CN107447743A - Combined type ore drawing Ikeda and ore drawing method with overflow pipe - Google Patents
Combined type ore drawing Ikeda and ore drawing method with overflow pipe Download PDFInfo
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- CN107447743A CN107447743A CN201710848720.7A CN201710848720A CN107447743A CN 107447743 A CN107447743 A CN 107447743A CN 201710848720 A CN201710848720 A CN 201710848720A CN 107447743 A CN107447743 A CN 107447743A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
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Abstract
The present invention relates to a kind of combined type ore drawing Ikeda with overflow pipe and ore drawing method, it is characterised in that：Some groups of ore drawing regions are made along dam direction on dry sand of tailings reservoir surface, set ore drawing branch pipe on the ore drawing main pipeline of Tailings Dam ring dam laying, every group of ore drawing region is made up of two or more rectangle Ikeda and an ore drawing passage；The more than one pond being made up of pool wall, cut-off dam and drawhole is provided with each rectangle Ikeda, the staggeredly Ikeda training dyke ridge is additionally provided with each pond；Overflow pipe is arranged with the cut-off dam in each pond；During ore drawing, secondary ore drawing mode is taken.The present invention uses above-mentioned ore drawing method, and covering ore pulp, dry beach face product is big, and ore pulp, which covers dry beach face product, can reach more than 90%, greatly reduces dam Nei Gan beaches and plays dirt area, plays effective dust suppression effect.
Description
Technical field
The invention belongs to the dust suppression technology field of mine tailing mud, more particularly to a kind of combined type ore drawing with overflow pipe
Ikeda and ore drawing method.
Background technology
Iron ore mine dry sand of tailings reservoir in dry season or wind season by generating region property dust pollution question, due to the main work(of Tailings Dam
Can store last person's slag in metal mine production process and ring water is reclaimed for selecting factory to recycle by natural filtration, Tailings Dam
Including dam body, Gan Tan, water catchment area, formed wherein dry beach is all mill tailings natural sedimentation, powder can be formed in dry season or wind season
Dirt pollution problem, the dust-suppression method of present comparative maturity is sprinkling dust suppressant solidification Gan Tan surfaces, watering dust suppression method and multitube pond
Field ore drawing method.It is preferable to spray dust suppressant anti-dust effect, but dry beach face product is big, and dynamic ore drawing, and after dust suppressant solidification again
Ore drawing will fail, so being applicable the Tailings Dam for having closed storehouse.The shortcomings that dust suppression method of sprinkling water is that spray area is big, and up-front investment takes
With big, later maintenance cost is big, and dam facing constantly increases, and watering pipeline periodically also needs to raise, and is largely applicable in storehouse
Water, influence backwater amount in storehouse.Ikeda ore drawing dust suppression method is a kind of dust-suppression method of low-cost high-efficiency, and this method is directed to tail
The dry beach face product in ore deposit storehouse is big, the unfixed feature in ore drawing position, surface configuration in utilizing works mechanical alteration dam, in storehouse Nei Gan beaches table
Ikeda is built in face, and ore pulp is placed in Ikeda, and dry beach all standing, holding are done into beach surface wettability with ore pulp, suppress airborne dust.Solve
With two key problems of ore pulp dust suppression.First, because storehouse Nei Gan beaches are the part high-land close to dam body, close to water catchment area
Dry beach gesture it is low, ore pulp flows along physical features after ore drawing, forms zanjon, and ore pulp flows in ditch, and it is very small to cover dry beach face product,
More than 85% dry beach can not be covered by ore pulp.Second, doing beach by ore pulp covering part, because mortar retention time is short, water penetration arrives
It is shallow under Gan Tan top layers, so having dried dirt after ore drawing again soon, in the dry wind season such as spring, autumn, done after general ore drawing
Beach dries 48 hours or so and begins to play dirt again.Existing Ikeda is primarily present problems with, and 1, by storehouse Nei Gan beaches topographical surface
Absolute altitude influences greatly, and into dam, extended distance is short, and the Ikeda area of build is small.2nd, Ikeda is guarantee sand Ba Geng safety, it is impossible to
Ikeda internal water accumulation is too deep, and ore drawing, which is taken, is interrupted ore drawing mode, and Ikeda ore drawing efficiency is low.3rd, water is leaked under dry beach in Ikeda,
Water catchment area in storehouse is not returned to, backwater amount in reservoir area is influenceed big.4th, coverage rate of the ore drawing ore pulp at initial stage in Ikeda to Ikeda Gan Tan
It is low, influence the anti-dust effect of Ikeda ore drawing at initial stage.5th, ore pulp accumulation is too fast in Ikeda, influences service life.6th, work is constructed in Ikeda
Journey amount is big.
