Еnergy-saving technology for processing of galvanic sludge with obtaining of radio-absorbing materials
The prospective for increasing of environmental safety level of industrial enterprises is considered as result of realization of energy- and resource saving technology for processing galvanic sludge by hydrophase ferritisation method. The possibility of obtaining Ni-Cu-Zn ferrites by processing of g...
Збережено в:
Видавець: | Kyiv National University of Construction and Architecture |
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Дата: | 2020 |
Автори: | , , |
Формат: | Стаття |
Мова: | Ukrainian |
Опубліковано: |
Kyiv National University of Construction and Architecture
2020
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Теми: | |
Онлайн доступ: | https://es-journal.in.ua/article/view/213160 |
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Репозиторії
Environmental safety and natural resourcesРезюме: | The prospective for increasing of environmental safety level of industrial enterprises is considered as result of realization of energy- and resource saving technology for processing galvanic sludge by hydrophase ferritisation method. The possibility of obtaining Ni-Cu-Zn ferrites by processing of galvanic sludge based on of ferritization technology has been studied. Influence of different technological parameters and activation methods of the ferritisation process: thermal and electromagnetic pulse at temperatures of 75°С and 20°С, respectively, on qualitative and quantitative phase content of ferrite sediments has been experimentally determined. The method of electromagnetic pulse activation provides the appropriate degree of heavy metal ions extraction – 99.96%, and also has undeniable energy advantages over thermal, since energy consumption is reduced more than 60%. The efficiency of electromagnetic pulse discharges with magnetic induction amplitude of 0.298 T and a pulse frequency from 0.5 to 10 Hz to obtain environmentally friendly ferrite precipitates has been confirmed. The use of Ni-Cu-Zn ferrite powder for production of coatings that shield the electromagnetic rays in the ultrahigh frequency range is proposed. Obtained sediments have maximum content of crystalline ferromagnetic phases of ferrites – more than 93%. The proposed resource-saving ferritisation process prevents environmental pollution, ensures efficient and rational use of raw materials and energy in industry, as well as allows to obtain marketable products from industrial waste. |
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