CN116328952A - Mineral separation method for recovering tungsten tin sulfide from polymetallic tungsten ore tailings - Google Patents

Mineral separation method for recovering tungsten tin sulfide from polymetallic tungsten ore tailings Download PDF

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CN116328952A
CN116328952A CN202310234953.3A CN202310234953A CN116328952A CN 116328952 A CN116328952 A CN 116328952A CN 202310234953 A CN202310234953 A CN 202310234953A CN 116328952 A CN116328952 A CN 116328952A
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tungsten
concentrate
metal
tin
mixed
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韩海生
付君浩
孙伟
曾礼强
邓朝政
倪扬
张志峰
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Central South University
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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
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/02—Froth-flotation processes
    • 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
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/002—Inorganic compounds
    • 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
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B03D1/008—Organic compounds containing oxygen
    • 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
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/02—Collectors
    • 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
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/06—Depressants
    • 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
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2203/00—Specified materials treated by the flotation agents; specified applications
    • B03D2203/02—Ores
    • 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

The invention discloses a beneficiation method for recovering tungsten tin sulfide from polymetallic tungsten ore tailings. After the multi-metal tungsten ore tailings are subjected to size mixing, mixing flotation is carried out by taking metal ion-hydroxamic acid complexes as collectors and aluminum sulfate, water glass and sodium fluosilicate compositions as inhibitors to obtain tungsten-tin-sulfur mixed concentrate; the tungsten-tin-sulfur bulk concentrate is subjected to reverse flotation desulfurization by taking oxalic acid as an activating agent, xanthate as a collecting agent and single sodium silicate as an inhibitor, wherein the reverse flotation concentrate is sulfur concentrate, and the tailings are tungsten-tin bulk concentrate. According to the method, primary co-enrichment of sulphide ore, tungsten mineral and cassiterite in the multi-metal tungsten ore tailings is realized based on mixed flotation, the sulphide ore is independently used as sulphide ore concentrate to be efficiently separated through a reverse flotation desulfurization method, and the tungsten ore and the cassiterite are efficiently recovered through tungsten-tin mixed concentrate, so that recycling recovery of the multi-metal tungsten ore tailings is truly realized.

Description

Mineral separation method for recovering tungsten tin sulfide from polymetallic tungsten ore tailings
Technical Field
The invention relates to a recovery method of polymetallic tungsten ore tailings, in particular to a mineral separation method for recovering tungsten tin sulfide from polymetallic tungsten ore tailings, and belongs to the technical field of mineral separation.
Background
The mineral resources are gradually exhausted, the tailings are reselected from the piled tailings of the existing factories, and the valuable metal resources are further obtained from the tailings. At present, a large amount of metal resources including tungsten, tin, sulfur and the like still exist in the multi-metal tungsten ore tailings, and the method comprises the following steps:
black and white tungsten ore: in the existing tungsten mine, no matter single scheelite or black-white tungsten mixed ore, the widely adopted flotation process is a fatty acid method, such as scheelite of Henan Luoyang molybdenum industry group, gansu small willow ditch scheelite Jiangxi shan tungsten mine. Fatty acids have strong capacity for scheelite recovery but poor selectivity, and therefore, a large amount of water glass is often required to be added as gangue mineral inhibitors in the fatty acid flotation process. When the mineral composition is complex, the selectivity of water glass is often poor, and the flotation of tungsten minerals is influenced while gangue minerals such as calcite and fluorite are inhibited, so that tungsten which does not float in the main flow is contained in the tungsten tailings.
Tin resource: in addition, since W, sn has similar differential behaviors and affinities in geochemistry ore-forming (ore-forming geochemistry, geological publishing, 2015, 134-135), a large amount of polymetallic tungsten ores are endowed with cassiterite resources, such as tungsten ores of yellow sand table, persimmon bamboo garden and the like, and cassiterite is not effectively recovered in the existing tungsten ore dressing process and is mainly remained in tungsten tailings. The prior tungsten smelting method is mainly an alkali dissolution method after hydrochloric acid decomposition, and tin in tungsten concentrate enters the leaching solution along with tungsten, so that subsequent separation is difficult, and therefore, according to the prior tungsten concentrate standard YS/T231-2015, the grade of tin in the tungsten concentrate is required to be low to be between 0.15 and 0.50. In recent years, with the development of new tungsten smelting technologies such as a sulfur-phosphorus mixed acid synergistic leaching technology (patent CN 104878223A), an ammonium salt system white tungsten green smelting key technology (patent CN 109439929A) and the like, tin in the tungsten leaching process of tungsten concentrate can enter a slag phase, and high-value utilization is realized. Therefore, the method realizes the co-enrichment recovery of the cassiterite and the tungsten in the polymetallic tungsten ore tailings, and has great significance.
