CN107460305A - A kind of design method of iron ore concentrate - Google Patents
A kind of design method of iron ore concentrate Download PDFInfo
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- CN107460305A CN107460305A CN201610373668.XA CN201610373668A CN107460305A CN 107460305 A CN107460305 A CN 107460305A CN 201610373668 A CN201610373668 A CN 201610373668A CN 107460305 A CN107460305 A CN 107460305A
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- Prior art keywords
- iron ore
- ore concentrate
- sample
- design method
- crm
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 123
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 61
- 239000012141 concentrate Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000013461 design Methods 0.000 title claims abstract description 27
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- 229910052681 coesite Inorganic materials 0.000 claims description 8
- 229910052906 cristobalite Inorganic materials 0.000 claims description 8
- 229910052682 stishovite Inorganic materials 0.000 claims description 8
- 229910052905 tridymite Inorganic materials 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- 238000005204 segregation Methods 0.000 claims description 7
- 229910052593 corundum Inorganic materials 0.000 claims description 6
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 6
- 238000013112 stability test Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 238000009614 chemical analysis method Methods 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 6
- 238000004458 analytical method Methods 0.000 abstract description 3
- 238000000227 grinding Methods 0.000 abstract description 3
- 238000007885 magnetic separation Methods 0.000 abstract description 3
- 230000018044 dehydration Effects 0.000 abstract description 2
- 238000006297 dehydration reaction Methods 0.000 abstract description 2
- 238000011156 evaluation Methods 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000003723 Smelting Methods 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 235000003283 Pachira macrocarpa Nutrition 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 240000001085 Trapa natans Species 0.000 description 1
- 235000014364 Trapa natans Nutrition 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- KAEAMHPPLLJBKF-UHFFFAOYSA-N iron(3+) sulfide Chemical compound [S-2].[S-2].[S-2].[Fe+3].[Fe+3] KAEAMHPPLLJBKF-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- -1 preparation method Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000009165 saligot Nutrition 0.000 description 1
- 238000010206 sensitivity analysis Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/223—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
Abstract
The present invention relates to iron ore concentrate field, specially a kind of design method of iron ore concentrate.The design method includes：Design of Chemical Composition → tri- section are broken → and ore grinding → tri- stages of magnetic separation → dehydration groove → filtering → initial survey → sample is mixed → and uniformity testing → definite value analysis → data processing → packs → sells.The iron ore concentrate obtained using this method, there is the one or more sufficiently uniform and fine material or material for determining characteristic value, calibration instrument, evaluation measuring method can be used for and give material assignment.
Description
Technical field
The present invention relates to iron ore concentrate field, specially a kind of design method of iron ore concentrate.
Background technology
Iron ore divides from main component can at least be divided into：Limonite, principle active component Fe2O3；Magnetic iron ore, it is main
Want active ingredient Fe3O4；Water chestnut (Huang) iron ore, principle active component Fe2S3；Pure iron ore deposit, principle active component Fe simple substance, Yi Jishang
State the mixed rawore, the associated minerals of other ferrous metal, etc. of mineral reserve.
Either above-mentioned any iron ore, it all cannot be used directly for smelting when just mined, it is necessary to
Handled by processes such as crushing, ore dressing, washups, could be as the primary raw material of manUfaCtUre of pig iron.Mining industry industry is often in this
While being used directly for pig iron smelting, the higher Iron Ore Powder of iron-holder percentage turns into iron ore concentrate.
1. iron content
This is most important in all qualitative indexs, and being generally considered to be for more than 60% content is high-grade, and China is just
This high grade iron ore of famine, almost rely on from Brazil, Australia, India's import.
2. Harmful ingredient content
Harmful components mainly include sulphur, phosphorus, silica, alundum (Al2O3) etc., and this content is lower to mean ore
It is better, easier smelting.
3. granularity
The index is limited only to unsintered iron ore, refers to the equal diameter of product of ore grain.Typically by crushing in 5-
10 millimeters optimal, and excessive too small all bad, neither convenience in transport root is unfavorable for producing.
4. moisture content
In order to facilitate transport, all finished product iron ores all must receive water filling before shipment entrucking transport.General moisture content
Below 8%.
In iron polymetallic ore, iron rough concentrate can be to obtain iron ore concentrate after magnetic separation twice, and the grade of iron ore concentrate is always
In 60-61%, the rate of recovery is 65% or so.Therefore, it is necessary to improve to the preparation technology of iron ore concentrate, to improve iron ore concentrate
Grade and the rate of recovery, increase economic efficiency.
The content of the invention
It is an object of the invention to provide a kind of design method of iron ore concentrate, the iron ore concentrate obtained using this method, has
The one or more sufficiently uniform and fine material or material for determining characteristic value, calibration instrument, evaluation measurement side can be used for
Method and give material assignment.
