CN108906312A - A kind of beneficiation method for diversification raw ore - Google Patents
A kind of beneficiation method for diversification raw ore Download PDFInfo
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- CN108906312A CN108906312A CN201810720530.1A CN201810720530A CN108906312A CN 108906312 A CN108906312 A CN 108906312A CN 201810720530 A CN201810720530 A CN 201810720530A CN 108906312 A CN108906312 A CN 108906312A
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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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- 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
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
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Abstract
The invention discloses a kind of beneficiation methods for diversification raw ore, belong to ore dressing field.The present invention includes the following steps：Step A：Crushing and screening first uses three section of one closed circuit crushing and screening mode, obtains finished breaking product；Step B：Mill selects technique, using stage grinding and stage grading, using flotation, low intensity magnetic separation, strong magnet-gravity technique, obtains comprehensive iron ore concentrate, total tailing, copper concentrate and iron concentrate.It using first three section of one closed circuit crushing and screening mode, is obtained by dry type pre-selection and largely builds road auxiliary material, effectively reduced subsequent mill and be elected to be industry treating capacity, realize the target of " much broken and lessmill, energy-saving "；Technique is selected using mill, using stage grinding, stage grading technique, floatation process and weak magnetic separation process are directlyed adopt after primary grinding, select the higher troilite of yield, it skims more than half tailing, secondary grinding amount is set only to account for the 1/3 of primary grinding amount, compared with Continuous Grinding, energy saving and consumption reduction material consumption is obvious.
Description
Technical field
The present invention relates to ore dressing fields, more specifically to a kind of beneficiation method for diversification raw ore.
Background technique
The stock number of committee's approval is stored up within 1988 through country：3.4 hundred million t of iron ore (5.06 hundred million t of prospective reserves), pyrite 4083
Ten thousand t, 41,190,000 t of Anhydrite Ore.
1, ore properties
(1) ore natural type
It is divided into magnetite ore, bloodstone by ore natural type --- magnetite ore, hematite ore, Huang Tie
Mine --- magnetic iron ore (red) ore, siderite --- magnetic iron ore (red) ore, the main preservation of iron is in magnetic iron ore, and secondly preservation exists
In martite and a small amount of limonite, occupation rate 78.84%, the iron-bearing mineral of iron sulfide is pyrite and micro
Magnetic iron ore, chalcopyrite etc., occupation rate 10.76%, other iron mineral occupation rates are 10.40%.
(2) ore multielement analysis and material phase analysis
Raw ore chemical composition
Test raw ore chemistry multielement analysis and iron, sulphur material phase analysis result are listed in the table below respectively.
Raw ore chemistry multielement analysis
| Element | TFe | SFe | FeO | TS | P | CaO | MgO | SiO2 |
| Content (%) | 31.33 | 27.56 | 5.08 | 6.95 | 0.375 | 8.74 | 2.44 | 16.20 |
| Element | Al2O3 | K2O | Na2O | Ss | V2O5 | TiO2 | Cu | Scaling loss |
| Content (%) | 4.02 | 0.76 | 0.86 | 3.95 | 0.176 | 0.7 | 0.028 | 4.89 |
Raw ore sulphur material phase analysis result
| Analysis project | FenSn+1 | CuFeS2 | FeS2 | CaSO4 |
| Content (%) | 0.33 | 0.01 | 3.95 | 3.04 |
| Distributive law (%) | 4.45 | 0.13 | 53.16 | 42.26 |
Raw ore Fe clusters analyze result
| Phase name | Magnetic iron ore | Martite | Red, limonite | Pyrite | Ferrosilite | Ferric carbonate | It is total |
| Iron content (%) | 19.05 | 2.10 | 4.20 | 3.46 | 1.19 | 2.15 | 32.15 |
| Distributive law (%) | 59.25 | 6.53 | 13.06 | 10.76 | 3.71 | 6.69 | 100.00 |
The mineral composition of raw ore
Metalliferous mineral in ore is mainly iron mineral, and wherein magnetic iron ore, martite institute's accounting column are larger, and there are also few
Bloodstone, limonite, pyrite, chalcopyrite are measured, gangue mineral is mainly diopside, feldspar, quartz, anhydrite etc..
(3) ore texture and the embedding cloth characteristic of mineral
For ore structures based on idiomorphism-hypautomorphic crystal structure, next has its shape crystal structure, metasomatic pseudomorph structure, explanation
Netted or net vein texture and metasomatic relict texture.
Structure of ores is secondly impregnation structure, netted, net vein columnar structure and the miscellaneous columnar structure of spot based on compact massive.
Magnetic iron ore is mainly in idiomorphism-hypautomorphic crystal compact massive and netted, net vein shape aggregate and gangue symbiosis.It is most
Big partial size is 10.00mm, minimum 0.01, general partial size is 0.10~1.50mm.
Pyrite is in based on idiomorphism-hypautomorphic crystal, maximum particle diameter 1.5mm, minimum 0.005mm, and general partial size is more
For 0.30~0.01mm.
2, recyclable mineral
According to above-mentioned raw ore chemistry multielement analysis, recyclable mineral have：Magnetic iron ore, magnetic iron ore, pyrite, brass
Mine, bloodstone, limonite.
For above diversification ore, the prior art is unable to satisfy the utilization rate and the rate of recovery of mineral resources.Therefore, one
Kind is of great significance for the staff in mining technology field for the research and development of the beneficiation method of diversification raw ore.
