CN103817013A - Lead zinc ore flotation depressing agent composition and lead zinc ore flotation method - Google Patents
Lead zinc ore flotation depressing agent composition and lead zinc ore flotation method Download PDFInfo
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- CN103817013A CN103817013A CN201410061650.7A CN201410061650A CN103817013A CN 103817013 A CN103817013 A CN 103817013A CN 201410061650 A CN201410061650 A CN 201410061650A CN 103817013 A CN103817013 A CN 103817013A
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- zinc
- lead
- floating
- plumbous
- concentrate
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Abstract
The invention provides a lead zinc ore flotation depressing agent composition and a lead zinc ore flotation method. The problem that the grade of zinc in lead concentrate is high is solved, the zinc recovery rate is improved, meanwhile, the consumption of flotation reagents needed in the method is low, and cost is greatly saved. In addition, the depressing agent composition restraining zinc floating is good in zinc retraining effect, nontoxic, free of time limiting performance and wide in raw material source.
Description
Technical field
The present invention relates to technique of preparing field, relate in particular to a kind of lead-zinc ore floating inhibitor combination and plumbous zinc method for floating.
Background technology
Plumbous zinc is one of metal early of extracting from lead-zinc ore of the mankind, and in plumbous zinc ore, plumbing mineral have 11 kinds, and zinc industrial mineral has 6 kinds, the most important with galena, zincblende; The chemical formula of galena is PbS, and crystal structure is isometric system, and sulphion becomes cubic closest packing, and lead ion is filled in all octahedral interstices; The chemical formula of zincblende is ZnS, and crystal structure is isometric system, and Zn ion distribution is in angle top and all Mian center of structure cell, and S is arranged in the center of four small cubes of eight small cubes that structure cell is divided into.
In the flotation of plumbous zinc ore, usually by adding plumbous collecting agent and inhibition zinc floating inhibitor or inhibitor combination to come separation of lead breeze and zinc ore powder.At present, conventional inhibitor or inhibitor combination mainly contain: (1) zinc sulfate and lime are made inhibitor combination, and its cardinal principle is mineral hydrophily to be strengthened reach the object that suppresses zinc floating, and zinc sulfate can ionize out Zn in solution
2+and SO
4 2-, Zn
2+hydrolysis produces Zn (OH)
2+, in alkaline medium, obtain HZnO
-and ZnO
2 2-, they are adsorbed in mineral surfaces, strengthen mineral surfaces hydrophily, but the action effect of said composition are not obvious, and production target can not reach requirement, and causes the consumption of related agents large; (2) zinc sulfate and cyanide are made inhibitor combination, and cyanide is mainly Cymag and potassium cyanide, also has cyanogas; Its cardinal principle is that cyanide is the salt that strong base weak acid generates, it is hydrolyzed in ore pulp, generate HCN and CN-, combine use with zinc sulfate, generate the sediment of zinc, thereby suppress the floating of zinc in plumbous district floatation process, can strengthen the inhibitory action to zincblende, be specially at cyanide: when the mass ratio of zinc sulfate is 1:2.5, CN-and Zn
2+form colloid Zn (CN)
2precipitate, suppressed the floating of zinc, but cyanide has severe toxicity, and the action effect of said composition is not good; (3) sulfurous acid, sulphite or SO
2gas is made inhibitor: sulfurous acid, sulphite or SO
2as inhibitor, rising inhibiting is HSO
3 -, need to, in alkalescent ore pulp, just can play the effect of inhibition, and sulphite in ore pulp, be easy to lost efficacy, inhibitory action is sometimes sex-limited; Therefore, seek a kind of low toxicity, without time sex-limited and inhibition zinc that inhibition is good floating inhibitor or inhibitor combination, and then in floatation process, reduce the grade of zinc in lead concentrate, be the active demand of plumbous zinc ore Mineral Processing Enterprises.
Summary of the invention
In view of this, technical problem to be solved by this invention is to provide a kind of lead-zinc ore floating inhibitor combination and lead-zinc ore floating method, and in the lead concentrate that method for floating provided by the invention obtains, zinc grade is low, and the required reagent consumption of flotation is low.
