580
Y. Sakata
product acid in the sulfuric acid process is caused. Almost all of Ca is processed in
the CF and BF and transferred to the slag. Most of Sb is dispersed in the crude lead.
They affect those processes in different ways in the refining circuit, but Ca and Sb
are controllable mainly by blending the raw material carefully. The alloy component
Sn is an element that circulates in the process, and there is a problem that the load
increases in the Harris refining process as lead electrode treatment increases.
Currently, in Japan, the supply and demand situation for the waste lead battery
has changed significantly, and the waste lead battery has become available at much
cheaper price than concentrate. Therefore, we are in need of increasing the waste lead
battery usage as soon as possible. We would like to clear these problems by promoting
research, minimizing the impact on quality and the surrounding environment.
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