CN103909020A - Flotation separation inhibitor and separation method of galena, pyrite and sphalerite - Google Patents
Flotation separation inhibitor and separation method of galena, pyrite and sphalerite Download PDFInfo
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- CN103909020A CN103909020A CN201410138854.6A CN201410138854A CN103909020A CN 103909020 A CN103909020 A CN 103909020A CN 201410138854 A CN201410138854 A CN 201410138854A CN 103909020 A CN103909020 A CN 103909020A
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Abstract
The invention discloses a flotation separation inhibitor and separation method of galena, pyrite and sphalerite, and belongs to the technical field of mineral processing. The method includes adopting raw ores of sulfide lead-zinc mine as raw material, and adding SDSN (dimethyl dithiocarbamate : 2-(methylthio)ethylamine = 1-3:1)to serve as inhibitor of the pyrite and the sphalerite so as to perform lead and zinc sulphur flotation separation after the raw ores are grinded. Compared with an existing lead and zinc sulphur separation technology, the composite inhibitor SDSN has the advantages that selectivities of the pyrite and the sphalerite are high, inhibiting capability is high, usage is fewer, and adding is facilitated. The the pyrite and the sphalerite can be inhibited well, efficient separation of the galena and the zinc sulphur is implemented, the problems that according to the traditional lime or cyanide method, the recovery rate of associated gold, silver and other precious metals in the lead-zinc sulfide mine is low and ecological environment is seriously damaged are overcome, and an efficient and environment-friendly flotation separation method is provided for complex sulfide lead-zinc mine separation.
Description
Technical field
The present invention relates to technique of preparing field, relates in particular to lead zinc sulfide minerals flotation separation method.
Background technology
Mainly contain following a few class at plumbous zinc sulphur content from pyritous inhibitor in floatation process both at home and abroad: lime, cyanide, reductant-oxidant, organic inhibitor, microbial inhibitor etc.Lime is the inhibitor being most widely used in plumbous zinc sulphur separating flotation, and in ore pulp system, lime exists with the form of OH-ion and Ca2+ ion.By forming hydrophilic film at mineral surfaces, there is with xanthate anion the mode such as xanthate anion that competing Adsorption and desorption is adsorbed on mineral surfaces and suppress pyrite.But a large amount of uses of lime easily cause series of problems: flotation froth is sticky, carries impurity secretly many, and concentrate quality is poor; The noble metals such as the gold, silver of lime to association in ore have inhibitory action in various degree, are unfavorable for the recycling of noble metal gold, silver to association in ore etc.; Select sulphur difficulty, after pyrite is suppressed by lime, conventionally need add after a large amount of acid activates and can reclaim; The easy fouling of lime, fixed, blocking pipe, be unfavorable for that production operation and index are stable.Cyanide is pyritous good inhibitor equally in plumbous zinc sulphur separating flotation, is widely used in the past in the FLOTATION SEPARATION of lead-zinc polymetallic sulfide ore stone.Cyanide mainly taking CN-ion as main, makes pyrite receive inhibition by form the modes such as the hydrophilic film of complex compound, the activating ion of eliminating ore pulp and mineral surfaces, dissolution of minerals surface xanthate collector film with pyrite surface in ore pulp.But cyanide is violent in toxicity, ecological environment is easily produced to significant damage.Reductant-oxidant is by regulating pulp potential to realize pyritous inhibition under oxidation or reducing atmosphere.Under certain condition oxidant (as H2O2, potassium permanganate, potassium bichromate etc.) thus can under oxidizing atmosphere, make pyrite ore deposit surface oxidation generate hydrophilic substance to suppress pyrite by adjusting pulp potential.Reducing agent (as SO2, sulphite, vulcanized sodium, sodium dithionite etc.) thus can adjust pulp potential under reducing atmosphere desorb mineral surfaces xanthate suppress pyrite.Reductant-oxidant toxicity is little, and waste water is easily processed, but a little less than reductant-oxidant inhibition ability, while adjusting current potential, consumption is large, and pulp potential is unstable, production operation complexity.Be different from inorganic inhibitor, the features such as that organic inhibitor has is of a great variety, wide material sources, safety and environmental protection, can calculate design to it according to the principle of quantum chemistry, certain minerals system and actual needs are come to designer drug agent molecule structure and functional group simultaneously.These advantages make organic inhibitor in mineral floating, have potential advantage, have Application and Development space widely.
