CN101700523A - Method for stockpiling tailings from beneficiated bauxite - Google Patents
Method for stockpiling tailings from beneficiated bauxite Download PDFInfo
- Publication number
- CN101700523A CN101700523A CN200910236342A CN200910236342A CN101700523A CN 101700523 A CN101700523 A CN 101700523A CN 200910236342 A CN200910236342 A CN 200910236342A CN 200910236342 A CN200910236342 A CN 200910236342A CN 101700523 A CN101700523 A CN 101700523A
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- CN
- China
- Prior art keywords
- bauxite
- tailings
- stockpiling
- beneficiated
- lotion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910001570 bauxite Inorganic materials 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000000694 effects Effects 0.000 claims abstract description 21
- 239000007787 solid Substances 0.000 claims abstract description 11
- 239000006210 lotion Substances 0.000 claims description 44
- 238000003756 stirring Methods 0.000 claims description 24
- 239000002002 slurry Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 208000034189 Sclerosis Diseases 0.000 claims description 11
- 238000009825 accumulation Methods 0.000 claims description 10
- 239000002956 ash Substances 0.000 claims description 10
- 239000004568 cement Substances 0.000 claims description 7
- 239000010881 fly ash Substances 0.000 claims description 7
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 5
- 239000003818 cinder Substances 0.000 claims description 5
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 229910052602 gypsum Inorganic materials 0.000 claims description 5
- 239000010440 gypsum Substances 0.000 claims description 5
- 239000004571 lime Substances 0.000 claims description 5
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 239000004575 stone Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000009776 industrial production Methods 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052755 nonmetal Inorganic materials 0.000 abstract description 2
- 239000012190 activator Substances 0.000 abstract 1
- 229940037003 alum Drugs 0.000 description 4
- 239000004927 clay Substances 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 238000005354 coacervation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910052900 illite Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 description 1
- 239000002674 ointment Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a method for stockpiling tailings from beneficiated bauxite, belonging to the method for stockpiling tailings from washed bauxite or beneficiated bauxite or the method for stockpiling tailings from beneficiated metal or beneficiated nonmetal. The method for stockpiling tailings from the beneficiated bauxite is characterized in that after the pulp of the tailings from the beneficiated bauxite is concentrated until the weight concentration of the solid reach 40-55 percent in the process of stockpiling the tailings from the beneficiated bauxite, base stock and gelatinous activator which have the pozzolanic activity or the latent hydraulicity are added to the pulp of the tailings from the beneficiated bauxite, then mixed with the same, and strongly stirred to the same to prepare the uniform paste with the weight concentration of the solid being 40-60 percent and the collapse degree being 20-28 cm, and the paste is transported to a stockpiling yard to be coagulated into a harden stockpiled body. The practice proves that the method for stockpiling tailings from the beneficiated bauxite is easy to realize the large-scale industrial production and has low operating cost.
Description
Technical field
A kind of stacked arrangement of bauxite relates to storing up of a kind of bauxite washup, milltailings, or the stacked arrangement of other metal milltailings or nonmetal ore-dressing mine tailing.
Technical background
Bauxite gangue is a kind of discarded object that produces in the aluminum oxide production process; because it contains clay minerals such as a large amount of kaolinites, illite, and granularity is superfine, so bauxite gangue sedimentation, compression performance are very poor; fixed very slow, can't form stable sclerosis and pile up.If adopt the conventional wet type mode of storing up of building a dam, cause not only that the tailings impoundment volume is big, maintenance cost is high, and have a strong impact on resident's environment, the personal safety and safety of property of mine tailing storehouse periphery.
At present, the stacked arrangement patent of a kind of bauxite of having announced (application number 200610109277.3), lotion prescription when bauxite gangue safety is stored up has been proposed, be that lotion is made up of bauxite slurries and base-material, gelling exciting agent with certain pozzolanic activity or latent hydraulicity, the base-material addition be dried mine tailing heavy 10%～50%, gelling exciting agent addition be dried mine tailing heavy 1%～10%.At lotion flow 10m
3In the commerical test of/h, adopt the lotion of this formulation, condensing has formed the sclerosis accumulation body with certain stocking angle and certain intensity, has obtained good bauxite gangue and has stored up effect.
