Abstract
In the first place, microscopic property, X-ray diffraction profile and oxidation property were measured as the specific property of the minerals. In the second place, influence of the specific property on the flotation behavior, particularly pH value of the pulp was investigated.
The main results obtained are as follows :
1) The crystallinity of pyrite from sulphur mine is lower than that of ordinary one. A difference of crystallinity is also recognized in pyrites from various sulphur mines.
2) The oxidation rate of pyrite increases with a decrease of its crystallinity.
3) As concerns pyrite, marcasite and their mixture, the converged equilibrium pH value of the pulp decreases and intensity of the convergence increases with an increase of the oxidation rate.
4) The converged equilibrium pH value of the pulp has a close connection with the critical pH value of flotation.