Summary of the invention
Based on the existing deficiency that lead-zinc sulfide ore floatation separating technology is existed, the difficult problem separating with Sphalerite flotation with pyrite for galena, provide a kind of and not only ensured lead concentrate grade and the rate of recovery but also be conducive to that the noble metals such as gold and silver reclaim, galena separates inhibitor and separation method with Sphalerite flotation with pyrite.
Detailed technology scheme of the present invention comprises the following steps:
(1) galena separates an inhibitor with pyrite with Sphalerite flotation, it is characterized in that: this inhibitor SDSN contains following component characteristics: dimethyl dithiocarbamate: 2-methyl thio-ethylamine=1～3:1.
(2) ore grinding, is milled to granularity by raw ore and is less than 200 orders and accounts for 65～85%;
(3) flotation of lead, after ore grinding, ore pulp enters plumbum floatation operation.Through 1 lead roughly select, selected and 1～3 lead of 2～3 lead scans acquisition lead concentrate.Roughly select in operation at lead, raw ore per ton adds SDSN 100～700g/t, stirs and sizes mixing 3～5 minutes, then add 30～80g/t butyl xanthate consumption and 10～60g butyl ammonium aerofloat, sizes mixing 1～3 minute; In the selected operation of lead, add respectively SDSN 10～50g/t; Scan in operation at lead, add respectively SDSN 10～100g/t, butyl xanthate 1～10g/t, butyl ammonium aerofloat 1～10g/t.
(4) in the present invention, adopt butyl xanthate and the butyl ammonium aerofloat collecting agent as lead minerals, adopt SDSN (dimethyl dithiocarbamate: 2-methyl thio-ethylamine=1～3:1) to suppress pyrite and zincblende, realize galena and separate with pyrite and the efficient of zincblende.Specifically, concerning lead is roughly selected, before adding xanthate collectors, SDSN is joined in ore pulp, the metal ion by pyrite, zincblende surface in complexing, chelation and ore pulp forms difficulty soluble salt, is covered in pyrite and zincblende surface makes it hydrophilic.After butyl xanthate joins in ore pulp, the solubility product of the difficulty soluble salt generating due to pyrite, zincblende and SDSN is much smaller than the solubility of the xanthates generating with xanthic acid radical ion, so the preferential xanthan acid group of SDSN and pyrite, zincblende effect, thereby suppressed.But the solubility product of the salt of plumbous and xanthic acid radical ion and the generation of dimethyl dithiocarbamic acid radical ion is approaching, xanthan acid group is difficult to be substituted, and therefore lead is difficult for suppressed.The existence of a small amount of lead dimethyl dithiocarbamate, can also play synergy with xanthan acid group, has the effect of activation galena.In plumbous refining process, SDSN is by the synergy of chemical competitive Adsorption and electrochemical reduction, make dimethyl dithiocarbamate and 2-methyl thio-ethylamine can optionally be adsorbed on zincblende, pyrite surface, or desorption absorption is at the xanthate of these mineral surfaces, thereby pyrite, zincblende are produced to strong inhibition effect.Realizing lead minerals separates with the efficient of zinc sulfur mineral.
Compared with prior art, the present invention has the following advantages:
(1) inhibitor provided by the invention has selectively well, and inhibition ability is strong, environmental friendliness, and consumption is few, adds the features such as convenient.Can well suppress pyrite and zincblende, realize galena and separate with pyrite and the efficient of zincblende,
(2) SDSN does not affect the recovery of Precious Metals as inhibitor, overcome the recovery of the Precious Metals such as gold, silver that traditional lime method, cyanide process cause low and environment is produced to the difficult problem of severe contamination, for the separation of complicated lead-zinc sulfide ore provides a kind of efficient and green flotation separation method.
Brief description of the drawings
Fig. 1 is process chart of the present invention
Detailed description of the invention
Below in conjunction with embodiment, technology contents of the present invention is elaborated.