Through retrieving, existing patent formula is disclosed.Such as Chinese patent：Application number：201010261670.0 patent name：Three
Closed circuit two sections of section one preselects broken new process, publication date：2011.11.30.The patent is related to a kind of three section one closed circuit two sections pre-selections
Broken new process, steps are as follows：Raw ore feeding primary mill is crushed, discharge enters one section of vibrating screen classification, oversize
Into one section of magnetic pulley, it is crushed crusher machine in the concentrate entrance that one section of magnetic pulley sub-elects, the barren rock sub-elected enters refuse bin,
The product of middle crusher enters two sections of vibrating screens together with the undersize of one section of vibrating screen, the oversizes of two sections of vibrating screens into
Enter two sections of magnetic pulleys, the barren rock that two sections of magnetic pulleys sub-elect enters refuse bin, and the concentrate that two sections of magnetic pulleys sub-elect enters thin broken
The product of broken crusher machine, the broken product of type fine disintegrating machine and middle crusher is combined into two sections of vibrating screens and is classified, two sections of vibrating screens
Undersize enter dry-type magnetic extractor, the concentrate of dry-type magnetic extractor is that final products are sent into mill choosing, the barren rock sub-elected into
Enter refuse bin.Using new process of the invention, barren rock is rejected to the maximum extent before ore grinding, reduced into ore grinding amount, reach energy conservation
The purpose of consumption reduction.But disadvantage is that the patent can not carry out efficient ore-dressing practice for diversification ore.
For another example Chinese patent：Application number：201110102723.9 patent name：Water proof and dust proof is breathed freely escutcheon, publication date：
2014.05.28.A kind of ore-dressing plant of the patent disclosure, including raw ore is crushed pulverizer, to the raw ore through crushing into
The vibrating screen of row screening carries out the dry type magnetic separation device of magnetic separation to screened raw ore, to the essence obtained through dry type magnetic separation device
The mixing machine that mine is mixed, the dry type magnetic separation device include concentrate magnetic separation portion, tailing magnetic separation portion, concentrate magnetic separation portion packet
At least two-stage concentrate magnetic separating unit is included, tailing magnetic separation portion includes at least one level tailing magnetic separating unit, the magnetic separation positioned at upstream
The concentrate obtained through magnetic separation is sent to next concentrate magnetic separating unit, the tailing outlet of concentrate magnetic separating units at different levels and tailing by unit
The inlet communication in magnetic separation portion, the concentrate outlet in concentrate magnetic separation portion, the tail concentrate outlet in tailing magnetic separation portion respectively with mixing machine into
Material mouth connection.Invention additionally discloses a kind of ore-dressing techniques.The mineral products taste that ore-dressing plant and ore-dressing technique of the invention obtains
High, mineral the rate of recovery are high.But disadvantage is that the patent can not carry out efficient ore-dressing practice for diversification ore.
1. technical problems to be solved by the inivention
The problems such as present invention is for the utilization rate and the lower rate of recovery of diversification raw ore Mineral Resource in the prior art, mentions
A kind of beneficiation method for diversification raw ore is supplied.The present invention is using first three section of one closed circuit crushing and screening technique, by dry
Formula pre-selection, which obtains, largely builds road auxiliary material, effectively reduces subsequent mill and is elected to be industry treating capacity, realizes " much broken and lessmill, energy conservation drop
The target of consumption "；Technique is selected using mill, using stage grinding, stage grading technique, flotation work is directlyed adopt after primary grinding
Skill and weak magnetic separation process, select the higher troilite of yield respectively and weak magnetic roughing is skimmed more than half tailing, make two sections of mills
Mine amount only accounts for the 1/3 of primary grinding amount, and compared with Continuous Grinding, energy saving and consumption reduction material consumption is obvious.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention is：
A kind of beneficiation method for diversification raw ore of the invention, includes the following steps：
Step A：Crushing and screening first uses three section of one closed circuit crushing and screening mode, finished breaking product is obtained, by ore
The preliminary crushed product that the raw ore final sizing yield ores granularity that granularity is 750~0mm is 12~0mm, total reduction ratio are
62.5 times；
Step B：Mill selects technique, using stage grinding and stage grading, using flotation, low intensity magnetic separation, strong magnet-gravity technique,
Obtain comprehensive iron ore concentrate, iron concentrate, copper concentrate, total tailing.
As a further improvement of the present invention, the step A the specific steps are：
Step A1：The raw ore of extraction is fed by batcher and carries out coarse crushing in primary mill, after coarse crushing by coarse crushing
Ore is promoted to earth's surface ore storage bin by main shaft hoisting system；
Step A2：In be crushed, by the ore that main shaft hoisting system is promoted feed middle crusher carry out in be crushed after obtain
Broken ore, broken ore is transported by belt feeder to screening surge bunker in this；
Step A3：Check screening obtains and returns to mine on finished breaking product and sieve；Double deck screen is used when the check screening
The vibrating screen of net, the screen size of lower screen cloth are less than the screen size of upper screen cloth；
Step A4：Dry type pre-selection, obtains tailing.
As a further improvement of the present invention, the step A4The specific steps are：
Step A41：By the vibration of vibrating screen, finished breaking product is sifted out；
Step A42：It is pre- that the ore left on the upper screen cloth of the vibrating screen and lower screen cloth sieve is subjected to dry type magnetic pulley
Choosing, first pre-selection, which is skimmed, is mixed into the country rock and gangue mineral of ore, and the country rock for being mixed into ore and gangue mineral are tailing；Clout
For feed fine crushing；The tailing is as the material for building road；
Step A43：The type fine disintegrating machine fine crushing that feeds is subjected to fine crushing, the ore after fine crushing is described in
Step A2In screening surge bunker in, formed closed cycle.
As a further improvement of the present invention, the step B the specific steps are：
Step B1：Copper sulphur is mixed floating；
Step B2：Shallow crust structures；
Step B3：Low intensity magnetic separation；
Step B4：High intensity magnetic separation；
Step B5：Gravity treatment；
Step B6：It is mixed to get comprehensive iron ore concentrate.
As a further improvement of the present invention, the step B1Middle copper sulphur it is mixed floating the specific steps are：
Step B11：The finished breaking product is subjected to primary grinding, is classified after ore grinding, selects one section of ore and one
Section classification sand setting；
Step B12：One section of classification sand setting returns to primary grinding, and repeats step B11, finally obtain one section of ore；
Step B13：One section of ore is fed into the mixed floating flotation device of copper sulphur, carries out mixed floating roughing, obtain mixed floating rough concentrate and
Mixed floating rougher tailings；
Step B14：By the mixed floating rough concentrate carry out it is primary it is mixed float selected, select primary mixed floating concentrate and primary mixed floating tail
Mine；
Step B15：To once mix floating concentrate carry out it is secondary it is mixed float selected, select the mixed floating concentrate of copper sulphur and secondary mixed floating tailing；
Step B16：The mixed floating rougher tailings is carried out mixed float to scan, mixed floating scavenger concentrate is selected and mixed float scans tailing；
Step B17：By the primary mixed floating tailing selected, secondary mixed floating tailing and mixed floating scavenger concentrate return step B13, shape
At closed cycle.
