CN108355830A - A kind of fine sand resource recovering system and technique built in stone ore Tailings Dam - Google Patents
A kind of fine sand resource recovering system and technique built in stone ore Tailings Dam Download PDFInfo
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- CN108355830A CN108355830A CN201810189667.9A CN201810189667A CN108355830A CN 108355830 A CN108355830 A CN 108355830A CN 201810189667 A CN201810189667 A CN 201810189667A CN 108355830 A CN108355830 A CN 108355830A
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- fine sand
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- tailings dam
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- 239000004576 sand Substances 0.000 title claims abstract description 85
- 239000004575 stone Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 87
- 239000000725 suspension Substances 0.000 claims abstract description 65
- 230000018044 dehydration Effects 0.000 claims abstract description 34
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 34
- 230000008719 thickening Effects 0.000 claims abstract description 24
- 238000003756 stirring Methods 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 239000000047 product Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 12
- 239000002562 thickening agent Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 8
- 239000008187 granular material Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims 1
- 239000006228 supernatant Substances 0.000 claims 1
- 238000009736 wetting Methods 0.000 claims 1
- 238000004513 sizing Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 230000008021 deposition Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
Abstract
It is a kind of building stone ore Tailings Dam in fine sand resource recovering system and technique, including tailing aggregate plant, every thick equipment, size mixing equipment, silt particle classifying equipoment, fine sand dehydration equipment and thin mud thickening equipment；Tailing aggregate plant is connected with every thick equipment, is connected with size mixing equipment every thick equipment, and size mixing equipment is connected with silt particle classifying equipoment, and silt particle classifying equipoment is connected with fine sand dehydration equipment and thin mud thickening equipment respectively；Tailing aggregate plant is extractable and conveys the silt particle in Tailings Dam；The silt particle suspension from tailing aggregate plant can be carried out every bulk processing every thick equipment；Size mixing equipment can be to the silt particle suspension stirring and adjusting after bulk processing；Silt particle classifying equipoment can carry out classification and sorting fine sand dehydration equipment to the silt particle suspension after sizing mixing can be to the fine sand dewatering suspensions after classification；Thin mud thickening equipment can be to the thin mud suspension thickening after classification.The fine sand resource in stone ore Tailings Dam can be effectively recycled, mine resources comprehensive utilization ratio is promoted.
Description
Technical field
The present invention relates to a kind of fine sand resource recovering system and technique, especially a kind of building suitable for tailing classification recycling
Build fine sand resource recovering system and the technique in stone ore Tailings Dam.
Background technology
With the rapid development of China's infrastructure construction, sandstone aggregate consumption is substantially increased, in addition the limit of natural sand
System exploitation, the demand and accounting of Machine-made Sand constantly rise, and have promoted flourishing for sandstone industry.In exploitation of mineral resources profit
With in the process, since earlier process is not perfect, causes a portion fine sand resource heap in the form of tailing to be stored in Tailings Dam and (account for
5~10%) waste of mineral resources and land resource, is not only caused, but also brings serious environmental and safety problems；It is right
The mixed fine sand resource become silted up in Tailings Dam is recycled, be expected to be promoted the comprehensive recovery of mine resources, reduce solid waste discharge amount,
It saves the stockpiling space of tailing solid waste, tailing is avoided to pollute.
Invention content
Technical problem：The invention aims to overcome the problems, such as it is in the prior art exist, provide a kind of simple in structure, easy
Fine sand resource recovering system in the low building stone ore Tailings Dam of skill operation, flexible adjustment, overall cost and method.
Technical solution：Fine sand resource recovering system in the building stone ore Tailings Dam of the present invention, including tailing aggregate plant,
Every thick equipment, size mixing equipment, silt particle classifying equipoment, fine sand dehydration equipment and thin mud thickening equipment；The tailing gathers materials
Equipment is connected with every thick equipment, is connected with size mixing equipment every thick equipment, and size mixing equipment is connected with silt particle classifying equipoment, silt particle classification
Equipment is connected with fine sand dehydration equipment and thin mud thickening equipment respectively；The tailing aggregate plant by recirculated water, add water
Tailings Dam collection shots are delivered to through transfer pipeline with partial circulating, impact stirring is carried out to the silt particle to deposit in Tailings Dam, is allowed to shape
It at silt particle suspension, is then delivered to again every thick equipment through Pulp pump extraction, after every bulk processing, sieves lower silt particle suspension conveying
Be stirred adjusting to size mixing equipment, stir evenly and reach sorting concentration after, through Pulp pump be transported to silt particle classifying equipoment into
Row classification, the fine sand suspension after classification are conveyed to fine sand dehydration equipment, and dewatered fine sand product is transported to product storehouse, classification
Thin mud suspension afterwards is conveyed to thin mud thickening equipment, and dewatered thin mud product is transported to Tailings Dam.
