单─银精矿提取银的技术

某单─银矿经浮选所得精矿（％）：Ａｇｌ～２，Ｃｕ≈１，Ｐｂ４～７，ＣａＯ＋ＭｇＯ３０～３５，Ｓ４～７，Ｃ８～９。研究了氰化、硫脲、氨浸等方案对该精矿浸出效果，并从浸出指标等因素进行比较，认为焙烧─预浸─氨浸方案较好，银浸出率＞９７％，铜浸出率９５％。     

广西金牙金矿提取金之试验研究

广西金牙难处理金矿采用氧化焙烧－氰化工艺使金品位６．１２ｇ／ｔ的矿样浸金率达到８２．９０％，试验条件为：焙烧温度６５０℃，焙烧时间３ｈ，磨矿细度－３２０目占８４．６％，矿浆液固比２：１，氰化钠用量１ｋｇ／ｔ，氧化钙用量４ｋｇ／ｔ。氰化时间１８ｈ，矿浆ｐＨ＝１１￣１２。     

从含锰氧化银矿中回收银

某含Ａｇ氧化矿石中，Ｍｎ６．１９％，Ａｇ１５３．３８ｇ／ｔ，进行了浮选，全泥氰化搅拌浸出试验。结果精矿Ａｇ回收率为１１．５５％，全泥氰化试验Ａｇ浸出率（按浸渣计）１０．７９％。用ＳＯ２在液体介质中浸出Ｍｎ，然后将浸渣氰化提Ａｇ，其浸出率９４．６５％。     

氯化物介质矿浆电解法浸出硫化铜精矿

研究了在ＦｅＣｌ３ＨＣｌＮａＣｌ体系中直接电解浸出硫化铜精矿矿浆制取铜粉的工艺条件及机理。试验表明，在阳极初始溶液含Ｆｅ３＋６０ｇ／Ｌ、ＨＣｌ３０ｇ／Ｌ、ＮａＣｌ１５０ｇ／Ｌ，阴阳极电流密度分别为３５０和６００Ａ／ｍ２，１００℃的条件下浸出５ｈ，可获得铜浸出率９８．８％、渣含铜０．３４％、铜粉纯度９７．５％的结果；Ｆｅ３＋浓度是影响铜浸出率最显著的因素，阳极上发生的主要反应是Ｆｅ２＋的氧化；元素硫产生的机理是酸直接分解黄铜矿生成Ｈ２Ｓ，Ｈ２Ｓ溶解后再被Ｆｅ３＋氧化。     

一水硬铝石型铝土矿焙烧碱浸脱硅新工艺(Ⅲ)

通过对铝土矿焙烧后碱浸脱硅的研究,获得常压碱浸脱硅的工艺条件为：矿粉粒度〈０．０９７６ｍｍ占８０％－８５％,溶出时间２ｈ,ρ（Ｎａ２Ｏｋ）＝１００－１５０ｇ／Ｌ,Ｌ／Ｓ＝４,溶出温度９０－９５℃,搅拌速度９５０ｒ／ｍｉｎ,在此溶出条件下,回转窑焙烧矿的脱硅率可达５５．２０％,精矿Ａ／Ｓ＝９．９０,与加压溶出条件下取得的脱硅效果相当。     

难浸金矿加石灰焙烧-氰化浸金工艺方法

对丹寨含砷硫难浸金矿加石灰焙烧－氰化浸金研究表明,在最佳焙烧条件（６００～６５０℃,ａ＝１．１～１、．２,２ｈ,空气流量２００ｍｌ／ｍｉｎ）,可固定９９％以上的硫和砷,金氰化浸金率从直接氰化浸出的０％提高到９４％。加石灰焙烧是１种新的无污染预处理工艺。     

铂钯精矿中氯化银的浸出预处理研究

铜阳极泥分铜液所得铂钯精矿中的银主要以氯化银(AgCl)形态存在,可用氨水或亚硫酸钠作为浸出剂去除银。绘制了Ag⁺与NH3、SO2- 3配体组分图,结合电位-pH图分析表明,氨浸的pH值范围为7.7~13.5,亚硫酸钠浸出宜在中性或碱性条件下进行。优化条件实验结果表明,银的氨浸浸出率为95.3%,碲浸出率为14.9%,有微量铂、钯浸出;以亚硫酸钠为浸出剂,银的浸出率为97.3%,碲浸出率为11.5%,金、铂和钯均不被浸出。亚硫酸钠更适于作为铂钯精矿预处理除银的浸出剂。     