The content of the invention
It is an object of the invention to provide one kind to shorten the Ikeda ore drawing time, and the ore pulp that can be improved in Ikeda efficiency and Ikeda covers
Lid rate, reduce combined type ore drawing Ikeda with overflow pipe and the ore drawing method of the quantities that Ikeda is built.
The purpose of the present invention is achieved through the following technical solutions：
A kind of combined type ore drawing Ikeda with overflow pipe of the present invention, it is characterised in that：In dry sand of tailings reservoir surface Yan Ba
Direction makes some groups of ore drawing regions, sets multiple ore drawing branch pipes on the ore drawing main pipeline of Tailings Dam ring dam laying, every group puts
Mining area domain is made up of two or more rectangle Ikeda and an ore drawing passage,
Each rectangle Ikeda is made up of the pond of more than two, and each pond is made up of pool wall, cut-off dam and drawhole, often
Individual drawhole corresponds to more than one ore drawing branch pipe, and the staggeredly Ikeda training dyke ridge is additionally provided with each pond, on each cut-off dam
On be arranged with two or three overflow pipes；
Also staggeredly the Ikeda training dyke ridge is provided with described ore drawing passage.
The length in the pond in each rectangle Ikeda incremented by successively, and cut-off dam in the latter pond into dam from dam root
Dam crest height it is higher 300mm-500 mm than corresponding previous pond cut-off dam dam root.
It is to set an ore drawing branch pipe on described ore drawing main pipeline at 25-30 rice.
In described cut-off dam surface covering Air Filter or straw mattress.
A kind of ore drawing method of the combined type ore drawing Ikeda with overflow pipe of the present invention, it is characterised in that including following step
Suddenly：
1）Build ore drawing Ikeda
Multiple ore drawing branch pipes are set on the ore drawing main pipeline of Tailings Dam ring dam laying, on dry sand of tailings reservoir surface along dam direction system
Make some groups of ore drawing regions, every group of ore drawing region with an ore drawing passage by more than two rectangle ore drawing Ikedas being formed；
The more than one pond being made up of pool wall, cut-off dam and drawhole is provided with each rectangle ore drawing Ikeda, each
Drawhole corresponds to more than one ore drawing branch pipe, and the staggeredly Ikeda training dyke ridge, the cut-off in each pond are additionally provided with each pond
Two or three overflow pipes are arranged with dam, also staggeredly the Ikeda training dyke ridge is provided with described ore drawing passage；
2）Ore drawing
2.1 are first turned on first ore drawing branch pipe of ore drawing main pipeline corresponding with first pond drawhole of first group of Ikeda
Road and second ore drawing branch pipe(tube), ore drawing is carried out in first pond into first group of Ikeda, and concentration is more than 35% ore pulp
In the presence of the Liu Ba ridge, in pond, infolding is backflowed dynamic, reduces ore pulp flowing velocity, accelerates sedimentation；When mine tailing sand wash
To when maintaining an equal level with the training dyke ridge, stop ore drawing, now, ore pulp runner of turning back is formed on first pond Nei Gantan surfaces；Beat again
Ore drawing branch pipe(tube) corresponding to opening second pond drawhole starts to carry out ore drawing to second pond, and its ore drawing method is same as above, complete
Into the first time ore drawing of every group of Ikeda；
After the first time ore drawing of 2.2 all Ikedas terminates, second of ore drawing is carried out,
During second of ore drawing, the ore drawing passage and ore drawing Ikeda while ore drawing in every group of ore drawing region, by first ore drawing branch pipe(tube)
It is correspondingly arranged with the drawhole of second ore drawing branch pipe(tube) and ore drawing passage；
3rd later ore drawing branch pipe(tube) and the drawhole in pond in each Ikeda are correspondingly arranged；Open and ore drawing passage simultaneously
Drawhole corresponding in ore drawing branch pipe(tube) 2 and every group of Ikeda the drawhole in ore drawing pond correspond to ore drawing branch pipe(tube) to through each ore drawing
Passage carries out ore drawing into each pond, after being covered after the dry beach more than 90% in pond by ore pulp, closes corresponding ore drawing branch pipe
On valve, in order in the ore drawing passage of subsequent region and Ikeda each pond carry out ore drawing, ore drawing mode by that analogy,
It is put into the ore drawing region of dam tail in order from the ore drawing region of abutment, realizes closed loop ore drawing.