The tailing aggregate plant includes high-speed water jet device, Pulp pump and transfer pipeline
Described is that curved surface fixes wedge wire screen, screen-aperture 3mm every thick equipment.
The outfit concentration detector and PLC controller that the size mixing equipment includes agitator, is located in agitator.
The silt particle classifying equipoment is spiral.
The fine sand dehydration equipment is high-frequency screen or sieve bend.
The thin mud thickening equipment includes thickener, the Pulp pump being connected with thickener and is located at below Pulp pump
Filter press, the underflow of thickener is delivered to filter press through Pulp pump and carries out filter-press dehydration.
Implement the fine sand resource recovery process in the building stone ore Tailings Dam of above system：It is right using tailing aggregate plant
Silt particle mixture in Tailings Dam is extracted and is conveyed, and partial circulating is arranged and stirs the tailing progress water jets impact for collecting shots
It mixes, silt particle suspension is made to be in suspended state, convenient for extracting conveying；Silt particle suspension is delivered to through Pulp pump extraction every thick equipment
Carry out every bulk processing, make enter size mixing equipment in solid particle size be less than 3mm, every thick equipment oversize be coarse granule and sundries,
Sieve flows down to be transported to size mixing equipment and be stirred and size mixing, to obtain being suitble to the material concentration of sorting, solid masses in size mixing equipment
A concentration of 25-30%；Suspension from size mixing equipment is transported to silt particle classifying equipoment and carries out mud, sand classification, silt particle separation
Thin mud suspension and fine sand suspension are formed afterwards, and fine sand suspension, which is delivered to after fine sand dehydration equipment is dehydrated, obtains fine sand production
Product；The backwater of thin mud suspension and fine sand dehydration equipment be delivered to thin mud thickening equipment carry out concentration and filter-press dehydration after
Obtain thin mud product.
Silt particle suspension in part is recycled back to collection shots after isocon is pressurizeed by jet nozzle during tailing gathers materials, and rises
To the effect for impacting and stirring the spot deposition silt particle that gathers materials.
Advantageous effect：Due to the adoption of the above technical scheme, the present invention by tailing aggregate plant, every thick equipment, size mixing equipment,
Silt particle classifying equipoment, fine sand dehydration equipment, thin mud thickening equipment composition.Tailing aggregate plant be used for silt particle mixture into
Row extracts and conveying；It is used to carry out every bulk processing silt particle suspension every thick equipment；Size mixing equipment be used for silt particle suspension into
Row stirring is sized mixing, through concentration detector detection and PLC controller adjusting control silt particle suspension concentration, to obtain being suitble to sorting
Material concentration；Silt particle classifying equipoment is for being classified silt particle suspension, to be classified out fine sand product from silt particle suspension；
Fine sand dehydration equipment is used to be dehydrated the fine sand suspension that classification obtains；After thin mud thickening equipment is used for classification
Thin mud suspension carries out thickening.Silt particle separation is realized using spiral, realize tailing warehouse sand fetching, classification and is taken off
Water recycles the fine sand in stone ore tailing, avoids the wasting of resources, improve economic benefit and economy of resources, can be to Tailings Dam
In tailing be further classified, the fine sand wherein carried secretly is classified out and is recycled, can effectively be promoted mine resources comprehensive utilization
Rate reduces the operating pressure of Tailings Dam, increases economic efficiency.And simple, flexible adjustment, overall cost are low with process structure
The advantages that.
Description of the drawings
Fig. 1 is the fine sand resource recovering system schematic diagram in a kind of building stone ore Tailings Dam of the present invention.
In figure：1- Pulp pumps, 2- curved surfaces fix wedge wire screen, 3- agitators, 4- spirals, 5- high-frequency screens, 6- concentrations
Machine, filter press.
