CN107442292A - A kind of upgrading drop silicon of silicate-type hematite-limonite rougher concentration top-ups choosing method - Google Patents
A kind of upgrading drop silicon of silicate-type hematite-limonite rougher concentration top-ups choosing method Download PDFInfo
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- CN107442292A CN107442292A CN201710765325.2A CN201710765325A CN107442292A CN 107442292 A CN107442292 A CN 107442292A CN 201710765325 A CN201710765325 A CN 201710765325A CN 107442292 A CN107442292 A CN 107442292A
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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
- B03D1/018—Mixtures of inorganic and organic compounds
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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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/007—Modifying reagents for adjusting pH or conductivity
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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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
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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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/06—Depressants
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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
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
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Abstract
The invention discloses a kind of upgrading of silicate-type hematite-limonite rougher concentration drop silicon to top-up choosing method, it is put into including adding water to size mixing silicate-type hematite-limonite rougher concentration in roughing floatation equipment, sequentially adds collecting agent and inhibitor, supplementary catching agent, the H of the concentration of PH regulators 5%2SO4Direct flotation is stirred, obtains the roughing step of rougher concentration foam and rougher tailings；Above-mentioned rougher concentration foam is put into selected floatation equipment, adds the concentration step that inhibitor stirring direct flotation obtains selected concentrate and cleaner tailings；Above-mentioned cleaner tailings is put into and scanned in equipment, adds collecting agent and/or and inhibitor, supplementary catching agent, the H of the concentration of PH regulators 5%2SO4Stirring is scanned, and obtains scavenger concentrate and that scans mine tailing scans step.The present invention has the characteristics of stable technical maturity, index, simple to operate, upgrading drop silicon positive effect, yield and the rate of recovery are high.
Description
Technical field
The invention belongs to ferrous metal technical field of beneficiation, and in particular to a kind of technical maturity, index are stable, operation letter
The upgrading drop silicon direct flotation of single, upgrading drop silicon positive effect, yield and the high silicate-type hematite-limonite rougher concentration of the rate of recovery
Method.
Background technology
Dahongshan iron ore is the iron ore mine of the state-of-the-art underground mining scale first in China, accounts for China's iron ore deposit 18%
Dahongshan formula iron ore be Volcanic-type mineral deposit Typical Representative, have hematite-limonite content accounting it is big, silicate and iron silicic acid
The characteristics of salt mineral content is high, microfine content is high, iron content is high in silicone content height, mine tailing in iron ore concentrate.Particularly have only
The features such as physical property of special " 234 "：
" 2 is low " --- Armco magnetic iron ratio is low, secondary concentrate grade is low；
" 3 is close " --- the density of main gangue mineral and iron mineral is close, surface chemical property is close, specific susceptibility connects
Closely；
" 4 is high " --- silicate content is high, microfine content is high, iron content is high in silicone content height, mine tailing in iron ore concentrate.
Hematite-limonite is a kind of iron ore with industrial utility value, and because its mineral disseminated grain size is thin, ore structures are multiple
Miscellaneous, it is larger that it sorts difficulty.Particularly Dahongshan formula hematite-limonite, due to silicate and ferrosilicate mineral content height cut it is fine
Grain content is high, causes that iron concentrate grade is low, silicone content is high, has a strong impact on the pellet sintering machine smelting quality in later stage.
