CN113982683A - Solidifying and piling method and system for building material mine sand washing mud - Google Patents
Solidifying and piling method and system for building material mine sand washing mud Download PDFInfo
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- CN113982683A CN113982683A CN202111263206.XA CN202111263206A CN113982683A CN 113982683 A CN113982683 A CN 113982683A CN 202111263206 A CN202111263206 A CN 202111263206A CN 113982683 A CN113982683 A CN 113982683A
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- 238000005406 washing Methods 0.000 title claims abstract description 116
- 239000004576 sand Substances 0.000 title claims abstract description 112
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000004566 building material Substances 0.000 title claims abstract description 15
- 239000004568 cement Substances 0.000 claims abstract description 44
- 239000002002 slurry Substances 0.000 claims abstract description 29
- 238000003756 stirring Methods 0.000 claims abstract description 21
- 238000007711 solidification Methods 0.000 claims abstract description 16
- 230000008023 solidification Effects 0.000 claims abstract description 16
- 230000018044 dehydration Effects 0.000 claims abstract description 9
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 230000004913 activation Effects 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 5
- 206010016256 fatigue Diseases 0.000 abstract 5
- 238000005259 measurement Methods 0.000 abstract 2
- 239000004570 mortar (masonry) Substances 0.000 description 12
- 238000002360 preparation method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 208000005156 Dehydration Diseases 0.000 description 7
- 239000008394 flocculating agent Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 238000007726 management method Methods 0.000 description 5
- 208000028659 discharge Diseases 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005352 clarification Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 239000011449 brick Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/0418—Wet materials, e.g. slurries
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Ceramic Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a solidification and stockpiling method and a system of building material mine sand washing mud, wherein the method comprises the following steps of carrying out efficient dehydration and concentration on the sand washing mud to obtain high-concentration sand washing mud; adding cement into the high-concentration sand washing mud obtained in the step (1) and stirring to obtain paste sand washing mud which is not isolated and is not dehydrated; and (3) outputting the paste sand washing slurry obtained in the step (2) through a pipeline by using an industrial pump to form the final solidified stockpiling of the sand washing slurry. This system includes high-efficient enrichment facility, cement measurement feeder, mixer, washed-out sand mud output device, and the washed-out sand mud warp pass through pipeline input mixer after high-efficient enrichment facility is concentrated, and cement delivers to the mixer through cement measurement feeder, and washed-out sand mud and cement make the washed-out sand mud after the stirring, through pipeline pump delivery output, form the solidification of final washed-out sand mud and pile up and deposit. The invention can realize stable, safe and efficient disposal of the sand washing mud and solve the problem of discharge of bulk waste of building materials and mines.
Description
Technical Field
The invention relates to treatment of sand washing mud in building sand production in the field of buildings, in particular to a solidification and stockpiling method and a solidification and stockpiling system of the sand washing mud of a building material mine.
Background
A large amount of sand washing mud is generated in the process of mining and stone crushing of building stone ores, belongs to ultrafine particle-grade solid waste, and has a low concentration (10-30%) before concentration and dehydration treatment, wherein the median particle diameter d50Generally, the particle size is below 20 mu m (600 meshes), due to the lack of an effective utilization way, most of the stone ores are stockpiled or discharged into a tailing pond in a site-selective manner at present, and a small part of sand washing mud can be used for soil solidification road engineering, brick making, ceramic making and the like after being filter-pressed.
Traditional sand washing mud adopts concentration + filter-pressing + outer discharge treatment mode, and main existence problem as follows:
1. the dehydration process is complicated and the investment is large. Because the traditional concentration tank has poor dewatering capacity, low underflow concentration and high safety risk of direct discharge, the requirement of stacking in a waste dump can be met only by adding filter pressing equipment to further improve the concentration of the sand washing slurry. The two-stage dehydration process not only increases the management difficulty, but also greatly raises the equipment investment, and in addition, the labor cost, the power consumption, the wearing parts, the civil engineering cost and the site cost are increased.
