共查询到20条相似文献,搜索用时 359 毫秒
1.
2.
我国的金矿物约49种(包括变种和未定名矿物).经济矿物主要是自然金和银金矿,少数矿床有金银矿、碲金矿、针碲金银矿、碲金银矿和黑铋金矿等.上述金矿物可分为四大类和十五种类型.文中对各种矿物的主要特点作了简要介绍. 相似文献
3.
4.
运用地质统计学理论,建立了矿床数学经济模型,用于指导矿山资源的合理开发,取得了令人满意的成果。 相似文献
5.
多年来,斑岩型矿床在传统意义上被认为是铜和钼的主要来源.然而,斑岩型矿床成岩成矿地质条件复杂,矿化类型丰富,尤其是对一些大型-超大型斑岩矿床,均为多元素综合性的巨型矿床,除传统意义上的铜、钼等矿产外,非传统矿产的成矿-找矿潜力巨大,包括:金、银、锡、钨、铋、铅、锌、铼、铀、钴、硫、硒、碲、铂族元素、磁铁矿等,金红石和稀有金属如钽、铌等也值得关注.开展斑岩型矿床成岩成矿地质背景、矿床地质特征与非传统矿产矿化富集分布规律研究,总结斑岩型矿床非传统矿产资源潜力预测评价标志,指导找矿预测与资源潜力评价,具有重要的理论价值和现实意义. 相似文献
6.
7.
通过地勘、生探和开采资料,对高石咀石英岩的资源储量作了对比分析,论证了续建或改建石英岩矿床在经济技术方面的合理性和可行性。 相似文献
8.
山西铁矿资源的概况与展望 总被引:2,自引:0,他引:2
阐述了我省铁矿资源的主要工业类型,探明储量及分布情况。从地质角度论述了主要矿床类型的成矿地质条件及矿床特征,并结合科研及地质找矿成果,对我省铁矿资源远景进行了展望。认为铁矿资源潜力较大。 相似文献
9.
碲的资源,应用与开发 总被引:2,自引:0,他引:2
介绍了碲的矿藏资源及其在世界各国的分布、产量和消费情况。详细地叙述了近年来碲在钢铁、有色金属、化工、电子和电气以及玻璃陶瓷、颜料和医药等工业方面的应用。并对碲工业到2000年的开发前景作了分析预测。 相似文献
10.
11.
12.
以某公司复杂碲铜物料为原料,采用双氧水氧化浸出-草酸沉铜-还原碲工艺回收复杂碲铜物料中的碲。研究了浸出温度、H2SO4浓度、双氧水的加入量、液固比、浸出时间对碲浸出效果的影响,草酸钠过量系数和反应温度对沉铜效果的影响以及亚硫酸钠用量对还原效果的影响。试验结果表明:在H2SO4浓度110 g·L-1、双氧水的加入量为理论量的1.2倍、液固比6∶1、浸出温度80~85℃、浸出时间4 h时,碲、铜浸出效果最好;在草酸钠为理论量的1.2倍、反应温度65~75℃时,沉铜效果最好;在亚硫酸钠用量为理论量的1.6倍时还原沉碲的效果最好。碲以碲粉的形式回收,铜以草酸铜的形式回收,碲、铜的回收率分别为98.5%和98%。 相似文献
13.
为研究碲元素对汽车曲轴用非调质钢38MnVS6硫化物形貌的影响,在冶炼过程中喂入70 m的Mn-Te线,加入0.012%Te,通过金相显微镜及扫描电镜对Φ380 mm连铸圆坯及Φ105 mm热轧圆钢的非金属夹杂物进行研究。研究发现,硫化物的形态在连铸坯横向与纵向的形态相同;MnS与MnTe形成共晶化合物,MnTe的存在改变了MnS的析出形态,可以使硫化物形态向短杆甚至椭球态转变,整体长度尺寸变小,平均长度由45μm缩短为15μm;加入0.012%Te后,MnTe与MnS两种夹杂物发生固溶,轧材夹杂物与铸坯相似,而未Te处理的圆钢硫化物随轧制的方向被明显的拉长。 相似文献
14.
