CN110530219A - A kind of control blasting method reducing loss and dilution - Google Patents
A kind of control blasting method reducing loss and dilution Download PDFInfo
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- CN110530219A CN110530219A CN201910839670.5A CN201910839670A CN110530219A CN 110530219 A CN110530219 A CN 110530219A CN 201910839670 A CN201910839670 A CN 201910839670A CN 110530219 A CN110530219 A CN 110530219A
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- 238000005422 blasting Methods 0.000 title claims abstract description 85
- 238000010790 dilution Methods 0.000 title claims abstract description 40
- 239000012895 dilution Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 40
- 239000011435 rock Substances 0.000 claims abstract description 100
- 230000004069 differentiation Effects 0.000 claims abstract description 25
- 238000004880 explosion Methods 0.000 claims abstract description 14
- 239000002360 explosive Substances 0.000 claims description 23
- 239000000843 powder Substances 0.000 claims description 10
- 244000025254 Cannabis sativa Species 0.000 claims description 6
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 claims description 6
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 claims description 6
- 235000009120 camo Nutrition 0.000 claims description 6
- 235000005607 chanvre indien Nutrition 0.000 claims description 6
- 239000011487 hemp Substances 0.000 claims description 6
- 238000005474 detonation Methods 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 3
- 239000000839 emulsion Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000005065 mining Methods 0.000 abstract description 6
- 238000012856 packing Methods 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 abstract description 3
- 238000007598 dipping method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000000977 initiatory effect Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- WUUZKBJEUBFVMV-UHFFFAOYSA-N copper molybdenum Chemical compound [Cu].[Mo] WUUZKBJEUBFVMV-UHFFFAOYSA-N 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a kind of control blasting methods for reducing loss and dilution, conventional charge is carried out in main charge blasting hole (3), ore-rock differentiation blast hole (1) is laid on ore-rock line of demarcation (2), ore-rock differentiation blast hole (1) pitch-row c is 0.6~0.9 times of main charge blasting hole (3) pitch-row a, and the rejecting d between ore-rock differentiation blast hole (1) and nearest main charge blasting hole (3) is 0.6~0.9 times of main charge explosion blasthole (3) array pitch b；Ore-rock breaks up blasting hole (1) using radial Uncoincided charge, and the coefficient of coup is not 1.5~2.The present invention breaks up blasting hole by setting ore-rock at ore-rock line of demarcation, separate ore body, rock mass low-cost high-efficiency precisely, ore or barren rock is avoided mutually to mix, solve strip mining transformation loss late and the higher technical problem of the rate of dilution, realize that dividing for ore-rock adopts packing, the loss and dilution for reducing ore, creates good economic benefit.
Description
Technical field
The invention belongs to Controlled blasting technique fields, and in particular to a kind of control blasting method for reducing loss and dilution, especially
It is the accurate separation of ore and rock when having an opencast mining of bench blasting for the above ore body thick in inclination~high-dipping, is effectively mentioned
The rate of extraction of high ore reduces loss and dilution rate, improves ore back production quality.
Background technique
Ore dissipation and dilution is the important Con trolling index for evaluating deposit mining, to evaluate production technique level.In mine
In stone recovery process, ore losses refer to production technique and ore body itself it is some due to cause ore that can not adopt
Out；Ore dilution refers to because being mixed into for barren rock results in grade of ore reduction.Ore losses and ore dilution are both Con trolling index,
It is also economic indicator, mine economic profit is influenced huge.
In order to reduce loss and dilution, in Blasting in open-pit design, is generallyd use in ore-rock boundary and point adopt a point quick-fried mode
The loss and dilution of ore is reduced, wherein face propulsion mode, orebody thickness, slanting angle of ore body etc. are to point adopting a point quick-fried reduction
There are different degrees of influences for loss and dilution, especially precisely separate ore-rock in ore-rock interface with being often difficult economical and efficient,
Usually because explosion backlash leads to a large amount of mixing of ore-rock.It, can also be by mine if directly arranging row's presplitting blasthole in ore-rock boundary
Body and rock mass precisely separate, but presplit blasting expense is about 2000 yuan/m, and complicated construction technique, and it is raw to greatly reduce mine
Produce efficiency and economic benefit.Pre-splitting Blasting Technique is mostly used in side slope at boundary, reduces the influence of blasting vibration side slope, does not have substantially
Have on mine control loss and dilution.It is less to the research of surface mine ore-rock separation reduction loss and dilution both at home and abroad at present,
Still without a kind of method of low-cost high-efficiency control surface mine loss and dilution.