在型电站转子钢脱硫的工业性实验研究

针对二重集团公司钢包精炼炉（ＬＲＦ）完成的十炉冶炼转子钢的工业性实验进行了研究。实验结果表明：钢水初始硫「Ｓ」在０．０２０％以下炉渣采用下列组成：ＣａＯ＝５５％～６５％,ＳｉＯ２＝１３％～１５％,ＭｇＯ＝４．０％～６．０％,Ａｌ２Ｏ３＝３％～５％,ＦｅＯ〈０．５％;Ｆｅ２Ｏ３〈０．３％,Σ（ＦｅＯ）〈１．０％,Ｂ＝３．５～５．５和真空搅拌功εＭ·ｔ＝（７０～１００）×＾３Ｊ／ｔ可获得良好的脱硫效果     

用石硫合剂（LSSS）法从高铅金精矿浸出金

石硫合剂法是最新的无氰提金技术。石硫合剂法浸金机理是：电化学──催化机理。本文对石硫合剂法浸出高铅顽固金精矿样的工艺研究表明：石硫合剂法对顽固金精矿的适应性良好，采取二段浸出工艺，金浸出率可达９９％，为国内外大量顽固金矿的开发利用提供了条件和可能途径。     

湿法炼锌银锌精矿综合回收新工艺研究

以西南某锌厂的锌浸出渣的浮选银锌精矿为原料提出了综合回收湿法炼锌的银锌精矿中银、硫、锌的新工艺,确定了工艺参数,通过小型实验验证了工艺的可行性.该工艺分为:混酸氧化浸出、渣水浸、银浸出三步.最佳条件下锌总浸出率按液计99.8％,银总浸出率按液计87.3％,硫富集于渣中,情况较好.     

Acid-base behavior of cryptand 1, 4, 7, 10, 13, 16, 21, 24-octaaza-bicyclo [8, 8, 8] hexacosan-3, 8, 12, 17, 20, 25-hexone and complex formation

The bicyclic cryptand I, 4, 7, 10, 13, 16, 21,24-octaaza-bigcyclo [8, 8, 8] hexacosan-3, 8, 12, 17, 20, 25-hex-one (COBH) bearing diaminoethane groups along the eight-atom bridges was synthesized. The structure consists of discrete neutral macrobicyclic units; the two cycles share the two tertiary amine nitrogen atoms, which exhibit an endo-endo conformation. Three identical branches formed by I, 2-diaminoethane link the two tertiary amine groups. The protonation reactions ofcryptand (COBH) and its complex formation with copper (II) were investigated by potentiometry in water and in a DMSO/water (80: 20 in mass ratio) mixture as solvents. The cryptand acts as a bis-base through its two Nbridgehead and exhibits a strong cooperativity that favors the first protonation and makes the second one difficult (ΔpK≈5.0 ). An inward rotation of the amide groups to form hydrogen bonds accounts for this cooperativity. The interaction of COBH with copper (II) leads to several binuclear complex proton contents.     

Acid-base behavior of cryptand 1, 4, 7, 10, 13, 16, 21, 24-octaaza-bicycio[8, 8, 8] hexacosan-3, 8, 12, 17, 20, 25-hexone and complex formation

The bicyclic cryptand 1,4, 7, 10, 13, 16, 21, 24-octaaza-bigcyclo [8, 8, 8] hexacosan-3, 8, 12, 17, 20, 25-hexone (COBH) bearing diaminoethane groups along the eight-atom bridges was synthesized. The structure consists of discrete neutral macrobicyclic units; the two cycles share the two tertiary amine nitrogen atoms, which exhibit an endo-endo conformation. Three identical branches formed by 1, 2-diaminoethane link the two tertiary amine groups. The protonation reactions ofcryptand (COBH) and its complex formation with copper (Ⅱ) were investigated by potentiometry in water and in a DMSO/water (80: 20 in mass ratio) mixture as solvents. The cryptand acts as a bis-base through its two Nbridgehead and exhibits a strong cooperativity that favors the first protonation and makes the second one difficult (pK 5.0 ). An inward rotation of the amide groups to form hydrogen bonds accounts for this cooperativity. The interaction of COBH with copper (Ⅱ) leads to several binuclear complex proton contents.     

Supplemental Literature Review of Binary Phase Diagrams: Cs-In, Cs-K, Cs-Rb, Eu-In, Ho-Mn, K-Rb, Li-Mg, Mg-Nd, Mg-Zn, Mn-Sm, O-Sb, and Si-Sr

Recent literature on Cs-In, Cs-K, Cs-Rb, Eu-In, Ho-Mn, K-Rb, Li-Mg, Mg-Nd, Mg-Zn, Mn-Sm, O-Sb, and Si-Sr phase diagrams is reviewed in this article in order to update the 1990 compilation Binary Alloy Phase Diagrams, 2nd edition, by T.B. Massalski, et al. For some systems reaction tables and crystal structure data have been included, as well. Diagrams have been checked for consistency with rules for phase diagram construction and modified when necessary. In addition, diagrams needing more work have been identified.