Manufacturing method of electrolytic manganese metal alloy lead-plastic composite anode

Abstract

The invention provides a manufacturing method of an electrolytic manganese metal alloy lead-plastic composite anode. The alloy lead-plastic composite anode comprises a conductive rod, a copper bar embedded inside the conductive rod and a male tab at the lower part, wherein the materials for fabricating the male tab comprise the following ingredients (by weight ratio): 0.06-0.10% of silver Ag, 0.1-0.4% of stibium Sb, 1-3% of stannum Sn, 0.3-0.6% of arsenic As, 0.1-0.3% of calcium Ca, 0.1-0.3% of strontium Sr and the balance of lead Pb. By adopting the method, an anode product is mainly prepared by optimizing an alloy element formula, and then a layer of tightly wrapped anti-corrosive protecting coating is formed on the three-item interface (the three-item interface refers to a juncture interface of an electrolyte surface, air and an anode plate) in an injection molding manner. Thus, corrosion to the lead alloy caused by chlorine and fluorine in the electrolyte at the three-item interface can be avoided.

Description

technical field [0001] The invention relates to a production method of electrolytic metal manganese, in particular to a production method of electrolytic metal manganese alloy lead-plastic composite anode. Background technique [0002] Electrolytic manganese is a small metal. China does not have an advantage in manganese resources. However, with the efforts of the employees and scientific research institutes of Chinese electrolytic manganese enterprises, it has developed rapidly and the technical level has improved very fast. By the end of 2013, the production capacity will reach 2.5 million tons, with an output of 1.6-1.7 million tons, accounting for more than 98% of the world's total. The current efficiency and metal recovery rate of China's electrolytic manganese metal ranks at the leading level in the world. In recent years, considerable progress has been made. China is not only a big producer of electrolytic manganese metal, but also a powerful producer. [0003] In re...

AI Technical Summary

Problems solved by technology

However, with the rapid development of the electrolytic manganese industry in recent years, the scale has continued to expand, and most of the domestic manganese ore resources have begun to gradually deplete. Higher, but because the chlorine and fluorine elements contained in the ore are relatively high, it is a challenge for the current domestic production process

At present, since the chlorine and fluorine elements cannot be effectively removed in the existing production process, during the electrolysis process, chlorine and fluorine elements form chlorine and fluorine ions in the electrolyte will seriously exceed the normal value, and will be combined with the lead alloy positive plate. A chemical reaction occurs to form lead chloride and lead fluoride crystals, which greatly impairs the service life of lead alloy anodes

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