Development of a new rectifying agent for gold concentrate roasting-cyaniding process;

Contraposing to the disadvantages of several disposing processes of waste dry battery at home and abroad,this paper puts forword a new process to dispose of waste dry batteries with vacuum chloridizing roasting.

The asbestos slag are dealed with such processes as chloridizing roasting, digestion, light magnesium carbonate and white carbon can be prepared by carbonization and precipitation method separately.

Ga extraction from vanadium-leaching slag by chloridizing roasting is simulated using SMT; with combination of the traditional orthogonal design, regression analysis and nonlinear program,a new optimization experiment design has been made to obtain the optimum technological conditions with the minimum number of experiments.

The experimental results show that the ideal leaching results can be obtained by using two methods of CaO roasting-sulphuric acid leaching & CaO roasting-alkali leaching while processing this kind of deposit,and the leaching rate of vanadium is up to 74.

In this paper, the process of the cleaner roasting of shaly coal (CaO roasting) was studied.

Study on Process of Magnetizing Roasting-Low Intensity Magnetic Separation of Refractory Limonite in Guizhou

The arsenolite cinders were treated by the processes of oxidizing roasting-pyrolusite pulp absorption,magnetizing roasting-magnetic separation and acid leaching.

Technical processes such as high intensity magnetic separation,magnetizing roasting-magnetic separation,magnetic roasting-magnetic separation-reverse flotation were introduced and compared,thereafter,the process of magnetizing roasting-magnetic separation was adopted,and an iron concentrate with an iron grade and recovery of 58.