The Planetary Ball Mill PM 100 is a powerful benchtop model with a single grinding station and an easy-to-use counterweight which compensates masses up to 8 kg. It allows for grinding up to 220 ml sample material per batch.
The extremely high centrifugal forces of Planetary Ball Mills result in very high pulverization energy and therefore short grinding times.
The PM 100 can be found in virtually all industries where the quality control process places the highest demands on purity, speed, fineness and reproducibility.
The mill is ideally suited for tasks in research like mechanochemistry (co-crystal screening, mechano-synthesis, mechanical alloying and mechanocatalysis), or ultrafine colloidal grinding on a nanometer scale, as well as for routine tasks such as mixing and homogenizing soft, hard, brittle or fibrous materials.
"This is a very high-performing instrument used for the preparation of nanomaterials including new crystalline phases of perovskite materials. We have used it extensively for making semiconductor and perovskite nanoparticles, quantum dots, etc. It is a very rugged and user-friendly instrument and we have been using it over a decade without much trouble. Its a highly recommended instrument for material research. "
Pravat Giri
Indian Institute of Technology Guwahati
"I use Retsch ball mill PM100 for preparing sample for hydrogen storage applications. This setup is very useful for the required materials."
Chhagan Lal
University of Rajasthan
"It was really simple and safe to use, easy to clean and it helped me with my thesis investigation. I would really recommend this product. "
Jenifer Sauzameda
Dermabon
"This is such an effective planetary ball mill. As an academic and active laboratory researcher, I would choose the best product to conduct my experiments and the PM 100 is a good example. "
Erkul Karacaoglu
Karamanoglu Mehmetbey University
"Absolutely good to use and easy to handle, long lasting compared to other brands. Highly recommended for regular users."
Md Shalauddin
University of Malaya
"It is a versatile instrument that cuts the grinding time by orders of magnitude."
Dragos Zaharescu
University of California, Davis
得益于完美符合人体工程学的操作同时，研磨效果也能做到相同的精细程度，出料细度可达纳米级。
Planetary mills with a single grinding station require a counterweight for balancing purposes. In the planetary ball mill PM 100 this counterweight can be adjusted on an inclined guide rail to compensate for the different heights of the centers of gravity of differently-sized grinding jars and thus avoid undesired oscillations of the machine.
Operation of the RETSCH planetary ball mills is particularly safe. They feature a robust Safety Slider which ensures that the mill can only be started after the grinding jar has been securely fixed with a clamping device. The self-acting lock ensures that the jar is seated correctly and securely. This proven solid mechanical system is less failure-prone than electronic solutions - the user has full access to the sample at any time. When the electronic system fails, it is not possible to unlock the jars, for example.
Wet grinding is used to obtain particle sizes below 5 µm, as small particles tend to get charged on their surfaces and agglomerate, which makes further grinding in dry mode difficult. By adding a liquid or dispersant the particles can be kept separated.
To produce very fine particles of 100 nm or less (nano-scale grinding) by wet grinding, friction rather than impact is required. This is achieved by using a large number of small grinding balls which have a large surface and many friction points. The ideal filling level of the jar should consist of 60 % small grinding balls.
For more details on jar filling, wet grinding and sample recovery watch the video.
The graphic shows the result of grinding alumina (Al2O3) at 650 rpm in the PM 100. After 1 h of size reduction in water with 1 mm grinding balls, the mean value of the particle size distribution is 200 nm; after 4 h it is 100 nm.
Grinding of alumina in water with 1 mm grinding balls (left) after 1 hour (blue) and after 4 hours (green)
In another trial, the material was first pulverized for 1 hour with 1 mm grinding balls and then for 3 hours with 0.1 mm grinding balls. In this case, an average size of 76 nm was achieved.
Grinding of alumina with 1 mm grinding balls (1 hour) and then with 0.1 mm balls (3 hours) in water
The results show that planetary ball mills can produce particle sizes in the nanometer range. The choice of the right ball size, the type of liquid and the liquid/solid ratio (viscosity level) play a crucial role in this process.
