CN110201798A - A kind of DC activator and the acidless craft for sorting the sulphur, iron mineral that are inhibited by high-alkali and high calcium - Google Patents
A kind of DC activator and the acidless craft for sorting the sulphur, iron mineral that are inhibited by high-alkali and high calcium Download PDFInfo
- Publication number
- CN110201798A CN110201798A CN201910316205.3A CN201910316205A CN110201798A CN 110201798 A CN110201798 A CN 110201798A CN 201910316205 A CN201910316205 A CN 201910316205A CN 110201798 A CN110201798 A CN 110201798A
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- CN
- China
- Prior art keywords
- magnetic
- tailing
- sulphur
- iron
- alkali
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000012190 activator Substances 0.000 title claims abstract description 37
- 239000005864 Sulphur Substances 0.000 title claims abstract description 33
- 239000011575 calcium Substances 0.000 title claims abstract description 30
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000003513 alkali Substances 0.000 title claims abstract description 28
- 229910052791 calcium Inorganic materials 0.000 title claims abstract description 28
- 229910001608 iron mineral Inorganic materials 0.000 title claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 176
- 229910052742 iron Inorganic materials 0.000 claims abstract description 88
- 238000005188 flotation Methods 0.000 claims abstract description 45
- 238000007885 magnetic separation Methods 0.000 claims abstract description 26
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 18
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 18
- 150000003863 ammonium salts Chemical class 0.000 claims abstract description 15
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 8
- 229910052952 pyrrhotite Inorganic materials 0.000 claims abstract description 6
- 239000012141 concentrate Substances 0.000 claims description 57
- 239000003795 chemical substances by application Substances 0.000 claims description 37
- 239000006260 foam Substances 0.000 claims description 35
- 239000004088 foaming agent Substances 0.000 claims description 30
- 238000003756 stirring Methods 0.000 claims description 26
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical group [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 20
- 239000006148 magnetic separator Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000010926 purge Methods 0.000 claims description 5
- 238000013019 agitation Methods 0.000 claims description 4
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical group CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 44
- 230000004913 activation Effects 0.000 abstract description 18
- 239000002253 acid Substances 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 9
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 abstract description 5
- 238000010790 dilution Methods 0.000 abstract description 5
- 239000012895 dilution Substances 0.000 abstract description 5
- 229910000037 hydrogen sulfide Inorganic materials 0.000 abstract description 5
- 238000003860 storage Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 230000002378 acidificating effect Effects 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000005764 inhibitory process Effects 0.000 abstract description 2
- 230000000505 pernicious effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 25
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 18
- 239000011028 pyrite Substances 0.000 description 18
- 229910052683 pyrite Inorganic materials 0.000 description 18
- 238000007792 addition Methods 0.000 description 13
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 13
- 229910052500 inorganic mineral Inorganic materials 0.000 description 13
- 239000011707 mineral Substances 0.000 description 13
- 235000010755 mineral Nutrition 0.000 description 13
- 230000000694 effects Effects 0.000 description 12
- 230000008569 process Effects 0.000 description 12
- 239000010949 copper Substances 0.000 description 11
- 235000019270 ammonium chloride Nutrition 0.000 description 9
- 239000011790 ferrous sulphate Substances 0.000 description 9
- 235000003891 ferrous sulphate Nutrition 0.000 description 9
- 238000011084 recovery Methods 0.000 description 9
- 239000011593 sulfur Substances 0.000 description 8
- 229910052717 sulfur Inorganic materials 0.000 description 8
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 238000007667 floating Methods 0.000 description 6
- 229910052603 melanterite Inorganic materials 0.000 description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000012991 xanthate Substances 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 3
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 3
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 3
- 239000001099 ammonium carbonate Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 3
