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Inhibiting agent capable of selectively inhibiting calcium-containing gangue minerals in scheelite ores

A technology of inhibitor and scheelite, applied in flotation, solid separation, etc., can solve problems such as environmental impact, scheelite flotation index has a great influence, operation and maintenance difficulties, and achieve the effect of improving the effect

Inactive Publication Date: 2014-08-27
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the modulus, dosage, pH value and temperature of water glass have a great influence on the flotation index of scheelite. Since the flotation is carried out under high-alkali and high-temperature conditions, it brings great difficulties to operation and maintenance, and the environment is also difficult. will be greatly affected

Method used

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  • Inhibiting agent capable of selectively inhibiting calcium-containing gangue minerals in scheelite ores
  • Inhibiting agent capable of selectively inhibiting calcium-containing gangue minerals in scheelite ores
  • Inhibiting agent capable of selectively inhibiting calcium-containing gangue minerals in scheelite ores

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The inhibitor of calcium-containing gangue minerals in the selective inhibition of scheelite ore described in this embodiment is formed by the mixed reaction of the following raw materials, and each raw material and its weight percentage are: Pb(NO 3 ) 80%, sodium polyacrylate (molecular weight 8-10 million) 20%.

[0016] The inhibitor prepared in this example is added to the pre-desulfurized scheelite containing WO in a scheelite dressing plant in Jiangxi. 3 0.55%, the addition amount is 225g / t, after flotation separation, the separation results in Table 1 are obtained.

[0017] Table 1 Flotation index of scheelite

[0018]

Embodiment 2

[0020] The inhibitor of calcium-containing gangue minerals in the selective inhibition of scheelite ore described in this embodiment is formed by the mixed reaction of the following raw materials, and each raw material and its weight percentage are: Pb(NO 3 ) 90%, polyacrylic acid 10%.

[0021] The inhibitor prepared in this example was added to low-grade scheelite ore containing WO in a certain place in Hunan. 3 0.39%, the addition amount is 250g / t, after flotation separation, the separation results in Table 2 are obtained.

[0022] Table 2 Flotation index of scheelite

[0023]

Embodiment 3

[0025] The inhibitor of calcium-containing gangue minerals in the selective inhibition of scheelite ore described in this embodiment is formed by the mixed reaction of the following raw materials, and each raw material and its weight percentage are: Pb(NO 3 ) 85%, CP5 (acrylic acid-maleic acid copolymer) 15%.

[0026] The inhibitor prepared in this example was added to low-grade scheelite ore containing WO in a certain place in Hunan. 3 0.36%, the addition amount is 260g / t, after flotation separation, the separation results in Table 3 are obtained.

[0027] Table 3 Flotation indicators of scheelite

[0028]

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Abstract

The invention discloses an inhibiting agent capable of selectively inhibiting calcium-containing gangue minerals in scheelite ores, and belongs to the technical field of mineral processing engineering. The inhibiting agent is formed by reacting the mixture of metal salt 80 percent-90 percent and polycarboxylate compounds 10 percent-20 percent. As metal ions have a selective activation effect on the calcium active points of the calcium-containing minerals, the selective inhibition effect on the calcium-containing gangue minerals by the polycarboxylate compounds is enhanced, and the effect of the inhibiting agent is improved. The inhibiting agent can be used in ore slurry at normal temperature, the usage amount of the inhibiting agent ranges from 200 g / t to 300 g / t, and the inhibiting agent is suitable for recovering scheelite from ores by selectively inhibiting the calcium-containing gangue minerals such as fluorspar and calcite when scheelite gangue minerals are mainly the calcium-containing minerals (the fluorspar and the calcite).

Description

technical field [0001] The invention relates to an inhibitor for selectively inhibiting calcium-containing gangue minerals in scheelite ore, and belongs to the technical field of mineral processing engineering. Background technique [0002] my country's tungsten ore resources mainly include wolframite, scheelite and black and white mixed tungsten. The easy-to-sort wolframite resources have been basically exhausted. The existing tungsten resources are mainly difficult-to-select scheelite, and scheelite More than 80% of the geological grades are less than 0.4%, and the components are complex, and the associated scheelite deposits account for 70% of all scheelite deposits. The types of scheelite ore mainly include scheelite-calcium gangue minerals (fluorite, calcite, etc.) and scheelite-silicate minerals (quartz, etc.), of which scheelite-calcium gangue minerals The sorting and separation of type ore is more difficult. [0003] Scheelite ore beneficiation generally adopts flot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/06
Inventor 张英
Owner KUNMING UNIV OF SCI & TECH
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