CN109127147A - A kind of beneficiation method of high phosphorus iron ore concentrate dephosphorus iron extraction - Google Patents
A kind of beneficiation method of high phosphorus iron ore concentrate dephosphorus iron extraction Download PDFInfo
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- CN109127147A CN109127147A CN201810796318.3A CN201810796318A CN109127147A CN 109127147 A CN109127147 A CN 109127147A CN 201810796318 A CN201810796318 A CN 201810796318A CN 109127147 A CN109127147 A CN 109127147A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 169
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 84
- 239000012141 concentrate Substances 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 35
- DPTATFGPDCLUTF-UHFFFAOYSA-N phosphanylidyneiron Chemical compound [Fe]#P DPTATFGPDCLUTF-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000000605 extraction Methods 0.000 title claims abstract description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000011574 phosphorus Substances 0.000 claims abstract description 38
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 38
- 239000006260 foam Substances 0.000 claims abstract description 37
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 36
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 35
- 238000003756 stirring Methods 0.000 claims abstract description 32
- 239000002131 composite material Substances 0.000 claims abstract description 27
- 239000000837 restrainer Substances 0.000 claims abstract description 27
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims abstract description 24
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000012452 mother liquor Substances 0.000 claims abstract description 16
- 238000002386 leaching Methods 0.000 claims abstract description 14
- 239000002253 acid Substances 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 238000003723 Smelting Methods 0.000 claims abstract description 12
- 238000003801 milling Methods 0.000 claims abstract description 12
- 238000000227 grinding Methods 0.000 claims abstract description 11
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 7
- 239000011707 mineral Substances 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 229920002472 Starch Polymers 0.000 claims description 14
- 235000019698 starch Nutrition 0.000 claims description 14
- 239000008107 starch Substances 0.000 claims description 14
- 239000000047 product Substances 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 10
- 229910001608 iron mineral Inorganic materials 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 5
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 5
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 5
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000005642 Oleic acid Substances 0.000 claims description 5
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 5
- DTOSIQBPPRVQHS-PDBXOOCHSA-N alpha-linolenic acid Chemical compound CC\C=C/C\C=C/C\C=C/CCCCCCCC(O)=O DTOSIQBPPRVQHS-PDBXOOCHSA-N 0.000 claims description 5
- 235000020661 alpha-linolenic acid Nutrition 0.000 claims description 5
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 claims description 5
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 5
- 239000004571 lime Substances 0.000 claims description 5
- 229960004488 linolenic acid Drugs 0.000 claims description 5
- KQQKGWQCNNTQJW-UHFFFAOYSA-N linolenic acid Natural products CC=CCCC=CCC=CCCCCCCCC(O)=O KQQKGWQCNNTQJW-UHFFFAOYSA-N 0.000 claims description 5
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 5
- 229910021646 siderite Inorganic materials 0.000 claims description 5
- 239000013589 supplement Substances 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 4
- 101001131990 Homo sapiens Peroxidasin homolog Proteins 0.000 claims description 2
- 102100034601 Peroxidasin homolog Human genes 0.000 claims description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 5
- 230000000052 comparative effect Effects 0.000 description 9
- 239000003112 inhibitor Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
- 229910052585 phosphate mineral Inorganic materials 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000013019 agitation Methods 0.000 description 3
- 229910052635 ferrosilite Inorganic materials 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000012188 paraffin wax Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000000344 soap Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000003784 tall oil Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 229910052586 apatite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 229910052587 fluorapatite Inorganic materials 0.000 description 1
- 229940077441 fluorapatite Drugs 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
-
- 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
- B03D1/02—Froth-flotation processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/11—Removing sulfur, phosphorus or arsenic other than by roasting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/12—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions
-
- 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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/06—Depressants
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
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- Mechanical Engineering (AREA)
- Metallurgy (AREA)
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- Inorganic Chemistry (AREA)
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Abstract
The present invention relates to a kind of beneficiation methods of high phosphorus iron ore concentrate dephosphorus iron extraction, belong to technical field of beneficiation.Mineral aggregate by high phosphorus iron ore concentrate ore grinding to -74 μm obtains ore milling product；Obtained ore milling product is sized mixing, sodium hydroxide, composite restrainer, high-efficient collecting agent is added and carries out roughing, obtains roughing foam and roughing underflow；Sodium hydroxide, composite restrainer, high-efficient collecting agent is added to obtained roughing underflow, is scanned after stirring, obtain scanning foam and scans underflow；By roughing foam and scans foam and merge to obtain high phosphorus foam ore pulp；Hydrochloric acid or nitric acid acidleach is added in high phosphorus foam ore pulp, phosphorous acidleach mother liquor and filter residue is obtained by filtration；It scans underflow and filter residue merges into final iron ore concentrate, can be used as iron-smelting raw material.The problems such as this method can overcome iron loss rate present in floatation dephosphorization big, and iron recovery is low, and the problems such as big, the at high cost, acid leaching solution that can effectively avoid in chemical method dephosphorization that there are acid consumptions is big to the corrosivity of equipment.
