CN104784982A - Energy-saving deep-cone thickener applicable to fine-grained tailing disposal - Google Patents
Energy-saving deep-cone thickener applicable to fine-grained tailing disposal Download PDFInfo
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- CN104784982A CN104784982A CN201510159703.3A CN201510159703A CN104784982A CN 104784982 A CN104784982 A CN 104784982A CN 201510159703 A CN201510159703 A CN 201510159703A CN 104784982 A CN104784982 A CN 104784982A
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- 239000002562 thickening agent Substances 0.000 title claims abstract description 37
- 230000008719 thickening Effects 0.000 claims abstract description 5
- 230000007246 mechanism Effects 0.000 claims description 5
- 239000000523 sample Substances 0.000 claims description 3
- 239000004576 sand Substances 0.000 abstract description 9
- 238000007599 discharging Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000004913 activation Effects 0.000 abstract description 2
- 239000006210 lotion Substances 0.000 description 8
- 239000002002 slurry Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 238000005065 mining Methods 0.000 description 5
- 238000004062 sedimentation Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004537 pulping Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The invention discloses an energy-saving deep-cone thickener applicable to fine-grained tailing disposal. The energy-saving deep-cone thickener is formed by combining a sand feeding pipe (2), a barrel, an overflow pipe (3), an ore pulp valve (6) and a sand discharging pipe (7), wherein the sand feeding pipe (2) is inserted in the center of the upper part of the barrel, the sand discharging pipe (7) is communicated with the bottom of the barrel, the ore pulp valve (6) is mounted on the sand discharging pipe (7), the barrel is formed by combining an upper barrel (1) and a lower barrel (8), the upper barrel (1) is formed by combining an upper large-diameter cylinder and a lower inverted-circular-truncated-cone-shaped barrel, the lower barrel (8) is formed by combining an upper small-diameter cylinder and a lower cone, the diameter ratio of the large-diameter cylinder to the small-diameter cylinder is in a range of (2-6):1, the height ratio of the large-diameter cylinder to the small-diameter cylinder is in a range of 1:(1.5-5), and the height ratio of the upper barrel (1) to the lower barrel (8) is in a range of 2:(2.5-4). The energy-saving deep-cone thickener integrates multiple technologies of a deep-cone thickener, a common sand silo and thickening activation, when the energy-saving deep-cone thickener is applied to tailing filling or tailing dry-heaping, land can be saved by 20%, energy can be saved by 35%, the investment can be reduced by 25%, the operating cost can be reduced by 15%, and the weight concentration of discharged tailing pulp is in a range of 70%-80%.
Description
Technical field
The invention belongs to tailings glass and solid-liquid separation technique field, be specifically related to a kind of efficient deep cone thickener, be particularly suitable for applying in the underground filling of fine tailings and tailing dry-heaping and solidification utilizing works.
Background technology
China is mining powers, but the grade of most of mine resources is lower, discharges a large amount of mine tailings in beneficiation flowsheet, along with the raising of mineral resource utilization degree, ore can the corresponding reduction of mining grade, mine tailing generation is also in increase.Therefore, tailings glass is the important step of mining production.In recent years, under the pressure of environment and safe pressure, reduce the impact on earth's surface buildings or structures, reduce the generation of geological disaster, realize the target of Green Mine, environmental protection mine, exploration without waster, most underground mine adopts the mine tailing method of mining by the way of filling.
Before mine tailing filling, tailing dry-heaping and Tailings utilization, thickening must be carried out to this extremely rare saturated fine tailings.Current dewatering has thickener, Sha Cang, filter or filter press etc., and the defect of these conventional methods is that floor space is large, efficiency is low, energy consumption is high, cost is high.With regard to concentrator, the equipment sold in the market and apply has peripheral traction thickener, efficient deep cone thickener, vibrations hang plate high-efficiency concentrator, hydraulic pressure center driving high-efficiency concentrator etc., " efficient deep wimble thickener selects the application of factory at Mei Shan " literary composition as delivered " mining industry bulletin " in March, 2007 describes the efficient deep wimble thickener of a kind of 25mHRC type, driven type centered by the efficient deep wimble thickener structure of HRC25-HP.Main transmission is low rotation speed large torque worm speed reducer; Housing is armored concrete overhead system elastic construction, adopts dark cone heavy grade armored concrete self waterproof structure.Its main operational principle is the feed box energy dissipating that material feeds on the crane span structure of concentrator top, is fed the feedwell of concentrator by hopper, and flocculates with flocculant mixing, the sedimentation in concentrator under gravity of the material after flocculation.After efficient deep wimble thickener comes into operation, true tailings concentration can reach 45 more than %, compared with before applying, can improve concentration 10 ~ 15 percentage points with high pressure thickener; Compared with before High efficient Revamp, concentration 15 ~ 19 percentage points can be improved.But the underflow pulp density of this efficient deep wimble thickener is at about 45 %, needs in underground filling and tailing dry-heaping and solidification utilizing works cannot be met and tailings concentration is concentrated to the demand of more than 70%.
