CN108097453A - The method that magnetic iron ore is removed from iron concentrate containing high sulphur - Google Patents
The method that magnetic iron ore is removed from iron concentrate containing high sulphur Download PDFInfo
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- CN108097453A CN108097453A CN201810147521.8A CN201810147521A CN108097453A CN 108097453 A CN108097453 A CN 108097453A CN 201810147521 A CN201810147521 A CN 201810147521A CN 108097453 A CN108097453 A CN 108097453A
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- iron ore
- magnetic iron
- concentrate
- ore
- magnetic
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 408
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 204
- 239000012141 concentrate Substances 0.000 title claims abstract description 88
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 239000005864 Sulphur Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000011084 recovery Methods 0.000 claims abstract description 24
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 22
- 239000012190 activator Substances 0.000 claims abstract description 20
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 14
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 12
- 239000011707 mineral Substances 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 238000000227 grinding Methods 0.000 claims abstract description 10
- 230000003647 oxidation Effects 0.000 claims abstract description 10
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims abstract description 7
- 239000001488 sodium phosphate Substances 0.000 claims abstract description 7
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims abstract description 7
- 229910000162 sodium phosphate Inorganic materials 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims description 53
- RZFBEFUNINJXRQ-UHFFFAOYSA-M sodium ethyl xanthate Chemical compound [Na+].CCOC([S-])=S RZFBEFUNINJXRQ-UHFFFAOYSA-M 0.000 claims description 25
- 238000005188 flotation Methods 0.000 claims description 21
- 239000004576 sand Substances 0.000 claims description 21
- 239000002516 radical scavenger Substances 0.000 claims description 14
- ZKDDJTYSFCWVGS-UHFFFAOYSA-M sodium;diethoxy-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [Na+].CCOP([S-])(=S)OCC ZKDDJTYSFCWVGS-UHFFFAOYSA-M 0.000 claims description 14
- 230000004913 activation Effects 0.000 claims description 9
- 238000003801 milling Methods 0.000 claims description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 6
- 239000011734 sodium Substances 0.000 claims description 6
- 229910052708 sodium Inorganic materials 0.000 claims description 6
- 235000011008 sodium phosphates Nutrition 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 241000255964 Pieridae Species 0.000 claims description 5
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims 1
- 229910052717 sulfur Inorganic materials 0.000 abstract description 30
- 239000011593 sulfur Substances 0.000 abstract description 30
- 238000010494 dissociation reaction Methods 0.000 abstract description 2
- 230000005593 dissociations Effects 0.000 abstract description 2
- 239000000178 monomer Substances 0.000 abstract description 2
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- TUFHBDDWCJZWIF-UHFFFAOYSA-N 1,3-benzothiazole;sodium Chemical compound [Na].C1=CC=C2SC=NC2=C1 TUFHBDDWCJZWIF-UHFFFAOYSA-N 0.000 description 1
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- CONMNFZLRNYHIQ-UHFFFAOYSA-N 3-methylbutoxymethanedithioic acid Chemical compound CC(C)CCOC(S)=S CONMNFZLRNYHIQ-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- XAQHXGSHRMHVMU-UHFFFAOYSA-N [S].[S] Chemical compound [S].[S] XAQHXGSHRMHVMU-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical compound CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 description 1
- HQABUPZFAYXKJW-UHFFFAOYSA-O butylazanium Chemical compound CCCC[NH3+] HQABUPZFAYXKJW-UHFFFAOYSA-O 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 229940116901 diethyldithiocarbamate Drugs 0.000 description 1
- LMBWSYZSUOEYSN-UHFFFAOYSA-N diethyldithiocarbamic acid Chemical compound CCN(CC)C(S)=S LMBWSYZSUOEYSN-UHFFFAOYSA-N 0.000 description 1
- MZGNSEAPZQGJRB-UHFFFAOYSA-N dimethyldithiocarbamic acid Chemical compound CN(C)C(S)=S MZGNSEAPZQGJRB-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- ZHPNWZCWUUJAJC-UHFFFAOYSA-N fluorosilicon Chemical compound [Si]F ZHPNWZCWUUJAJC-UHFFFAOYSA-N 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000008177 pharmaceutical agent Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 229910052569 sulfide mineral Inorganic materials 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