Have at present to the typical ore-dressing technique of hematite-limonite：Single Beneficiation flowsheet（Including ore dressings such as gravity treatment, magnetic separation and flotation
Method）, magnetic-floating combined process flow, reduction roasting-magnetic separation-leaching flow and chloridising roasting flow etc..To fine-grained disseminated grain, weak magnetic
Bloodstone, hematite-limonite and magnet-red iron composite ore, early stage is much more general to use gravity separation technology, due to its ore dressing disposal ability
It is small, ore dressing grade is low, low yield and be gradually eliminated；Developed floatation process and high intensity magnetic separation process later, but for weak magnetic
The hematite-limonite of property its sort technical indicator and be not reaching to gratifying effect；Pick up low-grade, fine-grained disseminated grain red iron
Ore deposit and hematite-limonite, to reach purpose that is energy-saving and improving concentrate quality, its ore grinding, sorting process typically use multistage rank
Section ore grinding, the principle process of stage grading, the quality of magnetic concentrate such as need to be further improved, low intensity magnetic separation-reverse flotation connection can be used
Close technique.But for the thinner hematite-limonite of disseminated grain size, silicon dropped by low intensity magnetic separation-reverse flotation process integration upgrading, then needed
Multistage ore grinding is wanted to dissociate gangue as far as possible, not only energy resource consumption and investment are big, and the beneficiating efficiency and rate of recovery is relatively low, cost
It is high, it is difficult to realize that the economy of silicate-type hematite-limonite sorts.In order to reduce cost and improve beneficiating efficiency, mill is only reduced
Ore deposit, but cause SiO2It is primarily present in coarse fraction ore deposit, and this part coarse fraction ore deposit is due to silicate mineral content height, it is difficult
Preferable result is obtained to be handled with reverse flotation, therefore is the ore dressing problem place of current silicate-type hematite-limonite.For red
The ore dressing of limonite, the country originally mainly used roasting-magnetic separation, because production and technical indication is poor, cause roasting-magnetic separation work
Skill has just tapered off application early in the 1990s because cost is high；For vignite, also have using high intensity magnetic separation-just
Joint flotation technology carries out ore dressing, the shortcomings that to evade ferromagnetism poor selectivity, but there is also the Iron grade of flotation tailing is too high,
The problem of causing the iron ore concentrate rate of recovery too low.Until today, although there are many works that can promote hematite-limonite aeneficiation effect
Skill technology, but the ore-dressing technique for being related to ultra-fine grade silicate-type hematite-limonite is still a great problem.Therefore, explore a kind of
Simply, the upgrading drop silicon method of reliable silicate-type hematite-limonite rougher concentration, is to expand silicate-type hematite-limonite application
Basic road, there is important value.
The content of the invention
It is an object of the invention to provide a kind of technical maturity, index is stable, simple to operate, upgrading drop silicon positive effect,
The upgrading drop silicon of yield and the high silicate-type hematite-limonite rougher concentration of the rate of recovery top-ups choosing method.
The present invention include roughing, it is selected, scan step, specifically include：
A, roughing：By granularity -0.045mm accountings not less than 55%, TFe grades 40~55%, SiO2Grade is not less than 10% silicic acid
Salt form hematite-limonite rougher concentration adds water to size mixing to concentration 30~40%, and then ore pulp is put into roughing floatation equipment, adds successively
Enter collecting agent and inhibitor, supplementary catching agent, the H of the concentration of PH regulators 5%2SO4Stirring carries out direct flotation, obtains rougher concentration bubble
Foam and rougher tailings；
B, it is selected：The rougher concentration foam that step A obtains is put into selected floatation equipment, inhibitor stirring is added and is top-uped
Choosing, obtains selected concentrate and cleaner tailings；
C, scan：The cleaner tailings that step B is obtained, which is put into, to be scanned in equipment, add collecting agent and inhibitor, supplementary catching agent,
The H of the concentration of PH regulators 5%2SO4Stirring is scanned, and is obtained scavenger concentrate and is scanned mine tailing, by selected concentrate and scavenger concentrate
Merging obtains upgrading drop silicon concentrate.
The present invention is using technical maturity, direct floatation process simple to operate, suitable for handling fine grain teeth cloth ore, through " one
Thick one single-minded sweeps " direct floatation process flow coordinate the medicaments of selected combinations, overcome conventional low intensity magnetic separation-reverse flotation joint work
Skill solves magnetic iron ore high intensity magnetic separation-direct flotation process integration tail again to the ore dressing problem of fine-grained disseminated grain silicate-type hematite-limonite
The problem of ore deposit Iron grade is higher so that the selected concentrate that silicate-type hematite-limonite rougher concentration obtains after direct flotation of the present invention
TFe grades are more than 55%, SiO after merging scavenger concentrate2Grade is less than 7.5%, yield more than 55% and the rate of recovery is more than 75%, and
Reagent consumption is low, can substantially reduce the pollution to environment and reduce production cost.It is multiple by being carried out to same rougher concentration
Replica test verifies that direct flotation method index of the invention is stable, technical maturity.Therefore, the present invention has technical maturity, referred to
The characteristics of mark is stable, simple to operate, silicon positive effect drops in upgrading, yield and the rate of recovery are high.
Brief description of the drawings
Fig. 1 is the two sections strong magnetic rougher concentration direct flotation schematic flow sheet of the present invention；
Fig. 2 is the centrifugation rougher concentration direct flotation schematic flow sheet of the present invention；
The three sections strong magnetic rougher concentration direct flotation schematic flow sheet that it is the present invention that Fig. 3, which is,.
Embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples, but the present invention is not subject in any way
Limitation, based on present invention teach that any changes and modifications made, belong to protection scope of the present invention.