2. The direct stacking and maintenance cost of the waste dump is high, and the safety management requirement is high. The dumping yard is mostly piled by adopting an automobile transportation mode, and the automobile transportation cost of the dumping yard accounts for 35 to 50 percent of the total dumping cost. In addition, in areas with abundant rainfall, the processing mode of directly discharging the filter-pressed mud cakes to a dumping site needs a more strict and reasonable management mode for mines to avoid disasters such as landslide and debris flow of the dumping site caused by rainfall, and the rainy characteristic also greatly increases the maintenance cost of drainage, slope reinforcement and the like of the dumping site.
Disclosure of Invention
The invention aims to provide a solidification and stockpiling method and a solidification and stockpiling system for building material mine sand washing mud, which have the advantages of simple dehydration process, low cost and convenience in solidification and stockpiling.
The invention provides a solidification and stockpiling method of building material mine sand washing mud, which comprises the following steps
(1) Performing efficient dehydration and concentration on the sand washing mud to obtain high-concentration sand washing mud;
(2) adding cement into the high-concentration sand washing mud obtained in the step (1) and stirring to obtain paste sand washing mud which is not isolated and is not dehydrated;
(3) and (3) outputting the paste sand washing slurry obtained in the step (2) through a pipeline by using an industrial pump to form the final solidified stockpiling of the sand washing slurry.
The proportion of the cement to the high-concentration sand washing slurry in the step (2) is 1: 10-1: 30.
And (3) adding cement into the high-concentration sand washing slurry in the step (2) and then stirring for 2-5 minutes.
And (3) when the high-concentration sand washing slurry in the step (2) is added into cement and stirred, water can be added for adjusting the concentration.
The system comprises a high-efficiency concentration device, a cement metering and feeding device, a stirrer and a sand washing slurry output device, wherein the sand washing slurry is concentrated by the high-efficiency concentration device and then is input into the stirrer through a pipeline, the cement is conveyed to the stirrer through the cement metering and feeding device, the sand washing slurry and the cement are stirred to prepare the sand washing slurry, and the sand washing slurry is conveyed and output through the pipeline by a pump to form the final solidification and stockpiling of the sand washing slurry.
The high-efficiency concentration device comprises a mud washing mortar diversion trench with a feeding cylinder provided with a spiral involute shape.
The high-efficiency concentration device comprises a sand washing mud bin body, and the bottom of the sand washing mud bin body is provided with a gas disturbance type homogeneous activation mechanism. The stirrer adopts a high-speed activation stirrer.
The cement metering and feeding device comprises a cement bin, a spiral conveyor and a spiral metering scale, and cement in the cement bin is metered by the spiral metering scale through the spiral conveyor and then is conveyed to the stirring machine.
The system also includes a water supply tank for adjusting the concentration of the material in the blender.
The sand washing mud is concentrated firstly, then is gelled by cement, and is stirred to form paste-shaped sand washing mud which can be gradually solidified and has certain strength, the treated sand washing mud is not separated and dehydrated, and an industrial pump is adopted to convey the sand washing mud through a pipeline to form the final solidified pile of the sand washing mud. The method can realize the recycling of the overflow clear water after the concentration of the sand washing mud, also realize the stable, safe and efficient disposal of the sand washing mud, and solve the problem of the discharge of the bulk waste of the building material mine.
Drawings
FIG. 1 is a process flow diagram of the process of the present invention.
FIG. 2 is a schematic diagram of the present invention using a high efficiency concentration apparatus.
Fig. 3 is a cross-sectional view taken along line a-a of fig. 2.
Detailed Description
The solidification and stockpiling method of the building material mine sand washing mud comprises the steps of carrying out efficient dehydration and concentration on the sand washing mud, obtaining high-concentration sand washing mud through an efficient concentration device and a flocculant adding mode, then adding cement into the high-concentration sand washing mud, stirring and mixing to obtain paste sand washing mud which is not isolated and is not dehydrated, and carrying out pumping and stockpiling through a pipeline, wherein the paste sand washing mud can be solidified automatically in a short time. The specific implementation can be realized by the implementation system of the invention.
