Abstract SYMPHOS 2011

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94 METALLIC HEAT EXCHANGERS ARE TODAY A PROVEN SOLUTION IN PHOSPHORIC ACID PRODUCTION Daniel HERON & Jonas Höwing, Sandvik Materials Technology, SE-811 11 Sandviken SWEDEN In phosphoric acid plants it has been common to use heat exchangers with graphite tubing in the concentration loop. The main reason for using graphite is the excellent corrosion resistance of the material, but the brittleness tends to results in premature failures during operation or cleaning. Graphite tubing can be plugged to extend the service life, but eventually too much heat transfer is lost and replacement will be necessary to restore the production capacity. The tube failures will result in lower productivity and higher costs. Service life can be as short as 3-6 years. Today metallic heat exchangers are a better alternative. Sandvik Materials Technology has supplied Sandvik Sanicro 28 with good success in more than 75 heat exchangers in phosphoric acid plants. Some plants have even achieved more than 16 years of service life. With a good heat exchanger design and proper cleaning a service life over ten years can be expected for Sanicro 28. Recently SMT developed the hyper duplex stainless steel Sandvik SAF 2707 HD®, which is optimized for difficult chloride environments and excels in seawater applications. Sandvik SAF 2707 HD® has also shown excellent results in phosphoric acid, both in laboratory tests and test installations. These results will be presented and discussed in this report. Harris Jack, President, VIP International, Inc.USA AP-O-04 BRICK LINED VS. ALLOY TOWERS IN SULFURIC ACID PLANTS AP-O-05 Weather building a new plant or replacing aged equipment in an existing plant, the advantages and disadvantages between brick lined towers or alloy towers must be considered. Specializing in the maintenance of sulfuric acid towers since 1981, VIP International has inspected and maintained hundreds of towers around the world. This presentation utilizing actual video footage will compare the strengths and weaknesses of each of these designs.
FLUORINE RECOVERY TECHNOLOGY (INTRODUCTION OF THE PRODUCTION OF ANHYDROUS HYDROGEN FLUORIDE (AHF) FROM FLUOROSILICIC ACID) Songlin Liu, CEO of Guizhou Tianfu Chemicals Co., Ltd., Wengfu (Group) Co., Ltd., Guiyang City, CHINA AP-O-06 With the rapid development of the fluorine chemical industry, the demand for raw materials is growing and there is a rapid decline in the reserve of fluorite resources and a great threat to the sustainable development of the fluorine chemical industry. In the wet process of phosphoric acid production, the associated fluorine and silicon are recovered in the form of fluorosilicic acid which is low in concentration and contains more impurities and can only be used to produce low fluorosilicic salts and fluoride salts or discharged after neutralization. Wengfu (Group) Co., Ltd. applies a new technology which utilises the by-product, fluorosilicic acid, from phosphate fertilizer production to produce Anhydrous Hydrogen Fluoride (AHF) and Reactive Silica (White carbon Black); which will not only help to control fluoride pollution but also ensure the effective use of fluorine and silicon resources. 90% of fluorine in the world can be found in phosphate resources, which proves that the recovery of associated fluorine from phosphate will be the main source of fluorine industry in the future. CATHODE MATERIALS FOR HIGH-PERFORMANCE LI-ION BATTERIES A NEW OPPORTUNITY FOR THE PHOSPHATE INDUSTRY Fabrice Renard, PRAYON SA/BELGIQUE ,Vice President Innovation AP-O-07 To achieve mass production success, car makers need new battery technologies combining high performance, low cost, safety and long cycle life. Lithium iron phosphate is the most promising cathode material, provided its performance level can be improved to at least 140 kWh/kg and its manufacturing cost kept below $15/kg. Prayon is working with CEA (France) to jointly scale up production of the world’s best available material – lithium iron boron phosphate – in a fast, continuous process. Global competition, the worldwide market and the next generation of phosphate-based cathode materials will also be briefly presented. About Prayon (Engis, Belgium) Prayon, jointly owned by OCP (Morocco) and SRIW (Belgium), is a world leader in speciality phosphates, with forecast sales of €800 million in <strong>2011</strong>. The company employs more than 1400 people around the world with four fully owned plants in Europe and the United States. Its core business covers industrial applications (including detergents, metal treatment, refractories and water) and food applications (meat, baked goods, seafood, processed cheese and more) 95
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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
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
Page 93: • La supervision des réparations
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 and 116: Many REE are well known as luminesc
Page 117 and 118: OPERATION OF SURFACE MINER: RETROSP
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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PH-O-25 ...........................
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