Method for recycling fine and superfine cassiterites from oxidized lode tin mud tailings

An oxidizing, fine-grained technology, used in solid separation, flotation and other directions, can solve the problems of not realizing the effective recovery of fine-grained and fine-grained cassiterite, fine-grained cassiterite embedded particle size, and complex symbiotic relationship. The effect of restoration of ecological environment, improvement of recovery rate and simple process

Inactive Publication Date: 2013-05-01
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of low tin grade, large mud content, fine particle size of cassiterite embedded in cassiterite, complex symbiotic relationship, and a large amount of gangue minerals, fine-grained and fine-grained oxidized vein tin ore tailings have not been realized. Efficient recovery of cassiterite

Method used

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  • Method for recycling fine and superfine cassiterites from oxidized lode tin mud tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: the specific steps of fine-grained and fine-grained cassiterite in the reclaiming oxidized vein tin ore slime tailings of the present embodiment comprise as follows:

[0026] (1) Add water to the oxidized vein tin ore slime tailings with a tin content of 0.20wt% until the slurry concentration is 25wt%;

[0027] (2) Roughly select the slurry obtained in step (1), and add 300g of activator and 500g of collector in turn for each ton of oxidized vein tin ore tailings according to the mass of oxidized vein tin ore tailings 1. The foaming agent of 60g, the foam product obtained through roughing is the roughing concentrate, and the product in the tank obtained is the roughing ore;

[0028] (3) Under the condition of not adding any chemical agent, the rough beneficiation obtained in step (2) is scavenged, the foam product obtained after scavenging is the scavenging ore, and the product in the tank is the final tailings. Return to the rough selection operation and...

Embodiment 2

[0031]Embodiment 2: the specific steps of fine-grained and fine-grained cassiterite in the reclaiming oxidized vein tin ore slime tailings of the present embodiment comprise as follows:

[0032] (1) Add water to the oxidized vein tin ore tailings with a tin content of 0.12wt% to adjust the slurry concentration to 28wt%;

[0033] (2) Roughly select the slurry obtained in step (1), and add 500g / t of activator, 400g / t collector, 100g / t foaming agent, the foam product obtained through roughing is roughing concentrate, and the product in the tank obtained is roughing ore;

[0034] (3) Under the condition of not adding any chemical agent, the rough ore obtained in step (2) is scavenged once, the obtained foam product is the scavenging ore, the product in the tank is the final tailings, and the scavenging is returned to the rough Choose a job and choose again;

[0035] (4) The rougher concentrate obtained in step (2) has been selected four times, and the products in the tank obtain...

Embodiment 3

[0037] Embodiment 3: the specific steps of fine-grained and fine-grained cassiterite in the reclaiming oxidized vein tin ore slime tailings of the present embodiment comprise as follows:

[0038] (1) Add water to the oxidized vein tin ore slime tailings with a tin content of 0.10wt% until the slurry concentration is 30wt%;

[0039] (2) Roughly select the slurry obtained in step (1), and add 700g / t of activator, 800g / t collector, 150g / t foaming agent, the foam product obtained through roughing is roughing concentrate, and the product in the tank obtained is roughing ore;

[0040] (3) Under the condition of not adding any chemical agent, the rough beneficiation obtained in step (2) is scavenged, the foam product obtained after scavenging is the scavenging ore, and the product in the tank is the final tailings. Return to the rough selection operation and choose again;

[0041] (4) The rougher concentrate obtained in step (2) has been selected four times, and the products in the...

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Abstract

The invention relates to a method for recycling fine and superfine cassiterites from oxidized lode tin mud tailings and belongs to the technical field of mineral process engineering. The method comprises the following steps: adding water to the oxidized lode tin mud tailings and mixing slurry; during a roughing process, respectively adding activating agents, collecting agents and foaming agents in turn; roughing, thereby obtaining a foam product as a roughing concentrate and obtaining an in-slot product as a roughing middling; without adding any drug, scavenging the roughing middling, thereby obtaining the foam product as the scavenging middling and the in-slot product as the final tailing; returning the scavenging middling to the roughing operation for roughing again; and during a finely separating process, finely separating the roughing concentrate for four times, respectively returning the fine separating middling obtained from the finely separating operation at each time to the last operation for separating again, only adding the collecting agents and the foaming agents after finishing the fine separating for the third time, and separating and finally obtaining the tin-rich middling. According to the method, the process is simple, the flow structure is reasonable, the adaptability to raw materials is wider and the industrial implementation is easily performed.

Description

technical field [0001] The invention relates to a method for recovering fine-grained and fine-grained cassiterite in oxidized vein tin ore tailings. Cassiterite and fine-grained cassiterite belong to the technical field of mineral processing engineering. Background technique [0002] Cassiterite and a very small amount of phlegmatite are the main tin-containing minerals available in nature. Because cassiterite is brittle and easy to be crushed, it is easy to generate a large amount of fine-grained, primary slime and secondary slime during the mining process. . Studies have shown that the output rate of ore slime is about 40-50% of the original ore, and the metal rate is above 30%. [0003] my country's cumulative proven tin metal is about 5.6 million tons, and the remaining reserves are about 3.55 million tons by the end of 1999, accounting for about 1 / 3 of the world's basic reserves of tin resources, ranking first in the world. my country's tin reserves are highly concen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00
Inventor 童雄周永诚吕晋芳王晓邓政斌谢贤谢峰任帅鹏吕向文吴宁
Owner KUNMING UNIV OF SCI & TECH
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