An electrochemical investigation on the prevention of staining of copper by benzotriazole. Corros Sci. 1963; 3 (1): 69–74. Crossref. Google Scholar. Bregman JI. …
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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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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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The aim of this study was the recovery of copper from the oxide copper ore by froth flotation and agitating sulphuric acid (H2SO4) leaching. The ore with 4.21% copper grade used in this study was ...
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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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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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A series of alkyl esters (methyl, butyl, hexyl, octyl) derived from carboxybenzotriazole (CBTAH) have been studied as inhibitors for copper. Coupon tests …
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U.S. Pat. No. 4,022,686 provides a flotation process for copper sulfide and copper oxide ores and for copper smelter slags, wherein benzotriazole or alkyl benzotriazole is added to...
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Continuing with the evaluation of copper oxide flotation using hydroxamate we now evaluate a rock that's 41% copper oxide with some lead oxide included.. Sample B: 1.8% Copper about 41% Oxide Cu. Rougher Tests: …
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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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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-mediated amino-alkylations have greatly broadened the utility of Mannich-type condensations; reaction of aldehydes with benzotriazole in the presence of …
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Tautomeric forms and atom numbering for 1,2,3-triazole and benzotriazole. In CHEC(1984) <1984CHEC(5)669>, Chapter 4.11 on 'Triazoles and their Benzo Derivatives' (64 pages) covered the literature through 1982 and was strongly …
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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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For example, self assembly and dynamics of alkyl ammonium surfactants on a montmorillonite surface (Heinz et al., 2007) and reactivity of an interacting hydroxyl radical on a …
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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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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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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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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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The recovery of these copper minerals by flotation or hydrometallurgy from ores, typically containing 0.5%TCu (open pit mines) and 1-2%TCu (underground mines) is of great commercial importance ...
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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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The bonding of benzotriazole—an outstanding corrosion inhibitor for copper—on reduced and oxidized copper surfaces is discussed on the basis of density functional theory (DFT) calculations.
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The discovery of benzotriazole dates back to the late 19th century, when its synthesis was first reported in 1889 by G. Schultz [9]. Initially, benzotriazole found industrial applications as a …
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b) N-Alkylation of Benzotriazole under Solvent-Free Conditions: An efficient, simple and solvent-free method for highly regioselective N-alkylation of benzotriazole in the presence of SiO 2, K …
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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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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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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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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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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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In the case of PDTC an alkyl ring (Fig. 1 b) rather than two separate alkyl ... Synthesis of 2-ethyl-2-hexenal oxime and its flotation performance for copper ore. Miner. Eng., …
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