Study on process mineralogy and concentrating of a certain silver—manganese ore in Heibei

To identify the process mineralogical properties of silver-manganese from Heibei so as to provide a mineralogical basis for its chemical composition, mineral constituent,ores texture and structure and so on .The results show that the mineral constituent of the silver-manganese ore are simple and it has asymmetric distribution, and the grade of the crude ore is 210~220g/t. The contents of metallic minerals are only 1%~2%. The main minerals are manganese ore, silver, a few magnetite and hematite. The contents of nonmetallic minerals are only 98%~99%. The main minerals are quartz and carbonate. The contents of quartz are 60%~65%. The contents of carbonate are 30%~35%. The secondary minerals are a small quantity of hornblende and zoisite. A flowsheet of high intensity magnetic separation-flotation separation was introduced to concentrate silver-manganese ore in Hebei.Silver contents in the concentrates of high intensity magnetic separation and flotation,and in the manganese sludge are 595.7g/t,7328.0 g/t and 288.7g/t,severally,while the total silver grade and recovery can reach 586.8g/t and 81.44％,respectively.