Resource-Saving Technology of Complex Utilization of Dumps of Coal-Mining Productions with Reception of Alumina and Binders
Abstract: The article analyzes the content of raw materials in waste dumps of Donbass. Modern technologies for obtaining valuable elements from man-made deposits are considered. The rocks of the Donbass dumps contain a number of valuable rare earth metals, the content of which may exceed their clark in the earth's crust. The total content of valuable elements in the dump can be 230…260 g/t. The parameters of resource-saving technology of waste heaps processing with the use of the method of alkaline sintering of waste with limestone (mixture of argillite – kaolin – chalk) are substantiated. If the concentration of soda solution 100…120 kg/m3 Na2CO3, process temperature 70 °C for 10–30 min and the ratio of liquid to solid phase 1.5–2, the resulting aluminate solutions will have a concentration of 60–70 g/l and the degree of extraction alumina will be 88.6…92.7 %.
Keywords: waste heap, alumina, waste sintering, resource saving, leaching.
Pages: 54-60.
For citation:
For citation: Shapovalov, V. V.; Kozyr, D. A. Resource-Saving Technology of Complex Utilization of Dumps of Coal-Mining Productions with Reception of Alumina and Binders. – Text : electronic. – In: <em>Proceeding of the Donbas National Academy of Civil Engineering and Architecture</em>. – 2021. – Issue 2021-5(151) Engineering systems and man-made safety. – Р. 54-60. – URL: https://donnasa.ru/publish_house/journals/vestnik/2021/2021-5(151)/st_09_schapovalov_kozyr.pdf (date of access: 22.12.2024). – ISSN 2519-2817. (in Russian)
Issue 2021-5 (151)
Journal: Proceeding of the Donbas National Academy of Civil Engineering and Architecture
Publish house: Donbas National Academy of Civil Engineering and Architecture
Journal: Proceeding of the Donbas National Academy of Civil Engineering and Architecture
Publish house: Donbas National Academy of Civil Engineering and Architecture