CN109809192A - A kind of tailings paste pipe-line transportation system and method - Google Patents

A kind of tailings paste pipe-line transportation system and method Download PDF

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Publication number
CN109809192A
CN109809192A CN201811506521.9A CN201811506521A CN109809192A CN 109809192 A CN109809192 A CN 109809192A CN 201811506521 A CN201811506521 A CN 201811506521A CN 109809192 A CN109809192 A CN 109809192A
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China
Prior art keywords
tailings
paste
tailings paste
additive
pipe
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Pending
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CN201811506521.9A
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Chinese (zh)
Inventor
孙文杰
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BGRIMM Technology Group Co Ltd
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BGRIMM Technology Group Co Ltd
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Priority to CN201811506521.9A priority Critical patent/CN109809192A/en
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Abstract

The invention discloses a kind of tailings paste pipe-line transportation system and method, which includes: mine tailing concentrator, stirring pool and Tailings transportation pipeline;Mine tailing concentrator carries out dense, formation tailings paste for storing low concentration Tailings Slurry and flocculant;Stirring pool is used for the additive for accommodating and stirring tailings paste and being quantitatively adding, and forms mixing tailings paste;The Tailings transportation pipeline is used to the mixing tailings paste being transported to Tailings Dam.The cohesiveness of lotion can be effectively reduced in the system, reduce the yield stress of lotion, enhance the easy pump and mobility of lotion, reduce the viscous resistance between lotion and conveyance conduit, pipe wear is reduced, silting and obstruction are prevented, improves the efficiency and job stability of lotion pipe-line transportation system, energy consumption is reduced, the operation management costs such as maintenance and the maintenance of lotion pipeline are reduced.