As shown in Figure 1,2 and 3, the present invention include roughing, it is selected, scan step, specifically include：
A, roughing：By granularity -0.045mm accountings not less than 55%, TFe grades 40~55%, SiO2Grade is not less than 10% silicic acid
Salt form hematite-limonite rougher concentration adds water to size mixing to concentration 30~40%, and then ore pulp is put into roughing floatation equipment, adds successively
Enter collecting agent and inhibitor, supplementary catching agent, the H of the concentration of PH regulators 5%2SO4Stirring carries out direct flotation, obtains rougher concentration bubble
Foam and rougher tailings；
B, it is selected：The rougher concentration foam that step A obtains is put into selected floatation equipment, inhibitor stirring is added and is top-uped
Choosing, obtains selected concentrate and cleaner tailings；
C, scan：The cleaner tailings that step B is obtained, which is put into, to be scanned in equipment, add collecting agent and inhibitor, supplementary catching agent,
The H of the concentration of PH regulators 5%2SO4Stirring is scanned, and is obtained scavenger concentrate and is scanned mine tailing, by selected concentrate and scavenger concentrate
Merging obtains upgrading drop silicon concentrate.
What the step C obtained scan, and mine tailing returns merges progress with the silicate-type hematite-limonite rougher concentration of step A
Water is added to size mixing.
The collecting agent is aliphatic acid, modified fat acid, petroleum-sulfonate, LPA-1 and/or LPB-7, the inhibitor
For cornstarch, tapioca or AD-1, the supplementary catching agent is terpenic oil or NS-1.
According to dry mine gauge of the flotation to ore deposit in the step A：LPA-1 dosage is 350~550g/t, LPB-7 use
The dosage measured as 450~750g/t, AD-1 is 500~700g/t, NS-1 dosage is 200~300g/t, the H of 5% concentration2SO4
Dosage be 4~6ml/t.
According to dry mine gauge of the flotation to ore deposit in the step B：AD-1 dosage is 250~450g/t.
According to dry mine gauge of the flotation to ore deposit in the step C：LPB-7 dosage is 200~500g/t, AD-1 dosage
Dosage for 130~220g/t, NS-1 is 50~120g/t, the H of 5% concentration2SO4Dosage be 2~4ml/t.
It is not small not less than 55%, TFe grades that the silicate-type hematite-limonite rougher concentration includes granularity -0.045mm accountings
In 43%, SiO2Grade is not less than the 18% two sections strong magnetic rougher concentration of silicate-type hematite-limonite；Granularity -0.045mm accountings are not
Less than 62%, TFe grades not less than 50%, SiO2Silicate-type hematite-limonite centrifugation rougher concentration of the grade not less than 10%；Grain
Degree -0.045mm accountings are not less than 67%, TFe grades not less than 40%, SiO2Grade is not less than 18% silicate-type hematite-limonite
Three sections strong magnetic rougher concentration.
According to dry mine gauge of the flotation to ore deposit in the step A of the two sections strong magnetic rougher concentration of silicate-type hematite-limonite：
LPA-1 dosage is 450~550g/t, LPB-7 dosage is 450~550g/t, AD-1 dosage is 500~700g/t, NS-
1 dosage is 200~300g/t, the H of 5% concentration2SO4Dosage be 4~6ml/t；According to flotation to the dry of ore deposit in the step B
Ore deposit gauge：AD-1 dosage is 250~350g/t；According to dry mine gauge of the flotation to ore deposit in the step C：LPA-1 dosage
Dosage for 100~150g/t, LPB-7 is 200~300g/t, AD-1 dosage is 130~180g/t, NS-1 dosage is 80
~120g/t, 5% concentration H2SO4Dosage be 2~4ml/t.
According to dry mine gauge of the flotation to ore deposit in the step A of the silicate-type hematite-limonite centrifugation rougher concentration：LPB-7
Dosage be 650~750g/t, AD-1 dosage is 500~700g/t, NS-1 dosage is 200~300g/t, 5% concentration
H2SO4Dosage be 4~6ml/t；According to dry mine gauge of the flotation to ore deposit in the step B：AD-1 dosage is 350~450g/
t；According to dry mine gauge of the flotation to ore deposit in the step C：LPB-7 dosage is 400~500g/t, AD-1 dosage is 130
~180g/t, NS-1 dosage is 80~120g/t, the H of 5% concentration2SO4Dosage be 2~4ml/t.
