Introduction of new type grinding roll assembly Clirik micro powder grinding mill is mainly used in grinding conventional materials ,like non-flammable materials with humidity less than 8%, Mohs hardness below 6, such as kaolin, limestone, calcite, talc, marble, barite, gypsum, iron oxide red, iron oxide green, aluminum hydroxide, pigment, bentonite, pottery clay, etc. The new type of grinding roll assembly changes the traditional structure, with various means of sealing, getting rid of three defects of old assembly, like oil leak, dust coming in, and disalignment. Several advantages of the new type assembly: 1. No oil leak: it is not necessary to add oil every shift but add a little lubricating oil every three days or a week. 2. High degree of sealing: the dust is not easy to enter into the assembly in the process of product, thus prolonging the service life of the bearings. 3. In the process of product, it is possible to adjust the bearing clearance according to the wearing degree of assembly bearing, ensuring the concentricity of the upper and lower bearings. The bearings can be used continuously for more than 10 months. 4. The new type of roll assembly extends the period of maintenance,and reduces the strength of repairment and productive costs, also improves productive efficiency, and brings considerable economic benefits to the users. The main features of the Clirik micro powder grinding mill: 1. Compared with other mills, the grinding pressure of grinding roll to the materials has increased 800-1200kg under the function of superfine spring. 2. Energy saving, in case of same output and fineness, its systematic energy consumption is only one-third of that in the jet mill. 3. Small investment, and high efficiency, in case of same output and fineness, the price is only one-fourth of that for the air-blast mill. 4. Compared with air-blast mill, Clirik micro powder grinding mill has fewer production process. The air-blast mill must make 20mm material into 100 mesh firstly, and then to be processed into micro powder, however, the micro powder mill can directly grind material with feeding size less than 20mm, and produce the micro powder with average particle size less than 6.5um at one time. 5. The grinding device adopts overlapping multi-stage sealing with good sealing performance. 6. The dust collecting effect of micro powder mill fully meets the national dust emission standards. Working principle: Clirik micro powder grinding mill mainly consists of main unit, classifier, powder collector, dust cleaner, blower, muffler, sound-proof room, crusher, bucket elevator, storage hopper, and vibrating feeder. After crushed by hammer crusher, the large materials become small ones and are sent to storage hopper by elevator, and then evenly sent to the upper distribution plate of the turn plate by vibrating feeder and sloping feeding pipe. When the grinding mill is at work, the main bearing and each dial are driven by electromotor of main equipment through reducer, and all the grinding rollers are rolling in the ring channels driving by dial through plunger. The materials are driven to the edge of the turn plate by the centrifugal force and fall down into the grinding chambers where the materials are repeatedly pressed, crushed and grinded by the rollers. Then the materials fall into multiple layers and to be crushed and ground continuously to micro powder. The high-pressure air blower constantly inhales air within the grinding mill and, in turn, the airflow with crushed materials are brought to the classifier whose high-speed impeller will screen the airflow: the unqualified particle size will fall and return to the mill for being reground while the qualified particle size mixed with air will go into the cyclone powder collector. Most of the qualified powders will fall and exit from the discharging valve at the bottom; a small proportion of the fine powders, with airflow, moves to the dust cleaner, and clings to the surface of the filter bags. At the same time, the fine powders clinging to the surface fall down by the sudden vibration of the filter bags, which is caused by the instantly ejected high-pressure gas controlled by the pulse valve. The materials from the above two lots are sent by the conveyor at the bottom to get finished powders packed. In addition, filtered clean air will be emitted from the air outlet of muffler in the end. Main Specification Model HGM80 HGM90 HGM100L HGM125 RingDiameter(mm) 800 900 1000 1300 Ring Number(layer) 3 3 4 4 Roller Number(piece) 21 27 36 44 Main Shaft Speed(r.p.m) 230-240 200-220 180-200 135-155 Input Size(mm) ≦20 ≦20 ≦25 ≦25 Finished Size(um/mesh) 5-47 (325-2500) 5-47 (325-2500) 5-47 (325-2500) 5-47 (325-2500) Capacity(t/h) 0.5-4.5 0.6-6.5 1-8.5 1.5-12 Overall Dimension(L*W*H,m) 13.9*4*6.2 14.7*4.8*7.2 18*4.6*8.6 14*9*10.25 Motor Powder (Kw) 123-143 168.35 243.95 344.4 Power parameter Power Parameter Unit: KW HGM80 HGM90 HGM100L HGM125 Main Unit 75 2*45 132 185 Classifier 18.5 18.5 30 37 Blower 45 55 75 2*55 Crusher 11 18.5 18.5 45 Bucket Elevator 3 3 4 4 Spiral Conveyor 3 3 3 2*4 Discharging Valve 2*0.75 1*0.75 1*1.1 2*1.1 1*0.75 4*1.1 Air compressor 11 15 22 2*15 Remark:For the data with prefix such as "2*xx",it means there are two motors 2*0.75,configured for one item Forexample,discharging valve,HGM80 with configuration it means there are 2 pieces of 0.75KW motors installed with discharging valve.