retSCH Planetary Ball Mills are used for the pulverization of soft, fibrous, hard and brittle ma- terials. They achieve a very high final fineness down to
12 pages

275 KB – 12 Pages

PAGE – 2 ============
Planetary Ball Mills RETSCH™s innovative Planetary Ball Mills meet and exceed all requirements for fast and reproducible grinding down to the nano range. They are used for the most demanding tasks, from routine sample processing to colloidal grinding and advanced materials development. 2PLANETARY BALL MILL S

PAGE – 3 ============
CONTENTPlanetary Ball Mills Œ Applications 4Œ Benchtop models Œ Planetary Ball Mill PM 100 5 Œ Planetary Ball Mill PM 100 CM 5 Œ Planetary Ball Mill PM 200 5Œ Floor models Œ Planetary Ball Mill PM 400 5 Œ Planetary Ball Mill PM 400 MA 5Œ Selection guide / technical data 9Œ Grinding jars 10Œ Pressure and Temperature Measurement System PM GrindControl 11Œ Order data 12Preliminary size reductionMixer MillsAssistingRETSCH Planetary Ball Mills are used for the pulverization of soft, fibrous, hard and brittle ma-terials. They achieve a very high final fineness down to the submicron range. The feed size depends on the mill and can be as large as 10 mm. If the sample feed size is larger than this then the sample must first undergo preliminary size reduction. For the coarse and prelimi- nary size reduction of hard, brittle or even tough materials, RETSCH Jaw Crushers are the instruments of choice. In con- trast, bulky, soft, fibrous or elastic materials are best pre- pared in RETSCH Cutting Mills. Fine size reduction with impact and friction can also be carried out with RETSCH Mixer Mills. They are used for small sam-ple volumes and cryogenic grinding. For the subsequent pulveriza- tion a representative part-sample must first be obtained, e.g. with RETSCH™s Sample Divider PT 100. For preparing solid samples for XRF analyses RETSCH offers two models of hydraulic Pellet Presses.Milling Œ Jaw Crushers Œ Rotor Mills Œ Cutting Mills Œ Knife Mills and Blenders Œ Mortar Grinders Œ Disc Mills Œ Mixer Mills Œ Planetary Ball Mills SievingAssistingProduct videos at 3

PAGE – 4 ============
PLANETARY BALL MILL S4ApplicationsRETSCH Planetary Ball Mills pulverize and mix soft, medium-hard to ex-tremely hard, brittle and fibrous materials. They are suitable for both dry and wet grinding. These versatile mills are used successfully in virtually all industry and research sectors, where the quality control process places the highest demands on purity, speed, fineness and reproducibility. The main areas of application for Planetary Ball Mills are: Agricultureplant materials, seeds, soil, tobacco, wood fibres Biologybones, hair, tissue Ceramics and glassceramic oxides, clay minerals, glass, hydroxyapatite, kaolin, quartz sandChemicals and plasticscarbon fibres, catalysts, cellulose, paints and lacquers, pigments, plastics, polymers Construction materialsbentonite, cement clinker, concrete, gypsum, sand, stonesEnvironmental researchcompost, electronic scrap, sewage sludge, waste Mineralogy and metallurgyalloys, coal, coke, iron ore, metal oxides, quartz, semi-precious stones, slagand many more Planetary Ball MillsGeneral remarksGrinding jar Grinding ballsFeed sizeSample amount Grinding timeRevolution speed*Final fineness Catalysts250 ml ZrO215 x 20 mm ZrO21 – 20 mm130 ml2 min450 rpm63 µm Cement clinker 5 – 10 drops of methanol 125 ml ZrO26 x 20 mm ZrO22 – 5 mm50 g 5 min450 rpm100 µm Coal500 ml ZrO225 x 20 mm ZrO210 mm 150 g4 min400 rpm200 µm Glasspre-grinding with 15 x 20 mm balls 250 ml ZrO260 x 10 mm ZrO25 – 10 mm120 g90 min420 rpm20 µm Metal oxides wet grinding 250 ml ZrO2500 g x 3 mm ZrO2< 300 µm 100 g + 50 ml IPA 1 - 2 h450 rpm< 1 µm Sand500 ml ZrO225 x 20 mm ZrO21 - 3 mm200 g6 min500 rpm 63 µm Sewage sludge pre-grinding with 7 x 20 mm balls 125 ml ZrO250 x 10 mm ZrO210 - 20 mm20 g30 min400 rpm63 µm Soil250 ml Stainless steel 15 x 20 mm Stainless steel 10 mm (agglomerates) 120 g10 min400 rpm100 µm Straw125 ml ZrO28 x 20 mm ZrO20 - 2 mm10 g30 min400 rpm160 µm This chart serves only for orientation puposes. *In a Planetary