According to dry mine gauge of the flotation to ore deposit in the step A of the three sections strong magnetic rougher concentration of silicate-type hematite-limonite：LPA-1
Dosage be 350~450g/t, LPB-7 dosage is 450~550g/t, AD-1 dosage is 500~700g/t, NS-1 use
Measure as 200~300g/t, 5% concentration H2SO4Dosage be 4~6ml/t；According to dry mine amount of the flotation to ore deposit in the step B
Meter：AD-1 dosage is 250~350g/t；According to dry mine gauge of the flotation to ore deposit in the step C：LPB-7 dosage is 200
~300g/t, AD-1 dosage is 170~220g/t, NS-1 dosage is 50~100g/t, the H of 5% concentration2SO4Dosage be 2
~4ml/t.
Mixing time is 3~6min after mixing time is 3~6min after the LPA-1 is added, LPB-7 is added, AD-1 adds
Enter rear mixing time be 6~10min, NS-1 add after mixing time be 3~6min, the H of 5% concentration2SO4Mixing time after addition
For 1~4min.
Experimental example 1：
The iron ore concentrate obtained to Dahongshan iron ore silicate-type hematite-limonite using three kinds of roughing methods carries out chemistry analysis
Such as table 1, grain size analysis such as table 2.
The rougher concentration chemical property of table 1（%）
From table 1 it follows that the iron mineral of 3 kinds of samples is mainly hematite-limonite, magnetic iron content is few, and particularly three select factory three
Section high intensity magnetic mineral is practically free of Armco magnetic iron, and this adds difficulty to the reprocessing of hematite-limonite sections concentrate.In three kinds of samples
Silicone content is higher, causes the contaminant overstandard of concentrate.
The rougher concentration granularity of table 2（%）
The SiO in 3 kinds of samples is can be seen that from the granularity distribution result in table 22Grade is up to 30% in coarse grain level segment, this portion
Divide coarse fraction silicate mineral content high, it is difficult to reverse flotation processing, it is necessary to which fine grinding ore deposit could obtain the better effects of reverse flotation,
This part iron content is not high simultaneously.
Embodiment 1
" one thick one single-minded sweep " direct flotation is carried out using the two sections strong magnetic roughing iron ore concentrate in experimental example 1 as raw ore, step is as follows：
S100：Add water to size mixing to concentration 35% two sections strong magnetic roughing iron ore concentrate, then ore pulp be put into roughing floatation equipment,
Add 500g/t LPA-1 and 500g/t LPB-7 collecting agents and 600g/t AD- to the dry mine gauge of ore deposit according to flotation successively
1 inhibitor, 250g/t NS-1 supplementary catching agents, 5ml/t 5% concentration H2SO4As the agitated carry out direct flotation of PH regulators,
Obtain rougher concentration foam and rougher tailings；
S200：Above-mentioned rougher concentration foam is put into selected floatation equipment, 300g/ is added according to dry mine gauge of the flotation to ore deposit
The t agitated carry out direct flotation of AD-1 inhibitor, obtains selected concentrate and cleaner tailings；
S300：Above-mentioned cleaner tailings is put into and scanned in equipment, adds 125g/t LPA-1 to the dry mine gauge of ore deposit according to flotation
It is LPB-7 collecting agents and 150g/t AD-1 inhibitor, 100g/t NS-1 supplementary catching agents with 250g/t, the 5% of 3ml/t dense
Spend H2SO4Scanned as the stirring of PH regulators, obtain scavenger concentrate and scan mine tailing, selected concentrate and scavenger concentrate are closed
And obtain upgrading drop silicon concentrate.
Above-mentioned direct flotation result such as table 3.
The 3 two sections strong magnetic rougher concentration direct flotation result 1 of table（%）
Embodiment 2
" one thick one single-minded sweep " direct flotation is carried out using the two sections strong magnetic roughing iron ore concentrate in experimental example 1 as raw ore, step is as follows：
S100：Add water to size mixing to concentration 40% two sections strong magnetic roughing iron ore concentrate, then ore pulp be put into roughing floatation equipment,
Add 550g/t LPA-1 and 450g/t LPB-7 collecting agents and 600g/t AD- to the dry mine gauge of ore deposit according to flotation successively
1 inhibitor, 300g/t NS-1 supplementary catching agents, 6ml/t 5% concentration H2SO4As the agitated carry out direct flotation of PH regulators,
Obtain rougher concentration foam and rougher tailings；
S200：Above-mentioned rougher concentration foam is put into selected floatation equipment, 350g/ is added according to dry mine gauge of the flotation to ore deposit
The t agitated carry out direct flotation of AD-1 inhibitor, obtains selected concentrate and cleaner tailings；
S300：Above-mentioned cleaner tailings is put into and scanned in equipment, adds 150g/t LPA-1 to the dry mine gauge of ore deposit according to flotation
LPB-7 collecting agents and 180g/t AD-1 inhibitor, 80g/t NS-1 supplementary catching agents, 2ml/t 5% concentration with 250g/t
H2SO4Scanned as the stirring of PH regulators, obtain scavenger concentrate and scan mine tailing, selected concentrate and scavenger concentrate are merged
Obtain upgrading drop silicon concentrate.
