The Production Process Of Electrolytic Manganese Carbonate Riched In Organics

Manganese is an important industrial raw material.Besides,it is also widely used in various fields of national economy.China has become the largest manganese resource utilization country in the world.And the industry of electrolytic manganese in China develops rapidly.However,after the development and utilization of manganese in the past decades,high-grade manganese resources are gradually depleted.At present,the manganese ore resources in China are complicated in mineral phases(the manganese ore grade is major in about 10%).There are many impurities and complex components in the normal manganese ore.In addition,the impurities are difficult to remove by a single process.This seriously restricts the sustainable development of China's metal manganese industry.Therefore,find a simple and effective way to remove the impurities in manganese carbonate is very necessary.Furthermore,reducing the energy consumption of electrolytic manganese is also of great significance to promote the development of related industries in China.The raw material used in this paper is a high grade manganese carbonate(red ore)in Guangxi,which has a high grade of Mn,up to 19.53%.However,there are numerous impurities in the red ore and the ore is rich in complex organic impurities.The existing methods for removing impurities is not effective.And the impurities could enrich in the electrolyte,resulting in higher energy consumption of electrolysis and the falling of manganese products,leading to short the service life of the anode plate.In this work,the novel production process is based on interfacial chemistry and physical chemistry.When the surfactant molecules in the solution to reach the critical micelle concentration,it will accumulate around the initiator molecules and form the properties of macromolecular micelles,so as to increase the volume of organic micelles effectively and improve the filtration effect of organics micelles.Finally,it can remove the organic impurities.In this paper,we test the effects of the different kinds of surfactants,the concentration of surfactants and the method of adding surfactants on the removing the organic impurities in the leaching solution.The efficiency of electrolysis was used as the evaluation index.As the results show,the electrolysis efficiency is increased by eight percentage points,compared with the blank test,with the OP-10 20 ppm added to the leaching process.Besides,the energy consumption of electrolysis is reduced and the frequency of the explosion plate is reduced.In addition,the oxidation-reduction potential and surface tension meter are used to monitor the solution redox potential and surface tension of the electrolytic manganese process.Exploring the influence of the solution redox potential and the surface tension for the efficiency of electrolytic manganese electrolysis.And find the internal relation between the electrolysis manganese consumption and the energy consumption of the electrolytic manganese.This technology can be a guide for the industrial manufacture.A pilot scale experiment was conducted in a factory to verify the effect of OP-10 on the removing the complex organic matter and to trace the surface tension and redox potential value of the solution.From the results,we can find that it has verified the effect of the OP-10 for electrolytic manganese.Moreover,after adding the OP-10,it can indeed reduce the energy consumption for electrolytic manganese.