In order to improve the concentration after Tailing thickening, dehydration further, Chinese patent application 201310396047.X discloses a kind of Efficient deep cone thickener, comprise body, agitator, described agitator is arranged on the center of body, and described agitator is connected with transmission device, and described body is made up of cylinder section and cone section two parts, described cylinder section top is provided with overflow launder, bottom is provided with hang plate, and side is connected with feeding pipe, is provided with underflow pipe and jet water spout bottom described cone section.Feature of the present invention is: structure is simple, and floor space is little, and disposal ability is large, utilizes the natural pressure of dark cone can obtain more peace and quiet overflow and the underflow of high concentration.But this thickener and traditional thickener similar, also need to set up center to stir transmission device, and complex structure, cost is high, energy resource consumption is high, use cost is high.
Summary of the invention
Object of the present invention, be exactly the problems referred to above existed for prior art, and the energy-saving deep cone thickener being suitable for fine tailings disposal that a kind of structure is simple, low cost of manufacture, floor space are little, energy consumption is extremely low, operating cost is low, thickening efficiency is high is provided.
For realizing above-mentioned purpose of the present invention, a kind of energy-saving deep cone thickener being suitable for fine tailings disposal of the present invention realizes by the following technical solutions:
A kind of energy-saving deep cone thickener being suitable for fine tailings and disposing of the present invention, be by give sandpipe, cylindrical shell, overflow pipe, ore pulp valve, put sandpipe combine form, the center on cylindrical shell top is inserted into sandpipe, the cannelure UNICOM on overflow pipe and cylindrical shell top, put the bottom UNICOM of sandpipe and cylindrical shell, ore pulp valve is arranged on to be put on sandpipe, and ore pulp valve is cut-off and the switch controlling lotion uninterrupted.High concentration Total tailing is become to starch or lotion for the Total tailing of middle low concentration slurry being concentrated continuously, efficiently, at low cost densification, barrel designs is become the variable cross-section cylindrical shell with certain size and volume and the truncated cone shape combining structure of a upper big, lower small, that is: described cylindrical shell is combined by upper shell, lower shell and forms, upper shell is combined by top large diameter cylinder and bottom rounding mesa-shaped cylindrical shell and forms, and lower shell is combined by top small diameter cylinder and lower cone body and forms.The diameter ratio of described large diameter cylinder, small diameter cylinder is with (2 ~ 6): 1 is advisable, with (2 ~ 4): 1 scope is good; Described large diameter cylinder, the aspect ratio of small diameter cylinder are with 1:(1.5 ~ 5) be advisable, with 1:(2 ~ 4) scope is good; The height of described upper shell and the aspect ratio of lower shell are 2:(2.5 ~ 4), with 2:(2.8 ~ 3.2) for good.
In the cone of lower shell, deposit blocking underflow for preventing Concentrated tailings slurry and put sandpipe, the present invention is also provided with at the lower cone body side surface of lower shell and thickens anti-block apparatus; For the pressure gauge of the pore water pressure size of Tailings Pulp in the lower cone body of measurement, display lower shell, manometric probe is arranged in the slurry of cone.
The described anti-block apparatus that thickens is the controlled pipeline mechanism of pressure, direction and flow.The present invention changes existing mine tailing filling thickener or CHARACTERISTICS OF TAILINGS SAND storehouse consumes traditional behindhand type that a large amount of power pulping puts sand, newly establishes mine tailing (lotion) to thicken anti-block apparatus, guarantees that continuous flow by gravity releases Total tailing slurry (lotion) of high concentration.
In order in time, solve Concentrated tailings slurry rapidly deposit blockage problem in the cone of lower shell, the present invention is also provided with for opening and closing automatically ore pulp valve, thicken anti-block apparatus and ore pulp valve can be controlled, the valve opening size thickened on anti-block apparatus thicken anti-blocking automatic control system.
