A new face drilling rig for narrow tunnels and ... - Advanced Mining

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various combinations of screening and crushing aggregates with corresponding adjustment options for the typical site dimensions of the reviewed hard rock ranges. Variability with regard to the required processing techniques is assured. In laminar mining, mobile primary crusher units can flexibly and securely be applied over several benches, up to an entire height of approximately 30 m, in so-called group-mining. The operation mode can be both mobile and quasi stationary. The mobile operation mode is characterized by the fact that the location of the primary crusher and the loading equipment can be changed at any time, whereas in the quasi-stationary operation the location of the unit is only changed in certain intervals. The changes which result from the mining progress are bridged through a wheel loader, mostly in the land and carry operation mode. In the current case a track-mounted primary crusher system with connected lock-link system is chosen. • Transport system: In the present combination, a continuous, i.e a conveyor belt is most suitable as a transport system. The advantages of a conveyor belt are above all the costefficient, continuous transport over long distances with low maintenance costs. Since the material is already precrushed and as such the size range of the goods to be transported is determined, the dimensioning can be done with high certainty. Ascending and descending slopes do not pose particular difficulties, and in the main gates level differences due to special configurations are possible, so that costly ramp systems with possible deposit losses can be minimized. In the conveying path two basic areas need to be differentiated. While the main conveying path should remain at the same location for a longer time, suitable and short conveyor roads need to be added. These roads should be mobile in their direct connection and to be changed with little effort. Therefore particular emphasis should be given to a flexible connection of the primary crusher to the continuous conveyor. Corresponding system solutions are offered in the market. • Reclaiming: Special equipment is needed for stockpiling and loading on trucks or trains. In order to so, wheel loaders that are offered in various sizes are suitable. For the existing location 3 wheel loaders of the 5,5 m³ category with a loading capacity of 400 t/h each are required. 2 of the equipment take care of the reclaiming, as well as stockpiling work of the finished products, if necessary. One device is foreseen as auxiliary device for loading on trains. Issue 04 | 2010 TRANSFER OF TECHNOLOGY System Planning of the Processing Plant The processing plant processes the pre-crushed rocks to marketable products. The processing is mainly based on multi-stage grading and crushing processes. The needed technical systems can be conducted mobile or stationary. Stationary plants need a higher capital expenditure, but offer more space for storage capacity and more functional constructions. In the current case the decision was made for an open quasi-stationary plant with single crusher- and precious grit treatment. Since apart from the Ukrainian and Russian market, Poland should also be supplied according to EU norms, the single crusher treatment is adjusted to the production of local norms and the precious grit treatment is adjusted to EU standard products. In picture 6 the process design, that was developed for the location, is presented in detail. The mobile primary crusher system described above feeds the stockpile through conveyor belts with approx. 550 t/h of pre-crushed rocks of a size between 0 and 300 mm. With 10,000 tons, the active buffer volume is slightly more than a 2 shift daily production, and sufficiently decouples extraction and processing. The 1st secondary crusher is dimensioned as cone crusher with approx. 608 t/h throughput. Grain sizes of > 70 mm are fed to this crusher in a closed circuit with approx. 55 t/h. In order to actively influence the production and grading of the Ukrainian standard grainings, a further cone crusher is envisaged for possible consecutive crushing of grainings of 40 mm to 70 mm. In case needed, the 5 – 20 mm and 20 to 40 mm grainings are fed to the cutting crushers directly through a buffer silo, or they are stored as final granulation for selling in boxes with deducted subsurface. Since the maximum feeding size of grainings lies at < 40 mm bis 50 mm, separate consecutive crushing of the grainings 40 mm to 70 mm is required. Apart from the sand 0 = 2 mm, the cuttings which are produced with a capacity of approx. 300 t/h, are stored in open boxes with deducted subsurface Grainings of > 20 mm can be additional gritting in a closed circuit. The boxes of finished material allow for overburden thicknesses of 13 m, with which a total quantity of approx. 3,200 t per box at approx. 1,000 t calculated with deducted subsurface amount as an asset. Picture 7 shows the layout of the overall plant. In order to optimize loading on trucks and trains, all boxes of finished product were arranged in one line about a tunnel with deducted subsurfaces. www.advanced-mining.com 22
Pic. 6: Treatment diagram of processing in the Ukraine Issue 04 | 2010 TRANSFER OF TECHNOLOGY www.advanced-mining.com 23
Page 1 and 2: www.advanced-mining.com 04 2010 ADV
Page 3 and 4: EDUCATION NEWS & REPORTS alljig ®
Page 5 and 6: Pic. 1: Multi-phase system of the s
Page 7 and 8: HYDROMETER ANALYSIS The hydrometer
Page 9 and 10: EDUCATION Pic. 7: Interpretation of
Page 11 and 12: Hereby the dry solids md are determ
Page 13 and 14: Issue 04 | 2010 TRANSFER OF TECHNOL
Page 15 and 16: Basics of Market Review and Require
Page 17 and 18: • Layout an Operation Time: Based
Page 19 and 20: Pic. 2: Technical basic parameters
Page 21: Issue 04 | 2010 Pic. 5: 3 D visuali
Page 25 and 26: [5] Kirschbaum, Martin (1991):Grund
Page 29 and 30: Going underground Experts have been
Page 31 and 32: The future All work was successfull
Page 33 and 34: Pic. 2: Schematic tribological syst
Page 35 and 36: Experimental Study In highly abrasi
Page 37 and 38: Results The results of the test acc
Page 39 and 40: Abtrag in mm³ 18 16 14 12 10 8 6 4
Page 41 and 42: Bibliography [1] Uetz, H.: Abrasion
Page 45 and 46: the classical mechanics through a f
Page 47 and 48: Hereby ζ is the coefficient of vel
Page 49 and 50: Characteristic data like active cur
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Page 55 and 56: Like in the coefficient of velocity
Page 57 and 58: Prof. Dr.-Ing. Dipl.-Wi.-Ing. W. A.
Page 59 and 60: Global ressources, reserves and pro
Page 61 and 62: Terms of Trade The three biggest pr
Page 63 and 64: The single wattmeter method (single
Page 65 and 66: Results of the measurement Fig. 12
Page 67 and 68: Bibliography [1] INTERNATIONAL ENER
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Definition of the most important so
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Table 6: Example of admissible soun
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Table 7: Example of admissible soun
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Table 8: Time change of the third-o
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Table 11: Slewing crane - Sum sound
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Issue 04 | 2010 Fig. 24: Comparison
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Fig. 32: Low-noise fan Issue 04 | 2
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Issue 04 | 2010 Zielitz potash mine
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HBR 201 electrohydraulic drilling m
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a Hütte type HBR 201 universal dri
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Introduction The Vertimill® is a u
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while tumbling. In a Vertimill® th
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The Develeopment of Vertimill US$0.
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Issue 04 | 2010 NEWS & REPORTS THE
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Moreover, the impact of the crusher
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Three heavy chain dredgers, a big w
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concrete crusher, demolition and so
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across an area of 125,000 square me
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Following the live demonstrations,
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Also new in the 390D L‘s implemen
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Specification Comparison 390d L / 3
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The tunnel contractor consortium Co
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2011 THE AMS-EVENT CALENDER Issue 0
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