The beneficial effects of the invention are as follows：
The Ikeda ore drawing time is effectively shortened, improves the ore pulp coverage rate in Ikeda efficiency and Ikeda, reduces what Ikeda was built
Quantities.First characteristic that ore drawing branch pipe(tube) ore drawing concentration is big, area coverage is wide when making full use of ore drawing total pipeline ore drawing,
The training dyke ridge of simple folded plate type is built in its ore pulp trickling direction into dam, increases ore pulp area coverage, protection cut-off dam sand
It is lost in, reduces quantities.Solve to be put into pulp density in Ikeda simultaneously big, Nei Gantan accumulations in Ikeda are too fast, and absolute altitude increased
Fast the problem of influenceing service life.
Using above-mentioned ore drawing method, ore pulp can be made to cover dry beach face product big, ore pulp cover dry beach face product can reach 90% with
On, greatly reduce dam Nei Gan beaches and play dirt area, play effective dust suppression effect.
Brief description of the drawings
Fig. 1 is the structural representation of the combined type ore drawing Ikeda with overflow pipe of the present invention.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
A kind of as shown in figure 1, combined type ore drawing Ikeda with overflow pipe of the present invention, it is characterised in that：In mine tailing
Storehouse Gan Tan surfaces make some groups of ore drawing regions along dam direction, are set on the ore drawing main pipeline 1 of Tailings Dam ring dam laying multiple
Ore drawing branch pipe 2, every group of ore drawing region are made up of two or more rectangle Ikeda 3 and an ore drawing passage 7,
Each rectangle Ikeda 3 is made up of the pond of more than two, each by pond by pool wall 3-2, cut-off dam 3-3 and drawhole
3-1 is formed, and each drawhole 3-1 corresponds to more than one ore drawing branch pipe 2, and staggeredly Ikeda training dyke is additionally provided with each pond
The ridge 5, two or three overflow pipes 8 are arranged with each cut-off dam 3-3；
Also staggeredly the Ikeda training dyke ridge 5 is provided with described ore drawing passage 7.
The length in the pond in each rectangle Ikeda incremented by successively, and cut-off dam in the latter pond into dam from dam root
3-3 dam crest height is higher 300mm-500 mm than corresponding previous pond cut-off dam 3-3 dam roots.
It is to set an ore drawing branch pipe 2 on described ore drawing main pipeline 1 at 25-30 rice.
In described cut-off dam 3-3 surfaces covering Air Filter or straw mattress.
The ore drawing method of a kind of combined type ore drawing Ikeda of the present invention, it is characterised in that comprise the following steps：
1）Build ore drawing Ikeda
Some groups of ore drawing regions are made along dam direction on dry sand of tailings reservoir surface, in the ore drawing main pipeline 1 of Tailings Dam ring dam laying
Upper to set multiple ore drawing branch pipes 2, every group of ore drawing region is by two rectangle ore drawing Ikedas more than 3 and 7 groups of an ore drawing passage
Into；
It is more than one provided with being made up of pool wall 3-2, cut-off dam 3-3 and drawhole 3-1 in each rectangle ore drawing Ikeda 3
Pond, each drawhole 3-1 correspond to more than one ore drawing branch pipe 2, and staggeredly Ikeda training dyke is additionally provided with each drawhole 3-1
The ridge 5, two or three overflow pipes 8 is arranged with the cut-off dam 3-3 in each pond, the cut-off dam 3-3 in pond is by digging
Slag makes in pick machine dam, the setting of overflow pipe 8 can effectively prevent because ore drawing excessively caused by separate dam and collapse phenomenon
Generation.
