Abstract SYMPHOS 2011

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42 Johan SIIRAK, AkzoNobel Surface Chemistry, Stenungsund/SWEDEN COLLECTOR DEVELOPMENTS FOR COMPLEX PHOSPHATE ORES BN-O-04 The use of flotation to process phosphate ores has increased over the years as phosphate ores become more fine grained and complex. The selectivity problems between the phosphate mineral and other calcium minerals like calcite and dolomite call for the development of new collectors. The paper describes cases where different types of collectors have been developed to process complex phosphate ores with different mineralogical compositions. SURFACE TENSION MEASUREMENT FOR OPTIMIZATION OF FLOTATION CONTROL A. Kramer1 , S. Gaulocher1 , M. Martins2 , L.S. Leal Filho2 BN-O-05 1 ABB Corporate Research, Baden-Dättwil, SWITZERLAND 2 University of São Paolo, Engineering School-Mineral Processing Research Group, São Paulo-SP, BRAZIL In the mineral processing industry froth flotation is widely used for ore separation and concentration. Recently, we found that for phosphate flotation there is a specific relation between ore separation efficiency and surface tension of the slurry with an optimum operating point that maximizes separation efficiency (Figure, left) [1]. In this paper we suggest online in-situ measurement of surface tension in the flotation cell and application of this information for process control (Figure, right). We propose appropriate instrumentation which is suitable for the typically harsh flotation environment. Besides other measurement parameters, such as pH value, ore composition and feed rate, surface tension represents a valuable complementary process parameter which is beneficial for improvement of the flotation control. We suggest using this additional information as input for a model predictive control system (MPC), which was developed by ABB and successfully applied in a zinc flotation plant [2]. Accurate knowledge of the relation between surface tension of the slurry and the ore separation efficiency in combination with a refinement of the physical model provides the basis for an improved MPC. A system on this basis will lead to a more profitable process regarding ore recovery or ore grade.
Figure: Plot of separation efficiency versus surface tension for the apatite/silicate system [1] (left); Froth flotation cell with sensor, actuators and control system (right). 1] M. Martins, L.S. Filho, B.K. Parekh, “Surface tension of flotation solution and its influence on the selectivity of the separation between apatite and gangue minerals”, Minerals and Metallurgical Processing, Vol.26, No.2, p.79, (2009) [2] S. Gaulocher, E. Gallestey, and H. Lindvall, “Advanced process control of a froth flotation circuit”, V International Mineral Processing Seminar, October 22-24, (2008), Santiago, Chile DÉVELOPPEMENT DES MODES D’ENRICHISSEMENT DES PHOSPHATES À L’OCP POUR SATISFAIRE LES EXIGENCES DES CLIENTS CAS DE LA DIRECTION DE PRODUCTION ET DE SITE DE KHOURIBGA BN-O-06 ALOUANI Abdelkader & Mountassir OCP, MAROC Résumé d’une communication de IDK proposée pour le premier symposium international sur l’innovation dans l’industrie du phosphate du 09 au 13 Mai <strong>2011</strong> à Marrakech. L’exploitation des phosphates dans la zone minière de Khouribga se fait à ciel ouvert, les modes d’extraction et de traitement utilisés ont été adaptés pour préserver la qualité des différents niveaux phosphatés, éviter le salissement des qualités extraites, séparer les rejets le plus tôt possible dans la chaine de production et utiliser les techniques les plus adaptées pour l’enrichissement des phosphates. Le contrôle qualité des produits est assuré par la surveillance et la mesure des éléments de pilotage le long des circuits de production. Cette reconnaissance permet d’identifier les caractéristiques des échantillons des qualités sources et marchandes des phosphates prélevés au niveau des différents stades opératoires. Les processus de manutention, d’enrichissement et fabrication des qualités marchandes sont certifiées ISO 9001 et ISO 14001. 43
Page 2 and 3: Dear participants, On behalf of the
Page 4 and 5: EXTRACTION Mansour ASRI, Chercheur
Page 7: PLENARY LECTURES KEYNOTES MINING PH
Page 10 and 11: 10 L’INNOVATION TECHNOLOGIQUE DAN
Page 12 and 13: NANOSTRUCTURE PROCESSING OF ADVANCE
Page 15 and 16: II - KEYNOTES 15
Page 17 and 18: LES MÉTHODES GÉOPHYSIQUES DE SUBS
Page 19 and 20: LES PHOSPHATES, LE LITHIUM ET LE ST
Page 21 and 22: material engineering concepts can b
Page 23 and 24: PHOSPHATE FERTILIZER PRODUCTION FRO
Page 25 and 26: ENVIRONMENTAL ISSUES The plants tha
Page 27: FOOD SECURITY AND THE ROLE OF FERTI
Page 30 and 31: 30 CONCEPTION ET RÉALISATION DES T
Page 32 and 33: LE SURFACE MINING: UN STANDARD INTE
Page 34 and 35: 34 LA STRATIGRAPHIE SEQUENTIELLE OU
Page 36 and 37: - Calcul de Ressources et Étude É
Page 38 and 39: 38 I
Page 40 and 41: 40 BENEFICIATION OF INDIAN LOW GRAD
Page 44 and 45: Pour améliorer davantage la qualit
Page 46 and 47: Results REE elements recovery is ex
Page 48 and 49: 48 Marie VOGNSEN HALDOR TOPSOE A/S,
Page 50 and 51: This contribution gives an overview
Page 52 and 53: 52 Marten WALTERS KEMWorks Technolo
Page 54 and 55: PH-O-04 B. Messnaoui : Laboratoire
Page 56 and 57: at a considerable cost and the wate
Page 58 and 59: phosphate recovery will be determin
Page 60 and 61: The residence time of product in a
Page 62 and 63: 62 IMPROVING PHOSPHORUS USE EFFICIE
Page 64 and 65: 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
Page 83 and 84: Suppression of plumes at the exhaus
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
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• La supervision des réparations
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FLUORINE RECOVERY TECHNOLOGY (INTRO
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HCl regeneration CaCl 2 + H 2 SO 4
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proposées comme la télomérisatio
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PRODUCTION OF GRANULAR AMMONIUM SUL
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X - POSTERS 103
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La série phosphatée étudiée s
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A SIMULATION PACKAGE FOR THE PHOSPH
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FABRICATION DES SUPERPHOSPHATES SSP
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LA SILICIFICATION DES PHOSPHATES MA
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ANALYSIS OF THE LIKELY SUPPLY SIDE
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Many REE are well known as luminesc
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OPERATION OF SURFACE MINER: RETROSP
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Harris Jack, President, VIP Interna
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D.Oussi OCP - MAROC PROJET DE RENOU
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XI - WORKSHOPS 123
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De par ses activités dans le secte
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Re-cyrstalllized structure of a cry
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Pour les professionnels : - les eng
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Pour des engrais de forme aplatie o
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Coatings The underlying principle o
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HOW IS BINDING ACHIEVED? Trace Elem
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MODÉLISATION THERMOCINÉTIQUE DES
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Garret Palmquist (MECS-DuPont), Sen
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The ideas emerged from looking at h
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PH-O-25 ...........................
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Abstract SYMPHOS 2011

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