Referring to fig. 1, the system diagram of the present invention reflects the detailed process and system structure of the whole implementation. From fig. 1 it can be seen that the system of the invention comprises:
(1) a sand washing mud thickening system: the system is provided with a high-efficiency concentration device and a flocculant adding device, sand washing mud is pumped into the high-efficiency concentration device, a flocculant is fed into the high-efficiency concentration device through the flocculant adding device, the sand washing mud is dehydrated and concentrated in the high-efficiency concentration device under the action of the flocculant, then the sand washing mud is disturbed comprehensively, the sand washing mud is homogenized and activated, and the sand washing mud can be stably conveyed to a stirring preparation system from a pipeline. The efficient concentration device adopts a homogeneous activation mechanism with gas disturbance, and has a good effect, for example, a paste storage thickener disclosed in Chinese patent ZL202021809408.0, and a flocculating agent adding device only uses a conventional flocculating agent adding device.
(2) Cement metering and feeding system: the system comprises a cement bin, a spiral conveyor and a spiral metering scale, wherein cement is uniformly discharged to the spiral metering scale by the spiral conveyor at the bottom of the cement bin, and is metered by the spiral metering scale and then conveyed to the stirring preparation system. The proportion of cement to high-concentration sand washing slurry is 1: 10-1: 30, calculating the cement addition amount according to the high-concentration sand washing slurry
(3) The concentrated water supply system: the system comprises a water supply tank, wherein concentrated water in the water supply tank can utilize clear water overflowed by the high-efficiency concentration device, and the water supply tank is higher than the high-efficiency concentration device so as to be automatically conveyed to a stirring preparation system through a pipeline and an adjusting valve.
(4) Stirring preparation system: comprising a mixer, which takes into account the need for a sand washing slurry to be piped and the sand washing slurry particles
The stirrer is a high-speed activation stirrer, for example, a flexible high-speed activation stirrer disclosed in Chinese patent ZL201922119841.5, which can make materials move in a stirring barrel in complex manner and subjected to strong shearing and twisting, and the efficiency of the stirrer is usually multiple times that of a common stirrer. The stirring shaft has a large action range and good slurry stirring uniformity. Stirring for 2-5 minutes.
The concentrated sand washing slurry, cement and water are activated and stirred for a period in a stirring preparation system to prepare the sand washing slurry which is pasty and can be gradually solidified and has certain strength.
(5) A slurry pumping system: the prepared sand washing slurry is pumped to a strip mine or a dumping yard through a pipeline for solidification and stockpiling under the action of a delivery pump.
The high-efficiency concentration device in the sand washing mud thickening system can be a paste storage thickener disclosed by ZL202021809408.0, and if the following high-efficiency concentration device is adopted from the perspective of continuously processing a large amount of sand washing mud, the specific structure is shown in figure 2 and figure 3.
As can be seen from figure 2, the high-efficiency concentration device is provided with a bin body 1, the inner bottom surface 11 of the bin body is flat, the ratio of the diameter of the inner bottom surface 11 of the bin body to the height of the side wall 12 of the bin body is 1: 1-2: 1, so that high-capacity reliable storage can be realized, and the underflow concentration can be improved by means of a high mud layer compression area. The upper part of the side wall 12 of the bin body is provided with an overflow port 6, and the lower part is provided with a bottom flow port 5. The bottom in the storehouse body 1 is equipped with the homogeneous activation mechanism 4, and this mechanism mainly has base plate 41, air nozzle 42, and air nozzle 42 installs on base plate 41, supplies gas to air nozzle 42 by outside air compressor machine and pipe, makes each air nozzle jet air to the mud washing mortar, and the disturbance mud washing mortar makes the little mud washing mortar that its bottom precipitated stir evenly with the excessive mud washing mortar on upper portion and becomes the mud washing mortar of homogeneous activation to do benefit to and discharge from underflow opening 5. The upper part of the side wall 12 of the bin body 1 is also provided with a step drain valve 3, so that the clear water at the upper part of the mud washing mortar in the bin body is discharged in time to concentrate the mud washing mortar.
