CN108672103A - A kind of bauxite decanter type floatation equipment and method for separating - Google Patents
A kind of bauxite decanter type floatation equipment and method for separating Download PDFInfo
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- CN108672103A CN108672103A CN201810687799.4A CN201810687799A CN108672103A CN 108672103 A CN108672103 A CN 108672103A CN 201810687799 A CN201810687799 A CN 201810687799A CN 108672103 A CN108672103 A CN 108672103A
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- Prior art keywords
- pipe
- bauxite
- mineralising
- groove body
- mineralization
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Classifications
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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
- B03D1/02—Froth-flotation processes
-
- 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
- B03D1/14—Flotation machines
- B03D1/1443—Feed or discharge mechanisms for flotation tanks
-
- 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
Abstract
The invention discloses a kind of bauxite decanter type floatation equipments, including pulp distributer, mineralizer, mineralising nozzle, mineralising pipe, groove body, inner cone, Outer Taper, foam tank, foam outlet pipe, underflow pipe, middle pipe, air inlet pipe；The mineralizer, mineralising nozzle, mineralising pipe are connected the re-mineralization systems of component devices；The groove body, inner cone are connected the flotation-separation systems of component devices；The settling separation system of the inner cone and Outer Taper component devices；The foam discharge system of the groove body, foam tank component devices.The present invention changes flotation cell without transmission re-mineralization system arrangement, and the flat annular arrangement for foring re-mineralization system is arranged with facade step；By the design of sedimenting system, sedimenting system is introduced into bauxite flotation process, improves coarse grain mineral floating probability.
Description
Technical field
The present invention relates to a kind of apparatus and method fors of bauxite flotation separation, more particularly to one kind being based on bauxite settleability
Matter is different and the apparatus and method for of FLOTATION SEPARATION.
Background technology
Ore beneficiation-Bayer Process production alumina technology technology is currently rationally to utilize low-grade bauxite important technology route.
By method for floating, the valuable mineral needed for alumina producing is enriched with, improves the grade of ore into alumina producing.
Bauxite floating method be it is different from gangue mineral interfacial property according to valuable mineral and realize detach.In bauxite flotation process
In, under pharmacy effect, dissociates preferable diaspore and be adhered to bubble surface because hydrophobicity is preferable, and with bubble
It rises floating to froth bed, is discharged as concentrate；The poor gangue mineral of hydrophobicity cannot then be captured by bubble, be discharged from underflow.
Chinese bauxite is largely diaspore type bauxite, and main valuable mineral is diaspore, main arteries and veins
Stone ore object is illite, kaolinite.Since diaspore hardness is big compared with gangue mineral hardness, in bauxite Milling product,
Valuable mineral content is higher in coarse fraction material, and gangue mineral content is high in fine particle stage material.Coarse fraction material is in floatation process
Middle sedimentation is very fast, causes product from failing grade high, the valuable mineral rate of recovery is low.
Demand growth with human society to metal, the grade of ore reduce rapidly, in order to obtain valuable mineral, enter ore dressing
Stone treating capacity increasingly increases, and the research and development of large-scale floatation equipment have become international trend.Floatation equipment enlargement is conducive to certainly
The setting of dynamicization instrument reduces floatation equipment floor space.With the development of floatation equipment enlargement, floatation equipment unit volume
Energy consumption reduces, and maintaining cost reduction, cost of labor is also greatly lowered.However, as floatation equipment enlargement develops, float
Select process there is also some problems, be mainly shown as causes coarse grain to be difficult to float because cylinder is higher, and coarse grain mineral recovery rate reduces,
The problems such as space is difficult to make full use of in flotation cell body.
Invention content
In order to overcome the deficiencies in the prior art, a kind of bauxite decanter type screening installation of present invention offer and sorting
The features such as method, this method utilizes bauxite valuable mineral coarse size, sedimentation is fast, in floatation process, sedimentation method is carried out
It introduces.
