We at M/s B.N.Concast pvt ltd are engaged in manufacturing and recycling of special purpose & special quality of Oils(lubricating oil, transformer oil, industrial oi) suiting various requirements of our valued customers. The main contaminants are listed below. Combustion products Water. Fuel burns to CO2 and H2O. For every litre of fuel burnt, a litre of water is created. This normally passes out
through the exhaust when the engine is hot, but when cold it can run down and collect in the oil. This leads to sludge formation and rust. These make the oil go black. They form as the result of incomplete combustion, especially during warm-up with a rich mixture. Lead. Tetraethyl lead, which used to be used as an anti-knock agent in petrol, passes into the oil. A typical used engine oil may have contained up to 2% lead, but today any lead comes from bearing wear and is likely to be in the 2 - 12 ppm range. Fuel. Unburnt gasoline or diesel can pass into the lubricant, again especially during start-up. Abrasives Road dust. This passes into the engine through the air-cleaner. Composed of small particles of silicates. Wear metals. Iron, copper and aluminium released due to normal engine wear. VII-Energy-B-Rerefining Used Oils-4 Chemical products Oxidation products. Some of the oil molecules, at elevated temperatures, will oxidise to form complex and corrosive organic acids.