Specific implementation mode
The invention will be further described for embodiment in below in conjunction with the accompanying drawings：
The present invention building stone ore Tailings Dam in fine sand resource recovering system, including tailing aggregate plant 1, every thick equipment
2, size mixing equipment 3, silt particle classifying equipoment 4, fine sand dehydration equipment 5 and thin mud thickening equipment 6；The tailing aggregate plant
1 is connected with every thick equipment 2, is connected with size mixing equipment 3 every thick equipment 2, and size mixing equipment 3 is connected with silt particle classifying equipoment 4, silt particle point
Grade equipment 4 is connected with fine sand dehydration equipment 5 and thin mud thickening equipment 6 respectively；The tailing aggregate plant 1 includes high speed
Water jet device, Pulp pump and transfer pipeline, by high-speed water jet device by recirculated water, add water and partial circulating through delivery pipe
Road is delivered to Tailings Dam collection shots, and the partial circulating refers to the silt suspension that Pulp pump extracts, through valve in transfer pipeline
Door is adjusted, and a part of silt particle suspension a little carries out impact stirring back to gathering materials, and plays the role of adjusting flow.Tailings Dam collection
Shots carry out impact stirring to the silt particle to deposit in Tailings Dam, are allowed to form silt particle suspension, are then extracted again through Pulp pump defeated
It send to every thick equipment 2, is that curved surface fixes wedge wire screen every thick equipment 2, screen-aperture 3mm, after every thick equipment 2 every bulk processing,
The lower silt particle suspension of sieve is transported to size mixing equipment 3 and is stirred adjusting, and the size mixing equipment 3 includes agitator, is located at stirring
Outfit concentration detector in bucket and PLC controller.Silt particle suspension is delivered in agitator, is detected through concentration detector, when
When silt particle suspension concentration is greater than the set value, PLC controller control valve, it is dense to reduce silt particle suspension that water is added in increase
Degree；When silt particle suspension concentration is less than setting value, the reduction of PLC controller control valve adds water to increase silt particle suspension
Concentration.After size mixing equipment 3 stirs evenly and reaches sorting concentration, it is transported to silt particle classifying equipoment 4 through Pulp pump and is classified, mud
Sand classifying equipoment 4 is spiral.Fine sand suspension after spiral is classified is conveyed to fine sand dehydration equipment 5, carefully
Sand dehydration equipment 5 is high-frequency screen or sieve bend.Dewatered fine sand product is transported to product storehouse, and the thin mud suspension after classification is defeated
Thin mud thickening equipment 6 is given, thin mud thickening equipment 6 includes thickener, the Pulp pump being connected with thickener and is located at
Filter press below Pulp pump, the underflow of thickener are delivered to filter press through Pulp pump and carry out filter-press dehydration.Dewatered thin mud
Product is transported to Tailings Dam.
The tailing aggregate plant 1 is provided with small for the silt particle mixture in Tailings Dam to be extracted and conveyed
It recycles and water jets impact stirring is carried out to the silt particle mixture for collecting shots, silt particle mixture is made to be in suspended state, convenient for extracting
And conveying, the tailing aggregate plant are made of high-speed water jet device, Pulp pump and ore pulp pipeline；
It is described every thick equipment 2 to be used to that the silt particle suspension from tailing aggregate plant 1 every bulk processing, meet follow-up
The top size requirement of classifying equipoment, oversize are coarse granule and sundries, and wedge wire screen, wedge wire screen are fixed using curved surface every thick equipment
Sieve pore be 3mm；
The size mixing equipment 3 is used for being stirred and sizing mixing from the silt particle suspension every thick equipment 2, to obtain being suitble to point
The material concentration of choosing automatically adjusts the mass concentration of silt particle suspension by concentration detector and PLC controller；
The silt particle classifying equipoment 4 is used to carry out, by grading, realizing mud to the silt particle suspension from size mixing equipment 3
The purpose of sand separation, the silt particle classifying equipoment are spiral, feed thickness 25-30wt%；
The fine sand dehydration equipment 5 obtains moisture for being dehydrated to the fine sand suspension from silt particle classifying equipoment 4
Satisfactory fine sand product, the fine sand dehydration equipment are high-frequency screen；
The thin mud thickening equipment 6 is for being concentrated and being taken off to the thin mud suspension from silt particle classifying equipoment 4
Water, thin mud thickening equipment are thickener and filter press.