-
- 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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/007—Modifying reagents for adjusting pH or conductivity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- 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
The present invention relates to a kind of methods that magnetic iron ore is removed from iron concentrate containing high sulphur, belong to mineral engineering field.The higher quality to iron ore concentrate of sulfur content of iron concentrate containing high sulphur, which causes, to be seriously affected.Magnetic iron ore is oxidizable, easy argillization, and degree of oxidation is deep mixed, causes to be difficult that the sulphur in iron ore concentrate is down to less than 0.3%, and the rate of recovery loss of iron ore concentrate is larger.The present invention, can be by most of magnetic iron ore monomer dissociation and overground generation argillization by using appropriate ore grinding.The mixture of efficient, easy aluminum sulfate or aluminum sulfate and sodium phosphate, ammonium fluosilicate is used as the pH regulators and activator of magnetic iron ore, and the selective and preferable collecting agent of collecting performance, magnetic iron ore mineral surfaces are activated well, and the state-of-charge of the mineral surfaces in ore pulp is controlled well, efficiently separating for magnetic iron ore and magnetic iron ore is realized, obtains the fine quality iron concentrate of high-grade and high-recovery and magnetic iron ore rough concentrate.
Description
Technical field
The invention belongs to mineral engineering fields, and in particular to a kind of side that magnetic iron ore is removed from iron concentrate containing high sulphur
Method.
Background technology
Iron concentrate containing high sulphur sulfur content is higher, generally more than 2%, the quality of iron ore concentrate is caused and is seriously affected.Iron essence
Containing sulfur minerals present in ore deposit not only pollute air in sintering process, but also in order to ensure that desulfurization effect must be added to more
Lime, so as to cause quantity of slag increase, coke ratio rise, in addition the sulphur in steel can be also easy to produce " hot-short " in steel hot-working.Only
Having reduces the sulfur content of iron ore concentrate, could eliminate influence of the sulphur to subsequent job, could improve the grade of iron ore concentrate.In iron ore concentrate
Containing sulfur minerals be generally magnetic iron ore, magnetic iron ore is easier to aoxidize than other sulfide minerals, under oxygen and water effect,
Magnetic iron ore Quick Oxidation, oxidation rate are 20 times~100 times of pyrite.Additionally, due to magnetic iron ore crystal structure difference
Caused composition and electronic structure difference can influence magnetic iron ore oxidation to degree, micro- presence and content is how many, ring
Border temperature can all have an impact the oxidation of magnetic iron ore and oxidation rate.Therefore, magnetic iron ore is in floatation process, due to it
Oxidizable, argillization, and degree of oxidation is deep mixed, belongs to the mineral of more difficult removing.Magnetic iron ore is removed in iron ore concentrate
Method is generally floatation, relatively more to the Oxidized copper ores of removing magnetic iron ore progress at present, mainly to flotation activating, suppression
The research of preparation and collecting agent.The activator of research includes sulfuric acid, copper sulphate, hydrochloric acid, oxalic acid, ammonium nitrate, ammonium sulfate, fluosilicic acid
Sodium, vulcanized sodium etc.；Inhibitor includes lime, sulfurous acid, sodium humate, sodium sulphate, dimethyldithiocarbamate, cyaniding
Object etc.；Collecting agent includes ethyl xanthogenate, butyl xanthate, diethyldithiocarbamate, isoamyl xanthate, butyl ammonium aerofloat, sulfydryl sodium benzothiazole etc..These are floating
The magnetic iron ore separating effect for selecting medicament deeper to iron concentrate containing high sulphur, especially degree of oxidation is bad, it is difficult to will be in iron ore concentrate
Sulphur is down to less than 0.3%, and the rate of recovery loss of iron ore concentrate is more, below 88%.
