DEVELOPMENT OF TECHNOLOGIES FOR RECYCLING AND BIOTECHNICAL RECOVERY OF ASH SLAGS WASTE
Zhalgasuly N. Kogut A.V. Estemesov Z.A. Ismailova A.A. Shaltabaeva S.T.
2021National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2021#6Issue 45064 - 70 pp.
There is a significant number of thermal power plants in Kazakhstan, as a result of which more than 500 million tons of ash and slag waste have been accumulated. Ware housing and storage of ash and slag causes a very significant impact on the environment in the area of their location. Therefore, it is highly relevant to address the issues of reducing the load on the environment by developing technologies for utilizing ash and slag, as well as biotechnical reclamation of the dusty surface of ash dumps. The article presents the results of a study of the physical and technical characteristics of a binder based on bitumen and ash and slag. The study of samples using a bitumen ash and slag binder showed that they meet the requirements of regulatory documents (ST RK 1225-2013) and have the following characteristics: ultimate compressive strength (after 28 days at 20ᵒC)-2.1 MPa; compressive strength (after 30 minutes at 50ᵒС)-1.9 MPa; average density-2.38 kg / m3 and water absorption-2.1%. A technology for producing a bitumen-ash-slag binder for the construction of road bases has been developed and its main parameters have been determined (the type and content of bitumen in the binder, the mixing time in the mixer and the density of the bitumen-ash-slag dough). A technology has been developed for biotechnical reclamation of ash and slag using new physiologically active drugs that stimulate plant growth from brown coals, which suppresses dust emanating from the surface of ash dumps. At a wind speed of 2-10 m / s, the amount of dust emitted decreased by 85%. The composition of an adaptogen preparation for processing seed material of wild plants has been determined. The selection of varieties of wild-growing plants was carried out directly in the locations of ash dumps. The time of laying and drying of seed material of wild-growing plants before sowing was determined. At the stage of ontogenesis of green mass, the optimal modes of spraying with a solution of the preparation for vigorous plant growth in the absence of moisture have been determined.
ash and slag , ash dump , binder , biotechnical reclamation , physical and chemical properties , technology
Text of the article Перейти на текст статьи
Institute of Mining named after D.A. Kunaev, Almaty, Kazakhstan
LLP «CELSIM», Almaty, Kazakhstan
LLP «MOK», Almaty, Kazakhstan
Institute of Mining named after D.A. Kunaev
LLP «CELSIM»
LLP «MOK»
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026