CN106050260A - Non-stop production reconstruction method for tower-type external shaft hoisting system - Google Patents
Non-stop production reconstruction method for tower-type external shaft hoisting system Download PDFInfo
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- CN106050260A CN106050260A CN201610649131.1A CN201610649131A CN106050260A CN 106050260 A CN106050260 A CN 106050260A CN 201610649131 A CN201610649131 A CN 201610649131A CN 106050260 A CN106050260 A CN 106050260A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 238000012423 maintenance Methods 0.000 claims abstract description 5
- 230000009466 transformation Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000009418 renovation Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 5
- 230000001737 promoting effect Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- -1 coloured Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000007634 remodeling Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B17/00—Hoistway equipment
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Types And Forms Of Lifts (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The invention discloses a non-stop production reconstruction method for a tower-type external shaft hoisting system. The method comprises the steps that a new shaft tower framework (9) is constructed on the periphery of an original shaft tower (1), the upper portion, exceeding the tower top of the original shaft tower (1), of the new shaft tower framework (9) is reconstructed to be a closed new shaft tower upper framework body (1'), and a new guide wheel support platform (19) and a new hoister support platform (20) are constructed in the new shaft tower upper framework body (1') from bottom to top; a new traveling crane (8'), a new hoister (2'), a new electronic control system (4') and a new guide wheel (3') are installed and adjusted; an original hoister (2) and an original guide wheel (3) are removed or moved in maintenance or holiday time, steel wire ropes (15) of the new hoister (2') are connected with a hoisting container (5), in this way, renovation and reconstruction of the hoisting system are completed, and using of the original hoister (2) is stopped. According to the non-stop production reformation method for the tower-type external shaft hoisting system, an external shaft multi-rope friction wheel hoister used in normal production can be replaced on the condition that non-stop production of the external shaft is achieved, upgrading and reconstruction are conducted on the hoisting system, and the economic effect is obvious.
Description
Technical field
The present invention relates to the remodeling method of a kind of bright shaft hoisting system, particularly relate to a kind of tower bright shaft hoisting system
System remodeling method, can be at tower bright shaft hoisting system non-stop production reformations of underground mine such as iron and steel, coloured, gold, chemical industry, coals
Middle application.
Background technology
Bright shaft hoisting is widely used in the underground mine of the industry such as iron and steel, coloured, gold, chemical industry, coal, wherein many ropes
Friction pulley promotes, and can be divided into tower and console model lifting two kinds.
In China, there are many mines using frictional geared to promote, owing to the original elevator selected is less than normal, at pit shaft
After extension, original elevator can not meet safety requirements；Some mine, owing to original design hoisting power is less than normal, along with life
The development produced, need to strengthen hoisting power, then need change bigger skip bucket or single decker cage is replaced with two-deck(er) cage.Above
Situation, all refers to change increasing elevator, the problem promoting system.But utilize existing technical method, if wanted
Change elevator, then need pit shaft is stopped using a very long time, first existing equipment is removed, placing installation base the most again
Plinth beam, installation elevator, 1 year at least off-time, more than 1 year at most.But reality is, most mine, its
Lifting system is the project of primary importance in mine, it is impossible to stop production transformation for a long time, and therefore, bright vertical shaft multi rope winding seldom has renewal to change
Situation about making, major part be all newly dig well cylinder be updated transformation, cause investment substantial increase.
Chinese patent CN103967503A discloses a kind of tower interior shaft and promotes system non-stop production reformation method, carries former
Rising the L distance of the surface of machine chamber, one new lifting system improving machine chamber of new driving, in its underpart, excavation newly promotes system
Directive wheel chamber, promotes on system directive wheel chamber bottom plate rock pillar new, utilizes the some new lifting systems of rock drill down Drilling
Steel wire rope cord hole, and through with former elevator chamber top board, finally utilize maintenance or stop the not time, by former elevator and former guiding
Wheel removes displacement, is connected by newly promoting system ropes cord hole and hoisting container by the steel wire rope newly promoting system improving machine,
So, promoting system update and transformed, former elevator is stopped using.This patent can be right in the case of interior shaft does not stops production
The normal interior shaft multi-rope friction hoist produced is changed, thus lifting system is carried out upgrading.But the method is uncomfortable
Should be less than normal in the tower bright original lifting means of shaft hoisting system and need to change not the stopping of elevator to strengthen hoisting power
Produce transformation.