The content of the invention
The object of the present invention is to provide a kind of methods that magnetic iron ore is removed from iron concentrate containing high sulphur, and this method is by iron ore concentrate
In sulphur be down to less than 0.3%, and the rate of recovery of iron ore concentrate reaches more than 90%, reduces pollution of the sulphur to air.
The purpose of the present invention is realized as follows.
1st, the processing of raw material；
Iron concentrate containing high sulphur is subjected to ore grinding, -200 mesh is milled to and accounts for 70-85%, then concentrate ore milling product, is concentrated
It is 35-45% to pulp density；
2nd, the activation of magnetic iron ore；
Using the ore pulp that above-mentioned steps obtain as the raw material of flotation magnetic iron ore, using aluminum sulfate or mass ratio 1-2:3-1:
2-1 sodium phosphates, the mixture of ammonium fluosilicate and aluminum sulfate or mass ratio 3-1:The mixture or matter of 1-2 aluminum sulfate and ammonium fluosilicate
Amount compares 1-2:PH regulator and activator of the mixture of 3-2 aluminum sulfate and sodium phosphate as magnetic iron ore, pH regulators and work
Agent dosage is 1.5-4.5kg/t iron concentrate containing high sulphurs, and 3-8min, adjustment pH value 4.5-5.5 are stirred under natural temperature；
3rd, magnetic iron ore roughing；
Using the raw material that above-mentioned steps obtain as roughing flotation raw material, mass ratio 3-2 is added in the raw material:2-1:1-
The collecting agent of 0.5 amylic sodium xanthogenate, sodium ethylxanthate and fourth Sodium Aerofloat as magnetic iron ore, in collector dosage 0.2-
1-5min is stirred under the conditions of 0.8kg/t iron concentrate containing high sulphurs, natural temperature, roughing is carried out and sorts magnetic iron ore, obtain sulfur grade 17-
25%th, the magnetic iron ore rougher concentration of rate of recovery 80-86% and sulfur grade are less than 0.55% sand setting (iron ore concentrate), sand setting conduct
Scan the raw material of recycling magnetic iron ore；
4th, magnetic iron ore is scanned；
The sand setting that above-mentioned steps are obtained scans raw material as flotation, with mass ratio 3-2:2-1:1-0.5 amyl xanthic acid
The collecting agent of sodium, sodium ethylxanthate and fourth Sodium Aerofloat as magnetic iron ore, collector dosage 0.05-0.15kg/t high-sulfurs iron essence
Ore deposit stirs 1-3min under the conditions of natural temperature, is then scanned under natural ph, obtains sulfur grade 8-15%, recycling
Scavenger concentrate and sulfur grade 0.1-0.3%, the full Iron grade of rate 6-11% is more than the 67%, iron ore concentrate of rate of recovery 90-95%；
5th, the rougher concentration and scavenger concentrate obtained above-mentioned steps is incorporated as further selecting the raw material of sulphur.
Compared with prior art, the technology of the present invention effect includes：
This technology is first using appropriate ore grinding, by most of magnetic iron ore monomer dissociation, and cannot overground generation argillization,
On the one hand ore grinding cost is saved, while obtains the Suitable base of removing magnetic iron ore；Using efficient activator and pH tune
It whole dose, is well activated magnetic iron ore mineral surfaces, and controls the charged shape of the mineral surfaces in ore pulp well
State；Using the combined capturing and collecting agent with preferable selectivity and collecting performance, can the magnetic iron ore different to degree of oxidation catch simultaneously
It receives, obtains the fine quality iron concentrate of high-grade and high-recovery and magnetic iron ore rough concentrate, realize magnetic iron ore and magnetic iron ore
Efficiently separate, solve the separation problem of iron concentrate containing high sulphur and magnetic iron ore.