- 239000011133 lead Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- UGWKCNDTYUOTQZ-UHFFFAOYSA-N copper;sulfuric acid Chemical compound [Cu].OS(O)(=O)=O UGWKCNDTYUOTQZ-UHFFFAOYSA-N 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- MVZXTUSAYBWAAM-UHFFFAOYSA-N iron;sulfuric acid Chemical compound [Fe].OS(O)(=O)=O MVZXTUSAYBWAAM-UHFFFAOYSA-N 0.000 description 2
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical compound [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 2
- GCPRNIZDNTXQIX-NBPLQZBRSA-N 1-chloro-2-(2-chloroethylsulfanyl)ethane;dichloro-[(e)-3-chloroprop-2-enyl]arsane Chemical compound ClCCSCCCl.Cl\C=C\C[As](Cl)Cl GCPRNIZDNTXQIX-NBPLQZBRSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- BFUPQMKQJRHLRA-UHFFFAOYSA-N [Pb]=S.[Zn] Chemical compound [Pb]=S.[Zn] BFUPQMKQJRHLRA-UHFFFAOYSA-N 0.000 description 1
- CZKYLWACZPRYOR-UHFFFAOYSA-N [S].OS(O)(=O)=O Chemical compound [S].OS(O)(=O)=O CZKYLWACZPRYOR-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- GJYLKIZKRHDRER-UHFFFAOYSA-N calcium;sulfuric acid Chemical compound [Ca].OS(O)(=O)=O GJYLKIZKRHDRER-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910001779 copper mineral Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002433 hydrophilic molecules Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- FLTRNWIFKITPIO-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe] FLTRNWIFKITPIO-UHFFFAOYSA-N 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001656 zinc mineral Inorganic materials 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
Classifications
-
- 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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
-
- 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
-
- 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
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
It the invention discloses a kind of DC activator and sorts by the acidless craft of the sulphur of high-alkali and high calcium inhibition, iron mineral, it includes FeSO4•7H2O and ammonium salt, the two mass ratio are (2 ~ 3): 1, it is the following steps are included: (1), flotation: sulphur, the iron ore inhibited by high-alkali and high calcium carries out flotation；(2) magnetic separation；(3) reverse flotation desulfurizing；(4) high-gradient magnetic separation；(5) PYRRHOTITE BY FLOTATION；The present invention has the advantages that firstly, at high ore pulp PH (PH=9 ~ 11.5) using DC activator, the acid regulator such as sulfuric acid can not be added, mitigate corrosion of the acidic materials to equipment, pipeline；Secondly, avoiding sulfuric acid in the security risk of the links such as shipment, storage, dilution, addition using DC activator；Third does not use acid activation, has prevented the sulfuric acid when sulfuric acid adds and has reacted generation hydrogen sulfide pernicious gas with magnetic iron ore.
Description
Technical field
The present invention relates to ore dressing field, it is related to a kind of dressing method of the pyrites such as pyrite, magnetic iron ore, especially
During nonferrous metallic ores for sulfur-bearing, iron ore sort, the dressing method of the troilite inhibited by high-alkali and high calcium.
Background technique
In non-ferrous metal mineral reserve, usually contain sulphur iron resource in varying numbers, it is chemical plant relieving haperacidity and smelting iron and steel
Important source material, in ore sorts, pyrite is not only to need the association valuable mineral of synthetical recovery and ore dressing in ore
Other products such as copper, lead, the impurity in zinc concentrate product in operation, to obtain qualified copper, lead, zinc concentrate, such as Fig. 2 institute
Show, conventional method is that CaO is added, and inhibits pyrite under the conditions of high-alkali and high calcium, copper, lead, zinc tailing is selected to reuse largely
Sulfuric acid reduces pulp PH value, activates pyrite, but addition sulfuric acid certainly will increase sulfuric acid in rings such as shipment, storage, dilution, additions
The security risk of section, chemical reaction, which occurs, for especially unexpected leakage and sulfuric acid and magnetic iron ore can all generate hydrogen sulfide gas, right
Operating personnel's harm is very big, and it is also very serious to be emitted into environmental pollution in air.
Magnetic iron ore is easy to oxidize, argillization.Under identical conditions, the oxidation rate of magnetic iron ore is the tens of pyrite
Times, the magnetic iron ore floatability after oxidation and argillization is deteriorated, and slot is easy in floatation process, in addition, magnetic iron ore and monocline magnetic are yellow
Iron ore in addition to itself is easy to generate magnetic coagulation, particulate monocline pyrrhotine since magnetization is easy the cover on magnetic iron ore surface,
Especially when mineral granularity is thinner, magnetic coagulation is more serious, and the physico-chemical property of these troilite brings larger to sorting operation
It is difficult.
