CN106269204A - A kind of energy saving technique processing extreme poverty bloodstone wet type pre-selecting rough concentrate - Google Patents
A kind of energy saving technique processing extreme poverty bloodstone wet type pre-selecting rough concentrate Download PDFInfo
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- CN106269204A CN106269204A CN201610676287.9A CN201610676287A CN106269204A CN 106269204 A CN106269204 A CN 106269204A CN 201610676287 A CN201610676287 A CN 201610676287A CN 106269204 A CN106269204 A CN 106269204A
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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
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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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
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
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Abstract
The present invention relates to a kind of energy saving technique processing extreme poverty bloodstone wet type pre-selecting rough concentrate, it is characterised in that comprise the following steps: 1) wet type pre-selecting rough concentrate is fed high-frequency dewatering screen carry out Dewatering operation；2) oversize of high-frequency dewatering screen directly feeds primary ball mill；3) the ore discharge product of primary ball mill feeds one section of permanent magnetism weak magnetic separator and one section of strong magnetomechanical carries out magnetic separation, one section of strong magnetic tail throws tail, one section of inferior fine magnetite concentrate and one section of high intensity magnetic mineral merge into mixed magnetic concentrate product, 4) undersize of high-frequency dewatering screen merge with mixed magnetic essence product feed thickener carry out concentrate operation, concentrate operation underflow product and feed thickness grading operation again after scalping cyclone feeds scalping cyclone classification to pump pond, ore deposit, it is that coarse fraction product and the fine particle product that granularity is 85% ~ 90% of 200 mesh content 40% ~ 45% sorts respectively again to granularity after thickness grading.Present invention reduces one section of ball mill ore grinding energy consumption, the power source consumption and the follow-up ore grinding that also reduce scalping cyclone equipment sort ore deposit amount, thus reduce further ore dressing energy consumption, improve beneficiating efficiency.
Description
Technical field
The invention belongs to technical field of beneficiation, process the energy-conservation of extreme poverty bloodstone wet type pre-selecting rough concentrate particularly to a kind of
Technique.
Background technology:
At present, ore dressing plant processes extreme poverty bloodstone and generally uses coarse grain wet type pre-selecting PROCESS FOR TREATMENT, after first this technique will slightly break
The extreme poverty hematite that grade is about 22% feed semi-autogenous mill, it is the straight of 2 mm that semi-autogenous mill ore discharge feeds screen size
After linearly coupled sieve screening, oversize returns semi-autogenous mill, and the linear vibrating screen undersize of 2～0 mm granularity feeds wet type
Preliminary election weak magnetic separator obtains the coarse grain inferior fine magnetite concentrate that grade is about 44%；Grade be about 19% preliminary election weak magnetic separator mine tailing give
Enter wet type pre-selecting intensity magnetic separator, it is thus achieved that grade is the coarse grain high intensity magnetic mineral of about 28%, and preliminary election intensity magnetic separator mine tailing is as coarse grain tail
Dish out in ore deposit；Preliminary election low intensity magnetic separation concentrate product and preliminary election high intensity magnetic mineral product merge into wet type pre-selecting concentrate, this preliminary election concentrate grade
Being about 31%, concentration is about 25%, selects factory that this preliminary election rough concentrate feeds " the stage mill of original place reason Anshan type lean hematite ore
Ore deposit, thickness grading, gravity treatment-magnetic separation-reverse flotation " technological process process, idiographic flow is that the pre-concentrate selection of this coarse grain feeds former technique
Scalping cyclone pump pond in flow process, is sorted by entering former flow process after scalping cyclone classification.(former technique stream
Journey is shown in accompanying drawing 1).Wet type rough concentrate granularity in former flow process is 2～0 mm, is the result table being analyzed to its granularmetric composition
Bright, in pre-concentrate selection, 0.5～0 mm grade product adds up productivity and reaches 75% ~ 80% ,-0.076mm in preliminary election rough concentrate product
(i.e.-200 mesh) grade productivity is more than 35%, and this portioned product feeds primary grinding graded operation and not only increases a ball milling
The treating capacity of graded operation, and the fine fraction product in this portioned product to easily cause product after regrinding overground, affect follow-up
The sorting result of sorting operation, reduces metal recovery rate；Simultaneously as the preliminary election rough concentrate product design in former flow process is relatively low,
Concentration only have about 30% and concentration values fluctuation relatively big, this wet type pre-selecting rough concentrate directly feeds scalping cyclone pump pond,
Cause scalping cyclone equipment to be difficult to stable operation, not only affect grading effect, reduce classification efficiency, and ought once divide
When level hydrocyclone sand concentration is relatively low, returning it into primary ball mill, to cause an ore milling concentration relatively low, so understands serious shadow
Ring the grinding efficiency of a grinding machine, thus increase ore grinding energy consumption.
