Automated Ore Sorting See also: Sensor based sorting Modern, automated sorting applies optical sensors , that can be coupled with electrical conductivity and magnetic susceptibility sensors, to control the mechanical separation of ore into two or more categories on an individual rock by rock ...
Gold. In southern Africa, two x ray sorters are used to pre concentrate sulphide gold ore into two different grain size categories. While the input material has an average gold content of less than 0.8 g/t, the sorted product achieves a concentration of more than 4 g/t with an efficiency of approximately 90%.
Experience shows that gold ores are commonly amenable to some degree of particle sorting, generally using laser or XRT sensors, or a combination of these techniques. A dual phase sorting flow sheet comprising a laser rougher and an XRT scavenger has already demonstrated optimal recovery for a number of deposits.
The ore sorting effect. Some of the most impressive ore sorting case studies have come out of the diamond industry a sector where the ability to pick up a plus 100 ct rough before it enters the crushing stage can be the difference between profit and loss.
Sensor based ore sorting rejects waste rocks from run of mine ore. This enables mining with a lower cutoff grade, which means beneficiation of more diluted ore with lower ore loss in mining. 2) Decrease haulage costs Sensor based ore sorting reduces ore transportation costs per ton of produced metal when a sorting plant is installed at the mine.
2. Ore Dressing Technology and Equipment. The selection of sand and gold mine is mainly based on the physical properties of minerals, such as grain size, shape and specific gravity, so as to achieve the purpose of sorting in the moving medium flow. This is the oldest method of selection in Mineral Engineering Gravity concentration method.
Gold ores are typically amenable to sensor based ore sorting to some degree, and this is usually accomplished with XRT or laser sensors, or a combination of both. A two step sorting flow sheet consisting of an XRT rougher plus a laser scavenger has already proved an optimal recovery method for a number of deposits.