As Chinese invention patent publication number CN108262156A discloses the low-grade difficult choosing oxidation of high shale content high basic gangue
The beneficiation method of copper mine floats-smelting process integration using magnetic-, and leaching is sulfuric acid with acid, can generate pollution, also bring safety wind
Danger.For another example it is preferential to disclose the low high alkalinity part of lead zinc sulphur ore reinforcing dispersion by Chinese invention patent notification number CN102371212B
Bulk flotation technology, in lead zinc sulphur ore sorts, using calgon as dispersing agent, using lime as regulator, with zinc sulfate
It is inhibitor with sodium sulfite, using copper sulphate as activator, Chinese invention patent publication number CN107999267A is disclosed for another example
High sulfur-lead-zinc ore floatation separation process under a kind of high concentration environment, in zinc sulphur separating flotation using lime regulation pH values of pulp and
Pulp potential realizes zinc sulphur content from and adding the floating that a small amount of activator and collecting agent strengthen difficult floating zinc mineral, this two parts of patents
Floatation process be all using copper sulphate as activator, and copper sulphate is at high price, and activation effect is also not fully up to expectations.
Summary of the invention
It is sorted for the nonferrous metallic ores of sulfur-bearing, iron ore, the sulphur that is inhibited by high-alkali and high calcium, iron ore difficulty are living
Change, sulphur iron extract mine producation grade is unqualified, the rate of recovery is relatively low, main regulator sulfuric acid is in rings such as shipment, storage, dilution, additions
The security risk and sulfuric acid and containing sulfur minerals of section generate the defects of hydrogen sulfide is to big, outer pollution discharging environment is endangered to operating personnel,
Want to provide thus it is a kind of sort sulphur, the acidless craft of iron mineral and method, to realize sulphur in non-ferro metals debris, iron resource
Efficient, environmentally friendly recycling.
The technical problem to be solved by the present invention is to existing ore-dressing techniques used under the conditions of high-alkali and high calcium sulfuric acid as
Activator brings security risk and environmental pollution, can improve production cost using copper sulphate, provide thus a kind of DC activator and
Sort the acidless craft of the sulphur, iron mineral that are inhibited by high-alkali and high calcium.
The technical scheme is that a kind of acidless craft for sorting the sulphur, iron mineral that are inhibited by high-alkali and high calcium, it is wrapped
Include following steps:
(1), flotation: sulphur, the iron ore inhibited by high-alkali and high calcium carries out flotation, 1. roughing: adjusting pulp density to 25-
35%, DC activator is added, dosage is 500~1000g/t, after stirring 5min, adds 50~80g/t of collecting agent and foaming agent 40
~60g/t stirs 3min, obtains roughing foam I and rougher tailings I；2. selected: roughing foam directly carries out selected, obtains essence
Select foam and cleaner tailings I；3. scanning: once purging selection: adding collecting agent 20-40g/t and foaming agent 10- in rougher tailings
20g/t, acquisition scan chats I and scan tailing I, scan chats I sequence and are back to roughing；It is secondary to scan: to scan tailing I
Middle addition collecting agent 20-40g/t and foaming agent 10-20g/t, acquisition scans chats II and scans tailing II, wherein selected foam
For iron concentrate I；
(2) magnetic separation: the magnetic separator magnetic separation that tailing II is 0.08~0.5T through magnetic field strength is scanned obtained by step (1), is obtained
Magnetic concentrate I and tailing I, tailing I are true tailings；
(3) reverse flotation desulfurizing: magnetic concentrate I obtained by step (2) is adjusted into pulp density to 25-30%, adds DC activation
Agent, dosage is 500~800g/t, after stirring 5min, adds 30~50g/t of collecting agent and 20~40g/t of foaming agent, stirring
3min, obtains reverse flotation foam I and magnetic iron ore, and reverse flotation foam I is magnetic iron ore, magnetic iron ore, that is, iron ore concentrate；
(4) high-gradient magnetic separation: cleaner tailings I obtained by step (1) and to scan chats II through magnetic field strength be 0.6~2.0T
High-gradient magnetic separation, obtain High-gradient Magnetic concentrate selection I and tailing II, tailing II be true tailings；
(5) PYRRHOTITE BY FLOTATION: selecting foam I to merge step (4) High-gradient Magnetic concentrate selection I with step (3) reverse flotation, adjusts
Pulp density is saved to 25-30%, adds DC activator, dosage is 300~600g/t, and stirring after five minutes, adds collecting agent 30
~50g/t, 20~40g/t of foaming agent stir 3min, obtain iron concentrate II and tailing III, iron concentrate II, that is, magnetic iron ore, tail
Mine III is true tailings.
