EAF-16500KVA Submerged Arc Furnace

EAF-16500KVA Submerged Arc Furnace

EAF-16500KVA Submerged Arc Furnace for Sale

Introduction to Submerged Arc Furnace: Submerged Arc Furnace is mainly used for reducing and smelting ore, carbonaceous reducing agents and solvents, and other raw materials. It mainly produces ferrosilicon, ferromanganese, ferrochromium, ferrotungsten, silicon-manganese alloy, and other ferroalloys, which are important industrial raw materials in the metallurgical industry and chemical raw materials such as calcium carbide.

Its working feature is to uses carbon or magnesia refractory materials as the furnace lining and use self-cultivating electrodes.

The electrode is inserted into the furnace material for submerged arc operation, using the energy and current of the arc to pass through the furnace material, and the energy generated by the resistance of the furnace material to smelt metal, feeding successively, intermittently tapping iron slag, an industrial electric furnace that operates continuously.

The main technical parameters of Submerged Arc Furnace

1. Main parameters of the Submerged Arc Furnacefurnace body

Shell diameter (mm) Φ8400

Shell height (mm) 4500

Furnace diameter (mm) Φ6800

Hearth depth (mm) 2600

Electrode diameter (mm) φ1200

Electrode distribution circle diameter (mm) 2900±50

Electrode travel (mm) 1200/ 2000

Electrode lifting speed (m/min) 0.5

Number of tapholes (pieces) 2/120º

Copper wattage per electrode (block/root) 6

Cooling water consumption 250t/h

2. Submerged arc furnace transformer

Transformer Model HKSSP-16500/110

Transformer power (kVA) 16500+20%

Primary voltage (kv) 110

Secondary voltage (V) 115~154~193 (115v~154v constant current

                                         154v~193v constant power)

Secondary rated voltage (V) 154

Secondary rated current (kA) 61.9

Short-circuit impedance <6% at 154V, internal impedance of the coil ≤5%

Wiring method △/△-12 six windings

Voltage regulation method Electric non-excitation voltage regulation

Cooling method OFWF forced oil circulation water cooling, YS1-200×2 water cooler

36 side outlet terminals (Φ65×10T2 copper tube) length 200mm

3. Short network electrical parameters

Conductive copper tube current density 3～4.5/mm2

        The contact current density between copper tile and electrode is 1.9～2.5A/cm2

The current density of the water-cooled cable is 3～4.5A/mm2

Short net imbalance < 10%

Electrode allowable current density 6.1A/cm2

4. Main parameters of the electrode shaft system

Lift cylinder diameter (mm) 200

Piston working stroke (mm) 1200

Overhaul stroke (mm) 2000

Lifting speed (m/min) 0.5

Working pressure (Mpa) 8～12

Copper wattage (a) 6

Brake mode Airbag double brake

Pressure release cylinder stroke (mm) 100

Working pressure (Mpa) 7

Tight copper tile method Piston pressure ring

Cylinder diameter (mm) 125

Cylinder stroke (mm) 50

Working pressure (Mpa) 2.5～5

5. Hood

Hood height (mm) 2000

Hood diameter (mm) 8200

Chimney diameter (mm) 1600

Number of chimneys (pieces) 2

6. Hydraulic station

Gear pump working pressure (Mpa) 16

Hydraulic medium Anti-wear hydraulic oil N46

7. Cooling water requirements

Water volume: m3/h. Taiwan 250

Pressure MPa ≥0.3

Cooling water quality PH 6~8

Total hardness <10mg/L(Cao)

Suspended solid <10mg/L

Inlet water temperature <32℃

3. Complete range

1 mechanical part

1.1 furnace body

Furnace shell (including I-beam) 1 set

Furnace lining 1 set

1.2 Smoke exhaust system

Smoke hood 1 set

Chimney 2 sets

1.3 Handler

Hanging oil cylinder steel platform 1

3 handles

Protective set (all non-magnetic stainless steel) 3 pcs

3 pressure rings

3 sets of guide wheels, upper and lower supports of the oil cylinder, suspension, conductive copper pipes, fixed mounts, and airbag supports

