CN109569873A - A kind of process recycling lead minerals in the poor zinc Pb-Zn deposits of high lead in advance - Google Patents
A kind of process recycling lead minerals in the poor zinc Pb-Zn deposits of high lead in advance Download PDFInfo
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- CN109569873A CN109569873A CN201811396146.7A CN201811396146A CN109569873A CN 109569873 A CN109569873 A CN 109569873A CN 201811396146 A CN201811396146 A CN 201811396146A CN 109569873 A CN109569873 A CN 109569873A
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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
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
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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
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/02—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation
- B03B5/04—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation on shaking tables
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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
Abstract
The invention belongs to mineral recovery process method and technology fields, and in particular to one kind recycles the process of lead minerals in the poor zinc Pb-Zn deposits of high lead in advance；Using gravity treatment+fast-flotation process, the content of zinc in lead concentrate is reduced, improves the quality of lead concentrate, is that advantageous condition is created in the recycling of next step zinc, which solves the problems, such as the low Pb-Zn deposits object of the high zinc of output lead in lead-zinc ore floatation process.
Description
Technical field
The invention belongs to mineral recovery process method and technology fields, and in particular to one kind recycles the poor zinc Pb-Zn deposits of high lead in advance
The process of middle lead minerals.
Background technique
China's lead reserves are at the forefront in the world, and zinc reserves occupy first place in the world, and the Clarke value of lead is 0.0016%, and zinc is
0.005%, the geological conditions that three kinds of because of metal of lead zinc-silver generate is identical or approximate, so their Chang Gongsheng form lead zinc together
Mineral deposit.Lead-zinc deposit is largely formed in the hydrothermal solution stage, and huge mineral deposit, Pb-Zn separation is commonly formed in especially middle Low Temperature Thermal period
As long as the traditional separation of lead zinc flotation mainly includes following several method using the method for flotation: 1, lead zinc diffeential floatation, this stream
It is higher that journey is suitable for Pb, Zn content, and embedding cloth closely or is not in not bery the embedding cloth of aggregate between Pb-Zn deposits object, when ore grinding easy monomer dissociation
Ore；2, lead zinc mixing-diffeential floatation carries out the bulk flotation of lead, zinc first, is then successively preferentially floated to bulk concentrate
A kind of principle process of choosing, it is suitable for, and Pb, Zn content is lower, and Pb-Zn deposits object symbiosis is close, when ore grinding from gangue mineral
The sulfide come is dissociateed easily at the ore of intergrowth；3, lead zinc Bulk flotation makes the zincblende easily floated and speed phase of swimming first
With galena emersion together, lead and zinc bulk concentrate is then separated, its shortcoming is that be only applicable to floatability poor for lead zinc Bulk flotation
Different biggish ore, and multipurpose device than complete normal flotation；4 lead zinc ramified flotations, are divided into branch's roughing and point speed is selected, entirely
Flow chart branches flotation flowsheet is complex.
Summary of the invention
In order to overcome the above problem, the present invention provides the techniques that one kind recycles lead minerals in the poor zinc Pb-Zn deposits of high lead in advance
Method, the process solve the problems, such as the low Pb-Zn deposits object of the high zinc of output lead in lead-zinc ore floatation process, improve simultaneously
The quality of output lead concentrate is that advantageous condition is created in the recycling of zinc.
