Scientific and technological foundations for washing- based purification of phosphogypsum

Namazov, Shafoat Sattarovich, Radjabov, Ruzmat, Kholmurodov, Jamshid Erkinovich, Karshiev, Bekzod Nosirovich, Khudayberdiyev, Jaloliddin Khasanovich

Қўқон ДПИ. Илмий хабарлар · 2026-yil

Annotatsiya

This article examines the ecological and technological foundations of purifying phosphogypsum from harmful impurities. Phosphogypsum is a technogenic waste generated in large quantities during the production of wet-process phosphoric acid from phosphate raw materials. In addition to calcium sulphate dihydrate, it contains phosphates, fluorides, silicon, iron and aluminium compounds, soluble salts, and other impurities. These impurities limit the use of phosphogypsum in the production of construction materials, mineral fertilizers, and chemical products. In this study, the potential to improve the physicochemical and morphological properties of phosphogypsum samples was evaluated by first washing them with ordinary water, then with weakly acidic water, using a counter- current washing method. During the washing process, partial removal of soluble phosphate and fluoride ions, residual acids, and finely dispersed impurities was observed. SEM analysis revealed uneven layers and adhered impurities on the surface of unwashed phosphogypsum, whereas the washed sample exhibited relatively cleaner crystal surfaces. The results substantiate the necessity of a washing stage before using phosphogypsum as a secondary mineral raw material for subsequent chemical conversion, the production of ammonium sulfate and calcium carbonate, and the manufacture of construction materials.

Maqola ma’lumotlari
MualliflarNamazov, Shafoat Sattarovich, Radjabov, Ruzmat, Kholmurodov, Jamshid Erkinovich, Karshiev, Bekzod Nosirovich, Khudayberdiyev, Jaloliddin Khasanovich
JurnalҚўқон ДПИ. Илмий хабарлар
NashriyotҚўқон давлат педагогика институти
ISSN3030-3958
Nashr sanasi2026-09-05
Jild8
Son6
Betlar104-114
TilIngliz
DOI10.70728/a.series.tab.v08.i06.015
Indeksga qo‘shilgan2026-09-06

DOI: 10.70728/a.series.tab.v08.i06.015 · Maqolaning asl sahifasi

Kalit so‘zlar

phosphogypsum, washing, weakly acidic medium, harmful impurities, phosphate, fluoride, SEM, secondary raw material.

Iqtibos keltirish

APANamazov, Shafoat Sattarovich, Radjabov, Ruzmat, Kholmurodov, Jamshid Erkinovich, Karshiev, Bekzod Nosirovich, & Khudayberdiyev, Jaloliddin Khasanovich (2026). SCIENTIFIC AND TECHNOLOGICAL FOUNDATIONS FOR WASHING- BASED PURIFICATION OF PHOSPHOGYPSUM. Қўқон ДПИ. Илмий хабарлар, 8(6), 104-114. https://doi.org/10.70728/a.series.tab.v08.i06.015
GOST (OAK)Namazov, Shafoat Sattarovich va b. SCIENTIFIC AND TECHNOLOGICAL FOUNDATIONS FOR WASHING- BASED PURIFICATION OF PHOSPHOGYPSUM // Қўқон ДПИ. Илмий хабарлар. – 2026. – T. 8, № 6. – P. 104-114. – DOI: 10.70728/a.series.tab.v08.i06.015.
MLANamazov, Shafoat Sattarovich, Radjabov, Ruzmat, Kholmurodov, Jamshid Erkinovich, Karshiev, Bekzod Nosirovich, and Khudayberdiyev, Jaloliddin Khasanovich. “SCIENTIFIC AND TECHNOLOGICAL FOUNDATIONS FOR WASHING- BASED PURIFICATION OF PHOSPHOGYPSUM.” Қўқон ДПИ. Илмий хабарлар, 8(6), 104-114, 2026. https://doi.org/10.70728/a.series.tab.v08.i06.015
ChicagoNamazov, Shafoat Sattarovich, Radjabov, Ruzmat, Kholmurodov, Jamshid Erkinovich, Karshiev, Bekzod Nosirovich, and Khudayberdiyev, Jaloliddin Khasanovich. “SCIENTIFIC AND TECHNOLOGICAL FOUNDATIONS FOR WASHING- BASED PURIFICATION OF PHOSPHOGYPSUM.” Қўқон ДПИ. Илмий хабарлар, 8(6), 104-114 (2026). https://doi.org/10.70728/a.series.tab.v08.i06.015
HarvardNamazov, Shafoat Sattarovich, Radjabov, Ruzmat, Kholmurodov, Jamshid Erkinovich, Karshiev, Bekzod Nosirovich, and Khudayberdiyev, Jaloliddin Khasanovich (2026) ‘SCIENTIFIC AND TECHNOLOGICAL FOUNDATIONS FOR WASHING- BASED PURIFICATION OF PHOSPHOGYPSUM’, Қўқон ДПИ. Илмий хабарлар, 8(6), 104-114. https://doi.org/10.70728/a.series.tab.v08.i06.015
BibTeX
@article{namazovshafoatsattarovich2026,
  title = {SCIENTIFIC AND TECHNOLOGICAL FOUNDATIONS FOR WASHING- BASED PURIFICATION OF PHOSPHOGYPSUM},
  author = {Namazov, Shafoat Sattarovich and Radjabov, Ruzmat and Kholmurodov, Jamshid Erkinovich and Karshiev, Bekzod Nosirovich and Khudayberdiyev, Jaloliddin Khasanovich},
  journal = {Қўқон ДПИ. Илмий хабарлар},
  year = {2026},
  volume = {8},
  number = {6},
  pages = {104-114},
  doi = {10.70728/a.series.tab.v08.i06.015},
  url = {https://doi.org/10.70728/a.series.tab.v08.i06.015}
}

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