Solid reducing agent for preparing electrolytic anode copper plate

Abstract

The invention discloses a solid reducing agent for preparing an electrolytic anode copper plate, prepared by 97-99% of low-sulfur anthracite and1-3% of low-sulfur candle coal used as raw materials, wherein the low-sulfur anthracite has S content with not more than 0.3% and volatile component content with about 8-12%; the low-sulfur candle coal has S content with not more than 0.2% and volatile component content with about 22-28%. The reducing agent disclosed by the invention takes the anthracite as a matrix and mixes the quantitative candle coal with proper volatile components, so that the reducing agent does not produce black smoke when performing reduction and contacting with copper water, reduces and deoxidizes cuprous oxide in the melted copper efficiently and fully due to proper stirring in the melted copper to prepare the anode copper plate. The reducing cost of the solid reducing agent is reduced by 60% in comparison with that adopting raw wood or saw timber, and the raw material can be supplied fully due to a wide source. The solid reducing agent has safety, reliability, little pollution and high cost performance.

Description

technical field [0001] The invention relates to a solid reducing agent, in particular to a solid reducing agent used in the preparation of anode copper plates in the electrolytic production of cathode copper. Background technique [0002] In the process of electrolytic production of cathode copper, the anode copper plate must first be prepared, specifically, the miscellaneous copper is heated and melted into copper water, and air is introduced to remove the impurities and valuable metals in the copper water by oxidation and slag removal, and then a reducing agent is added to remove the impurities in the copper water. Cuprous oxide is deoxidized and reduced to copper, and the anode copper plate is obtained through conventional post-treatment. At present, the above-mentioned reducing agents are logs, heavy oil, diesel, sawdust, ammonia, natural gas, etc. Among them, logs have better comprehensive performance, but they consume a lot and destroy forests, so they have been obviou...

AI Technical Summary

Problems solved by technology

At present, the above-mentioned reducing agents are logs, heavy oil, diesel, sawdust, ammonia, natural gas, etc. Among them, logs have better comprehensive performance, but they consume a lot and destroy forests, so they have been obviously eliminated; diesel and heavy oil reduction costs are high At the same time, it is 100% volatile, which is deoxidized by pyrolysis, carbonization and reduction. After contacting with copper water, it produces a lot of black smoke and serious pollution; sawdust is generally used as building materials at present, the cost is high, and the source cannot be guaranteed; ammonia, Natural gas is used as the reducing agent, which requires a large investment in equipment and is prone to safety problems