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Positive flotation method for bauxite

A technology of positive flotation and bauxite, applied in flotation, solid separation, etc., can solve the index deterioration of fine tailings yield and recovery rate in flotation system, reduce the processing capacity of flotation single equipment, flotation system Reduced processing capacity and other issues, to achieve the effects of easy promotion, improved flotation index, and low production cost

Active Publication Date: 2012-12-19
中铝郑州有色金属研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Similarly, a very low flotation concentration will significantly reduce the processing capacity of a single flotation device, which in turn will lead to a reduction in the processing capacity of the entire flotation system. indicators of mine as well as yield and recovery have deteriorated

Method used

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  • Positive flotation method for bauxite
  • Positive flotation method for bauxite
  • Positive flotation method for bauxite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Taking Henan bauxite as the test ore sample, the raw ore Al2O3 is 59.40%, SiO2 is 13.67%, the aluminum-silicon ratio is 4.35, and the concentration of the raw ore pulp is 40.17%. The principle process flow chart adopted is shown in the attachment figure 1 , the specific flotation process is as follows:

[0012] Low-grade bauxite in Henan with a processing capacity of 1.7t / h After grinding in the ball mill and grading by the spiral classifier, the qualified raw ore pulp obtained is first transported under a certain external force and sprayed to the scavenging foam collection tank, after the scavenging foam is completely washed away, it is transported through the scavenging foam The tube returns to the coarser mixing drum. In the roughing mixing tank, it directly enters the roughing operation after interacting with flotation agents (pH value adjusters, dispersants, collectors, inhibitors) and other products of the flotation operation. After the beneficiation operation,...

Embodiment 2

[0017] Taking Henan bauxite as the test ore sample, the raw ore Al2O3 is 59.80%, SiO2 is 13.88%, the aluminum-silicon ratio is 4.31, and the concentration of the raw ore pulp is 42.34%. The principle process flow chart adopted is shown in the attachment figure 1 , the specific flotation process is as follows:

[0018] Low-grade bauxite in Henan with a processing capacity of 2.4t / h After grinding in the ball mill and grading by hydrocyclone, the qualified raw ore slurry obtained is first transported and sprayed to the scavenging foam collection tank under a certain external force, and after the scavenging foam is completely washed away, it passes through the scavenging foam The transfer pipe returns to the coarser mixing drum. In the roughing mixing tank, it directly enters the roughing operation after interacting with flotation agents (pH value adjusters, dispersants, collectors, inhibitors) and other products of the flotation operation. After the beneficiation operation, i...

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Abstract

The invention discloses a positive flotation method for bauxite, and relates to an improvement on an ore dressing method for bauxite. The flotation method comprises the steps of ore grinding, grading and flotation. The method is characterized in that: original ore pulp obtained by grinding and grading the bauxite is sprayed into a scavenging foam collecting tank in the flotation process to wash away the scavenging foam, then the ore pulp is returned to a roughing stirring barrel through an ore pulp conveying pipe, and the ore pulp is acted with a flotation agent to perform the flotation process in the roughing stirring barrel. The method can remarkably improve the concentration of the ore pulp and further improve the treatment amount and flotation index of the whole flotation system, and has the advantages of simple process flow, low production cost, strong practicability and easy popularization.

Description

technical field [0001] A bauxite positive flotation method relates to an improvement of a bauxite beneficiation method. Background technique [0002] At present, in the bauxite positive flotation process, the process usually includes grinding, classification and flotation. After the raw ore is ground and classified, the qualified raw ore pulp containing flotation agents first enters the roughing operation, and the roughing foam is used as the concentrate after one or more beneficiation operations or directly as the concentrate. The foam enters the next level of selection, and the selected underflow returns in sequence; the rough selection underflow is used as tailings or directly as tailings after one or more sweeping operations, and the underflow of each level of scavenging enters the next level of scavenging. Sweep bubbles in order to return. In the flotation process, whether it is a flotation machine, a flotation column, or other flotation equipment, the conventional fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/02
Inventor 陈湘清周杰强陈兴华陈占华马俊伟张建强郭鑫胡秋云李花霞闫琨
Owner 中铝郑州有色金属研究院有限公司
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