Technical solution：To achieve the above object, the technical solution adopted by the present invention is：
A kind of bauxite decanter type floatation equipment, including pulp distributer, mineralizer, mineralising nozzle, mineralising pipe, groove body, inner cone
Body, Outer Taper, foam tank, foam outlet pipe, underflow pipe, middle pipe, air inlet pipe；The mineralizer, mineralising nozzle, mineralising pipe phase
Connect the re-mineralization system of component devices；The groove body, inner cone are connected the flotation-separation systems of component devices；The inner cone
With the settling separation system of Outer Taper component devices；The foam discharge system of the groove body, foam tank component devices.
Wherein, the re-mineralization system is connected with pulp distributer, and re-mineralization system is in more from inside to outside in groove body plane
Annular configuration；Re-mineralization system is arranged in groove body facade in 3 grades of steps.
Wherein, the re-mineralization system is 1 at groove body center, and outer layer is 6 ~ 12 annular configurations.
Wherein, the mineralising nozzle injection direction sprays upwards, is 15 ° ~ 45 ° with horizontal sextant angle.
Wherein, the settling separation system of the inner cone and Outer Taper component devices, middle pipe are located at Outer Taper bottom, bottom
Flow tube is located at Outer Taper middle and upper part；
Wherein, the inner cone bottom is provided with through-hole.
A kind of method for separating of bauxite decanter type floatation equipment, includes the following steps realization：
A. the ore pulp fed through Pulp pump feeds pulp distributer with feeding pressure 0.25Mpa ~ 0.45Mpa, and high pressure ore pulp is in mine
Change device, mineralising pipe, mineralising nozzle to be sufficiently mixed with the compressed air entered through air inlet pipe, air is cut into bubble.
B. the ore pulp containing bubble, water and bauxite is injected into flotation-separation system with upward spray regime.
C. for mineral grain in flotation-separation system, the preferable mineral of hydrophobicity ascend into foam discharge system with bubble
System is discharged through foam outlet pipe.
D. the weaker ore pulp of hydrophobicity enters settling separation system by inner cone lower through-hole, is carried out in settling separation system
Sedimentation, pipe returns to material pump during the preferable coarse grain ore pulp of settling property passes through, and again returns to re-mineralization system, settling property is weaker
Fine mineral is discharged as tailing through underflow pipe.
Compared with prior art, the invention has the advantages that：
1. the good bauxite slurry of mineralising is uniformly injected into after pulp distributer distributes inside flotation cell body, in flotation cell body
Space is fully utilized.
2. the step of re-mineralization system is arranged, the secondary enrichment probability of ore pulp is improved, flotation recovery rate is improved.
3. flotation pulp carries out the separation of tailing, chats with subsidence style, coarse grain mineral are under the effect of gravity, preferential heavy
Drop, and it is again introduced into re-mineralization system mineralising again, the flotation probability of coarse grain high grade ore is improved, bauxite flotation tail is reduced
Mine grade.
The present invention changes flotation cell without transmission re-mineralization system arrangement, forms the flat annular arrangement of re-mineralization system and stands
Face step arrangement；Ore pulp injection direction in groove body is changed, the floating of coarse grain particle is conducive to；Pass through setting for sedimenting system
Sedimenting system is introduced bauxite flotation process, improves coarse grain mineral floating probability by meter.The present invention provides for ore concentration of bauxite
A kind of large-scale floatation equipment and method stable, treating capacity is big, selectivity is good, tailings grade is low.
Description of the drawings
Fig. 1 is the bauxite decanter type floatation equipment structural schematic diagram of invention；
Fig. 2 is bauxite decanter type floatation equipment vertical view.
Specific implementation mode
The present invention is further described below in conjunction with the accompanying drawings.
