CN115254393A - Arsenic-sulfur separation method for arsenic-tin-lead-zinc-antimony polymetallic ore - Google Patents

Arsenic-sulfur separation method for arsenic-tin-lead-zinc-antimony polymetallic ore Download PDF

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Publication number
CN115254393A
CN115254393A CN202210912676.2A CN202210912676A CN115254393A CN 115254393 A CN115254393 A CN 115254393A CN 202210912676 A CN202210912676 A CN 202210912676A CN 115254393 A CN115254393 A CN 115254393A
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arsenic
sulfur
tailings
separation
flotation
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吴伯增
孙晓豪
胡明振
魏宗武
张茜
李世美
黄锦庆
黄润芝
黄艳
黄宝兴
蔡教忠
邱鸿鑫
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China University of Mining and Technology Beijing CUMTB
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China University of Mining and Technology Beijing CUMTB
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Priority to PCT/CN2023/076116 priority Critical patent/WO2024027132A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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Abstract

An arsenic-sulfur separation method of arsenic-tin-lead-zinc-antimony polymetallic ore comprises the following steps: (1) Recovering pyrrhotite in the zinc tailings by magnetic separation; (2) Performing arsenic-sulfur separation on pyrite and arsenopyrite through a flotation process to obtain arsenic concentrate of sulfur concentrate; (3) And (4) carrying out gravity separation (shaking table) on fine mud tin possibly existing in the arsenic concentrate to obtain the fine-particle tin concentrate. The invention can comprehensively recover the sulfur, arsenic and tin minerals in the lead-zinc flotation tailings, realize the comprehensive utilization of resources, reduce the discharge of the tailings and reduce the environmental pollution.

