CN104929683B - Total-tailings paste filling and stockpiling combined treatment method based on deep-cone thickener - Google Patents
Total-tailings paste filling and stockpiling combined treatment method based on deep-cone thickener Download PDFInfo
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- CN104929683B CN104929683B CN201510334903.8A CN201510334903A CN104929683B CN 104929683 B CN104929683 B CN 104929683B CN 201510334903 A CN201510334903 A CN 201510334903A CN 104929683 B CN104929683 B CN 104929683B
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Abstract
The invention relates to a total-tailings paste filling and stockpiling combined treatment method based on a deep-cone thickener. A combined treatment system is composed of a one-stage or multi-stage pump station, the deep-cone thickener and a two-segment horizontal stirring device. The deep-cone thickener is arranged near the multi-stage pump station. A continuous feeding and discharging mode is adopted for achieving the continuous concentration process, and the two functions of filling and tailings stockpiling are both taken into consideration. In the running process of a filling system, total tailings of a concentration plant are completely thrown into the deep-cone thickener through the one-stage or multi-stage pump station. When filling is needed, deep-cone bottom flow is pumped to the two-segment stirrer through a mortar pump and is mixed with cement, and qualified paste is prepared and flows to or is pumped to a stope. When filling is not needed, the bottom flow is pumped by a plunger pump to a tailings pond by means of the pump station, and stockpiling of paste is performed. The method can well solve the filling problem of a gob and the stockpiling problem of tailings at the same time, filling cost is greatly reduced, the strength of filling bodies is improved, discharge of the tailings is reduced to the maximum extent, and meanwhile tailings paste is discharged.
Description
Technical field
The present invention relates to tailings paste processing technology field, particularly relate to a kind of fill based on the full tail mastic of deep wimble thickener
Fill out and store up joint method of disposal.
Background technology
2012, ministries and commissions of security production supervision and management general bureau etc. five were " with regard to strengthening Tailings Dam supervision and management work further
The instruction made " in expressly provide: can newly-built Underground metal ＆ nonmetal mines must be to being discussed using the method for mining by the way of filling
Card, and preferentially carry out the method for mining by the way of filling.With this understanding, application proportion in mine for the method for mining by the way of filling is continuously increased, its work
Skill technology has also obtained fast development in recent years.
Application with Cut-and-fill Mining Technology and development, low concentration classified tailingses consolidated fill cannot meet modern mine
Safe and environment-friendly, efficient requirement, with crude tailings be main filler highly concentrated cemented fill even paste body filling gradually
Become main flow direction.Field practice also demonstrates that, low concentration filling slurry can bring such as barricade filter net jam, stope slip draining
Difficult, down-hole is seriously polluted, cement consumption is high, obturator isolation layering a series of problems, such as, simultaneously classified tailingses using
Construction and the maintenance cost of Tailings Dam can be increased, cause the environmental pollution of earth's surface.The present invention introduces a kind of crude tailings paste body filling
Combine the new method of disposal with tailings impoundment, sufficiently lower filling cost, improve strength of filling mass, reduce to greatest extent
Tailings discharging.Meanwhile, tailings discharging concentration being also greatly improved, increasing the stocking angle of mine tailing, thus improving the service of Tailings Dam
The time limit.So, crude tailings mastic joint method of disposal can solve goaf filling and two difficulties of tailings impoundment simultaneously well
Topic, it is ensured that economic and social benefits maximize, meets " Green Mine " and builds theory.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of full tail paste body filling based on deep wimble thickener and store up connection
Close method of disposal.System involved by the method includes crude tailings, deep wimble thickener, flocculant add-on system, cement interpolation system
System, overflow water and mastic stirring system.Wherein crude tailings are generally from ore dressing plant, are pumped to deep wimble thickener；Flocculant adds
System is supported the use with deep wimble thickener；Cement add-on system supplies Binder Materials as needed；Concentrator overflow water is to a high position
Pond, for adjusting paste body filling concentration；Two grades of horizontal mixers are used for preparing mastic, stirring need the concentration mine tailing of filling with
Cement, the mastic preparing flows automatically or is pumped to stope；The concentration mine tailing not needing filling is pumped to Tailings Dam and is stored up.