The present invention, i.e., will using efficient pharmaceutical agent combinations using a kind of method that magnetic iron ore is removed from iron concentrate containing high sulphur
Magnetic iron ore is removed from iron ore concentrate, and the sulphur in iron ore concentrate is made to be down to less than 0.3%, and ensures that the rate of recovery of iron ore concentrate exists
More than 90%, the sulfur content of iron ore concentrate is not only reduced, eliminates influence of the sulphur to subsequent job, reduces dirt of the sulphur to air
Dye, and the loss of iron ore concentrate is reduced, iron ore concentrate is become into fine quality iron concentrate.
Description of the drawings
Fig. 1 is the process flow chart for the method for removing magnetic iron ore in the present invention from iron concentrate containing high sulphur.
Specific embodiment
It is described below and specific embodiments of the present invention is fully shown, to enable those skilled in the art to put into practice it
.
Embodiment 1
A kind of method that magnetic iron ore is removed from iron concentrate containing high sulphur, mainly including following components：
1st, the processing of raw material；
Full Iron grade 67.30%, the iron concentrate containing high sulphur containing sulfur grade 2.02% are subjected to ore grinding, -200 mesh is milled to and accounts for
82.1%, then ore milling product is concentrated, is concentrated into ore pulp mass concentration as 40%.
2nd, the activation of magnetic iron ore；
Using the ore pulp that above-mentioned steps obtain as the raw material of flotation magnetic iron ore, using pH of the aluminum sulfate as magnetic iron ore
Regulator and activator, pH regulators and activator level are 2.2kg/t, and 5min is stirred under natural temperature, and adjustment pH value is
5。
3rd, magnetic iron ore roughing；
Using the raw material that above-mentioned steps obtain as roughing flotation raw material, mass ratio 2.5 is added in the raw material:1.5:0.6
The collecting agent of amylic sodium xanthogenate, sodium ethylxanthate and fourth Sodium Aerofloat as magnetic iron ore, collector dosage 0.4kg/t,
It stirs 2min under the conditions of natural temperature, carries out roughing and sort magnetic iron ore, obtain sulfur grade 22.35%, the rate of recovery 85.43%
Magnetic iron ore rougher concentration and the sand setting of sulfur grade 0.32% (iron ore concentrate), the raw material that sand setting is scanned as magnetic iron ore.
4th, magnetic iron ore is scanned；
The sand setting that above-mentioned steps are obtained scans raw material as flotation, with mass ratio 2.5:1.5:0.6 amylic sodium xanthogenate,
The collecting agent of sodium ethylxanthate and fourth Sodium Aerofloat as magnetic iron ore, collector dosage 0.08kg/t, in natural temperature condition
Lower stirring 2min, is then scanned under natural ph, obtain sulfur grade 9.28%, the rate of recovery 6.46% scavenger concentrate and
Sulfur grade 0.18%, full Iron grade 68.40%, the iron ore concentrate of the rate of recovery 92.27%.
5th, the rougher concentration and scavenger concentrate obtained above-mentioned steps is incorporated as further selecting the raw material of sulphur.
Embodiment 2
A kind of method that magnetic iron ore is removed from iron concentrate containing high sulphur, mainly including following components：
1st, the processing of raw material；
Full Iron grade 67.40%, the iron concentrate containing high sulphur containing sulfur grade 3.01% are subjected to ore grinding, -200 mesh is milled to and accounts for
75.5%, then ore milling product is concentrated, is concentrated into pulp density as 38.5%.
2nd, the activation of magnetic iron ore；
Using the ore pulp that above-mentioned steps obtain as the raw material of flotation magnetic iron ore, using pH of the aluminum sulfate as magnetic iron ore
Regulator and activator, pH regulators and activator level are 4kg/t, and 6min is stirred under natural temperature, and adjustment pH value is
4.6。
3rd, magnetic iron ore roughing；
Using the raw material that above-mentioned steps obtain as roughing flotation raw material, mass ratio 3 is added in the raw material:1:0.8 amyl
The collecting agent of sodium xanthogenate, sodium ethylxanthate and fourth Sodium Aerofloat as magnetic iron ore, in collector dosage 0.60kg/t, nature
5min is stirred under temperature conditionss, roughing is carried out and sorts magnetic iron ore, it is yellow to obtain sulfur grade 24.18%, the magnetic of the rate of recovery 83.12%
Iron ore rougher concentration and the sand setting of sulfur grade 0.52% (iron ore concentrate), the raw material that sand setting is scanned as magnetic iron ore.
