A new SME publication explains processing methods. The Society for Mining, Metallurgy & Exploration (SME) has announced the availability of Beneficiation of Phosphate Ore. This new publication examines various methods for processing phosphate rock. Phosphoric acid has a wide variety of uses such as the production of fertilisers, pharmaceuticals and detergents. It is also used to acidify foods and beverages such as colas, and as an etching solution in dentistry and orthodontics for cleaning and roughening the surfaces of teeth.

SME Executive Director David L. Kanagy stated, “This publication will help professionals and nonprofessionals understand phosphate processing. SME is pleased to include it in its ever-expanding library of mining industry scientific and technical support for members and nonmembers alike.”

This innovative publication covers a full range of processes including the beneficiation of:

•              Siliceous sedimentary phosphate ores

•              High-MgO sedimentary phosphate ores

•              Igneous phosphate ores.

The majority of phosphoric acid is produced by the wet process, in which phosphate rock reacts with sulphuric acid to produce phosphoric acid and gypsum. This wet process demands a phosphate rock feed that meets certain specifications to produce phosphoric acid efficiently and economically. Beneficiation of Phosphate Ore thoroughly explains the methods used in the beneficiation of different types of phosphate ores for use in the wet process. The mineralogical properties of the two major types of phosphate deposits, sedimentary and igneous, are described, along with the processing methods. The benefits and disadvantages of each process are discussed in detail.