METHOD FOR PRODUCING COPPER CONCENTRATES FROM COMPLEX COPPER ORE USING LEACHING AND PRECIPITATION

摘要

The present invention relates to a complex copper ore beneficiation method using leaching and a precipitate. According to the present invention, the complex copper ore beneficiation method for manufacturing a copper concentrate from a copper complex ore including copper containing a mineral, and a gangue mineral including talcum comprises: a talcum removing step for removing talcum since talcum and copper containing a mineral are separated by sinking the copper containing a mineral into an inside of pulp and floating the talcum through ore dressing by floatation about a copper complex ore passing through a crushing step and a smashing step; a copper leaching step for leaching copper inside copper containing a mineral by inserting an acid inside pulp including a copper complex ore where talcum is removed; a copper precipitate step for forming copper sulfide by injecting a sulfide precipitant into the pulp where copper is leached; and a copper ore manufacturing step for separating copper sulfide by floating copper sulfide with hydro phobic properties through a floatation about pulp, and sinking other gangue minerals into an inside of pulp. [Reference numerals] (AA) Copper complex ore; (BB) Crushing and smashing; (C1) Talcum removing; (C2) Foaming agent : oil; (C3) Foaming agent : MIBC; (DD) Float product : talcum; (EE) Sink product; (F1) Copper leaching step; (F2) Leaching agent : an inorganic acid (H_2SO_4, HNO_3, and HCI etc.); (F3) Amount used : 2-3 equivalent comparing with contents of a copper ore; (G1) Copper precipitate step; (G2) Precipitant : a sulfide precipitant (Na_2S, CaS, and (NH_4)_2S etc.); (G3) Amount used : 1-3 equivalent comparing with contents of a copper ore; (H1) Manufacture a first concentrate; (H2,K2) Collector; (H3,K3) Xanthate; (H4,K4) Foaming agent; (II) Concentrates 1; (JJ) Tailing; (K1) Manufacture a second concentrate; (LL) Concentrates 2; (MM) Middling