Technique and technology of silicates Technique and technology of silicates Техника и технология силикатов 2076-0655 90818 10.62980/2076-0655-2024-68-76 ОСНОВНАЯ РУБРИКА MAIN RUBRIC ОСНОВНАЯ РУБРИКА COMPARATIVE ANALYSIS OF THE EFFECT OF SODIUM CONTAINING MELTS ON SINTERING AND MELTING OF ALUMINOSILICATE INDUSTRIAL WASTES СРАВНИТЕЛЬНЫЙ АНАЛИЗ ВОЗДЕЙСТВИЯ НАТРИЙСОДЕРЖАЩИХ ПЛАВНЕЙ НА СПЕКАНИЕ И ПЛАВЛЕНИЕ АЛЮМОСИЛИКАТНЫХ ПРОМЫШЛЕННЫХ ОТХОДОВ Гольцман Борис Михайлович Gol’tsman Boris Mikhailovich

кандидат технических наук;кандидат технических наук;

candidate of technical sciences;candidate of technical sciences;

 Яценко Елена Альфредовна Yatsenko Elena Alfredovna e_yatsenko@mail.ru Пантелеева Анна Евгеньевна Panteleeva Anna Evgenievna annapae@mail.ru Бостанов Юрий Александрович Bostanov Yuriy Alexandrovich yurabostanov@mail.ru Смолий Виктория Александровна Smoliy Victoria Aleksandrovna vikk-toria@yandex.ru

кандидат технических наук;

candidate of technical sciences;

 ФГБОУ ВО "ЮЖНО-РОССИЙСКИЙ ГОСУДАРСТВЕННЫЙ ПОЛИТЕХНИЧЕСКИЙ УНИВЕРСИТЕТ (НПИ) ИМЕНИ М.И. ПЛАТОВА" Новосеркасск Россия Federal State Budgetary Educational Institution of Higher Education "M.I.Platov South-Russian State Polytechnic University (NPI)" Novocherkassk Russian Federation ФГБОУ ВО "ЮЖНО-РОССИЙСКИЙ ГОСУДАРСТВЕННЫЙ ПОЛИТЕХНИЧЕСКИЙ УНИВЕРСИТЕТ (НПИ) ИМЕНИ М.И. ПЛАТОВА" Новочеркасск Россия Federal State Budgetary Educational Institution of Higher Education "M.I.Platov South-Russian State Polytechnic University (NPI)" Novocherkassk Russian Federation ФГБОУ ВО "ЮЖНО-РОССИЙСКИЙ ГОСУДАРСТВЕННЫЙ ПОЛИТЕХНИЧЕСКИЙ УНИВЕРСИТЕТ (НПИ) ИМЕНИ М.И. ПЛАТОВА" Новочеркасск Россия Federal State Budgetary Educational Institution of Higher Education "M.I.Platov South-Russian State Polytechnic University (NPI)" Novocherkassk Russian Federation ФГБОУ ВО "ЮЖНО-РОССИЙСКИЙ ГОСУДАРСТВЕННЫЙ ПОЛИТЕХНИЧЕСКИЙ УНИВЕРСИТЕТ (НПИ) ИМЕНИ М.И. ПЛАТОВА" Новочеркасск Россия Federal State Budgetary Educational Institution of Higher Education "M.I.Platov South-Russian State Polytechnic University (NPI)" Novocherkassk Russian Federation ФГБОУ ВО "ЮЖНО-РОССИЙСКИЙ ГОСУДАРСТВЕННЫЙ ПОЛИТЕХНИЧЕСКИЙ УНИВЕРСИТЕТ (НПИ) ИМЕНИ М.И. ПЛАТОВА" Новочеркасск Россия Federal State Budgetary Educational Institution of Higher Education "M.I.Platov South-Russian State Polytechnic University (NPI)" Novocherkassk Russian Federation 21 11 2024 21 11 2024 31 1 68 76 20 02 2024 20 03 2024 https://tsilicates.ru/en/nauka/article/90818/view

Рециклинг крупнотоннажных промышленных отходов с производством строительных материалов является весьма перспективным. Учитывая высокое содержание тугоплавких компонентов, целесообразным является снижение энергоемкости синтеза за счет введения флюсующих добавок плавней. В данной статье рассматривается влияние наиболее активного класса плавней – натрийсодержащих соединений – на спекание и плавление золошлаковых отходов (ЗШО) тепловых электростанций. Был осуществлен высокотемпературный синтез составов, содержащих ЗШО и различные количества натрийсодержащих плавней (Na2CO3, Na2B4O7, NaF, NaOH). Показано, что со-держание Na2O не является решающей характеристикой в оценке флюсующей активности. Выявлен наиболее активный плавень Na2B4O7, даже небольшие количества которого обеспечивают резкое ускорение спекания и плавления. Установлена тенденция золошлаковых отходов к «самовспениванию» за счет окисления остаточного углерода и формирования пор выделившимися газами. Изучено изменение склонности к вспениванию при введении различных плавней и параметры получаемой пористой структуры, включающей темно-серые вспененные области и спеченные области коричневого цвета.

Recycling of large-tonnage industrial waste with the production of construction materials is very promising. Taking in-to account the high content of refractory components, it is reasonable to reduce the energy intensity of synthesis by intro-ducing fluxing additives of melts. In this article the influence of the most active class of melts - sodium-containing com-pounds - on sintering and melting of ash and slag wastes (ASW) from thermal power plants is considered. High-temperature synthesis of compositions containing ASW and different amounts of sodium-containing fines (Na2CO3, Na2B4O7, NaF, NaOH) was carried out. It is shown that the Na2O content is not a decisive characteristic in the evaluation of fluxing activi-ty. The most active fluxing agent Na2B4O7 is revealed, even small amounts of which provide sharp acceleration of sintering and melting. The tendency of ash and slag waste to "self-foaming" due to oxidation of residual carbon and formation of pores by released gases has been established. Change of propensity to foaming at introduction of various melts and param-eters of the obtained porous structure including dark gray foamed areas and sintered areas of brown color have been stud-ied.

 силикатное сырье плавень спекание натрий деполимеризация silicate raw materials flux sintering sodium depolymerization Работа выполнена в ЮРГПУ(НПИ) при финансовой поддержке Российского научного фонда в рамках согла-шения № 23-79-01004 «Исследование флюсующего эффекта фторидно-боратных смесей при термической обра-ботке теплоизоляционных алюмосиликатных композиций» (руководитель – Гольцман Б.М.). The work was carried out at YRHPU (NPI) with the financial support of the Russian Science Foundation under Agreement No. 23-79-01004 “Study of the fluxing effect of fluoride-borate mixtures during thermal treatment of heat-insulating aluminosilicate compositions” (supervisor - Goltsman B.M.).

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