Summary of the invention
The purpose of the present invention is aiming at current tower bright shaft hoisting system and causes original carrying to solve shaft stretch
The equipment of liter is less than normal and needs to change elevator to strengthen hoisting power, but the one that can not stop production for a long time and propose is tower
Bright shaft hoisting system non-stop production reformation method.
For realizing the above-mentioned purpose of the present invention, a kind of tower bright shaft hoisting system non-stop production reformation method of the present invention uses
Techniques below scheme:
In former headframe building, be provided with former elevator, former directive wheel, former electric-control system and hoisting container, People's Bank of China's stair, elevator,
Former driving, the framework platform in former headframe building is provided with large equipment hole for hoist, elevator installing hole, People's Bank of China's stair hole and lifting
Steel wire rope passes through hole.Following steps are used to carry out non-stop production reformation:
1) needing between the tower bright shaft hoisting system normal production period of transformation, the L distance peripheral in former headframe building, newly construct
One new headframe building framework, described new headframe building frame height is after beyond former headframe building roof certain altitude M, and top is made into
Close new headframe portion's Framework Building upstairs, have from bottom to top in new headframe upstairs portion's Framework Building new directive wheel support platform,
New elevator support platform.
The big part being provided with on framework platform in new directive wheel support platform, new elevator support platform and former headframe building
Equipment hoisting hole, elevator installing hole, People's Bank of China's stair hole and boom hoist cable pass through the correspondence position up and down in hole, are respectively equipped with top
Pass through hole in equipment hoisting hole, upper elevator installing hole, top People's Bank of China stair hole, top boom hoist cable.
Described L distance basis, former headframe building will not be produced destruction with new headframe building frame foundation and convenient construction is
Principle, the smaller the better, and all directions L can take different value.
Described M distance is advisable with 0.5m～2m, former headframe building roof is carried out cutting operation determines for principle facilitating.
2), after at new headframe, upstairs portion's Framework Building is built up, former headframe building roof is installed with large equipment hole for hoist, elevator
Hole, People's Bank of China's stair hole and boom hoist cable pass through hole correspondence position up and down cut, People's Bank of China's stair are continued up extension install
To Shang Yan People's Bank of China stair position, described Shang Yan People's Bank of China stair are inclined and mounted on new directive wheel support platform, new elevator supports
Between platform；Elevator is moved up by elevator installing hole, upper elevator installing hole respectively and is installed to new elevator and supports flat
Upper shifting elevator is become on platform.
3), after above-mentioned work completes, new driving, new elevator and new electric-control system, the installation of new directive wheel, debugging are started；
New driving is arranged on the top in new headframe portion's Framework Building upstairs, and new directive wheel is arranged in new directive wheel support platform, newly carries
The machine of liter is arranged in new elevator support platform, and new electric-control system is arranged in new directive wheel support platform；
4) finally utilize maintenance or holiday time, former elevator and former directive wheel are removed displacement, by the steel wire of new elevator
Rope and hoisting container connect, and so, promote system update and have transformed, and former elevator is stopped using.
The size of above-mentioned L, M does not limits, according to building and installing setting of safety, construction cost and installation space size
Meter requires specifically to determine.
For making structure stress more reasonable, described new headframe building framework is to be combined by frame column, Vierendeel girder and tie-beam
Constitute, frame column is vertically mounted on ground, and Vierendeel girder is horizontally arranged on frame column, tie-beam be horizontally arranged at frame column with
Between former headframe building.If construction does not affect existing production, tie-beam can be crossed former headframe building and the framework of opposite side
Beam connects.
Described new headframe building frame column, Vierendeel girder and the quantity of tie-beam, highly, position, specification, size etc. do not limit,
The sequencing of part retrofit work does not limits.
After a kind of tower bright shaft hoisting system non-stop production reformation method of the present invention uses above technical scheme, have following
Beneficial effect: in the case of bright vertical shaft does not stops production, the normal bright vertical shaft multi-rope friction hoist produced can be changed, thus
Lifting system is carried out upgrading.
Main advantages of the present invention: avoid mine and can not stop production replacing lifting means because promoting bright vertical shaft, and have to
New pick promotes pit shaft separately, or lifting system update transformation must stop production for a long time and affect the situation of mine economic profit, economical
Effect is obvious.
