Production of magnetite-containing composite based on iron hydroxide from underground waters to synthesize magnetic fluids

V. M. Makarov¹ - S. Z. Kalaeva¹ - M. A. Kruchina¹ - N. L. Markelova¹ - I. N. Zakharova¹ - A. A. Ezhov¹ - A. M. Shipilin²

¹ Yaroslavl State Technical University, 88 Moskovsky pr., 150999, Yaroslavl, Russia
² Lomonosov Moscow State University, 1 Leninskie Gory, 119991 Moscow, Russia

Abstract
A method to produce magnetite from the precipitates of iron hydroxide extracted from groundwater at the iron removal stations is considered. It is shown that as a result of the reduction process, with the use of carbon black waste, it is possible to produce magnetite with parameters similar to those of natural magnetite. Tables 3, Figs 3, Refs 4.