CN107398344A - Miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading - Google Patents
Miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading Download PDFInfo
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
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Abstract
The invention discloses a kind of high-sulfur Complex iron ore upgrading to drop miscellaneous ore-dressing technique, belongs to blast furnace reformation technical field of construction.Miscellaneous ore-dressing technique drops in the high-sulfur Complex iron ore upgrading of the present invention, and after complex ore is crushed, product is through primary grinding；Then low intensity magnetic separation is carried out to ore pulp, obtains inferior fine magnetite concentrate and mine tailing；Secondary grinding is carried out to inferior fine magnetite concentrate；Elutriation magnetic separator elutriation is carried out after stage low intensity magnetic separation is carried out to ore pulp, obtains iron ore concentrate and mine tailing；Flotation will be carried out after Tailing thickening again, obtains iron concentrate and mine tailing.Instant invention overcomes the industry prejudice of " first floating-rear magnetic " technique in existing ore dressing, in high-sulfur Complex iron ore desulfurization using " gravity treatment again is floated after first magnetic " technique, a variety of valuable minerals are reclaimed, the purpose realize and put forward smart sulfur reduction, saved energy consumption, are increased economic efficiency.Solve, floating agent dosage big to equipment corrosion during high-sulfur Complex iron ore desulfurization it is big, to the technical problem of sulphur non-recovery.
Description
Technical field
The present invention relates to technical field of beneficiation, more particularly to a kind of high-sulfur Complex iron ore upgrading to drop miscellaneous ore-dressing technique.
Background technology
It is energy-saving, exactly save the energy, reduce consumption, gone to obtain maximum economic benefit with minimum input.Energy-conservation
Consumption reduction has turned into the fundamental state policy in China, and China using the Scientific Outlook on Development as guidance, accelerates development modern energy industry, adhered to
The fundamental state policy to economize on resources with environmental protection, industrialization, modernization are placed on building a resource-conserving and environment-friendly society
The extrusion position of development strategy, make great efforts enhancing the capability of sustainable development, build innovation-oriented country, continue as development of world economy and
Prosperity makes bigger contribution.China has had been enter into energy-efficient society at present, and energy cost is more and more high, and mining industry is China
The larger industry of energy resource consumption, this requires bargh according to itself different condition and Ore performance, to start with from slight part, look for
Go out energy-saving key point, on the premise of beneficiating technology index is ensured, comprehensive study simultaneously uses corresponding power-saving technology, set
Standby and technique, cost efficiency.
As China's Economic Development Mode continues depth adjustment, into structure transformation period, Steel demand continues to decline,
From the point of view of statistics, the national t of iron ore yield 13.81 hundred million in 2015, decline 7.7% in than 2014, and iron ore in the world
The firm volume increase of giant, the situation of global iron ore deposit supply surplus are further exacerbated by, plus the enlarge-effect of many factors, led
Iron Ore Market price is caused to continue to drop；Into 2016, iron ore price is overall to be in ascent stage compared with last year, but from current
International Iron Ore stone price and external several big mines production cost prediction, though the price of International Iron Ore stone has repeatedly, from long-term
From the point of view of price drops amplitude it is not too large.Present steel, mine industry are overall low, in the situation that environmental protection policy is increasingly severe
Under, ore-dressing technique optimization, implement energy-saving and emission-reduction, Reduction Technology of Iron Concentrate be originally improve mining production operation, to improve mine market competing
Strive the effective means of power.
Sulphur can make steel produce red brittleness, steel is produced fracture, therefore sulfur content one in steel when forging and roll at high temperature
As be no more than 0.05%.This requires that the sulphur in the iron ore concentrate of steel-making can not be too high.
It is directed to the separation of high-sulfur Complex iron ore both at home and abroad at present, iron ore concentrate desulfurization is a crucial problem, is also simultaneously
Limit one of key factor of Iron Concentrate Quality.All the time, to reduce sulfur grade in iron ore concentrate, mining operations person has done largely
Work.
Through retrieval, the existing modified technique for the separation of high-sulfur Complex iron ore has：Chinese Patent Application No.：
201410222983.3 publication date：2014.08.13 patent document discloses a kind of magnetite concentrate upgrading drop general labourer's skill, the hair
The bright method using magnetic separation-reverse flotation handles magnetic iron ore, and using HLO2 as collecting agent, starch is inhibitor, and CaO is activator,
NaOH is regulator, can obtain qualified iron ore concentrate.Problem be present：It is only applicable to, impurity relatively low (sulfur grade 0.1%) containing sulfur grade
More ore, at 25~40 DEG C, cold districts energy consumption is larger for slurry temperature requirement.
Chinese Patent Application No.：200710036078.9 publication date：2008.04.09 patent document disclose a kind of height
The method of troilite powder desulfurization.The method that the invention uses asynchronous ore dressing, isolates easily select magnetic iron ore and magnetic iron ore first, then
Isolate refractory magnetite and magnetic iron ore.The method being combined using flotation with magnetic separation, first using sulfuric acid as regulator, butyl
Xanthate is collecting agent, and 2# oil is foaming agent, and flotation obtains iron concentrate 1, then by obtaining iron ore concentrate 1 to mine tailing magnetic separation；In magnetic separation
Using humic acid as dispersant in mine tailing, butyl xanthate is collecting agent, and 2# oil is foaming agent, and flotation obtains iron concentrate 2, then by right
Flotation tailing carries out magnetic separation and obtains iron ore concentrate 2.Problem be present in the technique：Technological process is complex, be applicable sulfur grade 15% with
Upper ore, there is sulfuric acid in medicament, it is larger to equipment corrosion.
