Preliminary Chemical Activation of Ash Waste with Release of Carbon Concentrate

Research has been carried out to obtain carbonaceous concentrate from ash from the combustion of Ekibastuz coals by the flotation method. To increase the efficiency of flotation, a preliminary chemical activation of ash in a sodium bicarbonate solution was used, which made it possible to change the...

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Autores principales:	Altynsary Bakirov, Saule Abdulina, Ablay Zhunusov, Natalya Oleinikova
Formato:	article
Lenguaje:	EN
Publicado:	AIDIC Servizi S.r.l. 2021
Materias:	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
Acceso en línea:	https://doaj.org/article/0a8419d02a1d4bb4a59c2a1ebf7af2c6
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spelling	oai:doaj.org-article:0a8419d02a1d4bb4a59c2a1ebf7af2c62021-11-15T21:47:24ZPreliminary Chemical Activation of Ash Waste with Release of Carbon Concentrate10.3303/CET21881622283-9216https://doaj.org/article/0a8419d02a1d4bb4a59c2a1ebf7af2c62021-11-01T00:00:00Zhttps://www.cetjournal.it/index.php/cet/article/view/11955https://doaj.org/toc/2283-9216Research has been carried out to obtain carbonaceous concentrate from ash from the combustion of Ekibastuz coals by the flotation method. To increase the efficiency of flotation, a preliminary chemical activation of ash in a sodium bicarbonate solution was used, which made it possible to change the phase composition and mineral structure. Upon activation, the phases of aluminum silicate-silymanite and hedenbergite disappeared, changes occurred in mullite towards a decrease in the content of silica in it, the content of free silica increased from 8.7 to 36.1 %, and the calcite phase appeared. As a result of studies, it was determined that the optimal temperature of chemical activation is 150 °C, a further increase in temperature leads to insignificant changes in the phase composition. At a temperature of 150 °C, phase transformations in ash are completed with a duration of 60 - 90 min. After chemical activation of the ash, the carbon content in the carbonaceous concentrate obtained during flotation doubled. The richest carbonaceous concentrate with a carbon content of 52.9 % was obtained using kerosene and MIBC (Methylisobutylcarbinol).Altynsary BakirovSaule AbdulinaAblay ZhunusovNatalya OleinikovaAIDIC Servizi S.r.l.articleChemical engineeringTP155-156Computer engineering. Computer hardwareTK7885-7895ENChemical Engineering Transactions, Vol 88 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
spellingShingle	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895 Altynsary Bakirov Saule Abdulina Ablay Zhunusov Natalya Oleinikova Preliminary Chemical Activation of Ash Waste with Release of Carbon Concentrate
description	Research has been carried out to obtain carbonaceous concentrate from ash from the combustion of Ekibastuz coals by the flotation method. To increase the efficiency of flotation, a preliminary chemical activation of ash in a sodium bicarbonate solution was used, which made it possible to change the phase composition and mineral structure. Upon activation, the phases of aluminum silicate-silymanite and hedenbergite disappeared, changes occurred in mullite towards a decrease in the content of silica in it, the content of free silica increased from 8.7 to 36.1 %, and the calcite phase appeared. As a result of studies, it was determined that the optimal temperature of chemical activation is 150 °C, a further increase in temperature leads to insignificant changes in the phase composition. At a temperature of 150 °C, phase transformations in ash are completed with a duration of 60 - 90 min. After chemical activation of the ash, the carbon content in the carbonaceous concentrate obtained during flotation doubled. The richest carbonaceous concentrate with a carbon content of 52.9 % was obtained using kerosene and MIBC (Methylisobutylcarbinol).
format	article
author	Altynsary Bakirov Saule Abdulina Ablay Zhunusov Natalya Oleinikova
author_facet	Altynsary Bakirov Saule Abdulina Ablay Zhunusov Natalya Oleinikova
author_sort	Altynsary Bakirov
title	Preliminary Chemical Activation of Ash Waste with Release of Carbon Concentrate
title_short	Preliminary Chemical Activation of Ash Waste with Release of Carbon Concentrate
title_full	Preliminary Chemical Activation of Ash Waste with Release of Carbon Concentrate
title_fullStr	Preliminary Chemical Activation of Ash Waste with Release of Carbon Concentrate
title_full_unstemmed	Preliminary Chemical Activation of Ash Waste with Release of Carbon Concentrate
title_sort	preliminary chemical activation of ash waste with release of carbon concentrate
publisher	AIDIC Servizi S.r.l.
publishDate	2021
url	https://doaj.org/article/0a8419d02a1d4bb4a59c2a1ebf7af2c6
work_keys_str_mv	AT altynsarybakirov preliminarychemicalactivationofashwastewithreleaseofcarbonconcentrate AT sauleabdulina preliminarychemicalactivationofashwastewithreleaseofcarbonconcentrate AT ablayzhunusov preliminarychemicalactivationofashwastewithreleaseofcarbonconcentrate AT natalyaoleinikova preliminarychemicalactivationofashwastewithreleaseofcarbonconcentrate
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Preliminary Chemical Activation of Ash Waste with Release of Carbon Concentrate

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