Coarse aggregate add-on system, fine aggregate add-on system and additive add-on system are selected on demand.Coarse aggregate with
Fine aggregate is mainly used to adjust mastic proportioning, and then mastic mobility and mechanical property are improved.When crude tailings fine grained
Content is more or when clay content is more, and when desirable strength is higher, suitably increases coarse aggregate and fine aggregate, is conducive to mastic
Strength enhancing.Now, set up coarse aggregate and fine aggregate storehouse simultaneously, according to laboratory experiment, adjustment is optimized to mastic proportioning, reaches
To the purpose reducing cement unit consumption, raising filling intensity.Wherein coarse aggregate can be the material such as rubble, Water Quenching Slag, Gobi aggregate,
A certain interval in coarse aggregate a size of 2mm～20mm；Fine aggregate can be the material such as stock's tailings, rod milling sand, fine aggregate chi
Very little for a certain interval in 0.2mm～2mm.Additive add-on system is selected according to mastic conveying and condensation performance need,
It can be the material such as pumping admixture, retarder, accelerator, flyash.
This joint method of disposal is specific as follows:
(1) crude tailings are diluted, to concentration 5%～15%.Concrete value is determined according to laboratory experiment, then
It is pumped to deep wimble thickener, delivered to flocculant in deep wimble thickener by flocculant add-on system simultaneously, crude tailings are wadded a quilt with cotton
Retrogradation fall, thickening；
(2) when needing filling, the underflow of deep wimble thickener in step (1) is pumped to two grades of mastic stirring system and crouches
In formula blender, cement is delivered in two grades of horizontal mixers by cement add-on system simultaneously, so that underflow is fully stirred with cement
Mix, the ointment pumping after stirring to stope carries out filling；
(3) when not needing filling, the underflow of deep wimble thickener in step (1) is flow automatically or is pumped to Tailings Dam, carry out
Store up；
(4) in step (1), the overflow water of deep wimble thickener is delivered to head-tank, then by head-tank be delivered to two grades crouch
Formula blender carries out mastic concentration adjustment or flushing of pipeline.
Wherein, deep wimble thickener underflow conveyance conduit is provided with threeway conversion valve, switches underflow conveying direction at any time；Step
(1) in, flocculant is first dissolved in dissolving tank, controls adding proportion according to crude tailings of different nature by dosing pump；Step
(2), when being stirred in two grades of horizontal mixers in, it is added as needed on coarse aggregate, fine aggregate or additive.
Crude tailings come from ore dressing plant.Crude tailings to deep wimble thickener is carried out defeated by one-level or multiple stage pumping system
Send, depending on selecting the transporting resistance to concentrator top for the factory.
Deep wimble thickener is mainly used to crude tailings are dehydrated.All crude tailings enter deep wimble thickener and carry out processed,
The diameter of deep wimble thickener depends on the treating capacity of Total tailing, is highly comprehensively determined by the treating capacity and underflow density of mine tailing, dense
Close machine cone angle runs torque-combining by mine tailing underflow density, harrow frame and determines.Deep wimble thickener can be one or many according to demand
Platform is in parallel.
Flocculant add-on system and deep wimble thickener support the use.It is mainly used to accelerate mine tailing sedimentation velocity, improve dense
Machine sedimentation, dewatering efficiency.Flocculant add-on system is made up of flocculant, dissolving tank and dosing pump.When flocculant is mixed with mine tailing
The concentration of Tailings Slurry to be guaranteed.
Cement add-on system is made up of cement, cement bin and conveying worm.Cement bin top seal, conveying worm is used
To measure and to convey cement.
Overflow water refers in particular to deep wimble thickener overflow water, and overflow water is collected in head-tank.It is used for adjusting mastic concentration, rinse
Agitator tank and transfer pipeline etc..