Description
Technical field
The present invention relates to a kind of beneficiation methods of high phosphorus iron ore concentrate dephosphorus iron extraction, belong to technical field of beneficiation.
Background technique
China's iron ore deposit is rich without richness, and iron ore has the characteristics that poor, thin, miscellaneous.Recent statistics statistics indicate that, China is
Possess and finds out that iron ore deposit reserves are 62,400,000,000 tons, wherein 97% is poor miscellaneous mine, and composition of ores and structure are more complicated, because
This, China's overwhelming majority iron ore all needs ore dressing that could be used for ironmaking production.Since domestic technique of preparing level is relatively low, lack
It is weary production high quality iron ore concentrate key technology and means so that the of poor quality of China's iron ore raw material, iron ore concentrate supply gap compared with
Greatly.Therefore, it by the research of technique of Quality improvement and impurities reduction of iron concentrate, produces the high-quality iron ore concentrate of low impurity content, improve domestic iron
The competitiveness of concentrate is to realize the only way which must be passed of domestic iron ore mine sustainable development.Phosphorus is most important objectionable impurities member in iron ore concentrate
One of element.In iron ore concentrate phosphorus component mainly in the form of apatite or carbonate fluorapatite with other mineral intergrowths, if high phosphorus iron ore concentrate
Without dephosphorization directly as iron-smelting raw material, the pig iron will cannot function as qualified steel-making because phosphorous high with " cold brittleness "
Raw material.Due to the above-mentioned harm of phosphorus component, containing for phosphorus component in raw materials for metallurgy should be reduced as far as possible in steel smelting procedure
Amount, if iron ore concentrate can remove in advance phosphorus therein before entering furnace and smelting, this will make the smelting cost of steel significantly
It reduces.Therefore, removing the phosphorus in iron ore concentrate is one of the critical issue for improving steel quality, realizes phosphorus ore containing in iron ore concentrate
It is removed in depth, the needs for making product utmostly meet market become alleviation imported Fe ore pressure and alleviate domestic mine institute
The important measure of difficulties situation.
Currently, the method for iron ore dephosphorization mainly has beneficiation method, chemical method, smelting process and Biodephosphorization side
Method.Wherein floatation dephosphorization is more commonly used beneficiation method at present, but generally existing iron loss rate is big, and iron recovery is low etc. asks
Topic.If when using high phosphorus iron ore concentrate as raw material, this problem will become especially prominent, so that floatation removes high phosphorus iron ore concentrate
In phosphorus be industrially difficult to effectively be implemented.Chemical method dephosphorization be exactly with sulfuric acid, nitric acid or hydrochloric acid to iron ore into
Row acidleach dephosphorization.It is high that this method has dephosphorization rate, and contains phosphorus component in ore without complete monomer dissociation, and what is be exposed contains
Phosphorus component is contacted with acid leaching liquor can achieve the purpose that dephosphorization, but that there are acid consumptions is big, at high cost, sour for chemical method dephosphorization
The problems such as property leachate is big to the corrosivity of equipment, while it being easy to cause the solution of soluble iron mineral in ore, to cause
Iron loss.In smelting process dephosphorizing process, generally existing dephosphorization rate is low, operating environment is poor, raw material at high cost, to high content of phosphorus
The problems such as dephosphorization difficulty.Oxidisability and alkalinity need to be added before entering electric furnace or converter in molten iron when such as liquid iron pretreatment dephosphorizing
The basic slag of oxide or high oxidative promotes itself and the mesh for reacting and reaching preparatory dephosphorization containing phosphorus component in molten iron
's.Although this method dephosphorization effect is preferable, higher cost, and the temperature drop of molten iron is big, to the dephosphorization of molten iron of high content of phosphorus also pole
For difficulty.Biodephosphorization method is difficult to extensive in actual production since the Spawn incubation period is long, build environment is harsh
Using.
