Placer gold is the ancient and modern history, major deposits in the world gold production, but after thousands of years of mining, ore-rich and more have been exhausted, and now mainly dominated gold mine, gold is produced in the bottom of the riverbed Bay song or low-lying areas, mixed with sand and stone, after washing out of gold. Shakin originated in mine, is due to the gold ore out of the ground slag machine maintenance, wind and rain after a long, weathered and cracked rock, lode gold will accompany sediment from sailing down, natural stone in the sand sedimentation in the river bottom or gravel deposited gold layer below, thus forming alluvial gold. Shakin features are: particle sizes Cinder machine, big as beans, small sand-like shapes. Color due to the level of different fineness, over ninety percent of red yellow, eight became yellowish-proof slag machine, seven became greenish yellow due to backward technology, low efficiency and effectiveness of the cut-off grade of ore mined set at 30%, that is Only 30% grade iron mining resources have value. With the development of science and technology and technical equipment, and improve the level of beneficiation technology, many of our desire to break this definition of mine, some 25 percent above the magnet iron objects are classified as available for mining, thus greatly increasing the the amount of resources available for development and utilization. In addition, some complex geological conditions, roof underground ore difficult to manage in the past can not be mined, but through technical research mining method, also have become a target for exploitation, and greatly increased the recoverable reserves explosion Grilled slag machine _ Slag _ Crawler Cinder machine 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!