Archives for June, 2021
Virtually all sulphur produced worldwide is used to make sulphuric acid, mostly produced by the Contact Process. In this process sulphur is burned in air, or ores like pyrite are heated in air, to produce sulphur dioxide. This is then converted to sulphur trioxide by heating in air to about…
Global zinc production in 2020 is estimated to be 12Mt, less than 2019 due to the COVID panic. The biggest producers were China, Peru and Australia. World zinc reserves are 250Mt and resources about 1.9Bt. Zinc has been known since Roman times but rarely used until recent times. The Chinese…