Sulfide ore: the common mineral separation flow of the multi-metal tungsten ore in the prior art comprises the following steps: and (3) magnetic separation iron removal, flotation desulfurization and tungsten flotation, wherein most of the easy-to-float sulphide ores in the full-sulphur flotation are recovered in the beneficiation process. However, part of pyrrhotite and pyrite have poor floatability, and are difficult to fully recover in a conventional full-sulfur flotation section, and particularly when the oxidation degree of ores is high, the floatability is further reduced, so that part of unremoved sulphide ores enter tailings along with ore pulp, and the part of sulphur resources are lost.
The main useful component in most polymetallic tungsten ore tailings is WO 3 The main metal minerals are scheelite, cassiterite, pyrrhotite and pyrite, and the gangue minerals are mainly feldspar, fluorite, quartz, pyroxene, calcite and garnet. Wherein WO 3 0.07-0.25% of S, 2-3% of TFe and 8-12%. Most of the existing polymetallic tungsten ore tailings are piled in a tailing pond, and the comprehensive utilization rate is low. Aiming at the situation, most of ore dressing workers research the bulk utilization and digestion of tailings from the pressure of a tailings pond, and recover nonmetallic minerals such as fluorite, feldspar, quartz and the like, wherein the fluorite is mainly used as a preparation raw material of hydrofluoric acid, and the quartz feldspar is used as an inorganic material in the building material industry. At present, most of the recovery of metal minerals in the tungsten polymetallic mine tailings is concentrated on adopting the same process as a main process to perform tailings reselection, thereby preventing the problems of economic benefit, production cost and the like, and most of the recovery staysIn the laboratory stage, large-scale application is seen.
Disclosure of Invention
Aiming at the defects of the prior art on the method for treating the multi-metal tungsten ore tailings, the invention aims to provide a mineral separation method for recovering tungsten tin sulfide from the multi-metal tungsten ore tailings, which is based on the mixed flotation to realize preliminary co-enrichment of sulfide ore, tungsten ore and cassiterite in the multi-metal tungsten ore tailings, and then the sulfide ore is independently used as sulfide ore concentrate to be efficiently separated by a reverse flotation desulfurization method, and the tungsten ore and the cassiterite are efficiently recovered in a tungsten-tin mixed concentrate, so that the recycling recovery of the multi-metal tungsten ore tailings is truly realized.
In order to achieve the technical aim, the invention provides a mineral separation method for recovering tungsten tin sulfide from polymetallic tungsten ore tailings, which comprises the steps of carrying out mixed flotation on polymetallic tungsten ore tailings by taking a metal ion-hydroxamic acid complex as a collector I and taking an aluminum sulfate, sodium silicate and sodium fluosilicate composition as an inhibitor I after pulp mixing to obtain tungsten tin sulfide bulk concentrate; the tungsten-tin-sulfur bulk concentrate is subjected to reverse flotation desulfurization by taking oxalic acid as an activating agent, xanthate as a collector II and single sodium silicate as an inhibitor II, wherein the concentrate is sulfur concentrate, and the tailings are tungsten-tin bulk concentrate.
According to the technical scheme, according to the characteristics of mineral composition, occurrence state and the like of the polymetallic tungsten ore tailings (main metal minerals are scheelite, cassiterite, pyrrhotite and pyrite, gangue minerals are mainly feldspar, fluorite, quartz, pyroxene, calcite and garnet), under the combined inhibitor action of special aluminum sulfate, water glass and sodium fluosilicate, calcium-containing gangue such as fluorite, calcite and the like and silicate gangue such as garnet, quartz, feldspar and the like can be simultaneously and efficiently inhibited, and metal ion-hydroxamic acid complex is used as a collecting agent, tungsten minerals, cassiterite and sulphide minerals can be simultaneously and efficiently enriched in a mixed concentrate form, oxalic acid is used for activation, xanthate is used as a collecting agent, single water glass is used as an inhibitor for inhibiting black and white tungsten ore and cassiterite, reverse flotation desulfurization is carried out, and tungsten ore and cassiterite are reserved in the tailings, so that the comprehensive recovery of tungsten-tin sulfide in the polymetallic ore tailings is finally realized.
