Latest Trend for Fluorine in the Phosphoric Industry: Absorption Efficiency Improvement, Conversion into Raw Material

摘要

1. During reaction, fluoride salts will be transformed into volatile fluorinated compounds. 2. Fluorine going to the gaseous effluents: 5-10% compared to the initial quantity in the rock. 3. Proportion increases with the phosphoric acid strength. 4. Gazeous emission have an impact on health and environment. 4.1 Human tolerance (24 h) : 0,2 mg HF / m~3 air 4.2 Vegetation tolerance (24h) : 0,002 mg HF / m~3 air