Embodiment 1
Guangdong high-sulfur complicated difficult selects plumbous zinc ore, and in ore, major metal mineral are pyrite, zincblende, galena.Main gangue mineral is quartz, calcite, feldspar etc.Raw ore multielement analysis the results are shown in Table 1.
Table 1 sample multielement chemical analysis results/%
| Element | Zn | Pb | Cu | TFe | SiO 2 | Al 2O 3 | CaO |
| Content | 8.50 | 4.30 | 0.07 | 25.3 | 12.81 | 0.74 | 5.20 |
| Content | MgO | Na 2O | K 2O | As | S | Au（g/t） | Ag（g/t） |
| Content | 0.55 | 0.96 | 0.78 | 0.19 | 28.10 | <0.1 | 89.16 |
As shown in Figure 1, concrete technology parameter is as follows in technological process:
(1) ore grinding: raw ore is milled to granularity and is less than 200 orders and accounts for 85%;
(2) flotation of lead: after ore grinding, ore pulp carries out plumbum floatation, flotation flowsheet be once that lead is roughly selected, three lead is selected and once lead scan acquisition lead concentrate.Lead is roughly selected in operation, adds SDSN 600g/t, stirs and sizes mixing 5 minutes, then add 60g/t butyl xanthate consumption and 15g/t butyl ammonium aerofloat, sizes mixing 3 minutes; Plumbous essence 1 adds SDSN 30g/t, and plumbous selected 2 add SDSN 20g/t, and plumbous selected 3 add SDSN 10g/t, and lead is scanned 1 interpolation SDSN30g/t, butyl xanthate 10g/t, butyl ammonium aerofloat 5g/t.
Technical indicator: lead concentrate is leaded 60.19%, containing zinc 1.91%, lead recovery 86.77%.
Embodiment 2
The plumbous zinc ore of Hunan high-sulfur, the major metal mineral in ore are pyrite, galena, zincblende.Main gangue mineral is dolomite, calcite, quartz etc.Raw ore multielement analysis the results are shown in Table 2.
Table 2 sample multielement chemical analysis results/%
| Element | TFe | Cu | Pb | Zn | S | As | Mn |
| Content | 11.44 | 0.054 | 3.55 | 4.15 | 16.50 | 0.28 | 0.36 |
| Content | CaO | MgO | SiO 2 | Al 2O 3 | CaF 2 | Au（g/t） | Ag（g/t） |
| Content | 29.25 | 1.75 | 20.23 | 3.21 | 0.47 | 1.10 | 150.50 |
As shown in Figure 1, concrete technology parameter is as follows in technological process:
(1) ore grinding: raw ore is milled to granularity and is less than 200 orders and accounts for 70%;
(2) flotation of lead: after ore grinding, ore pulp carries out plumbum floatation, flotation flowsheet be once that lead is roughly selected, three lead is selected and once lead scan acquisition lead concentrate.Lead is roughly selected in operation, adds SDSN 550g/t, stirs and sizes mixing 5 minutes, then add 40g/t butyl xanthate and 10g/t butyl ammonium aerofloat, sizes mixing 3 minutes; Plumbous essence 1 adds SDSN 30g/t, and plumbous selected 2 add SDSN 20g/t, and plumbous selected 3 add SDSN 10g/t; Lead is scanned 1 interpolation SDSN 30g/t, butyl xanthate 5g/t, butyl ammonium aerofloat 5g/t.
Technical indicator: lead concentrate is leaded 61.55%, containing zinc 2.05%, lead recovery 93.20%.
Example 3
The plumbous zinc ore of Vietnam, the major metal mineral in ore are pyrite, zincblende, galena.Main gangue mineral is quartz, calcite, dolomite etc.Raw ore multielement analysis the results are shown in Table 3.