Description

Arsenic-sulfur separation method for arsenic-tin-lead-zinc-antimony polymetallic ore
Technical Field
The invention relates to the technical field of mineral separation, in particular to an arsenic-sulfur separation method of arsenic-tin-lead-zinc-antimony polymetallic ore.
Background
Since cassiterite-polymetallic sulphide ore has been produced for nearly 50 years, lead, antimony and zinc minerals are recovered by flotation in addition to cassiterite recovery, and because of the limitation of current technology level and production conditions, a large amount of sulfur and arsenic minerals and fine-grained cassiterite in zinc tailings can not be recovered all the time, so that a large amount of sulfur and arsenic minerals and fine-grained cassiterite are lost in the tailings. With the rapid development of economy in China, the environmental protection problem of enterprises is increasingly important, and particularly the environmental protection problem of non-ferrous metal smelteries is more prominent. Therefore, before smelting, in order to fully recycle resources and reduce the arsenic content in the sulfur concentrate, an advanced beneficiation process technology is adopted to improve the product quality, and comprehensive recovery of sulfur, arsenic and tin minerals in lead-zinc flotation tailings is provided.
Disclosure of Invention
The invention aims to provide an arsenic-sulfur separation method of an arsenic-tin-lead-zinc-antimony multi-metal ore aiming at the defects of the prior art, mainly aims at performing arsenic-sulfur separation on a zinc tail of the tin-lead-zinc-antimony multi-metal ore and improving the quality of a sulfur concentrate product.
In order to achieve the purpose, the invention adopts the following technical scheme: the arsenic-sulfur separation method of the arsenic-tin-lead-zinc-antimony polymetallic ore comprises the following specific operation steps:
(1) Arsenic and sulfur separation is carried out on lead-antimony-zinc separation tailings
The zinc-sulfur concentrate enters a magnetic separation process, and the ore is fed and enters magnetic separation in advance to produce magnetic minerals and non-magnetic minerals, wherein the magnetic minerals are mixed with the sulfur concentrate;
(2) After the magnetic minerals are subjected to spiral classification, overflowing the magnetic minerals to serve as tailings to be mixed with tailings of a flotation table;
(3) Enabling the spiral grading bottom flow to enter an arsenic-sulfur mixed flotation system for carrying out a sulfur-floating arsenic-inhibiting process, further carrying out mixed flotation on the mixed flotation concentrate, further enriching arsenic-containing tailings through a gravity table concentrator, wherein the concentrate is used as arsenic concentrate, and the table concentrator tailings are used as final tailings;
(4) The flotation process comprises the steps of sulfur and arsenic mixed flotation-sulfur and arsenic separation flotation (sulfur flotation and arsenic inhibition), wherein the mixed flotation tailings enter gravity separation to recover cassiterite, and the sulfur flotation and arsenic inhibition flotation tailings enter gravity separation to recover arsenic.
In the flotation process in the step (3), the flotation reagent for arsenic-sulfur separation is sodium humate: ammonium chloride = 2.
The invention has the beneficial effects that:
1. fully recycling resources, reducing the arsenic content in the sulfur concentrate and improving the value of the sulfur concentrate.
2. The discharge of tailings is reduced, the environmental pollution is reduced, and the comprehensive recovery of sulfur, arsenic and tin minerals in the lead-zinc flotation tailings is facilitated.
Drawings
FIG. 1 is a flow chart of the zinc tail arsenic sulfur separation float-magnet-gravity process of the invention.
Detailed Description
Example 1
This example is an example of the arsenic-sulfur separation method of the arsenic-tin-lead-zinc-antimony polymetallic ore according to the invention,
the mineral raw materials are lead-zinc separation tailings in a high-arsenic-tin polymetallic ore in Guangxi, wherein the average sulfur content is 28%, the arsenic content is 3.5% and the tin content is 0.26%; the method for efficiently separating arsenic from sulfur has the process flow shown in figure 1, and comprises the following steps:
(1) And (4) carrying out arsenic-sulfur separation on the lead-antimony-zinc separation tailings. Firstly, zinc-sulfur concentrate enters a magnetic separation design flow which is a magnetic separation process flow, ore feeding is carried out in advance, magnetic separation is carried out, and magnetic minerals and non-magnetic products are produced, wherein the magnetic minerals are mixed into the sulfur concentrate;
(2) After the magnetic minerals are subjected to spiral classification, overflowing the magnetic minerals to serve as tailings to be mixed with tailings of a flotation table;
(3) Enabling the spiral grading bottom flow to enter an arsenic-sulfur mixed floating system to carry out sulfur floating and arsenic inhibiting process flow; the flotation concentrate further concentrates the tailings containing arsenic through flotation of the flotation tailings through gravity separation (table concentrator), the concentrate is used as arsenic concentrate, and the table concentrator tailings are used as final tailings;
