According to the analysis and research on the properties of local calcic clay and waste sulphoslag, batching of body onglazed ceramic tiles is designed by cross experimental design.

Main minerals in the aluminum sulfate tailings are kaolinite and bochmite AlOOH.

magnetic-separation Preparation of high quality magnetite concentrate from pyrite cinder by composite pellet reduction-roasting and;

Study on recovering Cu,Zn from pyrite cinder with bioleaching method;

The experiment and industrial application of recovering iron concentrate from pyrite cinder with vertical magnetic separator with pulsating vibration magnetic field were introduced.

Preparation of high purity ferrous sulfate from sulfuric acid residue

Iron trichloride purifying agent was prepared by using the low density Hydrochloric acid(density is approximately 20%-30%) recycled from Zunyi Titanium Factory to react with sulfuric acid residue.

A sulfuric acid residue is used for absorbing the chlorine emissions to make FeCl_3 in the laboratory,acid gas HCl within the chlorine emissions and Fe_2O_3 in the sulfuric acid residue are used for carrying on the counteraction reaction, oxidizability of Cl_2 is used for oxidizing Fe~(2+)in the sulfuric acid residue to Fe~(3+),making it to form product FeCl_3.

The article briefly introduced the technology and the craft of Pyritic slag depuration,discussed the major effect factor in make pre-roasted material of Strontium Ferrite by the depuration,and in the big production the final magnetic performance stably achieve Br:400 mT,Hcb:270 kA/m,Hcj:280 kA/m,(BH)m:32 kJ/m~3.

Aimed at utilization of iron resources in pyritic slag,the study on production of metallized agglomerate with pyritic slag through coal based DR process was conducted.