Paper《Certain magnetic iron ore puies forward iron sulfur reduction ore-dressing technique》(Modern Mineral, 2013, (4):Described in 23-27) for original
Essential mineral is magnetic iron ore in ore deposit, and secondary mineral are bloodstone, magnetic iron ore, pyrite, Iron grade 33.02%, sulfur grade
0.62% ore, using stage grinding-staged magnetic separation-floatation desulphurization technique, make final iron concentrate grade 66.08%, iron essence
Ore deposit contains sulfur grade 0.28%.But the technique is not directed to the recovery to sulphur.
The content of the invention
1. invention technical problems to be solved
For present in prior art during the desulfurization of high-sulfur Complex iron ore, floating agent dosage big to equipment corrosion it is big,
The problem of to sulphur non-recovery, the invention provides a kind of high-sulfur Complex iron ore upgrading to drop miscellaneous ore-dressing technique.It overcomes ore dressing
In " first float-rear magnetic " technique industry prejudice, in high-sulfur Complex iron ore desulfurization using " gravity treatment again is floated after first magnetic " technique,
A variety of valuable minerals are reclaimed, the purpose realize and put forward smart sulfur reduction, saved energy consumption, are increased economic efficiency.
2. technical scheme
To reach above-mentioned purpose, technical scheme provided by the invention is：
Miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading, and step is：
Step 1: after complex ore is broken, product is through primary grinding, in ore pulp state；
Step 2: carrying out low intensity magnetic separation to ore pulp, inferior fine magnetite concentrate and mine tailing are obtained, carries out the primary election of the first step；
Step 3: carrying out secondary grinding to inferior fine magnetite concentrate, fineness further reduces；
Step 4: carrying out stage low intensity magnetic separation to ore pulp, stage inferior fine magnetite concentrate and mine tailing are obtained；
Step 5: carrying out elutriation magnetic separator elutriation to the weak inferior fine magnetite concentrate of section, iron ore concentrate and mine tailing are obtained, sulfur content in iron ore concentrate
By being reduced to less than 0.2%；
Step 6: by Step 2: carry out flotation after Tailing thickening in four and five, iron concentrate and mine tailing are obtained.
Further technical scheme, increase following steps, secondary recovery is carried out to iron：
Step 6: carrying out high intensity magnetic separation to mine tailing, high intensity magnetic mineral is obtained；
Step 7: being sorted to high intensity magnetic mineral, hematite concentrate and mine tailing are obtained.
Further technical scheme, stage low intensity magnetic separation number is 2~3 times in step 4, improves concentrate purity.
Further technical scheme, flotation mode in step 5 for one it is thick sweep two essences, after one roughing, rougher concentration
Again by selected output concentrate twice, and the mine tailing after roughing will then pass through once purging selection again；Collecting agent is mercapto-carboxylic ester, fourth
Base xanthate or ethyl xanthate, to obtain the higher iron concentrate of purity.
Further technical scheme, collector dosage are 30~450g/t, corresponding according to different all kinds of carry out of medicament
Adjustment.
Further technical scheme, low intensity magnetic separation magnetic field intensity are 119~151kA/m, high intensity magnetic separation magnetic field intensity is 1.0~
1.5T。
Further technical scheme, spiral chute is carried out to high intensity magnetic mineral in step 8 and sorted, it is pure further to improve concentrate
Degree.
Further technical scheme, the TFe grades 30%~38% of complex ore, wherein magnetic iron ore occupation rate 55%~
70%, bloodstone occupation rate 18%~25%, the too high then rate of recovery reduces；TS grades 4%~8%.
Further technical scheme, garrulous ore granularity control is in below 2mm after crushing in step 1；Ore grinding is thin after primary grinding
Degree control accounts for 50%~60% in 200 mesh sieves excessively；The mog control of secondary grinding accounts for 75% in 200 mesh sieves excessively in step 3
~85%.
Further technical scheme, increase following steps：
Step 8: after mine tailing is not less than into 85% into the solid concentration that linear vibrating screen is dehydrated to oversize, by glue
Band machine is transported to stockyard as building material product, is reduced the discharge of solid waste, is sieved lower ore pulp and enter mine tailing as true tailings
Storehouse.And conventional mill selects mine tailing because granularity is thinner, the Tailings Dam stockpiling that need to generally discharge, this not only landed property, there is also
The potential safety hazard of Tailings Dam.
3. beneficial effect
Using technical scheme provided by the invention, compared with prior art, have the advantages that：
(1) miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading of the invention, improves iron concentrate grade, reduces iron
Sulfur content in concentrate, solve the problem that sulfur content is too high in existing process iron ore concentrate, reach upgrading and drop miscellaneous effect；
(2) miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading of the invention, and the final product that obtains has iron ore concentrate (magnetic
Iron ore, bloodstone) and iron concentrate, a variety of valuable minerals in ore are fully reclaimed, reduce the waste of resource；
(3) miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading of the invention, reduces into flotation device ore deposit amount, may be used also
A number of pump number of units is cut, saves reagent consumption, energy consumption, mitigates the abrasion of floatation equipment, reaches the effect of cost efficiency；
(4) miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading of the invention, suitable for the TFe grades of complex ore
30%~38%, wherein magnetic iron ore occupation rate 55%~70%, bloodstone occupation rate 18%~25%；TS grades 4%~8%；
Although defining the grade of ore, the iron ore for meeting the grade requirement need not be tested again, it is with strong points, avoid repeating labor
It is dynamic；
(5) miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading of the invention, for the iron ore of specific grade, gram
Industry prejudice has been taken, from the ore-dressing technique of " gravity treatment again is floated after first magnetic ", has served unexpected technique effect；
(6) miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading of the invention, and two stages of magnetic separation concentrate use wash mill
(column magnetic separator) sorts, can be by sulfur content in concentrate by being reduced to less than 0.2%.