Accompanying drawing explanation
Fig. 1 be a kind of tower bright shaft hoisting system non-stop production reformation method of the present invention the lifting system reform before and after section
Schematic diagram；
Fig. 2 is the lifting system reform anterior-posterior plane schematic diagram of a kind of tower bright shaft hoisting system non-stop production reformation method of the present invention.
Reference is:
1-former headframe building；1 '-new headframe portion's Framework Building upstairs；The former elevator of 2-；2 '-new elevator；The former directive wheel of 3-；
3 '-new directive wheel；The former electric-control system of 4-；4 '-new electric-control system；5-hoisting container；6-protoplast's row stair；6 '-above prolong
People's Bank of China's stair；7-elevator；7 '-above move elevator；The former driving of 8-；8 '-newly drive a vehicle；9-new headframe building framework；The former headframe of 10-
Building roof；11-equipment hoisting hole；Equipment hoisting hole, 11 '-top；12-elevator installing hole；12 '-upper elevator installing hole；
13-People's Bank of China stair hole；13 '-top People's Bank of China stair hole；14-boom hoist cable passes through hole；14 '-top boom hoist cable leads to
Row hole；15-steel wire rope；16-frame column；17-Vierendeel girder；18-tie-beam；19-new directive wheel support platform；20-newly carries
Rise machine support platform.
Detailed description of the invention
For further describing the present invention, tower bright shaft hoisting system a kind of to the present invention with embodiment below in conjunction with the accompanying drawings
Non-stop production reformation method is described in further details.
Before and after a kind of tower bright shaft hoisting system non-stop production reformation method of the present invention as shown in Figure 1 promotes the system reform
Generalized section also combines Fig. 2 and finds out, a kind of tower bright shaft hoisting system non-stop production reformation method of the present invention, in former headframe building
In 1, former elevator 2, former directive wheel 3, former electric-control system 4 and hoisting container 5, People's Bank of China's stair 6, elevator 7, former driving 8 are installed,
It is provided with large equipment hole for hoist 11, elevator installing hole 12, People's Bank of China's stair hole 13 on framework platform in former headframe building 1 and promotes
Steel wire rope passes through hole 14.Following steps are used to carry out non-stop production reformation:
1) needing between the tower bright shaft hoisting system normal production period of transformation, in the periphery in former headframe building 1, new construction one
New headframe building framework 9, described new headframe building framework 9 height is after beyond former headframe building 1 roof, and the new well closed is made on top into
High building upper frame building 1 ', interior has new directive wheel support platform 19 from bottom to top at new headframe portion's Framework Building 1 ' upstairs, newly carries
Rise machine support platform 20.
Described new headframe building framework 9 is to be combined by frame column 16, Vierendeel girder 17 and tie-beam 18 to constitute, and frame column 16 hangs down
Directly being arranged on ground, Vierendeel girder 17 is horizontally arranged on frame column 16, and tie-beam 18 is horizontally arranged at frame column 16 and Yuan Jing
Between high building 1.If construction does not affect existing production, tie-beam 18 also can highly cross former headframe building 1 and right at certain
Marginal frame beam 17 connects.
At new directive wheel support platform 19, new elevator support platform 20 and large equipment hole for hoist 11, elevator installing hole
12, People's Bank of China's stair hole 13 and boom hoist cable pass through the correspondence position up and down in hole 14, be respectively equipped with equipment hoisting hole, top 11 ',
Upper elevator installing hole 12 ', top People's Bank of China stair hole 13 ', top boom hoist cable pass through hole 14 '.
2) by former headframe building roof 10 and large equipment hole for hoist 11, elevator installing hole 12, People's Bank of China's stair hole 13 and lifting
Steel wire rope pass through hole 14 correspondence position up and down cut, People's Bank of China's stair 6 are continued up extension and are installed to Shang Yan People's Bank of China stair 6 '
Position, described Shang Yan People's Bank of China stair 6 ' are inclined and mounted between new directive wheel support platform 19, new elevator support platform 20；
Elevator 7 is moved up be installed in new elevator support platform by elevator installing hole 12, upper elevator installing hole 12 ' respectively
Become upper shifting elevator 7 '.