Summary of the invention
For the above-mentioned problems of the prior art and deficiency, the present invention provides a kind of choosing of high phosphorus iron ore concentrate dephosphorus iron extraction
Mine method.The problems such as this method can overcome iron loss rate present in floatation dephosphorization big, and iron recovery is low, and can effectively keep away
The problems such as big, at high cost, acid leaching solution of exempting from chemical method dephosphorization that there are acid consumptions is big to the corrosivity of equipment, realizes high phosphorus
The promotion of effective removing and Iron grade in iron ore concentrate containing phosphorus component.The present invention is achieved through the following technical solutions.
A kind of beneficiation method of high phosphorus iron ore concentrate dephosphorus iron extraction, the specific steps of which are as follows:
High phosphorus iron ore concentrate ore grinding to -74 μm of mineral aggregate content is accounted for 75~95% and obtains ore milling product, ore grinding mass concentration by step 1
For 50%~65wt%；
It is 25~35wt% that step 2, the ore milling product for obtaining step 1, which are sized mixing to solid masses concentration, and sodium hydroxide control is added
The pH value of ore pulp solution is 9~10, stirs 4~8min, and 250~500g/t of composite restrainer is then added, and stirs 5~15min,
High-efficient collecting agent MG50~150g/t is added, roughing is carried out after stirring 5~15min, obtains roughing foam and roughing underflow；
The pH value that sodium hydroxide control ore pulp solution is added in step 3, the roughing underflow obtained to step 2 is 9~10, stirring 4~
Then 100~200g/t of composite restrainer is added in 8min, stir 5~15min, add high-efficient collecting agent MG20~80g/t,
It is scanned after 5~15min of stirring, obtain scanning foam and scans underflow；
Step 4, the foam of scanning for obtaining roughing foam and step 3 that step 2 obtains merge to obtain high phosphorus foam ore pulp；It will be high
The hydrochloric acid or nitric acid of 20~30wt% of mass concentration is added in phosphorus foam ore pulp, sizes mixing and carries out acidleach, acid to 2~5 ﹕ 1mL/g of liquid-solid ratio
Make the pH value holding 2 of ore pulp hereinafter, 30~120min of leaching, is obtained by filtration and contains by the way that hydrochloric acid or nitric acid is added during leaching
Phosphoric acid soaks mother liquor and filter residue；Underflow that step 3 obtained scan and filter residue merge into final iron ore concentrate, can be used as iron-smelting raw material；
Composite restrainer is the mixture of 3~5 ﹕ of molar ratio 1 starch and sodium lignin sulfonate in above-mentioned steps 2 and step 3, efficiently
Collecting agent MG is hybrid collector composed by 8 ﹕ of molar ratio, 1 oleic acid and linolenic acid.
High phosphorus iron ore concentrate phosphorus content is 0.4wt% or more in the step 1, and iron mineral is mainly magnet in high phosphorus iron ore concentrate
The one or more of mine, hematite-limonite or siderite.
The phosphorous acidleach mother liquor supplement acidity of the step 4, which returns in step 4, carries out acidleach, soaks to phosphorous acidleach mother liquor
Rear addition lime not up to standard carries out purification discharge out.