Ball Mill PM 100 ZrO 2: Zirconium oxide The RETSCH application database contains more than 1,000 application reports. Please visit Application examples Free test grinding Part of the RETSCH professional customer service is about offering our customers the individual advice they need to find the best possible solution for their sample prepara- tion task. To achieve this our application laboratories process and measure samples free-of-charge and provide a recommenda- tion for the most suitable method and in- strument. For more information please visit our web- site PAGE - 5 ============ The grinding jars are arranged ec- centrically on the sun wheel of the Planetary Ball Mill. The direction of movement of the sun wheel is op- posite to that of the grinding jars in the ratio 1:-2 (or 1:-2.5 or 1:-3). The grinding balls in the grinding jars are subjected to superimposed rotational movements, which cause the so-called Coriolis forces. The difference in speeds between the balls and grinding jars produces an interaction between frictional and impact forces, which releases high dynamic energies. The interplay be- Planetary Ball Mill technology tween these forces produces the high and very effective degree of size reduction of the Planetary Ball Mill.The PM 100 CM operates with a speed ratio of 1:-1 (centrifugal mode). The centrifugal forces pro- duced by the rotation movement the sample and the grinding balls against the inner wall of the grinding jar, where size reduction takes place primarily by pressure and friction. PLANETARY BALL MILL S5Planetary Ball Mills PM 100, PM 200 and PM 400 RETSCH Planetary Ball Mills are used wherever the highest degree of fine- ness is required. Apart from the clas- sical mixing and size reduction pro- cesses, the mills also meet all the technical requirements for colloidal grinding and have the energy input necessary for mechanical alloying processes. The extremely high cen- trifugal forces of the Planetary Ball Mills result in very high pulverization energy and therefore short grinding times. The Planetary Ball Mills are available in versions with 1, 2 and 4 grinding stations. The freely selectable ma- chine settings, comprehensive range of grinding jars made from top-quality materials as well as the numerous possible ball charge combinations (number and ball size) allow individ- ual adaptation of the grinding pa- rameters to the particular size re- duction task.Together with the ficomfortfl grinding jars these Planetary Ball Mills offer the highest possible degree of performance, safety and reliability. Powerful and fast grinding down to the nano rangeBenefits at a glance ˜ Efficient grinding process for excellent results down to the submicron range ˜ Choice of speed ratios (PM 400)˜ Grinding jar volumes from 12 ml to 500 ml, in 6 different materials˜ Suitable for long-term trials and continuous use˜ Automatic direction reversal helps to avoid agglomerations ˜ FFCS technology compensates vibrations and ensures perfect stability on the bench (PM 100) ˜ Reproducible results due to en- ergy and speed control˜ Programmable starting time˜ Memory for 10 parameter com- binations˜ Graphics display and ergonomic 1-button operation ˜ Automatic grinding chamber ventilation ˜ 2-year warranty, CE-conforming Efficient Œ Versatile Œ Safe PAGE - 6 ============ PLANETARY BALL MILL S6Benchtop models PM 100, PM 100 CM and PM 200 Type PM 100 The convenient benchtop model with 1 grinding station for grinding jars with a nominal volume of 12 to 500 ml. Both PM 100 models feature Free- Force-Compensation-Sockets (FFCS) which ensure a safe low-vibration run and minimal oscillation transfers to the laboratory bench. Type PM 100 CM The PM 100 CM operates in centrifugal mode, i.e. the speed ratio of sun wheel to grinding jar is 1:-1 (PM 100: 1:-2). This results in a different ball movement which leads to a more gentle size reduction process with less abrasion. Type PM 200 The benchtop model PM 200 with 2 grinding stations for grinding jars with a nominal volume of 12 to 125 ml. The larger sun wheel diameter results in a