Limestone is one of the superior mineral resources of China and has abundant retained reserves, which can fully satisfy the needs of national production and construction until 2010. With the development of the cement industry, iron and steel industry, light industry and architectural engineering, limestone will become more and more important. Because high-grade limestone is necessary for some industrial sectors but may not be necessary for others, the production of limestone mines of China has to be planned rationally to make full use of limestone resources, so that the utilization ratio of resources and economic benefit of mines can be further increased. Controlling pollution and improving environment are arduous tasks to be completed in the sustainable development of the Chinese cement industry. The cement industry has now become one of the major pollution sources in China and it may discharge more than 10 million tons of smokes and dusts every year. To solve this problem, restructuring should be implemented to eliminate a group of small enterprises that employ backward technologies, waste resources and pollute environment and have dim prospects.Henan Hongxing Mining Machinery Co., Ltd is the professional manufacturer of complete sets of mining machinery, for example,sand maker,ball mill Welcome all of you to visit our official website.spiral classifier price:http://www.hx-china.com/18.html With the rapid development of the new-type dry cement-producing technology, inclu-ding mainly the suspension type preheating and precalcining technology, more and more up-to-date high technologies will be lent to the entire cement production to save energy, lower costs and yield high-grade products, and meanwhile cement production will become a "clean process" by using the bag filter installation and electrical dust collection. Henan Hongxing Mining Machinery Co., Ltd is a joint-stock mining machinery manufacturing enterprise integrated in scientific research, production and marketing. It is located at the High & New Technology Industries Development Zone of Zhengzhou,China with an area of 50 thousand m2 which includes 15,000 m2 of standard heavy duty industrial workshop. Equipments are more than 160 pieces, including large and medium sized metal processing, riveting and installing equipments. There are more than 660 workers including 80 administrators with secondary and senior occupational titles and engineering technicians. In order to promote the competitive strength, the advanced technologies have been introduced from America, Germany, Japan and Australia, which established the international advanced production line, first-class modern testing base as well as research centers of sand maker, mill and mine-selecting equipment. Scientific management, advanced processing technology and innovative manufacturing theory make the company become the mining machinery manufacturing and exporting base in China.