Table 3 sample multielement chemical analysis results/%
| Element | Pb | Zn | Cu | SiO2 | Al2O3 | CaO | MgO |
| Content | 1.85 | 0.73 | 0.02 | 35.93 | 10.80 | 12.02 | 6.74 |
| Content | S | Fe | CaF 2 | K 2O | Na 2O | Au（g/t） | Ag（g/t） |
| Content | 7.13 | 6.78 | 0.14 | 2.54 | 1.38 | <0.1 | 80 |
As shown in Figure 1, concrete technology parameter is as follows in technological process:
(1) ore grinding: raw ore is milled to granularity and is less than 200 orders and accounts for 76%;
(2 flotation of lead: after ore grinding, ore pulp carries out plumbum floatation, flotation flowsheet is once that lead is roughly selected, twice plumbous selected and twice lead is scanned acquisition lead concentrate.Lead is roughly selected in operation, adds SDSN 300g/t, stirs and sizes mixing 5 minutes, then add 40 g/t butyl xanthates and 20 g/t butyl ammonium aerofloats, sizes mixing 3 minutes; Plumbous essence 1 adds SDSN 20g/t, and plumbous selected 2 add SDSN 10g/t; Lead is scanned 1 interpolation SDSN 30g/t, butyl xanthate 5g/t, and butyl ammonium aerofloat 5g/t, lead is scanned 2 interpolation SDSN 10g/t, butyl xanthate 5g/t, butyl ammonium aerofloat 5g/t.
Technical indicator: lead concentrate is leaded 60.02%, containing zinc 2.54%, lead recovery 84.05%.
Claims (5)
1. galena separates an inhibitor with pyrite with Sphalerite flotation, it is characterized in that: this inhibitor SDSN contains following component characteristics: dimethyl dithiocarbamate: 2-methyl thio-ethylamine=1～3:1.
2. galena and pyrite and a Sphalerite flotation separation method, is characterized in that comprising the following steps:
(1) ore grinding, is milled to granularity by raw ore and is less than 200 orders and accounts for 65～85%;
(2) after ore grinding, enter plumbum floatation operation, use butyl xanthate and the butyl ammonium aerofloat collecting agent as lead minerals, SDSN is as the inhibitor of pyrite and zincblende, carry out lead minerals flotation, plumbum floatation operation comprises one roughing, scans for 1～3 time, and 2～3 times selected.
3. separation method according to claim 2, it is characterized in that: the described lead of step (2) is roughly selected in operation, and raw ore per ton adds SDSN 100～700g, stirs 3～5 minutes, add again 30～80g butyl xanthate and 10～60g butyl ammonium aerofloat, size mixing 1～3 minute.
4. separation method according to claim 2, is characterized in that: in the selected operation of lead described in step (2), and each selected SDSN 10～50g/t that adds respectively.
5. separation method according to claim 2, is characterized in that: the described lead of step (2) is scanned in operation, adds respectively SDSN 10～50g/t, butyl xanthate 1～10g/t, butyl ammonium aerofloat 1～10g/t.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105413878A (en) * | 2015-11-30 | 2016-03-23 | 广西大学 | Preparing method for lead and zinc flotation separation inhibitor |
| CN105817338A (en) * | 2016-05-24 | 2016-08-03 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Shear flotation method capable of improving recovery efficiency of micro-fine particle galena |
| CN106391321A (en) * | 2016-12-07 | 2017-02-15 | 广西大学 | Flotation separation method of galena and smaltite |
| 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 |
| CN108296026A (en) * | 2017-12-28 | 2018-07-20 | 三明学院 | A kind of low zinc high type difficulty of lead selects the method for floating of Pb-Zn deposits |
| CN108837950A (en) * | 2018-05-31 | 2018-11-20 | 昆明冶金研究院 | A kind of pyrite composite inhibitor and its application |
| CN110064509A (en) * | 2019-04-12 | 2019-07-30 | 东北大学 | A kind of galena control oxidation-flotation recovery method |
| CN110064521A (en) * | 2019-04-08 | 2019-07-30 | 江西理工大学 | A kind of beneficiation method of difficult lead zinc sulphur ore |
| CN110216019A (en) * | 2019-06-21 | 2019-09-10 | 北京矿冶科技集团有限公司 | A kind of light degradation type light sensitive molecule sulphide ore inhibitor and the preparation method and application thereof |
