Gold ore type and ore dressing method
The type of gold ore is different in its method of division. According to the degree of ore oxidation, it can be divided into primary (sulfide ore) ore, partial oxidation (mixed) ore and oxidized ore. Characteristics of oxide ores, the ore containing iron oxide and other metal-containing oxide minerals and shale (clay) component. According to the actual situation in China, combined with the requirements of mineral processing technology, it can be divided into:
A depleted sulfide gold ore. Most of the ore is quartz vein type, and there are complex quartz vein type and fine vein impregnation type. The sulfide content is small, mostly pyrite, and in some cases, copper , lead , zinc , tungsten, molybdenum, etc. mineral. The natural gold in this type of ore is relatively large in size. Gold is the only object of recovery. Other elements or minerals have no industrial value or can only be recovered as by-products. Higher sorting metrics can be achieved with simple processes such as single flotation or full mud cyanidation.
B polysulfide gold ore. The ore is rich in pyrite or arsenopyrite, and they are also recycled as gold. The grade of gold is low, the change is not big, the natural gold particles are relatively small, and are mostly wrapped in pyrite. It is generally easier to select gold and sulfide by flotation; however, the separation of gold from sulfide requires a complex process of combining metallurgy, otherwise the gold recovery index will not be too high.
C contains gold polymetallic ore. Such other than gold ore, several metals and some minerals containing copper, lead copper, lead and zinc silver, tungsten and antimony, which are separate mined value. Its characteristics are: containing a considerable amount of sulfides (10-20%); natural gold is closely related to pyrite, and most of them are closely symbiotic with copper, lead and other minerals; natural gold is unevenly embedded in thickness, and the interval of particle size changes is long. ; a wide variety of comprehensive utilization. The above characteristics determine that such ores generally require a more complex beneficiation process for sorting.
D gold ore containing gold telluride. Gold is still in the natural gold state, but a considerable part of the gold is in the gold telluride. Such ores are mostly low-temperature hydrothermal deposits, and the gangues are quartz, chalcedony quartz and carbonate minerals.
E contains gold copper ore. The difference between this type of ore and the third type of ore is that gold has a low grade but can be used as one of the main elements of comprehensive utilization. The natural gold particle size in the ore is medium, and the symbiotic relationship between gold and other minerals is complex. Most of the ore dressing concentrates gold in copper concentrates and recovers gold during copper smelting.
The type of gold ore is different in its method of division. According to the degree of ore oxidation, it can be divided into primary (sulfide ore) ore, partial oxidation (mixed) ore and oxidized ore. The oxidized ore is characterized by the presence of iron oxide and other metal oxidizing minerals and the inclusion of shale (clay) components. According to the actual situation in China, combined with the requirements of mineral processing technology, it can be divided into:
A depleted sulfide gold ore. Most of the ore is quartz vein type, and there are complex quartz vein type and fine vein impregnation type. The sulfide content is small, mostly pyrite, and in some cases, copper, lead, zinc, tungsten, molybdenum, etc. mineral. The natural gold in this type of ore is relatively large in size. Gold is the only object of recovery. Other elements or minerals have no industrial value or can only be recovered as by-products. Higher sorting metrics can be achieved with simple processes such as single flotation or full mud cyanidation.
B polysulfide gold ore. The ore is rich in pyrite or arsenopyrite, and they are also recycled as gold. The grade of gold is low, the change is not big, the natural gold particles are relatively small, and are mostly wrapped in pyrite. It is generally easier to select gold and sulfide by flotation; however, the separation of gold from sulfide requires a complex process of combining metallurgy, otherwise the gold recovery index will not be too high.
C contains gold polymetallic ore. In addition to gold, some of these ores contain copper, copper, lead, lead, zinc, silver, tungsten and other metal minerals, which have the value of separate mining. Its characteristics are: containing a considerable amount of sulfides (10-20%); natural gold is closely related to pyrite, and most of them are closely symbiotic with copper, lead and other minerals; natural gold is unevenly embedded in thickness, and the interval of particle size changes is long. ; a wide variety of comprehensive utilization. The above characteristics determine that such ores generally require a more complex beneficiation process for sorting.
D contains gold and gold ore. Gold is still in the natural gold state, but a considerable part of the gold is in the gold telluride. Such ores are mostly low-temperature hydrothermal deposits, and the gangues are quartz, chalcedony quartz and carbonate minerals.
E contains gold copper ore. The difference between this type of ore and the third type of ore is that gold has a low grade but can be used as one of the main elements of comprehensive utilization. The natural gold particle size in the ore is medium, and the symbiotic relationship between gold and other minerals is complex. Most of the ore dressing concentrates gold in copper concentrates and recovers gold during copper smelting.
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