Two grades of horizontal mixers are mainly used to stir the mastic needing filling.Cement is uniformly mixed with mine tailing.Stirring
Uniform mastic passes through plunger displacement pump or certainly flow to stope.The concentration mine tailing not needing filling is delivered to mine tailing by pumping system
Storehouse is stored up.
Coarse aggregate, fine aggregate and additive are deposited in coarse aggregate storehouse, fine aggregate storehouse and additive storehouse respectively, coarse aggregate and
Fine aggregate is given in two grades of horizontal mixers by disk feeder and belt conveyer scale, and addition is controlled by belt conveyer scale, additional
Agent is delivered in two grades of horizontal mixers by conveying worm, controls addition by micropowder scale.
The having the beneficial effect that of the technique scheme of the present invention:
The method can be all dense through deep wimble thickener by plant tailing, determines going of mine tailing further according to field demand
To that is, a set of dense system takes into account filling and two functions of tailings impoundment.While making full use of system, it is possible to achieve high-quality
The paste body filling of amount, also can implement mastic draining technology simultaneously.Mainly there is a following advantage: first, entirely combine disposal system
System is made up of one or more levels pumping plant, deep wimble thickener, two sections of Horizontal stirring equipment.Factory's crude tailings are selected to pass through one or more levels pump
Stand, all squeeze into deep wimble thickener.When needing filling, the underflow of deep cone is pumped to two-stage agitation machine by mortar pump, and cement mixing,
Prepare qualified mastic, flow automatically or be pumped to stope.When not needing filling, through one or more levels pumping plant, underflow is pumped by plunger displacement pump
Carry out mastic to Tailings Dam to store up.Second, deep wimble thickener is arranged near multi stage pumping station, is overcome using a stage dewatering technology
The unstable deficiency of vertical sand warehouse pulping underflow, technological process is simple, concentration time is short, pulp consistency is uniform.Meanwhile, using even
Continuous charging continuous discharge mode is to realize being carried out continuously of concentration process, and concentrator overflow water turbidity can be reduced to 20ntu
Below.3rd, horizontal mixer has more spiral, many with slurry contact point, is mixed tailings with cement with mechanical method
Close, there is strong adaptability, prepare steady quality and continuous operation.4th, tailings discharging concentration can improve to slightly saturation
State, slurry discharging modes are changed to mastic discharging modes, store up angle and can be improved to 3 ° by 1 °.Meanwhile, improve Tailings Dam
Safe class, saved the construction cost of Tailings Dam.
The method is applied to coloured, the various generation Total tailing such as black, noble metal, rare metal, gold and to filling matter
Amount and the higher bargh of environmental requirement.
Brief description
Fig. 1 is a kind of full tail paste body filling based on deep wimble thickener of the present invention and stores up joint method of disposal flow process
Figure；
Fig. 2 is certain ore deposit existing charging formula schematic diagram in embodiments of the invention；
Fig. 3 is charging formula schematic diagram after certain ore deposit transformation in embodiments of the invention.
Specific embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.
The present invention is directed to the problems such as existing paste filling material is single, crude tailings cannot get effectively utilizes, provides one kind
Full tail paste body filling based on deep wimble thickener and store up joint method of disposal.
It is illustrated in figure 1 the disposal process figure of the method, the crude tailings from ore dressing plant are diluted, to concentration 5%
～15%, then it is pumped to deep wimble thickener, by flocculant add-on system, flocculant is delivered in deep wimble thickener, to complete simultaneously
Tailings carries out thickening；When needing filling, by the underflow of deep wimble thickener be pumped to two grades of mastic stirring system horizontal
In blender, cement is delivered in two grades of horizontal mixers by cement add-on system simultaneously, so that underflow is sufficiently stirred for cement,
Ointment pumping after stirring carries out filling to stope；When not needing filling, the underflow of deep wimble thickener is flow automatically or is pumped to
Tailings Dam, is stored up；The overflow water of deep wimble thickener is delivered to head-tank, then is delivered to two grades by head-tank and horizontal stirs
The machine of mixing carries out mastic concentration adjustment or flushing of pipeline.
