Method for producing nano-magnetic FeO particle by iron extracted and utilized in tin tails

Abstract

Production of magnetic nano-Fe3O4 by iron in tin tails is carried out by extracting while separating out iron element by wetting metallurgical technology, reduction-chemical co-depositing to obtain magnetic nano-Fe3O4, extracting while controlling hydrolytic temperature, ageing, secondary depositing to obtain high-purity ironic hydroxide deposits and surface coating by surface activator to obtain Fe3O4 grain with grain size<10nm. It is efficient and can obtain fine and uniform grain size. It can be used for magnetization, catalytic and biological industries.

Description

technical field The invention belongs to the technical field of comprehensive utilization of mine tailings and preparation of nano-magnetic materials, and in particular provides a method for extracting iron elements rich in mine tailings and preparing nano-magnetic Fe 3 o 4 particle method. Prepared Fe 3 o 4 The particle size is uniform and fine and has superparamagnetism. Background technique Mineral resources are a kind of non-renewable resources. With the increasing demand for mineral resources in social development and the continuous development of mineral resources, mineral resources are increasingly depleted. At the same time, the harm to the environment caused by the development of mineral resources has made people realize the importance of resource protection, environmental protection and utilization for sustainable social and economic development. A large number of facts show that mine tailings, as a secondary resource, must be comprehensively utilized both in...

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Problems solved by technology

However, the use of iron extracted from tailings to prepare nano-magnetic materials is still blank.

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