CN104159350B - The mineral hot furnace energy-saving operation method therof of leveling electrode on the basis of phase voltage - Google Patents
The mineral hot furnace energy-saving operation method therof of leveling electrode on the basis of phase voltage Download PDFInfo
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- CN104159350B CN104159350B CN201410405280.4A CN201410405280A CN104159350B CN 104159350 B CN104159350 B CN 104159350B CN 201410405280 A CN201410405280 A CN 201410405280A CN 104159350 B CN104159350 B CN 104159350B
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- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 33
- 239000011707 mineral Substances 0.000 title claims abstract description 33
- 239000004020 conductor Substances 0.000 claims abstract description 11
- 230000001264 neutralization Effects 0.000 claims abstract description 11
- 239000011449 brick Substances 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 5
- 238000010304 firing Methods 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 230000001965 increased Effects 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000000875 corresponding Effects 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- UIXRSLJINYRGFQ-UHFFFAOYSA-N Calcium carbide Chemical compound [Ca+2].[C-]#[C-] UIXRSLJINYRGFQ-UHFFFAOYSA-N 0.000 abstract description 20
- 239000005997 Calcium carbide Substances 0.000 abstract description 20
- 239000002994 raw material Substances 0.000 abstract description 6
- 238000003780 insertion Methods 0.000 abstract description 2
- 229910001021 Ferroalloy Inorganic materials 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 210000004940 Nucleus Anatomy 0.000 description 1
- 102100000672 SMPX Human genes 0.000 description 1
- 108060007673 SMPX Proteins 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000001419 dependent Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003028 elevating Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000001105 regulatory Effects 0.000 description 1
- 230000000630 rising Effects 0.000 description 1
- 230000001131 transforming Effects 0.000 description 1
Abstract
The present invention relates to the mineral hot furnace energy-saving operation method therof of leveling electrode on the basis of phase voltage.This method follows the steps below: a, insertion each of three electrodes in mineral hot furnace；Then from furnace bottom carbon brick, draw three neutral conductors, introducing is controlled instrumentation operation station；Middle control instrumentation operation station is installed three phase voltage tables, obtains each of three electrodes centering point phase voltage；B, now end face to each of three electrodes carry out Levelling operation, observe the data of phase voltage table reflection simultaneously, and when each of three electrodes each phase phase voltage is basically identical, the end face of each of three electrodes is positioned in same level；Each of three electrodes in c, mineral hot furnace is from firing electrodes, repeats step b and carries out pressing of each of three electrodes, to ensure the normal rate of roasting of each of three electrodes and the active length of each of three electrodes termination.The method of the present invention can allow each of three electrodes in a basic balance, accomplish electrode the most deeply insert, the most shallow insert, simultaneously acting, temperature Centralized.Power consumption of calcium carbide per ton is made to decline and save substantial amounts of raw material simultaneously.
Description
Technical field
The present invention relates to ferroalloy and the calcium carbide industry of mine heat furnace smelting, a kind of mineral hot furnace energy-saving operation method therof of leveling electrode on the basis of phase voltage.
Background technology
At present, " a two high money " Industry Policy is tightened up by country again, and carbide limits facing many policies as " a two high money " industry.Affecting bigger " calcium carbide industry entry criteria (2014 revision) " that have Ministry of Industry and Information to issue, all parts of the country cancel electricity price subsidy successively, and calcium carbide process PVC is listed in " high pollution, high environmental risk " catalogue by " the comprehensive register of environmental conservation (version in 2013) ".
Will constantly aggravate along with calcium carbide industry production capacity surplus contradiction, the weak situation of terminal consumption can't occur big change in a short time simultaneously.Therefore, comprehensive each side factor is considered and be may determine that, carbide entirety market or still weakness, continues low ebb choppy session.
Under the most severe overall situation, as calcium carbide industry scientific and technical innovation the to be strengthened dynamics of " a two high money ".Research and development carbide production new technique, actively undergoes technological transformation, and proposes shelves upgrading, greatly develops with the New Technologies as core of saving energy and reduce the cost.Business administration to be strengthened, work well internally, improve the ability of self reply turn of the market.
Mineral hot furnace is to smelt the nucleus equipment produced, and by each of three electrodes input current in stove, produces arc resistance heat, makes raw material chemical reduction reaction at a certain temperature generate product.The operation of mineral hot furnace each of three electrodes directly affects in-furnace temperature and the balanced degree of molten bath power, determines the efficiency of matallurgical products, power consumption and quality.
