Industrial production method Preparation method of a sulfuric acid production of raw materials are sulfur, pyrite, non-ferrous metal smelting smoke, gypsum, hydrogen sulfide, sulfur dioxide and sulfuric acid and other waste. Sulfur, pyrite and smelt smoke are three main ingredients. Method two applications for industrial use Metallurgy and Petroleum industry for metallurgical industry and metal processing industry in the metallurgical sector, especially non-ferrous metal production process requires the use of sulfuric acid. Such as electrolysis refined copper, zinc, cadmium, nickel, need to use sulfuric acid electrolyte, some precious metals refining, sulfuric acid to dissolve the need to inclusion of other metals. Before cold rolling, drawing and stamping in the steel industry, iron steel surface must be removed with sulfuric acid. In rolled sheet, cold drawn seamless, and other high quality steel, must roll once every once washed sulfuric acid. Also before the hydrochloric acid, pipe joints, thin metal, galvanized wire and other conducting, to go through with sulfuric acid. In some metal machining process, such as nickel, chrome and other metal parts, also need to use sulfuric acid to wash rust surface. In ferrous metallurgy enterprise sector, the need pickling steel is generally about 5% to 6% of steel production, and a tonne of steel pickling, about 98% of the sulfuric acid consumption of 30 ~ 50kg. Toxicological properties of sulfuric acid is moderately toxic. Acute toxicity: LD502140mg / kg (rat oral); LC50510mg / m3,2 hours (rat inhalation); 320mg / m3 Zhengzhou hydrochloric acid, 2 hours (mouse inhalation) laboratory risk sulfate (state, especially in high concentrations under) can cause great harm to the flesh. Like other corrosive as acid and alkali, sulfuric acid can occur quickly with proteins and fat hydrolysis of amide and ester hydrolysis, thereby decomposing biological tissue, causing chemical burns. However, its flesh is also highly corrosive and its strong dehydration, since the sulfuric acid also carbohydrates and biological tissue dehydration reaction and release a lot of heat. In addition to causing chemical burns, it will also cause two flame burns. Therefore, the damage caused by the sulfuric acid, other than a lot of time to compare the strong acid (such as hydrochloric acid and nitric acid) is large. If you accidentally make eye contact sulfuric acid, then it is possible to cause permanent blindness; and if accidentally swallowed, is composed of body organs irreversible damage, even fatal. Concentrated sulfuric acid also has a strong oxidation, corrosion of most metals, it needs careful storage. Old textbooks that the hydrochloric acid, concentrated sulfuric acid in order to avoid contact with water after the release of a large amount of heat, and further damage the skin, use a dry cloth to wipe the re-processing of concentrated sulfuric acid on the skin. However, in practice, as other corrosive substances, the first time with plenty of water at least 10 to 15 minutes is the effective way to use hydrochloric acid, large amounts of water can be rapidly cooled damaged tissue and remove heat. Because of concentrated sulfuric acid would quickly charring the skin with a dry cloth might have damaged skin After contact with skin abrasions or even erased. And if accidentally spilled sulfuric acid protective clothing, should immediately take off, and thoroughly wash skin related parts. Zhengzhou Longda Chemical hydrochloride _ _ hydrochloric acid provided by the Zhengzhou Longda Chemical Products Limited. Zhengzhou Longda Chemical Products Co., Ltd. (www.longdahuagong.com/) adhere to the "people-oriented" business philosophy, with a professional staff, and strive to provide the best products and services to contribute to society, and to welcome new and old customers to visit us sincere cooperation for a better future. Zhengzhou Longda Chemical - your trusted friend, Address: High-tech District, Zhengzhou City, Henan Province Chemical Road 99 (Chemical Road and Rita Road intersection 100 meters south west), Contact: Manager Xu.