KuzSTU has developed a technology for processing ash and slag waste from thermal power plants into liquid glass

1/03/2021

Scientists of Kuzbass State Technical University (participant of REC "Kuzbass") we have developed a technology for processing ash and slag waste, which is generated in large quantities during the operation of thermal power plants, into liquid glass for the further production of non-flammable building materials. The prototypes were successfully tested for strength.

The idea of producing liquid glass based on ash and slag waste is innovative. Its authors are the staff of the Department of Thermal Power Engineering of KuzSTU under the leadership of head Alexander Bogomolov.

Prototypes were obtained, they were tested and showed that it is possible to effectively use the obtained material in the construction industry. For example, when glass is added to paint, it creates a film and creates a fire-proof material that does not burn. It can also be used for gluing various materials, making coatings, putties, putties.

— The cost of products based on such liquid glass from ash is 1.5 times lower than its analogues on the market, - said Nikita Piskunov, a 4th-year student of the Institute of Energy and one of the project developers.

Traditionally, ash can be used as an active mineral additive in the production of dry building materials and concrete, replacing sand and mineral powder. Kuzbass scientists suggest its processing into a new type of product.

Since 2016, scientists of the Department of Thermal Power Engineering have been studying the chemical and mineralogical composition of ash, the properties of ash and slag waste, and developing a technology for producing liquid glass on their basis – a unique material that has many properties and is used in various fields. For the production of liquid glass, ash and slag materials are mixed with water and alkali in certain concentrations and heated for a long time at high temperature. After cooling, the material can be used in construction. Scientists have already agreed with power engineers who provide raw materials from the waste of the CHPP.