Brief description of the drawings
Fig. 1 is the technological process framework sketch of the present invention；
The conventional mineral processing circuit figure of this prior art of Fig. 2；
Fig. 3 is the flow sheet of pyrite concentration figure of embodiment 3；
Fig. 4 is the flow sheet of pyrite concentration figure of embodiment 4；
Fig. 5 is that two stages of magnetic separation of embodiment 5 give ore deposit ore grinding curve；
Fig. 6 contrasts for the grade of sulphur in magnetic concentrate under the different fineness of embodiment 5；
Fig. 7 is the Grade change trend of iron and sulphur in the different fineness magnetic concentrate of embodiment 6；
Fig. 8 is the mineral processing circuit figure of embodiment 8.
Embodiment
To further appreciate that present disclosure, with reference to accompanying drawing, the present invention is described in detail.
By taking 5,000,000 t/a ore dressing plants as an example, sample ore is derived from the factory, and the ore is mainly magnetic iron ore, bloodstone, pyrite,
Raw ore chemistry multielement analysis, Fe clusters, sulphur thing phase result are shown in Table 1, table 2 and table 3 respectively.
The raw ore analysis of chemical elements result of table 1
| Element | TFe | mFe | TS | Ss | P | CaO |
| Content (%) | 34.52 | 20.36 | 6.024 | 3.189 | 0.55 | 8.74 |
| Element | Al2O3 | K2O | Na2O | MgO | SiO2 | / |
| Content (%) | 4.02 | 0.76 | 0.76 | 2.24 | 16.20 | / |
The Fe clusters analysis result of table 2
| It is separate | Magnetic iron ore | Pyrite | Bloodstone | Siderite | Ferrosilite | Quan Tie |
| Content (%) | 22.08 | 3.42 | 7.06 | 1.12 | 0.84 | 34.52 |
| Distributive law (%) | 63.96 | 9.91 | 20.45 | 3.25 | 2.43 | 100.00 |
The sulphur material phase analysis result of table 3
| It is separate | Elemental sulfur | The sulphur of sulfide | The sulphur of sulfate | Full sulphur |
| Content (%) | 0.01 | 3.684 | 2.33 | 6.024 |
| Distributive law (%) | 0.17 | 61.15 | 38.68 | 100.00 |
Embodiment 1
To above ore using the PROCESS FOR TREATMENT of traditional as shown in Figure 2 " first float-rear magnetic " Complex iron ore, i.e.,
After carrying out primary grinding through laboratory XMQ-67 240 × 90mm of type conical ball mills, particle diameter -0.074mm accounts for 55% (i.e. 200
55%) mesh sieve screenings accounts for, mine-supplying quantity 200g, has done the condition test of different collector dosages, and result of the test is shown in Table 4：
Table 4 " first floating-rear magnetic " technique collector dosage condition test result (%)
It can be seen from upper table, with the increase of collector dosage, full sulfur grade is slightly decreased, and the rate of recovery increases.
When AT708 dosages bring up to 350g/t by 300g/t, TS grades are down to 39.06% by 39.18%, and the rate of recovery is by 47.95%
48.30% is risen to, ascensional range is smaller.Therefore using AT708 dosages 300g/t as optimum condition.
Embodiment 2
" first magnetic-rear floating " technique as shown in Figure 1 of the present invention is used to above ore, that is, uses and passes through staged magnetic separation
Mine tailing (secondary grinding -0.074mm contents account for 80%, the mine tailing after two stages of magnetic separation) afterwards is used as flotation sample, TFe contents
21.29%, the TFe rate of recovery 44.55%, TS contents 8.268%, the TS rate of recovery 99.16%.Carry out the condition of different collecting agents
Experiment, result of the test are shown in Table 5：
Table 5 " first magnetic-rear floating " technique collector dosage condition test result (%)
As can be seen from the above table, with the increase of AT708 dosages, the TS grade ranges of decrease are larger, and the rising of the TS rate of recovery is relatively slow.
When AT708 dosages rise to 300g/t by 250g/t, TS grades drop to 36.64% by 37.95%, the rate of recovery by
49.43% rises to 52.68%, and when AT708 dosages are 400g/t, grade drops to 34.62%.Therefore from the angle upgrade
Degree considers, chooses AT708 dosages 250g/t as optimum condition.AT708 is a kind of mercaptan carboxylic acid's esters collecting agent, compared to fourth
It is a kind of liquid preparation for base xanthate and ethyl xanthate (being solid chemicals), its carboxyl is C2~C3 group, its ester group
Environment-friendly for C2~C8 group, synthesis technique is simple, smell is small, stable performance, can with " first magnetic-rear floating " technique
Synergy, flotation again after sulfenyl miberal powder is selected in first magnetic separation is stronger with the affinity of mercapto-carboxylic ester, improves its collecting energy
Power and selection performance.
Embodiment 3
To above ore, using the PROCESS FOR TREATMENT of traditional " first float-rear magnetic ", the Complex iron ore carries out selecting sulphuring treatment, such as
Shown in Fig. 3, step is：
Step 1: after complex ore is broken, muck product mill feed size is controlled in below 2mm, then through primary grinding, mill
Ore deposit fineness is controlled by cyclone classification and accounts for 55% in -200 mesh；
Step 2: ore pulp is flow to the stirring of flotation stirring pool, roughing collecting agent AT708 dosage 250g/t, foaming agent 2# oil
(ROH) 30g/t, iron concentrate, after testing, iron concentrate TS grades 39.18% and mine tailing are obtained；To mine tailing carry out secondary flotation and
Once purging selection, obtain the sulphur chats and true tailings (TS grades 2.99%) of TS grades 28.45%.
Embodiment 4
To above ore, using " first magnetic-rear floating " PROCESS FOR TREATMENT of the present invention, the Complex iron ore carries out selecting sulphuring treatment, walks
Suddenly it is：As shown in figure 4,
Step 1: after complex ore is broken, muck product mill feed size is controlled in below 2mm, then through primary grinding, mill
Ore deposit fineness is controlled by cyclone classification and accounts for 55% in -200 mesh；
Step 2: carrying out one section of low intensity magnetic separation to ore pulp, inferior fine magnetite concentrate and mine tailing are obtained；
Step 3: secondary grinding is carried out to inferior fine magnetite concentrate；
Step 4: after testing, iron ore concentrate and mine tailing are obtained through 2 sections of low intensity magnetic separations to ore pulp after classification；
Step 5: collecting to above-mentioned each magnetic tailing, after squeezing into concentrator concentration with pump, it flow to flotation stirring pool and stirs
Mix, flotation is carried out using " one thick sweep two essence ", roughing collecting agent AT708 dosage 250g/t, foaming agent 2# oil (ROH) 30g/t,
Obtain iron concentrate, after testing, iron concentrate TS grades 37.96%.
Comparative example 3 and 4, under two kinds of different technology conditions, its dosing see the table below 6：
Dosing contrasts under the different technology conditions of table 6
As can be seen from Table 7, at both after flotation, TS grades close (39.18%, 37.96%), rate of recovery phase are obtained
Closely in the case of (47.85%, 49.07%) product, " being floated after first magnetic " technique selects sulfur test (250g/t staged magnetic separation mine tailings, phase
When in 175.325g/t raw ores), select collector dosage needed for sulfur test (300g/t raw ores) to reduce about compared with " magnetic after first floating " technique
40%.
Embodiment 5
It is determined that after the technique of " being floated after first magnetic ", the present embodiment confirms the pass of the sulfur content and mog in final concentrate
System, after two stages of magnetic separation in the step of embodiment 4 three have been carried out into ore grinding to ore deposit, carry out (the weak magnetic roughing+weak magnetic essence of magnetic separation twice
Choosing).The relation curve of ore grinding time and mog is shown in Fig. 5, and the magnetic separation index under different mogs is shown in Table 7, different ore grindings
The relation curve of sulfur content and mog under fineness in final concentrate is shown in Fig. 6.
Ore mill is the conical ball mill of XMQ-240 × 90, and revolution is 96 revs/min, and pulp density is solid during ore grinding:Liquid=4:
3 (weight ratios)；
Magnetic separator isDrum type wet type weak magnetic magnetic separator, magnetic separation magnetic field intensity are fixed as 1700Oe；
The stages of magnetic separation of table 7 two gives ore deposit magnetic separation mog condition test
Understand as shown in Figure 5, after 6 minutes ore grinding time, curve is more gentle, and granularity change is little, prolongs without excessive
The long ore grinding time.Shown in table 7 and Fig. 6, mog has a great influence to concentrate product quality, and mog is higher, magnetic
The liberation degree of minerals of iron ore and pyrite is higher, and the grade of iron ore concentrate is higher after secondary magnetic separation, and sulfur content is lower in concentrate.
Under the conditions of different mogs according to scene magnetic field intensity carried out magnetic separation experiment, when mog higher than-
0.074mm75%, after magnetic separation twice, iron concentrate grade reaches more than 68%, and sulfur content is reduced to less than 0.2%, meets
The agglomerating smelting requirements of Iron concentrate, and mog fineness when -0.074mm is less than 85% has a great influence to sulfur content, ore grinding
Fineness desulfurized effect change after -0.074mm is more than 85% is relatively slow, shows mog monomer when -0.074mm accounts for 85%
Dissociation is more complete, and sorting result is preferable, therefore secondary grinding can improve fineness accounts for 85% and carry out magnetic separation again to -0.074mm.
Embodiment 6
After two stages of magnetic separation in the step of embodiment 4 three have been carried out into ore grinding to ore deposit, progress magnetic separation twice (weak magnetic roughing+
Weak magnetic is selected), after carry out elutriation magnetic separation again, the effect of magnetic separation is eluriated in checking：To two stages of magnetic separation to ore deposit under different mogs
Carrying out continuous magnetic separation twice and eluriated magnetic separation, magnetic field intensity is respectively 151.27kA/m, 119.43kA/m and 103.34kA/m,
Result of the test is as shown in Fig. 7 and table 8
The stages of magnetic separation of table 8 two is tested to the magnetic separation of ore deposit difference mog
From table 9 and Fig. 7, as Iron grade gradually rises in the increase concentrate of mog, sulfur grade gradually reduces,
And less than 0.2% is all reduced to, therefore scene can put forward iron sulfur reduction by adjusting mog and magnetic field intensity.Moreover, additional wash in a pan
After washing magnetic separation, compared to 0.199,0.168,0.157 of identical fineness in embodiment 5, sulfur grade further reduces, and is respectively：
0.157th, 0.112,0.094, further increase the grade of iron ore concentrate.
Embodiment 7
It is determined that after the technique of " being floated after first magnetic ", it is determined that the technological parameter eluriated, grinds in the case where feed ore concentration is 30%
Studied carefully different controls, sort magnetic field intensity under the conditions of different ascending waters amount to eluriate result influence.The result of the test such as institute of table 9
Show.
The stages of magnetic separation concentrate elutriation test result of table 9 two
As can be seen from Table 9, the elutriation to two stages of magnetic separation concentrate can effectively put forward iron sulfur reduction, drop the content of sulphur in concentrate
It is low to less than the 0.3% of industrial requirements, and it is different sort condition the content of sulphur in concentrate is influenceed it is more apparent, if therefore scene increase
Add the magnetic field intensity and upward-current eluriated and scene is controlled and stablized when flow put forward iron sulfur reduction.
Embodiment 8
It is determined that after the technique of " being floated after first magnetic ", to above ore, using " first magnetic-rear floating " PROCESS FOR TREATMENT of the invention, this is multiple
Iron ore is closed, is concretely comprised the following steps, as shown in Figure 8：
Step 1: after complex ore is broken, muck product mill feed size is controlled in below 2mm, then through primary grinding, mill
Ore deposit fineness is controlled by cyclone classification and accounts for 55% in -200 mesh；
Step 2: carrying out one section of low intensity magnetic separation to ore pulp, magnetic field intensity 151.2kA/m, inferior fine magnetite concentrate and mine tailing are obtained；
Step 3: carrying out secondary grinding to inferior fine magnetite concentrate, secondary grinding product granularity is controlled by cyclone pre-classification
80% is accounted in -200 mesh；
Step 4: to ore pulp after classification through 2 sections of low intensity magnetic separations (magnetic field intensity is respectively 135.28kA/m, 119.37kA/m),
After testing, stage inferior fine magnetite concentrate TFe grade 67.73%, grade containing TS 0.284% and mine tailing are obtained；
Step 5: carrying out elutriation magnetic separator elutriation to stage inferior fine magnetite concentrate, wash mill magnetic separation magnetic field intensity is 103.34kA/
M, upward-current 500L/h, obtain iron ore concentrate TFe grades 69.02%, grade containing TS 0.182% and mine tailing；
Step 6: collecting to above-mentioned each magnetic tailing, after squeezing into concentrator concentration with pump, it flow to flotation stirring pool and stirs
Mix, flotation is carried out using " one thick sweep two essence ", roughing collecting agent AT708 dosage 250g/t, foaming agent 2# oil (ROH) 30g/t,
Obtain iron concentrate, after testing, TS grades 45.129% and mine tailing；
Step 7: carrying out high intensity magnetic separation (magnetic field intensity 1.2T) to mine tailing, high intensity magnetic mineral is obtained；
Sorted Step 8: carrying out spiral chute to high intensity magnetic mineral, obtain hematite concentrate, after testing, TFe grades 54.20%
And mine tailing.
" first magnetic-rear floating " technique of the present embodiment, because the ore deposit amount for entering flotation cell is reduced so that flotation device number of units subtracts
Few, flotation device installed power reduces, therefore reduces energy consumption.The reduction of ore flotation amount is additionally, since, a number of pump can be cut
Number of units.Through rough calculation, flotation device selects such as table 10 below under different technology conditions：
Energy consumption economic indicator under the different technology conditions of table 10
Embodiment 9
Miscellaneous ore-dressing technique drops in the high-sulfur Complex iron ore upgrading of the present embodiment, basic step with embodiment 8, complex ore
TFe grades 30% or so, wherein magnetic iron ore occupation rate 55% or so, bloodstone occupation rate 18% or so；TS grades 4% or so,
Concretely comprise the following steps：
Step 1: after complex ore is broken, muck product mill feed size is controlled in below 2mm, then through primary grinding, mill
Ore deposit fineness is controlled by cyclone classification and accounts for 50% in -200 mesh；
Step 2: carrying out one section of low intensity magnetic separation to ore pulp, magnetic field intensity 151.2kA/m, inferior fine magnetite concentrate and mine tailing are obtained；
Step 3: carrying out secondary grinding to inferior fine magnetite concentrate, secondary grinding product granularity is controlled by cyclone pre-classification
75% is accounted in -200 mesh；
Step 4: to ore pulp after classification through 3 sections of low intensity magnetic separations (magnetic field intensity be respectively 135.28kA/m, 119.37kA/m,
127.41kA/m), iron ore concentrate TFe grades 64.53%, grade containing TS 0.262% and mine tailing are obtained；
Step 5: carrying out elutriation magnetic separator elutriation to stage inferior fine magnetite concentrate, wash mill magnetic separation magnetic field intensity is 103.34kA/
M, upward-current 500L/h, obtain iron ore concentrate TFe grades 66.02%, grade containing TS 0.152% and mine tailing；
Step 6: collecting to above-mentioned each magnetic tailing, after squeezing into concentrator concentration with pump, it flow to flotation stirring pool and stirs
Mix, flotation, roughing collecting agent butyl xanthate dosage 30g/t, foaming agent 2# oil (ROH) 40g/ are carried out using " one slightly sweeps two essences "
T, obtain iron concentrate, after testing, TS grades 47.170% and mine tailing；
Step 7: carrying out high intensity magnetic separation (magnetic field intensity 1.2T) to mine tailing, high intensity magnetic mineral is obtained；
Sorted Step 8: carrying out spiral chute to high intensity magnetic mineral, obtain hematite concentrate, after testing, TFe grades 56.76%
And mine tailing；
Step 9: after mine tailing is not less than into 85% into the solid concentration that linear vibrating screen is dehydrated to oversize, by glue
Band machine is transported to stockyard as building material product, is sieved lower ore pulp and is entered Tailings Dam as true tailings.