After a kind of energy-saving deep cone thickener being suitable for fine tailings disposal of the present invention adopts above technical scheme, there is following good effect:
Depth of field cone concentration machine of the present invention, normal sands storehouse and thicken activation many technology in one, adopt the dehydration of saturated mine tailing continuous concentration, storage, flow by gravity various functions in new, the up big and down small T-type structure cylindrical shell (sand storehouse) of one, drastically reduce the area power pulping, and avoid Tailings Pulp deposit in cone blocking and plugging phenomenon, realize Concentrated tailings slurry (lotion) uniformly continous gravity flow.Whole device all adopts gravity flow, does not have the mud scraper tool transmission device of existing thickener, can save land 20%, energy-conservation 35% for the filling of metallurgical mine mine tailing or tailing dry-heaping, and investment minimizing 25%, running cost reduces by 15%.
Facts have proved, Tailings Pulp after concentrating clarifying of the present invention, sedimentation, compression, the weight concentration of the Tailings Pulp (lotion) of discharging from underflow up to 70% ~ 80%, volumetric concentration up to 46% ~ 60%, annual average weight concentration is up to 75%.
The present invention is a kind of to be suitable for the energy-saving deep cone thickener that fine tailings disposes and to enter into upper shell at Tailings Pulp from feeding to sandpipe, and in body concentrating clarifying, sedimentation, compression until from putting whole process that sandpipe discharges, not consumption of power.Up to the present, the thickener not establishing peripheral-traction or center transmission mechanism and rabbling mechanism is not also found.
Accompanying drawing explanation
Fig. 1 is a kind of energy-saving deep cone thickener structural representation being suitable for fine tailings and disposing of the present invention.
Fig. 2 be the present invention adopt thicken anti-blocking automatic control system principle schematic.
Reference numeral is: 1-upper shell, and 2-is to sandpipe, and 3-overflow pipe, 4-thickens anti-block apparatus, 5-pressure gauge, 6-ore pulp valve, and 7-puts sandpipe, 8-lower shell, and 9-thickens anti-blocking automatic control system, Ф
1the top large diameter cylinder diameter of-upper shell 1, Ф
2the top small diameter cylinder diameter of-lower shell 8, h
1the top large diameter cylinder height of-upper shell 1, h
2the bottom inverted round stage shape cylindrical shell height of-upper shell 1, h
3the top small diameter cylinder height of-lower shell 8, h
4the bottom cone height of-lower shell 8.
Detailed description of the invention
For further describing the present invention, below in conjunction with accompanying drawing, a kind of energy-saving deep cone thickener being suitable for fine tailings disposal of the present invention is described in further detail.
A kind of energy-saving deep cone thickener structural representation being suitable for fine tailings disposal of the present invention is as shown in Figure 1 found out, the present invention is a kind of is suitable for the energy-saving deep cone thickener that fine tailings disposes, be by sandpipe 2, cylindrical shell, overflow pipe 3, ore pulp valve 6, put sandpipe 7 and combine and form; To the back cover steel pipe that sandpipe 2 is for lower wall perforate, overflow pipe 3 is common steel tube or plastic tube, and ore pulp valve 6 is cut-off and the switch controlling lotion uninterrupted; Putting sandpipe 7 is that the steel pipe of variable cross-section forms; Be inserted into the center on cylindrical shell top to sandpipe 2, overflow pipe 3 is arranged on the cannelure UNICOM ore pulp valve 6 on cylindrical shell top and puts on sandpipe 7.Described cylindrical shell is the variable cross-section cylindrical shell with certain size and volume of a upper big, lower small and the T-type structure of truncated cone shape combination, that is: cylindrical shell is combined by upper shell 1, lower shell 8 and forms, upper shell 1 is combined by top large diameter cylinder and bottom rounding mesa-shaped cylindrical shell and forms, lower shell 8 is combined by top small diameter cylinder and lower cone body and forms, and puts UNICOM bottom sandpipe 7 and the lower cone body of lower shell 8.Also be provided with in the lower cone body bottom side of described lower shell 8 and thicken anti-block apparatus 4 and pressure gauge 5, the probe of pressure gauge 5 is arranged in the Tailings Pulp of cone.The described anti-block apparatus 4 that thickens is the controlled pipeline mechanism of pressure, direction and flow.Pressure gauge 5 is the instrument measuring, show the pore water pressure size of Tailings Pulp in lower cone body.
Under normal circumstances, described large diameter cylinder, the diameter of small diameter cylinder compare Ф
1: Ф
2=(2 ~ 4): 1; Described large diameter cylinder, the aspect ratio h of small diameter cylinder
1: h
3=1:(2 ~ 4); Height (the h of described upper shell 1
1+ h
2) with the height (h of lower shell 8
3+ h
4) than being 2:(2.8 ~ 3.2).Concrete structure parameter is determined according to the physicochemical properties of different mine tailing (tailings), sedimentation concentration result of the test and production capacity size.