The invention provides the inhibitor combination that suppresses zinc floating in a kind of lead-zinc ore floating, comprising: zinc sulfate and sodium pyrosulfite.
Preferably, the mass ratio of described zinc sulfate and described sodium pyrosulfite is (0.025～0.900): (0.006～0.800).
Preferably, described inhibitor combination also comprises vulcanized sodium.
The present invention also provides a kind of lead-zinc ore floating method, comprising:
By the inhibitor combination of levigate lead zine ores, plumbous collecting agent and inhibition zinc floating, mix, flotation, obtains lead concentrate;
The inhibitor combination of described inhibition zinc floating comprises: zinc sulfate and sodium pyrosulfite.
Preferably, described inhibitor combination also comprises vulcanized sodium.
Preferably, the mass ratio of described zinc sulfate and described sodium pyrosulfite is (0.025～0.900): (0.006～0.800).
Preferably, the mass ratio of the inhibitor combination of described levigate lead zine ores and described inhibition zinc floating is 1:(0.150 × 10
-3～1.150 × 10
-3).
Preferably, described plumbous collecting agent comprises a kind of in black powder and xanthate or two several.
Preferably, after described step, also comprise:
By described lead concentrate and zinc inhibitor mixed, flotation, obtains selected lead concentrate.
Preferably, described zinc inhibitor is one or more in zinc sulfate, lime, vulcanized sodium and sodium pyrosulfite.
Compared with prior art, the invention provides a kind of lead-zinc ore floating inhibitor combination and lead-zinc ore floating method, the present invention is by by the composition of zinc sulfate and sodium pyrosulfite and levigate lead zine ores bulk flotation, the hydrophily of zinc ore is strengthened, and then suppress the floating of zinc ore, solve zinc problem of high grade in lead concentrate, improved the rate of recovery of zinc simultaneously; Experimental result shows, the lead concentrate prepared by method provided by the invention is leaded 50.28%, containing zinc 6.09%, and meanwhile, the required floating agent consumption of method provided by the invention is little, has greatly saved cost; In addition, it is effective that the inhibitor combination of inhibition zinc provided by the invention floating not only presses down zinc, and nontoxic, without time sex-limited and raw material sources are extensive.
The specific embodiment
The invention provides the inhibitor combination that suppresses zinc floating in a kind of lead-zinc ore floating, comprising: zinc sulfate and sodium pyrosulfite.
Wherein, the mass ratio of described zinc sulfate and described sodium pyrosulfite is preferably (0.025～0.900): (0.006～0.800), more preferably (0.100～0.800): (0.016～0.600), most preferably is (0.150～0.700): (0.026～0.600); In order to suppress fully the floating of zinc ore in lead-zinc ore floating, the preferred described inhibitor combination of the present invention also comprises vulcanized sodium; The mass ratio of described zinc sulfate and vulcanized sodium is preferably (0.025～0.900): (0～0.500), more preferably (0.100～0.800): (0.010～0.300), most preferably is (0.150～0.700): (0.015～0.200).
The present invention also provides a kind of lead-zinc ore floating method, comprising:
The inhibitor combination of levigate raw ore, plumbous collecting agent and inhibition zinc floating is mixed, and flotation, obtains lead concentrate;
The inhibitor combination of described inhibition zinc floating comprises: zinc sulfate and sodium pyrosulfite.