3 sets of polar heart seal adjustment device (all non-magnetic stainless steel)

1.4 Short net

Compensation water cooling cable SL1600 mm 36pcs

Water cooling cable SL1600mm 36pcs

Copper tube Φ65×10T2 1 set

18 sets of forged copper tiles

Copper row 1 set

1.5 hydraulic system 1 set

1.6 Pneumatic system 1 set

1.7 Furnace front cooling water system 1 set

1.8 Batching and feeding system 1 set

1.9 step feeding and unloading system 1 set

1.20 tapping system 1 set

1.21 insulating piece 1 set

1.22 standard parts 1 set

2. Electrical equipment

2.1 Furnace low-voltage electrical system 1 set

2.2 High voltage electrical system 1 set

2.3 Loading and batching control system 1 set

2.4 Furnace transformer 1 set

Hani Tech is a Hot Rolling Mill manufacturing company working mainly in the area of the bar and wire rod mills, high-speed wire rod mills, high-speed rebar rolling mills, TMT rolling mills, flying shear, cold strip rolling mills, reheating furnaces, induction furnaces, intermediate frequency furnace, electric arc furnace, ladle refining furnace, blast furnace, continuous casting machine. 

Hani is the one-stop supplier able to design, manufacture, install and commission your hot rolling mill plant from A to Z.

Free send inquiries to stella@hanrm.com if any needs.

Email: stella@hanrm.com Or stellarollingmill@gmail.com

Whatsapp/Wechat:+8615877652925

Website:  https://www.hanrm.com

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Submerged Arc Furnace Nickel Pig Iron

Submerged Arc Furnace Nickel Pig Iron

Nickel pig iron in submerged arc furnaces can generally be divided into high-grade ferronickel (10 and above), medium-grade ferronickel (ranging from 4-9), and low-grade ferronickel according to the content of nickel pig iron. The smelting of nickel pig iron mainly uses submerged arc furnaces and blast furnaces. Generally, submerged arc furnaces produce high-grade ferronickel, and blast furnaces produce medium and low-grade ferronickel. Nickel pig iron is mainly used by steel mills (Baosteel, Pohang, etc.) to smelt stainless steel, such as 300 series and 200 series stainless steel.

The production process of ferronickel is also varied and complicated. According to the smelting equipment, it can be divided into the rotary kiln-electric furnace (RKEF), blast furnace, electric furnace, and other processes. At present, RKEF is the mainstream process for smelting laterite nickel ore.

The RKEF process, that is, the rotary kiln-submerged arc furnace process, has mature technology, simple and easy-to-control equipment, and high production efficiency. However, its disadvantages are that the smelting temperature (about 1500°C) is high, it needs to consume a lot of metallurgical coke and electric energy, the production cost is high, and there is dust pollution. Moreover, the grade of nickel contained in the ore has a great influence on the production cost of the pyrotechnic process. For every 0.1% reduction in the nickel grade of the ore, the production cost will increase by about 3-4%. This process is suitable for treating type A magnesia silicate laterite ore and type C1 and C2 intermediate laterite ore. And the Ni grade is >1.6%, preferably 1.8%, which is conducive to saving production costs.

The RKEF process flow is ore batching—rotary kiln drying—rotary kiln roasting—furnace smelting crude ferronickel—LF furnace refining (or mechanical stirring desulfurization)—refined ferronickel water quenching—outputting qualified ferronickel particles.

Fuan Dingxin Ferronickel Co., Ltd., invested in and constructed by Tsingshan Group, was the first company in China to adopt the RKEF process of producing ferronickel with a large rectangular submerged thermal electric furnace. Φ4.8×100m rotary kiln, four 33000KVA round submerged arc furnaces. So far, these two RKEF production lines have stable production, good indicators, and the lowest cost in China.

Hani Metallurgy is the one-stop supplier able to design, manufacture, install and commission your melt shop and hot rolling mill plant from A to Z.

Free send inquiries to stella@hanrm.com  or inquiry99@hanmetallurgy.com if any needs.

Email: stella@hanrm.com Or stellarollingmill@gmail.com                              inquiry99@hanmetallurgy.com

Whatsapp/Wechat:+8615877652925

Website:  https://www.hanmetallurgy.com/

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Submerged Arc Furnace Power Factor

Submerged Arc Furnace Power Factor

This paper relates to the field of reactive power compensation systems on the low-voltage side of the submerged arc furnace, especially the collection and control of the power factor of the submerged arc furnace in the reactive power compensator.

Power Factor Acquisition and Control System of Submerged Arc Furnace

The submerged arc furnace is an industrial electric furnace with huge power consumption. The structure and working characteristics of the submerged arc furnace determine that the transformer is mostly in the state of reactive power operation. A large amount of reactive power consumption on its short circuit and the resulting large operating voltage The drop is the main cause of low output and high power consumption.

The low-voltage and high-current characteristics of the short-circuit network determine that the short-circuit network will generate a large amount of reactive power, which will seriously occupy the load of the transformer and restrict the ability of the transformer to transmit active power, resulting in a low power factor of the submerged arc furnace transformer. Between 0.6 and 0.8, the low power factor not only reduces the efficiency of the transformer, but also produces a lot of useless work, and will also be charged an additional power penalty by the power department, which will increase the power imbalance between the three phases, resulting in low smelting efficiency. Increased power consumption; coupled with the fact that the length of the short network of the submerged arc furnace transformer is not equal, the three-phase power imbalance caused by smelting and the reactive power generated by the change of the smelting arc circulate on the submerged arc furnace transformer, short network, and power supply network. Exacerbated the reactive power loss of the whole submerged arc furnace.

In order to reduce the loss of the power grid and improve the quality of the power supply, the power supply bureau requires the power factor of the power consumption to be above 0.9, otherwise, the power consumer will be fined heavily. At the same time, the low power factor will also reduce the incoming line voltage of the submerged arc furnace and affect the smelting of calcium carbide.

Therefore, at present, large-capacity submerged arc furnaces at home and abroad must be equipped with reactive power compensation devices to improve the power factor of submerged arc furnaces.

Currently, three independent single-phase power factor meters are used for power factor acquisition and control, which are not controlled by the host computer because they cannot be integrated with the system. If manual compensation is required after stopping, parameters must be set on the compensator. Excessive technical requirements for operation, especially for on-site operators, are not conducive to flexible control. At the same time, the actual situation of the current input current and voltage data cannot be fed back.

Utility Model Content

The main purpose of the utility model is to provide a submerged arc furnace power factor acquisition control system, which aims to realize the automatic acquisition and control of the submerged arc furnace power factor acquisition control system, and at the same time perform real-time monitoring and feedback data in the submerged arc furnace.

The technical solution of the utility model is to provide a submerged arc furnace power factor acquisition control system, including a PLC controller, the PLC controller is connected with a power factor converter, a thyristor trigger module and a host computer, and the PLC controller is used to control the thyristor The trigger module performs capacitor switching compensation, receives data from the power factor converter, and uploads the data in the furnace to the host computer; the power factor converter is connected with a power acquisition module for collecting data in the submerged arc furnace.

Further, the power collection module acquires high-voltage side current and voltage data by using high-voltage CT/PT transformer transmission.

Further, the high-voltage side current and voltage data obtained by the power acquisition module are converted by a power factor converter and output to the PLC controller with a power factor.

Further, the PLC controller controls the thyristor trigger module to perform capacitor switching control according to the power factor output by the power factor converter.

Further, the PLC controller receives the power factor of the power factor converter and the switching feedback information of the thyristor trigger module and uploads the information to the host computer for monitoring.

Further, if the feedback data received by the host computer exceeds the set range, the host computer will send an alarm command to the PLC controller.

Further, it also includes an alarm module, the PLC controller is connected to the alarm module, and the PLC controller controls the alarm module to send an alarm signal after receiving the alarm command sent by the host computer.

The beneficial effects of the utility model are: the submerged arc furnace power factor acquisition control system realizes the automatic acquisition and control of the submerged arc furnace power factor acquisition control system, and at the same time performs real-time monitoring and feedback of data in the submerged arc furnace. In the process of input control without power compensation, the input power of the submerged arc furnace is stable, which fully makes up for the shortcomings of the traditional reactive power compensation system.

The submerged arc furnace power factor acquisition and control system solve the shortcomings of the traditional single submerged arc furnace power factor acquisition and control system. The automatic acquisition and control of the acquisition and control system, while performing real-time monitoring and feedback of data in the submerged arc furnace, at the same time ensure the stability of the input power of the submerged arc furnace during the input control process without power compensation, which fully compensates for the traditional no Insufficiency of the power compensation system.

Hani Metallurgy is the one-stop supplier able to design, manufacture, install and commission your melt shop and hot rolling mill plant from A to Z.

Free send inquiries to stella@hanrm.com  or inquiry99@hanmetallurgy.com if any needs.

Email: stella@hanrm.com Or stellarollingmill@gmail.com                              inquiry99@hanmetallurgy.com

Whatsapp/Wechat:+8615877652925

Website:  https://www.hanmetallurgy.com/

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Submerged Arc Melting Furnace Price

Submerged Arc Melting Furnace Price

The submerged arc melting furnaces' price on the market is generally divided into two types: DC submerged arc furnaces and AC submerged arc furnaces in terms of the current form. Each type of submerged arc furnace is divided into open arc furnace (submerged arc furnace is exposed outside the raw material, also called submerged arc furnace) and submerged arc furnace (submerged arc furnace is buried inside the raw material, also called submerged arc furnace).

The main equipment structure of the submerged arc furnace is divided into a furnace body, furnace cover, electrode system, short network system, water cooling system, iron tapping system, and hydraulic system.

1. The furnace body is a container for reduction reaction, which is composed of a furnace shell and furnace lining. The reduction reaction is carried out in the furnace body. According to different smelting products, carbonaceous furnace lining or magnesia furnace lining can be selected. Some smelting varieties such as industrial silicon and silicon calcium have a rotating mechanism at the bottom of the furnace body.

2. The furnace cover is a device for recovering flue gas and protecting the environment. It consists of the skeleton, cover plate, coaming plate, and furnace door. Since the environment is a high-temperature area, in order to prolong the life of the equipment, the skeleton, cover plate, and furnace door should be water-cooled, and the bottom of the cover plate should be protected by knotting material. The triangular frame and cover plate are made of stainless steel.

The furnace cover is divided into a short hood structure and a fully enclosed structure and can be designed as a fully enclosed structure for products that do not need to be smelted during smelting.

3. The electrode system is a device that converts electrical energy into thermal energy. According to the structure, it is divided into copper tile structure and combined controller structure. The copper tile structure consists of copper tile, pressure ring, protective sleeve, copper tube in the furnace, controller, Lift system, and brake release system. The structure of the combined holder is composed of a bottom ring, a contact element, a protective sleeve, a copper tube in the furnace, a holder, a lifting system, and an electrode pressing and releasing system.

The pressure ring of the copper tile structure can be selected from the cylinder-type pressure ring, the spring-type pressure ring, and the bellows-type pressure ring.

4. The short network is the equipment that transfers electric energy into the electrode system: including an electric furnace transformer, water-cooled compensator, short-network copper pipe, water-cooled cable, etc. Transformer optional single-phase transformer or three-phase transformer.

Hani Metallurgy sells submerged arc furnace products online and provides submerged arc furnace prices, submerged arc furnace supply, and submerged arc furnace manufacturers' information services. It is a professional one-stop shopping platform for Internet + submerged arc furnaces.

Hani Metallurgy is the one-stop supplier able to design, manufacture, install and commission your melt shop and hot rolling mill plant from A to Z.

Free send inquiries to stella@hanrm.com  or inquiry99@hanmetallurgy.com if any needs.

Email: stella@hanrm.com Or stellarollingmill@gmail.com                              inquiry99@hanmetallurgy.com

Whatsapp/Wechat:+8615877652925

Website:  https://www.hanmetallurgy.com/

                https://www.hanrm.com