As a leading system solution provider of material grinding and separation technology in the field of mineral processing, our company provides comprehensive solutions and supplies key equipment for the material grinding and separation system, including HPGR – the critical core equipment of the grinding system, Ultra-Fine Dry Classifying Screen, Dry Magnetic Separator and New-type Separator for mines.
We provide system solutions for different ores such as iron ore, non-ferrous metals, pellet feed grinding, pebbles, gold ore, etc. These system solutions have stood the test of time in the toughest operating conditions. At the same time, we continue to invest in research and development of new technologies to make proven solutions even better and adapt to changing demands.
There are three processes below available for the HPGR:
- One pass open circuit
- Side material circulation
- Closed circuit screening
"Closed circuit screening + pre-magnetic-separation" is the mainstream process of iron ore at present. The followings are available depending on different scenarios of customers (such as different material moisture):
- Dry screening + dry magnetic separation
- Dry screening + wet magnetic separation
- Wet screening + wet magnetic separation
The HPGR replaces the traditional ball mill and it is used for the wet grinding of iron concentrate in the pelletizing plant before pelletizing, effectively increasing the specific surface area of iron concentrate, improving the surface activity, greatly reducing the consumption of bentonite, and improving the pelletizing strength and pelletizing ratio. It has been the standard configuration of the pelletizing plant.
There are two processes below available:- One pass open circuit
- Side material circulation
It is well known that a large number of pebbles which are hard and difficult to treat are produced by the SAG/AG grinding processes, which has always been the bottleneck restricting the capacity of the SAG/AG grinding processes.
The HPGR is very good at processing these hard ores. Replacing the original crusher with the HPGR can effectively grind the pebbles, largely increasing the original capacity of the SAG/AG grinding system.
By adopting the new "ball mill-free and fully dry" grinding process system, it has minimized the consumption of power, steel and water, particularly suitable for the areas that are lack of water.
The ultra-fine screen and the new-type separator for mining are perfectly matched with the efficient HPGR, which is the ball mill-free and water-free, and applicable to both iron ore and nonferrous metal industries.
The HPGR replaces the traditional tertiary crusher and the primary ball mill. Combining with the ultra-fine screen and the dedicated dry magnetic separator, it is able to reduce the material size to 0.5mm before ball mill, improving the ore grade before ball mill, discarding a large number of qualified tailings in advance, and perfectly realized the comminution concept of "more crushing and less grinding, and discarding as early as possible". This creates the possibility of the economical development of low-grade iron ore.
The HPGR replaces the traditional tertiary crusher and ball mill. The 0-0.5mm materials after dry screening will directly enter the subsequent flotation procedure after pulping (conveyed by the ultra-long pipeline). This can be used for various hard rock ores, such as lithium ore, copper ore, gold ore, molybdenum ore and lead zinc ore etc. In case of high moisture of the raw ore, wet screening is allowed. The oversize products will return to the HPGR after dehydration, and the undersize products will directly enter the floatation procedure.
Due to the fine particle size distribution of HPGR and a large number of microcracks generated in the minerals, the recovery rates of target metals can be increased in the subsequent flotation procedure.
The HPGR replaces the traditional ball mill with high energy consumption, which will greatly save energy and reduce consumption for new concentration plants or upgrading projects.