cvmetИзвестия вузов. Цветная металлургияIzvestiya. Non-Ferrous Metallurgy0021-34382412-8783НИТУ МИСИС10.17073/0021-3438-2022-3-4-12cvmet-1372Research ArticleМеталлургия цветных металловMetallurgy of Non-Ferrous MetalsГидрометаллургическая переработка отработанных цинк-марганцевых элементов питанияHydrometallurgical processing of spent zinc-manganese batteriesКолмачихинаЭ. Б.KolmachikhinaE. B.

канд. техн. наук, доцент

кафедра металлургии цветных металлов (МЦМ)

620002

ул. Мира, 19

Екатеринбург

Candidate of Technical Sciences, Associate Professor

Department of Metallurgy of Non-ferrous Metals (MCM)

620002

19 Mira Street

Ekaterinburg

Ekaterinburg

e.b.khazieva@urfu.ruНаумовК. Д.NaumovK. D.

канд. техн. наук, инженер

кафедра металлургии цветных металлов

Екатеринбург

Candidate of Technical Sciences, Engineer

Department of Metallurgy of non-ferrous Metals

Ekaterinburg

naumov.konstantin@urfu.ruБлудоваД. И.BludovaD. I.

ассистент

кафедра металлургии цветных металлов

Екатеринбург

assistant

Department of Metallurgy of non-ferrous Metals

Ekaterinburg

dana.bludova@urfu.ruСапьяновС. А.Sap’yanovS. A.

аспирант

кафедра литейного производства

Екатеринбург

graduate student

department of foundry production

Ekaterinburg

ssa@ruscobalt.ruЛобановВ. Г.LobanovV. G.

канд. техн. наук, доцент

кафедра металлургии цветных металлов

Екатеринбург

Candidate of Technical Sciences, Associate Professor

Department of Metallurgy of non-ferrous Metals

Ekaterinburg

v.g.lobanov@urfu.ruГолибзодаЗ. М.GolibzodaZ. M.

студент

кафедра металлургии цветных металлов

Екатеринбург

student

Department of Metallurgy of non-ferrous Metals

Ekaterinburg

golibzoda@mail.ruУральский федеральный университет (УрФУ) им. первого Президента России Б. Н. ЕльцинаРоссияUral Federal University named after the first President of Russia B. N. Yeltsin (UrFU)Russian Federation20221406202203412Copyright © Колмачихина Э.Б., Наумов К.Д., Блудова Д.И., Сапьянов С.А., Лобанов В.Г., Голибзода З.М., 20222022Колмачихина Э.Б., Наумов К.Д., Блудова Д.И., Сапьянов С.А., Лобанов В.Г., Голибзода З.М.Kolmachikhina E.B., Naumov K.D., Bludova D.I., Sap’yanov S.A., Lobanov V.G., Golibzoda Z.M.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://cvmet.misis.ru/jour/article/view/1372

   Изучена возможность переработки цинк-марганцевых батарей в щелочной среде. Показано, что трехступенчатая отмывка позволяет удалить хлориды калия из активной массы измельченных батарей. Установлены закономерности влияния параметров щелочного выщелачивания смеси солевых и щелочных батарей (температура, концентрация щелочи и количество циклов) на извлечение цинка в раствор. Определена причина низкого извлечения цинка из данного материала – наличие труднорастворимых в щелочах соединений цинка и марганца: гетеролита и гидрогетеролита, которые могут образовываться в процессе эксплуатации батарей. Выявлено, что с повышением концентрации NaOH от 100 до 205 г/дм3 растет извлечение цинка в 2,6 раза, но дальнейшее увеличение содержания NaOH и температуры в диапазоне 30–85 °С не влияет на переход цинка в раствор. Определены оптимальные режимы выщелачивания смеси солевых и щелочных батарей при продолжительности 30 мин и плотности пульпы 200 г/дм3 : температура 30 °С, концентрация NaOH – 390 г/дм3 . Проведение опытов по накоплению ионов цинка с повторным направлением на выщелачивание фильтрата показало, что при повышении исходной концентрации NaOH до 390 г/дм3 удается перевести максимально возможное количество цинка в раствор при том же расходе NaOH за счет цикличной обработки растворов. Концентрация цинка в растворах после выщелачивания достигала 59 г/дм3 , а NaOH – 300 г/дм3. Полученные растворы могут направляться на электроэкстракцию цинка и затем снова возвращаться на выщелачивание.

   This paper explores the possibility of zinc-manganese battery recycling in alkaline solutions. It was shown that three-stage washing could remove potassium chlorides from active mass of milled batteries. Influence pattern regularities were established for some parameters (temperature, alkali concentration and number of cycles) of alkaline leaching of a zinc-carbon and alkaline battery mixture in respect of zinc extraction into the solution. The reason of low zinc extraction from this material was found to be the presence of zinc and manganese compounds as heterolite and hydroheterolite that are difficult to dissolve in alkalis. It was found that zinc extraction increases by 2.6 times with an increase in the NaOH concentration from 100 to 205 g/dm3 , but further increase in the NaOH concentration, as well as an increase in temperature in the range of 30–85 °C, does not affect zinc extraction into the solution. Optimal process parameters of zinc-carbon and alkaline battery leaching at 30 min leaching time and 200 g/dm3 pulp density were determined as follows: temperature is 30 °C, NaOH concentration is 390 g/dm3 . Experiments on zinc ion accumulation with repeated filtrate leaching showed that increasing the initial NaOH concentration to 390 g/dm3 makes it possible to transfer the maximum possible amount of zinc into the solution at the same NaOH consumption due to the cyclic treatment of solutions. Zinc and NaOH concentrations in solutions after leaching reached 59 g/dm3 and 300 g/dm3 , respectively. Solutions obtained could be sent to zinc electrowinning and then returned to leaching again.

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The authors declare that there are no conflicts of interest present.