CN112880412B - Electrode parameter optimization method for closed calcium carbide furnace - Google Patents

Electrode parameter optimization method for closed calcium carbide furnace Download PDF

Info

Publication number
CN112880412B
CN112880412B CN202110085637.5A CN202110085637A CN112880412B CN 112880412 B CN112880412 B CN 112880412B CN 202110085637 A CN202110085637 A CN 202110085637A CN 112880412 B CN112880412 B CN 112880412B
Authority
CN
China
Prior art keywords
calcium carbide
carbide furnace
electrode
transformer
diameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110085637.5A
Other languages
Chinese (zh)
Other versions
CN112880412A (en
Inventor
梁乾毅
梁俊鸿
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202110085637.5A priority Critical patent/CN112880412B/en
Publication of CN112880412A publication Critical patent/CN112880412A/en
Application granted granted Critical
Publication of CN112880412B publication Critical patent/CN112880412B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/08—Heating by electric discharge, e.g. arc discharge
    • F27D11/10—Disposition of electrodes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

The invention discloses a method for optimizing electrode parameters of a closed calcium carbide furnace, which comprises the following steps: obtaining rated apparent power and average daily output parameters of a transformer of the calcium carbide furnace, and calculating dynamic apparent power of the transformer of the calcium carbide furnace; acquiring secondary phase voltage of a transformer of the calcium carbide furnace in a dynamic working state, and calculating the diameter of an electrode of the calcium carbide furnace by combining the dynamic apparent power of the transformer; and acquiring the potential gradient of the transformer of the calcium carbide furnace, and calculating the diameter of the electrode center circle of the calcium carbide furnace by combining the diameter of the electrode of the calcium carbide furnace. According to the invention, by optimizing the electrode parameters of the calcium carbide furnace, the ideal values of three dynamic parameters of the motion resistance, the current density and the potential gradient of the electrode of the calcium carbide furnace can be simultaneously operated at the same gear of the transformer, so that the calcium carbide furnace can realize high load, high yield and low power consumption in production, and the requirement range of the technical indexes of the main raw materials is wider.

