Category Archives: Solutions

Laboratory disperser

Dispersers are special devices designed for fine grinding and subsequent uniform distribution of particles throughout a given volume. Dispersers are well suited for working with multicomponent systems that can not be overheated. They find wide application in various industries: chemical industry, food industry, pharmaceuticals, oil refining, as well as in agriculture and construction.

But the dispersers are not limited to industrial use only. These devices are also in demand in chemical and biological laboratories. Laboratory disperser is used to obtain small samples, in glasses or test tubes. Such equipment develops fundamentally new recipes, makes changes to existing ones, and conducts various experiments determining the degree of grinding of certain substances and their behavior under certain conditions during dispersion.

GlobeCore offers a laboratory disperser colloid mill KLM. This colloid mill has a number of advantages: it obtains highly stable colloidal solutions, extremely thin suspensions, mixtures and emulsions. GlobeCore colloid mills are not only dispersers, but also homogenizers. In fact, by getting one unit, you get  the functions of two.

The laboratory disperser operates on the principle of “wet grinding”, due to width gap difference at the inlet and outlet of the mill. The higher degree of grinding is achieved due to such factors:

  • complex geometric micro reliefs of rotor surface (increases turbulence);
  • centrifugal forces;
  • high relative speed between rotor and stator;
  • grinding;
  • cavitation.

The productivity of the GlobeCore laboratory colloid mill is 1.8 m3/h, but, it is possible to produce a disperser on an individual order, specially for your laboratory.

Mixer, homogenizer and disperser: how do they compare?

A question that is often asked: why do we need a disperser, when we already have a mixer? First, let’s look at the definitions. A mixer is a device that is generally used in cooking for mixing food products. In fact, a mixer simply mixes the components in a container. As for a disperser, it grinds the raw material, producing a homogeneous mixture.

Theoretically, it is possible to produce emulsions (suspensions) with a mixer, but because the large particles will still be present, the emulsion will not be stable, and in the course of time it will break.

There is another appliance that is similar in purpose – a homogenizer. It mixes solid and liquid components to obtain mixtures of uniform consistency. Homogenization, partially include dispersing, but rather as an additional effect, and not the main process. Functionally, a homogenizer is a mixer for industrial use.

GlobeCore advises you not to puzzle over what you need more: a homogenizer or a disperser, and choose a universal option. Colloid mill KLM is at the same time a homogenizer and a disperser. This unit obtains highly stable colloidal solutions, ultrathin suspensions, mixtures and emulsions with particle size 1 μm. This result is provided by a number of factors that occur in a colloid mill:

  • centrifugal forces;
  • high relative speed between rotor and stator;
  • grinding;
  • cavitation;
  • increased turbulence, etc.

GlobeCore colloid mills can easily integrate into existing production lines to increase their efficiency. The components are fed into the mill at a certain ratio of solid and liquid phases to provide a constant productivity.

Priority characteristics of a homogenizer

When choosing this or that technical device, it is necessary to take into account its every characteristic, so that there are no complications during operation. Let’s look at the main characteristics of a homogenizer, which should be considered in the first place.

Is it necessary to start with performance. It you are producing products in small volumes then a KLM homogenizer of GlobeCore 4 m3 / h should be enough for you. If you produce popular products for constant demand, you will need  a bigger capacity KLM homogenizer 22 m3 / h.

Another important parameter is the overall dimensions. They are important when you buy a homogenizer for an existing technological line. A new device should not exceed the set dimensions.

Dispersion is another important characteristic. It depends on the type of products. Food requires one, and bitumen emulsion – another.

Weight of a homogenizer allows a convenience of transportation and its mobility for repair or maintenance.

Equally important is the reliability, and a long service life, time between failures, as well as the length of complete service. Knowing these parameters, you can plan and optimize the workflows in your production.

High pressure valve homogenizers with plunger pumps

High pressure homogenizers with plungers and adjustable valves realize the one-, two- and three-stage homogenization. The basis of such homogenizers is the valve system that creates a high pressure. The raw material passes through small openings in the valves, is exposed to high turbulence, that splits the product into particles. The particles dimensions are determined by the hydrodynamic conditions created in the valve zone.

Also, the valve homogenizers include multiple-plunger pumps (three-, five- or seven- plunger), a homogenizing head, an electric drive, a pressure detector, and other electrical equipment in a frame construction.