A kind of bauxite decanter type floatation equipment as shown in Figure 1, including pulp distributer 1, mineralizer 2, mineralising nozzle 3,
Mineralising pipe 4, groove body 5, inner cone 6, Outer Taper 7, foam tank 8, foam outlet pipe 9, underflow pipe 10, middle pipe 11, air inlet pipe 12；
The mineralizer 2, mineralising nozzle 3, mineralising pipe 4 are connected the re-mineralization systems of component devices；The groove body 5, inner cone 6 are connected
The flotation-separation system of component devices；The settling separation system of the inner cone 6 and 7 component devices of Outer Taper；The groove body 5,
The foam discharge system of 8 component devices of foam tank；The underflow pipe（10）Positioned at Outer Taper（7）Middle and upper part, middle pipe（11）Position
In Outer Taper（7）Bottom.
According to Fig. 1, re-mineralization system arrangement being specifically described, re-mineralization system is connected with pulp distributer 1, and
Re-mineralization system is annularly distributed from inside to outside in 3 horizontal layout of groove body, and three layers are divided into figure, and center is one, and the intermediate six roots of sensation is in
Annular distribution, the distribution annular in shape of outermost layer 12；Re-mineralization system is in 5 facade of groove body in 3 grades of steps arrangements, intermediate mineralising nozzle 3
Position is minimum, and intermediate 3 position of mineralising nozzle is in centre, 3 position highest of outer layer mineralising nozzle.Mineralising nozzle injection direction is upward
Injection is 15 ° with horizontal sextant angle.
According to Fig. 1, sedimenting system is specifically described, the sedimenting system that inner cone 6 is formed with Outer Taper 7, bottom
Flow tube is connected to sedimenting system middle and upper part and bottom with middle pipe.
A kind of method for separating of bauxite decanter type floatation equipment, implementation method are as follows：
Ore pulp feeds pulp distributer 1 through Pulp pump with feeding pressure 0.25Mpa ~ 0.45Mpa first, and high pressure ore pulp is in mineralizer
2, mineralising pipe 4, mineralising nozzle 3 are sufficiently mixed with the compressed air entered through air inlet pipe 12, and air is cut into bubble；Contain gas
The ore pulp of bubble, water and bauxite is injected into flotation-separation system with upward spray regime；Mineral grain is in flotation-separation system
In, the preferable mineral of hydrophobicity ascend into foam discharge system with bubble, are discharged through foam outlet pipe 9；Hydrophobicity is weaker
Ore pulp is settled in settling separation system, and pipe 11 returns to feed pump in the preferable coarse grain ore pulp warp of settling property, returns again
Re-mineralization system mineralising is returned, the weaker fine mineral of settling property as tailing through underflow pipe 10 through being discharged.With reference to specific
Using example, further the present invention will be described：
Using Henan low-grade bauxite as industrial production raw material, chemical full elemental analysis the results are shown in Table 1.
1 Henan low-grade bauxite chemistry full elemental analysis result of table（%）
| Chemical constituent | Al2O3 | SiO2 | Fe2O3 | TiO2 | K2O | Na2O | CaO | MgO | Igloss |
| Content | 56.43 | 15.32 | 8.16 | 2.94 | 1.36 | 0.041 | 0.12 | 0.32 | 14.55 |
In the low-grade bauxite ore dressing process of Henan, lower mine amount be 60t/h, raw ore after one section of ball mill closed circuit grinding,
Hydrocyclone overflow fineness is that -0.075mm accounts for 89.86%, and a concentration of 29.35% ore pulp is in raw ore slurry agitator and flotation medicine
It is directly entered φ 6m decanter type floatation equipments after agent effect and carries out flotation desilication.The preferable mineral of hydrophobicity are in flotation-separation system
It is middle to be discharged through foam outlet pipe as concentrate；The weaker ore pulp of hydrophobicity is settled in settling separation system, and settling property is preferable
Coarse grain ore pulp through being recycled as chats, the weaker fine mineral of settling property as tailing through underflow pipe through being discharged.