DC activator described in above scheme is to contain FeSO4·7H2The mixture of O and ammonium salt, the FeSO4·7H2O
Mass ratio with ammonium salt is (2~3): 1.
Ammonium salt described in above scheme is NH4Cl。
Collecting agent described in above scheme is butyl xanthate, and the foaming agent is No. 2 oil.
In step described in above scheme (1) roughing and scan equipment be agitation impeller flotator, picking equipment is floating
Column is selected, floatation equipment is shallow trench agitation impeller flotator in step (5).
It is a kind of for sorting the DC activator of the acidless craft of the sulphur inhibited by high-alkali and high calcium, iron mineral, it includes
FeSO4·7H2O and ammonium salt, the two mass ratio are (2~3): 1.
The beneficial effects of the invention are as follows solve the sulphur inhibited by high-alkali and high calcium, the activation of iron ore difficulty, the production of sulphur iron ore concentrate
Product grade is unqualified, the rate of recovery is relatively low, main regulator sulfuric acid the links such as shipment, storage, dilution, addition security risk and
Sulfuric acid and containing sulfur minerals generate hydrogen sulfide and endanger the technical problems such as big, outer pollution discharging environment to operating personnel, and the present invention is to mentioning
High Business Economic Benefit and social benefit all have significance.
Compared with the prior art, the advantages of the present invention are as follows: firstly, at high ore pulp PH (PH=9~11.5), using DC
Activator can not add the acid regulator such as sulfuric acid, mitigate corrosion of the acidic materials to equipment, pipeline；Secondly, being activated using DC
Agent avoids sulfuric acid in the security risk of the links such as shipment, storage, dilution, addition；Third does not use acid activation, has prevented in sulphur
Sulfuric acid is reacted with magnetic iron ore when acid addition generates hydrogen sulfide pernicious gas；4th, magnetic current journey, is effectively relieved after use is first floated
Magnetic separation board effect is low, equipment is more, takes up an area the problems such as big；5th, FeSO4·7H2O and NH4Cl price is timed in several hundred members one, with
The prices up to ten thousand such as conventional sulfuric acid copper are compared, and beneficiation cost is considerably reduced.
Detailed description of the invention
Fig. 1 is process flow chart of the invention；
Fig. 2 is the process flow chart that tradition sorts sulphur, iron mineral.
Specific embodiment
With reference to the accompanying drawing, technical scheme in the embodiment of the invention is clearly and completely described.Obviously, it is retouched
The embodiment stated is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment without making creative work, belongs to protection model of the invention
It encloses.
Embodiment 1: it is a kind of to sort sulphur, the acidless craft of iron mineral and method, it sequentially includes the following steps:
(1) flotation: sulphur, the iron ore inhibited by high-alkali and high calcium carries out flotation, 1. roughing: adjusting pulp density to 25%,
DC activator is added, DC activator is to contain FeSO4·7H2The mixture of O and ammonium salt, the FeSO4·7H2The matter of O and ammonium salt
Amount ratio is 2:1, dosage 1000g/t, after stirring 5min, adds collecting agent 50g/t, foaming agent 40g/t, stirs 3min, obtain
To roughing foam I and rougher tailings I；2. selected: any medicament is not added in roughing foam, directly carries out selected, obtains selected foam
With cleaner tailings I；3. scanning: once purging selection: adding collecting agent 20g/t and foaming agent 10g/t in rougher tailings, scanned
Chats I and tailing I is scanned, scans chats I sequence and be back to roughing；It is secondary to scan: collecting agent 20g/ is added in scanning tailing I
T and foaming agent 10g/t, acquisition scan chats II and scan tailing II, wherein selected foam is iron concentrate I, i.e. pyrite, essence
Selecting tailing I main component is magnetic iron ore and part gangue mineral, and scanning tailing II main component is magnetic iron ore, a small amount of magnetic Huang iron
Mine and gangue mineral；
(2) magnetic separation: the magnetic separator magnetic separation that tailing II is 0.08T through magnetic field strength is scanned, magnetic concentrate I and magnetic tailing are obtained
I, magnetic concentrate I main component are magnetic iron ore and part magnetic iron ore, and magnetic tailing I is true tailings；
(3) reverse flotation desulfurizing: adjusting pulp density to 28% for magnetic concentrate I, adds DC activator, dosage 500g/t,
After stirring 5min, collecting agent 30g/t, foaming agent 20g/t are added, 3min is stirred, obtains reverse flotation foam I and magnetic iron ore, it is anti-floating
Selecting foam I is magnetic iron ore, magnetic iron ore, that is, iron ore concentrate qualified products；
(4) high-gradient magnetic separation: cleaner tailings I and scan chats II through magnetic field strength be 1.0T high-gradient magnetic separation, obtain
High-gradient Magnetic concentrate selection I and tailing II, High-gradient Magnetic concentrate selection main component are magnetic iron ore, and tailing II is true tailings；
(5) PYRRHOTITE BY FLOTATION: selecting foam I to merge High-gradient Magnetic concentrate selection I with reverse flotation, adjust pulp density to
25%, DC activator is added, dosage 300g/t after stirring 5min, adds collecting agent 30g/t, foaming agent 20g/t, stirring
3min, obtains iron concentrate II and tailing III, and iron concentrate II, that is, magnetic iron ore, tailing III are true tailings.