Summary of the invention
It is an object of the invention to provide a kind of minimizing primary grinding graded operation milling capacity, reduce by one section of ball mill ore grinding
Energy consumption and the power source consumption of scalping cyclone equipment, stably optimize one section of ball mill and the operation of classifying cyclone equipment
Technical parameter, improves the energy saving technique processing extreme poverty bloodstone wet type pre-selecting rough concentrate of beneficiating efficiency.
A kind of energy saving technique processing extreme poverty bloodstone wet type pre-selecting rough concentrate of the present invention, it is characterised in that include following
Step:
1) by granularity be 2～0 mm, concentration be 15% ~ 30%, grade be 30% ~ 45% wet type pre-selecting rough concentrate feed high frequency dehydration
Sieve carries out Dewatering operation；
2) granularity of high-frequency dewatering screen be 2～0.5 mm, concentration be more than 80%, productivity be 20% ~ 25% oversize directly to
Enter primary ball mill；
3) the ore discharge product of primary ball mill feeds one section of permanent magnetism weak magnetic separator and carries out low intensity magnetic separation, and one section of weak magnetomechanical mine tailing feeds one
The strong magnetomechanical of section, one section strong magnetic tail ore deposit dishes out as true tailings, and it is smart that one section of inferior fine magnetite concentrate and one section of high intensity magnetic mineral merge into mixed magnetic
Mineral products, this mixed magnetic essence product design is 20% ~ 30%；
4) granularity be 0.5 below mm, concentration be 17% ~ 23%, productivity be 75% ~ 80% the undersize and of high-frequency dewatering screen
The mixed magnetic essence product merging of 3 steps feeds thickener and carries out concentrating operation, and the overflow concentrating operation is the most sharp as ore dressing plant backwater
With；Concentration be more than 55% concentration operation underflow product as cyclone to mineral products feed scalping cyclone to
Pump pond, ore deposit;
5) scalping cyclone is fed scalping eddy flow to mineral products, warp to ore deposit pump to a cyclone in pump pond, ore deposit
Device, after scalping cyclone classification, concentration is more than 80%, and the scalping sand setting of granularity-200 mesh content 13% ~ 18% is straight
Connecing return primary ball mill, the cyclone overflow that concentration is 45% ~ 50%, granularity is-200 mesh content 55% ~ 60% feeds slightly
Subfractionation operation, is that coarse fraction product and the granularity of-200 mesh content 40% ~ 45% is 85% ~ 90% again to granularity after thickness grading
Fine particle product sorts respectively.
Further, the screen size of described high-frequency dewatering screen is 0.5mm.
Compared with prior art, the invention has the beneficial effects as follows:
1), use the concentration that screens out of high-frequency dewatering screen to reach more than 80% coarse grain pre-concentrate selection product, feed primary ball mill,
Can more effectively control an ore milling concentration, improve the equipment and technology operating parameter of an ore mill, improve grinding efficiency, so
Also reduce ore grinding energy consumption comparatively speaking.
2), by high-frequency dewatering screen undersize that concentration is 18% ~ 20% with and concentration 20% ~ 30% mix magnetic concentrate product and merge
Feeding concentration basin to concentrate, concentration more than 55% concentration basin underflow to ore deposit, stably optimizes an eddy flow as scalping cyclone
Device and primary ball mill equipment to ore deposit condition and operating technology parameter, improve ore grinding and classification efficiency.
3), by preliminary election rough concentrate after high-frequency dewatering screen screening and dewatering, the fine particle product of productivity 75% ~ 80% is separated
Directly feeding one section of classifying cyclone, overflowing through a rotation feeds thickness grading operation classification, can after this part fine particle product is classified
Directly to sort, which reduces the ore grinding treating capacity of one section of ball mill, reduce a ball milling ore grinding energy consumption, reduce
Ore grinding cost.
Accompanying drawing explanation
Fig. 1 is the former process chart that extreme poverty hematite separation factory uses coarse grain wet type pre-selecting PROCESS FOR TREATMENT.
Fig. 2 is a kind of energy saving technique flow chart processing extreme poverty bloodstone wet type pre-selecting rough concentrate of the present invention.
Detailed description of the invention
As shown in Figure 2.