Tradition utilizes ferroalloy and the calcium carbide industry of mine heat furnace smelting, and basic principle is " raw material is basis, and equipment is condition, and operation is crucial, and management is to ensure ".Among these, operation fine, scientific and rational is the most important thing.And the lifting of electrode and the key of lower slotting operation relation carbide quality, power consumption and yield especially.
Whether ferroalloy and calcium carbide industry are all to judge that electrode is the most levelling by the way of seeing electric current for a long time, namely judge to insert to same level under each electrode by the way of seeing electric current；And the electric parameter that much the most fully utilized good transformator self of enterprises can be provided by carries out the process operation of science, reduces induction reactance.And the lower slotting degree of depth of existing electrode is typically by checking hole, manually measure the degree of depth inserted under each of three electrodes with crooked chisel.But can not be reflected strictly according to the facts by the method and under electrode, insert the degree of depth, often result in each of three electrodes and can not be maintained at a plane, cause the temperature of electrode arcing not concentrate.As a example by the log that Mao County new era electrometallurgy company limited 25500KVA closed type calcium carbide furnace is conventional, electrode injustice causes power consumption to raise, Quality Down, the ratio of first-grade products can only achieve 85%～90%, and power consumption of calcium carbide per ton is about 3400～about 3700kwh, high-order power consumption also becomes ferroalloy and the heavy cost burden of calcium carbide industry.
Therefore, it is badly in need of a kind of mineral hot furnace energy-saving operation method therof.
Summary of the invention
It is an object of the invention to provide a kind of mineral hot furnace energy-saving operation method therof of leveling electrode on the basis of phase voltage.
The basic conception of the present invention is: in mineral hot furnace, each of three electrodes is inserted inside charge level, and three-phase current is sent in stove through short net and each of three electrodes, produces arc heat in the bed of material.Mineral hot furnace produces during carbide, and furnace temperature height in stove and stability thereof directly affects the quality of carbide and energy consumption is how many.By the operational approach of read fortune voltmeter lifting electrode, the size of operation resistance value can be regulated, namely have adjusted electrode load electric current and enter the size of stove power.Therefore, elevating control and the level watching of each of three electrodes plays vital effect in mineral hot furnace produces.
In calcium carbide production process, prior art often have ignored the data of phase voltage table reflection, and some enterprise is configured without phase voltage table the most at all.It is found by the applicant that the size of mineral hot furnace load and the electrode lower end distance dependent to furnace bottom, it is deep that electrode inserts furnace charge, and resistance value is the least, otherwise, resistance value is the biggest.Thus, in process of production, it is necessary to have preferable measurement, an adjusting means, to obtain optimal metallurgical effect.The operational approach of the present patent application, by seeing the data that each of three electrodes phase voltage table reflects, if each of three electrodes phase voltage difference is away from bigger, then explanation each of three electrodes termination is not or not a plane, in the deep insertion furnace charge having in each of three electrodes, have is shallow slotting, causes electrode to be not maintained in same plane acting, causing huge energy consumption, carbide quality is the most unstable simultaneously.The phase voltage different in the face of electrode is reported situations, and by Electrode control, the strict each of three electrodes phase voltage high level error that controls is less than 5V.Make each of three electrodes in a basic balance, accomplish that electrode is the most slotting, the most shallow and insert.Do work simultaneously, temperature Centralized, the degree of depth inserted under electrode is maintained at most suitable position, accomplishes that each of three electrodes termination is flat, electric current is flat, flatten mutually.Make power consumption of calcium carbide per ton decline 200kwh～400kwh, saved substantial amounts of raw material simultaneously, make equipment job stability and running rate improve, thus improve quality and the yield of product, reduce the labor intensity of workman.
The basic step of the present invention is:
1, in mineral hot furnace, A, B, C each of three electrodes is inserted, each of three electrodes spacing is equal, section is triangular arranged, from furnace bottom carbon brick draw three neutral conductors be need to deflect from high-temperature region with zinc-plated band iron after, copper cash parallel connection is used to control instrumentation operation station in introducing respectively outside stove, being respectively mounted the phase voltage table (A1, B1, C1) of corresponding three electrodes, three-phase electrode is in unloaded or light hours, and three-phase voltage is in a basic balance.According to 25500KVA closed type calcium carbide furnace transformator relevant parameter, gear of starting to walk after energising is 35 grades, and at this moment voltage is 90V.
2, increase after load, electric current, voltage, phase voltage in change, the most just require load dispatcher according to load variations, when increasing power consumption, be to see phase voltage leveling electrode, it is ensured that insert the degree of depth under electrode consistent.