higher energy input when com- pared to the PM 100. RETSCH Planetary Ball Mills are available in different versions. Please refer to page 9 for a complete overview of the different performance features. PM 100 PM 100 CM PM 200 The Planetary Ball Mills feature a very convenient operator guidance. All the relevant data can be entered or called up via a graphics display with 1-button operation: ˜ speed˜ grinding time˜ energy input˜ grinding direction reversal with selection of running and pause times˜ starting time˜ remaining running timeMaximum operating comfort ˜ display of drive load factor ˜ operating hours ˜ clear text error messages˜ service intervals10 combinations of speed, grind- ing time and interval settings can be stored for repetitive grinding tasks. With multi-language graphical menu guidance. PAGE - 8 ============ A well thought-out operating concept and, above all, the opti- mized safety aspects set new standards in this product segment and offer the user the possibility of carrying out size reduction tasks op- timally and safely. The powerful and maintenance-free mill drive guaran- tees a constant controlled speed even for continuous use in long-term trials and under maximum load.The Planetary Ball Mills offer a high degree of operating convenience, safety and versatility. Thanks to the programmable starting time grinding jobs can be started at night. If a power cut should occur during operation, the mills save all parame- ters including the remaining grinding time at that point of time. When the power supply is restored the grinding process can be resumed.A built-in fan with standstill mon- itoring cools the grinding jars during operation. The extraction volume per hour is greater than the 20-fold grinding chamber volume. Operation of the Planetary Ball Mills is particularly safe. They feature a Safety Slider which ensures that the mill can only be started after all grinding jars have been securely fixed with a clamping device. The self-acting lock ensures that the grinding jars are seated correctly and securely. Thanks to the automatic cover clo- sure, the machine only starts when the cover is properly closed. After the grinding process is finished, the cover unlocks automatically. It can only be opened when the mill is at a complete standstill.The patented quick-action clamping device is used in all RETSCH Planetary Ball Mills. It allows the grinding jars to be inserted in the mills safely, yet conveniently. PLANETARY BALL MILL S8Innovative technology for increased safety Particulary safe For optimal balancing the counterweight of the PM 100 can slide up an inclined guide rail Planetary mills with a single grind- ing station require a counterweight for balancing purposes. In the Ball Mill PM 100 this counterweight can be adjusted on an inclined guide rail. In this way the different heights of the centers of gravity of differ- ently-sized grinding jars can be compensated in order to avoid dis- turbing oscillations of the machine. Any remaining vibrations are com- pensated by feet with some free movement (Free-Force Compensation Sockets). This innovative FFCS technology is based on the Controlled forces in single-station Planetary Ball Mills d™Alembert principle and allows very small circular movements of the machine housing that result in an automatic mass compensation. The laboratory bench is only sub- jected to minimal frictional forces generated in the feet. In this way the PM 100 en- sures a quiet and safe opera- tion with maximum compensa- tion of vibrations even with the largest pulverization forc- es inside the grinding jars and therefore can be left on the bench unsupervised. PAGE - 9 ============ The working principle of the Planetary Ball Mills is based on the relative rotational movement be- tween the grinding jar and the sun wheel. In addition to the sun wheel diameter and speed of rotation this speed ratio is decisive for the ener- gy input and therefore for the re- sults of the size reduction process. The higher the speed ratio, the more energy is generated. There are Planetary Ball Mills with