Ecological indices of manufacture of Portland cement clinker and production of the dolomite clinker

Vinnichenko, Varvara; Ryazanov, Alexander

doi:10.1051/matecconf/201711601020

Cited by 8 publications

(2 citation statements)

References 2 publications

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“…The results of the feasibility study for efficient application of high-strength modified concrete [22,23,24] and of high-strength rebars were adopted to the construction of 25storey cast-in-place residential houses Nos.9 & 10 in Bakalinsky residential area of Ufa. Actual discrepancy of data between theoretical technical and economical solution and actual expenses for materials at construction amounted to: about 4.5% for concrete and about 6% for rebars.…”

Section: Resultsmentioning

confidence: 99%

Resource-saving technologies for advanced concrete in the Republic of Bashkortostan

et al. 2018

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Properties of both organo-mineral superplasticized unmodified and modified concretes are considered, impact of workability of concrete and water-binder ratio on strength properties of concrete are analyzed herein. Gonsistent aggregate grading with minimum void, accordingly with maximum packed density under optimum content of dispersed particles in concrete is to be applied to make mortars and concrete with stable properties and less variations in values. The proposed solution enables to simplify proportioning as different combination of aggregates is not required for each proportion. Comparative analysis of various fillers being by-products and materials for making mortars and asphalt-concrete has been made. The results for reinforced steel consumption reducing together with efficient combination of higher grade concrete were considered at amending the “reinforced-concrete structures” section. Computational algorithms made under economic and mathematical methods to improve construction solutions over the reinforced concrete frame are given. Efficient engineering solutions to use high strength concrete and rebar that were applied in some facilities are proposed.

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Section: Resultsmentioning

confidence: 99%

Resource-saving technologies for advanced concrete in the Republic of Bashkortostan

et al. 2018

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“…Impurities of aluminosilicates, magnesium carbonate and quartz have a great influence on the properties of lime [8]. Waste coal enrichment (WC) contain these components together with organic [9][10][11]. Therefore, materials containing quartz and clay minerals can be used in the production of various binding materials and products based on them [12][13].…”

Section: Introductionmentioning

confidence: 99%

Influence of Organic Matters on the Calcium Carbonate Decarbonization Process

Vinnichenko

RIAZANOV

2019

MSF

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Pure calcium carbonate, chalk, and coal wastes are taken as starting materials. The Gibbs energy of calcium carbonate decarbonization reactions is calculated. By the method of thermodynamic analysis, the effect of carbon and its gasification products on the calcium carbonate decarbonization process is investigated. The intensifying effect of organic matter during heat treatment of calcium carbonate is shown. In addition to carbon, the decarbonization reactions are influenced by gases evolved as a result of the gasification of the organic part of the coal waste. It is theoretically proven that the organic component of coal waste contributes to lowering the temperature of the onset and end of the decomposition of calcium carbonate. To confirm the theoretical background, experimental studies of the behavior of mixtures during heating have been carried out. The effect of organic matter on decarbonization of pure calcium carbonate and chalk has been studied. Thermograms have shown that less caloric energy is required for the decarbonization of chalk than for the decarbonization of pure CaCO3. Organic transformations occur in the material layer, which contributes to intensive heat transfer. The products of thermochemical transformations of the organic mass increase the efficiency of the process of decarbonization of calcium carbonate using the waste of coal enrichment in the composition of the raw mix. The organic component of the waste not only reduces the amount of heat energy expended on the endothermic process of calcination, its presence in the raw material mix reduces the temperature of the process of calcination as pure calcium carbonate and chalk.

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Construction binders and environmental indicators of their production

Vinnichenko¹,

Ryazanov

Krot

2018

MATEC Web Conf.

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A comparative analysis of carbon dioxide emissions during the burning of Portland cement clinker, lime and gypsum was performed. The interrelation between energy indices and the emission of carbon dioxide is shown. The quantitative indices of atmospheric pollution in the manufacture of binders are given. Ecological expediency of production of gypsum and cement clinker in comparison with lime is shown. The article is made rough calculation of environmental pollution by carbon dioxide, which is produced and released into the atmosphere during the production of building binders. It was determined the directions of reducing the formation of gases during firing of the substances to reduce environmental pollution: decrease in endothermy of chemical transformations; reduction of the content of calcium and magnesium carbonates in the feedstock mixture; reduction of raw material moisture; reduction of fuel consumption for the process; increasing the technological efficiency of the process. It was determined the directions of reducing the formation of gases during firing of the substances to reduce environmental pollution. It is shown that carbon dioxide is released into the Earth’s atmosphere in the amount of more than three billion metric tons per year by enterprises that produce cement, lime, and gypsum.

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Ecological indices of manufacture of Portland cement clinker and production of the dolomite clinker

Abstract: Abstract. It is shown that the production of dolomite clinker in comparison with that of Portland cement is environmentally appropriate.

Cited by 8 publications

References 2 publications

Resource-saving technologies for advanced concrete in the Republic of Bashkortostan

Resource-saving technologies for advanced concrete in the Republic of Bashkortostan

Influence of Organic Matters on the Calcium Carbonate Decarbonization Process

Construction binders and environmental indicators of their production

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