Embodiment 1：
Ore pulp feeds decanter type floatation equipment through Pulp pump with feeding pressure 0.25Mpa, and the equipment re-mineralization system is in groove body by interior
It is divided into three layers of distribution annular in shape outward, center is 1,6 intermediate, outermost layer 12；Mineralising nozzle with horizontal sextant angle be 15 °
It sprays upwards in direction.By the ore pulp of the decanter type floatation equipment, by one roughing, primary cleaning, once purging selection flotation work
Skill flow obtains index such as the following table 2：
2 embodiment of table, 1 ore dressing and desiliconizing result（%）
| Sample ID | Al2O3 | SiO2 | A/S | Yield | Alumina recovery rate |
| Raw ore | 56.35 | 15.42 | 3.65 | 100.00 | 100.00 |
| Concentrate | 64.58 | 8.62 | 7.49 | 70.00 | 80.22 |
| Tailing | 37.15 | 31.28 | 1.19 | 30.00 | 19.78 |
As shown in Table 2, embodiment 1 is under the premise of concentrate grade meets alumina producing Bayer process ingredient requirement, concentrate yield
It is 70%, alumina recovery rate is 80.22%, and granularity of concentrate is that -0.075mm accounts for 84.62%, compared with mill head, coarse grain mineral
Flotation probability be obviously improved.
Embodiment 2：
Ore pulp feeds decanter type floatation equipment through Pulp pump with feeding pressure 0.35Mpa, and the equipment re-mineralization system is in groove body by interior
It is divided into three layers of distribution annular in shape outward, center is 1,7 intermediate, outermost layer 11；Mineralising nozzle with horizontal sextant angle be 30 °
It sprays upwards in direction.By the ore pulp of the decanter type floatation equipment, by one roughing, primary cleaning, once purging selection flotation work
Skill flow obtains index such as the following table 3：
3 embodiment of table, 2 ore dressing and desiliconizing result（%）
| Sample ID | Al2O3 | SiO2 | A/S | Yield | Alumina recovery rate |
| Raw ore | 56.69 | 15.16 | 3.74 | 100.00 | 100.00 |
| Concentrate | 64.96 | 8.52 | 7.63 | 70.29 | 80.55 |
| Tailing | 37.12 | 30.88 | 1.20 | 29.71 | 19.45 |
As shown in Table 3, embodiment 2 is under the premise of concentrate grade meets alumina producing Bayer process ingredient requirement, concentrate yield
It is 70.29%, alumina recovery rate is 80.55%, and granularity of concentrate is that -0.075mm accounts for 83.98%.
Embodiment 3：
Ore pulp feeds decanter type floatation equipment through Pulp pump with feeding pressure 0.45Mpa, and the equipment re-mineralization system is in groove body by interior
It is divided into three layers of distribution annular in shape outward, center is 1,8 intermediate, outermost layer 10；Mineralising nozzle with horizontal sextant angle be 45 °
It sprays upwards in direction.By the ore pulp of the decanter type floatation equipment, by one roughing, primary cleaning, once purging selection flotation work
Skill flow obtains index such as the following table 4：
4 embodiment of table, 3 ore dressing and desiliconizing result（%）
| Sample ID | Al2O3 | SiO2 | A/S | Yield | Alumina recovery rate |
| Raw ore | 56.45 | 15.34 | 3.68 | 100.00 | 100.00 |
| Concentrate | 64.72 | 8.37 | 7.73 | 70.11 | 80.38 |
| Tailing | 37.05 | 31.68 | 1.17 | 29.89 | 19.62 |
As shown in Table 4, embodiment 3 is under the premise of concentrate grade meets alumina producing Bayer process ingredient requirement, concentrate yield
It is 70.11%, alumina recovery rate is 80.38%, and granularity of concentrate is that -0.075mm accounts for 84.35%.
Above-described is only presently preferred embodiments of the present invention, not limitation invention.It should be understood that for the general of this field
For logical technical staff, under technical inspiration provided by the present invention, other equivalent improvement can also be made, this may be implemented
The purpose of invention, is regarded as protection scope of the present invention.
