Lithium is becoming a strategic metal due to its important applications in secondary battery electrodes used in electronic appliances and also in electric traction vehicles. Lithium primary resources are brines and rock minerals, the former being nowadays almost exclusively used in the production of lithium commodities. With the expected increase in lithium demand, the development of competitiv...

The technical practicability of high temperature leaching process using willemite concentrate as the materials was developed in study for extracting base metals. factors affecting rates zinc, iron, and silica from were investigated, optimized maximum zinc extraction minimum iron dissolution to meet needs solution purification. Under studied conditions (413 K, 0.81 mol/L sulfuric acid, duration ...

For securing noble metal resources, recovery of metals from urban mines is a key technology. Recently, ammonium thiosulfate solution has attracted attention as safe and low-cost for gold leaching. We previously reported process using electroless displacement deposition onto silicon powder. In this study, we tried to use powder recover an leaching solution. experimentation, added simulated conta...

This paper describes a leaching-purifying-precipitation process to recover magnesium from serpentine acid-leaching solution and synthesize high purity Mg(OH)2 4MgCO3·Mg(OH)2·4H2O. Fe, Al, Cr in the leaching were removed using oxidation precipitation method with active MgO as precipitant H2O2 an oxidant. Ni, Co Mn by Na2S obtain pure MgSO4 solution. Mg2+ ions first precipitated NH3·H2O Mg(OH)2, ...

Because tires contain approximately 1-2% zinc by weight, zinc leaching is an environmental concern associated with civil engineering applications of tire crumb rubber. An assessment of zinc leaching data from 14 studies in the published literature indicates that increasing zinc leaching is associated with lower pH and longer leaching times, but the data display a wide range of zinc concentratio...