(the lotion flow is greater than 100m but in large-scale engineeringization
3/ h) in the process, many practical challenges have but appearred, mainly show:
(1) the bauxite gangue concentration of slurry is lower.
Lotion does not allow to produce segregation phenomenon, otherwise can cause material in conveyance conduit, to deposit, stop up when carrying, when bauxite slurry weight concentration less than 40%, just can not prepare the saturability lotion of good stability, this is the basis that the bauxite gangue lotion is stored up.But existing bauxite gangue concentrator is mainly concentrator, because the bauxite gangue granularity is thinner, after concentrator concentrated, its weight concentration is the highest can only to reach 25%-30%, when not reaching the preparation lotion to the requirement of mine tailing concentration of slurry.
(2) the Paste Preparation stirring and mixing effect is not good.
The lotion mixing effect is that quality is stored up in decision and whether pipeline is carried crucial smoothly.Because bauxite gangue, base-material, gelling exciting agent granularity during lotion is formed are all thinner, as in the mine tailing-0.074mm accounts for 90%, in the base-material-0.074mm accounts for 57%, in the gelling exciting agent-and 0.074mm accounts for 90%, and when therefore several mixing of materials stirred, subparticle and water mutual effect produced coacervation in the compound, form agglomerate, cause mixing effect not good, Paste Preparation is inhomogeneous, has directly influenced the quality of lotion and the accumulation effect of condensing.
(3) continuity of ointment pumping is not strong.
Because the concentration of lotion is higher, viscosity is big, mobile poor, and has certain cementing properties, so it is long apart from when carry in the stockyard, delivery pump is easily stifled, duct pressure loss is big, operating cost is high, usually breaks down, and influences bauxite gangue and stores up effect.
These problems have had a strong impact on the industrialized implementation effect that bauxite gangue safety is stored up.
Summary of the invention
The objective of the invention is in order to overcome the deficiency that prior art exists, the bauxite gangue that provide a kind of large-scale industrial production to be easy to realize, operating cost is low is stored up technological process.
For realizing purpose of the present invention by the following technical solutions.
A kind of stacked arrangement of bauxite, it is characterized in that its process of storing up is after bauxite gangue slurry is concentrated into solid weight concentration and is 40%～55%, adding base-material, gelling exciting agent with pozzolanic activity or latent hydraulicity mixes, the powerful stirring prepares that solid weight concentration is 40%～60%, the even lotion of slump 20cm～28cm, adopt lotion to be delivered to the stockyard, the formation sclerosis accumulation body that condenses is stacked.
The stacked arrangement of a kind of bauxite of the present invention is characterized in that described bauxite gangue is starched concentration process is the two-stage concentration technology that adopts concentrator and the bauxite gangue slurries of dark awl high rate settling combination.
The stacked arrangement of a kind of bauxite of the present invention; it is characterized in that described base-material with pozzolanic activity or latent hydraulicity is any and/or several mixture of flyash, granulation blast furnace cinder, gangue, red mud, silicon ash, volcanic ash, float stone, addition be dried mine tailing heavy 10%～50%.
The stacked arrangement of a kind of bauxite of the present invention is characterized in that described gelling exciting agent is any and/or several mixture of cement, lime, gypsum, waterglass, addition be dried mine tailing heavy 1%～10%.
The stacked arrangement of a kind of bauxite of the present invention is characterized in that described powerful the stirring is to take the two-stage of twin shaft blade paddle mixer and the combination of double helix stirring conveyor to stir.
Method of the present invention, it is the basis of the qualified lotion of preparation that the bauxite gangue slurries are carried out effectively concentrating, the two-stage that the bauxite gangue slurries of low concentration are bored high rate settling through concentrator, deeply concentrates, and has guaranteed the concentration of bauxite gangue slurries.
Method of the present invention, bauxite high concentration mine tailing slurries mix with base-material, Binder Materials, adopt powerful stirring of two-stage of twin shaft blade paddle mixer and double helix stirring conveyor combination, have guaranteed to go into the quality of the preceding lotion of pump.It mainly is to strengthen to mix stirring action that the first order stirs, and the second level is stirred and made lotion reach abundant shearing, grind and mix, and prevents the part segregation of lotion.Under the powerful effect of stirring of two-stage, material particles and intergranular cohesive force are sharply reduced, impel material in lotion, to be evenly distributed, lotion becomes collosol state, the solid particle high velocity impact of while homogenising, accelerated the hydration reaction of gelling exciting agent, the intensity of gelling hardenite is improved.