Embodiment
Certain gold mine adopts upward horizon filling mining method, and exploitation scale reaches 6000t/d, can meet the confession ore deposit need selecting factory
Ask.At present, this mine filling system mainly carries out filling using classified tailingses self-flowing pastefill, Filling density 60%-65%, according to
Its mine tailing physical property, this Filling density is substantially low.Meanwhile, filling aggregate is dehydrated using traditional vertical sand warehouse so that making
Slurry concentration is relatively low, and underflow density is unstable.Filling density low strap carrys out problems: this Gold Mine By Filling cement-sand ratio reaches 1:4,
Cement consumption is very high；In filling slurry, unnecessary water causes dehydration in stope pressure larger, ultra-fine grain and cement blocking in mine tailing
Filling counterfort filter cloth, causes the dehydration of filling dead zone difficult；In slip, excessive water causes the isolation of large or fine granule, and cement floats on and fills
Filler upper strata, ultimately results in strength of filling mass uneven.On the other hand, this mill tailings Kuku appearance is less, and the remaining length of service is about
2.0 years, once stock's saturation, then need newly to levy Tailings Dam land used and carry out Tailings Dam construction, this will be a no small spending.Make
With full tail paste body filling of the present invention with store up joint method of disposal existing filling system is transformed, fill before and after transformation
Fill out exemplary flow such as Fig. 2 and Fig. 3.Specific embodiment is described as follows:
First, retain the I and II pumping plant of former filling system, newly-increased deep wimble thickener, two sections of horizontal mixers and two
Platform plunger displacement pump.Select factory's crude tailings through the dense dehydration of deep wimble thickener, when needing filling, the underflow of deep cone is pumped to two through mortar pump
Section blender, with cement mixing to prepare qualified mastic, flow to stope certainly.When not needing filling, through secondary pumping station by underflow pump
Deliver to Tailings Dam and carry out mastic and store up.
Second, the filling intensity that this gold mine requires is 1-2mpa, the different quality containing being provided according to this mine, cement-sand ratio
Casting resin strength test results understand, for 70% paste body filling concentration, will reach 1mpa intensity, cement-sand ratio 1:9；
2mpa intensity, the cement-sand ratio of 1:7 can meet.
After existing charging formula is transform as with paste body filling and discharge joint disposal method, its superiority is concluded such as
Under:
(1) cement unit consumption reduces, and reduces filling cost
Cement-sand ratio is reduced to 1:7 to 1:9 by 1:4, and cement consumption can reduce half.Bring considerable economic effect for mine
Benefit, filling cost saves 13,990,000 yuan/year.
(2) isolation reduces, filling even intensity
Because Filling density is high, casting resin segregation phenomenon reduces, and filling intensity homogeneity is good.And down-hole dehydration is few, fall
Low subsurface environment pollution.If adopting paste body filling, year charging quantity 79.4 ten thousand m3, concentration brings up to 70% from 60%, reduces well
Lower displacement about 23.8 ten thousand m3.
(3) increase Tailings Dam storage capacity, reduce expropriation of land cost
Tailings discharging concentration is improved to more than 68% by 35%.Increased the stocking angle of mine tailing, improve Tailings Dam service
The time limit.According to engineering analogy, identical Tailings Dam takes up an area, conservative estimation, and storage capacity can improve three times.Meanwhile, improve Tailings Dam
Safe class, significant, be mine save Tailings Dam construction cost.
Tailings storage backwater tapered be changed into backwater before factory, reduce evaporation capacity, improve the water resource response rate.The dense overflow water of deep cone is permissible
Directly as domestic waters such as production and middle water.Concentration of emission is improved to 68% by 35%, then before factory, direct backwater has more
7900t/d.The price of water is according to 4 yuan/m3To count, the water price lattice reclaiming considerable more, this is also mastic discharge integrated cost
One of the reason significantly to arrange less than conventional wet.
(4) social benefit is good
Full tail paste body filling mining codes are environmentally friendly, can reduce tailings discharging to greatest extent, reduce the dirt of environment
Dye is with destruction it is considered to be realizing one of the Important Action of " Green Mine ".