A homogenizing head provides an improved homogenization. The material is fed under high pressure into the channel, it moves at high speed through a narrow opening of the valve. The width of the valve seat does not exceed 0.1 mm, and the velocity of the substance is from 150 to 200 m/s.

In practice the working surface is flat, conical or disc shape with a small cone angle.

Valve homogenizer performance is adjusted by changing the pressure of homogenization.  Greater pressure means a more efficient process.

Dispersers and homogenizers

Universalization of equipment is one of the most important and urgent tasks. It means: a single device performing various operations. The benefits of it are obvious: with the right approach, you can significantly reduce costs while maintaining the required quality of the products.

Dispersers and homogenizers are widely used in the food industry, pharmaceuticals, chemical industry, road construction, etc. They cover each other’s functions: a disperser grinds the particles of the substances, and a homogenizer makes the product homogeneous. Very often in literature these terms are used as synonyms, although in reality these devices are different. Although it can be said that a homogenizer is a disperser. There are devices that successfully combine the functions of homogenization and dispersion – they are colloid mills.

Colloidal grinding result in particle size that are equal to fractions of the micrometer. Almost always a colloidal grinding is wet. Depending on the kind of the crushed material, the ratio of solid and liquid phases can vary from 1: 2 to 1: 6. One of the main requirements for a dispersive medium is that it should not dissolve a dispersed phase.

The company GlobeCore produces colloidal mills of the KLM type, which obtain highly stable solutions, ultrathin suspensions, mixtures and emulsions. Thus, a colloid mill KLM can be successfully used in production  that needs a combination of both a dispersant and the homogenizer.

The factors  that affect the raw materials in KLM are:

  • complex geometric reliefs of rotor surface increases turbulence that shears the product particles;
  • centrifugal forces;
  • high relative speed between a rotating rotor and a stationary stator;
  • grinding;
  • cavitation.

GlobeCore colloid mills can be successfully integrated into existing technological lines, increasing their efficiency. The quality grinding, is achieved through optimal ratio of the dispersed and dispersive phases.

High-pressure homogenizers

High-pressure homogenizers work with a low-viscous dispersions. Such devices operate in a continuous mode.

Homogenizers of high pressure are divided into counter jet dispersers, axial nozzle systems and radial diffusers. Jet dispersers collide two or more jets at high speed. The pressure of homogenization and the flow rate of substances can be adjusted by changing the gap width (with the help of flap-valve).

In axial nozzle systems the liquid moves through a nozzle at high pressure that creates cavitation and turbulent flow conditions. These two schemes are combined joining a nozzle and valves.

The main feature of jet dispersers and axial nozzle systems is the absence of moving elements, which allows to create a higher pressure in comparison with the radial diffusers.

Homogenization under high pressure creates turbulent flow condition, cavitation and shear forces. The resulting emulsion droplet size is determined by pressure, temperature, flow rate, dispersed phase concentration,which in turn depends on the valve design of a homogenizer.

High-pressure homogenizers can be used to produce so-called nano-emulsions, with a droplet diameter 100 nm or less. At the same time, such homogenizers are not recommended for preparation of emulsions with  dispersed phase having a high viscosity. This is due to a greater diameter of the droplets.

Industrial analogue of Robot Coupe processor

Robot Coupe food processor is an appliance that creates homogeneous food mixtures. In fact, these processors are hand mixers for household kitchens. In a restaurant such homogenizer is irreplaceable. But if you need to produce a certain products in large quantities? Of course, you would use an industrial analogue of Robot Coupe.

Other devices that perform homogenization can be considered as substitutes. For our part, we offer your consideration a colloid mill KLM. First a colloid mill appeared at the beginning of the last century, and since then this device has found its applications in many industries: pharmaceuticals, chemical industry, road construction, food industry, etc.

Among the advantages of KLM colloid mill from GlobeCore are homogenization and dispersing the particles of the processed products. The degree of grinding is 1 μm.

KLM colloid mill achieves uniformity, fineness and homogeneity of the products due to centrifugal force and a high relative speed of the magnetic field between a rotating rotor and stationary stator. The mill uses so-called “wet grinding”. Particle reduction to the required degree is done through increased turbulence, which is created due to the complex geometric reliefs of rotor surface. Also a colloidal mill creates cavitation that enhances the impact on the processed raw materials.

For production in industrial quantities, the initial components at a set ratio of solid and liquid phases are fed into the colloid mill KLM to achieve the necessary productivity.