A kind of energy saving technique processing extreme poverty bloodstone wet type pre-selecting rough concentrate of the present invention, it is characterised in that include following
Step:
1) by granularity be 2～0mm, concentration be 15% ~ 30%, grade be 30% ~ 45%
Wet type pre-selecting rough concentrate feed high-frequency dewatering screen and carry out Dewatering operation, the screen size of described high-frequency dewatering screen
For 0.5mm；
2) granularity of high-frequency dewatering screen be 2～0.5 mm, concentration be more than 80%, productivity be 20% ~ 25% oversize directly to
Enter primary ball mill；
The concentration using high-frequency dewatering screen to screen out reaches more than 80% coarse grain pre-concentrate selection product, feeds primary ball mill, permissible
More effectively control an ore milling concentration, improve the equipment and technology operating parameter of an ore mill, improve grinding efficiency, the most relative
For also reduce ore grinding energy consumption.
3) the ore discharge product of primary ball mill feeds one section of permanent magnetism weak magnetic separator and carries out low intensity magnetic separation, and one section of weak magnetomechanical mine tailing is given
Entering one section of strong magnetomechanical, dishing out as true tailings in one section strong magnetic tail ore deposit, one section of inferior fine magnetite concentrate and one section of high intensity magnetic mineral are merged into mixed
Magnetic concentrate product, this mixed magnetic essence product design is 20% ~ 30%；
Coarse grain dewatering screen oversize after high-frequency dewatering screen screening, after one section of ball mill ore grinding, one section of ball milling ore discharge product
Middle part gangue mineral has reached monomer dissociation, one section of ball milling ore discharge product is fed one section of weak magnetic separator, one section of strong magnetomechanical is entered
Row sorts, and one section of strong magnetomechanical is dished out a part of qualified strong magnetic tail ore deposit under the conditions of corase grind, which reduces the choosing of flow process follow-up ore grinding
Other ore deposit is measured；
4) granularity be 0.5 below mm, concentration be 17% ~ 23%, productivity be 75% ~ 80% the undersize and of high-frequency dewatering screen
The mixed magnetic essence product merging of 3 steps feeds thickener and carries out concentrating operation, and the overflow concentrating operation is the most sharp as ore dressing plant backwater
With；Concentration be more than 55% concentration operation underflow product as cyclone to mineral products feed scalping cyclone to
Pump pond, ore deposit;
By high-frequency dewatering screen undersize that concentration is 17% ~ 23% with and concentration 20% ~ 30% mix magnetic concentrate product merge feed dense
Contracting pond concentrates, and concentration basin underflow density can reach more than 55%, and this underflow, is not only stablized to ore deposit as scalping cyclone
Optimize a cyclone to ore deposit condition and operating parameter, it is ensured that the hydrocyclone sand returning primary ball mill is dense
Degree can reach more than 75%, optimizes and stabilizes primary ball mill equipment operating technology parameter, improves grinding efficiency, relatively come
Say and namely reduce primary ball mill ore grinding energy consumption, reduce ore grinding cost, the most also stabilize place while beneficial effect
Manage the operating of the technological process of this wet type pre-selecting concentrate；
5) scalping cyclone is fed scalping eddy flow to mineral products, warp to ore deposit pump to a cyclone in pump pond, ore deposit
Device, after scalping cyclone classification, concentration is more than 80%, and the scalping sand setting of granularity-200 mesh content 13% ~ 18% is straight
Connecing return primary ball mill, the cyclone overflow that concentration is 45% ~ 50%, granularity is-200 mesh content 55% ~ 60% feeds slightly
Subfractionation operation, is that coarse fraction product and the granularity of-200 mesh content 40% ~ 45% is 85% ~ 90% again to granularity after thickness grading
Fine particle product sorts respectively.
Above-mentioned classification, ore grinding, the optimum organization configuration of sorting equipment, reached the optimum efficiency that classification branched ore milling sorts, i.e.
Reduce one section of ball mill ore grinding energy consumption, also reduce power source consumption and the choosing of follow-up ore grinding of scalping cyclone equipment
Other ore deposit is measured, thus reduce further ore dressing energy consumption, improves beneficiating efficiency.