Chinese patent application " a kind of copper-molybdenum Ore loss and dilution rates control method " (application number 201610723517.2)
Ore body, rock mass, construction three-dimensional stereo model are established using software, Ore-block Grade model and Grade Control system is constructed, utilizes life
It produces control platform and realizes that ceaseless intelligent monitoring site is constructed for 24 hours.This method application categories are many and diverse, and feasibility is lower, it is difficult to
Directly it is effectively applicable to mining production.
It is huge to surface mine economic impact to reduce the exploitation losses rate of dilution.The mine at high-dipping ore block ore-rock interface
Loss and dilution problem caused by rock mixes, there is no preferable low-cost high-efficiency solution, the dew excessive to Rock dilution at present
Its mine directly affects exploitation, the beneficiation cost of ore, reduces the economic benefit in mine.
Summary of the invention
For the mixing bring loss and dilution problem for scientificlly and effectively reducing ore and rock at outdoor ore-rock interface, drop
Low production cost improves Business Economic Benefit, and the present invention provides the controls that one kind can improve blasting quality, reduction loss and dilution
Blasting method processed.
Above-mentioned purpose to realize the present invention, a kind of control blasting method for reducing loss and dilution of the present invention pass through following skill
Art scheme is realized:
Exploitation inclination~high-dipping middle thickness orebody, a kind of control for reducing loss and dilution of the present invention are promoted to from upper disk to lower wall
Blasting method processed, according to Hole pattern parameters-pitch-row a, the array pitch b of design, carries out main charge first on pre- explosion perron
Blasting hole is arranged net, and conventional charge is carried out in main charge blasting hole, that is, uses continuous charging.The cloth on ore-rock line of demarcation
If a row suitably reduces the ore-rock differentiation blast hole of pitch-row, it is main charge blasting hole pitch-row a that ore-rock, which breaks up blast hole pitch-row c,
0.6~0.9 times, d is rejected as main charge explosion blasthole row between ore-rock differentiation blast hole and nearest main charge blasting hole
0.6~0.9 times away from b；Ore-rock breaks up blasting hole using radial Uncoincided charge, and the coefficient of coup is not 1.5~2, to guarantee
Explode in the blasthole explosion energy of generation of explosive can push the ore body or rock mass and the ore body or rock that destroy rear in front open
Body forms more complete interface in ore-rock boundary, separates ore-rock more accurately, considerably reduces ore-rock boundary
Locate ore and the mutual of rock mixes, and then control loss and dilution rate, obtains preferable demolition effect.
Staged air spaced loading is used in ore-rock differentiation blasting hole, i.e., is divided to two sections in ore-rock differentiation blasting hole
Blasting charge is divided into base charge section, air section, top explosive section from bottom to top；Top explosive section uses suspension method powder charge, i.e., logical
It crosses the rope made of hemp or other threads top explosive section is suspended in ore-rock differentiation blasting hole, ore-rock breaks up the aperture of blasting hole
The rope made of hemp or other threads are fixed using cross-arm by place；In ore-rock differentiation blasting hole more than the explosive section of top, filling is filled out
Plug thing, padding is generally using drilling rock powder.
Top explosive section dose in ore-rock differentiation blasting hole is 1.3~1.5 times of base charge section dose；Main charge
The number of rows of blasting hole is 2~3 rows；Primacord stretched to outside hole from main charge blasting hole, ore-rock differentiation blasting hole and with
Initiation net connection.Nonel detonator initiation net is used to carry out line detonation after the completion of powder charge, wherein ore-rock breaks up Loose Blasting
Boring ratio main charge blasting hole lags 35~50ms detonation.
A kind of control blasting method for reducing loss and dilution of the present invention after the above technical solution is adopted, has following positive effect
Fruit:
The method of the present invention is directed to from upper disk to lower wall and promotes exploitation inclination~high-dipping middle thickness orebody, in ore-rock boundary cloth
The ore-rock differentiation blasting hole that a row suitably reduces pitch-row is set, is risen with main charge blasting hole according to certain extension time difference sequence
It is quick-fried.Using special charge constitution, come controlled loading of explosive, the coefficient of coup did not pushed the explosion energy in ore-rock differentiation blasting hole both open
The ore body or rock mass in front, and the ore body or rock mass at rear are not destroyed, more complete interface is formed at ore-rock line of demarcation,
It separates ore-rock more accurately, ore-rock boundary ore is greatly lowered and the mutual of rock mixes, and then controls loss and dilution rate,
Obtain preferable demolition effect.