different speed ratio settings. For example, a ratio of 1:-1 means that Speed ratios each time that the sun wheel ro- tates the grinding jar also rotates exactly once in the opposite direc- tion (indicated by the minus sign). With a speed ratio of 1:-2 the grinding jar rotates twice for each sun wheel rotation. In order to follow the rotational movement of the grinding jar you have to imag- ine that you are standing at the center of the sun wheel. During the sun wheel rotation you will see the red reference point exact- ly twice, i.e. the grinding jar has rotated twice (see illustration). PLANETARY BALL MILL S9Diagram: speed ratio 1:-2Sun wheelGrinding jar Performance data PM 100 / PM 100 CM PM 200 PM 400 / PM 400 M A Field of application pulverizing, mixing, homogenizing, colloidal milling, mechanical alloying Feed material soft, hard, brittle, fibrous Œ dry or wet Feed size* <10 mm <4 mm <10 mmFinal fineness* <1 µm <1 µm <1 µm For colloidal grinding <0.1 µm <0.1 µm <0.1 µm Batch/Sample volume max. 1 x 220 ml max. 2 x 50 ml max. 4 x 220 ml with stacked grinding jars max. 2 x 20 ml Œ max. 8 x 20 ml No. of grinding stations 1 2 4 or 2 Suitable grinding jars —comfortfl 12 ml / 25 ml / 50 ml / 80 ml 1 or 2 2 2, 4 or 8 125 ml 1 2 2 or 4 250 ml / 500 ml 1 Œ 2 or 4 Speed ratio 1 : -2 / 1 : -1 1 : -2 1 : -2 / 1 : -2.5 or 1 : -3 Sun wheel speed 100 - 650 min -1 100 - 650 min -1 30 - 400 min -1Max. speed of the jars 1300 min-1 / 650 min -1 1300 min-1 800 min-1 / 1000 min -1 or 1200 min -1Effective sun wheel diameter 141 mm 157 mm 300 mmDigital grinding time setting (hours:minutes:seconds) 00:00:01 to 99:59:59 00:00:01 to 99:59:59 00:00:01 to 99:59:59 Direction reversal yes yes yes Interval time 00:00:01 to 99:59:59 00:00:01 to 99:59:59 00:00:01 to 99:59:59 Pause time 00:00:01 to 99:59:59 00:00:01 to 99:59:59 00:00:01 to 99:59:59 Measurement of input energy possible yes yes yesSerial interface yes yes yesTechnical data Power consumption approx. 1250 W (VA) approx. 1250 W (VA) approx. 2200 W (VA) W x H x D 630 x 468 x 415 mm 630 x 468 x 415 mm 836 x 1220 x 780 mm Net weight approx. 80 kg / approx. 86 kg approx. 72 kg approx. 290 kg Noise values (Noise measurement according to D IN 45635-31-01-K L3)Emission value with regard to workplace LpAeq up to 85 dB(A) LpAeq up to 80 dB(A) LpAeq up to 85 dB(A) *depending on feed material and instrument configuration/settings Selection guide for Planetary Ball Mills PAGE - 10 ============ In addition to the instrument settings, the filling level of the jar is also of crucial importance for a successful grinding process in Planetary Ball Mills. For grinding bulk materials a jar filling should consist of about 1/3 sample and 1/3 ball charge. The remaining third is the free jar volume that is necessary for the free movement of the balls. The table provides guidelines. PLANETARY BALL MILL S10 ficomfortfl grinding jars for PM 100, PM 200 and PM 400 Material composition guidelines approx. Material analysis Grinding jar Material no. hardness (in %)Hardened steel 1.2080 62-63 HRC Fe (84.89), Cr (12), C (2.2), Mn (0.45), Si (0.4), P (0.03), S (0.03) Stainless steel 1.4034 48-52 HRC Fe (82.925), Cr (14.5), Mn (1), Si (1), C (0.5), P (0.045), S (0.03) Tungsten carbide 1180-1280 HV 30 WC (94), Co (6) Agate 6.5-7 Mohs SiO2 (99.91), Al 2O3 (0.02), Na 2O (0.02), Fe 2O3 (0.01), K 2O (0.01), MnO (0.01), MgO (0.01), CaO (0.01) Sintered aluminum oxide 1750 HV Al2O3 (99.7), MgO (0.075), SiO 2 (0.075), CaO (0.07), Fe 2O3 (0.01), Na 2O (0.01) Zirconium oxide* 1200 HV Zr02 (94.5), Y 2O3 (5.2), SiO 2/ MgO/ CaO/ Fe 2O3/ Na 2O/ K 2O (< 0.3) The above percentages are mean values. We reserve the right to make alterations. *Yttrium-part-stabilized Grinding jar filling levels Œ guidelines for sample volume and ball charge ficomfortfl grinding jar Sample Max. Recommended ball charge nominal volume amount feed size Ø 5 mm Ø 10 mm Ø 15 mm Ø 20 mm Ø 30 mm Ø 40 mm 12 ml up to 5 ml <1 mm ˜ ˜ ˜ 50 pcs. 5 pcs. Œ Œ Œ Œ 25 ml up to 10 ml <1 mm ˜ ˜ ˜ 100 pcs. 8 pcs. Œ Œ Œ Œ 50 ml 5 - 20 ml <3 mm ˜ ˜ ˜ 200 pcs. 10 pcs. 7 pcs. 3 pcs. Œ Œ 80 