Description

Electrode parameter optimization method for closed calcium carbide furnace
Technical Field
The invention relates to the technical field of diameter matching of a transformer and an electrode of a closed calcium carbide furnace, in particular to a parameter optimization method for the electrode of the closed calcium carbide furnace.
Background
At present, the size of the electrode diameter and the diameter of the pole center circle of a 25500 KVA-63000 KV combined holder closed calcium carbide furnace is mostly mechanically applied and is a technology introduced in the last century, and is a geometrical parameter of a ferroalloy furnace. The parameters can not meet the numerical values required by the electrode current density, the electrode movement resistance and the potential ladder required by the normal process for producing the calcium carbide. The main manifestations are that the electrode diameter and the pole center circle diameter are generally larger, resulting in smaller current density, larger movement resistance and smaller potential gradient. The embodiment of the small-horse cart ensures that the calcium carbide production can only run under the conditions of low load, low yield and high power consumption for a long time, thereby intangibly wasting a large amount of social resources and limited precious energy.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a method for optimizing electrode parameters of a closed calcium carbide furnace.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that:
a method for optimizing electrode parameters of a closed calcium carbide furnace comprises the following steps:
s1, obtaining rated apparent power and average daily output parameters of a transformer of a calcium carbide furnace, and calculating dynamic apparent power of the transformer of the calcium carbide furnace;
s2, obtaining secondary phase voltage of a transformer of the calcium carbide furnace in a dynamic working state, and calculating the diameter of an electrode of the calcium carbide furnace by combining the dynamic apparent power of the transformer obtained in the step S1;
and S3, acquiring the potential gradient of the transformer of the calcium carbide furnace, and calculating the diameter of the electrode center circle of the calcium carbide furnace by combining the diameter of the electrode of the calcium carbide furnace obtained in the step S2.
Further, the step S1 specifically includes the following sub-steps:
s11, obtaining rated apparent power and average daily output parameters of a transformer of the calcium carbide furnace, and calculating the daily output parameters of the calcium carbide furnace;
s12, calculating the dynamic active power of a transformer of the calcium carbide furnace according to the calcium carbide unit consumption of the calcium carbide furnace and the daily output parameters obtained in the step S11;
and S13, calculating the dynamic apparent power of the transformer of the calcium carbide furnace according to the natural power factor of the calcium carbide furnace and the dynamic active power of the transformer obtained in the step S12.
Further, the calculation formula of the transformer dynamic apparent power of the calcium carbide furnace in the step S13 is as follows:
Figure BDA0002910701970000021
wherein S represents the dynamic apparent power of the transformer of the calcium carbide furnace, and S 0 Shows the rated apparent power of the transformer of the calcium carbide furnace,
Figure BDA0002910701970000022
the average daily output of the calcium carbide furnace is shown, K represents the unit consumption of calcium carbide of the calcium carbide furnace, and omega represents the natural power factor of the calcium carbide furnace.
Further, the step S2 specifically includes the following sub-steps:
s21, acquiring a secondary phase voltage of a transformer of the calcium carbide furnace in a dynamic working state;
s22, calculating secondary phase current of a transformer of the calcium carbide furnace according to the secondary phase voltage obtained in the step S21;
s23, calculating the electrode area of the calcium carbide furnace according to the secondary phase current obtained in the step S22;
and S24, calculating the electrode diameter of the calcium carbide furnace according to the electrode area obtained in the step S23.
Further, the calculation formula of the electrode diameter of the calcium carbide furnace in the step S24 is as follows:
Figure BDA0002910701970000023
wherein D is 1 The method comprises the steps of representing the diameter of an electrode of the calcium carbide furnace, J representing the current density of the electrode, i representing the number of phases of a transformer electrode of the calcium carbide furnace, and U representing the secondary phase voltage of the transformer of the calcium carbide furnace.
Further, the step S3 specifically includes the following sub-steps:
