Roasting-leaching experiments on glauconitic rocks of Bakchar ironstone deposit (Western Siberia) for evaluation their fertilizer potential; Applied Clay Science; Vol. 162

Roasting-leaching experiments on glauconitic rocks of Bakchar ironstone deposit (Western Siberia) for evaluation their fertilizer potential; Applied Clay Science; Vol. 162

Bibliographic Details
Parent link:Applied Clay Science
Vol. 162.— 2018.— [P. 121-128]
Corporate Author: Национальный исследовательский Томский политехнический университет Инженерная школа природных ресурсов Отделение геологии
Other Authors: Rudmin M. A. Maksim Andreevich, Oskina Yu. A. Yuliya Aleksandrovna, Banerjee S. Santanu, Mazurov A. K. Aleksey Karpovich, Soktoev B. R. Bulat Rinchinovich, Shaldybin M. V. Mikhail Viktorovich
Summary:Title screen
This study examines factors favouring optimal release of potassium from a glauconitic rock by moderate roasting-leaching. Sieving and electromagnetic separation of oolitic iron ore deposit increases the concentration of glauconite grains substantially. Roasting and chemical leaching of this concentrate enhances the release of potassium as interlayer structures of glauconite collapses. This study records the percentage of potassium recovered from glauconite under different experimental conditions, viz., temperature, reaction time, concentration as well as volume of HCl and stages involved in the leaching treatment. Leaching of glauconite without roasting results a low recovery (<15%) of K at room temperature. The recovery of K content from the sample increases markedly with increase in concentration of HCl, leaching time, and the ratio by mass of sample to HCl, and marginally with increased stages of leaching. Roasting at 900?°C recovers maximum K up to 62–63% for one-stage leaching treatment at 100?°C for 120?min with a 4?mol·l-1 HCl solution for a sample: HCl ratio of 1:5. The roasting-leaching method, therefore, holds promise for converting glauconite to potash salts for agronomic applications.
Режим доступа: по договору с организацией-держателем ресурса
Language:English
Published: 2018
Subjects:
электронный ресурс
труды учёных ТПУ
глауконит
обжиг
выщелачивание
калийные удобрения
оолитовые железные руды
Бакчарское железорудное месторождение
Online Access:https://doi.org/10.1016/j.clay.2018.05.033
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=659668

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