As a preferable scheme, the pulp is mixed to adjust the mass percentage concentration of pulp to be 38-45%, and the pH value is 9.5-10.5. Under the preferable pH condition, the metal ion-hydroxamic acid complex can be used for improving the collection capacity.
As a preferred embodiment, the collector I is a metal ion-hydroxamic acid complex formed by coordination of a hydroxamic acid ligand to a metal ion. The metal ion is Fe 3+ 、Fe 2+ 、Pb 2+ 、Cu 2+ 、Zn 2+ 、Al 3+ 、Mn 2+ 、Ni 2+ Or Ca 2+ The method comprises the steps of carrying out a first treatment on the surface of the Further preferred metal ions are Fe 3+ 、Fe 2+ Or Pb 2+ . The hydroxamic acid ligand is salicylic hydroxamic acid, benzoic hydroxamic acid, naphthyl hydroxamic acid or C 6 ～C 12 Alkyl hydroxamic acids of (a). The molar ratio of the metal ions to the hydroxamic acid ligand is 1:1-16; more preferably 1:1 to 8.
As a preferable scheme, the inhibitor I consists of aluminum sulfate, water glass and sodium fluosilicate according to the mass ratio of 1:2-4:2-4. Under the synergistic effect of three medicaments of aluminum sulfate, water glass and sodium fluosilicate, the aluminum sulfate and the water glass mainly form Al-SiO 3 The colloidal particles have strong selective inhibition capability on calcium-containing gangue minerals such as calcite, fluorite and the like, have small influence on the recovery rate of black and white tungsten ore, cassiterite and sulphide ore, and the sodium fluosilicate is mainly used for selectively inhibiting silicate minerals and dispersing mineral mud to avoid entrainment; in addition, both aluminum sulfate and sodium fluosilicate can provide an acidic environment in aqueous solution, and also contribute to the formation of high-selectivity silicate colloidal particles; the aluminum sulfate has a moderate proportion, and too high of the aluminum sulfate can cause insufficient inhibition capability, while too low of the aluminum sulfate can cause selectivity reduction, and the recovery rate of tungsten-tin minerals is easy to reduce.
As a preferred scheme, the flotation includes one rougher, 2-4 beneficiations and 1-3 sweeps.
As a preferred scheme, the rougher reagent regime of the mixed flotation is: 300-800 g/t of collector I; 200-600 g/t of inhibitor I and 10-50 g/t of foaming agent; the foaming agent is No. 2 oil.
As a preferred scheme, the selection reagent system of the mixed flotation is as follows: inhibitor I100-200 g/t.
As a preferred scheme, the scavenging of the hybrid flotation is blank scavenging, and no medicament is needed.
As a preferred scheme, the reverse flotation comprises one rougher, 1 to 3 beneficiations and 1 to 3 sweeps.
As a more preferable scheme, the rougher reagent system of the reverse flotation is as follows: 100-500 g/t of activator; 300-600 g/t of collector II; 500-3000 g/t of inhibitor II, more preferably 1500-3000 g/t of inhibitor II and 10-50 g/t of foaming agent; the foaming agent is No. 2 oil.
As a more preferred option, the reverse flotation is selected from a blank selection without adding a flotation reagent.
As a more preferable scheme, the scavenging reagent system of the reverse flotation is as follows: 10-20 g/t of foaming agent. No collector is added in the scavenging process.
Compared with the prior art, the technical scheme of the invention has the beneficial technical effects that:
according to the technical scheme, the primary enrichment of sulphide ore, tungsten ore and cassiterite in the polymetallic tungsten ore tailings is realized, the sulphide ore (mainly pyrite and pyrrhotite) is independently used as the sulphur concentrate to be efficiently recovered by a reverse flotation desulfurization method, the sulphur recovery rate can reach about 67%, and the tungsten ore and cassiterite are efficiently recovered by tungsten-tin mixed concentrate to WO 3 The recovery rate can reach about 70 percent, the Sn recovery rate can reach about 45 percent, and the recycling recovery of the polymetallic tungsten ore tailings is truly realized.
The technical scheme of the invention has simple operation and low reagent cost on the dressing method of the polymetallic tungsten ore tailings, is suitable for various polymetallic tungsten ore tailings, and is favorable for large-scale popularization and use.
Drawings
FIG. 1 is a flow chart of the beneficiation process for recovering tungsten tin sulfide from multi-metal tungsten ore tailings.
FIG. 2 is a closed-loop experimental procedure of example 1 and comparative example 1.
FIG. 3 is a closed-loop experimental procedure of example 2.
FIG. 4 is a schematic diagram of the industrial equipment layout of example 2.