Description

A kind of tailings paste pipe-line transportation system and method
Technical field
The present invention relates to mill tailings processing technology field, is related to the pipe-line transportation system and method for a kind of tailings paste.
Background technique
China is mining powers, and Tailings Dam belongs to one of mine critical facility, the master generated for ore mining mineral resource Want waste, the tailing that China's metal mine accumulates on ground is being increased with monthly 200,000,000 tons of speed hundred million tons more than 140 Long, annual emissions are more than 1,500,000,000 tons, and the Tailings Dam of construction reaches more than 8000.
Currently, Tailings Disposal technology is mainly the discharge of earth's surface low concentration pipeline and underground filling.Tailings paste conveying Discharge is the new tailing treatment technology of one kind developed in recent years, and lotion draining technology can effectively reduce Tailings Dam land occupation face Product saves cost of building a dam, and improves tailings recycling water rate, saves water, highly beneficial to mine safety and environmental protection.
In Paste tailings, lotion concentration is 65%~75% or so, is in " toothpaste " shape between wet type and dry type.Cream Flow regime is plug flow to body in the duct, with certain yield stress (being greater than 200 ± 25Pa), is not isolated, not critical Flow velocity, the characteristic with non-newtonian fluid when pipeline pressure conveys.
Currently, low concentration flotation tailing pulp is defeated through pipeline from dressing plant in the preparation and conveying process flow of tailings paste It send to deep wimble thickener, high-efficiency thickener or oscillating mode lamella thickener and carries out dense, and the flocculant for adding doses adds Fast tailing flocculation, sedimentation.In general, underflow tailings paste concentration is up to 65~75% or so, Paste tailings pass through pump-pipeline extremely Tailings Dam carries out heap row.
There are many technical problems in tailings paste conveying, wherein discharge capacity deficiency, energy consumption height, pump and the pipeline of conventional pump Easily occur abrasion, blocking and breakoff phenomenon, transportation work stability is poor, it is running maintenance and maintenance operation cost compared with It is high.
Existing technical problem is conveyed to solve lotion, currently used measure mainly installs manganese steel additional on pump case and impeller Or the liner plate protection of the wear-resistant materials such as nickel-chromium steel, improve pipe material, using ceramic-lined or tube wall brushing wear-resistant paint etc..
It is noted that although the mill of pump can be reduced to a certain extent by installing the protection of wear-resistant material liner plate on pump case and impeller additional Damage, but when tailing media particle or flocculation group the largest particles are more than the safety particle diameter of pump, can still block And abrasion, and the maintenance and replacement operation of liner plate are more complex.
It improves pipe material, increase the measures such as wear-resistant liner or coating, although can effectively reduce between tailing and tube wall Frictional resistance, but effect is limited, and after transportation system long-play, different degrees of abrasion and clogging can still occur Occur, and overhauls, operation maintenance management higher cost complex with replacement operation.
Summary of the invention
(1) technical problems to be solved
The present invention is for solving high existing tailings paste conveying energy consumption, pipeline input stability difference and Tailings transportation fortune Problem at high cost is sought, while being also used to the generation for the phenomenon that avoiding pipe wear, blocking and destroying.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of pipe-line transportation system of tailings paste and methods.
According to an aspect of the invention, there is provided a kind of tailings paste pipe-line transportation system, comprising: mine tailing concentrator, Stirring pool and Tailings transportation pipeline;Mine tailing concentrator carries out dense, formation tailing for storing low concentration Tailings Slurry and flocculant Lotion;Stirring pool is used for the additive for accommodating and stirring tailings paste and being quantitatively adding, and forms mixing tailings paste;The tail Mine conveyance conduit is used to the mixing tailings paste being transported to Tailings Dam.
According to another aspect of the present invention, a kind of tailings paste applied pipeline transportation method is provided, comprising: storage low concentration tailing Slurry and flocculant carry out dense, formation tailings paste;Tailings paste and the additive being quantitatively adding are stirred, mixing is formed Tailings paste;The mixing tailings paste is transported to Tailings Dam.
(3) beneficial effect
Compared with prior art, the viscosity of lotion can be effectively reduced in the present invention, reduce the cohesiveness of lotion, reduce lotion Yield stress enhances the easy pump and mobility of lotion, reduces the viscous resistance between lotion and conveyance conduit, reduces pipeline mill Damage prevents silting and obstruction, improves the efficiency and job stability of lotion pipe-line transportation system, reduces energy consumption, reduces cream The operation management cost such as maintenance and maintenance of body pipeline.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of tailings paste pipe-line transportation system of the embodiment of the present invention;
Fig. 2 is that fluid of the lotion in conveyance conduit is special in a kind of tailings paste pipe-line transportation system of the embodiment of the present invention Property schematic diagram;
Fig. 3 is a kind of flow chart of tailings paste applied pipeline transportation method of the embodiment of the present invention.
It is as shown in the figure: Tailings Slurry 1, flocculant 2, mine tailing concentrator 3, tailings paste 4, stirring pool 5, additive charging gear 6, metering device 7, additive 8, blender 9, pump 10, Tailings transportation pipeline 11, Tailings Dam 12.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Following instance For illustrating the present invention, but it is not intended to limit the scope of the invention.
In one embodiment of the invention, a kind of efficient tailings paste pipe-line transportation system is provided, in tailing One or more additives or admixture are added in lotion, and uniform by agitating device high-speed stirred, dispersion destroys tailing cream The original flocculent structure of body in dispersion, bubble interval or sweeps along state.The additive includes dispersing agent, air entraining agent, water-reducing agent, profit The mixture of the one or more of them of lubrication prescription, retarder and pumping admixture.
Referring to Fig.1, a kind of tailings paste pipe-line transportation system according to an embodiment of the present invention is shown, which includes in figure Mine tailing concentrator 3, stirring pool 5 and Tailings transportation pipeline 11.Wherein, mine tailing concentrator is for storing low concentration Tailings Slurry 1 and wadding Solidifying agent 2 carries out dense, formation tailings paste 4;Stirring pool 5 is used for the additive for accommodating and stirring tailings paste and being quantitatively adding 8, form mixing tailings paste;The Tailings transportation pipeline 11 is used to the mixing tailings paste being transported to Tailings Dam.
