Copper cathodes are produced by depositing copper on permanent titanic cathode plates while electrolytic refining of copper-sulphate solution. Due to the process and four-stage washing, final cathode copper is of high quality.
This cathode copper is intended for production of wire rod, wires from copper and copper alloys.
Cathode copper quality:
REQ Bi Se Te Sb As Fe Ni GOST 0,0002* 0,0002* 0,0002* 0,0004 0,0005 0,001 0,002** FACT 0,00007 0,00012 0,00005 0,00011 0,00007 0,00026 0,00013 REQ Pb Sn S O Zn P Ag GOST 0,0005 - 0,0015 0,01 - 0,0015*** 0,002 FACT 0,00027 0,00008 0,00046 0,0012 0,00024 0,00002 0,00058
*Bi, Se, Te give in sum less than 0.0003%.
**For sum of Ni, Zn, Si, Sn, Fe, Co.
*** For sum of P, Cr, Mn, As, Cd, Sb.
Actually, the total sum of normed impurities, except for oxygen, does not exceed 0.0030% when GOST 859-78 requirement is less than 0.0065%.
Cathodes meet Cu-CATH-1 grade of English standard BS 6017-1981.
Cathode dimensions are 4-6 x 860 x 1000 mm, average weight - 35 kgs. One side of cathode is smooth, another one is rough. The surface of cathodes is clean, well washed down. Cathodes are packed with 4 steel strips in stacks of 1600 kg average weight. The upper sheet is marked with the data: manufacturer's name, date of production, weight, manufacturer's brand, copper grade, cell number, stack number.
Cathode copper quality is approved by mean of contemporary laboratory equipment and methods: SHIMADZU atomic absorptive spectrometer, SPECTROFLAME atomic emission spectrometer, S-mat 550PC and O-mat 3500 gas-analysers of STROHLEIN, using SPECTROLAB S of SPECTRO for rapid analysis.
Quality System for copper cathode manufacture has been certified by both Russian GOSTSTANDART and German RW TÜV according to ISO 9002.
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