Ash and Slag Waste as a Secondary Raw Material

Abstract

In the process of industrial corporation activities a lot of waste, which pollutes the atmosphere, is generated, for example ash and slag. In Tomsk region, by estimates, ash stores occupy about 600 hectares, which contain about 25 million tons by weight. In Russian thermal power-stations ash disposal areas there are about 1.3 billion tons of ash, and only 10% of it is used. That is why this problem is topical enough. In this paper the scheme of producing ash ceramic bricks and complex ash and slag waste processing is shown. Besides, profitability of the project is presented

Improving the Properties of Porous Geopolymers Based on TPP Ash and Slag Waste by Adjusting Their Chemical Composition

“…[ 19 ]. In view of the high content of aluminosilicate amorphous phase in the composition of ash and slag and their high dispersion, the method of processing ash and slag into geopolymers, which are a new class of materials that are hydraulic binders of alkaline activation, is promising [ 20 , 21 , 22 ]. They are glass–crystalline aluminosilicates consisting of [SiO 4 ] and [AlO 4 ] tetrahedra connected in series by bridging oxygen.…”

“…In this regard, the issue of ash and slag recycling in this region is relevant. Since geopolymer materials are highly frost-resistant and can withstand up to 150 thaw–freeze cycles [ 30 , 31 , 32 ], their use in road construction under permafrost and extreme climatic conditions is promising [ 22 ].…”

Influence of Aluminum Coating Technology on Industrial Waste Management

“…The issue of processing of sulfur-containing and ash-and-slag wastes of industrial enterprises remains unresolved. Ash and slag mixtures are widely used as aggregates and fillers in concrete for various purposes [3][4][5]. This is determined by the grain and chemical composition, as well as the physical and mechanical characteristics.…”

Effect of Electrophysical Impact on the Physical and Chemical Characteristics of Coal Ash From the Maikuben Deposit

“…The specific properties of ash and slag waste are used in the production of building materials (as additives in concrete, cement, bricks, etc.) [1,14,15], in the preparation of aluminosilicate and magnetic microspheres [1], silica [16] and alumina [17,18], in the extraction of rare metals [19][20][21][22][23][24].…”