The feeding cylinder 2 is mounted on the top of the bin body 1, as can be seen in connection with fig. 3: the feed cylinder 2 is provided with a spiral involute-shaped guide groove 21 for washing mortar, and the washing mortar is sent into the bin body 1 through the guide groove 21 for washing mortar by an external pump. The mud washing mortar enters the central steady flow feeding cylinder 2 along the involute direction, so that the turbulence can be reduced to the greatest extent, and the optimal fluid state can be obtained.
When the high-efficiency concentration device works, the sand washing mud pump sends the sand washing mud to the feeding cylinder 2, the flocculating agent adding device also sends the flocculating agent to the feeding cylinder 2, the sand washing mud and the flocculating agent enter the bin body 1 through the spiral involute-shaped sand washing mud diversion trench 21, and the sand washing mud is high-efficiency dense and overflows for clarification under the flocculation and sedimentation effects. The mud washing sand can be stored in the bin body 1 for a period of time and then the clear water at the upper part is discharged through the step valve, so as to further improve the concentration of the underflow. After the mud washing sand is dense, the homogenizing activation mechanism 4 at the bottom of the bin body is opened, the mud washing sand is subjected to comprehensive disturbance homogenizing activation, and after the homogenizing activation is finished, the high-concentration mud washing sand through the underflow opening 5 is conveyed to the stirring preparation system in a stable state through the pipeline.
When the system works, the sand washing mud is pumped to the high-efficiency concentration device, the flocculating agent is also fed to the high-efficiency concentration device through the flocculating agent adding device, the sand washing mud is high-efficiently thickened and overflowed for clarification under the action of flocculation and sedimentation, and then is subjected to homogenization and activation, preferably, a gas disturbance type homogenization and activation mechanism is adopted to comprehensively disturb the thickened sand washing mud, so that the thickened sand washing mud can be stably fed to the stirring preparation system through a pipeline. The cement metering and feeding system outputs cement in the cement bin through the screw conveyer, and the cement is weighed according to a set amount through the screw metering scale and then is conveyed to the stirring preparation system. The concentrated water in the water supply tank of the concentrated water supply system is automatically conveyed to the stirring preparation system through a pipeline and a regulating valve. The washed sand, cement and water are stirred and mixed in a stirrer according to a set proportion to prepare paste-shaped washed sand slurry which is not isolated and not dehydrated, and the prepared washed sand slurry is pumped to an open pit mine or a dumping yard through a pipeline for solidification and stockpiling under the action of a delivery pump by a slurry pumping system.
The invention solves the problems of complicated dehydration process, high investment, high management difficulty, high stacking and transportation cost, high maintenance cost, high safety management requirement and the like of a refuse dump after filter pressing in the prior art.
The invention prepares the paste-shaped sand washing mud which is not separated and not dehydrated by adding cement after the sand washing mud is efficiently dewatered and thickened, the paste-shaped sand washing mud can be output to a designated position through a pipeline and can be automatically solidified after a period of time, thereby not only realizing the recycling of overflow clear water after the sand washing mud is concentrated, but also realizing the stable, safe and efficient disposal of the sand washing mud, solving the problem of discharging of the bulk waste of the building material mine, and being capable of continuously disposing, large in disposal quantity, low in cost and easy to implement.