As a comparison, according to selecting process shown in Fig. 1 flow chart, in flotation stage, reverse flotation desulfurizing, magnetic Huang iron
Sulfuric acid regulator, adjusting pH value to PH7.0 is added in mine flotation stage, and is separately added into copper sulphate 100g/t, 80g/t, 60g/t,
Other conditions are the same as embodiment 1.Two groups of condition test results see the table below:
From upper table as it can be seen that DC of the invention activation and sorting index after sulfuric acid+copper sulphate for activation are without significant difference, but this hair
The economic benefit and social benefit of bright acidless craft are much better than traditional acid adding adjusting process.
Embodiment 2: it is a kind of to sort sulphur, the acidless craft of iron mineral and method, it sequentially includes the following steps:
(1) flotation: sulphur, the iron ore inhibited by high-alkali and high calcium carries out flotation, 1. roughing: adjusting pulp density to 30%,
DC activator is added, DC activator is to contain FeSO4·7H2The mixture of O and ammonium hydrogen carbonate, the FeSO4·7H2O and ammonium salt
Mass ratio be 2.5:1, dosage 900g/t, stir 5min after, add collecting agent 60g/t, foaming agent 50g/t, stirring
3min obtains roughing foam I and rougher tailings I；2. selected: any medicament is not added in roughing foam, directly carries out selected, obtains essence
Select foam and cleaner tailings I；3. scanning: once purging selection: adding collecting agent 30g/t and foaming agent 15g/t in rougher tailings, obtain
Chats I must be scanned and scan tailing I, chats I sequence is scanned and be back to roughing；It is secondary to scan: to add collecting in scanning tailing I
Agent 30g/t and foaming agent 15g/t, acquisition scan chats II and scan tailing II, wherein selected foam is iron concentrate I, i.e., yellow iron
Mine, cleaner tailings I main component are magnetic iron ore and part gangue mineral, scan tailing II main component be magnetic iron ore, it is a small amount of
Magnetic iron ore and gangue mineral；
(2) magnetic separation: the magnetic separator magnetic separation that tailing II is 0.36T through magnetic field strength is scanned, magnetic concentrate I and magnetic tailing are obtained
I, magnetic concentrate I main component are magnetic iron ore and part magnetic iron ore, and magnetic tailing I is true tailings；
(3) reverse flotation desulfurizing: adjusting pulp density to 28% for magnetic concentrate I, adds DC activator, dosage 600g/t,
After stirring 5min, collecting agent 40g/t, foaming agent 30g/t are added, 3min is stirred, obtains reverse flotation foam I and magnetic iron ore, it is anti-floating
Selecting foam I is magnetic iron ore, magnetic iron ore, that is, iron ore concentrate qualified products；
(4) high-gradient magnetic separation: cleaner tailings I and scan chats II through magnetic field strength be 1.2T high-gradient magnetic separation, obtain
High-gradient Magnetic concentrate selection I and tailing II, High-gradient Magnetic concentrate selection main component are magnetic iron ore, and tailing II is true tailings；
(5) PYRRHOTITE BY FLOTATION: selecting foam I to merge High-gradient Magnetic concentrate selection I with reverse flotation, adjust pulp density to
28%, DC activator is added, dosage 500g/t after stirring 5min, adds collecting agent 40g/t, foaming agent 30g/t, stirring
3min, obtains iron concentrate II and tailing III, and iron concentrate II, that is, magnetic iron ore, tailing III are true tailings.
