The Recovery and Separation of Mineral Values from Geothermal Brines.

摘要

The laboratory study on recovery and separation of minerals from Sinclair No. 4geothermal brines developed methods for recovering iron and manganese hydrated oxide compounds as separate components essentially quantitatively. In addition,lead and zinc values were also removed,essentially quantitatively,as co-precipitated compounds together with the hydrated manganese oxides. Processes were developed for the recovery of iron,manganese,zinc,lead,barium,lithium,and ammonia values from the brine. Greater than 99percent of the total heavy metal values were separated at pH = 8.7under nonoxidizing conditions using lime as a precipitant. The remaining heavy metals were subsequently brought down with lime under oxidizing alkaline conditions.