The size of ore drawing passage 7 of the present invention is in the same size with rectangle ore drawing Ikeda 3, can also be more than rectangular
Shape ore drawing Ikeda 3, also staggeredly the Ikeda training dyke ridge 5 is provided with described ore drawing passage 7.
The setting on the training dyke ridge 5 makes ore pulp be rolled in the direction trickled into dam, increases ore pulp area coverage, solves to put
It is big to enter pulp density in ore drawing Ikeda, Nei Gantan accumulations in ore drawing Ikeda are too fast, and absolute altitude increases too fast the problem of influenceing service life.
After the completion of ore drawing Ikeda is built, by several ore drawings pulled in storehouse, successive ore drawing, ore drawing closed loop is formed.
The present invention gives an ore drawing region by two rectangle ore drawing Ikedas more than 3 and 7 groups of an ore drawing passage
Into；The embodiment in three ponds is set in each rectangle ore drawing Ikeda 3, direction is followed successively by 1. number pond, 2. into dam from dam root
Number pond and 3. number pond, in each rectangle ore drawing Ikeda 3 length in pond from dam root incremented by successively, and the latter into dam
The cut-off dam 3-3 in pond dam crest height is higher 300mm-500 mm than corresponding previous pond cut-off dam dam root.Described
Cut-off dam 3-3 surfaces covering Air Filter or straw mattress.Purpose is to improve cut-off dam 3-3 scour resistance.
2）Ore drawing
2.1 are first turned on first ore drawing branch of ore drawing main pipeline corresponding with the 1. number pond drawhole 3-1 of first group of Ikeda 3
Pipeline 2 and second ore drawing branch pipe(tube) 2, ore drawing is 1. carried out in number pond into first group of Ikeda 3, concentration is more than 35%
Ore pulp in the presence of the Liu Ba ridge 5, in pond, backflow dynamic, reduces ore pulp flowing velocity, accelerates sedimentation by infolding；Work as CHARACTERISTICS OF TAILINGS SAND
It is accumulated to when maintaining an equal level with the training dyke ridge 5, stops ore drawing, now, ore pulp runner of turning back is formed on first pond Nei Gantan surfaces；
Open 2. number ore drawing branch pipe(tube) 2 corresponding to the drawhole 3-1 of pond again, ore pulp by diversion channel 4 enter corresponding to 2. in number pond,
Open 3. number ore drawing branch pipe(tube) 2 corresponding to the drawhole 3-1 of pond simultaneously, start ore pulp by diversion channel 6 enter corresponding to 3. number
Ore drawing is carried out to second pond in pond, 1. number pond ore drawing method is identical for its ore drawing method, completes the first of every group of Ikeda
Secondary ore drawing；
Because the 1. slurry concentration of first ore drawing branch pipe(tube) 2 and second ore drawing branch pipe(tube) 2 corresponding to number pond is more than 35%,
Because pulp density is big, ore pulp accelerates sedimentation, for the first time by that can reduce ore pulp flowing velocity during the training dyke ridge 5 in Ikeda
Separate meeting ore faces and accumulating a large amount of CHARACTERISTICS OF TAILINGS SANDs quickly for dam 3-3 and the training dyke ridge 5 after ore drawing, first in Ikeda, the training dyke ridge 5 it
Between width of flow path narrow, pond Nei Gantan surfaces are carried out preliminary levelling, the mineral slurry level of meeting for treat the training dyke ridge, separating dam 3-3 is done
Beach absolute altitude completes first time ore drawing after substantially increasing.
