Structural Modification of Xanthate Collectors To …
copper-activated sphalerite, particularly against pyrite in alkaline media, as well as being effective in acidic circuits.4−7 Alkyl thionocarbamates were produced by Cytec (5100 series). …
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Benzotriazole and tolyltriazole derivatives for corrosion mitigation
Use of an anticorrosion composition for preventing metal corrosion in an aqueous system comprising a brine and having an acidic pH and being in contact with a metal, wherein the …
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US5746947A
An alkylbenzotriazole, in combination with mercaptobenzotriazole, tolyltriazole, benzotriazole and/or 1-phenyl-5-mercaptotetrazole, is used to inhibit the corrosion of metallic …
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Benzotriazole: An overview on its versatile …
On the basis of the structure of 4,5,6,7-tetrabromo-1H-benzotriazole (TBBt), a highly selective inhibitor of protein kinase 2 (CK2) [63], bromo-, chloro- and methyl-analogues of benzotriazole and their N-alkyl derivatives (21a–g) …
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Review of corrosive environments for copper and its …
This review paper deals with corrosion of copper and its alloys in corrosive environments and their corrosion inhibitors. The main corrosion inhibitor…
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Inhibition of copper corrosion by 1,2,3-benzotriazole: A review
Benzotriazole (BTAH) is one of the best corrosion inhibitors for Cu and its alloys. It is effective in preventing copper corrosion under stationary as well as dynamic conditions. Its …
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Adsorption of 5-alkyl-3-amino-1,2,4-triazoles from aqueous …
According to some data, amino-substituted of 1,2,4-triazole (TA) may exceed BTA in the effectiveness of copper protection in neutral aqueous solutions [4, [18], [19], [20]].It was …
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Flotation of Gold and Gold-Bearing Ores
Many copper flotation plants around the world, and particularly those in the Americas, have enough gold in the ore to ensure that special attention is given to maximize the …
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Benzotriazole
4.01.11.6 Corrosion Inhibition. Benzotriazole and its derivatives have found widespread use as corrosion inhibitors for copper and its alloys. A huge number of patents have appeared since …
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Copper Flotation
Although basic porphyry copper flotation and metallurgy has remained virtually the same for many years, the processing equipment as well as design of the mills has continually been improved to increase production while …
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Alkylbenzotriazole compositions and the use thereof as copper …
An alkylbenzotriazole, in combination with mercaptobenzotriazole, tolyltriazole, benzotriazole and/or 1-phenyl-5-mercaptotetrazole, is used to inhibit the corrosion of metallic …
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Flotation of mixed copper oxide and sulphide minerals with …
Until recently, flotation of copper oxides would normally have been conducted in distinct campaigns to produce a copper concentrate which may not be saleable under existing …
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Benzotriazole: Much More Than Just Synthetic Heterocyclic …
Some alkyl derivatives of benzotriazole such as 5-hexyl-1,2,3-benzotriazole 90a, 5-dodecyl-1,2,3-benzotriazole 90b, and [5-(1-undecyl)dodecyl]-1,2,3-benzotriazole 90c were …
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An evaluation of hydroxamate collectors for malachite flotation
Flotation experiments were conducted on a synthetic malachite ore prepared by mixing 10 g malachite with 90 g quartz. All flotation tests were carried out using a 1.5 L Denver …
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a1349-Benzotriazole-An effective corrosion inhibitor for …
Dipping copper and copper alloys into a solution or dispersion of soluble fer- ricyanides and a benzotriazole derivative for 0.5 to 30 minutes arrests corrosion and tarnishing.
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Two New Structures of Hydroxamate Collectors and …
Cytec has developed and patented a range of alkyl hydroxamates as flotation collectors for oxidised base metal sulphides, metal oxide minerals and precious metals. This paper …
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One-Pot Facile Synthesis of Exclusive N1-Alkyl …
Limitations of these procedures in combination with our ongoing research on benzotriazole mediated novel synthetic methodologies [26-37] prompted us to envision a novel, simple and facile protocol for the synthesis of a variety of N 1 …
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Adsorption of 5-alkyl-3-amino-1,2,4-triazoles from aqueous …
5-Alkyl derivatives of 3-amino-1,2,4-triazole (5-alkyl-3-AT), when alkyls are undecyl-, nonyl- heptyl-, pentyl- and methyl-, are capable of forming passive layers on the copper …
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Alkyl-benzotriazole derivatives as inhibitors of iron …
Keywords: aliphatic chain, benzotriazole, copper, iron. Received: January 27, 2015. doi: 10.17675/2305-6894--096-107 Introduction 1,2,3-Benzotriazole (BTA) is one of the …
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Some Benzotriazole and Benzimidazole Derivatives as
The 2D structures of the synthesized derivatives of N-alkyl benzotriazole and N-alkybenzimidazole, as well as the control (fluconazole), were sketched in the ChemDraw …
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Alkyl-benzotriazole derivatives as inhibitors of iron and copper …
Alkyl derivatives of benzotriazole (1-12 carbon atom long alkyl chain) were tested as inhibitors of pure iron corrosion in sulphuric or hydrochloric acid at 25°C and pure copper …
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Akira Arakatsu Inventions, Patents and Patent Applications
Abstract: A flotation process in which copper ores or copper converter slags are ground and firstly have added thereto benzotriazole or alkyl benzotriazole as an activator and secondly one or …
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Hydroxamate for Copper Oxide Flotation
Here is a comparison of two Hydroxamate Collectors used for the flotation of Oxide copper, namely CTC3 from OXFLO and AM2 (AKA Rinkalore) from AXISHOUSE. This report contains a comparison of the scoping test-work …
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Flotation Guidebook
The flotation reagents listed in this book are current as of June 2009. The user ... 6.2 Copper Ores 22 6.3 Low Grade Copper-Gold Ores 23 6.4 Lead-Zinc Ores 24 6.5 Copper-Zinc Ores 24 6.6 …
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A Review of the Flotation of Copper Minerals | International …
L. Evrard and J. DeCyper, "Flotation of copper-cobalt ores with alkyl hydroxamates," in Proceedings of the 11th International Mineral Processing Congress, Cagliari, 1975. D. …
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Flotation of copper oxide minerals: A review
In this paper, we have reviewed the surface properties of common copper oxide minerals and summarized application of direct flotation, sulfidization flotation, and activation …
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Alkyl-benzotriazole derivatives as inhibitors of iron and …
5-Alkyl derivatives of benzotriazole (1–12 carbon atom long alkyl chain) were tested as inhibitors of pure iron corrosion in sulphuric or hydrochloric acid at 25°C and pure copper corrosion in …
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Inhibition of copper corrosion by 1,2,3-benzotriazole: A …
It has been known since 1947 [5] that 1,2,3-benzotriazole (BTAH, C 6 H 5 N 3) is an effective corrosion inhibitor for copper and its alloys by preventing undesirable surface …
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Influence of the alkyl chain on the protective effects of 1,2,3
In the first part of the work, the influence exerted on benzotriazole (BTAH) inhibiting efficiency by the length of the aliphatic chain in position 5 of the aromatic molecule has been …
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A Review of the Flotation of Copper Minerals
A quantitative analysis has enabled to link copper flotation response to the type of copper bearing minerals and physiochemical parameters such as redox potential (Eh), dissolved oxygen (DO), …
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