The given process diagram illustrates the various stages involved in the process of recycling glass drink bottles. In the first stage, recycled glass, soda ash, sand and other raw materials are fed into a furnace where they are heated to 1500° centigrade and melted. The molten material is then sent to a fore hearth, where the temperature is made uniform. The next stage involves using a cutting machine to cut the molten glass into identical pieces before forcing it into the shape of a bottle using a mould. The temperature of the bottles is reduced to less than 1150°c before passing them through a rapid cooling process, in which the temperature is further dropped to below 500°c. Upon cooling down, the bottles are conditioned to make them more durable by exposing them to extreme temperature of up to 1200°c. Afterwards, when the temperature of bottles falls below 500°c, they become ready for surface treatment, which involves first cooling the bottles to 120°c and then spray coating them provide a smooth texture. This is followed by a quality check which identifies faults. Those bottles which do not pass the quality control check are rejected and recycled in the furnace, while the bottles which meet the quality standards are packed and made ready for delivery. Overall, this is a man-made linear process consisting of nine stages, starting from heating the raw material and ending at the delivery of the finished product.
The
given
process
diagram illustrates the various
stages
involved in the
process
of recycling glass drink
bottles
. In the
first
stage
, recycled glass, soda ash, sand and other raw materials
are fed
into a furnace where they
are heated
to 1500° centigrade and melted. The molten material is then
sent
to a fore hearth, where the
temperature
is made
uniform. The
next
stage
involves using a cutting machine to
cut
the molten glass into identical pieces
before
forcing it into the shape of a
bottle
using a
mould
.
The
temperature
of the
bottles
is
reduced
to less than 1150°c
before
passing them through a rapid cooling
process
, in which the
temperature
is
further
dropped to below 500°c. Upon cooling down, the
bottles
are conditioned
to
make
them more durable by exposing them to extreme
temperature
of up to 1200°c. Afterwards, when the
temperature
of
bottles
falls below 500°c, they become ready for surface treatment, which involves
first
cooling the
bottles
to 120°c and then spray coating them provide a smooth texture. This
is followed
by a quality
check
which identifies faults. Those
bottles
which do not pass the quality control
check
are rejected
and recycled in the furnace, while the
bottles
which
meet
the quality standards
are packed
and made ready for delivery.
Overall
, this is a
man
-made linear
process
consisting of nine
stages
, starting from heating the raw material and ending at the delivery of the finished product.