Above-mentioned g/t refers to that the grams of reagent is added in high phosphorus hematite-limonite stone raw material per ton.
The beneficial effects of the present invention are:
1, effectively inhibit iron mineral using composite restrainer, realize the effective de- of content Phosphate minerals using high-efficient collecting agent MG
It removes, overcomes the problems such as iron loss rate present in floatation dephosphorization is big, and iron recovery is low.
2, it is recycled by residual acid in acidity during control acidleach and leachate, it is effective to remove flotation bubble
The problems such as phosphorus component in foam, to avoid in acidleach dephosphorization that there are acid consumptions big, at high cost.Meanwhile the filter residue of acidleach is filled
Divide and utilize, increases the rate of recovery of iron, Iron grade is also improved in final iron ore concentrate.
3, process of the present invention is short, at low cost, easy to operate, be able to achieve in high phosphorus iron ore concentrate containing phosphorus component it is effective removing and
The promotion of Iron grade.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
With reference to the accompanying drawings and detailed description, the invention will be further described.
Embodiment 1
As shown in Figure 1, the beneficiation method of the high phosphorus iron ore concentrate dephosphorus iron extraction, the specific steps of which are as follows:
Step 1, by high phosphorus iron ore concentrate, (high phosphorus iron ore concentrate phosphorus content is 0.45wt%, Iron grade 52.45wt%, high phosphorus iron ore concentrate
Middle iron mineral is mainly magnetic iron ore (35.25wt%), hematite-limonite (52.50wt%) and siderite (4.13wt%), ferrosilite
8.12%) the mineral aggregate content of ore grinding to -74 μm accounts for 80% and obtains ore milling product, and ore grinding mass concentration is 60wt%；
It is 30wt% that step 2, the ore milling product for obtaining step 1, which are sized mixing to solid masses concentration, and sodium hydroxide is added and controls ore pulp
The pH value of solution is 9.5, stirs 4min, and composite restrainer 300g/t is then added, and stirs 8min, adds high-efficient collecting agent
MG100g/t carries out roughing after stirring 5min, obtains roughing foam and roughing underflow；
The pH value that sodium hydroxide control ore pulp solution is added in step 3, the roughing underflow obtained to step 2 is 9, stirs 4min, so
Composite restrainer 150g/t is added afterwards, stirs 6min, adds high-efficient collecting agent MG50g/t, is scanned, is obtained after stirring 5min
It is (phosphorous for 0.13wt%, Iron grade 55.45wt%) to scanning foam and scanning underflow；
Step 4, by roughing foam and step 3 that step 2 obtains obtain scan foam merge to obtain high phosphorus foam ore pulp it is (phosphorous
0.96wt%, Iron grade 47.66wt%)；The hydrochloric acid of mass concentration 30wt% will be added after high phosphorus foam flowsheet of slurry agitation 8min, adjusts
Slurry carries out acidleach to 3 ﹕ 1mL/g of liquid-solid ratio, and passing through addition hydrochloric acid during acidleach makes the pH value of ore pulp keep 1.5, leaching
60min, mixing speed are 200 revs/min, and phosphorous acidleach mother liquor and filter residue is obtained by filtration；What step 3 obtained scans underflow and filter
Slag (phosphorus content 0.09wt%, Iron grade 52.52wt%) merges into final iron ore concentrate, can be used as iron-smelting raw material；
Composite restrainer is the mixture of 3 ﹕ of molar ratio 1 starch and sodium lignin sulfonate in above-mentioned steps 2 and step 3, is efficiently caught
Receiving agent MG is hybrid collector composed by 8 ﹕ of molar ratio, 1 oleic acid and linolenic acid.
The phosphorous acidleach mother liquor supplement salt acid pH of above-mentioned steps 4 is maintained at 1.2, carries out acidleach until returning in step 4
Circulation 4 times, addition lime carries out purification discharge after the leaching of phosphorous acidleach mother liquor is not up to standard.
Final iron ore concentrate testing result is as shown in table 1 in the present embodiment.
