There is actually no cement plant in the world which has not yet used alternative materials for cement production, or at least tested their utilization. The reasons for this lie in the improved cost-effectiveness of the manufacturing process and in the reliable, low-cost and environment-compatible utilization of waste. Utilization of alternative materials in cement plants is much more advantageous than other methods of utilization or disposal : Natural resources are saved Valuable primary fuels such as oil, gas or coal are saved Non-combustible components or waste are used as raw material The total of emissions is reduced, since there is no additional procedure in waste incineration Avoidance of high investments in waste incinerator plants helps to lower waste fees Less space for landfilling is required The high quality of the final product, namely cement, is maintained. These advantages must be emphasized again and again, and explained to the general population and to those living near cement plants. It is also important to emphasize the constraints under which alternative materials can be used in cement plants with a sense of responsibility, environmental compatibility and sustainability. This will be the only chance to attain – and maintain – acceptance on a political level and, of course, with authorizing bodies and the public. The state of the art of alternative material use and the possible potential for development are described below.
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