Abstract SYMPHOS 2011

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Apatite zoning revealed by CL spectroscopy coupled with SEM imaging The luminescence activators were also identified Keywords: Apatite; Rare Earth Elements, Microprobe; CL-spectroscopy; CL-microscopy; Scanning Electron Microscopy. 116 Interpretation of the CL spetrum of Lueshe apatire
OPERATION OF SURFACE MINER: RETROSPECT OF A DECADE JOURNEY IN INDIA Kaushik Dey and Jayanta Bhattacharya, Department of Mining Engineering Indian Institute of Technology, Kharagpur, INDIA Surface miners made their debut in Indian surface mining industry in 1996. Initially, it was introduced for mining of limestone deposits. The application of surface miner was extended for coal mining in the year 1999. Presently, more than 100 surface miners are working in Indian surface mines owing to its higher productivity and environmentfriendliness. India is the largest user of surface miner in the world. Presently, surface miner is also experimented for excavation of different deposits, namely, bauxite, hematite, sandstone, shale etc. Initially, the surface miners were being deployed largely on trial and error basis and the investors are interested in-field experimental runs. Manufacturers evaluated the applicability of surface miners based on compressive strength of rock. Recently, a cuttability index has been developed to predict the applicability and performance of surface miners for different application condition. This enables the user to predict the productivity of the machine prior to invest on purchasing the same. The main reason for the popularity of surface miner is its environment-friendly excavation compared to the conventional drilling and blasting technique. It completely eliminates drilling blasting and primary crushing unit and thus reduces their associated environmental hazards. Apart from this, the sized excavated material increase the transport/conveying efficiency and thus save the energy requirement in transportation. Application of surface miner with proper planning yields better efficiency. The planning can be categorized into two parts, namely, short term and long term planning. Short term planning is within the control of field engineer and is carried out to achieve the steady production rate and quality control. For mining with surface miner, short term planning is carried out to select the operating mode, place of operation etc. Surface miner can allow a steep slope angle. As the blasting (short term stress) is eliminated the factor of safety for the pit slope can be kept low. This reduces the stripping ratio and increases the overall productivity of the mine. These are the essential consideration for long term planning with surface miner. This present paper would discuss the Indian experience of surface miner operation on the above issues. The benefits of the deployment and the challenges faced during operation have been discussed in this paper. The recent research and development carried out in this area is also highlighted. Key words: Surface miner, cuttability, mine planning, environmental impact P16 117
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Dear participants, On behalf of the
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EXTRACTION Mansour ASRI, Chercheur
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PLENARY LECTURES KEYNOTES MINING PH
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10 L’INNOVATION TECHNOLOGIQUE DAN
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NANOSTRUCTURE PROCESSING OF ADVANCE
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II - KEYNOTES 15
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LES MÉTHODES GÉOPHYSIQUES DE SUBS
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LES PHOSPHATES, LE LITHIUM ET LE ST
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material engineering concepts can b
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PHOSPHATE FERTILIZER PRODUCTION FRO
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ENVIRONMENTAL ISSUES The plants tha
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FOOD SECURITY AND THE ROLE OF FERTI
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30 CONCEPTION ET RÉALISATION DES T
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LE SURFACE MINING: UN STANDARD INTE
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34 LA STRATIGRAPHIE SEQUENTIELLE OU
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- Calcul de Ressources et Étude É
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38 I
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40 BENEFICIATION OF INDIAN LOW GRAD
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42 Johan SIIRAK, AkzoNobel Surface
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Pour améliorer davantage la qualit
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Results REE elements recovery is ex
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48 Marie VOGNSEN HALDOR TOPSOE A/S,
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This contribution gives an overview
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52 Marten WALTERS KEMWorks Technolo
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PH-O-04 B. Messnaoui : Laboratoire
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at a considerable cost and the wate
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phosphate recovery will be determin
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The residence time of product in a
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62 IMPROVING PHOSPHORUS USE EFFICIE
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PH-O-16 Todd Hutchinson Director of
Page 66 and 67: Wet process phosphoric acid is fed
Page 68 and 69: 68 Louis Paul Irwin, ArrMaz Custom
Page 70 and 71: 70 FLUOROSILICIC ACID RECOVERY FROM
Page 73 and 74: VII - ENVIRONMENT & SUSTAINABLE DEV
Page 75 and 76: infiuence, 2 - average, 1 - less es
Page 77 and 78: downstream weir at the end of the p
Page 79 and 80: Pascale Compain Bertin Technologies
Page 81 and 82: WATER MANAGEMENT IN PHOSPHORIC ACID
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Page 85 and 86: key pollutants including heavy meta
Page 87 and 88: VIII - INDUSTRIAL MANAGEMENT 87
Page 89 and 90: BELGHITI ALAOUI Mohamed OCP, MOROCC
Page 91 and 92: IX - MATERIALS & NEW PRODUCTS 91
Page 93 and 94: • La supervision des réparations
Page 95 and 96: FLUORINE RECOVERY TECHNOLOGY (INTRO
Page 97 and 98: HCl regeneration CaCl 2 + H 2 SO 4
Page 99 and 100: proposées comme la télomérisatio
Page 101 and 102: PRODUCTION OF GRANULAR AMMONIUM SUL
Page 103 and 104: X - POSTERS 103
Page 105 and 106: La série phosphatée étudiée s
Page 107 and 108: A SIMULATION PACKAGE FOR THE PHOSPH
Page 109 and 110: FABRICATION DES SUPERPHOSPHATES SSP
Page 111 and 112: LA SILICIFICATION DES PHOSPHATES MA
Page 113 and 114: ANALYSIS OF THE LIKELY SUPPLY SIDE
Page 115: Many REE are well known as luminesc
Page 119 and 120: Harris Jack, President, VIP Interna
Page 121 and 122: D.Oussi OCP - MAROC PROJET DE RENOU
Page 123 and 124: XI - WORKSHOPS 123
Page 125 and 126: De par ses activités dans le secte
Page 127 and 128: Re-cyrstalllized structure of a cry
Page 129 and 130: Pour les professionnels : - les eng
Page 131 and 132: Pour des engrais de forme aplatie o
Page 133 and 134: Coatings The underlying principle o
Page 135 and 136: HOW IS BINDING ACHIEVED? Trace Elem
Page 137 and 138: MODÉLISATION THERMOCINÉTIQUE DES
Page 139 and 140: Garret Palmquist (MECS-DuPont), Sen
Page 141 and 142: The ideas emerged from looking at h
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Page 145 and 146: PH-O-25 ...........................
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