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  6. Tabletop type, ideal for research and development environments: D20SL (manual lift type) automatic mortar and pestle.

Tabletop type, ideal for research and development environments: D20SL (manual lift type) automatic mortar and pestle.

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Ishikawa Type Stirring and Crushing Machine D20SL (Pestle Lifting Type)

last updated:Jan 08, 2026

石川工場
石川工場
  • Official site

The pestle rotation part rises and falls, making it easier to exchange the mortar and pestle, remove the ground material after grinding, and clean the machine. A tabletop machine for simultaneous stirring and dispersion processing.

**Features** - Achieves a compact design while retaining the characteristics of the Ishikawa-type stirring and grinding machine. - Improved chemical resistance due to the use of a stainless steel casing, expanding its applications in laboratories and clean rooms. - The elevation of the pestle rotation part makes it easy to replace mortars and pestles, retrieve ground materials after grinding, and clean the machine. - Being a tabletop model allows for use within draft chambers or glove boxes, enabling grinding of organic solvents and more. **Suitable Use Cases** - Ideal as an automatic mortar and pestle in laboratories for various standard tests. - Dispersing, kneading, and grinding slurries, pastes, and colloids in an argon gas atmosphere using a glove box. - Achieves uniform dispersion and kneading treatment during the concentration process of slurries and pastes with solvents added in a draft chamber, utilizing the stirring effect of the pestle and the grinding action of the pestle tip. - Compared to ball mills and planetary ball mills, it requires less processing energy, making it suitable for material development in mechanical alloying and mechanochemistry.

    Emulsifier/DisperserMixer/agitatorFine grinding machine
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Tabletop type, ideal for research and development environments: D20SL (manual lift type) automatic mortar and pestle.

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各部の名称用.png

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**Features of the Ishikawa Type Stirring and Grinding Machine** The following features are available: (1) Unique design allows for uniform and even stirring and grinding treatment within the bowl. (2) Simultaneous stirring and grinding processing is possible. (3) High driving torque enables processing of high-viscosity materials. (4) Lower processing energy compared to ball mills, allowing for "mild processing." **Basic Specifications of the Product** - The pestle rotation part can be raised and lowered, making it easy to exchange mortars and pestles, retrieve ground materials after grinding, and clean the machine. - Selection of bowls/pestles according to application: Porcelain, alumina, stone mill. - Adjustable rotation speed/work time: Equipped with an inverter/digital timer. - Standard safety measures: Equipped with a splash prevention and safety cover (made of acrylic). A safety device ensures the machine does not operate without the cover attached. **Introduction to the Testing Laboratory** You can use the experimental machine for free to evaluate the functions and performance of the Ishikawa Type Stirring and Grinding Machine. Additionally, our staff, who are well-versed in stirring and grinding processing, will support your experiments according to your needs. Furthermore, we will propose the optimal selection of the Ishikawa Type Stirring and Grinding Machine for your processing needs and recommend stirring and grinding treatments. Please feel free to utilize this when considering your options.

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Applications/Examples of results

Electronic component IC materials, various sensor materials, ferrite magnet materials, conductive metal paste, silver paste, magnetic paste, carbon paste, battery materials (electrode materials), solder materials, secondary batteries, all-solid-state batteries, carbon nanotubes (CNT), ointment materials, dental materials such as denture materials, artificial bones, cosmetic materials, paint powders, adhesive additives, ink materials, explosives, grease additives, red ink, sumi ink, glazes, dyes, pigments, paints, lacquer materials, fine ceramic powders, sensor materials (porous materials), precious metal powders, carbon powders, glass additives, powder metallurgy, alumina, metal and mineral samples, grinding wheel materials (grinding grains), diamond, boron nitride, silicon carbide, corundum, foundation, color materials, metal powders (such as titanium), soba, udon, high-end Japanese sweets (bean paste, dough), Western sweets (castella dough), curry roux, powdered soup, tofu, konjac, wasabi pickles, kamaboko, hanpen, ground meat, Western cuisine, Japanese cuisine, grilled meat, ground sesame.

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Ishikawa-style stirring and grinding machine (Kakuhan Raikai machine) D20SL (desktop type / hammer lift type) stirring, dispersion, kneading, mixing, grinding, and blending.

Ishikawa-style stirring and grinding machine (Kakuhan Raikai machine) D20SL (desktop type / hammer lift type) stirring, dispersion, kneading, mixing, grinding, and blending.

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[Comprehensive Catalog] Ishikawa-style Automatic Mortar and Pestle, Ishikawa Factory Co., Ltd.

[Comprehensive Catalog] Ishikawa-style Automatic Mortar and Pestle, Ishikawa Factory Co., Ltd.

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D18S/D20S/D22S tabletop model (mixing, grinding, dispersion, kneading, ceramics, conductive paste, with extensive achievements in all-solid-state battery development)

D18S/D20S/D22S tabletop model (mixing, grinding, dispersion, kneading, ceramics, conductive paste, with extensive achievements in all-solid-state battery development)

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Dependence of Zeolite Particle Distribution on Grinding Time

Dependence of Zeolite Particle Distribution on Grinding Time

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**Summary** To understand the performance of the Ishikawa-type mixing and grinding machine produced at the Ishikawa factory, zeolite was used as the standard material to clarify the relationship between grinding time and particle size distribution through experiments. First, experiments were conducted using the D18S (desktop machine) to examine the relationship between the particle size distribution of zeolite and grinding time. The grinding times were varied at 15 minutes, 30 minutes, 1 hour, 2 hours, and 4 hours, with 2g samples taken at each interval. These samples were then analyzed for particle size distribution using a laser diffraction particle size measurement device. **Conclusion** In the particle size distribution, the peak value (mode) was 0.4μm for grinding times up to 1 hour. After 2 hours of grinding, it was 0.1μm. The standard deviation, which represents the variation in particle size, decreased with longer grinding times. However, beyond 2 hours, it saturated and remained almost constant at 3μm. From this, it can be concluded that within the experimental range, the relationship between the particle size distribution of zeolite and grinding time using the D18S shows that longer grinding times result in smaller particle size (mode) and less variation (standard deviation), but after 2 hours, it becomes constant.

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石川工場

石川工場

Industrial Machinery

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Our company is a specialized manufacturer of automatic mortar and pestle machines. The features of the automatic mortar and pestle (Ishikawa-style stirring and grinding machine) include the ability to simultaneously perform stirring, grinding, mixing, and kneading using unique technology. It has the following basic capabilities: 1. Uniform and precise mixing is possible - Allows for uniform mixing while controlling particle size. 2. Easy uniformity and control of particle size - Can achieve uniform particle size while finely grinding. 3. Prevents excessive deterioration of materials - Due to low mechanical stress (mild processing energy), it can process while suppressing over-grinding and chemical changes. - High-energy processing (such as ball mills) can cause reaction changes due to heat generation, but temperature management is easier with the automatic mortar and pestle. 4. Suitable for small-scale prototyping and experiments - Ball mills and planetary mixers require large amounts of raw materials, but the automatic mortar and pestle can prototype with a minimum of 0.5g. - Easily adaptable for process scale-up (easy application from small to large scale). 5. Capable of processing slurries, pastes, and high-viscosity materials - The motor torque for the pestle rotation is high, allowing for processing of high-viscosity materials.

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