3), after above-mentioned work completes, new driving 8 ', new elevator 2 ' and new electric-control system 4 ', the peace of new directive wheel 3 ' are started
Dress, debugging；New driving 8 ' is arranged on the new headframe top that upstairs portion's Framework Building 1 ' is interior, and new directive wheel 3 ' is arranged on new directive wheel and props up
On support platform 19, new elevator 2 ' is arranged in new elevator support platform 20, and new electric-control system 4 ' is arranged on new directive wheel and props up
On support platform 19；
4) finally utilize maintenance or holiday time, former elevator 2 and former directive wheel 3 are removed displacement, by new elevator 2 '
Steel wire rope 15 and hoisting container 5 connect, and so, promote system update and have transformed, and former elevator 2 is stopped using.
Claims (3)
1. a tower bright shaft hoisting system non-stop production reformation method, in former headframe building (1), be provided with former elevator (2),
Former directive wheel (3), former electric-control system (4) and hoisting container (5), People's Bank of China's stair (6), elevator (7), former driving (8), at former headframe
Framework platform in building (1) is provided with large equipment hole for hoist (11), elevator installing hole (12), People's Bank of China's stair hole (13) and promotes
Steel wire rope passes through hole (14), it is characterised in that use following steps to carry out non-stop production reformation:
1) needing between the tower bright shaft hoisting system normal production period of transformation, in the periphery of former headframe building (1), newly constructing one
Individual new headframe building framework (9), described new headframe building framework (9) height is after beyond former headframe building (1) roof, and envelope is made on top into
The new headframe closed portion's Framework Building (1 ') upstairs, has new directive wheel in new headframe upstairs portion's Framework Building (1 ') from bottom to top and supports
Platform (19), new elevator support platform (20)；
Install with large equipment hole for hoist (11), elevator in new directive wheel support platform (19), new elevator support platform (20)
Hole (12), People's Bank of China's stair hole (13) and boom hoist cable pass through the correspondence position up and down in hole (14), are respectively equipped with top equipment and hang
Dress hole (11 '), upper elevator installing hole (12 '), top People's Bank of China stair hole (13 '), top boom hoist cable pass through hole (14 ')；
2) by former headframe building roof (10) and large equipment hole for hoist (11), elevator installing hole (12), People's Bank of China's stair hole (13) and
Boom hoist cable pass through hole (14) correspondence position up and down cut, People's Bank of China's stair (6) are continued up extension and are installed to prolong people
Row stair (6 ') position, described Shang Yan People's Bank of China stair (6 ') is inclined and mounted on new directive wheel support platform (19), new elevator
Between support platform (20)；Elevator (7) is moved up by elevator installing hole (12), upper elevator installing hole (12 ') respectively
It is installed in new elevator support platform become upper shifting elevator (7 ')；
3), after above-mentioned work completes, new driving (8 '), new elevator (2 ') and new electric-control system (4 '), new directive wheel (3 ') are started
Installation, debugging；New driving (8 ') is arranged on the top in new headframe portion's Framework Building (1 ') upstairs, and new directive wheel (3 ') is arranged on
In new directive wheel support platform (19), new elevator (2 ') is arranged on new elevator support platform (20), new electric-control system
(4 ') are arranged on new directive wheel support platform (19)；
4) finally utilize maintenance or holiday time, former elevator (2) and former directive wheel (3) are removed displacement, by new elevator
The steel wire rope (15) of (2 ') and hoisting container (5) connect, and so, promote system update and have transformed, and former elevator (2) stops making
With.
2. a kind of tower bright shaft hoisting system non-stop production reformation method as claimed in claim 1, it is characterised in that: described
New headframe building framework (9) is to be combined by frame column (16), Vierendeel girder (17) and tie-beam (18) to constitute, and frame column (16) is vertically pacified
Being contained on ground, Vierendeel girder (17) is horizontally arranged on frame column (16), tie-beam (18) be horizontally arranged at frame column (16) with
Between former headframe building (1).
