Environmental production : use of waste materials in cement kilns in China

Abstract

This report mainly talks about utilizing the cement kiln to dispose wastes. In China, there are huge amounts of wastes can be produced every year. China government pays more attention to the environmental protection. The government wants to dispose the wastes securely. The cement kiln is a good ‘place’ to take the wastes. The cement kiln has a high temperature, long remaining time, and can solidify the heavy metals, dispose the solid, semi-solid or liquid wastes. To dispose the wastes in cement kiln will not cause the new emissions. In addition, it is cheaper than building the new incinerator plants. So utilizing the cement kiln is good way to dispose wastes in environment and economy. Now China has more than 600 NSP cement kilns. If each kiln can dispose 100 000 tons wastes, China cement industry would dispose about 60 million tons wastes per year.