After the first time ore drawing of 2.2 all Ikedas terminates, second of ore drawing is carried out,
During second of ore drawing, the ore drawing passage 7 and each Ikeda 3 while ore drawing in every group of ore drawing region, according to first ore drawing branch
The pulp density of pipeline and second ore drawing branch pipe(tube) 2, granularity are maximum, will not form the characteristic of zanjon on storehouse Nei Gantan surfaces,
The drawhole of first ore drawing branch pipe(tube) 2 and second ore drawing branch pipe(tube) 2 and ore drawing passage 7 is correspondingly arranged, due also to putting
The training dyke ridge 5 that ore deposit passage 7 is also provided with, ore pulp accelerate sedimentation, energy by that can reduce ore pulp flowing velocity during the training dyke ridge 5
Dry beach in ore drawing passage 7 is all covered；
3rd later ore drawing branch pipe(tube) 2 and the drawhole 3-1 in pond in each Ikeda are correspondingly arranged；Opening and ore drawing simultaneously
The drawhole 3-1 in ore drawing pond corresponds to ore drawing branch pipe in ore drawing branch pipe(tube) 2 corresponding to the drawhole 3-1 of passage 7 and every group of Ikeda
Road 2 carries out ore drawing into each pond to through each ore drawing passage, after being covered after the dry beach more than 90% in pond by ore pulp, closes
Valve on corresponding ore drawing branch pipe, carries out ore drawing to each pond in the ore drawing passage of subsequent region and Ikeda in order, puts
Ore deposit mode by that analogy, the ore drawing region of dam tail is put into from the ore drawing region of abutment, realizes closed loop ore drawing in order.
Ore drawing method of the present invention not only make use of the strong characteristic of first ore drawing branch pipe(tube) ore pulp diffusivity, can also drop
The low Ikeda later stage repeats the pulp density in other Ikedas during ore drawing, reduces the speed that Ikeda Gan Tan absolute altitudes increase, and extends Ikeda
Service life.After installing overflow pipe due to Ikeda, mineral pulp level reaches automatic overflow after the absolute altitude of overflow pipe in Ikeda, no
Occur that water level is too high, separate dam 3-3 the problem of, Ikeda can thus be put with 24 hours continuous ore drawings, short time can
Full, after Ikeda product is full, the ponding in more than 48 hours Ikedas can be leaked under dry beach, due to pond internal water accumulation, slowly penetrate into ground
Under, pond Nei Gan beaches are thick containing surface layer of water, and Gan Tan surfaces keep moist time length, in more than 25 degree of dry weather of temperature, also can
Maintain 15 days or so, airborne dust at least there will be the sufficient time pair more than 15 days again after the dry beach ore drawing in such Ikeda
Ikeda in reservoir area carries out ore drawing, and guarantee forms ore drawing closed loop, and after last region ore drawing, the region of first ore drawing is also
There is not dust raising phenomenon, be not in the problem of The vanguard is cut off from the rear.
Claims (5)
- A kind of 1. combined type ore drawing Ikeda with overflow pipe, it is characterised in that：On dry sand of tailings reservoir surface along dam direction system Make some groups of ore drawing regions, multiple ore drawing branch pipes, every group of ore drawing region are set on the ore drawing main pipeline of Tailings Dam ring dam laying It is made up of two or more rectangle Ikeda and an ore drawing passage,Each rectangle Ikeda is made up of the pond of more than two, is each made up of pond pool wall, cut-off dam and drawhole, Each drawhole corresponds to more than one ore drawing branch pipe, the staggeredly Ikeda training dyke ridge is additionally provided with each pond, in each cut-off Two or three overflow pipes are arranged with dam；Also staggeredly the Ikeda training dyke ridge is provided with described ore drawing passage.
- 2. the combined type ore drawing Ikeda according to claim 1 with overflow pipe, it is characterised in that：Each rectangle pond The length in the pond in field from dam root into dam it is incremented by successively, and the latter pond cut-off dam dam crest height than corresponding The high 300mm-500 mm of previous pond cut-off dam dam root.
- 3. the combined type ore drawing Ikeda according to claim 1 with overflow pipe, it is characterised in that described ore drawing master One ore drawing branch pipe is set on pipeline at 25-30 rice.
- 4. the combined type ore drawing Ikeda according to claim 1 with overflow pipe, it is characterised in that in described cut-off Dam surface covers Air Filter or straw mattress.