| CN110280395A (en) * | 2019-05-28 | 2019-09-27 | 西北矿冶研究院 | Low-sulfur copper-lead-zinc polymetallic ore sequential preferential flotation separation method |
| CN111992336A (en) * | 2020-08-18 | 2020-11-27 | 中南大学 | Selective desorption and recycling method for mineral surface medicament |
| CN112439554A (en) * | 2020-10-26 | 2021-03-05 | 云南驰宏锌锗股份有限公司 | Comprehensive recovery process of silver-lead-zinc-sulfur bulk concentrate |
| CN112827659A (en) * | 2021-01-03 | 2021-05-25 | 中南大学 | Reagent and method for selective flotation separation of galena and sphalerite |
| CN113617532A (en) * | 2021-08-09 | 2021-11-09 | 彝良驰宏矿业有限公司 | Combined inhibitor for lead-sulfur sulfide ore flotation separation and application |
| CN117943210A (en) * | 2024-03-26 | 2024-04-30 | 中国矿业大学(北京) | Flotation separation inhibitor for chalcopyrite and pyrite, preparation method and application |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105413878A (en) * | 2015-11-30 | 2016-03-23 | 广西大学 | Preparing method for lead and zinc flotation separation inhibitor |
| CN105817338A (en) * | 2016-05-24 | 2016-08-03 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Shear flotation method capable of improving recovery efficiency of micro-fine particle galena |
| CN106391321A (en) * | 2016-12-07 | 2017-02-15 | 广西大学 | Flotation separation method of galena and smaltite |
| 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 |
| CN108296026B (en) * | 2017-12-28 | 2020-04-10 | 三明学院 | Flotation method for lead-low-zinc high-type refractory lead-zinc ore |
| CN108296026A (en) * | 2017-12-28 | 2018-07-20 | 三明学院 | A kind of low zinc high type difficulty of lead selects the method for floating of Pb-Zn deposits |
| CN108837950A (en) * | 2018-05-31 | 2018-11-20 | 昆明冶金研究院 | A kind of pyrite composite inhibitor and its application |
| CN108837950B (en) * | 2018-05-31 | 2021-05-11 | 昆明冶金研究院 | Pyrite composite inhibitor and application thereof |
| CN110064521A (en) * | 2019-04-08 | 2019-07-30 | 江西理工大学 | A kind of beneficiation method of difficult lead zinc sulphur ore |
| CN110064521B (en) * | 2019-04-08 | 2022-01-11 | 江西理工大学 | Beneficiation method for lead-zinc sulfide ore difficult to treat |
| CN110064509A (en) * | 2019-04-12 | 2019-07-30 | 东北大学 | A kind of galena control oxidation-flotation recovery method |
| CN110064509B (en) * | 2019-04-12 | 2021-12-07 | 东北大学 | Method for controlling oxidation-flotation recovery of galena |
| CN110280395A (en) * | 2019-05-28 | 2019-09-27 | 西北矿冶研究院 | Low-sulfur copper-lead-zinc polymetallic ore sequential preferential flotation separation method |
| CN110280395B (en) * | 2019-05-28 | 2021-07-13 | 西北矿冶研究院 | Low-sulfur copper-lead-zinc polymetallic ore sequential preferential flotation separation method |
| CN110216019A (en) * | 2019-06-21 | 2019-09-10 | 北京矿冶科技集团有限公司 | A kind of light degradation type light sensitive molecule sulphide ore inhibitor and the preparation method and application thereof |
| CN111992336A (en) * | 2020-08-18 | 2020-11-27 | 中南大学 | Selective desorption and recycling method for mineral surface medicament |
| CN112439554A (en) * | 2020-10-26 | 2021-03-05 | 云南驰宏锌锗股份有限公司 | Comprehensive recovery process of silver-lead-zinc-sulfur bulk concentrate |
| CN112827659A (en) * | 2021-01-03 | 2021-05-25 | 中南大学 | Reagent and method for selective flotation separation of galena and sphalerite |
| CN113617532A (en) * | 2021-08-09 | 2021-11-09 | 彝良驰宏矿业有限公司 | Combined inhibitor for lead-sulfur sulfide ore flotation separation and application |
| CN113617532B (en) * | 2021-08-09 | 2023-01-24 | 彝良驰宏矿业有限公司 | Combined inhibitor for lead-sulfur sulfide ore flotation separation and application |
| CN117943210A (en) * | 2024-03-26 | 2024-04-30 | 中国矿业大学(北京) | Flotation separation inhibitor for chalcopyrite and pyrite, preparation method and application |
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