When processing-0.074mm content>=80%(wherein-0.037mm content >50% in feed), weight concentration is when being the Tailings Pulp of 25% ~ 40%, the structural parameters of its optimum are: described large diameter cylinder, the diameter of small diameter cylinder compare Ф
1: Ф
2=(2.8 ~ 3.2); Described large diameter cylinder, the aspect ratio of small diameter cylinder are 1:(2.1 ~ 2.5), the height (h of described upper shell 1
1+ h
2) with the height (h of lower shell 8
3+ h
4) than being 1:(1.5 ~ 1.6), now, from putting the mine tailing weight concentration of discharge sandpipe 7 up to 81.2%, do not occur affecting production phenomenon because of blocking, and the overflow water of discharging from overflow pipe 3 is limpid, all uses as ore dressing plant feedwater.
The anti-blocking automatic control system principle schematic that thickens that the present invention as shown in Figure 2 adopts is found out, the present invention also containing being used for opening and closing automatically ore pulp valve 6, thicken anti-block apparatus 4 and ore pulp valve 6 can be controlled, the valve opening size thickened on anti-block apparatus 4 thicken anti-blocking automatic control system 9.Thicken anti-block apparatus 4, pressure gauge 5, ore pulp valve 6 respectively with thicken anti-blocking automatic control system 9 and be associated.
In actual use, the fine tailings of middle low concentration is by flowing into the center on cylindrical shell top, mine tailing sedimentation in the cylindrical shell of T-type structure, densification to sandpipe 2, clear water flows into overflow pipe 3 by the cannelure on cylindrical shell top and uses as backwater; High-concentration tailings slurry or lotion are by bottom the lower cone body of lower shell 8 and through ore pulp valve 6 with put sandpipe 7 and flow out, for filling in mine or tailing dry-heaping etc.; When mine tailing overrich produces blocking bottom the lower cone body of lower shell 8, then start and thicken anti-block apparatus 4 several seconds.Bottom the lower cone body of lower shell 8, mine tailing overrich generation blockage problem can determine to start the opportunity and time that thicken anti-block apparatus 4 by the pore water pressure numerical value according to pressure gauge 5.
Claims (5)
1. the energy-saving deep cone thickener being suitable for fine tailings and disposing, be by give sandpipe (2), cylindrical shell, overflow pipe (3), ore pulp valve (6), put sandpipe (7) combination to form, the center on cylindrical shell top is inserted into sandpipe (2), the cannelure UNICOM on overflow pipe (3) and cylindrical shell top, put the bottom UNICOM of sandpipe (7) and cylindrical shell, ore pulp valve (6) is arranged on to be put on sandpipe (7), it is characterized in that: described cylindrical shell is by upper shell (1), lower shell (8) combination is formed, upper shell (1) is combined by top large diameter cylinder and bottom rounding mesa-shaped cylindrical shell and forms, lower shell (8) is combined by top small diameter cylinder and lower cone body and forms, described large diameter cylinder, the diameter of small diameter cylinder compares Ф
1: Ф
2=(2 ~ 6): 1, described large diameter cylinder, the aspect ratio h of small diameter cylinder
1: h
3=1:(1.5 ~ 4), the height (h of described upper shell (1)
1+ h
2) with the height (h of lower shell (8)
3+ h
4) than being 2:(2.5 ~ 4).
2. as claimed in claim 1 a kind of be suitable for fine tailings dispose energy-saving deep cone thickener, it is characterized in that: described large diameter cylinder, the diameter of small diameter cylinder compare Ф
1: Ф
2=(2 ~ 4): 1, described large diameter cylinder, the aspect ratio h of small diameter cylinder
1: h
3=1:(2 ~ 4), the height (h of described upper shell (1)
1+ h
2) with the height (h of lower shell (8)
3+ h
4) than being 2:(2.8 ~ 3.2).
3. as claimed in claim 1 or 2 a kind of be suitable for fine tailings dispose energy-saving deep cone thickener, it is characterized in that: be also provided with in the lower cone body bottom side of described lower shell (8) and thicken anti-block apparatus (4) and pressure gauge (5), the probe of pressure gauge (5) is arranged in the Tailings Pulp of cone.