- A kind of 5. ore drawing method of the combined type ore drawing Ikeda with overflow pipe, it is characterised in that including followingStep：1）Build ore drawing IkedaSome groups of ore drawing regions are made along dam direction on dry sand of tailings reservoir surface, on the ore drawing main pipeline of Tailings Dam ring dam laying Multiple ore drawing branch pipes are set, and every group of ore drawing region with an ore drawing passage by more than two rectangle ore drawing Ikedas being formed；The more than one pond being made up of pool wall, cut-off dam and drawhole is provided with each rectangle ore drawing Ikeda, each Drawhole corresponds to more than one ore drawing branch pipe, and the staggeredly Ikeda training dyke ridge, the cut-off in each pond are additionally provided with each pond Two or three overflow pipes are arranged with dam, also staggeredly the Ikeda training dyke ridge is provided with described ore drawing passage；2）Ore drawing2.1 are first turned on first ore drawing branch pipe(tube) corresponding with first pond drawhole of first group of Ikeda and second puts Ore deposit branch pipe(tube), ore drawing, work of the ore pulp that concentration is more than 35% on the Liu Ba ridge are carried out in first pond into first group of Ikeda Under, in pond, infolding is backflowed dynamic, reduces ore pulp flowing velocity, accelerates sedimentation；When CHARACTERISTICS OF TAILINGS SAND is accumulated to and the training dyke ridge When maintaining an equal level, stop ore drawing, now, ore pulp runner of turning back is formed on first pond Nei Gantan surfaces；Second pond is opened again Ore drawing branch pipe(tube) corresponding to drawhole starts to carry out ore drawing to second pond, by that analogy, completes the first of first group of Ikeda Secondary ore drawing, its ore drawing method are same as above, and complete the first time ore drawing of every group of Ikeda；After the first time ore drawing of 2.2 all Ikedas terminates, second of ore drawing is carried out,During second of ore drawing, the ore drawing passage and ore drawing Ikeda while ore drawing in every group of ore drawing region, by first ore drawing branch pipe(tube) It is correspondingly arranged with the drawhole of second ore drawing branch pipe(tube) and ore drawing passage；3rd later ore drawing branch pipe(tube) 2 and the drawhole 3-1 in pond in each Ikeda are correspondingly arranged；Opening and ore drawing simultaneously The drawhole 3-1 in ore drawing pond corresponds to ore drawing branch pipe in ore drawing branch pipe(tube) 2 corresponding to the drawhole 3-1 of passage 7 and every group of Ikeda Road 2 carries out ore drawing into each pond to through each ore drawing passage, after being covered after the dry beach more than 90% in pond by ore pulp, closes Valve on corresponding ore drawing branch pipe, carries out ore drawing to each pond in the ore drawing passage of subsequent region and Ikeda in order, puts Ore deposit mode by that analogy, the ore drawing region of dam tail is put into from the ore drawing region of abutment, realizes closed loop ore drawing in order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710848720.7A CN107447743A (en) | 2017-09-20 | 2017-09-20 | Combined type ore drawing Ikeda and ore drawing method with overflow pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710848720.7A CN107447743A (en) | 2017-09-20 | 2017-09-20 | Combined type ore drawing Ikeda and ore drawing method with overflow pipe |
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| Publication Number | Publication Date |
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| CN107447743A true CN107447743A (en) | 2017-12-08 |
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2017
- 2017-09-20 CN CN201710848720.7A patent/CN107447743A/en active Pending
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| US4003263A (en) * | 1974-05-20 | 1977-01-18 | Rourke John E O | Tube profile gage |
| CN1616158A (en) * | 2003-11-11 | 2005-05-18 | 天津渤海化工有限责任公司天津碱厂 | Method for stocking caustic sludge |
| CN1828018A (en) * | 2006-04-17 | 2006-09-06 | 中国科学院力学研究所 | Ribbed terrace method for wet type stack of fine tailings |
| CN101825226A (en) * | 2010-04-15 | 2010-09-08 | 云南大红山管道有限公司 | Circulating pulp preparation system used in iron ore concentrate pipeline transportation and control method thereof |
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Application publication date: 20171208 |
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