As a further improvement of the present invention, the step B2Middle shallow crust structures the specific steps are：
Step B21：The mixed floating concentrate of the copper sulphur is subjected to three sections of ore grindings, obtains three sections of ores；
Step B22：Three sections of ores are fed into floating copper coarse classifier, floating copper roughing is carried out, obtains floating copper rough concentrate and floating copper
Rougher tailings；
Step B23：By the floating copper rough concentrate progress, once floating copper is selected, selects once floating copper concentrate and once floating copper tail
Mine；
Step B24：The secondary floating copper of the once floating copper concentrate progress is selected, select secondary floating copper concentrate and secondary floating copper
Tailing；
Step B25：By the secondary floating copper concentrate progress, floating copper is selected three times, selects final copper concentrate and floats copper three times
Tailing；
Step B26：Floating copper tailing by the secondary floating copper tailing and three times, to return to once floating copper selected, repeats step B23,
Form closed cycle；
Step B27：The floating copper rougher tailings is carried out once floating copper to scan, selects once floating copper scavenger concentrate and primary
Floating copper scans tailing；
Step B28：Floating copper coarse classifier, repetition are returned after the once floating copper scavenger concentrate and primary floating copper tailing are mixed
Step B22, form closed cycle；
Step B29：The once floating copper scanned into tailing carry out secondary floating copper and scan, select secondary floating copper scavenger concentrate and
Secondary floating copper scans tailing；The secondary floating copper scavenger concentrate is returned to once floating copper to scan, repeats step B27, form closed circuit follow
Ring；It is final iron concentrate that the secondary floating copper, which scans tailing,.
As a further improvement of the present invention, the step B3Middle low intensity magnetic separation the specific steps are：
Step B31：By the step B16Obtained in mix it is floating scan tailing and feed weak magnetic separator carry out weak magnetic roughing, select
Weak magnetic rougher concentration and weak magnetic rougher tailings；
Step B32：The weak magnetic rougher concentration is subjected to secondary grinding classification, separates two sections of ores and two sections of classification sand settings；
Two sections of classification sand settings are returned into secondary grinding, repeat secondary grinding classification, it is final to obtain weak magnetic ore；
Step B33：Weak magnetic ore progress weak magnetic is selected, select inferior fine magnetite concentrate and weak magnetic cleaner tailings.
As a further improvement of the present invention, the step B4Middle high intensity magnetic separation the specific steps are：
Step B41：De- slag is sieved by drum deslagging after the weak magnetic cleaner tailings and weak magnetic rougher tailings are mixed；
Step B42：Drum deslagging is sieved into the ore obtained after de- slag and feeds intensity magnetic separator progress high intensity magnetic separation, obtains strong magnetic essence
Mine and high intensity magnetic separation tailing.
As a further improvement of the present invention, the step B5Middle gravity treatment the specific steps are：The high intensity magnetic mineral is given
Enter spiral chute, ore dressing is carried out using gravity by spiral chute, obtains red iron ore concentrate and spiral chute tailing.
As a further improvement of the present invention, the step B6The specific steps are：
Step B61：The inferior fine magnetite concentrate and red iron ore concentrate are subjected to hybrid filtering, the filter cake obtained is final synthesis
Iron ore concentrate；
Step B62：The high intensity magnetic separation tailing and spiral chute tailing are merged, total tailing is obtained.
3. beneficial effect
(1) crushing and screening in the present invention is carried out dry type pre-selection respectively, both may be used using three section of one closed circuit crumbling method
Road auxiliary material largely is built to obtain, subsequent mill can also be effectively reduced and be elected to be industry treating capacity, improve the grade of milling ore,
Realize the target of " much broken and lessmill, energy-saving "；
(2) mill in the present invention selects technique, using stage grinding, stage grading technique, directlys adopt after primary grinding
Floatation process and weak magnetic separation process, select the higher troilite of yield respectively and weak magnetic roughing is skimmed more than half tailing, make
Secondary grinding amount only accounts for the 1/3 of primary grinding amount, and compared with Continuous Grinding, it is obvious to reduce material consumption for energy conservation；
(3) copper sulphur of the invention is mixed floating, after first emersion sulphur and copper, the optional iron of the tailing of flotation, its advantage is that influencing magnet
The magnetic iron ore of concentrate quality can be selected by flotation, and the mine-supplying quantity of flotation is controllable, and the index of flotation operation is more stable, can have
Effect reduces sulfur content in magnetite concentrate；
(4) copper-sulfur separating process in the present invention, copper sulphur carry out copper, sulphur content from flotation is final to be obtained after mixing floating concentrate regrinding
It is improved to grade and all higher copper concentrate of mineral products rate and iron concentrate, beneficiating efficiency；
(5) weak magnetic separation process of the invention, mainly magnetic iron ore, martite, bloodstone, brown iron in diversification raw ore
Mine, troilite and it is difficult to the ferric carbonate recycled, ferrosilite, the present invention is mixed floating to scan tailing by weak magnetic after the mixed floating technique of copper sulphur
It is elected to be industry recycling strongly magnetic mineral, recycling ability is stronger；
(6) high intensity magnetic separation-gravity separation technology of the invention can recycle above-mentioned red, limonite, obtain the higher red iron essence of grade
Mine, total tailing can be used to backfill underground goaf by consolidation techniques, reduce soil erosion and surface subsidence.
Detailed description of the invention
Fig. 1 is a kind of flow chart of crushing and screening in beneficiation method for diversification raw ore；
Fig. 2 is the flow chart that mill selects technique in a kind of beneficiation method for diversification raw ore.
