Nepheline, also called nephelite, is a feldspathoid. It is often found in mica schist and gneiss. The mineral is one especially liable to alteration, and in the laboratory various substitution products of nepheline have been prepared. In nature it is frequently altered to zeolites (especially natrolite), sodalite, kaolin, or compact muscovite. Gieseckite and liebenerite are pseudomorphs.
Overview of Nepheline vertical mill
Nepheline vertical mill finished product fineness: 325 mesh ~ 3000mesh.
There are five types of Shanghai CLIRIK HGM series Nepheline vertical mill they are HGM80 (HGM8021), HGM90 (HGM9024), HGM100 (HGM10027), HGM100A (HGM10036) and the new type HGM125.
Devices of Nepheline vertical mill
Argil mill grinder (industrial grinding machine) mainly consist of hammer crusher , micro powder main unit, Frequency conversion classifier, powder collector, pulse dust cleaner, high pressure positive blower, air compressor, muffler, electrical apparatus control system, sound-proof room, crusher, bucket elevator, storage hopper, and vibrating feeder.
Working principle of Nepheline vertical mill
The main bearing and each dial are driven by electromotor of main machine through reducer, and numbers of rollers, which are rolling in the ring, are driven by dial through plunger.
After crushed by hammer crusher, the big materials become small ones and are sent to storage hopper by elevator and further sent to the middle of first dial evenly by the electromagnetic vibrating feeder and feeding pipe. The materials will be driven to the edge of dial by centrifugal force and fall down into the ring, crushed and grinded by roller, and become powder after production of three rings.
 The high pressure centrifugal blower will inhale air from outside and blow the crushed materials to classifier. The rotating turbo in the powder concentrator will make the coarse material return to the mill and reground, while the fineness will mix with the air and go into the cyclone and be discharged in the discharge bin, which is at the bottom of it. The air, which mixed with very little fineness, will be purified by impulse duster and discharged by blower and muffler.
Features of Nepheline vertical mill
1.  High efficiency
Under the same finished final size and the same motor power, the capacity of Nepheline vertical mill is twice as much as jet mill, mixing grinder and ball mill.
2.  Long lifecycle of spare parts
The ring and roller are forged by special material with high utilization. Under the same grinding material and finish special size, the lifecycle of spare parts is about one year, which is 2-3times longer than impact mill or turbo mill. Furthermore, the lifetime can reach 2-5 years for grinding calcite carbonate.
3.  High safety and reliability
As no rolling bearings or screws in grinding cavity, there are no problems caused by bolts shedding or rapid wear of bearings and seal components.
4.  High fineness and flexible adjustment
The final fineness of the grinding materials can be adjusted between 325 meshes and 3000 meshes, and the product fineness can reach D97=<5um.
5.  Environment-friendly
The application of pulse deduster and muffler greatly alleviates dust pollution and noise.
Model and technical data of Nepheline vertical mill

Model	HGM80	HGM90	HGM100	HGM100A	HGM125
Ring Diameter(mm)	800	930	1035	1035	1300
Ring Number/pcs	3	3-4	3	4	4
Roller Number/pcs	21	24-32	27	34-36	40-44
Main Shaft Speed/r. p. min	230-240	200-220	180-200	180-200	135-155
Input Size/mm	≦20
Finished Size/um	5-47(325-2500)
Capacity t/h	0.5-4.5	0.6-6.5	0.7-7	1-8.5	1.5-12
Outlet Size L*W*H/m	13.9*4*6.2	14.7*4.8*7.2	18*4.6*8.6	18*4.6*8.6	14*9*10.25
Motor powder/KW	145-165	185-204	263	263-290	380-430

Note: This specification is just referencing, any changes are subject to the products.