The technical scheme is that：
A kind of design method of iron ore concentrate, the design method include Design of Chemical Composition, preparation method, particle segregation inspection
Test, uniformity testing and stability test, it is specific as follows：
(1) Design of Chemical Composition (wt%)
By weight percentage, TFe：65.0-70.0；FeO：25.0-30.0；SiO2：3.0-7.0；Al2O3：0.05-
0.2；CaO：0.1-0.5；MgO：0.1-0.5；MnO：0.03-0.08；TiO2：0.01-0.05；P：0.005-0.02；S：0.01-
0.2；
(2) preparation method
The iron ore concentrate for obtaining the chemical composition is taken, through 100-120 DEG C of baking 6-10h of electrically heated drying cabinet, is ground with sampling machine
Afterwards, sieve, choose the mesh sample of granularity >=180, manually mixed；
(3) particle segregation is examined
Sample is divided into three sieve sections：180-200 mesh, 200-240 mesh,>240 mesh, respectively to three sieve section TFe,
SiO2, P, S analyzed；
(4) uniformity testing
Randomly select 20 groups of samples, SiO2、CaO、MgO、MnO、TiO2, P using Xray fluorescence spectrometer determine, TFe,
FeO is determined using chemical analysis method, and S uses infrared absorption determining, Al2O3Determined using ICP method；
(5) stability test
Iron ore concentrate sample is determined three times respectively, according to GB/T15000.3 requirement, if condition meets：
|xCRM-xmean|≤U, then have good stability, here
In formula, xCRMFor CRM characteristic magnitude, uCRMFor CRM standard uncertainty, xmeanFor the characteristic quantity of observed value
Value, umeanFor standard uncertainty.
The design method of described iron ore concentrate, in step (3), when iron ore concentrate sieve at three it is varigrained slightly inclined in section
During analysis, sample is mixed repeatedly, sample is reached uniform；Subsequent uniformity testing data and constituent parts value data,
Until fully proving that sample is uniform.
The design method of described iron ore concentrate, in step (3), three groups of samples are randomly selected, metallic iron are detected, really
Metallic iron is determined to iron ore concentrate sample homogeneity, the influence of stability.
The design method of described iron ore concentrate, in step (5), under 95% fiducial probability, k=2, stability is carried out
Investigate.
The design method of described iron ore concentrate, in step (5), the difference of detected value and recommendation is respectively less than or equal to standard value
Expanded uncertainty, it is believed that have good stability.
Advantages of the present invention and beneficial effect are：
1st, iron ore concentrate of the present invention adds CaO, TiO2 the two elements, and strong number is effectively provided for research and production
According to support.
2nd, the present invention carries out accurate definite value using distinct methods to each element, carries out ore dressing, grinding by design, mixes
, sieve, ensure that iron ore concentrate sample has good uniformity, sample presses grading, and guarantee has relatively low metallic iron, reduces
Sample is segregated.
Embodiment
In specific implementation process, the design method of iron ore concentrate of the present invention includes：Design of Chemical Composition → tri- section are broken →
Ore grinding → tri- stages of magnetic separation → dehydration groove → filtering → initial survey → sample is mixed → uniformity testing → definite value analysis → data processing
→ packaging → sells, and its main process is as follows：
1st, Design of Chemical Composition (wt%)
Table 1
2nd, preparation method
Conventional iron ore concentrate preparation method is used according to the chemical composition, by the iron ore concentrate of acquisition through electrically heated drying cabinet 105
DEG C dry 8h, after being ground with sampling machine, sieving, choose mesh (0.088mm) sample of granularity >=180, carry out it is artificial repeatedly mix, make
About 100 ㎏, pack every bottle of 100g.
3rd, particle segregation is examined
To investigate iron ore concentrate sample in varigrained degree of segregation, by sample be divided into three sieve sections (180-200 mesh,
200-240 mesh,>240 mesh), respectively to three sieve sections (TFe, SiO2, P, S) analyzed, analyze data is shown in Table 2.
The different grain size analyze data of table 2
| Granularity (mesh) | Wt% | TFe | SiO2 | P | S |
| 180-200 | 31.58 | 66.98 | 6.61 | 0.00992 | 0.0925 |
| 200-240 | 52.64 | 67.01 | 6.53 | 0.0109 | 0.0921 |
| >240 | 15.78 | 66.92 | 6.54 | 0.0112 | 0.0924 |
| Weighted value | 100 | 66.97 | 6.56 | 0.0107 | 0.0923 |
| Recommendation | ----- | 66.95 | 6.57 | 0.011 | 0.092 |
Institute's column data is the average value of four measurements in table.
As can be seen from Table 2, iron ore concentrate is varigrained in three sieve sections is slightly segregated, and sample is mixed repeatedly
It is even, sample is reached uniform.Subsequent uniformity testing data and constituent parts value data, also fully prove that this sample is uniform
's.
Three bottles of samples are randomly selected, metallic iron is detected,Illustrate Gold Samples category iron content compared with
It is low, uniformity, the stability of iron ore concentrate sample will not be had an impact.