In one embodiment, mine tailing concentrator upper opening is for receiving Tailings Slurry 1 and flocculant 2, mine tailing concentrator Lower openings face stirring pool.
In one embodiment, which is high-concentration tailings lotion.
In one embodiment, 5 top of stirring pool arrangement blender 9 and additive charging gear 6, wherein additive is given Material device is for providing quantitative additive 8 into stirring pool;Blender 9 is used for tailings paste and addition in stirring pool 5 Agent 8 carries out high speed rotation stirring, is sufficiently mixed, and carry out physical-chemical reaction, forms mixing tailings paste.
In one embodiment, metering device 7 is arranged in additive charging gear lower end, for controlling the feed of additive Amount;Wherein, according to the quantity of tailings paste 4, example controls the feeding coal of additive according to a certain mass ratio.
In one embodiment, the additive 8 is mixed to form by dispersing agent and air entraining agent.
In another embodiment, the additive 8 include dispersing agent, air entraining agent, water-reducing agent, lubricant, retarder and The mixture of the one or more of them of pumping admixture.
In one embodiment, arrangement pump 10 in Tailings transportation pipeline 11 will mix tailings paste by the pump 10 and be promoted Tailings transportation pipeline 11 is delivered into, Tailings Dam 12 is eventually delivered to.
Further, referring to Fig.1, in mine tailing concentrator 3, negatively charged organic flocculant 2 is used as group, captures and inhales The middle suspended particulate of the Tailings Slurry 1 of subsidiary positive charge, reduces its potential, and by gathering and acting on, the cotton-shaped bulky grain of the group of being formed makes it It is separated from water, and under the precipitating and filter pressing of mine tailing concentrator, aggregation and sedimentation form tailings paste 4.
In one embodiment, referring to Figures 1 and 2, tailings paste 4 and additive 8 are in stirring pool 5, in blender 9 Under high speed rotation effect, it is sufficiently mixed, and carry out a series of physical chemical reaction.Wherein, dispersing agent belongs to a kind of interfacial activity Agent is adsorbed on solid particles surface, by electrical charge rejection principle, prevents aggregation and cohesion between particle and particle, passes through sky Between steric effect, slide mutually, be layered and be staggered between the particle and particle of adsorption charge, and in the high shear of blender 9 Under power stirring action, can effectively evenly dispersed tailings paste 4 group's flocculent structure, reduce solid-liquid between interfacial tension, prevent tail Mine particle aggregation and precipitating, and keep the stabilization of tailings particles dispersion.
Further, air entraining agent introduces a large amount of equally distributed, closures and stable micro-bubble during mixing and stirring, uniformly The minute bubbles that are dispersed between tailings paste dispersion sweep along the minute bubbles around tailing dispersion that tail can be effectively reduced The cohesiveness of mine lotion reduces the yield stress of lotion, enhances the easy pump and mobility of lotion.
In addition, being formed as shown in Fig. 2, be dispersed in the minute bubbles between tailings paste 4 and the tube wall of Tailings transportation pipeline 11 One layer " air film ", space isolation can be played, the viscous resistance between lotion and conveyance conduit is reduced, reduces pipe wear.
Have in one embodiment in of the invention, as shown in figure 3, providing a kind of tailings paste applied pipeline transportation method, the party Method includes: that storage low concentration Tailings Slurry and flocculant carry out dense, formation tailings paste;Tailings paste is added with what is be quantitatively adding Add agent to be stirred, forms mixing tailings paste;The mixing tailings paste is transported to Tailings Dam.
In one embodiment, which is high-concentration tailings lotion.
In one embodiment, whipping step further comprises: tailings paste and additive are subjected to high speed rotation stirring, It is sufficiently mixed, and carries out physical-chemical reaction, form mixing tailings paste.
In one embodiment, tailings paste and the additive being quantitatively adding are stirred further include: according to tailing cream The quantity of body, example controls the feeding coal of additive according to a certain mass ratio.
In one embodiment, the additive is mixed to form by dispersing agent and air entraining agent.
In another embodiment, the additive includes dispersing agent, air entraining agent, water-reducing agent, lubricant, retarder and pump Send the mixture of the one or more of them of agent.
In one embodiment, tailings paste promotion will be mixed by the pump and delivers into Tailings transportation pipeline, it is final defeated It send to Tailings Dam.
Further, during tailing is dense, negatively charged organic flocculant is captured and is adsorbed and is positively charged as group The middle suspended particulate of the Tailings Slurry of lotus, reduces its potential, and by gathering and acting on, the cotton-shaped bulky grain of the group of being formed is separated from water it, And under the precipitating and filter pressing of mine tailing concentrator, aggregation and sedimentation form tailings paste.
In one embodiment, tailings paste and additive are sufficiently mixed, go forward side by side under the high speed rotation effect of blender The chemical reaction of row a series of physical.Wherein, dispersing agent belongs to a kind of interfacial agent, is adsorbed on solid particles surface, passes through electricity Lotus exclusion principle prevents aggregation and cohesion between particle and particle, by space steric effect, the particle of adsorption charge with It slides mutually, be layered and be staggered between particle, and under the high shear force stirring action of blender, it can effective evenly dispersed tailing Group's flocculent structure of lotion reduces the interfacial tension between solid-liquid, prevents tailings particles from agglomerating and precipitating, and keeps tailings particles The stabilization of dispersion.
Further, air entraining agent introduces a large amount of equally distributed, closures and stable micro-bubble during mixing and stirring, uniformly The minute bubbles that are dispersed between tailings paste dispersion sweep along the minute bubbles around tailing dispersion that tail can be effectively reduced The cohesiveness of mine lotion reduces the yield stress of lotion, enhances the easy pump and mobility of lotion.
In addition, being dispersed in the minute bubbles between tailings paste and the tube wall of Tailings transportation pipeline, one layer " air film ", energy are formed Space isolation is played, the viscous resistance between lotion and conveyance conduit is reduced, reduces pipe wear.
Apparatus embodiments described above are merely indicative, wherein unit can be as illustrated by the separation member Or it may not be and be physically separated, it can it is in one place, or may be distributed on multiple units.It can be with Some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment according to the actual needs.The common skill in this field Art personnel are without paying creative labor, it can understand and implement.
Finally, the present processes are only preferable embodiment, it is not intended to limit the scope of the present invention.It is all Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention Within the scope of.