s31, acquiring the potential gradient of a transformer of the calcium carbide furnace, and calculating the electrode spacing of the calcium carbide furnace by combining the secondary phase voltage obtained in the step S21;
and S32, calculating the electrode center circle diameter of the calcium carbide furnace according to the electrode distance obtained in the step S31 and the electrode diameter obtained in the step S24.
Further, the calculation formula of the electrode center circle diameter of the calcium carbide furnace in the step S32 is as follows:
Figure BDA0002910701970000031
wherein D is 2 The electrode center circle diameter of the calcium carbide furnace is shown, the potential gradient of a transformer of the calcium carbide furnace is shown as E, and the included angle between the electrode distance and the electrode center circle diameter is shown as theta.
The invention has the following beneficial effects: according to the invention, by optimizing the electrode parameters of the calcium carbide furnace, the ideal values of three dynamic parameters of the motion resistance, the current density and the potential gradient of the electrode of the calcium carbide furnace can be simultaneously operated at the same gear of the transformer, so that the production of the calcium carbide furnace can realize high load, high yield and low power consumption, and the requirement range of the technical indexes of the main raw materials is wider.
Drawings
FIG. 1 is a schematic flow diagram of the electrode parameter optimization method for the sealed calcium carbide furnace.
FIG. 2 is a schematic view of a pole center circle of the electrode of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
As shown in fig. 1, an embodiment of the invention provides a method for optimizing electrode parameters of a closed calcium carbide furnace, which comprises the following steps of S1 to S3:
s1, obtaining rated apparent power and average daily output parameters of a transformer of a calcium carbide furnace, and calculating dynamic apparent power of the transformer of the calcium carbide furnace;
in this embodiment, step S1 specifically includes the following sub-steps:
s11, obtaining rated apparent power and average daily output parameters of a transformer of the calcium carbide furnace, and calculating the daily output parameters of the calcium carbide furnace;
s12, calculating the dynamic active power of a transformer of the calcium carbide furnace according to the calcium carbide unit consumption of the calcium carbide furnace and the daily output parameters obtained in the step S11;
s13, according to natural power factors of the calcium carbide furnace and the dynamic active power of the transformer obtained in the step S12, calculating the dynamic apparent power of the transformer of the calcium carbide furnace, wherein the calculation formula is as follows:
Figure BDA0002910701970000041
wherein S represents the dynamic apparent power of the transformer of the calcium carbide furnace, S 0 Shows the rated apparent power of the transformer of the calcium carbide furnace,
Figure BDA0002910701970000042
the average daily output of the calcium carbide furnace is shown, K represents the unit consumption of calcium carbide of the calcium carbide furnace, and omega represents the natural power factor of the calcium carbide furnace.
Taking a calcium carbide furnace with rated apparent power of a transformer being 40500KVA as an example, the rated apparent power of the transformer of the calcium carbide furnace is 40500KVA, and the average daily output of calcium carbide of the transformer of the calcium carbide furnace per 1000KVA apparent power is 6.7 tons, so that the daily output of the calcium carbide furnace of the 40500KVA transformer is calculated, and the method specifically comprises the following steps:
Figure BDA0002910701970000051
and then calculating the dynamic active power which should be provided by the transformer of the calcium carbide furnace per hour according to the calcium carbide unit consumption of the calcium carbide furnace, which specifically comprises the following steps:
p = O × K =270 (ton) × 3100 degrees/ton ÷ 24 (hour) =34800KW
Wherein K represents the unit consumption of calcium carbide of the calcium carbide furnace.
And finally, calculating the dynamic apparent power of the transformer of the calcium carbide furnace according to the natural power factor of the calcium carbide furnace, which specifically comprises the following steps:
S＝O÷ω＝34800(KW)÷0.85＝40900(KW)
s2, obtaining secondary phase voltage of a transformer of the calcium carbide furnace in a dynamic working state, and calculating the diameter of an electrode of the calcium carbide furnace by combining the dynamic apparent power of the transformer obtained in the step S1;
in this embodiment, the step S2 specifically includes the following sub-steps:
