This work examines the acid decomposition of washed calcined phosphoconcentrate using a mixed secondary sulfuric and extraction phosphoric acid feed (H₂SO₄:H₃PO₄ = 1:0.75) across a dosage range of 50–110 units. Products were characterized by total, citrate-soluble and water-soluble P₂O₅, free P₂O₅, total CaO and nitrogen content; structural changes were analyzed by FTIR spectroscopy. Increasing acid dosage enhanced conversion of mineral phosphorus into plant-available fractions and promoted ammonium incorporation after neutralisation, while reducing CaO content. FTIR results confirmed orthophosphate formation and ammonium-phosphate bonding, supporting the production of liquid complex fertilizer precursors. Optimal balance between available phosphorus and controlled free acidity was achieved at 85–95 units. The study provides process-relevant recommendations for up-scaling using secondary acid streams.
| Mualliflar | Shermatov, Akramjon, Sherkuziyev, Doniyor |
|---|---|
| Jurnal | Наманган муҳандисликтехнология институти илмийтехника журнали |
| Nashriyot | Наманган муҳандислик-технология институти |
| ISSN | 2181-8622, 1682-8658 |
| Nashr sanasi | 2026-03-30 |
| Jild | 11 |
| Son | 1 |
| Betlar | 195-201 |
| Til | Ingliz |
| Ilmiy soha | Kimyo |
| DOI | 10.61151/stjniet.v11i1.999 |
| Indeksga qo‘shilgan | 2026-08-26 |
DOI: 10.61151/stjniet.v11i1.999 · Maqolaning asl sahifasi
Acid decomposition, Washed calcined phosphoconcentrate, Secondary sulfuric acid, Extraction phosphoric acid, Available phosphorus, Ammonium phosphate, FTIR, Process optimization
| APA | Shermatov, Akramjon, & Sherkuziyev, Doniyor (2026). OPTIMIZATION OF ACID DECOMPOSITION OF WASHED CALCINED PHOSPHOCONCENTRATE USING A MIXED SECONDARY SULFURIC–EXTRACTION PHOSPHORIC ACID SYSTEM: CHEMICAL AND FTIR INVESTIGATION. Наманган муҳандисликтехнология институти илмийтехника журнали, 11(1), 195-201. https://doi.org/10.61151/stjniet.v11i1.999 |
|---|---|
| GOST (OAK) | Shermatov, Akramjon, Sherkuziyev, Doniyor OPTIMIZATION OF ACID DECOMPOSITION OF WASHED CALCINED PHOSPHOCONCENTRATE USING A MIXED SECONDARY SULFURIC–EXTRACTION PHOSPHORIC ACID SYSTEM: CHEMICAL AND FTIR INVESTIGATION // Наманган муҳандисликтехнология институти илмийтехника журнали. – 2026. – T. 11, № 1. – P. 195-201. – DOI: 10.61151/stjniet.v11i1.999. |
| MLA | Shermatov, Akramjon, and Sherkuziyev, Doniyor. “OPTIMIZATION OF ACID DECOMPOSITION OF WASHED CALCINED PHOSPHOCONCENTRATE USING A MIXED SECONDARY SULFURIC–EXTRACTION PHOSPHORIC ACID SYSTEM: CHEMICAL AND FTIR INVESTIGATION.” Наманган муҳандисликтехнология институти илмийтехника журнали, 11(1), 195-201, 2026. https://doi.org/10.61151/stjniet.v11i1.999 |
| Chicago | Shermatov, Akramjon, and Sherkuziyev, Doniyor. “OPTIMIZATION OF ACID DECOMPOSITION OF WASHED CALCINED PHOSPHOCONCENTRATE USING A MIXED SECONDARY SULFURIC–EXTRACTION PHOSPHORIC ACID SYSTEM: CHEMICAL AND FTIR INVESTIGATION.” Наманган муҳандисликтехнология институти илмийтехника журнали, 11(1), 195-201 (2026). https://doi.org/10.61151/stjniet.v11i1.999 |
| Harvard | Shermatov, Akramjon, and Sherkuziyev, Doniyor (2026) ‘OPTIMIZATION OF ACID DECOMPOSITION OF WASHED CALCINED PHOSPHOCONCENTRATE USING A MIXED SECONDARY SULFURIC–EXTRACTION PHOSPHORIC ACID SYSTEM: CHEMICAL AND FTIR INVESTIGATION’, Наманган муҳандисликтехнология институти илмийтехника журнали, 11(1), 195-201. https://doi.org/10.61151/stjniet.v11i1.999 |
| BibTeX | @article{shermatovakramjon2026,
title = {OPTIMIZATION OF ACID DECOMPOSITION OF WASHED CALCINED PHOSPHOCONCENTRATE USING A MIXED SECONDARY SULFURIC–EXTRACTION PHOSPHORIC ACID SYSTEM: CHEMICAL AND FTIR INVESTIGATION},
author = {Shermatov, Akramjon and Sherkuziyev, Doniyor},
journal = {Наманган муҳандисликтехнология институти илмийтехника журнали},
year = {2026},
volume = {11},
number = {1},
pages = {195-201},
doi = {10.61151/stjniet.v11i1.999},
url = {https://doi.org/10.61151/stjniet.v11i1.999}
} |
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