(4) uniformity testing
20 bottles of samples are randomly selected, are tested with accurate high and with enough sensitivity analysis method, SiO2、CaO、
MgO、MnO、TiO2, P determined using Xray fluorescence spectrometer, using chemical analysis method measure, S uses infrared suction by TFe, FeO
Receipts method determines, Al2O3Determined using ICP method.
(5) stability test
Iron ore concentrate sample is determined three times respectively, according to GB/T15000.3 requirement, if condition meets：
|xCRM-xmean|≤U, then have good stability, here
In formula, xCRMFor CRM characteristic magnitude, uCRMFor CRM standard uncertainty, xmeanFor the characteristic quantity of observed value
Value, umeanFor standard uncertainty.Under 95% fiducial probability, k=2, specific investigate the results are shown in Table 3.
The iron ore concentrate sample stability investigation table of table 3
The difference of detected value and recommendation is respectively less than or the expanded uncertainty equal to standard value, it is believed that stability is good
It is good.
Claims (5)
1. a kind of design method of iron ore concentrate, it is characterised in that the design method includes Design of Chemical Composition, preparation method, grain
Degree segregation inspection, uniformity testing and stability test, it is specific as follows：
(1) Design of Chemical Composition
By weight percentage, TFe：65.0-70.0；FeO：25.0-30.0；SiO2：3.0-7.0；Al2O3：0.05-0.2；
CaO：0.1-0.5；MgO：0.1-0.5；MnO：0.03-0.08；TiO2：0.01-0.05；P：0.005-0.02；S：0.01-0.2；
(2) preparation method
The iron ore concentrate for obtaining the chemical composition is taken, through 100-120 DEG C of baking 6-10h of electrically heated drying cabinet, after being ground with sampling machine, mistake
Sieve, the mesh sample of granularity >=180 is chosen, is manually mixed；
(3) particle segregation is examined
Sample is divided into three sieve sections：180-200 mesh, 200-240 mesh,>240 mesh, respectively to TFe, SiO of three sieve sections2、P、S
Analyzed；
(4) uniformity testing
Randomly select 20 groups of samples, SiO2、CaO、MgO、MnO、TiO2, P using Xray fluorescence spectrometer determine, TFe, FeO are adopted
Determined with chemical analysis method, S uses infrared absorption determining, Al2O3Determined using ICP method；
(5) stability test
Iron ore concentrate sample is determined three times respectively, according to GB/T15000.3 requirement, if condition meets：
|xCRM-xmean|≤U, then have good stability, here
In formula, xCRMFor CRM characteristic magnitude, uCRMFor CRM standard uncertainty, xmeanFor the characteristic magnitude of observed value, umean
For standard uncertainty.
2. according to the design method of the iron ore concentrate described in claim 1, it is characterised in that in step (3), when iron ore concentrate is at three
It is varigrained when having segregation in sieve section, sample is mixed repeatedly, sample is reached uniform；Subsequent uniformity testing number
According to and constituent parts value data, until fully prove that sample is uniform.
3. according to the design method of the iron ore concentrate described in claim 1, it is characterised in that in step (3), randomly select three groups of samples
Product, metallic iron is detected, determine metallic iron to iron ore concentrate sample homogeneity, the influence of stability.
4. according to the design method of the iron ore concentrate described in claim 1, it is characterised in that in step (5), the confidence 95% is general
Under rate, k=2, stability is investigated.
5. according to the design method of the iron ore concentrate described in claim 1, it is characterised in that in step (5), detected value and recommendation
Difference be respectively less than or the expanded uncertainty equal to standard value, it is believed that have good stability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610373668.XA CN107460305A (en) | 2016-05-31 | 2016-05-31 | A kind of design method of iron ore concentrate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610373668.XA CN107460305A (en) | 2016-05-31 | 2016-05-31 | A kind of design method of iron ore concentrate |
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Family
ID=60545156
Family Applications (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110887714A (en) * | 2019-12-26 | 2020-03-17 | 金堆城钼业股份有限公司 | Preparation method of industrial molybdenum oxide chemical standard sample |
| CN111270069A (en) * | 2019-09-19 | 2020-06-12 | 廊坊市中铁物探勘察有限公司 | Molybdenum concentrate production process |
| CN111289320A (en) * | 2020-02-17 | 2020-06-16 | 本钢板材股份有限公司 | Iron ore concentrate standard sample and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111270069A (en) * | 2019-09-19 | 2020-06-12 | 廊坊市中铁物探勘察有限公司 | Molybdenum concentrate production process |
| CN110887714A (en) * | 2019-12-26 | 2020-03-17 | 金堆城钼业股份有限公司 | Preparation method of industrial molybdenum oxide chemical standard sample |
| CN111289320A (en) * | 2020-02-17 | 2020-06-16 | 本钢板材股份有限公司 | Iron ore concentrate standard sample and preparation method thereof |
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Application publication date: 20171212 |