The method of the present invention breaks up blasting hole by setting ore-rock at ore-rock line of demarcation, makes ore body, rock mass low-cost high-efficiency
Precisely separation, avoids ore or barren rock from mutually mixing, and solves strip mining transformation loss late and the higher technical problem of the rate of dilution, realizes mine
Packing is adopted in dividing for rock, is reduced the loss and dilution of ore, is created good economic benefit.
Detailed description of the invention
Fig. 1 is a kind of control blasting method Controlled blasting technique floor map for reducing loss and dilution of the present invention；
Fig. 2 is the Controlled blasting technique differentiation blast hole charge constitution main view that the method for the present invention uses；
Fig. 3 is A-A1 in Fig. 2 to top view.
Appended drawing reference are as follows: 1- ore-rock breaks up blast hole；2- ore-rock line of demarcation；3- main charge blasting hole；4- explosive；5- fiber crops
Rope；6- cross-arm；7- primacord；8- padding.
Specific embodiment
To better describe the present invention, the control blasting method for reducing loss and dilution a kind of to the present invention with reference to the accompanying drawing
It is described in further detail.
A kind of control blasting method Controlled blasting technique floor map for reducing loss and dilution of the present invention as shown in Figure 1
Find out, a kind of control blasting method for reducing loss and dilution of the present invention is joined on pre- explosion perron according to the hole pattern of design
Number-pitch-row a, array pitch b carry out arranging net for main charge blasting hole 3, and ore-rock is laid on ore-rock line of demarcation 2 and breaks up blast hole 1,
Ore-rock differentiation 1 pitch-row c of blast hole is 0.6~0.9 times of 3 pitch-row a of main charge blasting hole, and ore-rock breaks up blast hole 1 and recently
Main charge blasting hole 3 between the d that rejects be 0.6~0.9 times of main 3 array pitch b of charge explosion blasthole.It is carried out after the completion of drilling
The landwaste etc. in blasthole is cleared up in the inspection of the parameters such as blasthole diameter, hole depth, inclination angle.After blasthole cleans out, in main charge explosion
Conventional continuous charging is carried out in blasthole 3, uses staged air spaced loading in ore-rock differentiation blast hole 1.C=in the present embodiment
3m, d=3m, it is all 150mm that main charge blasting hole 3, ore-rock, which break up the diameter of blast hole 1,.
The Controlled blasting technique that the method for the present invention as shown in Figure 2 uses breaks up blast hole charge constitution main view and combines
Fig. 3 finds out, staged air spaced loading is used in ore-rock differentiation blasting hole 1, i.e., is divided to two in ore-rock differentiation blasting hole 1
Section blasting charge 4, is divided into base charge section, air section 5, top explosive section from bottom to top；It is in ore-rock differentiation 1 diameter of blasting hole
When 150mm, the coefficient of coup is not 1.54, and total charge is normal blasthole half, i.e. 60kg, wherein bottom fills 35kg explosive, on
Portion fills 25kg explosive.Top explosive section uses suspension method powder charge, i.e., top explosive section (powder stick) is suspended in ore-rock by the rope made of hemp 5
Break up in blasting hole 1, ore-rock break up it is using cross-arm 6 that the rope made of hemp 5 is fixed at the aperture of blasting hole 1, cross-arm 6 using it is wooden every
Plate, the simple process are easy to operate；In ore-rock differentiation blasting hole 1 more than the explosive section of top, padding 8, padding 8 are loaded
It is highly 5.5m using rock powder.The top explosive section dose that ore-rock is broken up in blasting hole 1 is the 1.3 of base charge section dose
~1.5 times；The number of rows of main charge blasting hole 3 is 2~3 rows, and the present embodiment uses 3 rows.In the present embodiment, explosive 4 (powder stick)
Diameter be 97~100mm.
To form the effective scope of freedom, Nonel detonator initiation net is used to carry out line detonation, ore-rock after the completion of powder charge
Break up blasting hole 1 and lags 42ms detonation than main charge blasting hole 3.The number of rows of main charge blasting hole 3 is no more than 3 rows.