A kind of process recycling lead minerals in the poor zinc Pb-Zn deposits of high lead in advance, comprising the following steps:
Step 1: grinding-classification operation；
Different lead-zinc ores, since lead, the granularmetric composition of zinc and occurrence status are different, grinding fineness forms also not phase
Together, raw ore ore grinding is sized mixing to fineness -0.074mm mass percentage content between 45%~60%；
Step 2: table concentration operation；
The ore pulp mixed up is added in gravity treatment stirred tank, water supply start, starts shaking table, direct output silver lead ore concentrate 1, output
Chats and tailing merge become a tailing；
Step 3: regrinding graded operation；
Tailing obtained by step 2 is filtered classification, is added in ball milling and carries out ore grinding, grinding fineness -0.074m quality hundred
Divide than content between 70%~85%, sizes mixing；
Step 4: fast-flotation operation；
Ore pulp in step 3 is poured into flotation device, CaO stirring 5 is added in 28%-38% in the control of flotation pulp concentration
Minute, pH values of pulp is adjusted to 7.5~8.5；ZnSO is added4, dosage 200-400g/t, stirring 5 minutes；SN9 is added﹟As catching
Agent is received, dosage 10-30g/t is stirred 3 minutes；Then MIBC is added as foaming agent, dosage 10-20g/t is stirred 2 minutes；
It is inflated flotation, direct output silver lead ore concentrate 2；
Step 5: diffeential floatation operation；
The resulting tailing of flotation in step 4 is continued into roughing, CaO is added and stirs 5 minutes, adjust pH values of pulp to
9.0-9.5；The ZnSO that mass ratio is 2:1 is added4And Na2SO3, total dosage is 1200-1600g/t, is stirred 5 minutes；Quality is added
Than the SN9 for 1:1﹟With fourth ammonium as collecting agent, total dosage is 20-40g/t, is stirred 3 minutes；Then MIBC is added as blistering
Agent, dosage 20-40g/t are stirred 2 minutes；Then selected air flotation, direct output silver lead ore concentrate 3 are carried out, then is carried out twice
It scans, scans CaO stirring 5 minutes is added for the first time, adjust pH values of pulp to 9.0-9.5；The ZnSO that mass ratio is 2:1 is added4With
Na2SO3, total dosage is 600-800g/t, is stirred 5 minutes；The SN9 that mass ratio is 1:1 is added﹟It is total to use with fourth ammonium as collecting agent
Amount is 10-20g/t, is stirred 3 minutes；It is scanned for the second time again, CaO is added and stirs 5 minutes, adjust pH values of pulp to 9.0-9.5；
The ZnSO that mass ratio is 2:1 is added4And Na2SO3, total dosage is 300-400g/t, is stirred 5 minutes；It is 1:1's that mass ratio, which is added,
SN9﹟With fourth ammonium as collecting agent, total dosage is 5-10g/t, is stirred 3 minutes, output lead chats, that is, tailing.
The invention has the benefit that
1, it can be floated for lead-zinc ore (mineral species of lead are mainly galena, bournonite and geocronite) lead minerals
Property gap it is larger, part lead minerals is easily floating, and piece wheel mine and geocronite are highly prone to inhibit, ore floatation process
In, since the high zinc of lead is low, lead concentrate can be mingled with a large amount of monomer zincblende during floating, and be difficult to press down in rough concentrate refining process
Make the zincblende of this part.The present invention solves problem above, using gravity treatment+fast-flotation process, reduces zinc in lead concentrate
Content, improve the quality of lead concentrate, be that advantageous condition is created in the recycling of next step zinc.
2, operation of the present invention is convenient, and production cost is low.
Detailed description of the invention
Fig. 1 is the flow diagram of present invention process method.
Specific embodiment
Certain Pb-Zn deposits, the ore mineral form based on galena, it is secondary be geocronite, also containing zincblende, mispickel,
Pyrite, metal oxide mainly based on ferrous manganese ore, also contain magnetic iron ore, limonite, bloodstone, and gangue mineral is with quartz
Main, secondary is glassy feldspar, plagioclase, also contains mica, calcite.Raw ore multielement analysis the results are shown in Table 1, spectrum analysis and be shown in Table 2,
Ore mineral composition measurement result is shown in Table 3.
1 raw ore multielement analysis result of table
| Element | Au(g/t) | Ag(g/t) | Cu | Pb | Zn | Fe | S |
| Content (%) | 0.053 | 320.72 | 0.046 | 7.58 | 0.88 | 1.79 | 1.48 |
| Element | As | C | CaO | MgO | Al2O3 | SiO2 | Mn |
| Content (%) | 0.11 | 0.64 | 0.12 | 0.16 | 7.63 | 75.77 | 1.48 |
2 raw ore Spectroscopic analysis results of table
| Element | Si | Fe | Al | Mg | K | Ca | S | Pb |
| Content (%) | 54.7 | 1.22 | 10.70 | 0.206 | 3.42 | 0.44 | 1.71 | 7.41 |
| Element | Ti | Mn | Cu | Zn | As | Rb | Nb | Ag |
| Content (%) | 0.116 | 4.74 | 0.030 | 0.85 | 0.145 | 0.12 | 0.0152 | 0.0321 |
| Element | Sb | F | P | |||||
| Content (%) | 0.809 | 0.58 | 0.0166 |
3 ore mineral relative amount testing result of table
By the ore using conventional diffeential floatation method, test result is shown in Table 4
4 conventional flotation test result of table
As can be seen from the test results, lead concentrate takes away 28.15% zinc, so being caused using conventional diffeential floatation
Zinc is largely lost in lead concentrate, influences lead concentrate quality, in next step can not high efficiente callback zinc mineral since zinc is largely lost.