4th, magnetic iron ore is scanned；
The sand setting that above-mentioned steps are obtained scans raw material as flotation, with mass ratio 3:1:0.8 amylic sodium xanthogenate, ethyl
The collecting agent of sodium xanthogenate and fourth Sodium Aerofloat as magnetic iron ore, collector dosage 0.16kg/t are stirred under the conditions of natural temperature
5min is mixed, is then scanned under natural ph, obtains sulfur grade 14.55%, the scavenger concentrate and sulphur of the rate of recovery 7.61%
Grade 0.29%, full Iron grade 68.60%, the iron ore concentrate of the rate of recovery 90.30%.
5th, the rougher concentration and scavenger concentrate obtained above-mentioned steps is incorporated as further selecting the raw material of sulphur.
Embodiment 3
A kind of method that magnetic iron ore is removed from iron concentrate containing high sulphur, mainly including following components：
1st, the processing of raw material；
Full Iron grade 66.70%, the iron concentrate containing high sulphur containing sulfur grade 1.41% are subjected to ore grinding, -200 mesh is milled to and accounts for
76.5%, then ore milling product is concentrated, is concentrated into pulp density as 41.1%.
2nd, the activation of magnetic iron ore；
Using the ore pulp that above-mentioned steps obtain as the raw material of flotation magnetic iron ore, using mass ratio 1:1 sodium phosphate and sulfuric acid
PH regulator and activator of the mixture of aluminium as magnetic iron ore, pH regulators and activator level are 2.0kg/t, in nature
At a temperature of stir 5min, adjustment pH value is 5.1.
3rd, magnetic iron ore roughing；
Using the raw material that above-mentioned steps obtain as roughing flotation raw material, mass ratio 2 is added in the raw material:2:0.5 amyl
The collecting agent of sodium xanthogenate, sodium ethylxanthate and fourth Sodium Aerofloat as magnetic iron ore, in collector dosage 0.30kg/t, nature
5min is stirred under temperature conditionss, roughing is carried out and sorts magnetic iron ore, it is yellow to obtain sulfur grade 20.93%, the magnetic of the rate of recovery 82.79%
Iron ore rougher concentration and the sand setting of sulfur grade 0.26% (iron ore concentrate), the raw material that sand setting is scanned as magnetic iron ore.
4th, magnetic iron ore is scanned；
The sand setting that above-mentioned steps are obtained scans raw material as flotation, with mass ratio 2:2:0.5 amylic sodium xanthogenate, ethyl
The collecting agent of sodium xanthogenate and fourth Sodium Aerofloat as magnetic iron ore, collector dosage 0.08kg/t are stirred under the conditions of natural temperature
2min is mixed, is then scanned under natural ph, obtains sulfur grade 8.67%, the scavenger concentrate of the rate of recovery 7.95% and sulphur product
Position 0.14%, full Iron grade 67.50%, the iron ore concentrate of the rate of recovery 94.12%.
5th, the rougher concentration and scavenger concentrate obtained above-mentioned steps is incorporated as further selecting the raw material of sulphur.
Embodiment 4
A kind of method that magnetic iron ore is removed from iron concentrate containing high sulphur, mainly including following components：
1st, the processing of raw material；
Full Iron grade 66.50%, the iron concentrate containing high sulphur containing sulfur grade 2.51% are subjected to ore grinding, -200 mesh is milled to and accounts for
78.6%, then ore milling product is concentrated, is concentrated into pulp density as 38.8%.