Specific embodiment
To further appreciate that the contents of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
As depicted in figs. 1 and 2, a kind of beneficiation method for diversification raw ore of the invention, includes the following steps：
Step A：Crushing and screening first uses three section of one closed circuit crushing and screening mode, obtains finished breaking product, pass through
Dry type pre-separation using magnetic pulley, which can both obtain, largely builds road auxiliary material, can also effectively reduce subsequent mill and be elected to be industry treating capacity,
The grade of milling ore is improved, realizes the target of " much broken and lessmill, energy-saving ", the specific steps are：
Step A1：The raw ore of extraction is fed by grizzly feeder and carries out coarse crushing, coarse crushing in primary mill by coarse crushing
Ore afterwards is promoted to earth's surface ore storage bin by main shaft hoisting system；
Step A2：In be crushed, by the ore that main shaft hoisting system is promoted feed middle crusher carry out in be crushed after obtain
Broken ore, broken ore is transported by belt feeder to screening surge bunker in this；
Step A3：Check screening obtains and returns to mine on finished breaking product and sieve；Double deck screen is used when the check screening
The vibrating screen of net, the screen size of lower screen cloth are less than the screen size of upper screen cloth；
Step A4：Dry type pre-selection, obtains tailing, the specific steps are：
Step A41：By the vibration of vibrating screen, finished breaking product is sifted out；
Step A41：It is pre- that the ore left on the upper screen cloth of the vibrating screen and lower screen cloth sieve is subjected to dry type magnetic pulley
Choosing, first pre-selection, which is skimmed, is mixed into the country rock and gangue mineral of ore, and the country rock for being mixed into ore and gangue mineral are tailing；Clout
For feed fine crushing；The tailing is as the material for building road；
Step A43：The type fine disintegrating machine fine crushing that feeds is subjected to fine crushing, the ore after fine crushing is described in
Step A2In screening surge bunker in, formed closed cycle.
Step B：Mill selects technique, using stage grinding and stage grading, using flotation, low intensity magnetic separation, strong magnet-gravity technique,
Floatation process and weak magnetic separation process are directlyed adopt after primary grinding, select the higher troilite of yield respectively and weak magnetic roughing is thrown
The tailing for going more than half makes secondary grinding amount only account for the 1/3 of primary grinding amount, and compared with Continuous Grinding, energy conservation reduces material
Material consumption is obvious；In the present embodiment by finished breaking product that granularity is 12~0mm through it is overground select technique obtain comprehensive iron ore concentrate,
Iron concentrate, copper concentrate, total tailing.The specific steps are：
Step B1：Copper sulphur is mixed floating, after first emersion sulphur and copper, the optional iron of the tailing of flotation, its advantage is that influencing magnetite concentrate
The magnetic iron ore of quality can be selected by flotation, and the mine-supplying quantity of flotation is controllable, and the index of flotation operation is more stable, can effectively drop
Sulfur content in low magnetite concentrate.The specific steps are：
Step B11：The finished breaking product is subjected to primary grinding, is classified after ore grinding, selects one section of ore and one
Section classification sand setting；
Step B12：One section of classification sand setting returns to primary grinding, and repeats step B11, finally obtain one section of ore；
Step B13：One section of ore is fed into the mixed floating flotation device of copper sulphur, carries out mixed floating roughing, obtain mixed floating rough concentrate and
Mixed floating rougher tailings；The flotation device is to utilize mineral surfaces hydrophily in the case where solid-state, gaseous state and liquid three phase boundary
With hydrophobic difference, processing is sorted to ore, copper, sulfur mineral can be recycled；
Step B14：By the mixed floating rough concentrate carry out it is primary it is mixed float selected, select primary mixed floating concentrate and primary mixed floating tail
Mine；
Step B15：To once mix floating concentrate carry out it is secondary it is mixed float selected, select the mixed floating concentrate of copper sulphur and secondary mixed floating tailing；
Step B16：The mixed floating rougher tailings is carried out mixed float to scan, mixed floating scavenger concentrate is selected and mixed float scans tailing；
Step B17：By the primary mixed floating tailing selected, secondary mixed floating tailing and mixed floating scavenger concentrate return step B13, shape
At closed cycle.
Step B2：Shallow crust structures, carry out after the mixed floating concentrate regrinding of the copper sulphur copper, sulphur content from, finally obtain copper concentrate and
Iron concentrate, beneficiating efficiency are improved.The specific steps are：
Step B21：The mixed floating concentrate of the copper sulphur is subjected to three sections of ore grindings, obtains three sections of ores；
Step B22：Three sections of ores are fed into floating copper coarse classifier, floating copper roughing is carried out, obtains floating copper rough concentrate and floating copper
Rougher tailings；
Step B23：By the floating copper rough concentrate progress, once floating copper is selected, selects once floating copper concentrate and once floating copper tail
Mine；
Step B24：The secondary floating copper of the once floating copper concentrate progress is selected, select secondary floating copper concentrate and secondary floating copper
Tailing；
Step B25：By the secondary floating copper concentrate progress, floating copper is selected three times, selects final copper concentrate and floats copper three times
Tailing；
Step B26：Floating copper tailing by the secondary floating copper tailing and three times, to return to once floating copper selected, repeats step B23,
Form closed cycle；
Step B27：The floating copper rougher tailings is carried out once floating copper to scan, selects once floating copper scavenger concentrate and primary
Floating copper scans tailing；
Step B28：Floating copper coarse classifier, repetition are returned after the once floating copper scavenger concentrate and primary floating copper tailing are mixed
Step B22, form closed cycle；
Step B29：The once floating copper scanned into tailing carry out secondary floating copper and scan, select secondary floating copper scavenger concentrate and
Secondary floating copper scans tailing；The secondary floating copper scavenger concentrate is returned to once floating copper to scan, repeats step B27, form closed circuit follow
Ring；It is final iron concentrate that the secondary floating copper, which scans tailing,.
