A wide range of industrial processes rely on blenders,
mixers, and agitators to mix chemicals and materials as a portion of their
production process. In most cases, the substances that are being blended or
mixed have similar consistencies and are easily combined. When unlike materials
with differing consistencies, such as powders, granules, and other dry
materials, need to be mixed, a greater amount of force is necessary to
breakdown lumps and chunks that the traditional blending process is unable to
To resolve the issue of lumps and clumps in materials to be
blended, high speed specially designed equipment is used to apply greater force
using uniquely designed discs. Dispersers (HSDs) are a form of blending machinery
that attacks difficult materials through the use concentrated force and power.
What is a Disperser?
A disperser is a form of mixing device that uses high speed
and concentrated force to dissolve, disintegrate, and dissipate solids that
form in liquids and powdered substances during the blending and mixing process.
Using disc shaped blades attached to a mixing shaft, the blades of the device rotate
at maximum speed to achieve proper flow, consistency, and dispersion.
Determining the proper amount of dispersion is dependent on
the size of the mixing container and materials that are being mixed. The
function of a high-speed disperser is to reduce lumps, pieces, solids, and
masses to a particulate form necessary for the blending application. Dispersion
is accomplished through the use of a counter current process that subjects
clumped materials to sufficient force to disintegrate and pulverize them.
Disperser Applications –
Mixing of ingredients is a natural part of food production,
which uses mixing equipment that matches the needs of the substances being
blended. Dispersers are a necessary part of the process of liquifying solid
ingredients and ones that solidify during storage. Specialty foods such as
blended cheeses, salad dressings, and spicy foods necessitate dispersion to be
Aside from the food industry, other industrial operations
use blending and mixing as a part of their processes. In many cases, the
substances that are being blended are incompatible and require extra force to
break them down for proper mixing and blending.
This is especially true in cosmetics, adhesives, coatings,
and pharmaceutical production where the proper blending and composition of the
materials is necessary for the quality of the final product. The unique array
of chemicals and materials that are used to produce high quality and safe
commercial goods requires blending processes that can meet the needs of the
Requirements for Proper Dispersion –
As with any form of heavy-duty equipment, dispersing
machinery has to be applied to an application properly. In the case of an HSD,
there are precisely defined conditions that have to be followed for the
equipment to perform properly. The use of an HSD in a mixing tank that is too
large or too small will damage it and produce poor quality blending.
It is essential that an HSD be operated at its design ratio,
which includes a shaft speed of 4800 to 5200 fpm. The purpose and function of a
disperser is to breakdown dry agglomerates in liquid substances and wet dry
particulates to produce a stable particle size.