2nd, the activation of magnetic iron ore；
Using the ore pulp that above-mentioned steps obtain as the raw material of flotation magnetic iron ore, using mass ratio 2:1.5 ammonium fluosilicates and
PH regulator and activator of the mixture of aluminum sulfate as magnetic iron ore, pH regulators and activator level are 2.8kg/t,
5min is stirred under natural temperature, adjustment pH value is 4.9.
3rd, magnetic iron ore roughing；
Using the raw material that above-mentioned steps obtain as roughing flotation raw material, mass ratio 3 is added in the raw material:2:0.8 amyl
The collecting agent of sodium xanthogenate, sodium ethylxanthate and fourth Sodium Aerofloat as magnetic iron ore, in collector dosage 0.45kg/t, nature
6min is stirred under temperature conditionss, roughing is carried out and sorts magnetic iron ore, it is yellow to obtain sulfur grade 24.51%, the magnetic of the rate of recovery 81.43%
Iron ore rougher concentration and the sand setting of sulfur grade 0.50% (iron ore concentrate), the raw material that sand setting is scanned as magnetic iron ore.
4th, magnetic iron ore is scanned；
The sand setting that above-mentioned steps are obtained scans raw material as flotation, with mass ratio 3:2:0.8 amylic sodium xanthogenate, ethyl
The collecting agent of sodium xanthogenate and fourth Sodium Aerofloat as magnetic iron ore, collector dosage 0.12kg/t are stirred under the conditions of natural temperature
3min is mixed, is then scanned under natural ph, obtains sulfur grade 13.16%, the scavenger concentrate and sulphur of the rate of recovery 10.33%
Grade 0.23%, full Iron grade 67.60%, the iron ore concentrate of the rate of recovery 91.11%.
5th, the rougher concentration and scavenger concentrate obtained above-mentioned steps is incorporated as further selecting the raw material of sulphur.
Embodiment 5
A kind of method that magnetic iron ore is removed from iron concentrate containing high sulphur, mainly including following components：
1st, the processing of raw material；
Full Iron grade 67.40%, the iron concentrate containing high sulphur containing sulfur grade 3.01% are subjected to ore grinding, -200 mesh is milled to and accounts for
75.5%, then ore milling product is concentrated, is concentrated into pulp density as 38.5%.
2nd, the activation of magnetic iron ore；
Using the ore pulp that above-mentioned steps obtain as the raw material of flotation magnetic iron ore, using mass ratio 1:3:2 sodium phosphates, fluorine silicon
PH regulator and activator of the mixture of sour ammonium and aluminum sulfate as magnetic iron ore, pH regulators and activator level are
3.4kg/t, stirs 6min under natural temperature, and adjustment pH value is 4.7.
3rd, magnetic iron ore roughing；
Using the raw material that above-mentioned steps obtain as roughing flotation raw material, mass ratio 3 is added in the raw material:1:0.8 amyl
The collecting agent of sodium xanthogenate, sodium ethylxanthate and fourth Sodium Aerofloat as magnetic iron ore, in collector dosage 0.60kg/t, nature
5min is stirred under temperature conditionss, roughing is carried out and sorts magnetic iron ore, it is yellow to obtain sulfur grade 24.98%, the magnetic of the rate of recovery 83.80%
Iron ore rougher concentration and the sand setting of sulfur grade 0.54% (iron ore concentrate), the raw material that sand setting is scanned as magnetic iron ore.
4th, magnetic iron ore is scanned；
The sand setting that above-mentioned steps are obtained scans raw material as flotation, with mass ratio 3:1:0.8 amylic sodium xanthogenate, ethyl
The collecting agent of sodium xanthogenate and fourth Sodium Aerofloat as magnetic iron ore, collector dosage 0.14kg/t are stirred under the conditions of natural temperature
5min is mixed, is then scanned under natural ph, obtains sulfur grade 14.85%, the scavenger concentrate and sulphur of the rate of recovery 7.31%
Grade 0.30%, full Iron grade 68.60%, the iron ore concentrate of the rate of recovery 90.10%.
5th, the rougher concentration and scavenger concentrate obtained above-mentioned steps is incorporated as further selecting the raw material of sulphur.