Claims (2)
1. the energy saving technique processing extreme poverty bloodstone wet type pre-selecting rough concentrate, it is characterised in that comprise the following steps:
1) by granularity be 2～0 mm, concentration be 15% ~ 30%, grade be 30% ~ 45% wet type pre-selecting rough concentrate feed high frequency dehydration
Sieve carries out Dewatering operation；
2) granularity of high-frequency dewatering screen be 2～0.5 mm, concentration be more than 80%, productivity be 20% ~ 25% oversize directly to
Enter primary ball mill；
3) the ore discharge product of primary ball mill feeds one section of permanent magnetism weak magnetic separator and carries out low intensity magnetic separation, and one section of weak magnetomechanical mine tailing feeds one
The strong magnetomechanical of section, one section strong magnetic tail ore deposit dishes out as true tailings, and it is smart that one section of inferior fine magnetite concentrate and one section of high intensity magnetic mineral merge into mixed magnetic
Mineral products, this mixed magnetic essence product design is 20% ~ 30%；
4) granularity be 0.5 below mm, concentration be 17% ~ 23%, productivity be 75% ~ 80% the undersize and of high-frequency dewatering screen
The mixed magnetic essence product merging of 3 steps feeds thickener and carries out concentrating operation, and the overflow concentrating operation is the most sharp as ore dressing plant backwater
With；Concentration be more than 55% concentration operation underflow product as cyclone to mineral products feed scalping cyclone to
Pump pond, ore deposit;
5) scalping cyclone is fed scalping eddy flow to mineral products, warp to ore deposit pump to a cyclone in pump pond, ore deposit
Device, after scalping cyclone classification, concentration is more than 80%, and the scalping sand setting of granularity-200 mesh content 13% ~ 18% is straight
Connecing return primary ball mill, the cyclone overflow that concentration is 45% ~ 50%, granularity is-200 mesh content 55% ~ 60% feeds slightly
Subfractionation operation, is that coarse fraction product and the granularity of-200 mesh content 40% ~ 45% is 85% ~ 90% again to granularity after thickness grading
Fine particle product sorts respectively.
The energy saving technique of process extreme poverty bloodstone wet type pre-selecting rough concentrate the most according to claim 1, it is characterised in that institute
The screen size of the high-frequency dewatering screen stated is 0.5mm.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107020201A (en) * | 2017-06-14 | 2017-08-08 | 淮南矿业(集团)有限责任公司 | A kind of thickener underflow coarse slime recovery system |
| CN107552220A (en) * | 2017-08-30 | 2018-01-09 | 玉溪大红山矿业有限公司 | A kind of safe screen ore dressing optimize technique for effectively improving concentrate yield |
| CN107661814A (en) * | 2017-10-31 | 2018-02-06 | 中冶北方（大连）工程技术有限公司 | One kind screening magnetic separation mill ore magnetic selection flow sheet equipment arrangement system |
| CN109013077A (en) * | 2018-08-01 | 2018-12-18 | 中冶北方（大连）工程技术有限公司 | A kind of sorting process of earth's surface skarn type bloodstone |
| CN109550566A (en) * | 2018-10-29 | 2019-04-02 | 甘肃酒钢集团宏兴钢铁股份有限公司 | It is a kind of to reduce ore grinding energy consumption, reducing the grinding process crushed |
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| CN113333150A (en) * | 2021-05-13 | 2021-09-03 | 西北矿冶研究院 | Iron ore tailing pulp intermittent grinding and consumption reducing process |
| CN114100845A (en) * | 2021-11-19 | 2022-03-01 | 安徽马钢张庄矿业有限责任公司 | Method for controlling fineness of two-stage overflow of magnetite separation plant |
| CN114405675A (en) * | 2021-12-31 | 2022-04-29 | 玉溪大红山矿业有限公司 | Ore dressing process for iron ore mixed ore |
| CN114453128A (en) * | 2022-02-10 | 2022-05-10 | 天津瀚磷国际贸易有限公司 | Hematite beneficiation process |
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| CN107020201B (en) * | 2017-06-14 | 2023-07-25 | 淮南矿业(集团)有限责任公司 | Thickener underflow coarse slime recovery system |
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| CN109550566A (en) * | 2018-10-29 | 2019-04-02 | 甘肃酒钢集团宏兴钢铁股份有限公司 | It is a kind of to reduce ore grinding energy consumption, reducing the grinding process crushed |
| CN111995158A (en) * | 2020-08-12 | 2020-11-27 | 广东省科学院资源综合利用研究所 | Method for treating emulsified oil sludge-containing wastewater in gem processing industry |
| CN113333150A (en) * | 2021-05-13 | 2021-09-03 | 西北矿冶研究院 | Iron ore tailing pulp intermittent grinding and consumption reducing process |
| CN114100845A (en) * | 2021-11-19 | 2022-03-01 | 安徽马钢张庄矿业有限责任公司 | Method for controlling fineness of two-stage overflow of magnetite separation plant |
| CN114405675B (en) * | 2021-12-31 | 2023-05-16 | 玉溪大红山矿业有限公司 | Mineral separation process for iron ore mixed ore |
| CN114405675A (en) * | 2021-12-31 | 2022-04-29 | 玉溪大红山矿业有限公司 | Ore dressing process for iron ore mixed ore |
| CN114453128A (en) * | 2022-02-10 | 2022-05-10 | 天津瀚磷国际贸易有限公司 | Hematite beneficiation process |
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