For the needs of the food industry, GlobeCore produces colloid mills with capacity 22 m3/h. However, it is possible to fulfill individual orders with adjustment of design and performance to solve specific problems.

The degree of grinding can vary depending on the physical and mechanical properties of the crushed material phase.

Homogenization of Honey

homogenized

Homogenized. Homogenization of honey is a process of thorough mixing of its entire volume before pouring it into jars. Prior to the process, the honey is heated to 40C in a container equipped with special mixers and a heater.

Homogenization of honey is usually beneficial both to producers and to consumers, as it converts honey, the viscous material that resists shear flow, into fluid and ensures its uniform thickness.

Homogenization of HoneyGlobeCore food homogenizers increase the uniformity of honey by creating small and uniform crystals of the substance.

Advantages of homogenized honey:

  • Does not harden, making packing easier;
  • Has improved organoleptic properties.

A homogenizer allows the producer to regulate the temperature of honey, and to select honey treatment.

Benefits of GlobeCore honey homogenizers:

  • Easy to operate and maintain;
  • Increased stability of honey, while preserving flavor
  • Absence of foam;
  • Crystallized honey in a stable structure;
  • High hygienic standards.

GlobeCore honey homogenizers also mix several varieties of honey and can produce the so-called cream-honey.

For advice on this equipment and to order use the tab “Contact”.

Production of colloid mill homogenizers

Homogenizers are widely used in various industries. Such devices are designed to obtain stable homogeneous mixtures of multiple components, thoroughly crushing the disperse phases, with the introduction of surfactants for the stability of the mixture.

The manufacturers of homogenizers supply the market with the following types of devices:

  • Mechanical;
  • Ultrasonic;
  • High-pressure homogenizers.

GlobeCore developed KLM colloid mill homogenizers that grind the materials to a particle size of 1 micron. The important advantage of the colloid mill is non aggregation of particles due to wet grinding.

The ratio of liquid and solid phases is determined by the type of processed  materials and can vary from 1:2 to 1:6.

The KLM colloid mill are successfully used in the preparation of food emulsions and suspensions, the production of modified bitumen, bitumen emulsions, varnishes, paints, etc.

The processed material passes through the gap between the rotor and the stator. The centrifugal force rotates the particles around their axis and ruptures them. The grinding effect in the GlobeCore colloid mills is enhanced by other phenomena, such as cavitation and mashing.

In addition, there are other benefits that allow KLM colloid mill to hold a leading position in homogenization on the market:

  • The variety of design of electric motors (general purpose industrial version or explosion proof), depending on the conditions of future operation;
  • Adjustment of the fineness of grinding;
  • Obtaining stable products with the desired performance;
  • A high degree of homogenization;
  • The mills are constructed from the material requested by the customer (black metal, stainless steel, chemical stainless steel, etc.).

Dispersion in the food industry

One of the most important characteristics of the emulsion is its stability. The stability is measured by the time until the emulsion separates. A popular method to achieve a stable product in the food industry is dispersion by simple mechanical agitation using a stirrer (turbine mixer, screw mixers, blade mixer, mill, anchor stirrer, gate mixer, etc.).

Dispersing and emulsifying is also performed by valve, vacuum, centrifugal, rotary and ultrasonic homogenizers. Statistically, the most commonly used are valve homogenizers. The principle of their operation is high pressure (8-25 MPa) generated in a small gap between the valve and the valve seat. The drawback of such devices is the rapid wear of valves and seals when producing fine dispersions (particle size of 1-1.8 microns). Also, valve homogenizers are energy-intensive and are difficult to service.

Rotary devices are easier and less energy-intensive. But they too have their disadvantages. Their main disadvantage is foaming of the product during processing.

The rotary-pulsating devices operate on the principle of the intervals in the product flow in the rotor-stator system. It causes cavitation, hydrodynamic shocks and turbulence, which provide dispersion.

Among these homogenizers, a special place belongs to the colloid mills. They are fine grinding devices and can simultaneously disperse and homogenize the material. The treated mixture is passed through the gap between the rotor and the stator.

GlobeCore produces KLM colloid mills, intended for production of highly stable colloidal solutions, extremely fine suspensions, mixtures and emulsions. Additionally, a complex geometric surface of the rotor creates a greater turbulence which breaks the particles of the product.

Under the a centrifugal force and high relative speed between the rotating rotor and the stationary stator, the liquid and semi-liquid materials become uniform, finely divided and homogeneous mixtures and emulsions.

The heating jacket supplies or removes heat in the grinding zone.