(4) The flotation process comprises the steps of sulfur and arsenic mixed flotation-sulfur and arsenic separation flotation (sulfur flotation and arsenic inhibition), wherein the mixed flotation tailings enter gravity separation to recover cassiterite, and the sulfur flotation and arsenic inhibition flotation tailings enter gravity separation to recover arsenic.
In the embodiment, the pyrrhotite is mainly removed in the magnetic separation process in the step (1), wherein the grades of S, as and Sn in the magnetic concentrate are respectively As follows: 34.01%, 0.63% and 0.11%, and the recovery rates are respectively as follows: 27.71%, 3.36% and 9.22%.
And (3) the grades of S, as and Sn in the arsenic concentrate are respectively As follows: 20.54%, 18.50% and 0.19%, and the recovery rates are respectively as follows: 14.75%, 86.90% and 14.03%.
The inhibitor used in the arsenic-sulfur separation process in the step (3) is 900g/t of sodium humate: ammonium chloride 1kg/t =2:1, collecting agent butyl sodium xanthate, the dosage of which is 360g/t, and the dosage of lime is 18kg/t.
The embodiment well realizes the separation of arsenic and sulfur in the zinc tailings, wherein the sulfur grade in the sulfur concentrate is 47.30 percent, the arsenic grade is 0.51 percent, and the sulfur recovery rate is 55.27 percent; the arsenic concentrate contains 16.56% of arsenic, 30.21% of sulfur and 90.66% of arsenic recovery rate.
Example 2
This example is another example of the arsenic-sulfur separation method of arsenic-tin-lead-zinc-antimony polymetallic ore according to the invention,
the mineral raw material is lead-zinc separation tailings in a high-arsenic-tin polymetallic ore in Yunnan, and contains 30 percent of sulfur, 2.5 percent of arsenic and 0.16 percent of tin on average; the process flow is shown in figure 1 and comprises the following steps:
(1) And carrying out arsenic and sulfur separation on the lead-zinc separation tailings. Firstly, zinc-sulfur concentrate enters a magnetic separation design flow which is a magnetic separation process flow, and ore is fed and enters magnetic separation in advance to produce magnetic substances and nonmagnetic products, wherein magnetic minerals are mixed into the sulfur concentrate.
(2) After the magnetic minerals are subjected to spiral classification, overflow is taken as tailings to be mixed with tailings of a flotation table.
(3) Enabling the spiral grading bottom flow to enter an arsenic-sulfur mixed floating system to carry out sulfur floating and arsenic inhibiting process flow; and further enriching the arsenic-containing tailings through the mixed flotation tailings by gravity separation (table concentrator), wherein the concentrate is used as arsenic concentrate, and the table concentrator tailings are used as final tailings.
(4) The flotation process comprises the steps of sulfur and arsenic mixed flotation-sulfur and arsenic separation flotation (sulfur flotation and arsenic inhibition), wherein the mixed flotation tailings enter gravity separation to recover cassiterite, and the sulfur flotation and arsenic inhibition flotation tailings enter gravity separation to recover arsenic.
In the embodiment, the magnetic separation process in the step (1) mainly removes pyrrhotite, wherein the grades of S, as and Sn in the magnetic concentrate are respectively As follows: 36.33%, 0.56% and 0.10%, and the recovery rates are respectively as follows: 29.88%, 3.25% and 8.33%.
And (3) the grades of S, as and Sn in the arsenic concentrate are respectively As follows: 21.34%, 19.35% and 0.13%, and the recovery rates are respectively as follows: 15.66%, 88.34% and 13.23%.
The inhibitor used in the arsenic-sulfur separation process in the step (3) is 900g/t of sodium humate: ammonium chloride 1kg/t =1:1, collecting agent butyl sodium xanthate, the dosage of which is 350g/t, and the dosage of lime is 20kg/t.
The embodiment shows that the process can better realize the separation of arsenic and sulfur in the zinc tailings, wherein the sulfur grade in the sulfur concentrate is 49.21 percent, the arsenic grade is 0.34 percent, and the sulfur recovery rate is 53.32 percent; the arsenic concentrate contains 15.45% of arsenic, 35.44% of sulfur and 91.34% of arsenic recovery rate.
Example 3
This example is another example of the arsenic-sulfur separation method of the arsenic-tin-lead-zinc-antimony polymetallic ore according to the invention,
the mineral raw materials are lead-zinc separation tailings in a high-arsenic-tin polymetallic ore in Guizhou, the average sulfur content of the tailings is 30%, the arsenic content of the tailings is 1.5%, and the tin content of the tailings is 0.16%; the method for efficiently separating arsenic and sulfur comprises the following steps of:
(1) And carrying out arsenic and sulfur separation on the lead-zinc separation tailings. Firstly, zinc-sulfur concentrate enters a magnetic separation design flow which is a magnetic separation process flow, and ore is fed and enters magnetic separation in advance to produce magnetic substances and nonmagnetic products, wherein magnetic minerals are mixed into the sulfur concentrate.