3, electrode tip is cannot to observe electrode the most in one plane to work in the bed of material, and electrode tip to be allowed is reasonable flat general work in the bed of material, can only be judged by each of three electrodes phase voltage table (A1, B1, C1).According to applicant's practical operation experience for many years and repeatedly proving, draw either which type of mineral hot furnace, only grasp line voltage and the relation of phase voltage, make line voltage and phase voltage balance, in stove, electrode tip could balance.As a example by Mao County new era 25500KVA closed type calcium carbide furnace, when gear is increased to 13 grades, according to transformer parameter, Single lead line voltage at this moment is 200V, each of three electrodes line voltage and be 600V.According to the relation of line voltage Yu phase voltage, three-phase line voltage sum is each of three electrodes phase voltage summation divided by (√ 3) 1.732, and now each of three electrodes phase voltage summation should be 600/1.732=346.42V, and every electrode phase voltage is 115.47V.At this moment phase voltage summation 346.42V is constant, will strictly control each of three electrodes phase voltage on the basis of 115.47V, and error is less than 5V, and such each of three electrodes will be in a basic balance, is maintained at same plane acting.
4, in the event of each of three electrodes the most at ordinary times, as a example by 13 grades, because there being electrode deeply to insert and cause efficiently doing work, the deep electrode phase voltage inserted at this moment can be lower than the phase voltage of shallow intercalative electrode, the situation that each of three electrodes phase voltage difference is excessive occur, isochrone voltage is the most uneven.At this moment instrument work operation leveling electrode, with first step back into method, the deep electrode phase voltage data inserted can relatively low, lifting of being walked unhurriedly by this electrode, while the most according to circumstances other electrodes can appropriately press down, emphasis pays close attention to phase voltage data at any time.In a word according to shown in the method for step 3, by Electrode Fluctuation system, each of three electrodes phase voltage being adjusted to about 115.47V, each of three electrodes phase voltage difference is less than 5V.Applicant is according to line voltage and the relation of phase voltage, and at this moment line voltage can be maintained at about 200V, and line voltage difference is less than 2V.According to the method by each of three electrodes leveling.
5, the electrode in mineral hot furnace is from firing electrodes, is constantly to consume, will press according to depletion rate, to be maintained at rational position, to ensure the normal rate of roasting of electrode and the active length of electrode tip.
6, also to understand the parameter of transformator and electrode sections in detail, different Parameter analysis be adjusted, makes up to optimal power, reach energy-saving and cost-reducing purpose.
As a example by Mao County new era electrometallurgy company limited 25500KVA closed type calcium carbide furnace, the smelting process of mineral hot furnace is carried out continuously, and furnace charge continuous print is sent in burner hearth by charging system, and electrode tip is buried by furnace charge.Reaction zone concentrates on the high-temperature region of.The carbide that smelting process generates is discharged in stove by plug for outlet.Uneven due to electrode in the past, so causing power consumption rising, Quality Down, the excellent ratio of first-grade products to can only achieve 85%～90%, and power consumption of calcium carbide per ton is about 3400～about 3700kwh.
After improvement, the data reflected by phase voltage table, each of three electrodes in leveling mineral hot furnace, accomplish that each of three electrodes charge level is flat, electric current is flat, flatten mutually, make the temperature Centralized of electrode arcing together, the most conventional operational approach power consumption of calcium carbide per ton declines 200kwh～400kwh, promotes the running rate of mineral hot furnace to more than 95% simultaneously.In the case of mix material proportioning is identical, accomplishes that reduction reaction is abundant, and substantially increase product quality, the excellent ratio of first-grade products is brought up to more than 95% by original 85%～90%.
Specifically, the mineral hot furnace energy-saving operation method therof of leveling electrode on the basis of phase voltage of the present invention, it is characterized in that following the steps below:
A, inserting each of three electrodes of numbered A, B, C in mineral hot furnace, each of three electrodes spacing is equal, and section is triangular arranged；Then from furnace bottom carbon brick, draw three neutral conductors, after three neutral conductors deflect from high-temperature region with zinc-plated band iron, use copper cash parallel connection to control instrumentation operation station in introducing respectively outside stove；Being respectively mounted three neutral conductors of three electrical connections corresponding the phase voltage Table A 1 of each of three electrodes, B1, C1 on middle control instrumentation operation station, obtain each of three electrodes centering point phase voltage, three-phase electrode is in unloaded or light hours, and three-phase voltage is in a basic balance；
After b, increase load, electric current, voltage, phase voltage are in change, at this moment according to load variations, when increasing power consumption, according to phase voltage leveling electrode, to ensure that under electrode, the slotting degree of depth is consistent；Now the end face of A, B, C each of three electrodes is carried out Levelling operation, make phase voltage Table A 1, B1, C1 reflection A, B, C each of three electrodes each phase phase voltage basically identical, thus judge that each phase voltage of A, B, C each of three electrodes is consistent to the distance of furnace bottom in the bed of material, potential difference is consistent；Namely when the end face of A, B, C each of three electrodes is carried out Levelling operation, observe phase voltage Table A 1, the data of B1, C1 reflection simultaneously, when A, B, C each of three electrodes each phase phase voltage of phase voltage Table A 1, B1, C1 reflection is basically identical, can judge that the end face of A, B, C each of three electrodes is positioned in same level, at this moment stop Levelling operation；
A, B, C each of three electrodes in c, mineral hot furnace is from firing electrodes, while constantly consuming, need often to press, to keep the end face of A, B, C each of three electrodes on a horizontal plane, repeat step b and carry out pressing of A, B, C each of three electrodes, to ensure the normal rate of roasting of A, B, C each of three electrodes and the active length of A, B, C each of three electrodes termination.
