The possibility of obtaining highly dispersed powders of amorphous silicon dioxide from technogenic metallurgical wastes, which are dump slags of copper-smelting production and dustlike waste of the production of silicon and ferrosilicon (microsilica), is shown. A fairly simple and economical synthesis method is described using one reagent (ammonium fluoride (bifluoride)) at low temperatures (up to 400°C). The synthesized silica dioxide has a high degree of purity (~99.96%) and is amorphous, which are confirmed by spectrometry and X-ray phase analysis data. By laser correlation spectroscopy, it has been shown that the particle size distribution in an aqueous medium is bi- and trimodal; the particle diameter is predominantly 1300 and 5500 nm, and aggregate sizes of 130−250 nm are also present. The effective diameter of the silica particles decreases with increasing in ultrasonic treatment time.
| Mualliflar | Абдурахманов, Б.М., Курбанов, М.Ш., Тулаганов, С.А., Эрназаров, М., Андрийко, Л.С., Маринин, А.И., Шевченко, А.Ю. |
|---|---|
| Jurnal | O‘zbekiston fizika jurnali |
| Nashr sanasi | 2021-08-20 |
| Jild | 23 |
| Son | 1 |
| Betlar | 65-74 |
| Til | Rus |
| DOI | 10.52304/.v23i1.226 |
DOI: 10.52304/.v23i1.226 · Maqolaning asl sahifasi
синтез, фторирование, фторид аммония, техногенные металлургические отходы, высокодисперсные порошки, аморфный диоксид кремния, распределение частиц по размерам., synthesis, fluorination, ammonium fluoride, industrial metallurgical waste, highly dispersed powders, amorphous silicon dioxide, particle size distribution.
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