{"id":4042,"date":"2015-03-26T13:21:45","date_gmt":"2015-03-26T13:21:45","guid":{"rendered":"http:\/\/mirror.s-vt.net\/homogenisiertechnik\/"},"modified":"2026-10-26T00:04:21","modified_gmt":"2026-10-25T23:04:21","slug":"homogenisation-technology","status":"publish","type":"page","link":"https:\/\/www.s-vt.net\/en\/homogenisation-technology\/","title":{"rendered":"Homogenisation Technology"},"content":{"rendered":"

A common form of homogenisation technology is the rotor\/stator system according to Professor P. Willems<\/strong>. Various types of rotors and stators determine the dispersing result \u2013 depending on the rotational speed.<\/p>

How a rotor\/stator system works<\/strong><\/h2>
  1. 1<\/span>Suction<\/strong>The product is drawn centrally into the rotor\/stator system.<\/span><\/li>
  2. 2<\/span>Acceleration<\/strong>The fast-running rotor accelerates it centrifugally outwards.<\/span><\/li>
  3. 3<\/span>Shearing<\/strong>At the toothed rings it is strongly accelerated and braked almost to zero at the shear gap.<\/span><\/li>
  4. 4<\/span>Size reduction<\/strong>The high-frequency shear forces ensure an optimal dispersing<\/a> and emulsifying effect<\/a>.<\/span><\/li><\/ol>

    A stable emulsion requires the largest possible total droplet surface \u2013 this is only achieved with very small droplets and a suitable emulsifier, e.g. for oil\/water or water\/oil emulsions.<\/p><\/div><\/div><\/div>

    Applications of homogenisation technology<\/strong><\/h2>
    <\/i>

    Emulsification<\/a><\/h3>

    Mixing two liquids that do not mix stably: a hydrophobic phase (e.g. oil) and a hydrophilic phase (e.g. water) are permanently combined.<\/p>

    Without emulsifiers, emulsions tend to separate \u2013 their most important property is stability.<\/div><\/div>
    <\/i>

    Suspension<\/a><\/h3>

    Distributing an insoluble solid in a liquid \u2013 often with high turbulence and special rotor geometries, e.g. for active substances<\/a> or colour particles<\/a>.<\/p>

    In pharmaceuticals, suspensions<\/a> are evenly mixed into gels<\/a> and ointments this way to prevent sedimentation.<\/div><\/div>
    <\/i>

    Dissolving<\/h3>

    Dissolving substances in a liquid usually requires high turbulence to ensure efficient production times.<\/p><\/div>

    <\/i>

    Disagglomeration<\/a><\/h3>

    Incorporating and breaking down dry particles (e.g. powders) in liquids. Dry powders tend to form lumps.<\/p>

    These agglomerates are broken up mechanically during dispersing<\/a> \u2013 for the largest possible surface area when wetting.<\/div><\/div><\/div><\/div><\/div><\/div>
    \r\n <\/span>\r\n\t\t\t\t\t

    Decisive for fineness: geometry, shear gap and tip speed<\/h2>\r\n \r\n <\/section><\/div>

    Whether emulsion, suspension, solution or disagglomeration \u2013 three factors determine how fine the result of a homogeniser will be:<\/p>

    <\/i>The right geometry<\/strong>Depends on the viscosity and sensitivity of the product. Suction behaviour, number of teeth and rows of teeth and the size of the tooth gaps all matter.<\/span><\/div>
    <\/i>The shear gap<\/strong>The distance between rotor and stator determines how strongly the product is sheared.<\/span><\/div>
    <\/i>The tip speed<\/strong>The higher the tip speed (m\/s), the greater the dispersing effect \u2013 in combination with geometry and shear gap.<\/span><\/div><\/div>

    The design of the rotor\/stator system is decisive for an optimal dispersing effect. With many years of experience, SEEFRIED Verfahrenstechnik GmbH<\/strong> designs the right dispersing system for your task.<\/p>

    Frequently Asked Questions about homogenization technology<\/strong><\/h2>

    How does a rotor\/stator homogenizer work?<\/h3>

    The rotor runs past the toothed stator at high speed. The product is drawn in centrally, accelerated outwards and sharply decelerated in the shear gap between the teeth. The resulting shear forces break up droplets and particles and ensure an optimal dispersing and emulsifying effect.<\/p>

    What determines the fineness of an emulsion or suspension?<\/h3>

    The decisive factors are the geometry of the rotor\/stator system (number of teeth and tooth rows, size of the tooth gaps), the shear gap width and the peripheral speed \u2013 each matched to the viscosity and sensitivity of the product.<\/p>

    What is the difference between emulsifying and suspending?<\/h3>

    Emulsifying permanently mixes two immiscible liquids, such as oil and water, usually with the help of an emulsifier. Suspending distributes an insoluble solid evenly in a liquid.<\/p>

    Can you help select the right homogenizer?<\/h3>

    Yes. Based on many years of experience, we design the appropriate rotor\/stator system for your product and process requirements.<\/p>

    Planning or optimising a homogenising process?<\/h2>
    We support you in designing and selecting the right rotor\/stator system \u2013 by phone at +49 4203 789492<\/a> or by e-mail at info@s-vt.net<\/a>.<\/div>
    Request a consultation<\/a>Used homogenising mixers<\/a><\/div><\/div>