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    • 4. 发明申请
    • NEW IN SITU DESULFURIZATION SCRUBBING PROCESS FOR REFINING BLISTER COPPER
    • 新型脱硫硫化铜精炼清洗工艺
    • WO2002075006A2
    • 2002-09-26
    • PCT/CA2002/000336
    • 2002-03-08
    • NORANDA INC.
    • ZAMALLOA, ManuelTREMBLAY, YvanCOURSOL, PascalCARISSIMI, Eva
    • C22B
    • C22B15/0097C22B15/0028C22B15/006
    • A novel process for refining high or low impurity blister copper containing S, As, Sb, Pb, Ni, Bi, Se, and/or Te to anode quality by means of a solution containing sulphates and alkali oxides is provided. More specifically, the process comprises the steps of (1) injecting air/O 2 gas mixtures in the presence of an alkali source, over a period of time sufficient to complete the sulphur removal stage, with the innovation of removing the SO 2 in situ, thereby forming an effective amount of a molten alkali sulphate on top of the copper bath, the temperature in the bath being maintained between 1100-1300°C; (2) adding and/or injecting molten or solid alkali sulphates together with basic oxides or carbonates into the copper bath to promote the in situ scrubbing of As and Sb into a solution containing sulphates, while the dissolved oxygen in copper increases from 0.1 to 0.6 wt%; (3) increasing the level of oxygen in the copper to remove the remaining impurities into a molten solution of Cu 2 O and/or Cu 2 O-CaO, while the molten sulphate and oxide phases co-exist as two immiscible liquid layers of slag; and (4) skimming both the sulphate and oxide slag layers prior to commencing de-oxidation.
    • 提供了一种通过含有硫酸盐和碱金属氧化物的溶液将含有S,As,Sb,Pb,Ni,Bi,Se和/或Te的高或低杂质泡罩铜精制成阳极质量的新方法。 更具体地,该方法包括以下步骤:(1)在碱源存在下,在足以完成除硫阶段的时间内喷射空气/ O 2气体混合物,同时创新地将SO 2原位除去,从而 在铜浴的顶部形成有效量的熔融硫酸盐,浴中的温度保持在1100-1300℃之间; (2)将熔融或固体碱性硫酸盐与碱性氧化物或碳酸盐一起添加和/或注入铜浴中以促进将As和Sb原位洗涤成含有硫酸盐的溶液,而铜中的溶解氧从0.1增加至0.6 %(重量); (3)提高铜中的氧含量以将剩余的杂质除去Cu2O和/或Cu2O-CaO的熔融溶液,而熔融硫酸盐和氧化物相共存作为两个不混溶的熔渣液层; 和(4)在开始去氧化之前撇取硫酸盐和氧化物渣层。
    • 5. 发明申请
    • PROCESS AND APPARATUS FOR THE CONTINUOUS REFINING OF BLISTER COPPER
    • 连续精炼喷砂铜的工艺和装置
    • WO99041420A1
    • 1999-08-19
    • PCT/US1999/002086
    • 1999-02-01
    • C22B15/00
    • C22B15/003C22B15/0047C22B15/006
    • Copper matte is processed to anode copper without oxidizing blister copper in an anode furnace. Copper matte, in either molten or solid form, is fed to a continuous copper converting furnace (10) in which it is converted to blister copper (14) and slag (15). The blister copper and slag collect in the settler region (13) of the furnace and separate into two phases, a blister copper phase and a slag phase (the latter floating upon the former). The converting furnace is equipped with means for stirring or agitating (17a, b, c) the interface of the blister copper and slag phases such that the sulfur content of the blister copper phase and the copper content of the slag phase are reduced.
    • 在阳极炉中将铜磨砂加工成阳极铜而不氧化泡罩铜。 以熔融或固体形式的铜锍进料到连续铜转化炉(10)中,其中它被转化成泡罩铜(14)和炉渣(15)。 泡状铜和矿渣在炉的沉降器区域(13)中收集,并分成两相,泡状铜相和渣相(后者浮在前者上)。 转炉具有用于搅拌或搅拌(17a,b,c)泡罩铜和渣相的界面的装置,使得铜铜相的硫含量和渣相的铜含量降低。