Step B3：Low intensity magnetic separation, mainly magnetic iron ore, martite, bloodstone, limonite, sulphur iron in diversification raw ore
Mine and it is difficult to the ferric carbonate recycled, ferrosilite, the present embodiment is mixed floating to scan tailing by low intensity magnetic separation operation after the mixed floating technique of copper sulphur
Strongly magnetic mineral is recycled, the available higher magnetite concentrate of grade, recycling ability is stronger, the specific steps are：
Step B31：By the step B16Obtained in mix it is floating scan tailing and feed weak magnetic separator carry out weak magnetic roughing, select
Weak magnetic rougher concentration and weak magnetic rougher tailings；
Step B32：The weak magnetic rougher concentration is subjected to secondary grinding classification, separates two sections of ores and two sections of classification sand settings；
Two sections of classification sand settings are returned into secondary grinding, repeat secondary grinding classification, it is final to obtain weak magnetic ore；It is mixed floating by copper sulphur
Secondary grinding amount only accounts for the 20%~40% of primary grinding amount after technique and weak magnetic roughing technique, greatly reduces workload and machine
Device load；
Step B33：Weak magnetic ore progress weak magnetic is selected, select inferior fine magnetite concentrate and weak magnetic cleaner tailings；
Step B4：High intensity magnetic separation can recycle above-mentioned bloodstone and limonite, so that the higher red iron ore concentrate of grade is obtained,
The specific steps are：
Step B41：De- slag is sieved by drum deslagging after the weak magnetic cleaner tailings and weak magnetic rougher tailings are mixed；
Step B42：Drum deslagging is sieved into the ore obtained after de- slag and feeds intensity magnetic separator progress high intensity magnetic separation, obtains strong magnetic essence
Mine and high intensity magnetic separation tailing；
Step B5：Gravity treatment, the specific steps are：The high intensity magnetic mineral is fed into spiral chute, weight is utilized by spiral chute
Power carries out ore dressing, obtains red iron ore concentrate and spiral chute tailing；The process of the gravity treatment is mechanical-physical process, is mainly utilized
The movement effect of the difference of valuable mineral and gangue mineral specific gravity, the Khenpo granularity of mineral, shape and medium type and medium
The difference of mode is sorted；
Step B6：It is mixed to get comprehensive iron ore concentrate, the specific steps are：
Step B61：The inferior fine magnetite concentrate and red iron ore concentrate are subjected to hybrid filtering, the filter cake obtained is final synthesis
Iron ore concentrate；
Step B62：The high intensity magnetic separation tailing and spiral chute tailing are merged, obtain total tailing, total tailing can pass through glue
Knot technology is used to backfill underground goaf, reduces soil erosion and surface subsidence.
The present embodiment is obtained a large amount of roads of building by dry type pre-selection and is used using first three section of one closed circuit crushing and screening technique
Auxiliary material effectively reduces subsequent mill and is elected to be industry treating capacity, realizes the target of " much broken and lessmill, energy-saving "；Technique is selected using mill,
Using stage grinding, stage grading technique, floatation process and weak magnetic separation process are directlyed adopt after primary grinding, select production respectively
The higher troilite of rate and weak magnetic roughing are skimmed more than half tailing, and secondary grinding amount is made only to account for the 1/3 of primary grinding amount, with
Continuous Grinding compares, and it is obvious to reduce material consumption for energy conservation.
Embodiment 2
As depicted in figs. 1 and 2, the present embodiment is substantially the same manner as Example 1, and further, the present embodiment is directed to Anhui
The river Ma Gangluo mine carries out ore dressing, and sieve river mine is mainly the diversification such as magnetic iron ore, martite, bloodstone, limonite, troilite
Ore and it is difficult to the ferric carbonate recycled, ferrosilite, included the following steps：
Step A：Crushing and screening first uses three section of one closed circuit crushing and screening mode, obtains finished breaking product, pass through
Dry type pre-separation using magnetic pulley, which can both obtain, largely builds road auxiliary material, can also effectively reduce subsequent mill and be elected to be industry treating capacity,
The grade of milling ore is improved, realizes the target of " much broken and lessmill, energy-saving "；In the present embodiment by ore grain size be 750~
The raw ore final sizing yield ores granularity of 0mm is the preliminary crushed product of 12~0mm, the specific steps are：
Step A1：Coarse crushing passes through coarse crushing in the present embodiment, ore grain size is made to reach 300~0mm, the coarse crushing
Machine is CJ613 type jaw crusher；
Step A2：In be crushed, pass through in the present embodiment in be crushed, so that ore grain size is reached 60~0mm, the middle crusher
For CH870EC type gyratory crusher；
Step A3：Check screening show that full Iron grade is 31.57%, on the finished breaking product and sieve of sulfur-bearing 6.95%
Return to mine；Using the vibrating screen of Double-layer screen when the check screening, the screen size of lower screen cloth is less than the sieve pore ruler of upper screen cloth
It is very little；The screen size of upper screen cloth is 40*60mm in the present embodiment, and the screen size of lower screen cloth is 10*40mm, sieves lower 12~0mm
The full Iron grade of granularity is 31.57%, the preliminary crushed product of sulfur-bearing 6.95%；
Step A4：Dry type pre-selection, obtains tailing, the specific steps are：
Step A41：By the vibration of vibrating screen, finished breaking product is sifted out；Preliminary crushed product size is in the present embodiment
12~0mm；
Step A42：The magnetic field that ore on the upper screen cloth of the vibrating screen and lower screen cloth sieve is installed by belt conveyer head
The magnetic pulley that intensity is 3000Gs carries out dry type magnetic separation, finally obtains feed and tailing fine crushing；The tailing is used as and builds road
Material；
Step A43：The type fine disintegrating machine fine crushing that feeds is subjected to fine crushing, passes through fine crushing in the present embodiment, makes mine
Stone grain degree reaches 20~0mm, and the type fine disintegrating machine is CH870EF type gyratory crusher；Ore after fine crushing returns to
The step A2In screening surge bunker in, formed closed cycle.
Step B：Mill selects technique, and using stage grinding, stage grading technique, floatation process is directlyed adopt after primary grinding
And weak magnetic separation process, it selects the higher troilite of yield respectively and weak magnetic roughing is skimmed more than half tailing, make secondary grinding
Amount only accounts for the 1/3 of primary grinding amount, and compared with Continuous Grinding, it is obvious to reduce material consumption for energy conservation；By granularity in the present embodiment
Pass through flotation, low intensity magnetic separation, strong magnet-gravity technique for the finished breaking product of 12~0mm, obtains comprehensive iron ore concentrate, iron concentrate, copper
Concentrate, total tailing.
