Nature protection technologies

3.4. Beneficiation and ash management

Part 3. ASH AND SLAG HANDLING

3.4. Beneficiation and ash management

3.4.1. Summary of coalash beneficiation in Russia

Ph.D. Putilov V.Y., Ph.D. Putilova I.V., Uchevatov A.V. MPEI(TU)

In the paper brief data on coal consumption, generation, processing and landfilling of ash and slag from power industry in Russia from 1990 till 2010 are given. The paper includes information on traditional applications of ash and slag materials in various branches of the Russian economy. The basic standards covering ash and slag handling problem with their modifications are reflected. Besides, technologies of processing ash and slag from power generation in Russia meeting the requirements of technical standards are resulted. Results of the market analysis of coal ash after its beneficiation are presented too.

Part 3. ASH AND SLAG HANDLING

3.4. Beneficiation and ash management

3.4.2. Improvement of the building-technical properties of ash-and-slag materials from heat power generation

F.L. Kapustin, V.M. Ufimtsev, Ural State Technical University–UPI named after the first President of the Russian Federation,

B.N. Eltsin, Yekaterinburg

B.L. Vishnya, Urals Power Engineering Company, Yekaterinburg

V.Y. Putilov, Moscow Power Engineering Institute (Technical University), Russia

Possible trends for improvement of the building-technical properties of dry ash characteristics formed as a result of solid fuel combustion at thermal power stations are presented. The results of application of different ash and slag benefication technologies to widen the trends and increase the volumes of their use in the construction materials and products are given.

Part 3. ASH AND SLAG HANDLING

3.4. Beneficiation and ash management

3.4.3. Prospects of producing high-quality ash and cenosperes from ashes of power coals having high L.O.I. on the basis of nanotechnologies

V.Y. Putilov, Moscow Power Engineering Institute (Technical University), Russia

K.V. Eremin, Omega Minerals Group, Germany

 Main stages of fly ash light fraction processing are listed. Main branches which use hollow ash cenospheres for the manufacturing of different types of high-technology products are presented. Estimations of the volumes of potential and existing world sales market of hollow ash cenospheres are given. Main factors influencing on physical and mechanical properties, chemical and mineralogical as well as particle size distribution of hollow ash cenospheres from coal combustion in power boilers are indicated.

Part 3. ASH AND SLAG HANDLING

3.4. Beneficiation and ash management

3.4.4. Experience and possibilities of ST complex technologies on fly ash beneficiation in view of the implemented project at Janikosoda power plant in Poland

J. D. Bittner, S. A. Gasiorowski, W. Lewandowski and B. Bruckner, Separation Technologies - LLC Technical Center, Needham, USA

 Separation Technologies LLC (ST) has been operating commercial fly ash beneficiation systems since 1995.  ST’s electrostatic beneficiation technology reduces the carbon content of coal fly ash, producing a consistent, low carbon ash for use as a substitute for cement. Fly ash with carbon levels > 25% have been used to produce ash with a controlled carbon level of 2 ± 0.5%.  A carbon rich product is simultaneously produced to recover the fuel value of the carbon.

ST’s newest project in Poland which includes a wet-to-dry ash collection conversion and an ST carbon separator was successfully commissioned in May 2010.