process for industrial use of serpentinite antigorite.

摘要

"Process for industrial utilization of antigorita serpentinitos".The present invention relates to a process for industrial utilization of antigorita serpentinitos characterised by the fact that the rock is crushed to a particle size which allows complete liberau00e7u00e3The phase ferrous. The ferrous phase, consisting of magnesioferrita or magnetite, is separated from the matrix antigorita by a gravimetric method or magnetic.The antigorita is subjected to a hydrometallurgical process (leaching, acid producing is precipitated or colloidal amorphous silica.The solution is discarded in the hydrometallurgical process is used for the production of a magnesium salt, and the waste acid resulting from the production of salt is recycled.With continuously for the step of leaching antigorita (Figure 2).Alternatively, the antigorita can be burned for the production of forsterite and enstatita (Figure 3) or carbonetada for fixation of carbon dioxide.And getting a magnesite and free silica (Figure 4).