Embodiment 1
A kind of process recycling lead minerals in the poor zinc Pb-Zn deposits of high lead in advance, comprising the following steps:
Step 1: grinding-classification operation；
Different lead-zinc ores, since lead, the granularmetric composition of zinc and occurrence status are different, grinding fineness forms also not phase
Together, raw ore ore grinding is sized mixing to fineness -0.074mm mass percentage content 50%；
Step 2: table concentration operation；
The ore pulp mixed up is added in gravity treatment stirred tank, water supply start, starts shaking table, direct output silver lead ore concentrate 1, output
Chats and tailing merge become a tailing；
Step 3: regrinding graded operation；
Tailing obtained by step 2 is filtered classification, is added in ball milling and carries out ore grinding, grinding fineness -0.074m quality hundred
Divide than content 70%, sizes mixing；
Step 4: fast-flotation operation；
Ore pulp in step 3 is poured into flotation device, CaO stirring 5 is added 28% in the control of flotation pulp mass concentration
Minute, pH values of pulp is adjusted to 8.0；ZnSO is added4, dosage 200g/t, stirring 5 minutes；SN9 is added﹟As collecting agent, dosage
For 10g/t, stir 3 minutes；Then MIBC is added as foaming agent, dosage 10g/t is stirred 2 minutes；It is inflated flotation, directly
It practices midwifery out silver lead ore concentrate 2；
Step 5: diffeential floatation operation；
The resulting tailing of flotation in step 4 is continued into roughing, CaO is added and stirs 5 minutes, adjust pH values of pulp to
9.0；The ZnSO that mass ratio is 2:1 is added4And Na2SO3, total dosage is 1200g/t, is stirred 5 minutes；It is 1:1's that mass ratio, which is added,
SN9﹟With fourth ammonium as collecting agent, total dosage is 20g/t, is stirred 3 minutes；Then MIBC is added as foaming agent, dosage is
20g/t is stirred 2 minutes；Then selected air flotation, direct output silver lead ore concentrate 3 are carried out, then is scanned twice, for the first time
It scans and CaO stirring 5 minutes is added, adjust pH values of pulp to 9.0；The ZnSO that mass ratio is 2:1 is added4And Na2SO3, total dosage is
600g/t is stirred 5 minutes；The SN9 that mass ratio is 1:1 is added﹟With fourth ammonium as collecting agent, total dosage is 10g/t, stirs 3 points
Clock；It is scanned for the second time again, CaO is added and stirs 5 minutes, adjust pH values of pulp to 9.0；The ZnSO that mass ratio is 2:1 is added4With
Na2SO3, total dosage is 300g/t, is stirred 5 minutes；The SN9 that mass ratio is 1:1 is added﹟With fourth ammonium as collecting agent, total dosage is
5g/t is stirred 3 minutes, output lead chats, that is, tailing.
Test result technical indicator are as follows:
5 embodiment of table, 1 test result
Embodiment 2
A kind of process recycling lead minerals in the poor zinc Pb-Zn deposits of high lead in advance, comprising the following steps:
Step 1: grinding-classification operation；
Different lead-zinc ores, since lead, the granularmetric composition of zinc and occurrence status are different, grinding fineness forms also not phase
Together, raw ore ore grinding is sized mixing to fineness -0.074mm mass percentage content 45%；
Step 2: table concentration operation；
The ore pulp mixed up is added in gravity treatment stirred tank, water supply start, starts shaking table, direct output silver lead ore concentrate 1, output
Chats and tailing merge become a tailing；
Step 3: regrinding graded operation；
Tailing obtained by step 2 is filtered classification, is added in ball milling and carries out ore grinding, grinding fineness -0.074m quality hundred
Divide than content 80%, sizes mixing；
Step 4: fast-flotation operation；
Ore pulp in step 3 is poured into flotation device, CaO stirring 5 is added 33% in the control of flotation pulp mass concentration
Minute, pH values of pulp is adjusted to 8.5；ZnSO is added4, dosage 300g/t, stirring 5 minutes；SN9 is added﹟As collecting agent, dosage
For 15g/t, stir 3 minutes；Then MIBC is added as foaming agent, dosage 15g/t is stirred 2 minutes；It is inflated flotation, directly
