A method for comprehensive recovery of silver, tin and iron from quartz vein type tin tailings

A technology for tailings and veins, applied in chemical instruments and methods, solid separation, flotation, etc., can solve problems such as poor sorting effect and large workload, achieve good beneficiation indicators, improve production capacity, and energy consumption. low effect

Active Publication Date: 2021-09-28
INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to overcome the disadvantages and deficiencies of large amount of work and poor separation effect when the mineral processing method of the prior art is applied to the mineral processing of fine-grained cassiterite in quartz vein belt type tin tailings, and to provide a Method for Comprehensive Recovery of Silver, Tin and Iron from Banded Tin Tailings

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  • A method for comprehensive recovery of silver, tin and iron from quartz vein type tin tailings

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Effect test

Embodiment 1

[0052] The present embodiment provides a method for comprehensively recovering silver, tin and iron from quartz vein type tin tailings, such as figure 1 , the process is as follows.

[0053]A certain tin tailings has a tin grade of 0.34%, an iron grade of 12.50% and a silver grade of 25.30g / t, and cassiterite is mainly composed of fine particles. The ore samples are classified into two grades of +0.25mm and -0.25mm after stirring and pulping. Among them, the yield rate of +0.25mm particle size is 16.09%, the tin grade is 0.17%, and the tin recovery rate is 7.97%. -0.25mm particle size, add water to adjust the slurry to a concentration of 30%. According to each ton of ore, add 80 grams of 1,3-dimethylbutyl xanthate sodium and 40 grams of methyl pentanol for roughing. Add 40 grams of 1,3-dimethylbutyl xanthate sodium and 20 grams of methyl amyl alcohol to the tailings for scavenging; the rough concentrate and sweep concentrate are combined into sulfur rough concentrate, and th...

Embodiment 2

[0055] This embodiment provides a method for comprehensively recovering silver, tin and iron from quartz vein type tin tailings, and the process is as follows.

[0056] The tin grade of a tin tailings is 0.40%, the iron grade is 15.42% and the silver grade is 22.33g / t. The ore samples are classified into two grades of +0.25mm and -0.25mm after stirring and pulping. -0.25mm particle size, add water to adjust the pulp to a concentration of 29%. According to each ton of ore, add 100 grams of 1,3-dimethylbutyl xanthate sodium and 30 grams of methyl amyl alcohol for roughing, roughing Add 50 grams of 1,3-dimethylbutyl xanthate sodium and 15 grams of methyl amyl alcohol to the tailings for scavenging; the rough concentrate and the sweep concentrate are combined into sulfur rough concentrate, and the silver recovery rate is 89.35% . Sulfur dressing tailings are classified into two grades of +0.075mm and -0.075mm, and -0.075mm is re-selected by centrifugal concentrator to obtain cen...

Embodiment 3

[0058] This embodiment provides a method for comprehensively recovering silver, tin and iron from quartz vein type tin tailings, and the process is as follows.

[0059] The tin grade of a tin tailings is 0.49%, the iron grade is 11.39% and the silver grade is 35.23g / t. The ore samples are classified into two grades of +0.25mm and -0.25mm after stirring and pulping. -0.25mm particle size, add water to adjust the pulp to a concentration of 30%, and add 90 grams of 1,3-dimethyl butyl xanthate potassium and 30 grams of methyl pentanol in turn for roughing, based on the calculation of each ton of ore. Add 45 grams of 1,3-dimethylbutyl xanthate potassium and 15 grams of methyl amyl alcohol to the tailings for scavenging; the rough concentrate and sweep concentrate are combined into sulfur rough concentrate, and the silver recovery rate is 93.25% . Sulfur dressing tailings are classified into two grades of +0.075mm and -0.075mm, and -0.075mm is re-selected by centrifugal concentrat...

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Abstract

The invention relates to a method for comprehensively recovering silver, tin and iron from quartz vein type tin tailings. The beneficiation method includes the following steps: S1: classify the tin tailings and carry out flotation at the fine-grained grade; S2: adjust the slurry, perform a rough separation, a sweep separation and a blank separation to obtain silver concentrate and sulfur separation tailings ;S3: Sulfur separation tailings classification, fine-grained class for cassiterite separation operations; S4: Gravity separation, to obtain centrifugal rough concentrate and centrifugal tailings; S5: Magnetic separation and centrifugal coarse concentrate to obtain iron concentrate and magnetic separation Tailings; S6: Perform a flotation roughing on the magnetic separation tailings to obtain a flotation roughing concentrate and a flotation roughing tailings; S7: Perform a flotation sweep on the flotation roughing tailings to obtain a flotation roughing Concentrate and sweeping tailings; S8: perform three blank separations on the flotation rough concentrate to obtain tin rough concentrate; S9: re-select tin rough concentrate to obtain tin concentrate and tin medium ore. The beneficiation method has low energy consumption, small equipment footprint and high separation efficiency.

Description

technical field [0001] The invention relates to the technical field of mineral processing, and more specifically relates to a method for comprehensively recovering silver, tin and iron from quartz vein type tin tailings. [0002] technical background [0003] As the foundation of the pillar industry, tin resources are exploited and utilized in large quantities, and the reserves are decreasing year by year, while the amount of tailings is increasing at an alarming rate. The storage and idleness of these tailings occupy a large amount of land resources, pollute the environment, and cause serious waste of resources. . With the increasing shortage of tin ore resources, secondary utilization of tin tailings and recovery of valuable components can avoid waste of resources, protect the environment, and remove potential safety hazards caused by tailings accumulation. [0004] my country's tin tailings have the characteristics of low grade, fine particle size, few monomer particles i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/018B03B9/00B03C1/30B03D101/02B03D101/04B03D101/00B03D103/04
CPCB03B9/00B03C1/30B03D1/018B03D2201/007B03D2201/02B03D2201/04B03D2203/04
Inventor 王成行邱显扬胡真汪泰丘世澄李沛伦李汉文杨凯志邹坚坚李强姚艳清时晗
Owner INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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