As a comparison, according to selecting process shown in Fig. 2 flow chart, wherein magnetic separation strength is 0.5T, roughing addition
It is sulfuric acid activated to scan collecting agent 30g/t, foaming agent to PH7.0, copper sulphate 100g/t, collecting agent 60g/t, foaming agent 40g/t
20g/t, two groups of condition test results see the table below:
From upper table as it can be seen that it is of the invention sort sulphur, the acidless craft of iron mineral and method and the first magnetic of tradition after float, sulfuric acid+
Copper sulphate for activation technique is compared, and iron concentrate quality of the present invention is higher than traditional handicraft, and sulfur recovery rate 84.6% is much higher than traditional work
The rate of recovery of skill 62.8%；In addition, iron ore concentrate sulfur-bearing of the present invention is low, iron ore concentrate added value is greatly improved, solves tradition
The problem of sulphur, iron recovery are low in technique, iron concentrate containing high sulphur sales difficulty.
Embodiment 3: it is a kind of to sort sulphur, the acidless craft of iron mineral and method, it sequentially includes the following steps:
(1) flotation: sulphur, the iron ore inhibited by high-alkali and high calcium carries out flotation, 1. roughing: adjusting pulp density to 35%,
DC activator is added, DC activator is to contain FeSO4·7H2O and NH4The mixture of Cl, the FeSO4·7H2The matter of O and ammonium salt
Amount ratio is 3:1, dosage 1000g/t, after stirring 5min, adds collecting agent 80g/t, foaming agent 60g/t, stirs 3min, obtain
To roughing foam I and rougher tailings I；2. selected: any medicament is not added in roughing foam, directly carries out selected, obtains selected foam
With cleaner tailings I；3. scanning: once purging selection: adding collecting agent 40g/t and foaming agent 20g/t in rougher tailings, scanned
Chats I and tailing I is scanned, scans chats I sequence and be back to roughing；It is secondary to scan: collecting agent 40g/ is added in scanning tailing I
T and foaming agent 20g/t, acquisition scan chats II and scan tailing II, wherein selected foam is iron concentrate I, i.e. pyrite, essence
Selecting tailing I main component is magnetic iron ore and part gangue mineral, and scanning tailing II main component is magnetic iron ore, a small amount of magnetic Huang iron
Mine and gangue mineral；
(2) magnetic separation: the magnetic separator magnetic separation that tailing II is 0.5T through magnetic field strength is scanned, magnetic concentrate I and magnetic tailing are obtained
I, magnetic concentrate I main component are magnetic iron ore and part magnetic iron ore, and magnetic tailing I is true tailings；
(3) reverse flotation desulfurizing: adjusting pulp density to 30% for magnetic concentrate I, adds DC activator, dosage 800g/t,
After stirring 5min, collecting agent 50g/t, foaming agent 40g/t are added, 3min is stirred, obtains reverse flotation foam I and magnetic iron ore, it is anti-floating
Selecting foam I is magnetic iron ore, magnetic iron ore, that is, iron ore concentrate qualified products；
(4) high-gradient magnetic separation: cleaner tailings I and scanning the high-gradient magnetic separation that chats II is 2T through magnetic field strength, obtains high
Gradient magnetic separation concentrate I and tailing II, High-gradient Magnetic concentrate selection main component are magnetic iron ore, and tailing II is true tailings；
(5) PYRRHOTITE BY FLOTATION: selecting foam I to merge High-gradient Magnetic concentrate selection I with reverse flotation, adjust pulp density to
30%, DC activator is added, dosage 600g/t after stirring 5min, adds collecting agent 50g/t, foaming agent 40g/t, stirring
3min, obtains iron concentrate II and tailing III, and iron concentrate II, that is, magnetic iron ore, tailing III are true tailings.
As a comparison, according to selecting process shown in Fig. 1 flow chart, in flotation stage, reverse flotation desulfurizing, magnetic Huang iron
Sulfuric acid regulator, adjusting pH value to PH6.0 is added in mine flotation stage, and is separately added into copper sulphate 100g/t, 80g/t, 60g/t,
Other conditions are the same as embodiment 1.
