Аннотация:Cement can be produced by various methods that differ by consumption of heat (fuel), electric power and natural physical resources. Cement production process itself is accompanied with emission into the environment of various substances and physical phenomena that can have a detrimental effect on ecology: dust, harmful and toxic gases, metal compounds, organic matters, etc. The highest amount of contaminants is emitted at Portland clinker burning stage.
When choosing indices that characterize the process itself and its impact on the environment it is proposed to use two kinds of markers.
Markers – the indicators of production method efficiency, generalized parameters of cement production process that have a considerable effect on the ecology. As this kind of markers it is proposed to use specific consumption of raw materials used for production of a ton of Portland clinker and Portland cement, specific consumption of heat (fuel) for burning a ton of Portland clinker and specific consumption of electric power for production of a ton of Portland cement.
And the other kind of markers – substances or physical phenomena formed during cement production process that are emitted into the environment and can have a significant detrimental effect on ecology and human health. As that kind of markers it is proposed to use emissions into the atmosphere of dust, nitrogen oxides (NOx), sulfur dioxide (SO2) and carbon oxide (СО). The report gives the justification of marker choice, proposals for frequency of marker control and their normative targets.