Introducing the Fire Assay Cupellation Furnace
Release time:
2023-04-17
Cupellation Furnace This is a traditional method for testing metal materials, used to determine the purity of precious metals such as gold. The principle is based on the differences in temperature and oxidation properties between precious metals and other impurity metals. First, the precious metal sample is heated to a high temperature in the furnace. Then, a certain amount of cupel (mainly composed of oxides of silver, copper, and iron) is added. Air is blown into the furnace using a blowpipe for combustion. By observing the changes in the sample's color and the reaction of the cupel, the purity of the precious metal sample, as well as the types and amounts of impurities it contains, can be determined.
A cupellation furnace is a tool commonly used in metal analysis laboratories. Its function is to decompose samples at high temperatures and then determine certain elements contained within them. The following points should be noted when using this tool.
When using a cupellation furnace, a designated person must be on duty, and the laboratory must not be left unattended during use to respond to emergencies. When using a cupellation furnace, temperature control must be performed according to experimental requirements to avoid excessively high temperatures that could cause danger. At the same time, improper operation that could lead to a sudden temperature increase should be avoided during heating. When conducting cupellation experiments, appropriate containers and reagents must be used. Using inappropriate materials can easily cause explosions and other dangers. When conducting cupellation experiments, good ventilation should be maintained to prevent the leakage of smoke, toxic gases, and other hazardous substances, and to protect the health of laboratory personnel.
When conducting cupellation experiments, personal safety precautions should be taken, such as wearing safety glasses and keeping the operating surface dry to prevent personnel from slipping and falling. By following these precautions, the safe and effective use of the cupellation furnace can be ensured. In short, laboratory regulations must be followed, and the prescribed experimental procedures must be strictly implemented to ensure the smooth and safe conduct of the experiment.
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