As another pair ratio, according to selecting process shown in Fig. 2 flow chart, wherein magnetic separation strength is 0.5T, roughing
It adds sulfuric acid activated to PH6.0, copper sulphate 100g/t, collecting agent 60g/t, foaming agent 40g/t, scans collecting agent 30g/t, blister
Agent 20g/t, three groups of condition test results see the table below:
From upper table: (1) under of the present invention flow path conditions, when sulfuric acid+copper sulphate for activation adjusts pH value 6.0, iron concentrate
Sorting index is slightly better than the sorting index after DC activation of the invention, but compares in terms of economic benefit and social benefit two, this
Invention DC activation effect is still much better than traditional acid adding and copper sulphate sorting process；(2) it is floated after the first magnetic of tradition, sulfuric acid+sulfuric acid work in copper
Changing process adjustments pulp PH value is 6.0, and product quality, resource recovery all can not show a candle to the obtained index of the present invention.
Under the conditions of high-alkali high calcium, there are the hydrophilic compounds of calcium and iron on pyrite surface, it may be assumed that CaO, Ca (OH)+、
CaSO4、Ca(OH)2、Fe(OH)2、Fe(OH)3、Fe2(SO4)3Equal substances, these hydroaropic substances cause pyrite high-alkali
Be suppressed in high calcium medium, the pyrite floatability that is suppressed is deteriorated, thus be difficult to realize the mineral such as copper, lead, zinc with
The separation of pyrite.
The DC activator mechanism of action is as follows: DC activator is mainly mixed by ferrous sulfate ammonium chloride, wherein ammonium chloride
For ammonium salt class, the mechanism for activating pyrite is: first is that suitably buffering and reducing slurry pH, promoting collecting agent xanthate in sulphur
Iron mineral surface occurs electrochemical reaction and generates hydrophobic double xanthate layer；Second is that the NH that ammonium salt generates4 +Occur such as in alkaline medium
Under balance:
When pyrite and copper mineral association, Cu in ore pulp2+With the NH being dissolved in ore pulp3Effect generates Cu (NH3)2+, Cu
(NH3)2+There is buffering and stablizes Cu2+Effect, and Cu (NH3)2+In pyrite adsorption, increase its activated centre, favorably
In the effect of xanthate；When all there is no Cu in mineral and ore pulp2+When, NH3Hydrate molecule NH is formed in water3·H2O, by
Aligning in solid-liquid interface layer reduces the stability of hydrated sheath, generates dispersion to the hydrophilic the cover sludge of pyrite surface
Effect.
The mechanism of ferrous sulfate activation pyrite is: first is that suitably buffering and reducing slurry pH, promoting collecting agent yellow
Medicine occurs electrochemical reaction on pyrite surface and generates hydrophobic double xanthate layer；Second is that the Ca in precipitating ore pulp2+Inhibit ion.
It is compared with conventional activation agent: when both ferrous sulfate and ammonium chloride individually activate pyrite, the certain activation of tool
Effect, but activation effect is bad, both only mixing addition, the respective advantage of competence exertion, the troilite that high-alkali high calcium is inhibited
Object has preferable activation effect.Under the conditions of acid adding, addition ferrous sulfate activation effect is not so good as copper sulphate, but sulfuric acid copper processing
It is high；Individually addition ammonium chloride activation effect is not so good as ammonium hydrogen carbonate, but ammonium hydrogen carbonate property is unstable, largely divides at 30 degrees Celsius
Solution is not easy to store and use.
An innovative point of the invention is being applied in combination for ferrous sulfate and ammonium chloride, in butyl xanthate dosage 60g/
Under the conditions of t, No. 2 oily dosage 40g/t, different activators and dosage test are carried out, as a result see the table below:
The different activators of table 1 float sulfur test result/%
Data can be seen that choosing when addition DC activator is substantially better than individually addition ferrous sulfate and ammonium chloride in upper table
Other index, and ferrous sulfate and ammonium chloride ratio are in (2~3): be when 1 it is best, when ferrous sulfate and ammonium chloride ratio are lower than 2:1
When concentrate yield and the rate of recovery be all decreased obviously, when ferrous sulfate and ammonium chloride ratio are higher than 3:1 the sulfur grade of concentrate and
The rate of recovery of concentrate is all decreased obviously, this is the effect that cannot be expected when not tested.
