Feasibility Study On Thirty Thousand Tons/Year Electrolytic Zinc Production Expansion Project Of Jinshi Metallurgy And Chemistry Plant At Fankou Mine

Jinshi Metallurgy and Chemistry Plant has developed into a famous smelter in China with an annual electrolytic zinc production of 20 kilotons and sulphur acid production of 25 kilotons by technology innovation, taping potential and increasing production. In order to improve the situation of backward in technique and insufficient production of China's zinc industry and increase economic effectiveness of the enterprise, Jinshi Metallurgy and Chemistry Plant began the production expansion of 30 kilotons/a electrolytic zinc, taking aim at increasing its annual electrolytic zinc production from 20 kilotons to 30 kilotons, comprehensively recovering the rare dispersed metals Ga and Ge, and making the technique and equipment reach advanced level in the world.Based on metallurgical technology and principles, feasibility study on thirty thousand tons/year electrolytic zinc production expansion project of Jinshi metallurgy and chemistry plant at Fankou mine was done, which included choice and demonstration of technology, metallurgical calculation, calculation and choice of main equipments, workshop collocation, valuable metal recovery and environmental protection, etc.. The project will be finished in 1.5 years. The main products are 30000t/a zinc ingots with 99.995% purity, higher than 85% first-degree products and 20% super products, 54000t/a sulphur acid with a concentration of 98%, 1050 t/a scum containing 85% Zn. The byproducts are 520 t/a Ge slags containing 0.9~ 1.1% Ge, 2670 t/a Pb-Ag slag containing 35~40% Pb and 0.1% Ag and 1051.550 t/a Cu-Cd- Co slags containing 44% Zn and 4 % Cd. The environment is benign and few pollutants are exhausted. Annual sale income can reach 297191.85 thousand yuan, taxes 20078.54 thousand yuan, total cost 248155.43 thousand yuan, profit 28957.88 thousand yuan, total profits 28457.88 thousand yuan. Investment profit rate of project can reach 14.23 %, and income tax rate 24.27%. The costs will be taken back in 7.74 years if excluding the income of Ga products, or it will be reduced to 5.21 years.The feasibility study shows that this project can fully tap the present potential and has such advantages as high technology and advanced equipments, low cost and high output. So it can be expected that the economic benefits of enterprise will improve rapidly, which will lay a stable basis for next development.