In the simplest form which is completed by hand, the craftsman will produce one brick on the time by stuffing a lump of soft clay in a mould and the extra clay is stuff from the head of the mould and the brick is grew to become out. The mold is lubricated with either sand or water to evade the brick from sticking in the mold. In this manner hydraulic or compressed air rams is used to press clay with very low plasticity, containing no more than ten percent of water by weight, into metal moulds under pressures from 500 to 1500 psi growing a completely compact and dense brick. Prior to the brick to be fired in the kiln, after the brick is formed using any of the strategy describes above, it containing 7 to 30 % of moisture, relying upon the forming strategy. This moisture needs to be removed past to the brick can also be fired in the kiln in another way, there may be formation of scum and likely mechanical defects from occurring or the brick will explode when the brick is field to the severe heat of the kiln. This drying system which last approximately 18 to 40 hours, is consistently done by inserting the green brick in enclosed dryer which utilize excess heat provided from the exhaust heat of kiln to maximise thermal effectivity.
Aig And The American Taxpayers A Case Study Solution