According to the present invention, first levigate raw ore is added water and sized mixing, then add plumbous collecting agent and suppress the inhibitor combination that zinc floats, mix, flotation, obtains lead concentrate, and the inhibitor combination of described inhibition zinc floating comprises: zinc sulfate and sodium pyrosulfite; The mass ratio of the inhibitor combination of described levigate raw ore and described inhibition zinc floating is preferably 1:(0.150 × 10
-3～1.150 × 10
-3), more preferably 1:(0.250 × 10
-3～1.050 × 10
-3); Concrete, the mass ratio of described levigate raw ore and described zinc sulfate is preferably 1:(0.100 × 10
-3～0.750 × 10
-3); The mass ratio of described levigate raw ore and described sodium pyrosulfite is preferably 1:(0.050 × 10
-3～0.350 × 10
-3); Described zinc sulfate in the inhibitor combination of described inhibition zinc floating and the mass ratio of described sodium pyrosulfite are preferably (0.025～0.900): (0.006～0.800), more preferably (0.100～0.800): (0.016～0.600), most preferably is (0.150～0.700): (0.026～0.600); In order to suppress fully the floating of zinc ore in lead-zinc ore floating, the preferred described inhibitor combination of the present invention also comprises vulcanized sodium; The mass ratio of described zinc sulfate and vulcanized sodium is preferably (0.025～0.900): (0～0.500), more preferably (0.100～0.800): (0.010～0.300), most preferably is (0.150～0.700): (0.015～0.200); Concrete, the inhibitor combination of inhibition zinc floating of the present invention is a kind of deactivators for the zinc mineral of activated by copper ions, copper ion in its complexing ore pulp, stop copper ion at plumbous zinc mineral adsorption, the region of activation that makes zinc mineral surface lose copper absorption and to form and then generate one deck hydrophilic colloid film, and then suppressed the floating of zinc mineral.The mass ratio of described plumbous collecting agent and lead zine ores is (0.05 × 10
-3～0.5 × 10
-3): 1; Described plumbous collecting agent is preferably black powder and xanthate, and described black powder is preferably 25# black powder, and described xanthate is preferably one or both in ethyl xanthogenate and butyl xanthate; Grade plumbous in described lead zine ores is preferably 1.0%～3.0%; In described lead zine ores, the grade of zinc is preferably 1.5%～4.0%; The pH value of the solution of described mixing is preferably more than 7, and more preferably 9～12; The time of described flotation can determine according to the situation of actual flotation, is preferably 3～15 minutes.
For plumbous zinc ore slurry can fully be contacted with zinc inhibitor with plumbous collecting agent, the present invention preferably adds plumbous agitator by plumbous zinc ore slurry, and under agitation adds plumbous collecting agent and suppress the inhibitor combination that zinc floats; For the lead ore in the lead zine ores that makes to size mixing fully separates with zinc ore, the present invention preferably also adds assistant agent as activator copper sulphate, and foaming agent is one or more in 2# flotation oil and RB series, and described foaming agent is preferably 2# flotation oil and RB-7.
Lower for what zinc content in described lead concentrate was fallen, can the lead concentrate obtaining is again selected, the present invention is preferably by described lead concentrate and zinc inhibitor mixed, and flotation, obtains selected lead concentrate; The present invention adds water lead concentrate to size mixing, and then adds zinc inhibitor, mixes, and flotation, obtains selected lead concentrate; The mass ratio of described lead concentrate and described zinc inhibitor is 1:(0.150 × 10
-3～1.150 × 10
-3), described zinc inhibitor is preferably one or more in zinc sulfate, lime, vulcanized sodium and sodium pyrosulfite; The selection of described zinc inhibitor, can determine according to the content of zinc in lead concentrate and to the grade requirement of lead concentrate, as being the composition of zinc sulfate and lime or inhibitor combination zinc sulfate, vulcanized sodium and sodium pyrosulfite for inhibition zinc floating provided by the invention; The pH value of the solution of described mixing is preferably more than 7, and more preferably 9～12; The time of described flotation can determine according to the situation of actual flotation, is preferably 3～15 minutes; The present invention does not have specific (special) requirements to selected number of times yet, can be according to the requirement of lead concentrate quality is selected to selected number of times, as: can, for more than once, twice or twice, consider economic cause, preferably carry out selected twice.