It is the key that bauxite gangue is stored up enforcement that lotion is carried.Method of the present invention, paste transfer pump adopt high-lift delivery pump, solved lotion concentration height, viscosity big, mobile poor, be difficult to carry, problem such as pipeline easily blocks up etc., facts have proved that effect is good.
Because the bauxite gangue lotion needs certain setting time, could form stable sclerosis accumulation body, so method of the present invention, the lotion subregion is stacked, be about to the stockyard and be divided into several laydown areas, after a laydown area discharges a certain amount of lotion, lotion is drained into another laydown area, so circulation is discharged, and can guarantee that the lotion of each laydown area all has sclerosis preferably to pile up effect.
Large-scale industrial production of the present invention is easy to realize, operating cost is low.
The specific embodiment
A kind of stacked arrangement of bauxite, the concrete operations step comprises:
1. the bauxite gangue with weight concentration 3%～25% concentrates the high concentration alum clay ore deposit mine tailing slurries that obtain weight concentration 40%～55% through two-stage.
2. high concentration alum clay ore deposit mine tailing slurries are admitted to mixer, fully mix with the base-material with certain pozzolanic activity or latent hydraulicity, gelling exciting agent, through powerful stirring of two-stage of twin shaft blade paddle mixer and the combination of double helix stirring conveyor, prepare the even lotion of weight concentration 40%～60%, slump 20cm～28cm.
3. lotion is admitted to the lotion storage tank, by high-lift delivery pump lotion is pressed into pipeline and is transported to the stockyard.
4. lotion is stacked at the stockyard subregion, condenses to form the sclerosis accumulation body.
The two-stage of bauxite gangue slurries concentrates and adopts concentrator and dark combination of boring high rate settling.
Base-material with certain pozzolanic activity or latent hydraulicity is any and/or several mixture of flyash, granulation blast furnace cinder, gangue, red mud, silicon ash, volcanic ash, float stone, addition be dried mine tailing heavy 10%～50%.
The gelling exciting agent is any and/or several mixture of cement, lime, gypsum, waterglass, addition be dried mine tailing heavy 1%～10%
The delivery pump outlet pressure is greater than 5.0MPa, and the conveyance conduit distance is greater than 1000m.
Embodiment 1
After bauxite gangue slurry adopted the two-stage concentration technology of concentrator and the bauxite gangue slurries of dark awl high rate settling combination to be concentrated into solid weight concentration to be 40%, any and/or several mixture that adds base-material flyash with pozzolanic activity or latent hydraulicity, granulation blast furnace cinder, gangue, red mud, silicon ash, volcanic ash, float stone, addition be dried mine tailing heavy 10%; Any and/or several mixture of gelling exciting agent cement, lime, gypsum, waterglass mixes, addition be dried mine tailing heavy 1%, take the two-stage of twin shaft blade paddle mixer and double helix stirring conveyor combination to stir powerful the stirring and prepare that solid weight concentration is 40%0%, the even lotion of slump 20cmcm, adopt lotion to be delivered to the stockyard, the formation sclerosis accumulation body that condenses is stacked.
Embodiment 2
After bauxite gangue slurry adopted the two-stage concentration technology of concentrator and the bauxite gangue slurries of dark awl high rate settling combination to be concentrated into solid weight concentration to be 55%, any and/or several mixture that adds base-material flyash with pozzolanic activity or latent hydraulicity, granulation blast furnace cinder, gangue, red mud, silicon ash, volcanic ash, float stone, addition be dried mine tailing heavy 50%; Any and/or several mixture of gelling exciting agent cement, lime, gypsum, waterglass mixes, addition be dried mine tailing heavy 10%, the brute force of taking the two-stage of twin shaft blade paddle mixer and double helix stirring conveyor combination to stir stirs prepares that solid weight concentration is 60%, the even lotion of slump 28cm, adopt lotion to be delivered to the stockyard, the formation sclerosis accumulation body that condenses is stacked.