《Hydrometallurgy》2001,59(2-3):233-239
Modern commercial application of biohydrometallurgy for processing ores became reality in the 1950s with the advent of copper bioleaching at the Kennecott Copper Bingham Mine. Early application entailed dump leaching of low-grade, low-value, run-of-mine material. Dump bioleaching has evolved into a commercially accepted option for bioheap copper leaching of higher-grade, higher value ores. This commercial practice is exemplified by at least 11 mining operations. Paradoxically, application of biohydrometallurgy in the pretreatment of refractory gold ores began with processing high value concentrates, using biooxidation-tank processes and was followed by extension to processing low-grade, lower value ores in heaps. Now, bioleaching has been extended to the commercial extraction and recovery of cobalt. Even with the current success of biohydrometallurgical applications in the mining industry, the real potential of biotechnology in mining remains to be realized. As confidence in commercial bioprocessing grows and experience extends the application's knowledge base, innovations and new commercial practices will emerge. Near-term future commercial applications will likely remain focused on recoveries of copper, gold and possibly nickel. Recent technical advances show that very refractory chalcopyrite can be successfully bioleached. Processes for copper recovery from this mineral will include both heap and stirred-tank reactors. Next generation technologies for pretreatment of refractory gold ores will be based on use of thermophilic bacteria for sulfide oxidation. For biohydrometallurgy to commercially advance, the microbiologist must work cooperatively with the practitioners of the technology for mutual understanding of operational limitations and practical constraints affecting the microbiological component. 相似文献
15.
D. R. Swinbourne G. G. Barbante A. Sheeran 《Metallurgical and Materials Transactions B》1998,29(3):555-562
Tellurium is a common minor constituent of copper anode slimes. The distribution of tellurium between the phases during slimes
smelting is an important consideration, both in terms of metal quality and the capture of the oxidized tellurium. In this
work, the oxidation by oxygen at 1100 °C of a silver-copper selenide matte containing 2 pct tellurium has been examined. The
distribution of tellurium between the phases was determined as the extent of oxidation increased, and the system was modeled
using a computational thermodynamics package. Oxidized tellurium was found to report to the slag, with none being removed
with the gas. The thermodynamic model predicted, to an acceptable level, the tellurium content of all phases as oxidation
progressed. It was used to show that oxidation by air rather than oxygen results in higher residual tellurium levels in silver
metal and that the lower the smelting temperature, the greater the extent of tellurium elimination from silver to the slag. 相似文献
16.
对从碲渣中提取二氧化碲的过程进行了试验研究,通过浸出、中和及二次沉淀等方法制取二氧化碲.结果表明,采用适当的浸出温度、时间和溶液的pH值,可得到纯度大于99%的二氧化碲. 相似文献
17.
18.
王俊娥 《有色金属(冶炼部分)》2017,(8):44-46
采用硫酸化焙烧—水浸脱铜—碱浸提碲—电积工艺回收铜碲渣中的碲,考察了NaOH浓度、温度等对碲浸出的影响,并对水解脱杂和碲电积工艺进行探索。结果表明,经过硫酸化焙烧、水浸后,铜脱除率为75%;电积产品碲纯度为99.90%,综合碲回收率约93%;金、银、铂和钯等贵金属进一步富集在碱浸渣中。 相似文献
19.
20.
铜阳极泥沉金后液是回收铂族金属铂、钯的重要原料来源。根据铜阳极泥氯化浸出过程稀贵金属可能发生的电极反应,分析了沉金后液中金、铂、钯、碲的存在价态,通过热力学计算绘制了金、铂、钯、碲的多形态组分图,并研究了单一金、铂、钯体系碲捕贵金属机制。沉金后液中稀贵金属金、铂、钯和碲的价态分别为Au3+,Pt2+,Pt4+,Pd2+,Te4+;金、铂、钯在沉金后液中随氯离子浓度的改变,以多组态络合物形式存在,Au(Ⅲ)几乎全部以[AuCl4]-组态存在,Pt(Ⅱ),Pd(Ⅱ)分别主要以[PtCl4]2-,[PdCl4]2-绝对优势组态存在,Pt(Ⅳ)以[PtCl6]2-为主、[PtCl4]和[PtCl5]-并存的多组态存在,Te(Ⅳ)随pH的变化形成不同酸根离子组态,在强酸性条件下主要形成H3TeO3+。钯单一体系还原碲捕集贵金属主要形成PdTe2,铂单一体系还原碲捕集贵金属主要形成PtTe2和Pt2Te3,金单一体系还原碲捕集贵金属产物主要为单质Au和Te,并有少量AuTe1.7物相。沉金后液中碲捕集铂、钯主要形成碲化物,碲捕集金主要形成单质金及少量碲化物。 相似文献