Table 1
Comparative example 1
Composite restrainer in the present embodiment 1 and efficiently is replaced using conventional starch inhibitor and conventional enuatrol collecting agent
Collecting agent MG；Conventional starch inhibitor additional amount is 800g/t in step 2, and conventional enuatrol collecting agent additional amount is
200g/t；Conventional starch inhibitor additional amount in step 3 is 400g/t, and conventional enuatrol collecting agent additional amount is
100g/t, other parameters are constant.It is 53.35wt% that Iron grade in final iron ore material is obtained in comparative example 1, phosphorous
0.28wt%, iron recovery 97.15%, dephosphorization rate are 60.45% (circulation 4 times).
It can be seen that the use of composite restrainer and high-efficient collecting agent MG in the present invention from the present embodiment 1 and comparative example 1
Amount is few, and composite restrainer is added in the present invention and high-efficient collecting agent MG can realize effective removing of content Phosphate minerals, and dephosphorization rate compares
It is higher than embodiment 1.Production cost of the present invention reduces 12 yuan/ton of raw ores.
Embodiment 2
As shown in Figure 1, the beneficiation method of the high phosphorus iron ore concentrate dephosphorus iron extraction, the specific steps of which are as follows:
Step 1, by high phosphorus iron ore concentrate, (high phosphorus iron ore concentrate phosphorus content is 0.65wt%, Iron grade 57.58wt%, high phosphorus iron ore concentrate
Middle iron mineral is mainly magnetic iron ore (55.69wt%), hematite-limonite (28.8wt%) and siderite (10.41wt%), ferrosilite
5.1%) the mineral aggregate content of ore grinding to -74 μm accounts for 95% and obtains ore milling product, and ore grinding mass concentration is 65wt%；
It is 35wt% that step 2, the ore milling product for obtaining step 1, which are sized mixing to solid masses concentration, and sodium hydroxide is added and controls ore pulp
The pH value of solution is 10, stirs 6min, and composite restrainer 250g/t is then added, and stirs 5min, adds high-efficient collecting agent
MG150g/t carries out roughing after stirring 15min, obtains roughing foam and roughing underflow；
The pH value that sodium hydroxide control ore pulp solution is added in step 3, the roughing underflow obtained to step 2 is 10, stirs 6min, so
Composite restrainer 100g/t is added afterwards, stirs 15min, adds high-efficient collecting agent MG80g/t, is scanned after stirring 15min,
It obtains scanning foam and scans underflow (phosphorous 0.19wt%, Iron grade 60.75wt%)；
Step 4, by roughing foam and step 3 that step 2 obtains obtain scan foam merge to obtain high phosphorus foam ore pulp it is (phosphorous
For 1.36wt%, Iron grade 52.48wt%)；The nitric acid of mass concentration 20wt% will be added after high phosphorus foam flowsheet of slurry agitation 8min,
It sizes mixing and carries out acidleach to 2 ﹕ 1mL/g of liquid-solid ratio, passing through addition nitric acid during acidleach makes the pH value of ore pulp keep 2, leaching
120min, mixing speed are 200 revs/min, and phosphorous acidleach mother liquor and filter residue is obtained by filtration；Underflow that step 3 obtained scan with
Filter residue (phosphorus content 0.14wt%, Iron grade 57.02wt%) merges into final iron ore concentrate, can be used as iron-smelting raw material；
Composite restrainer is the mixture of 5 ﹕ of molar ratio 1 starch and sodium lignin sulfonate in above-mentioned steps 2 and step 3, is efficiently caught
Receiving agent MG is hybrid collector composed by 8 ﹕ of molar ratio, 1 oleic acid and linolenic acid.
The phosphorous acidleach mother liquor supplement salt acid pH of above-mentioned steps 4 is maintained at 1.1, carries out acidleach until returning in step 4
Circulation 4 times, addition lime carries out purification discharge after the leaching of phosphorous acidleach mother liquor is not up to standard.
Final iron ore concentrate testing result is as shown in table 2 in the present embodiment.