Step B1：Copper sulphur is mixed floating, after first emersion sulphur and copper, the optional iron of the tailing of flotation, its advantage is that influencing magnetite concentrate
The magnetic iron ore of quality can be selected by flotation, and the mine-supplying quantity of flotation is controllable, and the index of flotation operation is more stable, can effectively drop
Sulfur content in low magnetite concentrate, the specific steps are：
Step B11：The finished breaking product is subjected to primary grinding, is classified after ore grinding, selects one section of ore and one
Section classification sand setting；Using 4.0 × 6.0 overflowball mill of Φ and the hydrocyclone of FX500-GT × 6 to preliminary in the present embodiment
Crushed product carries out primary grinding；
Step B12：One section of classification sand setting returns to primary grinding, and repeats step B11, it is final obtain overflow fineness be-
One section of ore that 200 mesh accountings are 55%；
Step B13：One section of ore is fed into the mixed floating flotation device of copper sulphur, carries out mixed floating roughing, obtain mixed floating rough concentrate and
Mixed floating rougher tailings；
Step B14：By the mixed floating rough concentrate carry out it is primary it is mixed float selected, select primary mixed floating concentrate and primary mixed floating tail
Mine；
Step B15：To once mix floating concentrate carry out it is secondary it is mixed float selected, select the mixed floating concentrate of copper sulphur and secondary mixed floating tailing；
Once mixed in the present embodiment float it is selected and it is secondary mix to float selected be all made of 16 inflating mechanical agitation type flotation machine of CLF-, the flotation
Machine dischargeable capacity is 16m3, production capacity is 2~6m3/ min, bulk coefficient 0.75~0.85；
Step B16：The mixed floating rougher tailings is carried out mixed float to scan, mixed floating scavenger concentrate is selected and mixed float scans tailing；
Floating roughing is mixed in the present embodiment and mixed float is scanned using the inflating mechanical agitation type flotation machine of model CLF -30, dischargeable capacity
For 30m3, production capacity is 3~15m3/ min, bulk coefficient 0.75~0.85；
Step B17：By the primary mixed floating tailing selected, secondary mixed floating tailing and mixed floating scavenger concentrate return step B13, shape
At closed cycle.
Step B2：Shallow crust structures, carry out after the mixed floating concentrate regrinding of the copper sulphur copper, sulphur content from, finally obtain copper concentrate and
Iron concentrate, beneficiating efficiency are improved.The specific steps are：
Step B21：The mixed floating concentrate of the copper sulphur is subjected to three sections of grind gradings, obtaining overflow fineness is that -200 mesh accountings are
90% three sections of ores；2.1 × 3.0 overflowball mill of Φ and the hydrocyclone pair of FX250-PU × 6 are used in the present embodiment
The mixed floating concentrate of copper sulphur carries out three sections of grind gradings；
Step B22：Three sections of ores are fed into floating copper coarse classifier, floating copper roughing is carried out, obtains floating copper rough concentrate and floating copper
Rougher tailings；Copper roughing is floated in the present embodiment uses 16 type flotation machine of KYF/XCF-, dischargeable capacity 16m3, production capacity
For 2~6m3/min；
Step B23：By the floating copper rough concentrate progress, once floating copper is selected, selects once floating copper concentrate and once floating copper tail
Mine；
Step B24：The secondary floating copper of the once floating copper concentrate progress is selected, select secondary floating copper concentrate and secondary floating copper
Tailing；
Step B25：By the secondary floating copper concentrate progress, floating copper is selected three times, selects final copper concentrate and floats copper three times
Tailing；It once floats that copper is selected, secondary floating copper is selected in the present embodiment and floats that copper is selected to be all made of 4 type flotation of KYF/XCF-three times
Machine, the flotation device dischargeable capacity are 4m3, production capacity is 0.4~2m3/ min, bulk coefficient 0.75~0.85；
Step B26：Floating copper tailing by the secondary floating copper tailing and three times, to return to once floating copper selected, repeats step B23,
Form closed cycle；
Step B27：The floating copper rougher tailings is carried out once floating copper to scan, selects once floating copper scavenger concentrate and primary
Floating copper scans tailing；
Step B28：Floating copper coarse classifier, repetition are returned after the once floating copper scavenger concentrate and primary floating copper tailing are mixed
Step B22, form closed cycle；
Step B29：The once floating copper scanned into tailing carry out secondary floating copper and scan, select secondary floating copper scavenger concentrate and
Secondary floating copper scans tailing；Copper is once floated in the present embodiment to scan to scan with secondary floating copper and be all made of 16 type flotation of KYF/XCF-
Machine, dischargeable capacity 16m3, production capacity is 2~6m3/min；The secondary floating copper scavenger concentrate is returned to once floating copper to sweep
Choosing repeats step B27, form closed cycle；It is final iron concentrate that the secondary floating copper, which scans tailing,.