Detailed Description
The following specific examples are intended to further illustrate the present invention, but not to limit the scope of the claims.
Example 1
The method is used for treating the Hunan Chenzhou yellow sand apron polymetallic tungsten ore tailings, the mine tungsten ore is single scheelite, the ore feeding concentration is 40 percent, a closed circuit experiment is carried out according to the flow shown in figure 2, the pH value of the tailings is adjusted to 9.5 by sodium carbonate, and a metal ion complex collector (Pb) is added 2+ And salicylic hydroxamic acid with the mass ratio of 1:1) 400g/t,20g/t 2# oil as a foaming agent, and 200g/t (aluminum sulfate 40g/t, water glass 80g/t and sodium fluosilicate 80 g/t) of combined inhibitor are roughed to obtain rough concentrate; 2 times of scavenging blank without adding medicament; the combination inhibitor is adopted for concentration (the total dosage of the medicaments for concentration is 200g/t, each time is 100g/t, the mass ratio of aluminum sulfate, water glass and sodium fluosilicate is 1:2:2), and the tungsten-tin-sulfur mixed concentrate is obtained after the concentration is carried out twice.
Carrying out reverse flotation desulfurization on the tungsten-tin-sulfur mixed concentrate to obtain the tungsten-tin mixed concentrate, wherein the reverse flotation desulfurization comprises primary roughing, secondary concentration and secondary scavenging, wherein 500g/t oxalic acid is used as an activating agent, 3000g/t sodium silicate is used as an inhibitor, 300g/t butyl xanthate is used as a collecting agent, and 20g/t 2# oil is used as a foaming agent; only 10g/t 2# oil foaming agent is added for 2 times of scavenging; no agent was added to the 2 selection blanks. The final index is shown in Table 1, WO can be obtained 3 Overall recovery of 72.58%, overall recovery of Sn of 50.46%, and S recovery of 68.3%.
Table 1 example 1 experimental index
Figure BDA0004121714040000051
Comparative example 1
This comparative example serves as a control with example 1 to compare the effect of aluminum sulfate in a mixed rougher on the flotation process:
the only difference from example 1 is that: the combined inhibitor is water glass and sodium fluosilicate with the mass ratio of 1:1 (200 g/t). Flotation flow and other conditions refer to example 1.
The final index is shown in Table 2, WO 3 The overall recovery rate was only 35.92%, the overall recovery rate of Sn was 19.62%, and the recovery rate of S was 81.68%. The above results indicate that the selectivity of inhibitor I is poor and the recovery rate of tungsten tin is severely affected without the addition of aluminum sulfate.
TABLE 2 Experimental indices of comparative example 1
Figure BDA0004121714040000052
Figure BDA0004121714040000061
Example 2
The multi-metal tungsten tailings of the persimmon bamboo garden in Hunan Chen are treated by the process, the mine is a black-white tungsten symbiotic tungsten mine (the black-white tungsten ratio is about 4:6), the ore feeding concentration is regulated to be 42%, and industrial experiments with daily treatment capacity of 1500t/d (the industrial equipment layout is shown in figure 4) are carried out according to the medicament and the process shown in figure 3.
Adjusting the pH of the tailings to 9.6 by sodium carbonate, and adding a metal ion complex collector (Pb 2+ And naphthalene hydroxamic acid with the mass ratio of 1:1) 450g/t and 25g/t 2# oil as a foaming agent, and combining 300g/t of inhibitor (aluminum sulfate 60g/t, sodium silicate 120g/t and sodium fluosilicate 120 g/t), and roughing to obtain rough concentrate; no medicament is added in the 1-time scavenging blank; the combination inhibitor is adopted for concentration (the total dosage of the medicaments for concentration is 300g/t, each time is 150g/t, the mass ratio of aluminum sulfate, water glass and sodium fluosilicate is 1:2:2), and the tungsten-tin-sulfur mixed concentrate is obtained after the concentration is carried out twice.
The tungsten-tin-sulfur mixed concentrate is subjected to a reverse flotation desulfurization process to obtain the tungsten-tin mixed concentrate, wherein the reverse flotation desulfurization process comprises one roughing, two fine selection and two scavenging, the roughing uses 400g/t oxalic acid as an activating agent, 2400g/t water glass as an inhibitor, and 350g/t butyl xanthate is used as a collector, and 20g/t 2# oil is used as a foaming agent; only 10g/t 2# oil foaming agent is added for 2 times of scavenging; no agent was added to the 2 selection blanks. The final index is shown in Table 2, WO can be obtained 3 An index of 73.93% overall recovery, 58.60% overall recovery of Sn, and 76.96% recovery of S.