Table 2
Comparative example 2
Using conventional starch inhibitor and conventional oxidized paraffin wax soap collecting agent replace composite restrainer in the present embodiment 2 and
High-efficient collecting agent MG；Conventional starch inhibitor additional amount is 800g/t in step 2, and conventional oxidized paraffin wax soap additional amount is
500g/t；Conventional starch inhibitor additional amount in step 3 is 400g/t, and conventional oxidized paraffin wax soap collecting agent additional amount is
250g/t, other parameters are constant.It is 58.45wt% that Iron grade in final iron ore material is obtained in comparative example 2, phosphorous
0.38wt%, iron recovery 97.12%, dephosphorization rate are 58.45% (circulation 4 times).
It can be seen that the use of composite restrainer and high-efficient collecting agent MG in the present invention from the present embodiment 2 and comparative example 2
Amount is few, and composite restrainer is added in the present invention and high-efficient collecting agent MG can realize effective removing of content Phosphate minerals, and dephosphorization rate compares
It is higher than embodiment 2.Production cost of the present invention reduces 15 yuan/ton of raw ores.
Embodiment 3
As shown in Figure 1, the beneficiation method of the high phosphorus iron ore concentrate dephosphorus iron extraction, the specific steps of which are as follows:
Step 1, by high phosphorus iron ore concentrate, (high phosphorus iron ore concentrate phosphorus content is 1.05wt%, Iron grade 60.18wt%, high phosphorus iron ore concentrate
Middle iron mineral is mainly magnetic iron ore (65.54wt%), hematite-limonite (20.9wt%) and siderite (7.46wt%), ferrosilite 6.1%)
The mineral aggregate content of ore grinding to -74 μm accounts for 75% and obtains ore milling product, and ore grinding mass concentration is 50wt%；
It is 25wt% that step 2, the ore milling product for obtaining step 1, which are sized mixing to solid masses concentration, and sodium hydroxide is added and controls ore pulp
The pH value of solution is 9, stirs 8min, and composite restrainer 500g/t is then added, and stirs 15min, adds high-efficient collecting agent
MG50g/t carries out roughing after stirring 10min, obtains roughing foam and roughing underflow；
The pH value that sodium hydroxide control ore pulp solution is added in step 3, the roughing underflow obtained to step 2 is 9.5, stirs 8min,
Then composite restrainer 200g/t is added, stirs 5min, adds high-efficient collecting agent MG20g/t, is swept after stirring 10min
Choosing obtains scanning foam and scans underflow (phosphorous 0.29wt%, Iron grade 63.75wt%)；
Step 4, by roughing foam and step 3 that step 2 obtains obtain scan foam merge to obtain high phosphorus foam ore pulp it is (phosphorous
For 2.13wt%, Iron grade 54.53wt%)；The nitric acid of mass concentration 25wt% will be added after high phosphorus foam flowsheet of slurry agitation 8min,
It sizes mixing and carries out acidleach to 5 ﹕ 1mL/g of liquid-solid ratio, passing through addition hydrochloric acid during acidleach makes the pH value of ore pulp keep 1.5, stirring leaching
30min out, mixing speed are 200 revs/min, and phosphorous acidleach mother liquor and filter residue is obtained by filtration；Underflow that step 3 obtained scan with
Filter residue (phosphorus content 0.2wt%, Iron grade 59.47wt%) merges into final iron ore concentrate, can be used as iron-smelting raw material；
Composite restrainer is the mixture of 4 ﹕ of molar ratio 1 starch and sodium lignin sulfonate in above-mentioned steps 2 and step 3, is efficiently caught
Receiving agent MG is hybrid collector composed by 8 ﹕ of molar ratio, 1 oleic acid and linolenic acid.
The phosphorous acidleach mother liquor supplement salt acid pH of above-mentioned steps 4 is maintained at 1.1, carries out acidleach until returning in step 4
Circulation 5 times, addition lime carries out purification discharge after the leaching of phosphorous acidleach mother liquor is not up to standard.
Final iron ore concentrate testing result is as shown in table 3 in the present embodiment.