A kind of tower bright shaft hoisting the most as claimed in claim 1 changes the non-stop production reformation method that console model promotes, its feature
It is: described new headframe building framework (9) is to be combined by frame column (16), Vierendeel girder (17) and tie-beam (18) to constitute, framework
Post (16) is vertically mounted on ground, and Vierendeel girder (17) is horizontally arranged on frame column (16), and tie-beam (18) crosses former headframe
The Vierendeel girder (17) of building (1) and opposite side connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610649131.1A CN106050260B (en) | 2016-08-10 | 2016-08-10 | A kind of tower bright shaft hoisting system non-stop production reformation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610649131.1A CN106050260B (en) | 2016-08-10 | 2016-08-10 | A kind of tower bright shaft hoisting system non-stop production reformation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106050260A true CN106050260A (en) | 2016-10-26 |
| CN106050260B CN106050260B (en) | 2018-11-16 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610649131.1A Active CN106050260B (en) | 2016-08-10 | 2016-08-10 | A kind of tower bright shaft hoisting system non-stop production reformation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109353925A (en) * | 2018-11-12 | 2019-02-19 | 中国恩菲工程技术有限公司 | Console mode head sheave chamber and console mode lifting system |
| CN113833471A (en) * | 2021-09-06 | 2021-12-24 | 中国华冶科工集团有限公司 | Method for transforming skip well into basic construction mixed well |
| CN114476907A (en) * | 2022-02-11 | 2022-05-13 | 中钢集团马鞍山矿山研究总院股份有限公司 | Non-stop production transformation method for changing single-rope winding type lifting system of exposed shaft into multi-rope floor type lifting system |
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| KR100984883B1 (en) * | 2009-05-22 | 2010-10-01 | 위성배 | The construction method of shield tunneling |
| CN103964284A (en) * | 2014-05-07 | 2014-08-06 | 中钢集团马鞍山矿山研究院有限公司 | Non-production-stopping modifying method for hoisting system with multi-rope friction pulley for hoisting internal shaft |
| CN103967503A (en) * | 2014-05-07 | 2014-08-06 | 中钢集团马鞍山矿山研究院有限公司 | Production-stop-free transformation method for tower type interior shaft elevating system |
| CN103964285A (en) * | 2014-05-07 | 2014-08-06 | 中钢集团马鞍山矿山研究院有限公司 | Interior shaft hoisting system on-line improvement method for changing multi-rope floor type into tower type |
| WO2014161379A1 (en) * | 2013-04-03 | 2014-10-09 | 中国矿业大学 | Guide rail rope deflection inhibition mechanism and method for parallel soft cable suspension system |
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2016
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100984883B1 (en) * | 2009-05-22 | 2010-10-01 | 위성배 | The construction method of shield tunneling |
| WO2014161379A1 (en) * | 2013-04-03 | 2014-10-09 | 中国矿业大学 | Guide rail rope deflection inhibition mechanism and method for parallel soft cable suspension system |
| CN103964284A (en) * | 2014-05-07 | 2014-08-06 | 中钢集团马鞍山矿山研究院有限公司 | Non-production-stopping modifying method for hoisting system with multi-rope friction pulley for hoisting internal shaft |
| CN103967503A (en) * | 2014-05-07 | 2014-08-06 | 中钢集团马鞍山矿山研究院有限公司 | Production-stop-free transformation method for tower type interior shaft elevating system |
| CN103964285A (en) * | 2014-05-07 | 2014-08-06 | 中钢集团马鞍山矿山研究院有限公司 | Interior shaft hoisting system on-line improvement method for changing multi-rope floor type into tower type |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109353925A (en) * | 2018-11-12 | 2019-02-19 | 中国恩菲工程技术有限公司 | Console mode head sheave chamber and console mode lifting system |
| CN113833471A (en) * | 2021-09-06 | 2021-12-24 | 中国华冶科工集团有限公司 | Method for transforming skip well into basic construction mixed well |
| CN113833471B (en) * | 2021-09-06 | 2023-08-22 | 中国华冶科工集团有限公司 | Method for reforming skip well into basic construction mixing well |
| CN114476907A (en) * | 2022-02-11 | 2022-05-13 | 中钢集团马鞍山矿山研究总院股份有限公司 | Non-stop production transformation method for changing single-rope winding type lifting system of exposed shaft into multi-rope floor type lifting system |
| CN114476907B (en) * | 2022-02-11 | 2024-01-12 | 中钢集团马鞍山矿山研究总院股份有限公司 | Non-stop production reconstruction method for open shaft lifting system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106050260B (en) | 2018-11-16 |
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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 Xitang Road, Ma'anshan Economic Development Zone, Anhui, No. 666 Patentee before: SINOSTEEL MAANSHAN INSTITUTE OF MINING RESEARCH Co.,Ltd. |