100g / t flotat...

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Abstract

The invention provides a process for discarding tailings in the mechanical beneficiation of absorption-state vanadium ores. The process comprises the following steps: crushing and grinding the absorption-state vanadium ores to negative 200 meshes; beneficiating on a spiral concentrator or a spiral chute; collecting fine-fraction minerals and light minerals as spiral concentrate; and carrying out floatation operation on heavy minerals and coarse-fraction minerals by using H2SO4 as the pH regulator to regulate the pH value to 4 to 6, using dodecyl amine-hydrochloride as the collector with the amount of 100 to 500g / t, and using isooctanol as the frother with the amount of 5 to 50g / t to carry out the flotation from section one to section ten, wherein, the floating foam part and the spiral concentrate are merged to constitute the main concentrate; and the part in the chute constitutes the main tailings to be discarded. The invention has the advantages that the process is direct and efficient, and the cost is low, the range of beneficiation is wide, the adaptability to ores with various properties is high, the tailings can be pre-discarded before chemical vanadium extraction so as to increase the content of V2O5 of the materials of the chemical vanadium extraction, and the production cost can be obviously reduced.

Description

technical field [0001] The invention relates to a pre-tailing technology for mechanical dressing, in particular to a mechanical dressing technology for adsorbed vanadium ore. Background technique [0002] my country's vanadium ore resources are very rich, among which the adsorbed vanadium ore is widely distributed. The characteristic of this type of ore is that vanadium has no independent minerals and is adsorbed in other minerals. Because the ore contains low vanadium, it is difficult to carry out mechanical beneficiation and enrichment before chemical vanadium extraction, resulting in the ore entering the chemical vanadium extraction operation V 2 o 5 Low content and high total weight make the cost of vanadium extraction remain high. In recent years, many scientific and technical personnel have conducted research on this. The current mechanical beneficiation method is mainly graded enrichment, and some people have carried out certain work on the flotation process. Howeve...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03B1/00B03B1/04B03D1/02B03D1/01B03D1/008B03B5/52B03B5/62B03D101/02B03D101/04B03D103/04
Inventor 李洁马晶牛芳银吴天骄赵笑益王金平
Owner 西安西北有色地质研究院有限公司
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