Iron yellow is widely used in industries such as building coatings, rubber, plastics, cultural and educational supplies. The price of iron yellow is about per ton. The production process of iron yellow is that sulfuric acid reacts with iron filings to generate ferrous sulfate, sodium hydroxide is added and air is oxidized to prepare crystal nuclei, and then added to the crystal nucleus suspension. Ferrous sulfate and iron filings are oxidized by heating and blowing air, then filtered, rinsed, dried and crushed to obtain iron oxide yellow. Usually, the cost of making iron yellow is too high. After years of research, Xi'an Environmental Science and Technology Company has successfully developed equipment for making iron yellow from ferrous sulfate. The equipment uses the wastewater generated by steel pickling and the ferrous sulfate contained in the wastewater to make crude iron yellow. This equipment solves the problem of waste acid treatment in enterprises, because pickling wastewater treatment is a difficult problem faced by many enterprises. It not only has high treatment costs, but also easily causes environmental pollution. This equipment also brings economic benefits to the enterprise. It uses ferrous sulfate to prepare crude iron yellow products. The price of the crude iron yellow products is about per ton. It is sold to iron yellow production plants and brings economic benefits. It can be said that it kills two birds with one stone and is a technological revolution. . For detailed consultation:
New economic growth point - pickling wastewater yellow iron making equipment