共查询到19条相似文献,搜索用时 218 毫秒
1.
考查某含钴中间产物碳酸镍硫酸溶解所得硫酸镍溶液黑镍除钴和溶剂萃取法净化除钴的效果。黑镍除钴和溶剂萃取都能达到净化硫酸镍溶液的目的,得到符合电解沉积的阴极液。黑镍除钴需3段重复作业且黑镍制备成本高。溶剂萃取成本低、对环境友好,是比较理想的处理此含镍物料的方法。 相似文献
2.
3.
4.
对捕收剂的硫化法和碱法再生进行了研究。对用TC作捕收剂的镍钴离子浮选和铜镍钴载体矿浆离子浮选,采用碱法再生TC,TC再生率约为55%。对用TC作捕收剂的铜矿浆离子浮选,采用硫化法再生TC,TC再生率约85%。再生捕收剂浮选效果好。用稀硫酸溶解再生TC的镍钴渣及铜镍钴渣可基本实现镍与钴及镍与铜钴的分离。 相似文献
5.
对捕收剂的硫化法和碱法再生进行了研究,对用TC作捕收剂的镍钴离子浮选和铜镍钴载体矿浆离子浮选,采用碱法再生TC,TC再生率约为55%,对用TC作捕收剂的铜矿浆离子浮选,采用硫化法再生TC,TC再生率约85%,再生捕收剂浮选效果好,用稀硫酸溶解再生TC的镍钴渣及铜镍钴渣可基本实现镍与钴及镍与铜钴的分离。 相似文献
6.
1前言随着科技和生产的发展,世界各国对铜、钻、镍的需求不断增长。然而钢、钴、镍的资源却日益贫乏。我国是铜、钴、镍资源短缺的国家之一,尤其是钻、镍资源更为贫乏。另一方面,由于提取技术的限制,低品位铜、钴、镍资源,选矿尾渣、冶炼厂排放的烟道灰以及其他含铜、钴、镍的工业废渣被遗弃,不仅浪费了资源,同时也造成对环境的污染。因此,研究从这些废弃物中回收铜、钴、镍具有十分重要的意义。新疆克拉通克铜镍矿冶炼厂排放的烟道灰中含有大量有色金属成分,其中铜含量低的约3%,高的可达12%,镍含量低的为1%左右,高的达7%-8… 相似文献
7.
8.
应用新一代萃取剂Cyanex272进行钴镍分离的研究 总被引:1,自引:0,他引:1
Cyanex272是新一代在硫酸盐溶液中分离钴、镍的萃取剂。本文研究了各种因素对Cyanex272分离钴、镍的影响,探寻了Cyanex272在镍电解净液钴渣处理工艺和高冰镍精炼新工艺中的应用前景。 相似文献
9.
垣曲商城出土含砷渣块研究 总被引:2,自引:0,他引:2
采用偏光矿相显微镜、扫描电镜能谱分析等方法研究1993年垣曲商城出土的一块炉渣样品。该渣块含有砷铜合金颗粒、钴(镍铁)氧化物、钴的硅酸盐、含钴砷氧等物相。砷铜合金颗粒平均含砷7%~8%,有Cu2As和高银相及Cu2S相存在,砷铜合金颗粒周围有氧化亚铜和铜的硅酸盐等物相。能谱分析的结果显示含钴砷氧的物相中钴和砷的原子比为1∶1,由此推断该物相为钴的砷酸或亚砷酸盐(CoAsO4或CoAsO3)。渣块中的钴(镍铁)氧化物、钴的硅酸盐则是由完全脱去砷的钴氧化及氧化后造渣而形成。因此这一渣块应是使用砷钴(镍)矿物点炼砷铜合金的残留物,代表着一种人工添加含砷矿物配制砷铜合金技术的存在。 相似文献
10.
11.
采用氢氧化钠碱浸-碳分工艺处理废旧电池回收中间产物——铝渣, 实现了废渣中的镍钴锰与铝分离并分步回收。结果表明, 在反应温度200 ℃、氢氧化钠浓度6 mol/L、苛性比为5、碱浸5 h条件下, 碱浸液中铝浸出率可达97.70%, 镍钴锰浸出率小于0.23%; 碱浸渣经浸出-除杂-萃取后, 得到Ni、Co、Mn含量均大于100 g/L, Fe、Al含量均小于0.001 g/L的纯净硫酸镍、硫酸钴、硫酸锰溶液, 从而实现废旧三元锂电池中铝与镍钴锰的资源化高效回收利用。 相似文献
12.
13.
