Abstract:Wangniangou iron deposit is a large size iron deposit which has been identified in China. It is in the initial stage of mining. The annual production of iron concentrate is 71.33 ten thousand tons, and the service life is 37.5 years. During the mine operation, a large number of solid wastes have been produced, such as waste rock, tailings, boiler ash and so on. Through analysis on gamma ray spectrum of waste rock and tailings, it is concluded that the radioactive content of waste rock and tailings is low. During the process of exploitation, smelting and comprehensive utilization of solid wastes, it will not cause radioactive harm to human body and the environment. Through analysis on the experimental results of the toxic leaching of waste rock, tailings and boiler ash, it is concluded that waste rock and tailings are typeⅠ general industrial solid waste. The storage field should be classified as class Ⅱ general industrial solid waste, and the storage field should be carried out according to class Ⅱfield requirements. The leached water will not lead to deterioration of groundwater quality and soil pollution. In this paper, lithologic composition, main mineral characteristics and uses of main solid waste (waste rock and tailings) have been analyzed and studied. According to previous results of mine utilization, concrete direction of comprehensive recycling has been put forward, such as construction materials, subgrade fillers, glass production materials, abrasive materials, ceramic materials, cement and stone. Ash production raw materials, soil amendments or fertilizers, chemical raw materials and so on.
