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Application of hydroxypropyl starch ether in scheelite flotation

A technology of hydroxypropyl starch ether and scheelite, applied in flotation, solid separation, etc., can solve the problems of poor quality of flotation concentrate, difficult separation of gangue minerals, low effective recovery rate, etc., and achieve low environmental pollution , improve the level of comprehensive utilization of resources, the effect of easy degradation

Active Publication Date: 2019-07-23
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the current complex and refractory scheelite flotation concentrates containing calcite, fluorite, quartz and other gangue minerals with poor quality, low effective recovery rate, complicated process flow, and high flotation costs, the present invention uses a flotation inhibitor Hydroxypropyl starch ether can inhibit scheelite flotation, significantly improve the difference in floatability between gangue minerals such as fluorite and calcite aluminosilicate minerals and scheelite minerals, and realize reverse flotation separation of gangue minerals and scheelite minerals , to solve the problem of difficult separation of gangue minerals such as scheelite and calcite, fluorite, aluminosilicate minerals

Method used

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  • Application of hydroxypropyl starch ether in scheelite flotation
  • Application of hydroxypropyl starch ether in scheelite flotation
  • Application of hydroxypropyl starch ether in scheelite flotation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The flotation test was carried out with XFGⅡ type hanging tank flotation machine. First, 2g of pure minerals were added to the flotation tank, and then 35ml of distilled water was added, and the pulp was adjusted for 1min. The hydroxypropyl starch ether inhibitor was stirred for 3 minutes, the sodium oleate 60mg / L was stirred for 3 minutes, and then scraped for 4 minutes. After the flotation test, the foam product is filtered, dried, weighed, assayed and the recovery rate calculated.

[0026] Examples The test results are shown in Table 1.

[0027] Table 1 Hydroxypropyl starch ether dosage on mineral inhibition behavior test results 1 (pH=7)

[0028]

Embodiment 2

[0030] The flotation test was carried out with XFGⅡ type hanging tank flotation machine. Firstly, 2g of pure minerals were added to the flotation tank, then 35ml of distilled water was added, and the slurry was adjusted for 1min. Propyl starch ether inhibitor was stirred for 3 minutes, sodium oleate 60 mg / L was stirred for 3 minutes, and then scraped for 4 minutes. After the flotation test, the foam product is filtered, dried, weighed, assayed and the recovery rate calculated.

[0031] Example test results are shown in Table 2.

[0032] Table 2 Hydroxypropyl Starch Ether Inhibitory Behavior Experiment Result 2 (pH=9) to Minerals

[0033]

Embodiment 3

[0035] The flotation test was carried out with XFGⅡ type hanging tank flotation machine. First, 2g of pure minerals were added to the flotation tank, and then 35ml of distilled water was added, and the slurry was adjusted for 1min. The hydroxypropyl starch ether inhibitor was stirred for 3 minutes, the sodium oleate 60mg / L was stirred for 3 minutes, and then scraped for 4 minutes. After the flotation test, the foam product is filtered, dried, weighed, assayed and the recovery rate calculated.

[0036] Example test results are shown in table 3.

[0037] Table 3 Hydroxypropyl Starch Ether Inhibitory Behavior Experimental Results 3 (pH=12) to Minerals

[0038]

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Abstract

The invention relates to a beneficiation technology, in particular to application of hydroxypropyl starch ether in scheelite flotation. According to the application, the flotation inhibitor, namely the hydroxypropyl starch ether can be used for inhibiting the scheelite flotation, the floatability difference of gangue minerals such as fluorite, calcite and aluminosilicate minerals and scheelite canbe remarkably improved, reverse flotation separation of the gangue minerals from the scheelite is realized, and the problem that the scheelite and the gangue minerals such as the calcite, the fluorite and the aluminosilicate minerals are difficult to separate is solved. The flotation inhibitor used in the application is beneficial to the improvement of the grade and the recovery rate of scheeliteconcentrate, the flotation process is shortened, production cost is reduced, and comprehensive utilization level of resources is improved.

Description

technical field [0001] The invention relates to mineral processing technology, in particular to the application of hydroxypropyl starch ether in scheelite flotation. Background technique [0002] my country's scheelite reserves are large, but most of them are of low grade, more than 80% of which are ≤0.4%, and the mineral composition is complex, and the embedded particle size is relatively fine. It is mainly associated with non-ferrous metals and precious metals, and some gangue minerals are associated with The buoyancy of scheelite is very close, resulting in the difficulty of sorting, poor concentrate quality, and low recovery rate in most scheelite in my country. The main beneficiation methods of scheelite are gravity separation and flotation. The gravitational separation method is used to process the scheelite with coarse particle size, and the flotation method is used to separate the fine-grained scheelite. The scheelite flotation process usually includes a roughing se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/016B03D1/02B03B9/00B03D101/06B03D103/02
CPCB03B9/00B03D1/016B03D1/025B03D2201/06B03D2203/025
Inventor 余新阳王强强王礼平王浩林黄志强胡琳琪廖晓峰
Owner JIANGXI UNIV OF SCI & TECH
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