The PCS7 process control system is particularly introduced how to be employed in rebuilding the reductive iron plant based on the characteristics of the field bus.

Study on preparation of reduced iron powder using copperas;

An experimental study of carbon-reduction process in preparing reduced iron powder using V-Ti magnetite concentrate;

With some domestic hematite and magnetite ores as the raw materials,sponge iron powder with high performance can be obtained adopting Hgans C-H two-stage reduction technique,and hydrogen-reduced iron powder can be prepared after a further hydrogen reduction process.

Waste sulfuric acid of about 30%~35% concentration was heated to 90℃~100 ℃, then the iron slurry was introduced with stirring, followed by filtration, decolorization, crystallization and dehydration at 300℃, to give ferrous sulfate as a white powder; the purified ferrous sulfate was baked at 800C for 2-2.