raymond vertical grinding mill
1. high grinding efficiency,
2. big drying capacity
3. product fitness is easy to be adjusted

Raymond vertical grinding mill product profile

Grinding mill -- Model HRM grinding mill through grinding rollers to roll & press the materials (0-40mm) on the rotating grinding pan with pressure and grind them to be reached up to the relevant fitness.

It has good advantages of high grinding efficiency, big drying capacity, product fitness is easy to be adjusted, low noise, low power consumption, simple process flow, low abrasiveness, operating cost saving and etc.

Under the same process conditions and rotating speed, grinding pan diameter material level, grinding roller pressure are all the same, grinding efficiency of Model HRM roller mill can be raised more than 30%, average power consumption can be saved about 8.2%, and impact vibration of the overall unit could be obviously reduced.

With international advanced technology and national leading manufacturing quality

Principle of work

1 Grinding mill Structure and function

The grinding mill consists of separator/ grinding roller/ grinding table/ pressure device/ reducer/ motor/ shell.

The separator that decides the powder grinding fineness consists of adjustable transmission device/ rotor/ oriented fun/ shell/ crude powder hopper/ air outlet; the separator is a kind of high efficiency/ energy-saving/ convenient separator. The grinding roller is an important part of rolling and grinding. It being sited in the bent arm of the mill, under the external force, tightly on the material the grinding roller moves following with the millstone’s moving and then makes the material into powder. The grinding table is sited in output shaft of the reducer; there is the rack up on the grinding table and on the rack there is a ring groove. The material is made into the powder in this ring groove. The pressure device that consists of high pressure oil supplier/ hydraulic cylinder rod/ accumulator provides the pressure of roller; it can provide the enough pressure to make material into powder. The reducer is the part of passing power equipment.

2 Grinding mill working principle

The motor makes the grind table moving through the reducer and the same time the hot wind from the entrance gets into the vertical mill; the material fall from feed opening onto the central of grinding table; because of the centrifugal force the material move from the central to edge and when passing by the ring groove the material will be made into powder; the powder will go on moving to the edge of the grinding table till will be taken by the wind of the air ring; and the large particle will fall into the grinding table. The material of the wind the large particle will fall into the grinding table and the small particle will come out with the wind and gathered by the filter (which part will be the output of the vertical mill) when the material passes by the separator. The material will be stoving when meet with the wind in the body shell and reach the requirement humidity. According adjusts the oriented fun’s angle of separator and the speed of the separator rotor, the products’ requirement in the coarseness will be meeting.

Grinding mill Specifiations and parameters  are as follows:

HRM vertical grinding mill structure diagram

1,air outlet    2,feed inlet   3,air inlet   4,feed back pipe   5,grinding roller   6,millstone   7,pressure device
8,bleeding hole   9,separator   10,adjusting wind device   11,speed reduced device   12,motor 

Coal grinding capacity in pci system