Table 2 example 2 experimental index
Product(s) Yield/% WO 3 Grade/% WO 3 Recovery/% Sn grade/% Sn recovery/% S grade/% S recovery rate
Sulphide ore 1.20 0.11 1.12 0.14 1.15 28.23 76.96
Bulk concentrate 0.66 13.22 73.93 12.99 58.60 0.50 0.75
Final tailings 98.14 0.03 24.95 0.06 40.25 0.10 22.29
Feeding ore 100.00 0.12 100.00 0.15 100.00 0.44 100.00

Claims (8)

1. A mineral separation method for recovering tungsten tin sulfide from polymetallic tungsten ore tailings is characterized by comprising the following steps of: after the multi-metal tungsten ore tailings are subjected to size mixing, a metal ion-hydroxamic acid complex is used as a collector I, and a combination of aluminum sulfate, water glass and sodium fluosilicate is used as an inhibitor I, and then mixed flotation is carried out to obtain tungsten-tin-sulfur mixed concentrate; the tungsten-tin-sulfur mixed concentrate is subjected to reverse flotation desulfurization by taking oxalic acid as an activating agent, xanthate as a collector II and single sodium silicate as an inhibitor II, wherein the reverse flotation concentrate is sulfur concentrate, and the tailings are tungsten-tin mixed concentrate.
2. The beneficiation method for recovering tungsten tin sulfide from multi-metal tungsten ore tailings according to claim 1, wherein the beneficiation method comprises the following steps: the pulp is mixed to adjust the mass percentage concentration of pulp to be 38% -45% and the pH value to be 9.5-10.5.
3. The beneficiation method for recovering tungsten tin sulfide from multi-metal tungsten ore tailings according to claim 1, wherein the beneficiation method comprises the following steps: the collector I is a metal ion-hydroxamic acid complex formed by coordination of a hydroxamic acid ligand and a metal ion;
the metal ion is Fe 3+ 、Fe 2+ 、Pb 2+ 、Cu 2+ 、Zn 2+ 、Al 3+ 、Mn 2+ 、Ni 2+ Or Ca 2+ ；
The hydroxamic acid ligand is salicylic hydroxamic acid, benzoic hydroxamic acid, naphthyl hydroxamic acid or C 6 ～C 12 Alkyl hydroxamic acids of (a);
the molar ratio of the metal ions to the hydroxamic acid ligand is 1:1-16.
4. The beneficiation method for recovering tungsten tin sulfide from multi-metal tungsten ore tailings according to claim 1, wherein the beneficiation method comprises the following steps: the inhibitor I consists of aluminum sulfate, sodium silicate and sodium fluosilicate according to the mass ratio of 1:2-4:2-4.
5. A beneficiation process for recovering tungsten tin sulfide from multi-metal tungsten ore tailings according to any one of claims 1 to 4, wherein: the mixed flotation comprises one roughing, 2-4 fine selection and 1-3 scavenging.
6. The beneficiation method for recovering tungsten tin sulfide from multi-metal tungsten ore tailings according to claim 5, wherein the beneficiation method comprises the following steps:
the rougher reagent system of the mixed flotation is as follows: 300-800 g/t of collector I; 200-600 g/t of inhibitor I and 10-50 g/t of foaming agent; the foaming agent is No. 2 oil;
the carefully chosen reagent system of the mixed flotation is as follows: inhibitor I100-200 g/t;
and the scavenging of the mixed floatation is blank scavenging.
7. The beneficiation method for recovering tungsten tin sulfide from multi-metal tungsten ore tailings according to claim 1, wherein the beneficiation method comprises the following steps: the reverse flotation comprises one roughing, 1-3 fine selection and 1-3 scavenging.
8. A beneficiation process to recover tungsten tin sulfide from multi-metal tungsten ore tailings according to claim 1 or 7, wherein:
the rougher reagent system of reverse flotation is as follows: 100-500 g/t of activator; 300-600 g/t of collector II; 500-3000 g/t of inhibitor II and 10-50 g/t of foaming agent; the foaming agent is No. 2 oil;
the selection of the reverse flotation is blank selection;
the scavenging reagent system of reverse flotation is as follows: 10-20 g/t of foaming agent; the foaming agent is No. 2 oil.
CN202310234953.3A 2023-03-13 2023-03-13 Mineral separation method for recovering tungsten tin sulfide from polymetallic tungsten ore tailings Pending CN116328952A (en)

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