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Method for selecting scheelite at normal temperature

A scheelite, normal temperature technology, applied in the field of scheelite flotation, can solve the problems of large fluctuations in sorting index, ore adaptability is not as good as heating, and low cost of beneficiation, so as to reduce water environmental pollution and improve recovery rate , the effect of reducing the dosage

Active Publication Date: 2016-10-12
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mineral processing cost of this method is low, but its adaptability to ore is not as good as that of the heating method. The separation index fluctuates greatly and contains high impurities. Usually, hydrochloric acid leaching can be used to obtain WO 3 More than 65% qualified scheelite concentrate

Method used

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  • Method for selecting scheelite at normal temperature
  • Method for selecting scheelite at normal temperature
  • Method for selecting scheelite at normal temperature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Blending: will contain WO 3 0.42% scheelite raw ore is injected into the flotation machine after grinding and grading, adjust the slurry concentration to 30% and the slurry pH value to about 9, and stir for 5 minutes.

[0023] 2) Rough selection: add yfb312 inhibitor (water glass and sodium humate, the weight ratio of the two is 10:1) 1600g / t, stir for 3min, then add the combined collection of sodium oleate and benzhydroxamic acid Agent 800g / t, through flotation to obtain scheelite coarse concentrate.

[0024] 3) Concentration: Concentrate the scheelite crude concentrate to 60%, use yfb312 (water glass and sodium humate, the weight ratio of the two is 10:1) as the inhibitor, the dosage is 1500g / t, and cool at room temperature After vigorously stirring for 30 minutes under the action of a magnetic field, dilute to a mass concentration of 30%, and obtain scheelite concentrate through six closed-circuit processes of blank selection.

[0025] Contrasting the concrete ...

Embodiment 2

[0030] 1) Blending: will contain WO 3 The 0.49% scheelite raw ore is injected into the flotation machine after grinding and grading, and the slurry concentration is adjusted to 33% and the pH value of the slurry is about 9, and stirred for 5 minutes.

[0031] 2) Rough selection: add yfb312 inhibitor (water glass and sodium humate, the weight ratio of the two is 10:1) 1650g / t, stir for 3min, then add the combined collection of sodium oleate and benzhydroxamic acid 750g / t of scheelite is used for rough separation of scheelite to obtain rough concentrate of scheelite.

[0032] 3) Selection: Concentrate the scheelite coarse concentrate to 60%, use yfb312 (water glass and sodium humate, the weight ratio of the two is 10:1) inhibitor, the dosage is 1800g / t, and the normal temperature magnetic field After stirring vigorously for 40 minutes under action, dilute to a mass concentration of 30%, and obtain scheelite concentrate through a closed-circuit process of six times of blank sel...

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Abstract

The invention discloses a method for selecting scheelite at normal temperature. The method comprises the following steps: (1) pulping: a raw ore is milled and classified to prepare pulp with a concentration of 30-35%; the pulp is injected in a flotation machine; and the pH of the pulp is adjusted within 7-9; (2) roughing: a water glass and sodium humate combined inhibiting agent is adopted to inhibit a calcium-contained gangue mineral; and a sodium oleate and benzohydroxamic acid combined capturing agent is added for roughing and scavenging to obtain a scheelite concentrate; (3) the concentration of the scheelite concentrate is condensed to 60%; and the water glass and sodium humate combined inhibiting agent is added for strongly stirring by above 30 m under the effect of a normal-temperature magnetic field to dilute to the mass concentration of 30%; and (4) six times of blank selection are performed for the scheelite concentrate treated in the step (3) to obtain the scheelite concentrate.

Description

technical field [0001] The invention belongs to the technical field of scheelite flotation, and in particular relates to a method for obtaining qualified scheelite concentrate at normal temperature. Background technique [0002] my country's tungsten resource reserves rank first in the world, and two-thirds of them are scheelite. With the depletion of easy-to-mining wolframite resources, we will strengthen the protection of minerals that are symbiotic with calcium-containing gangues, have low geological grades, and are not easy to mine. The development and utilization of scheelite resources is imminent. However, scheelite is often distributed in fine grains, the grade of raw ore is low, and it often coexists with calcium-containing gangue minerals with good buoyancy. problem. Due to the difficulty of separation between scheelite and calcium-containing gangue minerals, the index of scheelite concentrate is not good. At present, in order to obtain qualified scheelite concentr...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/018B03D101/02B03D101/06
CPCB03D1/00B03D1/018B03D2201/02B03D2201/06
Inventor 邱廷省匡敬忠邱仙辉李晓波宋宜富
Owner JIANGXI UNIV OF SCI & TECH
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