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Chemical for Mining Industrial stage 2

September 4, 2011 | In: appraisal appraiser, property

Chemical for Mining Industrial stage 2; Thiourea (“Thiocarbamide” or “Sulfourea”) is the diamide of thiocarbonic acid that resembles urea but contains sulfur instead of oxygen. Thiourea is the main raw material of producing thiourea dioxide, which presents a white sheen slice, pillar or needle form shining crystallize body. It can dissolves in cold water, ammonium sulfur prussic acid and alcohol, also easily dissolves in hot water, but hardly dissolves in aether. Thiourea is a fine chemicals product with high additive value, which is widely applied in various industries such as medicine, agriculture, textile, printing-dyeing, chemical, metal-mine-selecting, laundering etc. It mainly uses in pharmaceutical raw material, bleaching agent in textile dyeing and printing, auxiliary of dyeing and anti-oxidant, and it can be used as rubber accelerator, floating agent, photo developing agent, prexide thiourea, cold wave etc. It is also used in resin compression molding powder electroplating blue printing and boiler washing. In macromolecules material industry, it is used as catalysis agent and stabilizer of resinic producing, and it is also used in organic synthesize of sensitizing material, and medicine, medical, spicery materials in fine chemicals, applied in the recycling and separating of heavy metals and also applied in gold extraction.

Hydrochloric Acid: Hydrochloric acid is the solution of hydrogen chloride in water. It is a highly corrosive, strong mineral acid and has major industrial uses. It is found naturally in gastric acid. Historically called muriatic acid or spirits of salt, hydrochloric acid was produced from vitriol and common salt. Hydrochloric acid is a strong inorganic acid that is used in many industrial processes. The application often determines the required product quality. One of the most important applications of hydrochloric acid is in the pickling of steel, to remove rust or iron oxide scale from iron or steel before subsequent processing, such as extrusion, rolling, galvanizing, and other techniques. Another major use of hydrochloric acid is in the production of organic compounds such as vinyl chloride for PVC. This is often captive use, consuming locally produced hydrochloric acid that never actually reaches the open market. Other organic compounds produced with hydrochloric acid include bisphenol A for polycarbonate, activated carbon, and ascorbic acid, as well as numerous pharmaceutical products.

Nitric Acid: Nitric acid, also known as aqua Fortis and spirit of nitre, is a highly corrosive and toxic strong acid that can cause severe burns. Colorless when pure, older samples tend to acquire a yellow cast due to the accumulation of oxides of nitrogen. If the solution contains more than 86% nitric acid, it is referred to as fuming nitric acid. Fuming nitric acid is characterized as white fuming nitric acid and red fuming nitric acid, depending on the amount of nitrogen dioxide present


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