electroslag welding esw is a highly productive, single pass welding process for thick greater than 25 mm up to about 300 mm materials in a vertical or close to vertical position. esw is similar to electrogas welding, but the main difference is the arc starts in a different location.an electric arc is initially struck by wire that is fed into the desired weld location and then flux is added.
a slug catcher is a vessel with sufficient buffer volume to store the largest slugs expected from the upstream system. the slug catcher is located between the outlet of the pipeline and the processing equipment. the buffered liquids can be drained to the processing equipment at a much slower rate to prevent overloading the system. as slugs are .
converting is a type of metallurgical smelting that includes several processes; the most commercially important form is the treatment of molten metal sulfides to produce crude metal and slag, as in the case of copper and nickel converting. a now-uncommon form is batch treatment of pig iron to produce steel by the bessemer process. the vessel used was called the bessemer converter.
with numerous remains of the equipment for iron processing grinders, furnaces, charcoal piles , iron ore itself and high quantities of discovered slag, dated from the 14th to the 11th century, indicates that this was the oldest known occurrence of ferrous metallurgy in europe and one of the oldest in the world. a nicely preserved needle .
welding slag is a form of slag, or vitreous material produced as a byproduct of some arc welding processes, most specifically shielded metal arc welding also known as stick welding , submerged arc welding, and flux-cored arc welding.slag is formed when flux, the solid shielding material used in the welding process, melts in or on top of the weld zone.
thus, the two factors that most affect the loss of copper to slag in the smelting stage are: matte grade; mass of slag. this means that there is a practical limit on how high the matte grade can be if the loss of copper to slag is to be minimized. therefore, further stages of processing converting and fire refining are required.
plasma gasification is an extreme thermal process using plasma which converts organic matter into a syngas synthesis gas which is primarily made up of hydrogen and carbon monoxide. a plasma torch powered by an electric arc is used to ionize gas and catalyze organic matter into syngas, with slag remaining as a byproduct.