s21, acquiring a secondary phase voltage of a transformer of the calcium carbide furnace in a dynamic working state;
s22, calculating secondary phase current of a transformer of the calcium carbide furnace according to the secondary phase voltage obtained in the step S21;
s23, calculating the electrode area of the calcium carbide furnace according to the secondary phase current obtained in the step S22;
s24, calculating the electrode diameter of the calcium carbide furnace according to the electrode area obtained in the step S23, wherein the calculation formula is as follows:
Figure BDA0002910701970000052
wherein D is 1 The method is characterized in that the method comprises the following steps of (1) representing the diameter of an electrode of the calcium carbide furnace, J representing the current density of the electrode, i representing the number of transformer electrode phases of the calcium carbide furnace, and U representing the secondary phase voltage of the transformer of the calcium carbide furnace.
Taking a calcium carbide furnace with rated apparent power of the transformer being 40500KVA as an example, the secondary phase voltage of the 40500KVA transformer of the calcium carbide furnace in a dynamic working state is 238V;
and then calculating the secondary phase current of the 40500KVA transformer of the calcium carbide furnace, which specifically comprises the following steps:
Figure BDA0002910701970000061
and then calculating the electrode area of the calcium carbide furnace, specifically:
Figure BDA0002910701970000062
and finally, calculating the diameter of the electrode of the calcium carbide furnace, which specifically comprises the following steps:
Figure BDA0002910701970000063
and S3, acquiring the potential gradient of the transformer of the calcium carbide furnace, and calculating the diameter of the electrode center circle of the calcium carbide furnace by combining the diameter of the electrode of the calcium carbide furnace obtained in the step S2.
In this embodiment, step S3 specifically includes the following sub-steps:
s31, acquiring the potential gradient of a transformer of the calcium carbide furnace, and calculating the electrode spacing of the calcium carbide furnace by combining the secondary phase voltage obtained in the step S21;
s32, calculating the diameter of the electrode center circle of the calcium carbide furnace according to the electrode distance obtained in the step S31 and the electrode diameter obtained in the step S24, wherein the calculation formula is as follows:
Figure BDA0002910701970000064
wherein D is 2 For calcium carbide furnacesThe diameter of the electrode center circle, E represents the potential gradient of the transformer of the calcium carbide furnace, and theta represents the included angle between the electrode distance and the diameter of the electrode center circle.
As shown in fig. 2, taking a calcium carbide furnace with a rated apparent power of 40500KVA as an example, the potential gradient required for obtaining the 40500KVA transformer of the calcium carbide furnace is 1.29V/cm, and calculating the electrode spacing of the calcium carbide furnace specifically:
Figure BDA0002910701970000065
and then calculating the electrode center circle diameter of the calcium carbide furnace, specifically comprising the following steps:
Figure BDA0002910701970000071
through the steps, the secondary operation voltage of the 40500KVA transformer of the calcium carbide furnace can be set between three gears of 234V,238V and 242V, the diameter of an electrode of the calcium carbide furnace is designed to be 1320mm, and the diameter of a pole center circle is designed to be 3650mm, so that the daily output of the 40500KVA transformer calcium carbide furnace is increased to 270 tons.
Based on the calcium carbide furnace electrode parameter optimization method, optimization results of electrode diameters and pole center circle diameters corresponding to rated apparent power transformers of various specifications of 25500-63000 KVA can be obtained, and are shown in table 1.
TABLE 1 electrode diameter and pole center circle diameter optimization results
Figure BDA0002910701970000072
According to the method, the electrode parameters of the calcium carbide furnace are optimized, so that the ideal values of three dynamic parameters of the movement resistance, the current density and the potential gradient of the electrode of the calcium carbide furnace can be simultaneously operated at the same gear of the transformer, and further, the production of the calcium carbide furnace can realize high load, high yield and low power consumption, and the requirement range of the technical indexes of main raw materials (blue carbon and quicklime) is wider.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Those skilled in the art, having the benefit of this disclosure, may effect numerous modifications thereto and changes may be made without departing from the scope of the invention in its aspects.

