Sampling and Analysis of Copper Cathodes PDF Download

Author: W. M. Tuddenham
Publisher: ASTM International
ISBN: 9780803102170
Category : Crafts & Hobbies
Languages : en
Pages : 202

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Author: CJ. Roesch
Publisher: ASTM International
ISBN:
Category : Analytical chemistry
Languages : en
Pages : 188

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Book Description
A review is given of the methods and procedures used to sample and obtain chemical analysis for copper cathode at the Hawthorne Works of Western Electric in Chicago, Illinois. The discussion includes a description of the tests used to evaluate the quality of copper rod.

Author: CJ. Roesch
Publisher:
ISBN:
Category : Analytical chemistry
Languages : en
Pages : 3

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A review is given of the methods and procedures used to sample and obtain chemical analysis for copper cathode at the Hawthorne Works of Western Electric in Chicago, Illinois. The discussion includes a description of the tests used to evaluate the quality of copper rod.

Author: M. Lamela
Publisher:
ISBN:
Category : Analysis
Languages : en
Pages : 30

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Book Description
In order to devise a system for the sampling of copper cathodes using a mechanical punch it was first necessary to establish the distribution of impurities between individual samples and their location. To do this a cathode was divided into 171 pieces and each piece melted individually. Samples for analysis were then taken from the melt by suction through a 3.8-mm-ID glass tube and analyzed for impurities by emission spectrometry. The results obtained were summarized and studied statistically to determine the average content and standard deviation.

Author: ASTM. Committee B2 on Nonferrous Metals and Alloys
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: BM. Ludvigsson
Publisher:
ISBN:
Category : Cathodes
Languages : en
Pages : 15

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A Scandinavian working group with members from Boliden Metall, Elektrokoppar, Gränges Metallverken, Outokumpu, and Jernkontoret has been working on problems related to copper cathode quality. One of the main initial problems was finding an accurate sampling method for cathodes. In order to investigate the distribution of impurities in a copper cathode, one representative cathode was cut into 100 pieces. Each piece was given a position number and melted to give an analyzable homogeneous sample. The results indicated that the most reasonable sample would be a vertical, 50 to 100 mm wide, strip from the center of the cathode. The method used to obtain the sample was named the Vertical Strip Method (VSM). This sampling method has been used several times when processing cathode lots to rod. Statistical calculations have shown good and significant correlation between the mean values for most of the elements. The number of cathodes taken for sampling can be as few as 4 to 6.

Author: DH. Butler
Publisher:
ISBN:
Category : Absorption spectroscopy
Languages : en
Pages : 4

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Draft for Development 78 (DD78), "Higher Purity Copper Cathode", published by the British Standards Institution requires the support of agreed methods of sampling and analysis capable of showing whether the impurities specified are below the limits set. This paper summarizes the state of development of methods for sampling and analysis of high-purity copper cathode arrived at in the U.K. with international support. The aims of work in progress are discussed.

Author: RL. Dana
Publisher:
ISBN:
Category : Analysis
Languages : en
Pages : 9

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Book Description
New high-grade cathode specifications are including specific impurity limits to meet the more stringent requirements of the continuous cast rod market. Improved cathode sampling and analytical methods are necessary to confirm specification compliance. A better sampling plan is to collect either saw cuttings or cut sections from the cathodes which would then be melted and cast to obtain adequate impurity representation. Interest in obtaining lower impurity detection limits is leading to more support for the electrothermal and vapor generation methods of atomic absorption spectrometry. Even after the improved methods of sampling and analyzing copper cathodes have been tested and adopted, frequent interaction between the cathode producer and consumer will be important to monitor product quality compliance.

Author: W. M. Tuddenham
Publisher:
ISBN:
Category :
Languages : en
Pages : 184

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Book Description

Author: W.M. Tuddenham
Publisher:
ISBN: 9789904446541
Category :
Languages : en
Pages : 184

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Book Description