With a special adapter, co-crystal screening can be carried out in a planetary ball mill, using disposable vials such as 1.5 ml GC glass vials. The adapter features 24 positions arranged in an outer ring with 16 positions and an inner ring with 8 positions. The outer ring accepts up to 16 vials, allowing for screening up to 64 samples simultaneously when using the Planetary Ball Mill PM 400. The 8 positions of the inner ring are suitable to perform trials with different energy input, e.g. for mechanosynthesis research.
To produce optimum grinding results, the jar size should be adapted to the sample amount to be processed. The grinding balls are ideally sized 3 times bigger than the largest sample piece. Following this rule of thumb, the number of grinding balls for each ball size and jar volume is indicated in the table below. To pulverize, for example, 200 ml of a sample consisting of 7 mm particles, a 500 ml jar and grinding balls sized at least 20 mm or larger are recommended. According to the table, 25 grinding balls are required.
| Grinding jar nominal volume |
样品数量 | 最大进样尺寸 | Recommended ball charge (pieces) | ||||||
| Ø 5 mm | Ø 7 mm | Ø 10 mm | Ø 15 mm | Ø 20 mm | Ø 30 mm | ||||
| 12 ml | 直至 ≤5 ml | <1 mm | 50 | 15 | 5 | - | - | - | |
| 25 ml | 直至 ≤10 ml | <1 mm | 95 – 100 | 25 – 30 | 10 | - | - | - | |
| 50 ml | 5 – 20 ml | <3 mm | 200 | 50 – 70 | 20 | 7 | 3 – 4 | - | |
| 80 ml | 10 – 35 ml | <4 mm | 250 – 330 | 70 – 120 | 30 - 40 | 12 | 5 | - | |
| 125 ml | 15 – 50 ml | <4 mm | 500 | 110 – 180 | 50 – 60 | 18 | 7 | - | |
| 250 ml | 25 – 120 ml | <6 mm | 1100 – 1200 | 220 – 350 | 100 – 120 | 35 – 45 | 15 | 5 | |
| 500 ml | 75 – 220 ml | <10 mm | 2000 | 440 – 700 | 200 – 230 | 70 | 25 | 8 | |
The table shows the recommended charges (in pieces) of differently sized grinding balls in relation to the grinding jar volume, sample amount and maximum feed size.
RETSCH planetary ball mills are perfectly suitable for size reduction of, for example, alloys, bentonite, bones, carbon fibres, catalysts, cellulose, cement clinker, ceramics, charcoal, chemical products, clay minerals, coal, coke, compost, concrete, electronic scrap, fibres, glass, gypsum, hair, hydroxyapatite, iron ore, kaolin, limestone, metal oxides, minerals, ores, paints and lacquers, paper, pigments, plant materials, polymers, quartz, seeds, semi-precious stones, sewage sludge, slag, soils, tissue, tobacco, waste samples, wood, etc.
40 g sample
500 ml stainless steel grinding jar
8 x 30 mm stainless steel grinding balls
5 min at 380 rpm
315 g sample
250 ml tungsten carbide grinding jar
15 x 20 mm tungsten carbide grinding balls
5 min at 500 rpm
45 ml sample
125 ml stainless steel grinding jar
7 x 20 mm stainless steel grinding balls
2 min at 400 rpm
200 ml sample
250 ml zirconium oxide grinding jar
15 x 20 mm zirconium oxide grinding balls
30 min at 480 rpm
20 g sample
125 ml zirconium oxide grinding jar
50 x 10 mm zirconium oxide grinding balls
30 min at 380 rpm with direction reversal
170 ml sample
500 ml zirconium oxide grinding jar
8 x 30 mm zirconium oxide grinding balls
3 min at 450 rpm
4 sample pieces
50 ml zirconium oxide grinding jar
3 x 20 mm zirconium oxide grinding balls
2 min at 420 rpm
50 g sample + 70 g oil
50 ml zirconium oxide grinding jar
1100 g 3 mm zirconium oxide grinding balls
2 h at 480 rpm (interval operation with 10 min grinding / 10 min break = net grinding time 1 h)
为了找到最好的解决方案，请访问我们的应用数据库。
Our instruments are recognized as the benchmark tools for a wide range of application fields in science and research. This is reflected by the extensive citations in scientific publications. Feel free to download and share the articles provided below.
