Planetary Micro Milling - PBM
CE Certified Insmart Planatery Ball Mill (PBM) is ideal for analytically pure and contamination free batch grinding of test samples in dry as well as in suspension from as large as 10 mm particle size down to extreme end fineness. Most suitable for thorough mixing, homogenising, emulsifying and dispersing.
Principle of Operation
Grinding is carried out by high-energy frequent impact of balls. The energy level of balls are as high as 50 times (at 400 r.p.m.) the gravitational acceleration. Thus, Insmart Planetary System makes grinding extremely fast and efficient. Rotation of base plate provides the centrifugal force to the grinding balls and independent rotation of bowls (in opposite direction) makes the balls to hit the inner wall of the bowls several times more, because of the short returned path. Since the bowls are rotating in opposite direction a considerable part of grinding is done due to friction.OPTIONAL FEATURES:
SAFETY FEATURES:
| APPLICATION | For fine and ultra fine grinding of soft medium and hard materials. |
| FEED SIZE | Up to 10 mm |
| OUTPUT PARTICLE SIZE | 1 micron or smaller (depending on characteristics of material, number & size of balls, time and speed selection) |
| SPEED (setting and digital display) | Sun Disc speed for regular model 40 to 400rpm / for mini models 40 to 600 rpm |
| DIRECTION ROTATION | PROGRAMMABLE: Forward/Reverse/Alternate with LED indication |
| TIME (Setting & digital display) | RUN TIME (1-999Min/Sec) + OFF TIME (1-999Min/Sec) = 1 CYCLE, NO. OF CYCLES (1 TO 999) TOTAL TIME=(RUN TIME+OFF TIME)*NO. OF CYCLE |
| NUMBER OF BOWLS | 1 (single), 2 (twin), 2 to 4 large (250 ml useful capacity), 4 or 8 small (80 ml. useful capacity) |
| MATERIAL CONSTRUCTION | Hardened steel with tough core /AISI 304-SS/ Agate / Polyurethane / Ceramic / Lined Tungsten carbide / Zirconia / Toughened alumina / Corundum (natural and sintered) |
| POWER SUPPLY | SINGLE PHASE 230V A.C. 50/60 HZ, 10 Amp 2 Pole MCB with Proper earthing |
| MOTOR & DRIVE | 1.5Kw (2HP). Microprocessor based variable frequency drive. |
| WEIGHT & DIMENSIONS | Machine : 300kg 860x560x730mm Packed : 470kg 1066x787x1016 mm (wooden box) |
200 Grams of Sample having feed size -10 mm was ground in 500 ml Tungsten Carbide Lined Bowl with overall Ball Weight 600 Grams with ball to charge ratio of 1:3. Sample was grinded in two stages i.e. Primary Cycle (For reducing Particle Size from - 10 mm to 150 mesh (100 microns)) and Secondary Cycle (For reducing Particle Size from 150 Mesh to 400 Mesh (37 microns). After completion of Primary Cycle ball size/ diameter was reduced for grinding small particle size – 400 mesh (37 microns). The reduction ratio recorded after sieving the samples was 1:15. The sound level recorded of the equipment was -75 db with temperature raised during grinding material of Bowl was upto 60 OC and lid upto 40 OC. The following table mentions the results of grinding with reference to time of grinding & rpm of the Planetary Ball Mill (PBM-07):
Granite Samples (Hardness 5 – 6 mhos scale)
-
RPM
260
Grinding Time for primary cycle 20 mins Dia.20 mm (7 Nos),Dia. 16 mm(6 Nos) Grinding Time for Secondary cycle 45mins Dia.20 mm (8 Nos),Dia. 16 mm(43 Nos) Primary Cycle Secondary Cycle Screen Size (Mesh) Weight % Screen Size (Mesh) Weight % +150 0 +400 2.4 -150 100 -400 97.6 Total 100 Total 100 RPM
300
Grinding Time for primary cycle 20 mins Dia.20 mm (7 Nos),Dia. 16 mm(6 Nos) Grinding Time for Secondary cycle 45 mins Dia.20 mm (8 Nos),Dia. 16 mm(43 Nos) Primary Cycle Secondary Cycle Screen Size (Mesh) Weight % Screen Size (Mesh) Weight % +150 0 +400 1.3 -150 100 -400 98.7 Total 100 Total 100 RPM
350
Grinding Time for primary cycle 20 mins Dia.20 mm (7 Nos),Dia. 16 mm(6 Nos) Grinding Time for Secondary cycle 45mins Dia.20 mm (8 Nos),Dia. 16 mm(43 Nos) Primary Cycle Secondary Cycle Screen Size (Mesh) Weight % Screen Size (Mesh) Weight % +150 0 +400 0 -150 100 -400 100 Total 100 Total 100
Iron Ore Samples (Hardness 5 – 6 mhos scale)
-
RPM
240
Grinding Time for primary cycle 20 mins Dia.20 mm (7 Nos),Dia. 16 mm(6 Nos) Grinding Time for Secondary cycle 45mins Dia.20 mm (8 Nos),Dia. 16 mm(43 Nos) Primary Cycle Secondary Cycle Screen Size (Mesh) Weight % Screen Size (Mesh) Weight % +150 3.5 +400 3.2 -150 96.5 -400 96.8 Total 100 Total 100 RPM
300
Grinding Time for primary cycle 20 mins Dia.20 mm (7 Nos),Dia. 16 mm(6 Nos) Grinding Time for Secondary cycle 45 mins Dia.20 mm (8 Nos),Dia. 16 mm(43 Nos) Primary Cycle Secondary Cycle Screen Size (Mesh) Weight % Screen Size (Mesh) Weight % +150 3.8 +400 # 8.2 -150 96.2 -400 # 91.8 Total 100 Total 100
Planetary Micro Milling - PBM - Variants
Planetary Micro Milling - PBM - Range of Bowls & Balls