Claims (2)

1. A method for optimizing electrode parameters of a closed calcium carbide furnace is characterized by comprising the following steps:
s1, obtaining rated apparent power and average daily output parameters of a transformer of a calcium carbide furnace, and calculating dynamic apparent power of the transformer of the calcium carbide furnace, wherein the method specifically comprises the following steps:
s11, obtaining rated apparent power and average daily output parameters of a transformer of the calcium carbide furnace, and calculating the daily output parameters of the calcium carbide furnace;
s12, calculating the dynamic active power of a transformer of the calcium carbide furnace according to the calcium carbide unit consumption of the calcium carbide furnace and the daily output parameters obtained in the step S11;
s13, according to natural power factors of the calcium carbide furnace and the dynamic active power of the transformer obtained in the step S12, calculating the dynamic apparent power of the transformer of the calcium carbide furnace, wherein the calculation formula is as follows:
Figure FDA0003827109070000011
wherein S represents the dynamic apparent power of the transformer of the calcium carbide furnace, and S 0 Shows the dynamic active power of the transformer of the calcium carbide furnace,
Figure FDA0003827109070000012
the average daily output of the calcium carbide furnace is shown, K shows the unit consumption of calcium carbide of the calcium carbide furnace, and omega shows the natural power factor of the calcium carbide furnace;
s2, acquiring a secondary phase voltage of a transformer of the calcium carbide furnace in a dynamic working state, and calculating the diameter of an electrode of the calcium carbide furnace by combining the dynamic apparent power of the transformer obtained in the step S1, wherein the method specifically comprises the following steps:
s21, acquiring a secondary phase voltage of a transformer of the calcium carbide furnace in a dynamic working state;
s22, calculating secondary phase current of a transformer of the calcium carbide furnace according to the secondary phase voltage obtained in the step S21;
s23, calculating the electrode area of the calcium carbide furnace according to the secondary phase current obtained in the step S22;
s24, calculating the electrode diameter of the calcium carbide furnace according to the electrode area obtained in the step S23, wherein the calculation formula is as follows:
Figure FDA0003827109070000021
wherein D is 1 The method comprises the following steps of (1) representing the diameter of an electrode of the calcium carbide furnace, J representing the current density of the electrode, i representing the number of transformer electrode phases of the calcium carbide furnace, and U representing the secondary phase voltage of a transformer of the calcium carbide furnace;
s3, obtaining the potential gradient of the transformer of the calcium carbide furnace, and calculating the diameter of the electrode center circle of the calcium carbide furnace by combining the diameter of the electrode of the calcium carbide furnace obtained in the step S2, wherein the method specifically comprises the following steps:
s31, obtaining the potential gradient of the transformer of the calcium carbide furnace, and calculating the electrode spacing of the calcium carbide furnace by combining the secondary phase voltage obtained in the step S21;
s32, calculating the diameter of the electrode center circle of the calcium carbide furnace according to the electrode distance obtained in the step S31 and the electrode diameter obtained in the step S24, wherein the calculation formula is as follows:
Figure FDA0003827109070000022
wherein D is 2 The electrode center circle diameter of the calcium carbide furnace is represented, E represents the potential gradient of a transformer of the calcium carbide furnace, and theta represents an included angle between the electrode spacing and the electrode center circle diameter.
2. The method for optimizing the electrode parameters of the sealed calcium carbide furnace of claim 1, wherein the diameter range of the electrode corresponding to the 25500KVA transformer of the calcium carbide furnace is 1130-1150 mm, and the diameter range of the electrode center circle is 3280-3320 mm;
the diameter range of the corresponding electrode of the 27000KVA transformer of the calcium carbide furnace is 1150-1180 mm, and the diameter range of the electrode center circle is 3230-3370 mm;
the diameter range of the corresponding electrode of the 30000KVA transformer of the calcium carbide furnace is 1190-1210 mm, and the diameter range of the electrode center circle is 3460-3480 mm;
the diameter range of the corresponding electrode of the 31500KVA transformer of the calcium carbide furnace is 1200-1220 mm, and the diameter range of the electrode center circle is 3490-3520 mm;
the diameter range of the corresponding electrode of the 33000KVA transformer of the calcium carbide furnace is 1220-1240 mm, and the diameter range of the electrode center circle is 3520-3540 mm;
the diameter range of the corresponding electrode of the 36000KVA transformer of the calcium carbide furnace is 1270-1290 mm, and the diameter range of the electrode center circle is 3580-3620 mm;
the diameter range of the electrode corresponding to the 39000KVA transformer of the calcium carbide furnace is 1290-1310 mm, and the diameter range of the electrode center circle is 3620-3630 mm;
the diameter range of the corresponding electrode of the 40500KVA transformer of the calcium carbide furnace is 1310-1330 mm, and the diameter range of the electrode center circle is 3630-3660 mm;
the diameter range of the corresponding electrode of the 45000KVA transformer of the calcium carbide furnace is 1370-1390 mm, and the diameter range of the electrode center circle is 3730-3770 mm;
the diameter range of the electrode corresponding to the 63000KVA transformer of the calcium carbide furnace is 1420-1450 mm, and the diameter range of the electrode center circle is 4000-4050 mm.
CN202110085637.5A 2021-01-22 2021-01-22 Electrode parameter optimization method for closed calcium carbide furnace Active CN112880412B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110085637.5A CN112880412B (en) 2021-01-22 2021-01-22 Electrode parameter optimization method for closed calcium carbide furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110085637.5A CN112880412B (en) 2021-01-22 2021-01-22 Electrode parameter optimization method for closed calcium carbide furnace