It should be appreciated that the invention is not limited in the flow and structure that are described above and are shown in the drawings,
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is only limited by appended claim
System.
Claims (4)
- A kind of 1. method that magnetic iron ore is removed from iron concentrate containing high sulphur, which is characterized in that use efficient activator and pH tune Whole dose, magnetic iron ore mineral surfaces are activated, and control the state-of-charge of the mineral surfaces in ore pulp；Using with preferable The combined capturing and collecting agent of selectivity and collecting performance, the magnetic iron ore different to degree of oxidation collecting simultaneously, obtains high-grade and height The magnetic iron ore rougher concentration of the rate of recovery：1) activation of magnetic iron ore：Using efficient activator and pH regulators, activation magnetic iron ore mineral surfaces step is as follows：Iron concentrate containing high sulphur is subjected to ore grinding, -200 mesh is milled to and accounts for 70-85%, then ore milling product is concentrated, is concentrated into ore deposit Slurry mass concentration is 35-45%；Then pH regulator and activator of the aluminum sulfate as magnetic iron ore, pH regulators and work are used Agent dosage is 1.5-4.5kg/t iron concentrate containing high sulphurs, and 3-8min, adjustment pH value 4.5-5.5 are stirred under natural temperature；2) collecting of magnetic iron ore：Using the combined capturing and collecting agent with preferable selectivity and collecting performance, magnetic iron ore step is removed It is as follows：A. magnetic iron ore roughingOre pulp after the activation that above-mentioned steps are obtained adds in mass ratio 3-2 as roughing flotation raw material in the raw material:2-1: The collecting agent of 1-0.5 amylic sodium xanthogenates, sodium ethylxanthate and fourth Sodium Aerofloat as magnetic iron ore, in collector dosage 0.2- 1-5min is stirred under 0.8kg/t iron concentrate containing high sulphurs, natural temperature, roughing is carried out and sorts magnetic iron ore, obtain magnetic iron ore roughing Concentrate and iron ore concentrate sand setting；B. the raw material that iron ore concentrate sand setting is scanned as magnetic iron ore；C. magnetic iron ore is scannedRaw material is scanned using iron ore concentrate sand setting as flotation, with mass ratio 3-2:2-1:1-0.5 amylic sodium xanthogenate, ethoxy-dithioformic acid The collecting agent of sodium and fourth Sodium Aerofloat as magnetic iron ore, collector dosage 0.05-0.15kg/t iron concentrate containing high sulphurs, in natural temperature Lower stirring 1-3min, is then scanned under natural ph, obtains scavenger concentrate and iron ore concentrate；D. iron ore concentrate is I classes of C67 or II class standard；E. magnetic iron ore rougher concentration and scavenger concentrate are incorporated as further selecting the raw material of sulphur.
- 2. the method for magnetic iron ore is removed from iron concentrate containing high sulphur according to claim 1, which is characterized in that using mass ratio 1-2:3-1:PH regulator and activator of the mixture of 2-1 sodium phosphates, ammonium fluosilicate and aluminum sulfate as magnetic iron ore.
- 3. the method for magnetic iron ore is removed from iron concentrate containing high sulphur according to claim 1, which is characterized in that using mass ratio 3-1:PH regulator and activator of the mixture of 1-2 aluminum sulfate and ammonium fluosilicate as magnetic iron ore.
- 4. the method for magnetic iron ore is removed from iron concentrate containing high sulphur according to claim 1, which is characterized in that using mass ratio 1-2:PH regulator and activator of the mixture of 3-2 aluminum sulfate and sodium phosphate as magnetic iron ore.
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| CN111495601A (en) * | 2020-04-20 | 2020-08-07 | 武汉理工大学 | Combined collecting agent and method for removing pyrite and pyrrhotite from high-sulfur iron concentrate |
| CN114609000A (en) * | 2022-05-11 | 2022-06-10 | 矿冶科技集团有限公司 | Judgment method for reducing magnetic effectiveness of pyrrhotite and application |
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