In step b of the present invention during the end face of A, B, C each of three electrodes is carried out Levelling operation, observed the leveling process that carries out of end face of A, B, C each of three electrodes by phase voltage Table A 1, B1, C1, strictly control high level error that each phase phase voltage of A, B, C each of three electrodes reflects on phase voltage Table A 1, B1, C1 less than 5V.That is, as long as observing that each phase phase voltage high level error of A, B, C each of three electrodes reflected on phase voltage Table A 1, B1, C1 is less than 5V, it is assured that the same level position that the end face of A, B, C each of three electrodes is positioned in mineral hot furnace, each of three electrodes can be allowed in a basic balance, accomplish electrode the most deeply insert, the most shallow insert, simultaneously acting, temperature Centralized.Accomplish that each of three electrodes termination is flat, electric current is flat, flatten mutually.Make power consumption of calcium carbide per ton decline and save substantial amounts of raw material simultaneously, make equipment job stability and running rate improve, thus improve quality and the yield of product, reduce the labor intensity of workman.
Compared with the aforementioned existing similar products, the mineral hot furnace energy-saving operation method therof of leveling electrode on the basis of phase voltage of the present invention can allow each of three electrodes in a basic balance, accomplish electrode the most deeply insert, the most shallow insert, simultaneously acting, temperature Centralized.Accomplish that each of three electrodes termination is flat, electric current is flat, flatten mutually.Make power consumption of calcium carbide per ton decline and save substantial amounts of raw material simultaneously, make equipment job stability and running rate improve, thus improve quality and the yield of product, reduce the labor intensity of workman.
Present disclosure is further described with the following Examples, but present disclosure is not limited only in embodiment involved content.
Detailed description of the invention
Embodiment 1: described in the present embodiment on the basis of phase voltage the mineral hot furnace energy-saving operation method therof of leveling electrode, it is characterized in that following the steps below:
A, inserting each of three electrodes of numbered A, B, C in mineral hot furnace, each of three electrodes spacing is equal, and section is triangular arranged；Then from furnace bottom carbon brick, draw three neutral conductors, after three neutral conductors deflect from high-temperature region with zinc-plated band iron, use copper cash parallel connection to control instrumentation operation station in introducing respectively outside stove；Being respectively mounted three neutral conductors of three electrical connections corresponding the phase voltage Table A 1 of each of three electrodes, B1, C1 on middle control instrumentation operation station, obtain each of three electrodes centering point phase voltage, three-phase electrode is in unloaded or light hours, and three-phase voltage is in a basic balance；
After b, increase load, electric current, voltage, phase voltage are in change, at this moment according to load variations, when increasing power consumption, according to phase voltage leveling electrode, to ensure that under electrode, the slotting degree of depth is consistent；Now the end face of A, B, C each of three electrodes is carried out Levelling operation, make phase voltage Table A 1, B1, C1 reflection A, B, C each of three electrodes each phase phase voltage basically identical, thus judge that each phase voltage of A, B, C each of three electrodes is consistent to the distance of furnace bottom in the bed of material, potential difference is consistent；Namely when the end face of A, B, C each of three electrodes is carried out Levelling operation, observe phase voltage Table A 1, the data of B1, C1 reflection simultaneously, when A, B, C each of three electrodes each phase phase voltage of phase voltage Table A 1, B1, C1 reflection is basically identical, can judge that the end face of A, B, C each of three electrodes is positioned in same level, at this moment stop Levelling operation；
A, B, C each of three electrodes in c, mineral hot furnace is from firing electrodes, while constantly consuming, need often to press, to keep the end face of A, B, C each of three electrodes on a horizontal plane, repeat step b and carry out pressing of A, B, C each of three electrodes, to ensure the normal rate of roasting of A, B, C each of three electrodes and the active length of A, B, C each of three electrodes termination.