Step B3：Low intensity magnetic separation, mainly magnetic iron ore, martite, bloodstone, limonite, sulphur iron in diversification raw ore
Mine and it is difficult to the ferric carbonate recycled, ferrosilite, the present embodiment is mixed floating to scan tailing by low intensity magnetic separation operation after the mixed floating technique of copper sulphur
Recycle strongly magnetic mineral, available full Iron grade 66.0%, sulfur-bearing 0.3%, the magnetite concentrate that yield is 29.09, recycling energy
Power is stronger, the specific steps are：
Step B31：By the step B16Obtained in mix it is floating scan tailing and feed weak magnetic separator carry out weak magnetic roughing, select
Weak magnetic rougher concentration and weak magnetic rougher tailings；Weak magnetic roughing uses CTB1230 type permanent-magnet drum type magnetic separator in the present embodiment, wherein
Weak magnetic roughing cylinder table magnetic induction intensity 163.93Ka/m, cylinder rotation rate 20rpm, 1~0mm of feeding granularity, feed ore concentration 27%, work
Make 45~75mm of gap；
Step B32：The weak magnetic rougher concentration is subjected to secondary grinding classification, separates two sections of ores and two sections of classification sand settings；
Two sections of classification sand settings are returned into secondary grinding, repeat secondary grinding classification, the final overflow fineness that obtains is -200 mesh accountings
For 75% weak magnetic ore；Secondary grinding amount only accounts for primary grinding amount after the mixed floating technique of copper sulphur and weak magnetic roughing technique
20%~40%, greatly reduce workload and machine burden；In the present embodiment using 3.2 × 4.5 overflowball mill of Φ and
The hydrocyclone of FX350-PU × 8 carries out secondary grinding, and secondary grinding amount accounts for the 30% of primary grinding amount；
Step B33：Weak magnetic ore progress weak magnetic is selected, select inferior fine magnetite concentrate and weak magnetic cleaner tailings；The present embodiment
Middle weak magnetic is selected to use CTB1230 type permanent-magnet drum type magnetic separator, the selected cylinder table magnetic induction intensity 135.28Ka/m of weak magnetic, cylinder turn
Fast 20rpm, 1~0mm of feeding granularity, feed ore concentration 30%, 45~75mm of working clearance；
Step B4：High intensity magnetic separation can recycle above-mentioned bloodstone and limonite, so that the higher red iron ore concentrate of grade is obtained,
The specific steps are：
Step B41：De- slag is sieved by drum deslagging after the weak magnetic cleaner tailings and weak magnetic rougher tailings are mixed；
Step B42：Drum deslagging is sieved into the ore obtained after de- slag and feeds intensity magnetic separator progress high intensity magnetic separation, obtains strong magnetic essence
Mine and high intensity magnetic separation tailing；High intensity magnetic separation uses 2500 type pulsating high gradient magnetic separator with vertical ring of SLon-, the magnetic separator in the present embodiment
It is the new and effective screening installation sorted using the comprehensive field of force such as magnetic force, Pulsating Flow physical strength and gravity, gives field strength 0.6T, excitation
Electric current 700A, feed preparation unit size < 1.2mm, feed ore concentration 30%, 100~150t/h of dry mine processing capacity.Its principle is a kind of benefit
The new and effective screening installation sorted with the comprehensive field of force such as magnetic force, Pulsating Flow physical strength and gravity；
Step B5：Gravity treatment, the specific steps are：The high intensity magnetic mineral is fed into spiral chute, weight is utilized by spiral chute
Power carries out ore dressing, obtains red iron ore concentrate and spiral chute tailing；Gravity treatment is carried out using 1500 spiral chute of Φ in the present embodiment, is given
Mine concentration 30%, 0.02~4mm of feed preparation unit size, dry mine processing capacity < 15t/h；The process of the gravity treatment is mechanical-physical mistake
Journey mainly utilizes difference, the Khenpo granularity of mineral, shape and medium type and the Jie of valuable mineral and gangue mineral specific gravity
The difference of the movement mode of action of matter is sorted；
Step B6：It is mixed to get comprehensive iron ore concentrate, the specific steps are：
Step B61：The inferior fine magnetite concentrate and red iron ore concentrate are subjected to hybrid filtering, the filter cake obtained is final synthesis
Iron ore concentrate；
Step B62：The high intensity magnetic separation tailing and spiral chute tailing are merged, obtain total tailing, total tailing can pass through glue
Knot technology is used to backfill underground goaf, reduces soil erosion and surface subsidence.
The present embodiment is obtained a large amount of roads of building by dry type pre-selection and is used using first three section of one closed circuit crushing and screening mode
Auxiliary material effectively reduces subsequent mill and is elected to be industry treating capacity, realizes the target of " much broken and lessmill, energy-saving "；Technique is selected using mill,
Using stage grinding, stage grading technique, floatation process and weak magnetic separation process are directlyed adopt after primary grinding, select yield compared with
High troilite and weak magnetic roughing is skimmed more than half tailing, and secondary grinding amount is made only to account for the 1/3 of primary grinding amount, and continuous
Ore grinding compares, and it is obvious to reduce material consumption for energy conservation.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (10)
1. a kind of beneficiation method for diversification raw ore, it is characterised in that include the following steps：
Step A：Crushing and screening first uses three section of one closed circuit crushing and screening mode, obtains finished breaking product；
Step B：Mill selects technique, is obtained using stage grinding and stage grading using flotation, low intensity magnetic separation, strong magnet-gravity technique
Comprehensive iron ore concentrate, iron concentrate, copper concentrate, total tailing.
2. a kind of beneficiation method for diversification raw ore according to claim 1, it is characterised in that；The step A's
The specific steps are：
Step A1：Coarse crushing, the raw ore of extraction is fed by batcher and carries out coarse crushing in primary mill, the ore after coarse crushing
Earth's surface ore storage bin is promoted to by main shaft hoisting system；
Step A2：In be crushed, by the ore that main shaft hoisting system is promoted feed middle crusher carry out in be crushed after obtain middle muck
Stone, broken ore is transported by belt feeder to screening surge bunker in this；
Step A3：Check screening obtains and returns to mine on finished breaking product and sieve；The check screening uses the vibration of Double-layer screen
Dynamic sieve, the screen size of lower screen cloth are less than the screen size of upper screen cloth；
Step A4：Dry type pre-selection, obtains tailing.
3. a kind of beneficiation method for diversification raw ore according to claim 2, it is characterised in that；The step A4Tool
Body step is：
Step A41：By the vibration of vibrating screen, finished breaking product is sifted out；
Step A42：The ore left on the upper screen cloth of the vibrating screen and lower screen cloth sieve is subjected to dry type pre-separation using magnetic pulley, it is first pre-
Choosing, which is skimmed, is mixed into the country rock and gangue mineral of ore, and the country rock for being mixed into ore and gangue mineral are tailing；Clout is fine crushing
Feed；
Step A43：The type fine disintegrating machine fine crushing that feeds is subjected to fine crushing, the ore after fine crushing returns to the step
A2In screening surge bunker in, formed closed cycle.
4. a kind of beneficiation method for diversification raw ore according to claim 1, it is characterised in that；The step B's
The specific steps are：
Step B1：Copper sulphur is mixed floating；
Step B2：Shallow crust structures；
Step B3：Low intensity magnetic separation；
Step B4：High intensity magnetic separation；
Step B5：Gravity treatment；
Step B6：It is mixed to get comprehensive iron ore concentrate.
