Experimentalstudy of sulfur control in wheel steel has been done in Ma Steel and the results of experiments indicate thatthe adoption of feeding FeS wire after VD technique can effectively increase the recovery ratio and can stablycontrol the S content.

Our gravity separation research has been carried out in the Yunfu low-grade pyrite ore.

The phase speciations of trace thallium in the Yunfu pyrite ore are analyzed, including exchange phase, carbonate phase, oxide phase organic, sulfide phase and phase combined with quartz etc.

Study on ferrous sulfate microencapsulation;

Preparation of nanometer ferric oxide from ferrous sulfate by liquid phase method;

Preparation of highpurity manganese dioxide by leaching manganese ore with ferrous sulfate from by-product of titanium white;

Concept and practice for utilization of pyrite cinder;

Application of DynaWave scrubber to sulphuric acid production based on pyrite;

Environmental pollution and countermeasures in pyrite resources exploration;

This paper is aimed at introducing the authors' research of the spontaneous combustion characteristics of iron sulfides as a result of the reactions of hydrogen sulfide to the different degrees of humidity of the iron oxide black, iron oxide red and the iron hydroxide.

The oxidation heat of the iron sulfides is regarded as the main cause of tank fire.

Self-ignition accident by sour oil tank was analyzed,and the major reason was found to be thermal oxidation of iron sulfides generated from reaction of rust with hydrogen sulfide.