Above-mentioned direct flotation result such as table 4.
The 4 two sections strong magnetic rougher concentration direct flotation result 2 of table（%）
Embodiment 3
" one thick one single-minded sweep " direct flotation is carried out using the two sections strong magnetic roughing iron ore concentrate in experimental example 1 as raw ore, step is as follows：
S100：Add water to size mixing to concentration 30% two sections strong magnetic roughing iron ore concentrate, then ore pulp be put into roughing floatation equipment,
Add 450g/t LPA-1 and 550g/t LPB-7 collecting agents and 500g/t AD- to the dry mine gauge of ore deposit according to flotation successively
1 inhibitor, 200g/t NS-1 supplementary catching agents, 4ml/t 5% concentration H2SO4As the agitated carry out direct flotation of PH regulators,
Obtain rougher concentration foam and rougher tailings；
S200：Above-mentioned rougher concentration foam is put into selected floatation equipment, 250g/ is added according to dry mine gauge of the flotation to ore deposit
The t agitated carry out direct flotation of AD-1 inhibitor, obtains selected concentrate and cleaner tailings；
S300：Above-mentioned cleaner tailings is put into and scanned in equipment, adds 100g/t LPA-1 to the dry mine gauge of ore deposit according to flotation
It is LPB-7 collecting agents and 130g/t AD-1 inhibitor, 120g/t NS-1 supplementary catching agents with 300g/t, the 5% of 4ml/t dense
Spend H2SO4Scanned as the stirring of PH regulators, obtain scavenger concentrate and scan mine tailing, selected concentrate and scavenger concentrate are closed
And obtain upgrading drop silicon concentrate.
Above-mentioned direct flotation result such as table 5.
The 5 two sections strong magnetic rougher concentration direct flotation result 3 of table（%）
Embodiment 4
" one thick one single-minded sweep " direct flotation is carried out using the centrifugation roughing iron ore concentrate in experimental example 1 as raw ore, step is as follows：
S100：Add water to size mixing to concentration 35% centrifugation roughing iron ore concentrate, then ore pulp is put into roughing floatation equipment, successively
700g/t LPB-7 collecting agents, 600g/t AD-1 inhibitor, 250g/t NS-1 are added to the dry mine gauge of ore deposit according to flotation
5% concentration H of supplementary catching agent, 5ml/t2SO4As the agitated carry out direct flotation of PH regulators, rougher concentration foam and thick is obtained
Select mine tailing；
S200：Above-mentioned rougher concentration foam is put into selected floatation equipment, 400g/ is added according to dry mine gauge of the flotation to ore deposit
The t agitated carry out direct flotation of AD-1 inhibitor, obtains selected concentrate and cleaner tailings；
S300：Above-mentioned cleaner tailings is put into and scanned in equipment, adds 450g/t LPB-7 to the dry mine gauge of ore deposit according to flotation
Collecting agent, 150g/t AD-1 inhibitor, 100g/t NS-1 supplementary catching agents, 3ml/t 5% concentration H2SO4Adjusted as PH
Agent stirring is scanned, and is obtained scavenger concentrate and is scanned mine tailing, and selected concentrate and scavenger concentrate are merged to obtain upgrading drop silicon essence
Ore deposit.
Above-mentioned direct flotation result such as table 6.