Claims (7)
1. a kind of bauxite decanter type floatation equipment, it is characterised in that：Including pulp distributer（1）, mineralizer（2）, mineralising spray
Head（3）, mineralising pipe（4）, groove body（5）, inner cone（6）, Outer Taper（7）, foam tank（8）, foam outlet pipe（9）, underflow pipe
（10）, middle pipe（11）, air inlet pipe（12）；The mineralizer（2）, mineralising nozzle（3）, mineralising pipe（4）Be connected component devices
Re-mineralization system；The groove body（5）, inner cone（6）Be connected the flotation-separation systems of component devices；The inner cone（6）With
Outer Taper（7）The settling separation system of component devices；The groove body（5）, foam tank（8）The foam discharge system of component devices；
The underflow pipe（10）With middle pipe（11）It is located at the Outer Taper（7）Middle and upper part and bottom.
2. a kind of bauxite decanter type floatation equipment according to claim 1, it is characterised in that：The re-mineralization system and ore pulp
Distributor（1）It is connected, and re-mineralization system is in groove body（5）Plane is in that polycyclic is arranged from inside to outside；Re-mineralization system is in groove body（5）
Facade is arranged in 3 grades of steps.
3. a kind of bauxite decanter type floatation equipment according to claim 1, it is characterised in that：The re-mineralization system is in groove body
（5）Center is 1, and outer layer is 6 ~ 12 annular configurations.
4. a kind of bauxite decanter type floatation equipment according to claim 1, it is characterised in that：Mineralising nozzle injection side
It it is 15 ° ~ 45 ° with horizontal sextant angle to spray obliquely.
5. a kind of bauxite decanter type floatation equipment according to claim 1, it is characterised in that：The inner cone（6）With it is outer
Cone（7）The settling separation system of component devices, middle pipe（11）For Outer Taper bottom, underflow pipe（10）Positioned at Outer Taper（7）
Middle and upper part.
6. a kind of bauxite decanter type floatation equipment according to claim 1, it is characterised in that：The inner cone（7）Bottom
It is provided with through-hole.
7. a kind of method for separating using the bauxite decanter type floatation equipment described in any one of claim 1-6, feature
It is：Include the following steps：
A. the ore pulp fed through Pulp pump feeds pulp distributer with feeding pressure 0.25Mpa ~ 0.45Mpa（1）, high pressure ore pulp exists
Mineralizer（2）, mineralising pipe（4）, mineralising nozzle（3）With through air inlet pipe（12）The compressed air of entrance is sufficiently mixed, and air is cut
It is segmented into bubble；
B. the ore pulp containing bubble, water and bauxite is injected into flotation-separation system with spray regime obliquely；
C. for mineral grain in flotation-separation system, the preferable mineral grain of hydrophobicity ascends into foam discharge system with bubble
System, through foam outlet pipe（9）Discharge；
D. the weaker mineral grain of hydrophobicity is settled in settling separation system, and the preferable coarse grain ore pulp of settling property is through chats
Pipe（11）Return to feed pump, again return to re-mineralization system, the weaker fine mineral of settling property through as tailing through debris tube
（10）Discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810687799.4A CN108672103B (en) | 2018-06-28 | 2018-06-28 | Bauxite settling type flotation equipment and sorting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810687799.4A CN108672103B (en) | 2018-06-28 | 2018-06-28 | Bauxite settling type flotation equipment and sorting method |
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| CN108672103A true CN108672103A (en) | 2018-10-19 |
| CN108672103B CN108672103B (en) | 2020-05-19 |
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| CN201810687799.4A Active CN108672103B (en) | 2018-06-28 | 2018-06-28 | Bauxite settling type flotation equipment and sorting method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110465413A (en) * | 2019-09-28 | 2019-11-19 | 郑州广益达资源新技术有限公司 | Promote the flotation unit and method for floating of coarse granule lean intergrowth floating |
| CN112916214A (en) * | 2020-12-25 | 2021-06-08 | 郴州天朗金石矿山设备有限公司 | Universal mineral processing equipment device and method for refitting non-ferrous metal ore and non-metallic ore |
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| CN108672103B (en) | 2020-05-19 |
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