Table 3
Comparative example 3
Composite restrainer in the present embodiment 3 and efficiently is replaced using conventional starch inhibitor and conventional tall oil collecting agent
Collecting agent MG；Conventional starch inhibitor additional amount is 900g/t in step 2, and conventional tall oil collecting agent additional amount is 500
g/t；Conventional starch inhibitor additional amount in step 3 is 450g/t, and conventional tall oil collecting agent additional amount is 250g/t,
Other parameters are constant.It is 61.87wt%, phosphorous 0.38wt%, iron time that Iron grade in final iron ore material is obtained in comparative example 3
Yield is 98.13%, and dephosphorization rate is 59.56% (circulation 5 times).
It can be seen that the use of composite restrainer and high-efficient collecting agent MG in the present invention from the present embodiment 3 and comparative example 3
Amount is few, and composite restrainer is added in the present invention and high-efficient collecting agent MG can realize effective removing of content Phosphate minerals, and dephosphorization rate compares
It is higher than embodiment 3.Production cost of the present invention reduces 14 yuan/ton of raw ores.
In conjunction with attached drawing, the embodiment of the present invention is explained in detail above, but the present invention is not limited to above-mentioned
Embodiment within the knowledge of a person skilled in the art can also be before not departing from present inventive concept
Put that various changes can be made.
Claims (3)
1. a kind of beneficiation method of high phosphorus iron ore concentrate dephosphorus iron extraction, it is characterised in that specific step is as follows:
High phosphorus iron ore concentrate ore grinding to -74 μm of mineral aggregate content is accounted for 75~95% and obtains ore milling product, ore grinding mass concentration by step 1
For 50%~65wt%；
It is 25~35wt% that step 2, the ore milling product for obtaining step 1, which are sized mixing to solid masses concentration, and sodium hydroxide control is added
The pH value of ore pulp solution is 9~10, stirs 4~8min, and 250~500g/t of composite restrainer is then added, and stirs 5~15min,
High-efficient collecting agent MG50~150g/t is added, roughing is carried out after stirring 5~15min, obtains roughing foam and roughing underflow；
The pH value that sodium hydroxide control ore pulp solution is added in step 3, the roughing underflow obtained to step 2 is 9~10, stirring 4~
Then 100~200g/t of composite restrainer is added in 8min, stir 5~15min, add high-efficient collecting agent MG20~80g/t,
It is scanned after 5~15min of stirring, obtain scanning foam and scans underflow；
Step 4, the foam of scanning for obtaining roughing foam and step 3 that step 2 obtains merge to obtain high phosphorus foam ore pulp；It will be high
The hydrochloric acid or nitric acid of 20~30wt% of mass concentration is added in phosphorus foam ore pulp, sizes mixing and carries out acidleach, acid to 2~5 ﹕ 1mL/g of liquid-solid ratio
Make the pH value holding 2 of ore pulp hereinafter, 30~120min of leaching, is obtained by filtration and contains by the way that hydrochloric acid or nitric acid is added during leaching
Phosphoric acid soaks mother liquor and filter residue；Underflow that step 3 obtained scan and filter residue merge into final iron ore concentrate, can be used as iron-smelting raw material；
Composite restrainer is the mixture of 3~5 ﹕ of molar ratio 1 starch and sodium lignin sulfonate in above-mentioned steps 2 and step 3, efficiently
Collecting agent MG is hybrid collector composed by 8 ﹕ of molar ratio, 1 oleic acid and linolenic acid.
2. the beneficiation method of high phosphorus iron ore concentrate dephosphorus iron extraction according to claim 1, it is characterised in that: in the step 1
High phosphorus iron ore concentrate phosphorus content is 0.4wt% or more, and iron mineral is mainly magnetic iron ore, hematite-limonite or siderite in high phosphorus iron ore concentrate
One or more.
3. the beneficiation method of high phosphorus iron ore concentrate dephosphorus iron extraction according to claim 1, it is characterised in that: the step 4
Phosphorous acidleach mother liquor supplement acidity, which returns in step 4, carries out acidleach, adds lime after the leaching of phosphorous acidleach mother liquor is not up to standard
Carry out purification discharge.
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