Cooling system for dross pressing head using sand
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United States of America Patent
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Aug 1, 2000
Issued Date -
N/A
app pub date -
Dec 30, 1999
filing date -
Dec 30, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
An improved cooling system for cooling the head of a dross press used in the recovery of non-ferrous metals from dross utilizes a controlled flow of cooling fluid (preferably water) through a cooling coil mounted in particulate matter having a high absorbtivity for heat, preferably sand and most preferably chromite sand. A temperature sensor is mounted within the particulate material or sand, and is used to control the flow of water through the coil in the cooling head. When a temperature above a predetermined value is sensed, water flow through the cooling coil is caused to increase. When the sensed temperature is below a second predetermined value, the controlled water flow through the cooling coil is caused to decrease. Apparatus is also provided for controlling the amount of time that the dross press head is in contact with the dross to be pressed as a function of the temperature of the dross.
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