In step b described in the present embodiment during the end face of A, B, C each of three electrodes is carried out leveling, observed the leveling process that carries out of end face of A, B, C each of three electrodes by phase voltage Table A 1, B1, C1, strictly control high level error that each phase phase voltage of A, B, C each of three electrodes reflects on phase voltage Table A 1, B1, C1 less than 5V.
Levelling operation described in step b described in the present embodiment i.e. leveling electrode, with first step back into method, observing the deep electrode phase voltage data inserted can be relatively low, is walked unhurriedly by this electrode lifting by rise fall of electrodes system, other electrodes appropriately press down simultaneously, pay close attention to phase voltage data at any time.
Claims (3)
1. a mineral hot furnace energy-saving operation method therof for leveling electrode on the basis of phase voltage, is characterized in that following the steps below:
A, inserting each of three electrodes of numbered A, B, C in mineral hot furnace, each of three electrodes spacing is equal, and section is triangular arranged；Then from furnace bottom carbon brick, draw three neutral conductors, after three neutral conductors deflect from high-temperature region with zinc-plated band iron, use copper cash parallel connection to control instrumentation operation station in introducing respectively outside stove；Being respectively mounted three neutral conductors of three electrical connections corresponding the phase voltage Table A 1 of each of three electrodes, B1, C1 on middle control instrumentation operation station, obtain each of three electrodes centering point phase voltage, three-phase electrode is in unloaded or light hours, and three-phase voltage is in a basic balance；
After b, increase load, electric current, voltage, phase voltage are in change, at this moment according to load variations, when increasing power consumption, according to phase voltage leveling electrode, to ensure that under electrode, the slotting degree of depth is consistent；Now the end face of A, B, C each of three electrodes is carried out Levelling operation, make phase voltage Table A 1, B1, C1 reflection A, B, C each of three electrodes each phase phase voltage basically identical, thus judge that each phase voltage of A, B, C each of three electrodes is consistent to the distance of furnace bottom in the bed of material, potential difference is consistent；Namely when the end face of A, B, C each of three electrodes is carried out Levelling operation, observe phase voltage Table A 1, the data of B1, C1 reflection simultaneously, when A, B, C each of three electrodes each phase phase voltage of phase voltage Table A 1, B1, C1 reflection is basically identical, can judge that the end face of A, B, C each of three electrodes is positioned in same level, at this moment stop Levelling operation；
A, B, C each of three electrodes in c, mineral hot furnace is from firing electrodes, while constantly consuming, need often to press, to keep the end face of A, B, C each of three electrodes on a horizontal plane, repeat step b and carry out pressing of A, B, C each of three electrodes, to ensure the normal rate of roasting of A, B, C each of three electrodes and the active length of A, B, C each of three electrodes termination.
2. the mineral hot furnace energy-saving operation method therof of leveling electrode on the basis of phase voltage as claimed in claim 1, it is characterized in that in step b during the end face of A, B, C each of three electrodes is carried out leveling, observed the leveling process that carries out of end face of A, B, C each of three electrodes by phase voltage Table A 1, B1, C1, strictly control high level error that each phase phase voltage of A, B, C each of three electrodes reflects on phase voltage Table A 1, B1, C1 less than 5V.
3. the mineral hot furnace energy-saving operation method therof of leveling electrode on the basis of phase voltage as claimed in claim 1 or 2, it is characterized in that Levelling operation described in step b i.e. leveling electrode, with first step back into method, observing the deep electrode phase voltage data inserted can be relatively low, this electrode walked unhurriedly lifting by rise fall of electrodes system, other electrodes appropriately press down simultaneously, pay close attention to phase voltage data at any time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410405280.4A CN104159350B (en) | 2014-08-18 | The mineral hot furnace energy-saving operation method therof of leveling electrode on the basis of phase voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410405280.4A CN104159350B (en) | 2014-08-18 | The mineral hot furnace energy-saving operation method therof of leveling electrode on the basis of phase voltage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104159350A CN104159350A (en) | 2014-11-19 |
| CN104159350B true CN104159350B (en) | 2016-11-30 |
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Effective date of registration: 20211013 Address after: No. 368, Wenjing street, Chongyang street, Chongzhou, Chengdu, Sichuan 610000 Patentee after: Sichuan Zhongtai new era Technology Group Co.,Ltd. Address before: 611230 No. 370, Wenjing street, Chongzhou, Chengdu, Sichuan Patentee before: Sun Mengjun |