Claims (8)
1. a kind of acidless craft for sorting the sulphur, iron mineral that are inhibited by high-alkali and high calcium, it is characterized in that it the following steps are included:
(1), flotation: sulphur, the iron ore inhibited by high-alkali and high calcium carries out flotation,Roughing: pulp density is adjusted to 25-35%, is added
Add DC activator, dosage is 500 ~ 1000g/t, after stirring 5min, adds 50 ~ 80g/t of collecting agent and 40 ~ 60g/t of foaming agent, stirs
3min is mixed, roughing foam is obtainedAnd rougher tailings；Selected: roughing foam directly carries out selected, obtains selected foam and selected
Tailing；It scans: once purging selection: adding collecting agent 20-40g/t and foaming agent 10-20g/t in rougher tailings, swept
Choose mineWith scan tailing, scan chatsSequence is back to roughing；It is secondary to scan: to scan tailingMiddle addition collecting agent 20-
Chats is scanned in 40g/t and foaming agent 10-20g/t, acquisitionWith scan tailing, wherein selected foam is iron concentrate；
(2) magnetic separation: tailing is scanned obtained by step (1)The magnetic separator magnetic separation for being 0.08 ~ 0.5T through magnetic field strength, obtains magnetic concentrate
And tailing, tailingFor true tailings；
(3) reverse flotation desulfurizing: by magnetic concentrate obtained by step (2)Pulp density is adjusted to 25-30%, adds DC activator, dosage is
500 ~ 800g/t after stirring 5min, adds 30 ~ 50g/t of collecting agent and 20 ~ 40g/t of foaming agent, stirs 3min, obtain reverse flotation
FoamAnd magnetic iron ore, reverse flotation foamFor magnetic iron ore, magnetic iron ore, that is, iron ore concentrate；
(4) high-gradient magnetic separation: cleaner tailings obtained by step (1)With scan chatsThe high gradient for being 0.6 ~ 2.0T through magnetic field strength
Magnetic separation obtains High-gradient Magnetic concentrate selectionAnd tailing, tailingFor true tailings；
(5) PYRRHOTITE BY FLOTATION: by step (4) High-gradient Magnetic concentrate selectionFoam is selected with step (3) reverse flotationMerge, adjusts mine
Slurry concentration to 25-30%, addition DC activator, dosage is 300 ~ 600g/t, is stirred after five minutes, addition 30 ~ 50g/t of collecting agent,
20 ~ 40g/t of foaming agent stirs 3min, obtains iron concentrateAnd tailing, iron concentrateThat is magnetic iron ore, tailingFor most finality
Mine.
2. a kind of acidless craft for sorting the sulphur, iron mineral that are inhibited by high-alkali and high calcium as described in claim 1, it is characterized in that
The DC activator is to contain FeSO4•7H2The mixture of O and ammonium salt, the FeSO4•7H2The mass ratio of O and ammonium salt be (2 ~
3): 1.
3. a kind of acidless craft for sorting the sulphur, iron mineral that are inhibited by high-alkali and high calcium as claimed in claim 2, it is characterized in that
The ammonium salt is NH4Cl。
4. a kind of acidless craft for sorting the sulphur, iron mineral that are inhibited by high-alkali and high calcium as described in claim 1, it is characterized in that
The collecting agent is butyl xanthate, and the foaming agent is No. 2 oil.
5. a kind of acidless craft for sorting the sulphur, iron mineral that are inhibited by high-alkali and high calcium as described in claim 1, it is characterized in that
In the step (1) roughing and scan equipment be agitation impeller flotator.
6. a kind of acidless craft for sorting the sulphur, iron mineral that are inhibited by high-alkali and high calcium as described in claim 1, it is characterized in that
Picking equipment is flotation column in the step (1).
7. a kind of acidless craft for sorting the sulphur, iron mineral that are inhibited by high-alkali and high calcium as described in claim 1, it is characterized in that
Floatation equipment is shallow trench agitation impeller flotator in the step (5).
8. a kind of sort the sulphur inhibited by high-alkali and high calcium, the anacidity work of iron mineral for as claimed in claim 1
The DC activator of skill, it is characterized in that: it includes FeSO4•7H2O and ammonium salt, the two mass ratio are (2 ~ 3): 1.
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