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Bonding Dust with Environmentally Safe Compositions on Open Dust-Forming Surfaces in Coal Producing Enterprises

S. Kovshov, A. Erzin, V. Kovshov

Abstract


To struggle with dust, as different physical and chemical technologies it’s recommended to use dust-bonding compositions based on high-molecular compounds (HMC), surface-active agents (SAA), different types of petroleum products, and salts. But in practice, only few of them are applied. Very often environmental and sanitary-hygienic physical features of their action are not considered. Also, a significant problem is the absence of the system of complex assessment of physical and chemical action of dust-bonding compositions.
In most current physical models of dust formation, the changes in the interaction power of dust particles are not considered when modifying their surface with chemical substances. Such approach significantly changes the real scientific picture of experiments as it contradicts with empirical facts and doesn’t allow describing the actions of agents with different nature for dust bonding.
In article the dependence of dust bonding features from the level of polarity and molecular weight of plastic binders, the presence of individual functional groups of polymers and SAA, the diameter of salt cations is established; assessment of environmental influence of dust bonding agents is given in respect to the processes of biological recultivation; a complex indicator for selecting dust bonding agents is given, that represents a linear combination of individual indices of adhesive and environmental action of agents and indices of economic assessment of their application; a new scientific and methodological approach to compiling compositions of dust bonding agents is developed.

Keywords


dust, chemical methods, complex indicator, dust formation, dust bonding, on high-molecular compounds, surface-active agents, salts.

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