Claims (10)

1. a kind of tailings paste pipe-line transportation system characterized by comprising mine tailing concentrator, stirring pool and Tailings transportation pipe Road;Mine tailing concentrator carries out dense, formation tailings paste for storing low concentration Tailings Slurry and flocculant;Stirring pool is for accommodating And the additive for stirring tailings paste and being quantitatively adding forms mixing tailings paste;The Tailings transportation pipeline is used for should Mixing tailings paste is transported to Tailings Dam.
2. tailings paste pipe-line transportation system according to claim 1, which is characterized in that open on the mine tailing concentrator top Mouth is for receiving Tailings Slurry and flocculant, the mine tailing concentrator lower openings face stirring pool.
3. tailings paste pipe-line transportation system according to claim 1, which is characterized in that the stirring pool top arrangement is stirred Mix machine and additive charging gear;The additive charging gear is described to stir for providing quantitative additive into stirring pool Machine is mixed for tailings paste and additive to be carried out high speed rotation stirring in stirring pool, forms the mixing tailings paste.
4. tailings paste pipe-line transportation system according to claim 3, which is characterized in that under the additive charging gear End arrangement metering device, the metering device are used to control the feeding coal of additive according to the quality of tailings paste.
5. tailings paste pipe-line transportation system according to claim 1, which is characterized in that the additive includes dispersion Agent, air entraining agent, water-reducing agent, lubricant, retarder and pumping admixture one or more of them mixture.
6. tailings paste pipe-line transportation system according to claim 1, which is characterized in that the mine tailing concentrator is used for will Negatively charged organic flocculant captures and adsorbs the middle suspended particulate of positively charged Tailings Slurry as group, reduces its electricity Gesture simultaneously passes through poly- and acts on, the cotton-shaped bulky grain of the group of being formed, and then is separated from water it, and aggregation and sedimentation form tailings paste.
7. tailings paste pipe-line transportation system according to claim 3, which is characterized in that the blender in height for cutting Group's flocculent structure of evenly dispersed tailings paste under shear force stirring action keeps the stabilization of tailings particles dispersion.
8. a kind of tailings paste applied pipeline transportation method, comprising:
It stores low concentration Tailings Slurry and flocculant carries out dense, formation tailings paste;
Tailings paste and the additive being quantitatively adding are stirred, mixing tailings paste is formed;
The mixing tailings paste is transported to Tailings Dam.
9. according to the method described in claim 8, wherein, the whipping step further comprises:
Tailings paste and additive are subjected to high speed rotation stirring, are sufficiently mixed, and carry out physical-chemical reaction, mixing tail is formed Mine lotion.
10. according to the method described in claim 8, wherein, tailings paste and the additive being quantitatively adding being stirred and also being wrapped Include: according to the quantity of tailings paste, example controls the feeding coal of additive according to a certain mass ratio;The additive includes dispersion Agent, air entraining agent, water-reducing agent, lubricant, retarder and pumping admixture one or more of them mixture.
CN201811506521.9A 2018-12-10 2018-12-10 A kind of tailings paste pipe-line transportation system and method Pending CN109809192A (en)

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Application publication date: 20190528