| 摘要 |
Method for the secondary fusion aluminum slags treatment for obtaining finished goods intended for agricultural, domestic and industrial use comprising the treatment of the aluminous material with concentrate sulfuric acid for obtaining aluminum sulfate, characterized in that the aluminous material comes from slags fed in lots of finite-dimension in a plant of treatment of aluminum slags and comprises aluminum oxides present for at least 30% in weight, and in that it comprises: a) a first step of separation of the metals present in the slags, with known methodologies, for obtaining powders of metals as Fe, Cu, Zn, Ni and for obtaining an aluminous component in the form of aluminum grains; b) a following step of treatment of the aluminous component, with sulfuric acid for obtaining aluminum sulfate in solution and/or in form of crystals; c) a following step of obtainment of a solid residual portion, deriving from the preceding step of treatment of said aluminous component, apt to be used as a refractory material in applications with thermal character. |
