Abstract SYMPHOS 2011

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 2011. 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)
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