DRL-8A1-type electric arc furnace

First, the function of the electric arc furnace for burning a sample, suitable for rapid combustion steel, ore, coal, slag, copper alloy samples, without heating. The electric arc furnace using a variety of methods can be used with conductivity method, non-aqueous titration, gas volume method, iodimetry, acid-base titration analytical instruments such as supporting the use of quantitative analysis for carbon, sulfur percentage of the sample. Second, the technical parameters Power supply voltage: AC 220V ± 10% Power frequency: 50Hz ± 10% using current: 2-15A arc when the electrode and the sample spacing :( arc distance) 4-8 mm, enter the oxygen pressure: 0.02 0.06 MPa (referring to the bomb or the oxygen valve pilot pressure) outputs the control flow: 80-120 l / h sample burning time: 5 seconds arc time: 0.2-0.5s Weight: 20kg Third, the operation will Under EAF power lines, intake, outlet conduit respectively specified power supply, low oxygen and test equipment connected after confirming safe and reliable source of oxygen, and electric arc furnace crucible base housing uncharged case, you can follow the steps below Operation: 1, the samples have been weighed and poured into the copper crucible additives, clamp onto the crucible with crucible placed in a crucible seat shift. 2, the "handle" pull down turn, make crucible seat rises, the lower flange along the surface of the crucible furnace ring seal. 3, the "Power" pull the switch, turn on the power. Open warm-up switch preheating furnace, continuous analysis can be switched off. 4, will have "pre-oxygen" "after control" two pull switch, make oxygen into the combustion system. 5, check, the need to adjust the flow rate of the flowmeter (typically 80 to 120 l / h). 6. Press the "arc" button to make the sample crucible arc burning. 7, after a sample test is completed, the first "pre-oxygen" close, wait and then close "after control" switch.