Method for recovering low-concentration calcite type fluorite tailing containing mica

A technology of fluorite tailings and calcite type, which is applied in the direction of solid separation and flotation, can solve the problems of low utilization rate of tailings pond, pollution of flocculation backwater, poor sorting efficiency, etc., to solve the problem of difficult concentration and reduce inventory Stress, Adaptive Effects

Pending Publication Date: 2018-08-10
CHINA UNIV OF MINING & TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Technical problem: The purpose of the present invention is to provide a low-concentration microfine-particle The recovery method of mica-containing calcite-type fluorite tailings uses high-efficiency sorting equipment to directly recover fine-grained tailings in a low-concentration state

Method used

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  • Method for recovering low-concentration calcite type fluorite tailing containing mica
  • Method for recovering low-concentration calcite type fluorite tailing containing mica
  • Method for recovering low-concentration calcite type fluorite tailing containing mica

Examples

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Effect test

example 1

[0020] Example 1: Fluorite tailings slurry with solid mass concentration C of 7%, fineness of -0.045mm and mica-containing fluorite tailings with a content of 85%, is fed into the feed pump for stirring by the feed pump 2 of model LSB-40 Barrel 1, through the Φ1000×1000mm mixing barrel 1, perform high-speed shear and stirring pretreatment on the pulp, the stirring speed is 1000r / min; add 500g / t sodium carbonate to the pretreated pulp according to the mass ratio, stir for 5min, and then add 400g / t sodium silicate, stir for 5 minutes, then add 50g / t oleic acid, stir for 5 minutes, the stirring speed is 1000r / min; send the evenly mixed pulp into FCSMCΦ400×4000mm swirl-static micro-bubble flotation column, using the model It is a 50LZ-275 circulation pump 7 for sorting, and the foam product of the flotation column is the concentrate product. The underflow of the flotation column is the tailings product; the foam and underflow were filtered, dried and tested respectively, and the ...

example 2

[0024] Example 2: The ore pulp solid mass concentration C of the raw ore is 5%, the fineness is -0.045mm, and the content accounts for 87% of mica-containing fluorite tailings. The pulp is subjected to high-speed shear pretreatment through the mixing tank 1, and the stirring speed is 1000r / min; Add 700g / t sodium carbonate to the pretreated pulp according to the mass ratio, stir for 5min, then add 400g / t sodium silicate, stir for 5min, then add 40g / t oleic acid, stir for 5min, the stirring speed is 1000r / min ; The evenly mixed pulp is sent to the cyclone-static micro-bubble flotation column for separation, and the foam product of the flotation column is the concentrate product. The underflow of the flotation column is the tailings product; the foam and underflow were filtered, dried and tested respectively, and the final results are shown in Table 2.

[0025] Table 2 sorting test results

[0026]

[0027] As can be seen from Table 2, it can be seen from Table 1 that the con...

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Abstract

The invention relates to a method for recovering a low-concentration calcite type fluorite tailing containing a mica, and belongs to an efficient recovery method for comprehensive utilization of mineral resources. The method comprises the following steps that a swirling flow-static microbubble flotation column system is adopted, wherein the swirling flow-static microbubble flotation column systemcomprises a stirring barrel, a feeding pump, a feeding port, a flotation column, a concentrate port, a bubble generator, a circulating pump, an electric valve and a tailing port; a on-site low-concentration fluorite tailing containing the mica is directly sent into the stirring barrel as raw ore pulp, firstly, high-speed shearing and stirring pretreatment is carried out through the stirring barrel, then dispersant, inhibitor and collector are sequentially added according to the mass ratio to carry out stirring and size mixing, and then a mixture is sent into the flotation column from the feeding port through the feeding pump to be directly sorted and recovered, concentrate floats upwards and flows out from the concentrate port, the tailing flows out from the tailing port under the action of the electric valve, and thus the fluorite tailing can be quickly and effectively recovered. The problems of low utilization rate of an existing tailing pond, long process flow, high cost, poor separation efficiency, and the flocculation water pollution existing in tailing recovery are solved.

Description

technical field [0001] The invention relates to a high-efficiency recovery method for comprehensive utilization of mineral resources, in particular to a recovery method suitable for low-concentration fine-grain mica-containing calcite-type fluorite tailings with pulp solid mass concentration C≤8%. Background technique [0002] Fluorite, the main component is CaF 2 , due to its special optical properties and is the main fluorine-containing mineral, it is widely used in chemical industry, metallurgy, cement, optical and other industries, and is an important strategic resource. There are few single fluorite deposits in my country, most of which are associated deposits with low grade, fine particle size of mineral embedding, and similar physical and chemical properties of gangue minerals and target minerals, resulting in poor separation effect in actual production and low utilization rate of mineral resources. With the development of the economy and the scarcity of resources, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/14
CPCB03D1/1425
Inventor 马子龙刘忠义廖寅飞曹亦俊
Owner CHINA UNIV OF MINING & TECH
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