Embodiment 3
The bauxite gangue slurries of weight concentration 12% are concentrated into weight concentration 25% by concentrator, concentrate through dark awl high rate settling again, obtain the high concentration alum clay ore deposit mine tailing slurries of weight concentration 45%.High concentration alum clay ore deposit mine tailing slurries be admitted to the twin shaft blade paddle mixer from flyash, the cement of feed bin and carry out after one-level mixes, enter the double helix stirring conveyor again and carry out the powerful stirring of secondary, prepare the even lotion of weight concentration 51%, slump 23cm.The flyash addition be dried mine tailing heavy 35%, the cement addition be dried mine tailing heavy 2%.Lotion is admitted to the lotion storage tank, by all-hydraulic duplex piston pump lotion is pressed into pipeline and is transported to the stockyard.Lotion divides four districts to stack in the stockyard, condense to form the sclerosis accumulation body, 23 ° of the stocking angles of sclerosis accumulation body.
Claims (5)
1. the stacked arrangement of a bauxite, it is characterized in that its process of storing up is after bauxite gangue slurry is concentrated into solid weight concentration and is 40%～55%, adding base-material, gelling exciting agent with pozzolanic activity or latent hydraulicity mixes, the powerful stirring prepares that solid weight concentration is 40%～60%, the even lotion of slump 20cm～28cm, adopt lotion to be delivered to the stockyard, the formation sclerosis accumulation body that condenses is stacked.
2. the stacked arrangement of a kind of bauxite according to claim 1 is characterized in that described bauxite gangue is starched concentration process is the two-stage concentration technology that adopts concentrator and the bauxite gangue slurries of dark awl high rate settling combination.
3. the stacked arrangement of a kind of bauxite according to claim 1; it is characterized in that described base-material with pozzolanic activity or latent hydraulicity is any and/or several mixture of flyash, granulation blast furnace cinder, gangue, red mud, silicon ash, volcanic ash, float stone, addition be dried mine tailing heavy 10%～50%.
4. the stacked arrangement of a kind of bauxite according to claim 1 is characterized in that described gelling exciting agent is any and/or several mixture of cement, lime, gypsum, waterglass, addition be dried mine tailing heavy 1%～10%.
5. the stacked arrangement of a kind of bauxite according to claim 1 is characterized in that described powerful the stirring is to take the two-stage of twin shaft blade paddle mixer and the combination of double helix stirring conveyor to stir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910236342A CN101700523A (en) | 2009-10-16 | 2009-10-16 | Method for stockpiling tailings from beneficiated bauxite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910236342A CN101700523A (en) | 2009-10-16 | 2009-10-16 | Method for stockpiling tailings from beneficiated bauxite |
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| Publication Number | Publication Date |
|---|---|
| CN101700523A true CN101700523A (en) | 2010-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910236342A Pending CN101700523A (en) | 2009-10-16 | 2009-10-16 | Method for stockpiling tailings from beneficiated bauxite |
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| Country | Link |
|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912865A (en) * | 2010-08-02 | 2010-12-15 | 河海大学 | Method for solidifying and dry-stacking mill tailings without tailing reservoir |
| CN102432234A (en) * | 2011-08-30 | 2012-05-02 | 杨佳定 | comprehensive treatment method for mud nonferrous metal oxidized ore dressing tailing water residue |
| CN107344188A (en) * | 2017-07-28 | 2017-11-14 | 靖西天桂铝业有限公司 | Bauxite washing tail mud dry treatment and comprehensive utilization new technology |
-
2009
- 2009-10-16 CN CN200910236342A patent/CN101700523A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912865A (en) * | 2010-08-02 | 2010-12-15 | 河海大学 | Method for solidifying and dry-stacking mill tailings without tailing reservoir |
| CN101912865B (en) * | 2010-08-02 | 2012-11-07 | 河海大学 | Method for solidifying and dry-stacking mill tailings without tailing reservoir |
| CN102432234A (en) * | 2011-08-30 | 2012-05-02 | 杨佳定 | comprehensive treatment method for mud nonferrous metal oxidized ore dressing tailing water residue |
| CN102432234B (en) * | 2011-08-30 | 2013-09-25 | 杨佳定 | comprehensive treatment method for mud nonferrous metal oxidized ore dressing tailing water residue |
| CN107344188A (en) * | 2017-07-28 | 2017-11-14 | 靖西天桂铝业有限公司 | Bauxite washing tail mud dry treatment and comprehensive utilization new technology |
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Open date: 20100505 |