设计总说明：通过阅读电弧炉车间设备有关书籍。最后，电弧炉和电炉的平面图，负载的计算，包括总结本产品，电炉，炉炼，连铸示范开发，选择合适的设备，完成最后的车间设计。这次设计中，我们将生产的主要钢的品种是轴承钢，还有少部分的碳素钢，合金结构钢，冷镦钢和碳素工具钢，这次设计中将会用到的一些设备，我们会使用的电弧炉为炉底偏心新型的超高功率电弧炉，数量是一台，此电炉额定容量为95t，电炉的变压器容量为70MVA，最大出钢量为120t，那么可以看出留钢量为20t，每炉的冶炼周期为51分钟，电炉炉壳的直径为6230mm，使用的电极的直径为600mm，电极心圆直径为1570mm，电极的行程为4200mm，电炉的出钢倾斜角度为8~10度，炉盖旋转的角度为70度，旋转的时间6~8秒，提升的时间为4秒，提升的行程有600mm，炉子的倾动方式是液压式的。精炼部分我们这次使用的LF精炼炉，数目是一台，喂丝机器数量也是一台，LF钢包炉变压器的容量为14MVA，精炼周期为39分钟，精炼炉的容量为80t，每台每日产出的钢水量为2100t，有效工作天数为320天，那么年产量为71.9万吨，作业率为87.7%，电极的直径有400mm，钢包内称直径2841mm，钢包的高度3846mm，净空高度为800mm，升温的速度为4~5度每分钟。设备工艺部分确定之后我们需要确定下用料方面，金属料我们会用到Q235废钢724.24kg/t，铁水会用310.39kg/t，铁合金材料其中的硅铁4.39kg/t，锰铁3.31kg/t，铬铁18.71kg/t，还有其他的一些材料，比如石灰6.21kg/t，碳粉4.73kg/t，白云石6.21kg/t，电极2.07kg/t，耐火材料2.59kg/t。

关键字：电弧炉车间；工艺设计；中厚板坯；LF精炼炉

Process Design of 500,000 Tons of Medium Thick Slabs Arc Furnace Workshop with Annual Output

General description of the design: By reading the books about the electric arc furnace workshop equipment. Finally, the plan of the electric arc furnace and the electric furnace, the calculation of the load, including the summary of this product, electric furnace, furnace refining, continuous casting demonstration development, the selection of suitable equipment, and the final workshop design. In this design, the main types of steel that we will produce are bearing steels, as well as a small part of carbon steel, alloy structural steel, cold crucible steel and carbon tool steel. Some equipment will be used in this design. The electric arc furnace we will use is a new type of ultra-high power electric arc furnace with eccentric bottom. The number is one, the rated capacity of this electric furnace is 95t, the capacity of the electric furnace's transformer is 70MVA, and the maximum tapping amount is 120t, then we can see that The amount of steel is 20t, the smelting cycle per furnace is 51 minutes, the diameter of the furnace shell is 6230mm, the diameter of the electrode used is 600mm, the diameter of the electrode core is 1570mm, the stroke of the electrode is 4200mm, the tapping angle of the electric furnace is 8 to 10 degrees, the furnace cover rotates at an angle of 70 degrees, the rotation time is 6 to 8 seconds, the lifting time is 4 seconds, the lift stroke is 600mm, and the furnace tilting mode is hydraulic. Refining part The number of LF refining furnaces we use this time is one. The number of feeding machines is also one. The capacity of the LF ladle furnace transformer is 14 MVA, the refining cycle is 39 minutes, and the refining furnace capacity is 80 tons, each daily. The output of molten steel is 2100t, the effective working days is 320 days, then the annual output is 719,000 tons, the working rate is 87.7%, the diameter of the electrode is 400mm, the diameter of the ladle is 2841mm, the height of the ladle is 3846mm, the clearance height is 800mm The rate of warming is 4 to 5 degrees per minute. After the equipment part of the equipment is determined, we need to determine the following materials. We will use Q235 steel scrap 724.24kg/t, hot metal 310.39kg/t, ferro-alloy material ferrosilicon 4.39kg/t, ferromanganese 3.31kg/ t, ferrochromium 18.71kg/t, there are other materials, such as lime 6.21kg/t, carbon powder 4.73kg/t, dolomite 6.21kg/t, electrode 2.07kg/t, refractory 2.59kg/t.