The invention provides a kind of lead-zinc ore floating inhibitor combination and lead-zinc ore floating method, the present invention is by by the composition of zinc sulfate and sodium pyrosulfite and levigate lead zine ores bulk flotation, the hydrophily of zinc ore is strengthened, and then suppressed the floating of zinc ore, solve zinc problem of high grade in lead concentrate; Meanwhile, the required floating agent consumption of method provided by the invention is little, has greatly saved cost; In addition, it is effective that the inhibitor combination of inhibition zinc provided by the invention floating not only presses down zinc, and nontoxic, without time sex-limited and raw material sources are extensive.
In order further to understand the present invention, below in conjunction with embodiment, a kind of lead-zinc ore floating inhibitor combination provided by the invention and lead-zinc ore floating method are described in detail.
Embodiment 1～11
The technological process of plumbous district's flotation is specially:
Levigate raw ore is added water to size mixing and add plumbous agitator, then regulate pH to 9～12, add plumbous collecting agent 25# black powder, ethyl xanthogenate and butyl xanthate and suppress the inhibitor combination vulcanized sodium of zinc floating, zinc sulfate and sodium pyrosulfite carry out flotation, obtain lead concentrate.
Lead concentrate is added water and sized mixing, then regulate pH to 9～12, add zinc inhibitor zinc sulfate and lime to carry out flotation, obtain selected lead concentrate.
Selected lead concentrate is added water and sized mixing, then regulate pH to 9～12, add the inhibitor combination zinc sulfate, sodium pyrosulfite and the vulcanized sodium mixing that suppress zinc floating to carry out flotation, obtain again selected lead concentrate.
The consumption of the required each medicament of flotation of the present invention is in table 1, and table 1 is the consumption of required each medicament of raw ore per ton in embodiment 1～11 floatation process provided by the invention;
The addition of raw ore of the present invention is in table 2, table 2 be raw ore in embodiment 1～11 provided by the invention the moon treating capacity and raw ore in the grade of plumbous, zinc and sulphur;
In the monthly output of described selected lead concentrate again and again selected lead concentrate, the content of each component and the rate of recovery be in table 3, and table 3 is plumbous in the selected lead concentrate again of the embodiment of the present invention 1～11 preparation, zinc and the quality percentage composition of sulphur and the rate of recovery of lead, zinc and sulphur;
That the present invention also provides is plumbous in the zinc concentrate that adopts method provided by the invention to carry out obtaining after plumbous zinc separation, sulphur concentrate and tailings, zinc and the quality percentage composition of sulphur and the rate of recovery of lead, zinc and sulphur, result is referring to table 4, and table 4 is plumbous in the zinc concentrate that adopts method of the present invention to carry out to obtain after plumbous zinc separation, sulphur concentrate and tailings, zinc and the quality percentage composition of sulphur and the rate of recovery of lead, zinc and sulphur.The consumption of required each medicament of raw ore per ton in table 1 embodiment 1～11 floatation process provided by the invention
（kg/t）
Table 2 be raw ore in embodiment 1～11 provided by the invention the moon treating capacity and raw ore in the grade of plumbous, zinc and sulphur
Plumbous in the selected lead concentrate again of table 3 embodiment of the present invention 1～11 preparation, zinc and the quality percentage composition of sulphur and the rate of recovery of lead, zinc and sulphur
That table 4 adopts is plumbous in zinc concentrate that method of the present invention carries out obtaining after plumbous zinc separation, sulphur concentrate and tailings, zinc and the quality percentage composition of sulphur and the rate of recovery of lead, zinc and sulphur
Comparative example 1～8
Levigate raw ore is added water to size mixing adds plumbous agitator, then regulates pH to 9～12, adds plumbous collecting agent 25# black powder, ethyl xanthogenate and butyl xanthate and zinc inhibitor zinc sulfate and lime to carry out flotation, obtains lead concentrate.
Lead concentrate is added water and sized mixing, then regulate pH to 9～12, add zinc inhibitor zinc sulfate and lime to carry out flotation, obtain selected lead concentrate.
Selected lead concentrate is added water and sized mixing, then regulate pH to 9～12, add zinc inhibitor zinc sulfate and lime to mix and carry out flotation, obtain again selected lead concentrate.