4. a kind of energy-saving deep cone thickener being suitable for fine tailings and disposing as claimed in claim 3, is characterized in that: anti-block apparatus (4) is pressure in described thickening, direction and the controlled pipeline mechanism of flow.
5. a kind of energy-saving deep cone thickener being suitable for fine tailings and disposing as claimed in claim 3, is characterized in that: it also containing being used for opening and closing automatically ore pulp valve (6), thicken anti-block apparatus (4) and ore pulp valve (6) can be controlled, the valve opening size thickened on anti-block apparatus (4) thicken anti-blocking automatic control system (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510159703.3A CN104784982B (en) | 2015-04-07 | 2015-04-07 | A kind of energy-saving deep cone thickener being suitable to fine granularity Tailings Disposal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510159703.3A CN104784982B (en) | 2015-04-07 | 2015-04-07 | A kind of energy-saving deep cone thickener being suitable to fine granularity Tailings Disposal |
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| Publication Number | Publication Date |
|---|---|
| CN104784982A true CN104784982A (en) | 2015-07-22 |
| CN104784982B CN104784982B (en) | 2016-08-17 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104971524A (en) * | 2015-07-24 | 2015-10-14 | 北京科技大学 | Paste thickener bottom flow circulation homogenizing device |
| CN106039783A (en) * | 2016-08-03 | 2016-10-26 | 山东华联矿业股份有限公司 | Gravity unclassified tailings concentration dehydration apparatus |
| CN106139651A (en) * | 2016-08-31 | 2016-11-23 | 郑州中绿环保新材料有限公司 | A kind of high-efficiency sedimentation device |
| CN108643964A (en) * | 2018-07-10 | 2018-10-12 | 长沙矿山研究院有限责任公司 | Cyclone energy dissipation by hydraulic jump device and energy dissipating method in a kind of classified tailings filling system |
| CN112121471A (en) * | 2020-08-10 | 2020-12-25 | 长沙有色冶金设计研究院有限公司 | Method and system for determining optimal thickening mode of differential full tailings |
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| KR101458339B1 (en) * | 2014-02-04 | 2014-11-04 | 주식회사 에코프라임 | Hopper for sludge precipitation process |
| CN203935646U (en) * | 2014-03-05 | 2014-11-12 | 山东科技大学 | A kind of pillar Hhigh-efficient thickener |
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2015
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Patent Citations (4)
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| CN2255301Y (en) * | 1995-10-05 | 1997-06-04 | 电力工业部电力建设研究所 | High-efficient rake-free mortar concentrating device |
| CN202654759U (en) * | 2012-07-10 | 2013-01-09 | 马际印 | Deep-cone thickener |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104971524A (en) * | 2015-07-24 | 2015-10-14 | 北京科技大学 | Paste thickener bottom flow circulation homogenizing device |
| CN106039783A (en) * | 2016-08-03 | 2016-10-26 | 山东华联矿业股份有限公司 | Gravity unclassified tailings concentration dehydration apparatus |
| CN106139651A (en) * | 2016-08-31 | 2016-11-23 | 郑州中绿环保新材料有限公司 | A kind of high-efficiency sedimentation device |
| CN106139651B (en) * | 2016-08-31 | 2018-11-23 | 湖南绿脉环保科技有限公司 | A kind of high-efficiency sedimentation device |
| CN108643964A (en) * | 2018-07-10 | 2018-10-12 | 长沙矿山研究院有限责任公司 | Cyclone energy dissipation by hydraulic jump device and energy dissipating method in a kind of classified tailings filling system |
| CN108643964B (en) * | 2018-07-10 | 2023-12-22 | 长沙矿山研究院有限责任公司 | Cyclone underflow energy dissipater in graded tailing filling system and energy dissipation method |
| CN112121471A (en) * | 2020-08-10 | 2020-12-25 | 长沙有色冶金设计研究院有限公司 | Method and system for determining optimal thickening mode of differential full tailings |
| CN112121471B (en) * | 2020-08-10 | 2021-10-12 | 长沙有色冶金设计研究院有限公司 | Method and system for determining optimal thickening mode of differential full tailings |
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| CN104784982B (en) | 2016-08-17 |
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Address after: 243000 Xitang Road, Ma'anshan Economic Development Zone, Anhui, No. 666 Patentee after: MAANSHAN Mine Research Institute Co.,Ltd. Address before: 243000 No. 666, Xitang Road, Ma'anshan economic and Technological Development Zone, Anhui, China Patentee before: SINOSTEEL MAANSHAN INSTITUTE OF MINING RESEARCH Co.,Ltd. |
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| CP03 | Change of name, title or address |