Special High Grade (SHG) zinc is a term used to describe a particular grade of refined zinc metal. Zinc is commonly obtained from its ore, zinc blende (sphalerite), through a process called zinc smelting. After the smelting process, the zinc is further refined to meet specific quality standards, and SHG zinc is one of the highest-purity grades available.
SHG zinc is typically defined by its high purity level, which means it has a very low content of impurities, such as lead, cadmium, and iron. The exact specifications for SHG zinc can vary by region and industry standards, but it generally contains more than 99.99% pure zinc. This high level of purity is essential in applications where the presence of impurities could be detrimental, such as in the production of galvanized steel, the manufacturing of zinc alloys, and the chemical industry.
SHG zinc is an important material in various industries due to its corrosion resistance, malleability, and electrical conductivity. It’s commonly used for coating steel to prevent corrosion (galvanization), in the production of brass and bronze alloys, in the manufacture of batteries, and in various chemical processes.