The consumption of the required each medicament of flotation of the present invention is in table 5, and table 5 is the consumption of required each medicament of raw ore per ton in comparative example 1～8 floatation process provided by the invention;
The addition of raw ore of the present invention is in table 6, table 6 be raw ore in comparative example 1～8 provided by the invention the moon treating capacity and raw ore in the grade of plumbous, zinc and sulphur;
In the monthly output of described selected lead concentrate again and again selected lead concentrate, the content of each component and the rate of recovery be in table 7, table 7 is comparative example 1～8 preparation of the present invention plumbous in selected lead concentrate, zinc and the quality percentage composition of sulphur and the rate of recovery of lead, zinc and sulphur again;
That the present invention also provides is plumbous in zinc concentrate that the method that adopts comparative example to provide carries out obtaining after plumbous zinc separation, sulphur concentrate and tailings, zinc and the quality percentage composition of sulphur and the rate of recovery of lead, zinc and sulphur, result is referring to table 8, plumbous in zinc concentrate that table 8 carries out obtaining after plumbous zinc separation for the method that adopts comparative example to provide, sulphur concentrate and tailings, zinc and the quality percentage composition of sulphur and the rate of recovery of lead, zinc and sulphur.
The consumption of required each medicament of raw ore per ton in table 5 comparative example 1～8 floatation process provided by the invention
（kg/t）
In table 6 comparative example 1～8 provided by the invention raw ore the moon treating capacity and raw ore in the grade of plumbous, zinc and sulphur
Plumbous in the selected lead concentrate again of table 7 comparative example of the present invention 1～8 preparation, zinc and the quality percentage composition of sulphur and the rate of recovery of lead, zinc and sulphur
That table 8 adopts is plumbous in zinc concentrate that method that comparative example provides carries out obtaining after plumbous zinc separation, sulphur concentrate and tailings, zinc and the quality percentage composition of sulphur and the rate of recovery of lead, zinc and sulphur
Interpretation of result:
Known with the contrast of table 5 by table 1, adopt after the inhibitor combination of inhibition zinc floating provided by the invention, in plumbous district's flotation, the consumption of the required medicament of raw ore per ton all has decline, concrete, copper sulphate is reduced to 0.233kg/t by 0.286kg/t, zinc sulfate is reduced to 0.440kg/t by 0.480kg/t, ethyl xanthogenate is reduced to 0.128kg/t by 0.169kg/t, butyl xanthate is reduced to 0.118kg/t by 0.148kg/t, lime is reduced to 7.225kg/t by 7.581kg/t, and TK-8+25# black powder is reduced to 0.103kg/t by 0.184kg/t.
Known with the contrast of table 7 and the contrast of table 4 and table 8 by table 3:
Before the inhibitor combination that does not use inhibition zinc provided by the invention to float, the comprehensive technical indexes of processing the selected lead concentrate again that 26145 tons of lead-zinc ores obtain for 8 months is as follows: again selected lead concentrate leaded 55.72%, containing zinc 5.09%, lead recovery 90.04%, zinc is loss late 5.33% in again selected lead concentrate, zinc recovery 87.89%.
Using after the inhibitor combination of inhibition zinc floating provided by the invention, the comprehensive technical indexes of processing the selected lead concentrate again that 34593 tons of lead-zinc ores obtain for 11 months is as follows: again selected lead concentrate leaded 52.30%, containing zinc 3.87%, lead recovery 90.53%, zinc is loss late 4.91% in again selected lead concentrate, zinc recovery 88.84%.
Therefore, use the inhibitor combination Xuan Qian district of inhibition zinc provided by the invention floating to carry out flotation, obviously reduced again the zinc content in selected lead concentrate, and reduce the loss late of zinc in Liao Qian district floatation process, also improved the plumbous rate of recovery simultaneously.