Table 6 centrifuges rougher concentration direct flotation result 1（%）
Embodiment 5
" one thick one single-minded sweep " direct flotation is carried out using the centrifugation roughing iron ore concentrate in experimental example 1 as raw ore, step is as follows：
S100：Add water to size mixing to concentration 30% centrifugation roughing iron ore concentrate, then ore pulp is put into roughing floatation equipment, successively
650g/t LPB-7 collecting agents, 700g/t AD-1 inhibitor, 300g/t NS-1 are added to the dry mine gauge of ore deposit according to flotation
5% concentration H of supplementary catching agent, 6ml/t2SO4As the agitated carry out direct flotation of PH regulators, rougher concentration foam and thick is obtained
Select mine tailing；
S200：Above-mentioned rougher concentration foam is put into selected floatation equipment, 350g/ is added according to dry mine gauge of the flotation to ore deposit
The t agitated carry out direct flotation of AD-1 inhibitor, obtains selected concentrate and cleaner tailings；
S300：Above-mentioned cleaner tailings is put into and scanned in equipment, adds 500g/t LPB-7 to the dry mine gauge of ore deposit according to flotation
Collecting agent, 130g/t AD-1 inhibitor, 80g/t NS-1 supplementary catching agents, 2ml/t 5% concentration H2SO4As PH regulators
Stirring is scanned, and is obtained scavenger concentrate and is scanned mine tailing, and selected concentrate and scavenger concentrate are merged to obtain upgrading drop silicon concentrate.
Above-mentioned direct flotation result such as table 7.
Table 7 centrifuges rougher concentration direct flotation result 2（%）
Embodiment 6
" one thick one single-minded sweep " direct flotation is carried out using the centrifugation roughing iron ore concentrate in experimental example 1 as raw ore, step is as follows：
S100：Add water to size mixing to concentration 40% centrifugation roughing iron ore concentrate, then ore pulp is put into roughing floatation equipment, successively
750g/t LPB-7 collecting agents, 500g/t AD-1 inhibitor, 200g/t NS-1 are added to the dry mine gauge of ore deposit according to flotation
5% concentration H of supplementary catching agent, 4ml/t2SO4As the agitated carry out direct flotation of PH regulators, rougher concentration foam and thick is obtained
Select mine tailing；
S200：Above-mentioned rougher concentration foam is put into selected floatation equipment, 450g/ is added according to dry mine gauge of the flotation to ore deposit
The t agitated carry out direct flotation of AD-1 inhibitor, obtains selected concentrate and cleaner tailings；
S300：Above-mentioned cleaner tailings is put into and scanned in equipment, adds 400g/t LPB-7 to the dry mine gauge of ore deposit according to flotation
Collecting agent, 180g/t AD-1 inhibitor, 120g/t NS-1 supplementary catching agents, 4ml/t 5% concentration H2SO4Adjusted as PH
Agent stirring is scanned, and is obtained scavenger concentrate and is scanned mine tailing, and selected concentrate and scavenger concentrate are merged to obtain upgrading drop silicon essence
Ore deposit.
Above-mentioned direct flotation result such as table 8.
Table 8 centrifuges rougher concentration direct flotation result 3（%）
Embodiment 7
" one thick one single-minded sweep " direct flotation is carried out using the three sections strong magnetic roughing iron ore concentrate in experimental example 1 as raw ore, step is as follows：
S100：Add water to size mixing to concentration 35% three sections strong magnetic roughing iron ore concentrate, then ore pulp be put into roughing floatation equipment,
Add 400g/t LPA-1 and 500g/t LPB-7 collecting agents and 600g/t AD- to the dry mine gauge of ore deposit according to flotation successively
1 inhibitor, 250g/t NS-1 supplementary catching agents, 5ml/t 5% concentration H2SO4As the agitated carry out direct flotation of PH regulators,
Obtain rougher concentration foam and rougher tailings；
S200：Above-mentioned rougher concentration foam is put into selected floatation equipment, 300g/ is added according to dry mine gauge of the flotation to ore deposit
The t agitated carry out direct flotation of AD-1 inhibitor, obtains selected concentrate and cleaner tailings；
S300：Above-mentioned cleaner tailings is put into and scanned in equipment, adds 250g/t LPB-7 to the dry mine gauge of ore deposit according to flotation
Collecting agent, 200g/t AD-1 inhibitor, 75g/t NS-1 supplementary catching agents, 3ml/t 5% concentration H2SO4As PH regulators
Stirring is scanned, and is obtained scavenger concentrate and is scanned mine tailing, and selected concentrate and scavenger concentrate are merged to obtain upgrading drop silicon concentrate.
Above-mentioned direct flotation result such as table 9.
