Zinc with a zinc content of approximately 99.5% is fused into liquid in a reactor with the liquid silicon tetrachloride, followed by the addition of hydrochloric acid to embed the chloride ion into zinc.
Evaporation is conducted by supplying inert gas such as nitrogen or argon with greater than 98% purity and heating toward the reactor is applied to remove excess hydrochloric acid. The nitrogen or argon supplies are stopped when the reactor is no longer showing acidity signs. In this process, zinc chloride is still existed in a steam form.
To obtain the solid zinc chloride or zinc powder, the heating is stopped and zinc chloride steam is passed to the solid collector and simultaneously being cooled or deposited in the solid collector system until the zinc powder is obtained due to decreasing temperature.