Centralisation of Cement Industry Causing Degradation of Environment in Beawar (AJMER)
DOI:
https://doi.org/10.47494/mesb.v25i.1334Abstract
In Beawar Cement manufacturing is a high volume process and correspondingly requires adequate quantities of resources, that is, raw materials, thermal fuels and electrical power. The main environmental (air quality) impacts of the manufacture of cement, in general, are related to the categories as: 1) Gases & VOCs:- Gaseous atmospheric emissions of CO2, NOx, SO2, Volatile Organic Compounds (VOCs) and others Carbon dioxide is released during the production of clinker, a component of cement, in which calcium carbonate (CaCO3) is heated in a rotary kiln to induce a series of complex chemical reactions. Specifically, CO2 is released as a by-product during calcination, which occurs in the upper, cooler end of the kiln, or a pre calciner, at temperatures of 600-900°C, and results in the conversion of carbonates to oxides.2) Dust:- Dust emissions originate mainly from the raw mills, the kiln system, the clinker cooler, and the cement mills. A general feature of these process steps is that hot exhaust gas or exhaust air is passing through pulverised material resulting in an intimately dispersed mixture of gas and particulates. The nature of the particulates generated is linked to the source material itself, that is, raw materials, clinker or cement.3) Noise:- Noise emissions occur throughout the whole cement manufacturing process from preparing and processing raw materials, from the clinker burning and cement production process, from material storage as well as from the dispatch and shipping of the final products.
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