The method of the present invention Ma Gang, Baogang in relation to mine blasting engineering application the result shows that, the method for the present invention be directed to from
Upper disk promotes exploitation inclination~high-dipping middle thickness orebody to lower wall, and in ore-rock line of demarcation, 3 location arrangements, one row suitably reduces pitch-row
Ore-rock break up blast hole 1, detonate with main charge blasting hole 3 according to certain extension time difference sequence, utilize special powder charge
Structure had both pushed the ore body or rock in front open by the controlled loading of explosive explosion energy that coefficient of coup breaks up ore-rock in blast hole 1
Body, and the ore body or rock mass at rear are not destroyed.More complete interface is formed at ore-rock line of demarcation 3, keeps ore-rock more smart
It is quasi-ly separated.Break up blast hole 1 by the way that ore-rock is arranged at ore-rock line of demarcation 3, separate ore body, rock mass low-cost high-efficiency precisely,
It avoids ore or barren rock from mutually mixing, solves strip mining transformation loss late and the higher technical problem of the rate of dilution, realize point adopting for ore-rock
Packing, reduces the loss and dilution of ore, creates good economic benefit.
Claims (5)
1. a kind of control blasting method for reducing loss and dilution, on pre- explosion perron, according to the Hole pattern parameters-of design
Pitch-row a, array pitch b carry out arranging net for main charge blasting hole (3), and conventional charge is carried out in main charge blasting hole (3),
It is characterized in that also using following technical scheme: laying ore-rock differentiation blast hole (1) on ore-rock line of demarcation (2), ore-rock differentiation is quick-fried
Holes (1) pitch-row c is 0.6~0.9 times of main charge blasting hole (3) pitch-row a, and ore-rock breaks up blast hole (1) and nearest master
Rejecting d between charge explosion blasthole (3) is 0.6~0.9 times of main charge explosion blasthole (3) array pitch b；Ore-rock breaks up Loose Blasting
Hole (1) is using radial Uncoincided charge, and the coefficient of coup is not 1.5~2.
2. a kind of control blasting method for reducing loss and dilution as described in claim 1, it is characterised in that: break up in ore-rock quick-fried
Staged air spaced loading is used in broken blasthole (1), i.e., is divided to two sections of blasting charges (4) in ore-rock differentiation blasting hole (1), under
It is divided into base charge section, air section (5), top explosive section on and；Top explosive section uses suspension method powder charge, that is, passes through the rope made of hemp
(5) or top explosive section is suspended in ore-rock differentiation blasting hole (1) by other threads, and ore-rock breaks up blasting hole (1)
The rope made of hemp (5) or other threads are fixed using cross-arm (6) at aperture；Ore-rock more than the explosive section of top breaks up blasting hole
(1) it in, loads padding (8).
3. a kind of control blasting method for reducing loss and dilution as claimed in claim 2, it is characterised in that: explosive (4) uses
Emulsion；Top explosive section dose in ore-rock differentiation blasting hole (1) is 1.3~1.5 times of base charge section dose.
4. a kind of control blasting method for reducing loss and dilution as claimed in claim 1,2 or 3, it is characterised in that: main charge
The number of rows of blasting hole (3) is 2~3 rows.
5. a kind of control blasting method for reducing loss and dilution as claimed in claim 4, it is characterised in that: ore-rock breaks up explosion
Blasthole (1) lags 35~50ms detonation than main charge blasting hole (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910839670.5A CN110530219B (en) | 2019-09-06 | 2019-09-06 | Controlled blasting method for reducing loss and dilution |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910839670.5A CN110530219B (en) | 2019-09-06 | 2019-09-06 | Controlled blasting method for reducing loss and dilution |
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| Publication Number | Publication Date |
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| CN110530219A true CN110530219A (en) | 2019-12-03 |
| CN110530219B CN110530219B (en) | 2021-11-12 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177611A (en) * | 2020-09-28 | 2021-01-05 | 安徽铜冠（庐江）矿业有限公司 | Method for mining inclined or steeply inclined hard thin ore body |
