Reprint：Parameters of 50T Steelmaking Electric Arc Furnace

Blog content reproduced from HANI Metallurgy《 50T Steelmaking Electric Arc Furnace 》

Description

50T steelmaking electric arc furnace: The electric arc furnace body is in the shape of a teapot, which is a steelmaking reaction vessel.

The furnace body consists of a furnace body and a furnace cover (furnace top).

The outer shell of the furnace body is made of steel plate, and the inside is the furnace lining.

The furnace wall is built with magnesia brick (MgO) or chrome magnesia brick (Cr2O3, MgO).

The bottom of the furnace is in the shape of a basin, and there is a layer of magnesia burning (playing) on the clay bricks and magnesia bricks.

The acid furnace lining is built with quartz brick (SiO2) and quartz sand.

In addition to the basic requirements of strength, high temperature resistance and heat insulation, the furnace lining refractory material is also required to withstand chemical erosion of slag, thermal shock of repeated rapid changes in furnace temperature, and collision between furnace blocks and operating machinery.

Features

Use

This steelmaking electric arc furnace adopts alkaline lining, and can melt carbon steel, high-quality carbon steel, alloy steel, stainless steel and other varieties.

Structural Features:

50t steelmaking electric arc furnace, the structure adopts the furnace cover to remove the top charging, (EBT) or tapping nozzle, and the right or left operation is selected by the user.

Electrode lifting, furnace body tilting, furnace cover lifting and rotation are all hydraulic.

The control adopts PLC intelligent regulator control.

1. The use environment of electric arc furnace equipment

▲The altitude does not exceed 2000m;

▲Ambient temperature: within the range of 0~40°C;

▲The daily maximum and the monthly average of the humidity in the wettest month in the area of use is less than 90%;

▲There is no conductive dust, explosive gas and corrosive gas that can seriously lose metal and insulation around;

▲ Obvious vibration and bumps.

2. Smelting Cycle

冶炼周期  Smelting Cycle	~160min ( Tapping~Tapping )
通电时间  Power-on Time	~140min (20℃~1600℃) Oxygen Blowing Volume  40m³/t Molten Steel
辅助时间  Auxiliary Time	20 min
加料（二次）  Feeding (Secondary)	8 min
出钢  Tapping	3 min
维修及出钢口填料  Repair & Tap Packing	3 min
其它辅助时间  Other Auxiliary Time	6 min

Parameters

Main Parameters of 50T Steelmarking Electric Arc Furnace Equipment

公称容量  Nominal Capacity	50t
平均出钢量  Average Tapping	55t (6-9t steel retention)
最大出钢量  Maximum Tapping	60t
炉壳内径  Inner Diameter of Furnace Shell	5200mm
操作形式  Operation Form	Left Operation or Right Operation
变压器额定容量  Transformer Rated Capacity	28MVA
变压器一次电压  Transformer Primary Voltage	35KV
频率  Frequency	50Hz
变压器二次电压  Transformer Secondary Voltage	436-380-184V
	436-380V
	380-184V
调压方式  Voltage Regulation	Class 19    Electric On-load Voltage Regulation
变压器二次额定电流  Transformer Secondary Rated Current	42.543KA
变压器冷却形式  Transformer Cooling Form	Strong Oil Circulating Water Cooling
三相阻抗不平衡系数  Three-phase Impedance Unbalance Factor	≤5%
石墨电极直径  Graphite Electrode Diameter	500mm （High Power Graphite Electrodes）
电极分布圆直径  Electrode Distribution Circle Diameter	1150±50mm
导电横臂  Conductive Cross Arm	Copper-steel Composite Conductive Cross Arm, Large-section Water-cooled Cable
电极上升速度  Electrode Rising Speed	6m/min（Automatic）  9m/min（Manual）
电极下降速度  Electrode Descending Speed	4m/min（Automatic）  6m/min（Manual）
电极升降最大行程  Electrode Lift Maximum Stroke	3800mm
倾炉角度  Tilt Angle	Eccentric Bottom Tapping 20°, normal 12~15
	Maximum Angle of Slag Discharge is 15°
出钢方式  Tapping Method	Eccentric Bottom
炉盖提升高度  Furnace Cover Lift Height	500mm
炉盖旋转角度  Furnace Cover Rotation Angle	~70°
出渣门尺寸（宽 X 高）  Slag Door Dimensions (W X H)	1100 X 900mm
钢包  Ladle	50t ~ 70t
液压系统工作压力  Hydraulic System Working Pressure	12MPa
液压介质  Hydraulic Medium	Water—Ethylene Glycol
电极升降控制方式  Electrode Lift Control Method	Electro-hydraulic Proportional Valve (Import)
系统过滤精度  System Filtration Precision	＜10μ （Level 4）
冷却水出水温度  Cooling Water Outlet Temperature	≤55℃
冷却水进水温度  Cooling Water Inlet Temperature	≤35℃
冷却水耗量  Cooling Water Consumption	~850m³/h

The scope of supply of complete sets of equipment is matched according to your actual requirements.

E-mail: saleswn@hanrm.com ( Daisy )