Abstract
With the technological progress and market expansion, the production capacity
and output of hydrofluoric acid have been growing rapidly. By the end of 2008,
China' s actual annual production capacity of hydrofluoric acid hit more than
one million tons. However, hydrofluoric acid, especially high-purity and
high-performance products, is still in short supply, so China imports some
every year.
In 2008, the total output of hydrofluoric acid increased greatly to 679,000
tons, an increase of more than 12.7% compared with 2007. In 2003, the output
was 284,300 tons, so the output expanded by an annual increase of over 10%
from 2003 to 2008.
Hydrofluoric acid is not only the most important basic material for fluorine
chemical, but also the fluoride with the largest consumption. Besides, it is
the major downstream processed product of fluorite. It is used in the
manufacture of inorganic fluorine compounds, such as aluminum fluoride and
crystal stone, the purification of molybdenum, rare earth and graphite as well
as glass etching and metal cleaning; additionally, it is the main raw material
of fluorine. In the aspect of organic compounds, hydrofluoric acid acts as the
raw material of fluorine refrigerant and organic fluorine resin as well as the
catalyst of alkylation and hydrocarbons, besides, it is utilized in the
polymerization of alcohol and ethers, power polishing and eroded semiconductor
silicon cleaning (mixed with HNO3).
China' s demand for hydrofluoric acid in 2003 was about 382,000 tons, and the
figure in 2009 will be 917,000 tons. Growth in demand mainly arises from the
demand of downstream application fields.
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