In sum, adopt the inhibitor combination of inhibition zinc floating provided by the invention to carry out after the flotation of plumbous district, not only reduce the consumption of floating agent in Liao Qian district floatation process, and then reduce production cost, but also reduce again the zinc content in selected lead concentrate, reduce the loss late of zinc in again selected lead concentrate, improved the rate of recovery of plumbous zinc.
The explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of the claims in the present invention.
Claims (10)
1. an inhibitor combination that suppresses zinc floating in lead-zinc ore floating, comprising: zinc sulfate and sodium pyrosulfite.
2. composition according to claim 1, is characterized in that, the mass ratio of described zinc sulfate and described sodium pyrosulfite is (0.025～0.900): (0.006～0.800).
3. composition according to claim 1, is characterized in that, described inhibitor combination also comprises vulcanized sodium.
4. a lead-zinc ore floating method, comprising:
The inhibitor combination of levigate lead zine ores, plumbous collecting agent and inhibition zinc floating is mixed, and flotation, obtains lead concentrate;
The inhibitor combination of described inhibition zinc floating comprises: zinc sulfate and sodium pyrosulfite.
5. method according to claim 4, is characterized in that, described inhibitor combination also comprises vulcanized sodium.
6. method according to claim 4, is characterized in that, the mass ratio of described zinc sulfate and described sodium pyrosulfite is (0.025～0.900): (0.006～0.800).
7. method according to claim 4, is characterized in that, the mass ratio of the inhibitor combination of described levigate lead zine ores and described inhibition zinc floating is 1:(0.150 × 10
-3～1.150 × 10
-3).
8. method according to claim 4, is characterized in that, described plumbous collecting agent comprises one or both in black powder and xanthate.
9. method according to claim 4, is characterized in that, after described step, also comprises:
By described lead concentrate and zinc inhibitor mixed, flotation, obtains selected lead concentrate.
10. method according to claim 9, is characterized in that, described zinc inhibitor is one or more in zinc sulfate, lime, vulcanized sodium and sodium pyrosulfite.
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| CN105289851A (en) * | 2015-11-27 | 2016-02-03 | 杭州鑫磊矿业有限公司 | Production technology for lead and zinc floatation mineral powder |
| CN105413878A (en) * | 2015-11-30 | 2016-03-23 | 广西大学 | Preparing method for lead and zinc flotation separation inhibitor |
| CN107774455A (en) * | 2017-10-25 | 2018-03-09 | 湖南水口山有色金属集团有限公司 | A kind of Pb-Zn deposits trithio presses down zinc mineral processing production method |
| CN108554618A (en) * | 2018-04-26 | 2018-09-21 | 昆明理工大学 | A kind of beneficiation method of copper/lead/zinc ore |
| CN111558470A (en) * | 2020-04-28 | 2020-08-21 | 西北矿冶研究院 | Combined regulator for lead-zinc ore flotation |
| CN112827659A (en) * | 2021-01-03 | 2021-05-25 | 中南大学 | Reagent and method for selective flotation separation of galena and sphalerite |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105289851A (en) * | 2015-11-27 | 2016-02-03 | 杭州鑫磊矿业有限公司 | Production technology for lead and zinc floatation mineral powder |
| CN105413878A (en) * | 2015-11-30 | 2016-03-23 | 广西大学 | Preparing method for lead and zinc flotation separation inhibitor |
| CN107774455A (en) * | 2017-10-25 | 2018-03-09 | 湖南水口山有色金属集团有限公司 | A kind of Pb-Zn deposits trithio presses down zinc mineral processing production method |
| CN108554618A (en) * | 2018-04-26 | 2018-09-21 | 昆明理工大学 | A kind of beneficiation method of copper/lead/zinc ore |
| CN111558470A (en) * | 2020-04-28 | 2020-08-21 | 西北矿冶研究院 | Combined regulator for lead-zinc ore flotation |
| CN112827659A (en) * | 2021-01-03 | 2021-05-25 | 中南大学 | Reagent and method for selective flotation separation of galena and sphalerite |
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| Publication number | Publication date |
|---|---|
| CN103817013B (en) | 2017-05-31 |
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