Fine sand resource recovery process in the building stone ore Tailings Dam of the present invention：Using tailing aggregate plant 1, to Tailings Dam
In silt particle mixture extract and convey, and be arranged partial circulating to collect shots tailing carry out water jets impact stirring, make
Silt particle suspension is in suspended state, convenient for extracting conveying；Silt particle suspension is delivered to through Pulp pump extraction and is carried out every thick equipment 2
Every bulk processing, make to enter the solid particle size in size mixing equipment 3 and be less than 3mm, large granular materials can be effectively reduced, silt particle classification is set
The influence of standby 4 grading effects is coarse granule and sundries every thick equipment oversize, and sieve, which flows down, to be transported to size mixing equipment 3 and be stirred
It sizes mixing, to obtain being suitble to the material concentration of sorting, a concentration of 25-30% of solid masses in size mixing equipment；Silt particle mixture is through adjusting
Slurry equipment 3 reaches the feed thickness that suitable silt particle classifying equipoment 4 sorts after sizing mixing, improve grading effect and economic benefit；In the future
It is transported to silt particle classifying equipoment 4 from the suspension of size mixing equipment 3 and carries out mud, sand classification, thin mud suspension is formed after silt particle separation
With fine sand suspension, fine sand suspension is delivered to acquisition fine sand product after fine sand dehydration equipment 5 is dehydrated；Thin mud suspension and
The backwater of fine sand dehydration equipment 5 is delivered to after thin mud thickening equipment 6 carries out concentration and filter-press dehydration and obtains thin mud product.
Silt particle suspension in part is recycled back to collection shots after isocon is pressurizeed by jet nozzle during tailing gathers materials, play impact and
Stir the effect for the spot deposition silt particle that gathers materials.Fine sand dehydration equipment 5 can carry out the fine sand suspension from silt particle classifying equipoment 4
Dehydration obtains the satisfactory fine sand product of moisture；Thin mud thickening equipment 6 is used for from the thin of silt particle classifying equipoment 4
Mud suspension is concentrated and is dehydrated.
Oversize is coarse granule and sundries after every the processing of thick equipment 2, and sieve low suspension liquid is delivered to agitator, is examined through concentration
It surveys device detection and PLC controller adjusting adds water to control silt particle suspension concentration, when detectable concentration is higher, pass through controller
Increase adds water to reduce concentration, when detectable concentration is relatively low, adds water by controller reduction to increase concentration；It sizes mixing uniformly
Spiral, feed thickness 25-30wt%, to ensure that grading effect, ore pulp are fed from top are flowed by transfer pipeline
Afterwards, slurry is flowed from above to below along helicoid, is layered along slot flow process, is finally detached in end coils, is being cut
It takes the lower shunting of device effect to obtain the fine sand and thin mud of the particle containing size fractionated, interceptor angle can be freely adjusted according to product granularity
Degree；Fine sand suspension flows into high-frequency screen and is dehydrated by the road, sieves lower underflow and is delivered to thickener, dewatered fine sand product by
Belt conveyor is sent to product storehouse and squeezes into filter-press dehydration in filter press after the concentrated machine concentration of thin mud suspension through Pulp pump, press
Filter filtrate is delivered in agitator, and dewatered thin mud product transports Tailings Dam stockpiling.
Claims (9)
1. the fine sand resource recovering system in a kind of building stone ore Tailings Dam, it is characterised in that：It includes tailing aggregate plant
（1）, every thick equipment（2）, size mixing equipment（3）, silt particle classifying equipoment（4）, fine sand dehydration equipment（5）With thin mud thickening equipment
（6）；The tailing aggregate plant（1）With every thick equipment（2）It is connected, every thick equipment（2）With size mixing equipment（3）It is connected, sizes mixing
Equipment（3）With silt particle classifying equipoment（4）It is connected, silt particle classifying equipoment（4）Respectively with fine sand dehydration equipment（5）It is de- with thin mud concentration
Wetting system（6）It is connected；The tailing aggregate plant（1）By recirculated water, add water and partial circulating is delivered to tailing through transfer pipeline
Library collection shots carry out impact stirring to the silt particle to deposit in Tailings Dam, are allowed to form silt particle suspension, then again through slurry pumping
It takes and is delivered to every thick equipment（2）, after every bulk processing, sieve lower silt particle suspension and be transported to size mixing equipment（3）Adjusting is stirred,
After stirring evenly and reaching sorting concentration, silt particle classifying equipoment is transported to through Pulp pump（4）It is classified, the fine sand after classification is outstanding
Supernatant liquid is conveyed to fine sand dehydration equipment（5）, dewatered fine sand product is transported to product storehouse, the thin mud suspension conveying after classification
Give thin mud thickening equipment（6）, dewatered thin mud product is transported to Tailings Dam.