5. a kind of beneficiation method for diversification raw ore according to claim 4, it is characterised in that：The step B1In
Copper sulphur it is mixed floating the specific steps are：
Step B11：The finished breaking product is subjected to primary grinding, is classified after ore grinding, selects one section of ore and one section point
Grade sand setting；
Step B12：One section of classification sand setting returns to primary grinding, and repeats step B11, finally obtain one section of ore；
Step B13：One section of ore is fed into the mixed floating flotation device of copper sulphur, carries out mixing floating roughing, mixed floating rough concentrate is obtained and mixes floating
Rougher tailings；
Step B14：By the mixed floating rough concentrate carry out it is primary it is mixed float selected, select primary mixed floating concentrate and primary mixed floating tailing；
Step B15：To once mix floating concentrate carry out it is secondary it is mixed float selected, select the mixed floating concentrate of copper sulphur and secondary mixed floating tailing；
Step B16：The mixed floating rougher tailings is carried out mixed float to scan, mixed floating scavenger concentrate is selected and mixed float scans tailing；
Step B17：By the primary mixed floating tailing selected, secondary mixed floating tailing and mixed floating scavenger concentrate return step B13, formed closed circuit
Circulation.
6. a kind of beneficiation method for diversification raw ore according to claim 4, it is characterised in that：The step B2In
Shallow crust structures the specific steps are：
Step B21：The mixed floating concentrate of the copper sulphur is subjected to three sections of ore grindings, obtains three sections of ores；
Step B22：Three sections of ores are fed into floating copper coarse classifier, floating copper roughing is carried out, obtains floating copper rough concentrate and floating copper roughing
Tailing；
Step B23：By the floating copper rough concentrate progress, once floating copper is selected, selects once floating copper concentrate and once floating copper tailing；
Step B24：The secondary floating copper of the once floating copper concentrate progress is selected, select secondary floating copper concentrate and secondary floating copper tailing；
Step B25：By the secondary floating copper concentrate progress, floating copper is selected three times, selects final copper concentrate and floats copper tailing three times；
Step B26：Floating copper tailing by the secondary floating copper tailing and three times, to return to once floating copper selected, repeats step B23, formation closes
Road circulation；
Step B27：The floating copper rougher tailings is carried out once floating copper to scan, selects once floating copper scavenger concentrate and once floating copper
Scan tailing；
Step B28：Floating copper coarse classifier, repetition step are returned after the once floating copper scavenger concentrate and primary floating copper tailing are mixed
B22, form closed cycle；
Step B29：It the once floating copper is scanned into tailing carries out secondary floating copper and scan, select secondary floating copper scavenger concentrate and secondary
Floating copper scans tailing；The secondary floating copper scavenger concentrate is returned to once floating copper to scan, repeats step B27, form closed cycle；
It is final iron concentrate that the secondary floating copper, which scans tailing,.
7. a kind of beneficiation method for diversification raw ore according to claim 4, it is characterised in that：The step B3In
Low intensity magnetic separation the specific steps are：
Step B31：By the step B16Obtained in mix it is floating scan tailing and feed weak magnetic separator carry out weak magnetic roughing, select weak magnetic
Rougher concentration and weak magnetic rougher tailings；
Step B32：The weak magnetic rougher concentration is subjected to secondary grinding classification, separates two sections of ores and two sections of classification sand settings；By institute
It states two sections of classification sand settings and returns to secondary grinding, repeat secondary grinding classification, it is final to obtain weak magnetic ore；
Step B33：Weak magnetic ore progress weak magnetic is selected, select inferior fine magnetite concentrate and weak magnetic cleaner tailings.
8. a kind of beneficiation method for diversification raw ore according to claim 4, it is characterised in that：The step B4In
High intensity magnetic separation the specific steps are：
Step B41：De- slag is sieved by drum deslagging after the weak magnetic cleaner tailings and weak magnetic rougher tailings are mixed；
Step B42：Drum deslagging sieved into the ore obtained after de- slag feed intensity magnetic separator and carry out high intensity magnetic separation, obtain high intensity magnetic mineral and
High intensity magnetic separation tailing.
9. a kind of beneficiation method for diversification raw ore according to claim 4, it is characterised in that：The step B5In
Gravity treatment the specific steps are：The high intensity magnetic mineral is fed into spiral chute, gravity treatment is carried out by spiral chute, obtains red iron ore concentrate
With spiral chute tailing.
10. a kind of beneficiation method for diversification raw ore according to claim 4, it is characterised in that：The step B6's
The specific steps are：
Step B61：The inferior fine magnetite concentrate and red iron ore concentrate are subjected to hybrid filtering, the filter cake obtained is final synthesis iron essence
Mine；
Step B62：The high intensity magnetic separation tailing and spiral chute tailing are merged, total tailing is obtained.
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| CN109692752A (en) * | 2019-01-08 | 2019-04-30 | 中冶北方（大连）工程技术有限公司 | It is a kind of to handle the ore-dressing technique that compound iron ore is selected containing a variety of iron mineral difficulties |
| CN109746118A (en) * | 2019-03-20 | 2019-05-14 | 中钢集团马鞍山矿山研究院有限公司 | A kind of method for separating of high-sulfate iron ore |
| CN110586332A (en) * | 2019-08-26 | 2019-12-20 | 铜陵有色金属集团股份有限公司 | Method for recovering sulfur and iron from polymetallic ore containing complex copper, sulfur and iron and containing easy-to-float silicate gangue |
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| WO2021037243A1 (en) * | 2019-08-29 | 2021-03-04 | 江西理工大学 | Pyrrhotite mineral processing method using low-alkali process of flotation followed by magnetic separation |
| CN110743697A (en) * | 2019-10-29 | 2020-02-04 | 广东五岭硅灰石有限公司 | Selection method for recovering needle-shaped wollastonite from mixed ore |
| CN110743697B (en) * | 2019-10-29 | 2022-04-29 | 广东五岭硅灰石有限公司 | Selection method for recovering needle-shaped wollastonite from mixed ore |
| 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 |
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