| CN113048852A (en) * | 2021-03-19 | 2021-06-29 | 福建兴万祥建设集团有限公司 | Efficient blasting method for dilution control of low-grade metal ore |
| CN114894052A (en) * | 2021-12-03 | 2022-08-12 | 本钢板材股份有限公司 | Accurate point setting method for open bench blasting |
| CN114963903A (en) * | 2022-05-06 | 2022-08-30 | 安徽马钢矿业资源集团南山矿业有限公司 | Water-rich blast hole mixed emulsion explosive blasting method |
| CN115218733A (en) * | 2022-06-02 | 2022-10-21 | 青岛理工大学 | Deep hole blasting device and using method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997763A (en) * | 2012-11-29 | 2013-03-27 | 青海山金矿业有限公司 | Method for blasting inclined thin ore body by dividing ores and rocks in area in drift driving |
| CN103452558A (en) * | 2013-09-04 | 2013-12-18 | 鞍钢集团矿业公司 | Cutting method for sublevel caving mining |
| CN104213918A (en) * | 2014-08-06 | 2014-12-17 | 中钢集团马鞍山矿山研究院有限公司 | Multilayer gently-inclined extremely-narrow vein stoping blasting technology |
| CN106767213A (en) * | 2017-01-18 | 2017-05-31 | 长沙有色冶金设计研究院有限公司 | A kind of Roof Control blasting method of soft broken top board ore body back production |
| RU2653172C1 (en) * | 2017-06-13 | 2018-05-07 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | Method of explosive preparation of mountain mass to selective excavation |
| CN208588280U (en) * | 2018-06-15 | 2019-03-08 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of fixed Cutting Excavation Blasting cloth pore structure of opencut |
-
2019
- 2019-09-06 CN CN201910839670.5A patent/CN110530219B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997763A (en) * | 2012-11-29 | 2013-03-27 | 青海山金矿业有限公司 | Method for blasting inclined thin ore body by dividing ores and rocks in area in drift driving |
| CN103452558A (en) * | 2013-09-04 | 2013-12-18 | 鞍钢集团矿业公司 | Cutting method for sublevel caving mining |
| CN104213918A (en) * | 2014-08-06 | 2014-12-17 | 中钢集团马鞍山矿山研究院有限公司 | Multilayer gently-inclined extremely-narrow vein stoping blasting technology |
| CN106767213A (en) * | 2017-01-18 | 2017-05-31 | 长沙有色冶金设计研究院有限公司 | A kind of Roof Control blasting method of soft broken top board ore body back production |
| RU2653172C1 (en) * | 2017-06-13 | 2018-05-07 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | Method of explosive preparation of mountain mass to selective excavation |
| CN208588280U (en) * | 2018-06-15 | 2019-03-08 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of fixed Cutting Excavation Blasting cloth pore structure of opencut |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177611A (en) * | 2020-09-28 | 2021-01-05 | 安徽铜冠（庐江）矿业有限公司 | Method for mining inclined or steeply inclined hard thin ore body |
| CN113048852A (en) * | 2021-03-19 | 2021-06-29 | 福建兴万祥建设集团有限公司 | Efficient blasting method for dilution control of low-grade metal ore |
| CN114894052A (en) * | 2021-12-03 | 2022-08-12 | 本钢板材股份有限公司 | Accurate point setting method for open bench blasting |
| CN114894052B (en) * | 2021-12-03 | 2023-11-07 | 本钢板材股份有限公司 | Accurate point setting method for open-air step blasting |
| CN114963903A (en) * | 2022-05-06 | 2022-08-30 | 安徽马钢矿业资源集团南山矿业有限公司 | Water-rich blast hole mixed emulsion explosive blasting method |
| CN115218733A (en) * | 2022-06-02 | 2022-10-21 | 青岛理工大学 | Deep hole blasting device and using method thereof |
| CN115218733B (en) * | 2022-06-02 | 2023-08-11 | 青岛理工大学 | Deep hole blasting device and application method thereof |
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| CN110530219B (en) | 2021-11-12 |
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Address after: 243000 No. 666 Xitang Road, Ma'anshan Economic Development Zone, Anhui Province Patentee after: MAANSHAN Mine Research Institute Co.,Ltd. Patentee after: MAANSHAN INSTITUTE OF MINING RESEARCH BLASTING ENGINEERING CO.,LTD. Patentee after: HUAWEI METAL MINERAL RESOURCE EFFICIENT RECYCLING UTILIZATION NATIONAL ENGINEERING RESEARCH CENTER Co.,Ltd. Address before: 243000 No. 666 Xitang Road, Ma'anshan Economic Development Zone, Anhui Province Patentee before: SINOSTEEL MAANSHAN INSTITUTE OF MINING RESEARCH Co.,Ltd. Patentee before: MAANSHAN INSTITUTE OF MINING RESEARCH BLASTING ENGINEERING CO.,LTD. Patentee before: HUAWEI METAL MINERAL RESOURCE EFFICIENT RECYCLING UTILIZATION NATIONAL ENGINEERING RESEARCH CENTER Co.,Ltd. |