To joint disposal method and original schemes synthesis economic efficiency contrast such as table 1.
Table 1 two schemes technology and economy comparison table
As can be seen from Table 1 although paste body filling planning device input aspect is more, but take a long view, cream
Body charging formula economic benefit will be far superior to existing scheme.Therefore, not only improved using crude tailings mastic joint disposal method
The quality of Underground filler, extends the life-span of Tailings Dam, increases the safe class of Tailings Dam, also drastically increase through
Ji and social benefit.
The above is the specific embodiment of certain ore deposit of the present invention it is noted that common skill for the art
For art personnel, on the premise of without departing from principle of the present invention, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of full tail paste body filling based on deep wimble thickener and store up joint method of disposal it is characterised in that: the method relates to
And crude tailings, deep wimble thickener, flocculant add-on system, cement add-on system, overflow water and mastic stirring system, concrete disposal
Method and step is as follows:
(1) crude tailings are diluted, to concentration 5%～15%, are then pumped to deep wimble thickener, are added by flocculant simultaneously
System delivers to flocculant in deep wimble thickener, carries out thickening to crude tailings；
(2) when needing filling, the underflow of deep wimble thickener in step (1) is pumped to two grades of mastic stirring system and horizontal stirs
Mix in machine, cement is delivered in two grades of horizontal mixers by cement add-on system simultaneously, so that underflow is sufficiently stirred for cement, stir
Ointment pumping after mixing carries out filling to stope；
(3) when not needing filling, the underflow of deep wimble thickener in step (1) is flow automatically or is pumped to Tailings Dam, stored up；
(4) in step (1), the overflow water of deep wimble thickener is delivered to head-tank, then is delivered to two grades by head-tank and horizontal stirs
The machine of mixing carries out mastic concentration adjustment or pipeline-cleaning；
Wherein: described deep wimble thickener underflow conveyance conduit is provided with threeway conversion valve, underflow is controlled to deliver to filling or store up；
Described flocculant add-on system includes flocculant, dissolving tank and dosing pump, and in step (1), flocculant is first molten in dissolving tank
According to different crude tailings properties, adding proportion is controlled by dosing pump after solution；
Described in step (1), crude tailings are delivered in deep wimble thickener by one or more levels pumping system；
Deep wimble thickener described in step (1) is that one or more is in parallel；
Described in step (2), cement add-on system includes cement, cement bin and conveying worm, wherein, cement bin top seal,
According to different crude tailings properties, addition and conveying cement are controlled by conveying worm；
In described step (2) during the stirring of two grades of horizontal mixers, add coarse aggregate, fine aggregate, zero kind or several in additive.
2. a kind of full tail paste body filling based on deep wimble thickener according to claim 1 and store up joint method of disposal,
It is characterized in that: described coarse aggregate is one or more of rubble, Water Quenching Slag, Gobi aggregate, coarse aggregate a size of 2-20mm.
3. a kind of full tail paste body filling based on deep wimble thickener according to claim 1 and store up joint method of disposal,
It is characterized in that: described fine aggregate is one of stock's tailings, rod milling sand or two kinds, fine aggregate a size of 0.2-2mm.
4. a kind of full tail paste body filling based on deep wimble thickener according to claim 1 and store up joint method of disposal,
It is characterized in that: described additive is one or more of pumping admixture, retarder, accelerator, flyash.
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| CN114109487A (en) * | 2021-11-09 | 2022-03-01 | 北京科技大学 | Coarse fraction full tailing paste filling method |
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| CN114474406A (en) * | 2022-02-18 | 2022-05-13 | 中冶沈勘工程技术有限公司 | High-concentration full-tailing cemented filling system |
| CN115059506A (en) * | 2022-06-02 | 2022-09-16 | 紫金矿业集团股份有限公司 | Filling equipment suitable for viscous filter-pressing tailing steady-flow feeding |
| CN115871108A (en) * | 2022-12-12 | 2023-03-31 | 湖南忠信智能装备有限公司 | Full-tailing modified body compaction and cementation stockpiling system and method |
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