Publications (2)

Publication Number Publication Date
CN112880412A CN112880412A (en) 2021-06-01
CN112880412B true CN112880412B (en) 2022-12-20

Family

ID=76050061

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110085637.5A Active CN112880412B (en) 2021-01-22 2021-01-22 Electrode parameter optimization method for closed calcium carbide furnace

Country Status (1)

Country Link
CN (1) CN112880412B (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005880A1 (en) * 1978-05-25 1979-12-12 Koninklijke Philips Electronics N.V. Method of and apparatus for sealing tubes constructed of metals of high thermal and electrical conductivity
CN101363096A (en) * 2008-10-09 2009-02-11 刘日宏 Smelting technology with slag of silicon-manganese and nickel iron alloys by ore furnace
CN102263412A (en) * 2011-02-24 2011-11-30 宁夏天净天达冶金有限公司 Energy-saving ferrosilicon smelting device and short-net low-voltage reactive power compensation method
CN102593845B (en) * 2012-03-09 2014-10-15 云南文山斗南锰业股份有限公司 Reactive power compensation system of alloy smelting electric furnace system
CN108225017A (en) * 2018-02-28 2018-06-29 巴涌 It is a kind of directly to design mineral hot furnace and the structure and method of stove change secondary side voltage with stove varying capacity

Also Published As

Publication number Publication date
CN112880412A (en) 2021-06-01

Similar Documents

Publication Publication Date Title
CN106684485B (en) Method for recycling waste lithium iron phosphate anode material by acid leaching method
CN107465214A (en) The sending end island control method and its controller of a kind of flexible direct current power transmission system
CN106025185A (en) Battery pole piece coating method
CN112880412B (en) Electrode parameter optimization method for closed calcium carbide furnace
CN105158540B (en) A kind of arc current evaluation method using electric arc inductance correction factor
CN103337366A (en) Flash voltage boosting agent used for capacitor working electrolyte and preparation method of flash voltage boosting agent
CN103117154A (en) Inverter welding machine power transformer nanocrystalline iron core and preparation method thereof
CN103220834B (en) A kind of microwave oven magnetic preheating control method and control circuit
CN105040037A (en) Following cathode device with distance between following cathode device and active anode kept unchanged and application of following cathode device
CN109085803B (en) Optimized scheduling method for DRAM memory packaging process
CN108550844A (en) A kind of method of modifying of sodium-ion battery positive material Prussian-blue
CN103166234A (en) Single phase grid-connected inverter reactive output control method
CN203206505U (en) Preheating control circuit of microwave oven magnetron
CN205974700U (en) Electrolysis production rare earth metal uses square electrode
CN207083026U (en) A kind of high energy pulse power control circuit
CN203850087U (en) Highly efficient and energy-saving PFC inductor with long service life
CN202906733U (en) Plasma milling arc source
CN111082472A (en) Method and system for controlling regulation of wind turbine generator inverter based on V-f cross
CN204290767U (en) A kind of easy Type of Switch Stabilivolt Source Circuit
CN109458841A (en) A kind of setting of metal-silicon furnace electrode and arrangement
CN202210767U (en) Controllable reactor
CN102586809A (en) Method for improving TiO2 cathode deoxidizing process by utilizing carbonaceous additive
CN207022240U (en) A kind of device of microwave frequency-selecting heating
Xiong et al. A Unique Formation Process on Rapidly Activating Oxygen Redox in Co-Free Li-Rich Layered Cathodes for Long-Cycle Batteries
CN106500514B (en) A method of preventing electrodes in mine hot stove deflection

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant