Jul. 23, 2025
DC submerged arc furnaces are commonly used for smelting iron alloys, and DC electric arc furnaces are mostly used in steelmaking.
DC submerged arc furnace electrode is generally self-baking electrode, and graphite electrode is commonly used for DC arc furnace. The structure of DC submerged arc furnace is relatively simple, and the structure of DC arc furnace is more complex. The service life of DC submerged arc furnace lining is about 2-5 years, and that of DC arc furnace lining is about 3-8 years. DC power supply is adopted for DC submerged arc furnace, and DC electric arc furnace is also DC power supply. Charge heating of DC submerged arc furnace generates heat by current through charge resistance, and DC electric arc furnace generates heat by electric arc between electrode and charge. The thermal efficiency of DC submerged arc furnace can reach 80% - 90%, and the thermal efficiency of DC arc furnace is 70% - 85%. The smelting temperature of DC submerged arc furnace can reach about 1600 ℃, and the smelting temperature of DC arc furnace can reach above 1700 ℃. The electrode consumption of DC submerged arc furnace is relatively large, while that of DC arc furnace is relatively small.
Grain size requirements of DC submerged arc furnace are relatively loose, and grain size requirements of DC electric arc furnace are strict. Small fluctuation range of charging capacity of DC submerged arc furnace and high flexibility of charging capacity of DC electric arc furnace. The electrode of DC submerged arc furnace is deeply inserted into the furnace charge, and the electrode of DC electric arc furnace is above the furnace charge. The reaction in DC submerged arc furnace is stable, and the reaction in DC arc furnace is fierce. DC submerged arc furnace body has high sealing requirements, and DC arc furnace body has low sealing requirements. The equipment investment of DC submerged arc furnace is relatively low, and the equipment investment of DC arc furnace is relatively high. DC submerged arc furnace covers a small area, and DC arc furnace covers a large area. DC submerged arc furnace operation is relatively simple, and DC arc furnace operation is more complex. DC submerged arc furnace has strong adaptability to raw materials, and DC electric arc furnace has high requirements on raw material purity. The automation degree of DC submerged arc furnace is low, and the automation degree of DC arc furnace is high.
Generally, the production scale of DC submerged arc furnace is small, while that of DC arc furnace is large. The product quality stability of DC submerged arc furnace is general, and the product quality stability of DC arc furnace is good.
The production process noise of submerged arc furnace is large, and the production noise of DC arc furnace is small. High dust content in DC submerged arc furnace gas and low dust content in DC arc furnace gas. Most DC submerged arc furnace linings are made of refractory bricks, and DC arc furnace linings are made of various materials. Short maintenance period of DC submerged arc furnace lining and long maintenance period of DC arc furnace lining. Low electrode regulation frequency of DC submerged arc furnace and high electrode regulation frequency of DC arc furnace. The pressure in DC submerged arc furnace is relatively stable, and the pressure in DC arc furnace fluctuates greatly. The smelting time of DC submerged arc furnace is relatively long, and the smelting time of DC electric arc furnace is relatively short. DC submerged arc furnace has high energy utilization rate and DC arc furnace has medium energy utilization rate.
DC submerged arc furnace has relatively more heat dissipation than DC arc furnace. High replacement frequency of DC submerged arc furnace electrode and low replacement frequency of DC arc furnace electrode. DC submerged arc furnace has low requirements on power supply system and DC arc furnace has high requirements on power supply. Slow melting speed of DC submerged arc furnace charge and fast melting speed of DC electric arc furnace charge. Weak oxidation of reaction atmosphere in DC submerged arc furnace and strong oxidation in DC arc furnace. The liner erosion of DC submerged arc furnace is relatively uniform, and the local erosion of DC arc furnace liner is serious. Low maintenance difficulty of DC submerged arc furnace equipment and high maintenance difficulty of DC arc furnace equipment. The heat loss of DC submerged arc furnace is mainly in the furnace body, and the heat loss of DC arc furnace is in the furnace gas. Charge preheating mode of DC submerged arc furnace is simple, and DC arc furnace has multiple preheating modes. The structure of DC submerged arc furnace is compact and the structure of DC arc furnace is loose. DC submerged arc furnace lining is frequently repaired, and DC arc furnace lining is rarely repaired.
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The 5 ton electric arc furnace for steel-making is a special purpose equipment that makes ordinary steel, quality carbon steel, alloy steel and non-corrosive steel with electric arc as heat source and scrap steel (iron) as raw material.
15-ton electric arc furnace is used for the short-process steelmaking process, using 100% scrap steel or scrap steel + molten iron (pig iron), or scrap steel + sponge iron (DRI) as raw materials for steelmaking.
The 30-ton AC electric arc furnace is used to melt scrap steel to produce steel. Electrical energy is used to melt scrap steel. An arc forms between the charged material and the electrode.
30 Ton electric arc furnace is used for steelmaking short process smelting, using 100% scrap steel or scrap steel + molten iron (pig iron), or scrap steel + sponge iron (DRI) as raw materials for steelmaking.
The 50-ton ultra-high power electric arc furnace (50TUPH EAF) adopts ultra-high power, high impedance technology, bottom tapping technology (ETB), furnace wall oxygen oil burner and furnace door carbon-oxygen gun technology.
DC electric arc furnace is an electric arc furnace supplying electric energy with DC power supply. There is only one electrode on the top of the DC arc furnace, which is the negative electrode, and the bottom electrode is the positive electrode.
Electric arc furnaces are used to melt scrap steel for steel production. Electrical energy is used to melt scrap steel. An arc forms between the charged material and the electrode. The heat generated by the arc melts the scrap.
Electric arc furnace steel making is a steelmaking method that uses the thermal effect of electric arc to heat the charge for melting.
Ultra-high power electric arc furnace mainly changes the arc characteristics of high voltage and long arc to the arc characteristics of high current, low voltage and short arc
1 ton electric arc furnace is used for melting steel and titanium scrap metal. The principle of electric arc furnace is based on the generation of direct current, which converts electrical energy into heat energy through electrodes to melt the metal.
The closed pig iron furnace (submerged arc furnace iron making) is a non-blast furnace iron making method. Under the premise of guaranteeing the power supply, it is easy to solve the problem by using the reducing agent required by the submerged arc furnace iron making.
The main mechanical device design of Sanui ferroalloy refining furnace combines China's national conditions and draws on international advanced technologies such as Demark and Pyremate.
The Ferronickel submerged arc furnace is a special submerged arc furnace used for smelting nickel-iron alloy. Its main function is to add nickel ore, carbonaceous reducing agent (such as coke) and limestone and other raw materials into the furnace in a certain proportion
The main mechanical device design of Sanui ferrosilicon furnace combines China's national conditions and draws on international advanced technologies such as Demark and Pyremate.
The main mechanical device design of Sanui high carbon ferrochrome furnace combines China's national conditions and draws on international advanced technologies such as Demark and Pyremate.
Industrial silicon submerged arc furnace is an important equipment in silicon ore processing, playing a key role in the silicon industry.
The manganese silicon alloy furnace is mainly used to smelt silicon-manganese alloy, which is an alloy containing silicon and manganese.
The design of the submerged arc furnace main mechanical device by Sanui is based on China's national conditions and draws on international advanced technologies such as Demark and Perlmutter.
Submerged electric arc furnace is mainly used for reducing and smelting raw materials such as ore, carbonaceous reducing agent and solvent. It mainly produces ferroalloys such as ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, silicon-manganese alloy, etc.
Titanium slag production adopts titanium slag electric furnace (circular furnace and rectangular furnace according to its shape) smelting process.
The LF 20 T ladle refining furnace has the functions of arc heating under normal pressure, argon blowing and stirring at the bottom of the ladle, and reducing slag making in the ladle.
LF ladle refining furnace is a bottom-blown argon ladle furnace with three-phase submerged arc heating under normal pressure. It is a device for refining molten steel in a ladle.
VD vacuum refining furnace is a commonly used refining process equipment, mainly used for deoxidation, impurity removal and other operations of molten steel, so as to obtain high purity, low impurity content of high quality steel.
VOD vacuum refining furnace has multiple functions such as vacuum degassing, oxygen blowing decarburization, vacuum charging, argon blowing stirring, non-vacuum temperature measurement sampling, wire feeding, etc.
The cast steel melting induction furnace has outstanding advantages in heat penetration or melting soft magnetic alloys, high resistance alloys, platinum group alloys, heat-resistant, corrosion-resistant, wear-resistant alloys and pure metals.
Metal silicon smelting furnace is a metal silicon medium frequency melting furnace, which consists of furnace body, water and electricity introduction system, furnace tilting device, etc. It has fast melting temperature rise, easy to control furnace temperature and high production efficiency.
Medium frequency induction furnace mainly used for melting steel, alloy steel, special steel, stainless steel, and can also be used for melting and casting non-ferrous metals such as copper, aluminum, lead, zinc, etc. The customized range of induction furnaces sold by Sanrui ranges from 0.1 tons to 10 tons.
Medium frequency induction furnaces are mainly used for melting steel, alloy steel, special steel, stainless steel, and can also be used for melting and casting non-ferrous metals such as copper, aluminum, lead, and zinc.
Medium frequency aluminum melting furnace is used for melting and heating aluminum, scrap aluminum, aluminum ingots, and aluminum alloys; The melting capacity ranges from 100KG to 3000KG.
An induction furnace is an electric furnace that uses the induction electrothermal effect of the material to heat or melt the material. The main components of an induction furnace are sensors, furnace body, power supply, capacitors and control system.
The 3-ton medium frequency coreless induction furnace adopts a 6-phase 12-pulse double rectifier control system. A 2000KVA special rectifier transformer is used for the 2000KW medium frequency power supply.
The conductive arm of an electric arc furnace (EAF) is primarily composed of the front electrode conductive arm holder, a water-cooled clamping ring, the arm body, and the rear conductive copper plate.
The scrap charging basket of the electric arc furnace is mainly used for loading and conveying raw materials such as scrap steel into the electric arc furnace for smelting.
There are many insulation links between the EAF electrode holder and the conductive cross arm body, which greatly simplifies the cconductive cross arm structure and is a new type of electrode arm on the ultra-high power arc furnace.
Generally, the furnace cover of the electric arc furnace adopts the tubular water-cooled closed tube furnace cover structure.
The electrode lifting mechanism of electric arc furnace is composed of conductive cross arm and electrode column device.
Forged copper tile is one of the main accessories in submerged arc furnace (silicon metal furnace, calcium carbide furnace and iron alloy furnace). It generates heat energy due to passing through large current at high temperature, and is easy to be damaged due to poor working environment.
The furnace cover lifting and rotating device consists of a furnace cover lifting mechanism, a rotating mechanism and a rotating frame.
Submerged arc furnace pressure ring is used to monitor the change of air pressure in the furnace in real time, and adjust the air pressure automatically or manually according to the preset parameters to ensure the stability of air pressure in the furnace
Submerged arc furnace water-cooled Roof is an important part of submerged arc furnace (also known as electric arc furnace, calcium carbide furnace or mining furnace), which is mainly used to close the top of furnace body and bear the high temperature and pressure in the furnace.
Short network bus systems), also known as high current line, refers to the general term of the carrier fluid from the secondary outlet terminal of the transformer to the electrode (including the electrode).
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