Conventional Beneficiation Process was Upgraded
The vertical auger mixing mill consists of simplified, spiral mixers, gear and rack, the cylinder body is full of given grinding media (steel balls, ceramic balls and gravel). The spiral agitator rotates slowly after passing the reducer drive, grinding media and material in the cylinder body do the multi-dimensional circular motion and rotation movement as a whole.
(1)
grinding stripping. grinding stripping is the main part of grinding, a small
amount of shock and shearing influences exists . This can keep the original
lattice shape of the material , and make full use of energy efficient grinding
materials. For fine grinding and ultrafine grinding, friction and abrasive
grinding is the most effective way of grinding.
(2) layered ground. In the
grinding zone, the medium surface pressure is composed of medium gravity and
centrifugal movement of the extrusion pressure, because of the low speed, medium
surface pressure can be approximated as a medium gravity. Medium surface
pressure gradually increased to the next from the mill Simplified, grinding
effects at the bottom of the medium filling the role is the most intense. due
to the coarse particles subside in the lower part of the mill shell, they can be
grinded effectively.
(3) internal classification. When we conduct the wet
grinding, the top of the material is the medium filling mixing staging area, and
the material subside by natural and centrifugal sedimentation grading to reduce
over-grinding.
(4)the unique media motion law. the media's Balanced
movement , multi-dimensional movement and rotation movement disperse
transmits the energy of agitator to grinding materials.
The process is
divided into the following stages: (1) open process: ① at the top to the mine,
the bottom row of ore; ② at the bottom to the mine, the top row of ore; ③ at the
top to the mine, the top row of ore. (2) closed-loop process: d) wet cone
hydraulic classifier, vibrating screen or
hydrocyclone classification; ② the classification of dry-type centrifugal air
classifier.
the application of the iron concentrate regrinding .as the
refractory iron ore belonging to poor fine miscellaneous ores, its composition
is very complex, using the traditional dressing recovery and improve the quality
is difficulty, the grinding fineness is a key factor. such as the Qidong iron
ore grinding fineness degrees -38 um≥ 95% to 98% of . The Shanxi of TISCO
Yuanjiazao village of iron ore -38 um ≥ 95%, and persimmon bamboo solid
non-ferrous metal ore, the Ruyang molybdenum mine tailings recovery of iron ore
requires the grinding fineness - 38um ≥ 95%.the grade iron ore can achieve
65.00%.Therefore, grinding or fine grinding equipment's choice is essential .
Many of our mining industry iron ore production using ordinary horizontal ball mill grinding,
while the ordinary horizontal ball mill's grinding efficiency is low, especially
the product particle size can not meet the requirements and the monomer
dissociation. Vertical spiral mixing meal of mining machinery, iron ore and then
grinding or fine grinding is the fine grinding equipment which is most
promising, high energy utilization, fine granularity . In addition, as the
device structure is simple , operation and maintenance is convenient , they are
widely used in industrial production of gold ore, nonferrous metal ore, metal
ore and magnetic materials.