It practices midwifery out silver lead ore concentrate 2；
Step 5: diffeential floatation operation；
The resulting tailing of flotation in step 4 is continued into roughing, CaO is added and stirs 5 minutes, adjust pH values of pulp to
9.2；The ZnSO that mass ratio is 2:1 is added4And Na2SO3, total dosage is 1350g/t, is stirred 5 minutes；It is 1:1's that mass ratio, which is added,
SN9﹟With fourth ammonium as collecting agent, total dosage is 30g/t, is stirred 3 minutes；Then MIBC is added as foaming agent, dosage is
25g/t is stirred 2 minutes；Then selected air flotation, direct output silver lead ore concentrate 3 are carried out, then is scanned twice, for the first time
It scans and CaO stirring 5 minutes is added, adjust pH values of pulp to 9.2；The ZnSO that mass ratio is 2:1 is added4And Na2SO3, total dosage is
675g/t is stirred 5 minutes；The SN9 that mass ratio is 1:1 is added﹟With fourth ammonium as collecting agent, total dosage is 15g/t, stirs 3 points
Clock；It is scanned for the second time again, CaO is added and stirs 5 minutes, adjust pH values of pulp to 9.2；The ZnSO that mass ratio is 2:1 is added4With
Na2SO3, total dosage is 337.5g/t, is stirred 5 minutes；The SN9 that mass ratio is 1:1 is added﹟With fourth ammonium as collecting agent, total dosage
For 7.5g/t, stir 3 minutes, output lead chats, that is, tailing.
Test result technical indicator are as follows:
6 embodiment of table, 2 test result
Embodiment 3
A kind of process recycling lead minerals in the poor zinc Pb-Zn deposits of high lead in advance, comprising the following steps:
Step 1: grinding-classification operation；
Different lead-zinc ores, since lead, the granularmetric composition of zinc and occurrence status are different, grinding fineness forms also not phase
Together, raw ore ore grinding is sized mixing to fineness -0.074mm mass percentage content 60%；
Step 2: table concentration operation；
The ore pulp mixed up is added in gravity treatment stirred tank, water supply start, starts shaking table, direct output silver lead ore concentrate 1, output
Chats and tailing merge become a tailing；
Step 3: regrinding graded operation；
Tailing obtained by step 2 is filtered classification, is added in ball milling and carries out ore grinding, grinding fineness -0.074m quality hundred
Divide than content 85%, sizes mixing；
Step 4: fast-flotation operation；
Ore pulp in step 3 is poured into flotation device, CaO stirring 5 is added 38% in the control of flotation pulp mass concentration
Minute, pH values of pulp is adjusted to 7.5；ZnSO is added4, dosage 400g/t, stirring 5 minutes；SN9 is added﹟As collecting agent, dosage
For 30g/t, stir 3 minutes；Then MIBC is added as foaming agent, dosage 20g/t is stirred 2 minutes；It is inflated flotation, directly
It practices midwifery out silver lead ore concentrate 2；
Step 5: diffeential floatation operation；
The resulting tailing of flotation in step 4 is continued into roughing, CaO is added and stirs 5 minutes, adjust pH values of pulp to
9.5；The ZnSO that mass ratio is 2:1 is added4And Na2SO3, total dosage is 1600g/t, is stirred 5 minutes；It is 1:1's that mass ratio, which is added,
SN9﹟With fourth ammonium as collecting agent, total dosage is 40g/t, is stirred 3 minutes；Then MIBC is added as foaming agent, dosage is
30g/t is stirred 2 minutes；Then selected air flotation, direct output silver lead ore concentrate 3 are carried out, then is scanned twice, for the first time
It scans and CaO stirring 5 minutes is added, adjust pH values of pulp to 9.5；The ZnSO that mass ratio is 2:1 is added4And Na2SO3, total dosage is
800g/t is stirred 5 minutes；The SN9 that mass ratio is 1:1 is added﹟With fourth ammonium as collecting agent, total dosage is 20g/t, stirs 3 points
Clock；It is scanned for the second time again, CaO is added and stirs 5 minutes, adjust pH values of pulp to 9.5；The ZnSO that mass ratio is 2:1 is added4With
Na2SO3, total dosage is 400g/t, is stirred 5 minutes；The SN9 that mass ratio is 1:1 is added﹟With fourth ammonium as collecting agent, total dosage is
10g/t is stirred 3 minutes, output lead chats, that is, tailing.
