Abstract
The study demonstrated the efficiency of using the cascade reaction method applied to polymineral systems treatment, including technogenic waste of apatite nepheline ore. The conditions for minerals decomposition by sulphuric acid, content, and properties of forming solid phases have been researched. The sequence for carrying out production operations has been defined; the parameters and their operation modes were optimized. It is shown that by gradually increasing the sulphuric acid concentration and temperature the process can be carried out stepwise so that the products of one reaction participate in another reaction. This method provides complete use of initial mineral wastes and conversion of components in the form of wide range of useful products.
Highlights
The necessity for the rational use of mineral resources is caused by their scarcity and non-reproducibility
The level of mineral waste decomposition was determined from different solubility of the minerals in sulphuric acid
The alternation of chemical and physical reactions allows effecting process with preparation of intermediate and final product according to low waste technology
Summary
The necessity for the rational use of mineral resources is caused by their scarcity and non-reproducibility. Waste deposits deprive useful area from economic circulation, and represent the pollution sources of air, soil, underground, and surface water (Branwart, and Malmstrom, 2001; Stewart et al, 2003; Broadhurst & Petrie, 2010; Young et al, 2000; Norgate et al, 2007). In this regard, the researches on waste disposal followed by obtaining the new types of inorganic materials are of current interest. Mineral wastes are processed to recover the most valuable component not contributing to the complete waste disposal and slightly decreasing the environmental load
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
