Due to backward technology, low efficiency and effectiveness Cinder machine maintenance, the cut-off grade of ore mined set at 30%, that is, only the iron grade of 30% or more of the resources have mining value. With the development of science and technology, technology and equipment, mineral processing technology to improve the level of slag machines, many of our desire to break this definition of mine, some 25 percent above the magnet iron objects are classified as available for exploitation, thus greatly increased the amount of resources available for development and utilization. Another slag machine configuration, some complex geological conditions, roof difficult to manage underground ore mined in the past can not be, but through technical research mining method, also have become a target for exploitation, and greatly increased the recoverable reserves of iron ore mined by the value of the stone GEOLOGY (burial depth, geological conditions) and the nature of the ore (type of iron ore, magnetic iron content, useful content dissemination size characteristics and other factors) affect the characteristics of different slag machine sale, big difference . 20% magnetite ore grade and now even a good resource, good mine, if it is not necessary to other types of iron ore mining. Cinder machine picture | Kunming Cinder machine | Gongyi City Xinhua Machinery Factory provided by Gongyi City Xinhua Machinery Factory. Gongyi City Xinhua Machinery Factory (www.gyxinhua.com) strong, credible, in Zhengzhou, Henan handling equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Xinhua machinery and you hand into the brilliant, for a better future!