(2) After the magnetic minerals are subjected to spiral classification, overflow is taken as tailings to be mixed with tailings of a flotation table.
(3) Enabling the spiral grading bottom flow to enter an arsenic-sulfur mixed floating system to carry out sulfur floating and arsenic inhibition process flow; and further enriching the arsenic-containing tailings through the mixed flotation tailings by gravity separation (table concentrator), wherein the concentrate is used as arsenic concentrate, and the table concentrator tailings are used as final tailings.
(4) The flotation process comprises the steps of sulfur and arsenic mixed flotation-sulfur and arsenic separation flotation (sulfur flotation and arsenic inhibition), wherein the mixed flotation tailings enter gravity separation to recover cassiterite, and the sulfur flotation and arsenic inhibition flotation tailings enter gravity separation to recover arsenic.
In the embodiment, the pyrrhotite is mainly removed in the magnetic separation process in the step (1), wherein the grades of S, as and Sn in the magnetic concentrate are respectively As follows: 37.01%, 0.23% and 0.08%, and the recovery rates are respectively as follows: 30.33%, 2.97% and 7.10%.
And (3) the grades of S, as and Sn in the arsenic concentrate are respectively As follows: 21.32%, 19.32% and 0.14%, and the recovery rates are respectively as follows: 14.75%, 86.90% and 14.03%.
The inhibitor used in the arsenic-sulfur separation process in the step (3) is 900g/t of sodium humate: ammonium chloride 1kg/t =1: and 2, using 320g/t of collecting agent butyl sodium xanthate and 20kg/t of lime.
The embodiment shows that the arsenic and sulfur separation in the zinc tailings can be realized by adopting the process, wherein the sulfur grade in the sulfur concentrate is 49.21 percent, the arsenic grade is 0.22 percent, and the sulfur recovery rate is 52.33 percent; the arsenic concentrate contains 14.66 percent of arsenic, 28.32 percent of sulfur and 91.56 percent of arsenic recovery rate.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. The arsenic-sulfur separation method of the arsenic-tin-lead-zinc-antimony polymetallic ore is characterized by comprising the following specific operation steps of:
(1) Arsenic and sulfur separation of lead, antimony and zinc separation tailings
The zinc-sulfur concentrate enters a magnetic separation process, and the ore is fed and enters magnetic separation in advance to produce magnetic minerals and non-magnetic minerals, wherein the magnetic minerals are mixed with the sulfur concentrate;
(2) After the magnetic minerals are subjected to spiral classification, overflowing the magnetic minerals as tailings and mixing the tailings with tailings of a flotation table;
(3) The spiral grading bottom flow enters an arsenic-sulfur mixed flotation system to carry out a sulfur-floating and arsenic-inhibiting process, the mixed flotation concentrate is further subjected to mixed flotation, the tailings are further enriched in arsenic-containing tailings through a gravity table concentrator, the concentrate is used as arsenic concentrate, and the table concentrator tailings are used as final tailings;
(4) The flotation process comprises the steps of sulfur and arsenic mixed flotation-sulfur and arsenic separation flotation, wherein mixed flotation tailings enter gravity separation to recover cassiterite, and floating sulfur arsenic-inhibition flotation tailings enter gravity separation to recover arsenic.
2. The arsenic-sulfur separation method of the arsenic-tin-lead-zinc-antimony polymetallic ore according to claim 1, characterized in that the magnetic separation process in step (1) mainly removes pyrrhotite, and the grades of S, as and Sn in the sulfur concentrate are respectively As follows: 34.01%, 0.63% and 0.11%, and the recovery rates are respectively as follows: 27.71%, 3.36% and 9.22%.
3. The arsenic-sulfur separation method of the arsenic-tin-lead-zinc-antimony polymetallic ore according to claim 1, wherein the grades of S, as and Sn in the arsenic concentrate in the step (3) are respectively As follows: 20.54%, 18.50% and 0.19%, and the recovery rates are respectively as follows: 14.75%, 86.90% and 14.03%.
4. The arsenic-sulfur separation method of the arsenic-tin-lead-zinc-antimony polymetallic ore according to claim 1, wherein the flotation reagent for arsenic-sulfur separation adopted in the flotation process in step (3) is sodium humate: ammonium chloride = 2.
CN202210912676.2A 2022-05-05 2022-07-30 Arsenic-sulfur separation method for arsenic-tin-lead-zinc-antimony polymetallic ore Pending CN115254393A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024027132A1 (en) * 2022-05-05 2024-02-08 广西华锡集团股份有限公司 Arsenic-sulfur separation method for arsenic-tin-lead-zinc-antimony polymetallic ore

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024027132A1 (en) * 2022-05-05 2024-02-08 广西华锡集团股份有限公司 Arsenic-sulfur separation method for arsenic-tin-lead-zinc-antimony polymetallic ore

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