A method of recovering quartz from iron tailings

Abstract

The invention discloses a method of recovering quartz from iron tailings. The method comprises the following steps that first of all, the high magnetic iron removal process is conducted on the iron tailings, and most of the Fe2O3 is removed in the tailings in order to reduce the difficulty of later treatment; after high magnetic iron removal, most of fine mud is removed by using a hydrocyclone, the impurity content is reduced, and the grade of SiO2 is improved; a ball mill is used to be combined with a high-frequency fine sieve to form a closed circuit, reprocessing for the fineness and quality sieving of quartz concentrate is conducted, and finally the quartz concentrate is obtained by using the anti-flotation process and the flotation process to remove impurities; and quartz finished products are obtained after the quartz concentrate is pickled. The method is suitable for the iron tailings with low grade and high impurity content, can fully recover the silicon dioxide in the iron tailings, and can effectively improve the added value of the tailings products.

Description

technical field [0001] The invention relates to the technical field of tailings treatment, in particular to a method for recovering quartz from iron tailings. Background technique [0002] In recent years, with the advancement of my country's industrialization, urbanization and modernization, the demand for mineral resources will continue to increase significantly, the contradiction between supply and demand of mineral resources has become increasingly prominent, and the pressure on the environment is also increasing. Actively promote the comprehensive utilization of mineral resources and industrial waste The recycling and utilization of renewable resources are also increasingly supported and advocated by national policies. Due to the limitation of beneficiation technology and equipment or unreasonable beneficiation process, the recovery rate of ore beneficiation is low, resulting in a large amount of useful components remaining in the tailings, making the development and uti...

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Problems solved by technology

In the traditional technology for the purification of iron tailings, only the iron in it is usually recovered. However, it is generally believed that iron and quartz are impurities in each other in the field. Recycling iron in iron tailings will inevitably lead to the recovery of iron. The secondary tailings contain too much silicon, and these secondary tailings are basically only used to produce bricks or other building materials in the traditional process, and the added value of the products is low, which also leads to the comprehensive utilization of iron tailings. low rate cases

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