Product resulting from the reaction of some kind smelting slag are toxic, such as cadmium, zinc may be toxic waste. Copper ore roasting SO2 gas, zinc and antimony can be caused by ore with elemental sulfur as a component. Or velvet that impurities in coal used as fuel. Acid or sulfuric acid plant used dissolved minerals. Readily removed by reaction with Ca (OH) 2 and CaSO4, which is used to produce gypsum. Also while smelting the metal dust, runoff, which is very dangerous. Therefore, control and prevent pollution. By eliminating toxins out prior to release into the environment.
การแปล กรุณารอสักครู่..