A kind of production technology of high-grade sulfur concentrate

A high-grade sulfur concentrate and production process technology, applied in the direction of solid separation, flotation, etc., can solve the problems of unsatisfactory separation of new minerals, comprehensive utilization of unfavorable tailings, and improvement of recovery rate, which is conducive to popularization and application , Improve mineral buoyancy, reduce taste effect

Active Publication Date: 2020-11-03
内蒙古金辉稀矿有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The process flow is long, the middle ore needs to be concentrated and dehydrated before entering the flotation, the sulfur recovery rate is low, and the tailings have high sulfur content, which is not conducive to the comprehensive utilization of tailings
[0004] Chinese patent application 201110229252.8 is a method for producing high-grade sulfur concentrate from pyrite by step-by-step flotation. The steps include using pyrite ore with a sulfur content of 15-36% as raw material, crushing and grinding Carry out another flotation to obtain sulfur concentrate I and tailings, and then carry out flotation on the tailings to obtain rougher concentrate and rougher tailings, and finally conduct 2-4 separations on the rougher concentrate to obtain sulfur concentrate Ⅱ, Sweep the rougher tailings 2-3 times to get the final tailings, combine the sulfur concentrate Ⅰ and sulfur concentrate Ⅱ to get the sulfur concentrate, but the recovery rate needs to be improved
[0005] When the nature of raw ore changes, the existing technological process, chemical types, and systems cannot meet the selection of new minerals; low-sulfur grade pyrite does not have high competitiveness in the existing market environment, and cannot provide To create profits, the company needs to further improve the grade of sulfur concentrate; in the existing technology of improving the grade of sulfur content from zinc beneficiation tailings, the existing grinding fineness leads to serious inter-containment of zinc elements in sulfur concentrate, Requires specific means to reduce zinc content in sulfur concentrates

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  • A kind of production technology of high-grade sulfur concentrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A production process of high-grade sulfide concentrate includes the following preparation steps:

[0036] (1) A rough selection: take the slurry of zinc tailings with a particle size of 50 μm, add 0.420 kg / t sulfuric acid and 0.420 kg / t SA activator (the SA activator manufacturers used in the specific embodiments of the present invention are all It is activated by Zhaoyuan Jindao Chemical Co., Ltd. of Shandong Province, the same below), 0.07kg / t of copper sulfate (the mass ratio of sulfuric acid, SA activator and copper sulfate is 6:6:1), and add 0.1kg / t The mixture of butyl xanthate and ethyl mercaptan (the mass ratio of butyl xanthate to ethyl mercaptan is 3:1) is adjusted by the collector, and then sent to the flotation tank for rough separation to obtain the rough concentrate And roughing tailings;

[0037] (2) Secondary roughing and sweeping recovery: the roughing tailings are subjected to the second roughing to obtain the second roughing concentrate and the second rou...

Embodiment 2

[0041] A production process of high-grade sulfide concentrate includes the following preparation steps:

[0042] (1) A rough selection: take the slurry of zinc tailings with a particle size of 50μm, add 0.420kg / t sulfuric acid, 0.420kg / t SA activator, 0.07kg / t copper sulfate (sulfuric acid, SA activator and sulfuric acid The mass ratio of copper is 6:6:1) activate, and add 0.1kg / t of a mixture of butyl xanthate and ethyl mercaptan (the mass ratio of butyl xanthate to ethyl mercaptan is 3:1) collector To reconcile, add 0.020kg / t of pine oil and eucalyptus oil (the mass ratio of the two is 1:1) as a foaming agent, and 0.2kg / t of water glass and ethylenediaminetetraacetic acid disodium mixture Used as inhibitor (mass ratio is 3:1), and then sent to the flotation tank for roughing to obtain roughing concentrate and roughing tailings;

[0043] (2) Secondary roughing and sweeping recovery: the roughing tailings are subjected to the second roughing to obtain the second roughing concentra...

Embodiment 3

[0047] A production process of high-grade sulfide concentrate includes the following preparation steps:

[0048] (1) A rough selection: take the slurry of zinc tailings with a particle size of 10μm, add 0.125kg / t sulfuric acid, 0.330kg / t SA activator, 0.042kg / t copper sulfate (sulfuric acid, SA activator and sulfuric acid The mass ratio of copper is 3:8:1) activate, and add 0.2kg / t of a mixture of butyl xanthate and ethanethiol (the mass ratio of butyl xanthate to ethanethiol is 1:1) collector To reconcile, add 0.01kg / t of pine oil and eucalyptus oil mixture (the mass ratio of the two is 1:1) as foaming agent, and 0.1kg / t of water glass and disodium ethylenediaminetetraacetic acid mixture After being used as inhibitor (the mass ratio is 2:1), it is sent to the flotation tank for roughing to obtain roughing concentrate and roughing tailings;

[0049] (2) Secondary roughing and sweeping recovery: the roughing tailings are subjected to the second roughing to obtain the second roughin...

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Abstract

The invention belongs to the field of beneficiation, and particularly relates to a production technology of high-grade sulfur concentrate. The technology comprises the steps of conducting preliminaryroughing, concentration and enrichment, tailings scavenging and recycling and the like on zinc tailings. The sulfur-containing grade of the sulfur concentrate is improved, the recycling rate of the sulfur concentrate is increased, the technology process is simple, the production cost is low, and thus the production technology is suitable for industrial application and popularization.

Description

Technical field [0001] The invention belongs to the field of beneficiation, and specifically relates to a production process of high-grade sulfur concentrate. Background technique [0002] Modernization has prompted the continuous exploitation of a large number of lead-zinc minerals, leading to the increasingly exhausted lead-zinc resources. At the same time, a large number of lead-zinc tailings were produced and stored in the tailings pond in the form of long-term storage, which not only caused large areas of land to be occupied, but also caused ecological environmental damage such as soil erosion and water pollution. As a surplus mineral resource, tailings are very necessary for comprehensive utilization, no matter from the sustainable development of resources or the need of environmental protection. At present, the comprehensive utilization of lead-zinc tailings resources at home and abroad mainly focuses on the reselection of valuable resources, the application of constructi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00B03D1/008B03D1/012B03D1/016B03D1/018B03D101/02B03D101/04B03D101/06B03D103/04
CPCB03D1/00B03D1/008B03D1/012B03D1/016B03D1/018B03D2201/02B03D2201/04B03D2201/06B03D2203/04
Inventor 张开智刘堂吉孟瑞敏
Owner 内蒙古金辉稀矿有限公司
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