| 应用 | pulverizing, mixing, homogenizing, colloidal milling, mechanical alloying, mechanosynthesis, nano grinding, co-crystal screening |
| 应用领域 | 农业, 化学, 医药, 地质/冶金, 工程/电子, 建筑材料, 环境/循环, 玻璃/陶瓷, 生物 |
| 样品特征 | 软性, 硬性, 脆性, 纤维质—干或湿 |
| 粉碎原理： | 撞击力，摩擦力 |
| 最大进样尺寸 | < 10 mm |
| 最终出料粒度 * | 用于胶体研磨，出样小于０.１微米 |
| 批次加料量* | 最大 1 x 220 毫升 使用堆叠管时：最大 2 x 20 毫升 |
| 研磨平台数 (可接纳研磨罐数) | 1 |
| 转速比设定 | 1 : -2 |
| 太阳轮转速 | 100 - 650 min-1 |
| 有效太阳轮直径 | 141 mm |
| 重力 | 33.3 g |
| 研磨罐种类 | EasyFit, optional areation covers, safety closure devices |
| 研磨套件材料： | 硬质刚, 不锈钢, 碳化钨, 玛瑙, 烧结刚玉, 氮化硅, 氧化锆 |
| 研磨罐尺寸 | 12 ml / 25 ml / 50 ml / 80 ml / 125 ml / 250 ml / 500 ml |
| Stackable grinding jars | 12 ml / 25 ml / 50 ml / 80 ml |
| Adapter for single-use glas vials | 24 x 1.5 ml / 7 x 20 ml |
| 粉碎时间设定 | 数字式，00:00:01至99:59:59 |
| 间歇驱动 | 可以，反向转动 |
| 转动时间 | 数字设定 00:00:01 至 99:59:59 |
| 暂停时间 | 数字设定 00:00:01 至 99:59:59 |
| 可存储运行模式 | 10 |
| 串行接口 | RS 232 / RS 485 |
| 驱动 | 带变频器的三相交流电动机 |
| 驱动功率 | 750瓦 |
| 电源数据： | 不同电压 |
| 电源接头： | 单相 |
| 防护类型 | IP 30 |
| 接受功率 | ~ 1250W (VA) |
| 机体尺寸（宽x高x纵深） | 640 x 480 (780) x 420 mm |
| 净重 | ~ 86 kg |
| 标准 | CE |
| 专利/实用专利 | 配重（DE 20307741），FFCS（DE 20310654），安全滑块（DE 202008008473）。 |
行星式球磨仪的研磨罐位于底部太阳轮的偏心位置。研磨罐绕轴自转，与公共的太阳轮转动方向正好相反，太阳轮与研磨罐的转速比为1：-2。研磨罐中的球在于研磨罐一起运动时受到Coriolis力（即自转偏向力）的叠加影响。
研磨罐和研磨球的运动速度之差产生强摩擦力和撞击力，因而释放了大量的动能。这种撞击和摩擦的组合使得行星式球磨仪研磨时的粉碎度及高。 为了保持运动时的平衡，拥有一个研磨工位的行星式球磨仪需要配重。PM 100型行星式球磨仪的配重可在一条倾斜的导轨上调整。不同大小的研磨罐的不同重心高度由此得到精确的补偿，从而避免了仪器运行时的晃动和振荡。
剩余的振动可以通过仪器底座的微小自由运动（底座自由力补偿）得到补偿。这种新型的FFCS技术基于d’Alembert原理，允许机身作很小的回旋运动，自动完成质量补偿。实验桌面只受到仪器底座产生的微小摩擦力。
PM 100型行星式球磨仪运行时安静、安全，即使在罐内振动达到最大时仍能保证最优的振动补偿，因此可置于实验室桌面，无需监护。
保留技术变更和出错的权利
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