Claims (10)
1. The solidifying and piling method of the sand washing mud for the building material mine comprises the following steps
(1) Performing efficient dehydration and concentration on the sand washing mud to obtain high-concentration sand washing mud;
(2) adding cement into the high-concentration sand washing mud obtained in the step (1) and stirring to obtain paste sand washing mud which is not isolated and is not dehydrated;
(3) and (3) outputting the paste sand washing slurry obtained in the step (2) through a pipeline by using an industrial pump to form the final solidified stockpiling of the sand washing slurry.
2. The method for solidifying and piling the building material mine sand washing mud according to claim 1, wherein the ratio of the cement to the high-concentration sand washing mud in the step (2) is 1: 10-1: 30.
3. The solidification and stockpiling method of the building material mine sand washing mud according to claim 1 or 2, characterized in that the high-concentration sand washing mud in the step (2) is added with cement and stirred for 2-5 minutes.
4. The method for solidifying and piling up the building material mine sand washing mud as claimed in claim 1, wherein the high-concentration sand washing mud of step (2) is added with water for adjusting the concentration when being added with cement and stirred.
5. The implementation system of the solidification and stockpiling method of the building material mine sand washing mud as claimed in claim 1, wherein the system comprises a high-efficiency concentration device, a cement metering and feeding device, a stirrer and a sand washing mud output device, the sand washing mud is concentrated by the high-efficiency concentration device and then is input into the stirrer through a pipeline, the cement is sent to the stirrer through the cement metering and feeding device, the sand washing mud and the cement are stirred to prepare the sand washing mud, and the sand washing mud is pumped and output through the pipeline to form the final solidification and stockpiling of the sand washing mud.
6. The system according to claim 5, wherein the high efficiency concentration device comprises a mud washing slurry guide groove with a spiral involute shape on the feed cylinder.
7. The system of claim 5, wherein the high-efficiency concentration device comprises a sand washing mud bin body, and the bottom of the sand washing mud bin body is provided with a gas disturbance type homogeneous activation mechanism.
8. The system of claim 5, wherein the blender is a high speed activation blender.
9. The implementation system of claim 5, wherein the cement metering and feeding device comprises a cement bin, a screw conveyor and a screw scale, and cement in the cement bin is metered by the screw conveyor through the screw scale and then is sent to the mixer.
10. The system of claim 5, further comprising a water supply tank for adjusting the concentration of the material in the blender.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111263206.XA CN113982683A (en) | 2021-10-28 | 2021-10-28 | Solidifying and piling method and system for building material mine sand washing mud |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111263206.XA CN113982683A (en) | 2021-10-28 | 2021-10-28 | Solidifying and piling method and system for building material mine sand washing mud |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912865A (en) * | 2010-08-02 | 2010-12-15 | 河海大学 | Method for solidifying and dry-stacking mill tailings without tailing reservoir |
| CN102442808A (en) * | 2010-10-15 | 2012-05-09 | 中国矿业大学(北京) | All tailing cementing and discharging technology |
| CN105696518A (en) * | 2016-01-28 | 2016-06-22 | 中钢集团马鞍山矿山研究院有限公司 | Curing and dry heaping method for fine grained tailings |
| CN113217090A (en) * | 2021-03-19 | 2021-08-06 | 代县双立选厂 | Large-scale low-concentration tailing dry-discharging treatment and paste treatment combined treatment method |
-
2021
- 2021-10-28 CN CN202111263206.XA patent/CN113982683A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912865A (en) * | 2010-08-02 | 2010-12-15 | 河海大学 | Method for solidifying and dry-stacking mill tailings without tailing reservoir |
| CN102442808A (en) * | 2010-10-15 | 2012-05-09 | 中国矿业大学(北京) | All tailing cementing and discharging technology |
| CN105696518A (en) * | 2016-01-28 | 2016-06-22 | 中钢集团马鞍山矿山研究院有限公司 | Curing and dry heaping method for fine grained tailings |
| CN113217090A (en) * | 2021-03-19 | 2021-08-06 | 代县双立选厂 | Large-scale low-concentration tailing dry-discharging treatment and paste treatment combined treatment method |
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Application publication date: 20220128 |