C.H. KöseY.A. Topkaya 《Minerals Engineering》2011,24(5):396-415
The research work presented in this paper determined the optimum conditions at which nickel and cobalt could be obtained at maximum efficiency from the column leach liquor of the lateritic nickel ore existing in Gördes region of Manisa in Turkey by performing effective hydrometallurgical methods. This column leach solution was initially neutralized and purified from its basic impurities by a two-stage iron removal process, nickel and cobalt were precipitated in the form of mixed hydroxide precipitate from the purified leach solution by a two-stage precipitation method called “MHP” and a manganese removal process was performed at the optimum conditions determined experimentally. By decreasing manganese concentration with this process to an acceptable level yielding at most 10% Mn in hydroxide precipitate, it was possible to produce a qualified MHP product suitable to the current marketing and standard conditions. The experiments conducted showed that by maintaining recycle leaching with sulfuric acid at which 95% of Ni-Co could be recovered from the precipitates, about 81% of Ni and 63% of Co in the lateritic nickel ore (9.72 kg Ni/ton of ore and 0.28 kg Co/ton of ore) could be extracted as mixed hydroxide precipitate by MHP process. 相似文献
14.
低品位红土镍矿还原焙砂氨浸试验研究 总被引:17,自引:1,他引:17
本研究采用选择性还原焙烧—氨浸工艺从低品位红土镍矿中综合提取镍、钴、铁,重点介绍了该工艺氨浸的试验研究。确定的最佳工艺条件为:NH3?∶CO2为90g/L∶60g/L,焙砂粒度-0.074mm占80%,液固比为2∶1(mL/g),浸出初始温度为25℃左右,浸出终点电位大于-100mV。综合试验的镍、钴浸出率分别为89.87%和62.20%。研究表明,在常温常压下采用氨浸法不但可以有效地回收镍、钴、铁,而且浸出剂可以循环使用,设备运行安全可靠,可取得较好的经济效益。 相似文献
15.
16.
17.
从低品位氧化锰矿中综合回收镍钴 总被引:2,自引:0,他引:2
研究了从低品位氧化锰矿经还原焙烧、硫酸浸出得到的含钴镍原料液中回收钻镍的工艺.结果表明:控制原料液初始pH值低于2有利于防止钴镍及锰形成氢氧化物沉淀而损失.分别以Na2S,BaS,MnS作为沉淀剂沉淀镍、钴,在pH值分别大于3.5,4,2时,钴镍的沉淀率分别达到97%,86%,99%以上.但Na2S,BaS会引入杂质,同时会因所需的溶液初始pH值较高而造成钴镍和锰的损失,因此不适宜作为回收钴镍的沉淀剂;而MnS在pH值小于2条件下可将98%以上的镍钴沉淀回收,且不会引入新的杂质及造成溶液中钴镍和锰的损失,因此MnS是从含锰溶液中回收钴镍的较合适的沉淀剂. 相似文献
18.
Cobalt is usually recovered as a by-product of copper and nickel processing, and only a small amount of cobalt is derived from laterites although a vast majority of cobalt resources in them. The exploitation of limonitic laterite containing high content of cobalt is becoming increasingly important. The mineralogy of a limonitic laterite ore was characterized by environmental scanning electron microscope (ESEM) and X-ray diffraction (XRD) in this paper. The results show that nickel occurs in goethite mainly, while cobalt is predominantly associated with manganiferous minerals. Thiosulfate is found to be able to selectively leach cobalt from limonitic laterite in the presence of sulfuric acid, and 91% Co, 22% Ni, 10% Fe are leached from an ore containing 0.13% Co, 1.03% Ni within the first 5 min at 90 °C under the conditions of 10 g/L sodium thiosulfate, 8% (w/w) sulfuric acid and 10:1 L/S ratio. The leaching kinetics of Mn and Co by acidic sodium thiosulfate solution can be characterized by the Avrami equation. In acidic solution, thiosulfate readily decomposes into sulfur and sulfur dioxide as intermediary reagents to reduce pyrolusite (MnO2) and goethite (FeOOH); therefore, nickel and cobalt associated with goethite and pyrolusite respectively are extracted due to reduction dissolution. Furthermore, cobalt is selectively leached over iron and nickel because pyrolusite is preferentially reduced by acidic thiosulfate rather than goethite. The novel process may give an alternative method to selectively recover cobalt as the primary product from limonitic laterites at atmospheric pressure. 相似文献
19.
我国独立开发的镍精炼新工艺已在新疆实际应用。经阜康冶炼厂选择性浸出提取后,金属化高冰镍原料中大量铜及贵金属进入了铜渣。在完成了阜康铜渣吹炼粗铜的试验研究任务之后,北京矿冶研究总院又制订了铜渣"焙烧—浸出—电解"方案,并进行了验证试验。证实了该工艺具有铜回收率高、浸出液较为纯净可直接电解、镍能综合回收、浸出渣率低和贵金属富集比高等特点。结合公司和阜康实际,最终推荐了焙烧、浸出方案。该方案已被新疆有关部门采纳,于1999年建成了国内能力最大的采用溶液电积工艺生产电解铜的车间(5000t电解铜/a),投产后经济效益显著。 相似文献