Test result technical indicator are as follows:
7 embodiment of table, 3 test result
3 embodiment indexs are preferable, and the lead concentrate rate of recovery improves, and zinc mineral content is greatly lowered in lead concentrate,
Lead concentrate quality is not only increased, and is created favorable conditions for next step high efficiente callback zinc.
Gravity treatment is also known as gravity separation, refer to using be sorted relative density between mineral grain, granularity, the difference of shape and its
The difference of movement rate and direction in the medium is allowed to the beneficiation method being separated from each other, compared with other beneficiation methods, gravity treatment tool
Have that processing capacity is big, sort particle size range wide, device structure is relatively simple, does not consume that valuable production material, operating cost are low, do not have
The advantages that pollution, therefore gravity treatment is widely used in the ore dressing of tungsten, tin ore.In the choosing of ferrous metal, rare metal, precious metal ore
Not, lead exists, so the ore dressing of Pb-Zn deposits is based on floatation generally with zinc association mostly in the form of Pb-Zn deposits.
Fast-flotation technique is the new process that developed in recent years, is a kind of dissociation feature for making full use of mineral
With floatability difference, in the case where weak collecting, weak inhibition, the process that the preferable target minreal of floatability recycles in advance,
Because the floatability of copper is preferable, hence it is evident that be better than other mineral, so fast-flotation is widely incorporated in sorting for copper mine.
Claims (1)
1. the process that one kind recycles lead minerals in the poor zinc Pb-Zn deposits of high lead in advance, it is characterised in that the following steps are included:
Step 1: grinding-classification operation；
Different lead-zinc ores, since lead, the granularmetric composition of zinc and occurrence status are different, grinding fineness composition is not also identical, former
Mine ore grinding between 45%~60%, is sized mixing to fineness -0.074mm mass percentage content；
Step 2: table concentration operation；
The ore pulp mixed up is added in gravity treatment stirred tank, water supply start, starting shaking table, direct output silver lead ore concentrate 1, in output
Mine and tailing, which merge, becomes a tailing；
Step 3: regrinding graded operation；
Tailing obtained by step 2 is filtered classification, is added in ball milling and carries out ore grinding, grinding fineness -0.074m mass percent
Content is sized mixing between 70%~85%；
Step 4: fast-flotation operation；
Ore pulp in step 3 is poured into flotation device, the control of flotation pulp concentration is added CaO and stirs 5 points in 28%-38%
Clock adjusts pH values of pulp to 7.5~8.5；ZnSO is added4, dosage 200-400g/t, stirring 5 minutes；SN9 is added﹟As collecting
Agent, dosage 10-30g/t are stirred 3 minutes；Then MIBC is added as foaming agent, dosage 10-20g/t is stirred 2 minutes；Into
Row air flotation, direct output silver lead ore concentrate 2；
Step 5: diffeential floatation operation；
The resulting tailing of flotation in step 4 is continued into roughing, CaO is added and stirs 5 minutes, adjusts pH values of pulp to 9.0-
9.5；The ZnSO that mass ratio is 2:1 is added4And Na2SO3, total dosage is 1200-1600g/t, is stirred 5 minutes；Mass ratio, which is added, is
The SN9 of 1:1﹟With fourth ammonium as collecting agent, total dosage is 20-40g/t, is stirred 3 minutes；Then MIBC is added as foaming agent,
Dosage is 20-40g/t, is stirred 2 minutes；Then selected air flotation, direct output silver lead ore concentrate 3 are carried out, then is swept twice
Choosing scans CaO stirring 5 minutes is added for the first time, adjusts pH values of pulp to 9.0-9.5；The ZnSO that mass ratio is 2:1 is added4With
Na2SO3, total dosage is 600-800g/t, is stirred 5 minutes；The SN9 that mass ratio is 1:1 is added﹟It is total to use with fourth ammonium as collecting agent
Amount is 10-20g/t, is stirred 3 minutes；It is scanned for the second time again, CaO is added and stirs 5 minutes, adjust pH values of pulp to 9.0-9.5；
The ZnSO that mass ratio is 2:1 is added4And Na2SO3, total dosage is 300-400g/t, is stirred 5 minutes；It is 1:1's that mass ratio, which is added,
SN9﹟With fourth ammonium as collecting agent, total dosage is 5-10g/t, is stirred 3 minutes, output lead chats, that is, tailing.
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| CN114029158A (en) * | 2021-11-11 | 2022-02-11 | 长春黄金研究院有限公司 | Beneficiation process for polymetallic ores containing gold, silver, lead and zinc |
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