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Method for improving beneficiation efficiency of pre-selection section of low-grade associated scheelite

A low-grade, scheelite technology, used in flotation, solid separation and other directions, can solve the problems of decreased pre-selection efficiency, low WO3 content, and the inability to obtain stable production indicators in the pre-selection section, and achieve improved recovery and concentrate grade. Effect

Pending Publication Date: 2021-09-17
洛阳豫鹭矿业有限责任公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With years of mining and utilization, the WO in the raw ore 3 The content is getting lower and lower, the original process flow and pharmaceutical system in the pre-selection section can no longer obtain stable production indicators, and the pre-selection efficiency has dropped sharply

Method used

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  • Method for improving beneficiation efficiency of pre-selection section of low-grade associated scheelite
  • Method for improving beneficiation efficiency of pre-selection section of low-grade associated scheelite
  • Method for improving beneficiation efficiency of pre-selection section of low-grade associated scheelite

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Main chemical composition of ore / %

[0033] components WO 3

Mo Fe SiO 2

CaO MgO content 0.018 0.028 4.56 54.59 38.01 1.91

[0034] This embodiment is specifically implemented according to the following process steps:

[0035] 1. Sodium carbonate is added to primary roughing, the consumption of sodium carbonate relative to the raw ore is 1000-2100g / t, and the consumption of sodium carbonate relative to the raw ore in this embodiment is 2100g / t; the consumption of sulfated lignite to the raw ore is 10-80g / t, The amount of sulfated lignite in this embodiment is 80g / t, the amount of acidified water glass relative to the raw ore is 0~500g / t, the present embodiment is 0g / t, and the consumption of fatty acid sodium relative to the raw ore is 120~320g / t, the amount of the present embodiment It is 120g / t. After the pulp and chemicals are fully mixed, the pulp is sent to the jet flotation machine for primary roughing of scheelite, an...

Embodiment 2

[0044] Main chemical composition of ore / %

[0045] components WO 3

Mo Fe SiO 2

CaO MgO content 0.083 0.032 6.09 44.23 36.35 2.84

[0046] The implementation steps are as follows:

[0047] 1. Add 1000g / t of sodium carbonate, 40g / t of sulfated lignite, 500g / t of acidified water glass, and 320g / t of sodium fatty acid into a rough selection. After the pulp and chemicals are fully mixed, the pulp is sent to the jet flotation machine for primary roughing of scheelite, and the foam product is high-grade scheelite coarse concentrate;

[0048] 2. The tailings from the primary roughing are lifted to the rectangular flotation column for secondary roughing of scheelite, and the foam product is low-grade scheelite coarse concentrate;

[0049] 3. Add 0g / t of sulfated lignite to the low-grade scheelite crude concentrate obtained from the second roughing, and send it to a conventional circular flotation column for pre-concentration. The low-grad...

Embodiment 3

[0057] Main chemical composition of ore / %

[0058] components WO 3

Mo Fe SiO 2

CaO MgO content 0.121 0.018 5.26 51.81 38.77 1.59

[0059] The implementation steps are as follows:

[0060] 1. Add 1800g / t of sodium carbonate, 10g / t of sulfated lignite, 300g / t of acidified water glass, and 240g / t of sodium fatty acid into a rough separation. After the pulp and chemicals are fully mixed, the pulp is sent to a rectangular flotation column for primary roughing of scheelite, and the foam product is high-grade scheelite coarse concentrate;

[0061] 2. The tailings from the primary roughing are lifted to the rectangular flotation column for secondary roughing of scheelite, and the foam product is low-grade scheelite coarse concentrate;

[0062] 3. Add 20g / t of sulfated lignite to the low-grade scheelite crude concentrate obtained from the second roughing, and send it to a conventional circular flotation column for pre-concentration. The l...

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Abstract

The invention discloses a method for improving the beneficiation efficiency of a pre-selection section of low-grade associated scheelite. The method is characterized in that: an agent is added into a molybdenum separation tailing incoming slurry stirring barrel, and after the ore slurry and the agent are fully and uniformly mixed, the mixture is lifted to a jet flotation machine for primary roughing of scheelite, wherein an inhibitor in the agent comprises sulfated lignite; the inhibitor is added into the low-grade scheelite rough concentrate obtained through secondary roughing, the low-grade scheelite rough concentrate is lifted into a flotation column to be subjected to pre-concentration to obtain high-grade rough concentrate, which is combined with the rough concentrate obtained through primary roughing to form final scheelite rough concentrate to be subjected to subsequent concentration; and scavenging jis carried out by using a jet flotation machine. According to the method, through the synergistic effect of different flotation machines or flotation columns adopted in different procedures and the use of sulfated lignite as a gangue inhibitor, the recovery rate and the concentrate grade of the low-grade scheelite pre-selection section are effectively improved; and the cost is low and the realization is easy.

Description

technical field [0001] The invention relates to a beneficiation method, in particular to a method for improving the beneficiation efficiency of a low-grade associated scheelite pre-selection section. Background technique [0002] Tungsten is an important strategic resource and a typical rare metal with high specificity, stable chemical properties, good electrical and thermal conductivity, and is an important part of modern high-tech new materials. Electron optical materials, special alloys, new functional materials and organometallic compounds all need to utilize the unique properties of tungsten. Therefore, tungsten is widely used in communication technology, electronic computer, aerospace development, medical and health, military and national defense and other fields. [0003] The Luoyang Luanchuan area is rich in molybdenum and tungsten resources. The Sandaozhuang Molybdenum and Tungsten Mine of Luoyang Luanchuan Molybdenum Industry Group Co., Ltd. is the molybdenum depo...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D1/14B03D101/06B03D101/02B03D103/04
CPCB03D1/018B03D1/14B03D2201/007B03D2201/06B03D2201/02B03D2203/04
Inventor 周敬闽焦芬王旭覃文庆党自平张健姚新卫姚红卫魏成东黄江涛李浩兵任满年宋灏
Owner 洛阳豫鹭矿业有限责任公司
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