The 9 three sections strong magnetic rougher concentration direct flotation result 1 of table（%）
Embodiment 8
" one thick one single-minded sweep " direct flotation is carried out using the three sections strong magnetic roughing iron ore concentrate in experimental example 1 as raw ore, step is as follows：
S100：Add water to size mixing to concentration 30% three sections strong magnetic roughing iron ore concentrate, then ore pulp be put into roughing floatation equipment,
Add 350g/t LPA-1 and 500g/t LPB-7 collecting agents and 500g/t AD- to the dry mine gauge of ore deposit according to flotation successively
1 inhibitor, 200g/t NS-1 supplementary catching agents, 4ml/t 5% concentration H2SO4As the agitated carry out direct flotation of PH regulators,
Obtain rougher concentration foam and rougher tailings；
S200：Above-mentioned rougher concentration foam is put into selected floatation equipment, 250g/ is added according to dry mine gauge of the flotation to ore deposit
The t agitated carry out direct flotation of AD-1 inhibitor, obtains selected concentrate and cleaner tailings；
S300：Above-mentioned cleaner tailings is put into and scanned in equipment, adds 200g/t LPB-7 to the dry mine gauge of ore deposit according to flotation
Collecting agent, 220g/t AD-1 inhibitor, 50g/t NS-1 supplementary catching agents, 2ml/t 5% concentration H2SO4As PH regulators
Stirring is scanned, and is obtained scavenger concentrate and is scanned mine tailing, and selected concentrate and scavenger concentrate are merged to obtain upgrading drop silicon concentrate.
Above-mentioned direct flotation result such as table 10.
The 10 3 sections strong magnetic rougher concentration direct flotation result 2 of table（%）
Embodiment 9
" one thick one single-minded sweep " direct flotation is carried out using the three sections strong magnetic roughing iron ore concentrate in experimental example 1 as raw ore, step is as follows：
S100：Add water to size mixing to concentration 40% three sections strong magnetic roughing iron ore concentrate, then ore pulp be put into roughing floatation equipment,
Add 450g/t LPA-1 and 450g/t LPB-7 collecting agents and 700g/t AD- to the dry mine gauge of ore deposit according to flotation successively
1 inhibitor, 300g/t NS-1 supplementary catching agents, 6ml/t 5% concentration H2SO4As the agitated carry out direct flotation of PH regulators,
Obtain rougher concentration foam and rougher tailings；
S200：Above-mentioned rougher concentration foam is put into selected floatation equipment, 350g/ is added according to dry mine gauge of the flotation to ore deposit
The t agitated carry out direct flotation of AD-1 inhibitor, obtains selected concentrate and cleaner tailings；
S300：Above-mentioned cleaner tailings is put into and scanned in equipment, adds 300g/t LPB-7 to the dry mine gauge of ore deposit according to flotation
Collecting agent, 170g/t AD-1 inhibitor, 100g/t NS-1 supplementary catching agents, 4ml/t 5% concentration H2SO4Adjusted as PH
Agent stirring is scanned, and is obtained scavenger concentrate and is scanned mine tailing, and selected concentrate and scavenger concentrate are merged to obtain upgrading drop silicon essence
Ore deposit.
Above-mentioned direct flotation result such as table 11.
The 11 3 sections strong magnetic rougher concentration direct flotation result 3 of table（%）
Claims (10)
- The choosing method 1. a kind of upgrading drop silicon of silicate-type hematite-limonite rougher concentration top-ups, it is characterised in that including roughing, essence Select, scan step, specifically include：A, roughing：By granularity -0.045mm accountings not less than 55%, TFe grades 40~55%, SiO2Grade is not less than 10% silicic acid Salt form hematite-limonite rougher concentration adds water to size mixing to concentration 30~40%, and then ore pulp is put into roughing floatation equipment, adds successively Enter collecting agent and inhibitor, supplementary catching agent, the H of the concentration of PH regulators 5%2SO4Stirring carries out direct flotation, obtains rougher concentration bubble Foam and rougher tailings；B, it is selected：The rougher concentration foam that step A obtains is put into selected floatation equipment, inhibitor stirring is added and is top-uped Choosing, obtains selected concentrate and cleaner tailings；C, scan：The cleaner tailings that step B is obtained, which is put into, to be scanned in equipment, add collecting agent and inhibitor, supplementary catching agent, The H of the concentration of PH regulators 5%2SO4Stirring is scanned, and is obtained scavenger concentrate and is scanned mine tailing, by selected concentrate and scavenger concentrate Merging obtains upgrading drop silicon concentrate.
- 2. upgrading drop silicon top-ups choosing method according to claim 1, it is characterised in that what the step C obtained, which scan mine tailing, returns Return to merge with the silicate-type hematite-limonite rougher concentration of step A and carry out adding water to size mixing.
- 3. upgrading drop silicon top-ups choosing method according to claim 1, it is characterised in that the collecting agent is aliphatic acid, modified fat Fat acid, petroleum-sulfonate, LPA-1 and/or LPB-7, the inhibitor are cornstarch, tapioca or AD-1, described auxiliary It is terpenic oil or NS-1 to help collecting agent.
- 4. upgrading drop silicon top-ups choosing method according to claim 3, it is characterised in that according to flotation to ore deposit in the step A Dry mine gauge：LPA-1 dosage is 350~550g/t, LPB-7 dosage is 450~750g/t, AD-1 dosage be 500~ 700g/t, NS-1 dosage are 200~300g/t, the H of 5% concentration2SO4Dosage be 4~6ml/t；According to floating in the step B Select the dry mine gauge to ore deposit：AD-1 dosage is 250~450g/t.
- 5. top-uped choosing method according to the upgrading of claim 3 or 4 drop silicon, it is characterised in that given in the step C according to flotation The dry mine gauge of ore deposit：LPB-7 dosage is 200~500g/t, AD-1 dosage is 130~220g/t, NS-1 dosage is 50 ~120g/t, 5% concentration H2SO4Dosage be 2~4ml/t.
- 6. upgrading drop silicon top-ups choosing method according to claim 3, it is characterised in that the silicate-type hematite-limonite roughing Concentrate includes granularity -0.045mm accountings not less than 55%, TFe grades not less than 43%, SiO2Grade is not less than 18% silicate The two sections strong magnetic rougher concentration of type hematite-limonite；Granularity -0.045mm accountings are not less than 62%, TFe grades not less than 50%, SiO2Product Silicate-type hematite-limonite centrifugation rougher concentration of the position not less than 10%；Granularity -0.045mm accountings are not less than 67%, TFe grades not Less than 40%, SiO2Grade is not less than the 18% three sections strong magnetic rougher concentration of silicate-type hematite-limonite.
- 7. upgrading drop silicon top-ups choosing method according to claim 6, it is characterised in that two sections of the silicate-type hematite-limonite According to dry mine gauge of the flotation to ore deposit in the step A of strong magnetic rougher concentration：LPA-1 dosage is 450~550g/t, LPB-7 Dosage is 450~550g/t, AD-1 dosage is 500~700g/t, NS-1 dosage is 200~300g/t, 5% concentration H2SO4Dosage be 4~6ml/t；According to dry mine gauge of the flotation to ore deposit in the step B：AD-1 dosage is 250~350g/ t；According to dry mine gauge of the flotation to ore deposit in the step C：LPA-1 dosage is 100~150g/t, LPB-7 dosage is 200 ~300g/t, AD-1 dosage is 130~180g/t, NS-1 dosage is 80~120g/t, the H of 5% concentration2SO4Dosage be 2 ~4ml/t.
- 8. upgrading drop silicon top-ups choosing method according to claim 6, it is characterised in that the silicate-type hematite-limonite centrifugation According to dry mine gauge of the flotation to ore deposit in the step A of rougher concentration：LPB-7 dosage is 650~750g/t, AD-1 dosage is 500~700g/t, NS-1 dosage are 200~300g/t, the H of 5% concentration2SO4Dosage be 4~6ml/t；In the step B According to dry mine gauge of the flotation to ore deposit：AD-1 dosage is 350~450g/t；According to dry mine of the flotation to ore deposit in the step C Gauge：LPB-7 dosage is 400~500g/t, AD-1 dosage is 130~180g/t, NS-1 dosage be 80~120g/t, The H of 5% concentration2SO4Dosage be 2~4ml/t.
- 9. upgrading drop silicon top-ups choosing method according to claim 6, it is characterised in that three sections of the silicate-type hematite-limonite According to dry mine gauge of the flotation to ore deposit in the step A of strong magnetic rougher concentration：LPA-1 dosage is 350~450g/t, LPB-7 Dosage is 450~550g/t, AD-1 dosage is 500~700g/t, NS-1 dosage is 200~300g/t, 5% concentration H2SO4Dosage be 4~6ml/t；According to dry mine gauge of the flotation to ore deposit in the step B：AD-1 dosage is 250~350g/ t；According to dry mine gauge of the flotation to ore deposit in the step C：LPB-7 dosage is 200~300g/t, AD-1 dosage is 170 ~220g/t, NS-1 dosage is 50~100g/t, the H of 5% concentration2SO4Dosage be 2~4ml/t.
- 10. top-uped choosing method according to claim 7,8,9 upgradings drop silicon, it is characterised in that the LPA-1 is stirred after adding After mixing time is 3~6min after time is 3~6min, LPB-7 is added, AD-1 is added mixing time be 6~10min, NS-1 Mixing time is 3~6min, the H of 5% concentration after addition2SO4Mixing time is 1~4min after addition.
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