2. the fine sand resource recovering system in building stone ore Tailings Dam according to claim 1, which is characterized in that described
Tailing aggregate plant（1）Including high-speed water jet device, Pulp pump and transfer pipeline.
3. the fine sand resource recovering system in building stone ore Tailings Dam according to claim 1, which is characterized in that described
Every thick equipment（2）Wedge wire screen, screen-aperture 3mm are fixed for curved surface.
4. the fine sand resource recovering system in building stone ore Tailings Dam according to claim 1, which is characterized in that described
Size mixing equipment（3）Including agitator, the outfit concentration detector being located in agitator and PLC controller.
5. the fine sand resource recovering system in building stone ore Tailings Dam according to claim 1, which is characterized in that described
Silt particle classifying equipoment（4）For spiral.
6. the fine sand resource recovering system in building stone ore Tailings Dam according to claim 1, which is characterized in that described
Fine sand dehydration equipment（5）For high-frequency screen or sieve bend.
7. the fine sand resource recovering system in building stone ore Tailings Dam according to claim 1, which is characterized in that described
Thin mud thickening equipment（6）The Pulp pump being connected including thickener, with thickener and the filter press being located at below Pulp pump are dense
The underflow of contracting machine is delivered to filter press through Pulp pump and carries out filter-press dehydration.
8. the fine sand resource recovery process in a kind of building stone ore Tailings Dam for implementing system described in claim 1, feature exist
In：Using tailing aggregate plant（1）, the silt particle mixture in Tailings Dam is extracted and is conveyed, and partial circulating is set to collection
The tailing of shots carries out water jets impact stirring, and silt particle suspension is made to be in suspended state, convenient for extracting conveying；Silt particle suspension
It is delivered to every thick equipment through Pulp pump extraction（2）It carries out, every bulk processing, making to enter size mixing equipment（3）In solid particle size be less than
3mm is coarse granule and sundries every thick equipment oversize, and sieve flows down and is transported to size mixing equipment（3）It is stirred and sizes mixing, to be fitted
The material concentration for closing sorting, a concentration of 25-30% of solid masses in size mixing equipment；Size mixing equipment will be come from（3）Suspension conveying
To silt particle classifying equipoment（4）Mud, sand classification are carried out, forms thin mud suspension and fine sand suspension after silt particle separation, fine sand suspends
Liquid is delivered to fine sand dehydration equipment（5）Fine sand product is obtained after being dehydrated；Thin mud suspension and fine sand dehydration equipment（5）Sieve
Lower water is delivered to thin mud thickening equipment（6）Thin mud product is obtained after carrying out concentration and filter-press dehydration.
9. the fine sand recovery process in building stone ore Tailings Dam according to claim 8, it is characterised in that：Tailing gathered materials
Silt particle suspension in part is recycled back to collection shots after isocon is pressurizeed by jet nozzle in journey, plays impact and stirring collection shots
The effect of precipitated mud and sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810189667.9A CN108355830A (en) | 2018-03-08 | 2018-03-08 | A kind of fine sand resource recovering system and technique built in stone ore Tailings Dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810189667.9A CN108355830A (en) | 2018-03-08 | 2018-03-08 | A kind of fine sand resource recovering system and technique built in stone ore Tailings Dam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108355830A true CN108355830A (en) | 2018-08-03 |
Family
ID=63003956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810189667.9A Pending CN108355830A (en) | 2018-03-08 | 2018-03-08 | A kind of fine sand resource recovering system and technique built in stone ore Tailings Dam |
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| CN (1) | CN108355830A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114455893A (en) * | 2022-01-27 | 2022-05-10 | 中国地质科学院矿产综合利用研究所 | Method for controlling pollution of electrolytic manganese slag tailing pond through cementing controlled release |
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| CN106492501A (en) * | 2016-10-10 | 2017-03-15 | 王芹 | A kind of single-stage segregation apparatuss and its method and purposes for animal-plant material |
| CN208177649U (en) * | 2018-03-08 | 2018-12-04 | 中国矿业大学 | A kind of fine sand resource recovering system built in stone ore Tailings Dam |
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