Sieving
is the process through which unwanted elements are removed from the
wanted elements. This surely is a very lose way to describe the
process of sieving; because many times this technique is also used to
separate particles of various shapes and sizes in order to refine the
product. Usually a siever has a net or a mesh in order to screen out
the unwanted material.
A
sieving machine typically consists of two chambers – one in which
the waste/ unwanted materials are collected; another which collects
the required material. These machines come in various shapes &
sizes and are used depending on the industry of work. Based on their
shape and size sieves can be broadly of three types:
- Perforated
plate sieves: This type of sieve confirms to the ISO 3310-2 and has
a diameter range from 200 to 450 millimeters. The perforated plate
sieves have square/ round nominal apertures which ranges from 1
millimeter to 125 millimeters.
- American
standard sieves: They are also known as ASTM sieves, as they conform
to the ASTM E11 standard. Unlike the perforated plate sieve, ASTM
sieves are available in only 8 and 12 inch diameter sizes. Their
nominal aperuture ranges from 20 micrometers to 200 millimeters.
- Woven
wire mesh sieves: One of the most commonly used sieves, woven wire
mesh sieves conform with the ISO 3310-1. Their nominal aperture
ranges from 20 micrometers to 3.55 millimeters, and when it comes to
their size – these sieves diameter ranges from 100 to 450
millimeters.
As
has already been mentioned, based on the end-requirement, sieves are
selected and brought into use. According to Logos Weld – leading Wire Straightening and Cutting Machines Manufacturer in
India – it is important that the size and capacity of the work load
should be taken into consideration before investing on any such
machines. The other important aspects that needs to be paid attention
to are:
- The
construction of the sieve
- Its
design
- The
housing should be non-corrosive in nature
Most
of all, the sieve should be easy to maintain
Logos
Weld also recommend a sieve analysis test before settling on a
sieving machine. A sieve analysis is basically a process through
which the gradation or the size of the particles to be separated can
be assessed. This test can be performed on organic as well as
non-organic materials. Usually this process is quite widely used in
the area of civil engineering. But those belonging to other
industries too can make use of this analysis so that they choose an
appropriate siever.
For
more information on sieving machines and welding rodmanufacturing plants you can
visit www.logosweld.com
or call at +91 422 2934784.