ml 10 - 35 ml <4 mm ˜ ˜ ˜ 250 pcs. 25 pcs. 10 pcs. 5 pcs. Œ Œ125 ml 15 - 50 ml <4 mm ˜ ˜ ˜ 500 pcs. 30 pcs. 18 pcs. 7 pcs. Œ Œ250 ml 25 - 120 ml <6 mm ˜ Œ ˜ 1200 pcs. 50 pcs. 45 pcs. 15 pcs. 6 pcs. Œ500 ml 75 - 220 ml <10 mm ˜ Œ ˜ 2000 pcs. 100 pcs. 70 pcs. 25 pcs. 8 pcs. 4 pcs. PM 100 PM 200 PM 400 Grinding jars for excellent grinding resultsThe performance and the result of sample preparation are also deter -mined by the choice of the grinding jar and its ball charge. The choice de -pends on the amount of sample and the final fineness and purity of the ground sample that are necessary for the subsequent analysis.The ficomfortfl range of grinding jars has been specially designed for ex- treme working conditions such as long-term trials, wet grinding, high mechanical loads and maximum speeds as well as for mechanical al- loying. In the PM 100 and PM 400 each grind ing station can accommodate 2 stacked 12 - 50 ml ficomfortfl grind -ing jars. The 50 ml grinding jars re-quire an additional adapter, the smaller grinding jars can be stacked directly. ˜ Unusually simple and safe handling ˜ Safe, non-slip seating with built-in anti-rotation device and conical base centering˜ O-ring for gas-tight and dust-proof seal˜ User-friendly gripping flanges on jar and lid The unique advantages of ficomfortfl grinding jars˜ Gap between jar and edge of lid for easy opening˜ Stainless steel protective jacket (for agate, sintered aluminum ox- ide, zirconium oxide and tungsten carbide grinding jars)˜ Grinding jar identification (item number, material and volume) ˜ Labeling field (e.g. for sample in- formation) PAGE - 11 ============ PLANETARY BALL MILL S11Accessories for grinding jars ficomfortfl Pressure and Temperature Measuring System PM GrindControl Optimum safety during wet grinding and under inert atmosphereThe Planetary Ball Mills are not only suitable for dry grinding but also for wet grinding, e.g. for the production of colloidal systems. The ficomfortfl grinding jars offer maximum safety. They are gas-tight and dust-proof and can be equipped with special safety closure devices. It permits the gas-tight handling inside and outside of a glovebox and ensures the safe transport of the grinding jar. Furthermore, overpressure which may build up during and after the wet grinding process cannot escape.The aeration cover is used to create an inert atmo- sphere in the grinding jar. In order to understand the processes which occur during grinding with ball mills (e.g. chemical reactions, phase changes), it is helpful to record the most important thermodynamic pa- rameters: pressure and temperature. Planetary Ball Mills are frequently used for the development of new ma- terials by mechanical alloying due to their high energy input. The process- es and reactions which take place in the grinding jar during grinding can be monitored and controlled. The PM GrindControl is available with a stainless steel grinding jar of 250 ml or 500 ml. A bidirectional connection between grinding jar and PC ensures the sending and receiving of data. The jar lid is equipped with a sender/re- ceiver module, the corresponding module is connected to the PC via a USB flash drive. Thus, grinding jar and PC communicate via a robust and secure wireless connection.The measurement data can be re- corded with different sampling rates; the longest interval is 5 seconds, the shortest 5 milliseconds.The data are exported by mouse click and are available in ASCII format so that they can be easily processed with common software programs such as Excel. The complete system Œ including ac- cessories such as the grinding jar and a conversion kit for gassing Œ is delivered in an aluminum case. Benefits at a glance ˜ Measurement ranges gas pressure: up to 500 kPa temperature: 0 - 200 °C ˜ No modification of the mill required˜ Indoor range approx. 15 m ˜ Max. operating time with fully charged accumulator 80 h ˜ Simultaneous operation of 4 measurement systems possible ˜ Multilingual software ˜ Robust design Grinding jar ficomfortfl with safety closure device Aeration cover 275 KB – 12 Pages