Embodiment 10
Miscellaneous ore-dressing technique drops in the high-sulfur Complex iron ore upgrading of the present embodiment, basic step with embodiment 6, complex ore
TFe grades 38% or so, wherein magnetic iron ore occupation rate 70% or so, bloodstone occupation rate 25% or so；TS grades 8% or so,
Concretely comprise the following steps：
Step 1: after complex ore is broken, muck product mill feed size is controlled in below 2mm, then through primary grinding, mill
Ore deposit fineness is controlled by cyclone classification and accounts for 70% in -200 mesh；
Step 2: carrying out one section of low intensity magnetic separation to ore pulp, magnetic field intensity 151.2kA/m, inferior fine magnetite concentrate and mine tailing are obtained；
Step 3: carrying out secondary grinding to inferior fine magnetite concentrate, secondary grinding product granularity is controlled by cyclone pre-classification
85% is accounted in -200 mesh；
Step 4: to ore pulp after classification through 3 sections of low intensity magnetic separations (magnetic field intensity be respectively 135.28kA/m, 119.37kA/m,
127.41kA/m), iron ore concentrate TFe grades 69.59%, grade containing TS 0.291% and mine tailing are obtained；
Step 5: carrying out elutriation magnetic separator elutriation to stage inferior fine magnetite concentrate, wash mill magnetic separation magnetic field intensity is 103.34kA/
M, upward-current 500L/h, obtain iron ore concentrate TFe grades 71.33%, grade containing TS 0.164% and mine tailing；
Step 6: collecting to above-mentioned each magnetic tailing, after squeezing into concentrator concentration with pump, it flow to flotation stirring pool and stirs
Mix, flotation, roughing collecting agent ethyl xanthate dosage 450g/t, foaming agent 2# oil (ROH) are carried out using " one slightly sweeps two essences "
40g/t, obtain iron concentrate, after testing, TS grades 49.190% and mine tailing；
Step 7: carrying out high intensity magnetic separation (magnetic field intensity 1.5T) to mine tailing, high intensity magnetic mineral is obtained；
Sorted Step 8: carrying out spiral chute to high intensity magnetic mineral, obtain hematite concentrate, after testing, TFe grades 58.98%
And mine tailing；
Step 9: after mine tailing is not less than into 85% into the solid concentration that linear vibrating screen is dehydrated to oversize, by glue
Band machine is transported to stockyard as building material product, is sieved lower ore pulp and is entered Tailings Dam as true tailings.
Embodiment 11
Miscellaneous ore-dressing technique drops in the high-sulfur Complex iron ore upgrading of the present embodiment, basic step with embodiment 6, complex ore
TFe grades 38% or so, wherein magnetic iron ore occupation rate 70% or so, bloodstone occupation rate 21% or so；TS grades 6% or so,
Concretely comprise the following steps：
Step 1: after complex ore is broken, muck product mill feed size is controlled in below 2mm, then through primary grinding, mill
Ore deposit fineness is controlled by cyclone classification and accounts for 60% in -200 mesh；
Step 2: carrying out one section of low intensity magnetic separation to ore pulp, magnetic field intensity 151.2kA/m, inferior fine magnetite concentrate and mine tailing are obtained；
Step 3: carrying out secondary grinding to inferior fine magnetite concentrate, secondary grinding product granularity is controlled by cyclone pre-classification
85% is accounted in -200 mesh；
Step 4: to ore pulp after classification through 2 sections of low intensity magnetic separations (magnetic field intensity be respectively 135.28kA/m, 119.37kA/m),
Obtain iron ore concentrate TFe grades 66.73%, grade containing TS 0.251% and mine tailing；
Step 5: carrying out elutriation magnetic separator elutriation to stage inferior fine magnetite concentrate, wash mill magnetic separation magnetic field intensity is 103.34kA/
M, upward-current 500L/h, obtain iron ore concentrate TFe grades 67.78%, grade containing TS 0.132% and mine tailing；
Step 6: collecting to above-mentioned each magnetic tailing, after squeezing into concentrator concentration with pump, it flow to flotation stirring pool and stirs
Mix, flotation, roughing collector dosage 250g/t, by AT708 are carried out using " one slightly sweeps two essences "：Butyl xanthate：Ethyl xanthate
=3：1：(butyl xanthate and ethyl xanthate can be dissolved in AT708, compared to solid powder, stirred after dissolving for 1 proportioning preparation
Shi Gengjia is uniform, moreover, three can also play certain synergistic action effect), foaming agent 2# oil (ROH) 30g/t, obtain sulphur essence
Ore deposit, after testing, TS grades 47.350% and mine tailing；
Step 7: carrying out high intensity magnetic separation (magnetic field intensity 1.0T) to mine tailing, high intensity magnetic mineral is obtained；
Sorted Step 8: carrying out spiral chute to high intensity magnetic mineral, obtain hematite concentrate, after testing, TFe grades 59.76%
And mine tailing；
Step 9: after mine tailing is not less than into 85% into the solid concentration that linear vibrating screen is dehydrated to oversize, by glue
Band machine is transported to stockyard as building material product, is sieved lower ore pulp and is entered Tailings Dam as true tailings.
Embodiment 12
Miscellaneous ore-dressing technique drops in the high-sulfur Complex iron ore upgrading of the present embodiment, basic step with embodiment 6, complex ore
TFe grades 36% or so, wherein magnetic iron ore occupation rate 60% or so, bloodstone occupation rate 24% or so；TS grades 7% or so,
Concretely comprise the following steps：
Step 1: after complex ore is broken, muck product mill feed size is controlled in below 2mm, then through primary grinding, mill
Ore deposit fineness is controlled by cyclone classification and accounts for 60% in -200 mesh；
Step 2: carrying out one section of low intensity magnetic separation to ore pulp, magnetic field intensity 151.2kA/m, inferior fine magnetite concentrate and mine tailing are obtained；
Step 3: carrying out secondary grinding to inferior fine magnetite concentrate, secondary grinding product granularity is controlled by cyclone pre-classification
85% is accounted in -200 mesh；
Step 4: to ore pulp after classification through 2 sections of low intensity magnetic separations (magnetic field intensity be respectively 135.28kA/m, 119.37kA/m),
Obtain iron ore concentrate TFe grades 66.73%, grade containing TS 0.251% and mine tailing；
Step 5: carrying out elutriation magnetic separator elutriation to stage inferior fine magnetite concentrate, wash mill magnetic separation magnetic field intensity is 103.34kA/
M, upward-current 500L/h, obtain iron ore concentrate TFe grades 68.08%, grade containing TS 0.116% and mine tailing；
Step 6: collecting to above-mentioned each magnetic tailing, after squeezing into concentrator concentration with pump, it flow to flotation stirring pool and stirs
Mix, flotation, roughing collector dosage 250g/t, by AT708 are carried out using " one slightly sweeps two essences "：Butyl xanthate：Ethyl xanthate
=4：2：1 proportioning is prepared, foaming agent 2# oil (ROH) 30g/t, obtains iron concentrate, after testing, TS grades 45.540% and tail
Ore deposit；
Step 7: carrying out high intensity magnetic separation (magnetic field intensity 1.1T) to mine tailing, high intensity magnetic mineral is obtained；
Sorted Step 8: carrying out spiral chute to high intensity magnetic mineral, obtain hematite concentrate, after testing, TFe grades 64.44%
And mine tailing；
Step 9: after mine tailing is not less than into 85% into the solid concentration that linear vibrating screen is dehydrated to oversize, by glue
Band machine is transported to stockyard as building material product, is sieved lower ore pulp and is entered Tailings Dam as true tailings.
Schematically the present invention and embodiments thereof are described above, this describes no restricted, institute in accompanying drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited thereto.So if common skill of this area
Art personnel are enlightened by it, without departing from the spirit of the invention, without designing and the technical scheme for creativeness
Similar frame mode and embodiment, protection scope of the present invention all should be belonged to.
Claims (10)
1. miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading, it is characterised in that step is：
Step 1: after complex ore is broken, product is through primary grinding；
Step 2: carrying out low intensity magnetic separation to ore pulp, inferior fine magnetite concentrate and mine tailing are obtained；
Step 3: secondary grinding is carried out to inferior fine magnetite concentrate；
Step 4: carrying out stage low intensity magnetic separation to ore pulp, stage inferior fine magnetite concentrate and mine tailing are obtained；
Step 5: carrying out elutriation magnetic separator elutriation to stage inferior fine magnetite concentrate, iron ore concentrate and mine tailing are obtained, sulfur content is by dropping in iron ore concentrate
It is low to less than 0.2%；
Step 6: by Step 2: carry out flotation after Tailing thickening in four and five, iron concentrate and mine tailing are obtained.
2. miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading according to claim 1, it is characterised in that increase with
Lower step：
Step 7: carrying out high intensity magnetic separation to mine tailing, high intensity magnetic mineral is obtained；
Step 8: being sorted to high intensity magnetic mineral, hematite concentrate and mine tailing are obtained.
3. miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading according to claim 2, it is characterised in that：Step 4
Middle stage low intensity magnetic separation number is 2~3 times.
4. miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading according to claim 3, it is characterised in that：Step 6
In flotation mode for one it is thick sweep two essences, after one roughing, rougher concentration is again by selected output concentrate twice, and after roughing
Mine tailing then to pass through once purging selection again；Collecting agent is mercapto-carboxylic ester, butyl xanthate or ethyl xanthate.
5. miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading according to claim 4, it is characterised in that：It is described to catch
It is 30~450g/t to receive agent dosage.
6. miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading according to claim 5, it is characterised in that：It is described weak
Magnetic separation magnetic field intensity is 119~151kA/m, and high intensity magnetic separation magnetic field intensity is 1.0~1.5T.
7. miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading according to claim 5, it is characterised in that：Step 8
In to high intensity magnetic mineral carry out spiral chute sort.
8. miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading according to any one of claims 1 to 7, its feature exists
In：The TFe grades 30%~38% of the complex ore, wherein magnetic iron ore occupation rate 55%~70%, bloodstone occupation rate
18%~25%；TS grades 4%~8%.
9. miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading according to claim 8, it is characterised in that：Step 1
In crush after garrulous ore granularity control in below 2mm；Mog control accounts for 50%~60% in 200 mesh sieves excessively after primary grinding；
The mog control of secondary grinding accounts for 75%~85% in 200 mesh sieves excessively in step 3.
10. miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading according to claim 9, it is characterised in that increase
Following steps：
Step 9: after mine tailing is not less than into 85% into the solid concentration that linear vibrating screen is dehydrated to oversize, by sealing-tape machine
Transport, as building material product, sieves lower ore pulp and enters Tailings Dam as true tailings to stockyard.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108855584A (en) * | 2018-06-28 | 2018-11-23 | 马钢集团设计研究院有限责任公司 | A kind of difficulty selects the ore-dressing technique of producing high-quality iron ore concentrate by low-grade magnetic iron ore |
| CN108970800A (en) * | 2018-06-28 | 2018-12-11 | 马钢集团设计研究院有限责任公司 | The ore-dressing technique of dioxide-containing silica in a kind of reduction iron ore concentrate |
| CN108993764A (en) * | 2018-06-28 | 2018-12-14 | 马钢集团设计研究院有限责任公司 | Miscellaneous process drops in a kind of chromium depleted zone upgrading |
| CN109158204A (en) * | 2018-07-03 | 2019-01-08 | 昆明理工大学 | A kind of high-sulfur bloodstone selects iron sulphur removal enrichment method |
| CN110174085A (en) * | 2019-04-26 | 2019-08-27 | 长沙迪迈数码科技股份有限公司 | Acquisition methods, device and the storage medium of the elongated stockyard feeding element grade in mine |
| CN110201798A (en) * | 2019-04-19 | 2019-09-06 | 铜陵有色金属集团股份有限公司 | A kind of DC activator and the acidless craft for sorting the sulphur, iron mineral that are inhibited by high-alkali and high calcium |
| CN112058500A (en) * | 2020-07-29 | 2020-12-11 | 中钢集团马鞍山矿山研究总院股份有限公司 | Beneficiation method for comprehensively utilizing magnetite concentrate flotation desulfurization foam products |
| CN114054205A (en) * | 2021-10-09 | 2022-02-18 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Method for recovering pyrite |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4081251A (en) * | 1976-07-06 | 1978-03-28 | The United States Of America As Represented By The Secretary Of The Navy | Process to remove iron sulfide from coal to reduce pollution |
| CN203711120U (en) * | 2014-02-28 | 2014-07-16 | 重钢西昌矿业有限公司 | Mineral separation system for extremely-poor vanadium-titanium magnetite |
| CN103934094A (en) * | 2014-03-26 | 2014-07-23 | 长沙矿冶研究院有限责任公司 | Mineral processing process of low-grade micro-fine particle embedded iron ore hard to choose |
| CN106076606A (en) * | 2016-08-10 | 2016-11-09 | 中钢集团马鞍山矿山研究院有限公司 | A kind of beneficiation method of the red Complex iron ore of magnetic |
-
2017
- 2017-04-28 CN CN201710293195.7A patent/CN107398344B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4081251A (en) * | 1976-07-06 | 1978-03-28 | The United States Of America As Represented By The Secretary Of The Navy | Process to remove iron sulfide from coal to reduce pollution |
| CN203711120U (en) * | 2014-02-28 | 2014-07-16 | 重钢西昌矿业有限公司 | Mineral separation system for extremely-poor vanadium-titanium magnetite |
| CN103934094A (en) * | 2014-03-26 | 2014-07-23 | 长沙矿冶研究院有限责任公司 | Mineral processing process of low-grade micro-fine particle embedded iron ore hard to choose |
| CN106076606A (en) * | 2016-08-10 | 2016-11-09 | 中钢集团马鞍山矿山研究院有限公司 | A kind of beneficiation method of the red Complex iron ore of magnetic |
Non-Patent Citations (3)
| Title |
|---|
| 吕锋: "某铁矿石初步可选性试验研究", 《矿业快报》 * |
| 张宪宝等: "淘洗磁选机在某磁选铁精矿提纯中的应用试验", 《现代矿业》 * |
| 邯邢冶金矿山管理局中心试验室等: "从午汲选矿厂尾矿中回收铁", 《有色金属（冶炼部分）》 * |
Cited By (12)
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| CN108855584A (en) * | 2018-06-28 | 2018-11-23 | 马钢集团设计研究院有限责任公司 | A kind of difficulty selects the ore-dressing technique of producing high-quality iron ore concentrate by low-grade magnetic iron ore |
| CN108970800A (en) * | 2018-06-28 | 2018-12-11 | 马钢集团设计研究院有限责任公司 | The ore-dressing technique of dioxide-containing silica in a kind of reduction iron ore concentrate |
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| CN110201798B (en) * | 2019-04-19 | 2021-11-26 | 铜陵有色金属集团股份有限公司 | DC activator and acid-free process for sorting sulfur and iron minerals inhibited by high alkali and high calcium |
| CN110174085A (en) * | 2019-04-26 | 2019-08-27 | 长沙迪迈数码科技股份有限公司 | Acquisition methods, device and the storage medium of the elongated stockyard feeding element grade in mine |
| CN110174085B (en) * | 2019-04-26 | 2021-06-04 | 长沙迪迈数码科技股份有限公司 | Method and device for obtaining grade of reclaiming element of long mine storage yard and storage medium |
| CN112058500A (en) * | 2020-07-29 | 2020-12-11 | 中钢集团马鞍山矿山研究总院股份有限公司 | Beneficiation method for comprehensively utilizing magnetite concentrate flotation desulfurization foam products |
| CN114054205A (en) * | 2021-10-09 | 2022-02-18 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Method for recovering pyrite |
| CN115041297A (en) * | 2022-06-07 | 2022-09-13 | 安徽庐江龙桥矿业股份有限公司 | Ore dressing method for ore blending |
| CN115041297B (en) * | 2022-06-07 | 2024-05-17 | 安徽庐江龙桥矿业股份有限公司 | Ore dressing method for ore blending |
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