besterekov-u 1

1. Synthesis of NPK fertilizer from low-grade phosphate raw material
2. Comprehensive study of the physical and chemical properties of phosphorus sludge and cottrell dust
3. Beneficiation of low-grade phosphorites by humic acid
4. Beneficiation of phosphate-siliceous slates via acetic acid
5. Recovery of used acetic acid via sulfuric acid
6. Review of methods and technologies for the enrichment of low-grade phosphorites
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