CN1094449A - High-resistance high-activity charging stock for electric furnace and method for making thereof - Google Patents
High-resistance high-activity charging stock for electric furnace and method for making thereof Download PDFInfo
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- CN1094449A CN1094449A CN 93110666 CN93110666A CN1094449A CN 1094449 A CN1094449 A CN 1094449A CN 93110666 CN93110666 CN 93110666 CN 93110666 A CN93110666 A CN 93110666A CN 1094449 A CN1094449 A CN 1094449A
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- Prior art keywords
- electric furnace
- nodulizing
- resistance
- charging stock
- coal
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- 230000000694 effects Effects 0.000 title abstract description 6
- 238000000034 method Methods 0.000 title abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- 230000002829 reductive effect Effects 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000002844 melting Methods 0.000 claims abstract description 11
- 230000008018 melting Effects 0.000 claims abstract description 11
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 10
- 239000011707 mineral Substances 0.000 claims abstract description 10
- 239000011230 binding agent Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 7
- 230000004907 flux Effects 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 4
- 239000003245 coal Substances 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000003610 charcoal Substances 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 239000004021 humic acid Substances 0.000 claims description 3
- 239000003077 lignite Substances 0.000 claims description 3
- 238000007605 air drying Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- -1 semicoke Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000003786 synthesis reaction Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims 1
- 230000035515 penetration Effects 0.000 abstract description 5
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 229910000640 Fe alloy Inorganic materials 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000035699 permeability Effects 0.000 abstract description 3
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000000571 coke Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005453 pelletization Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 206010013786 Dry skin Diseases 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000720 Silicomanganese Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
High-resistance high-activity charging stock for electric furnace and method for making thereof belong to chemical industry, metallurgical electric furnace melting production field.The present invention is after raw mineral materials, reductive agent and flux are added the organic compound binder mixing, repressedly be shaped to comprehensive nodulizing, be used for electrosmelting after the drying, comprehensive nodulizing epigranular, bed permeability is good, and is bigger than resistance, the physical strength height, Heat stability is good, epigranular can prevent effectively that electric furnace from the thorn fire material that collapses taking place, compared with prior art, operating voltage can improve more than 20%, the electrode depth of penetration increases by 3～8 times, economize on electricity 20～40%, and output is enhanced about more than once, improve the quality of products, consumption saves material.The present invention is applicable to the hot stove in ore deposit, arc melting metal, iron alloy genus, aluminium alloy, industrial silicon and yellow phosphorus etc.
Description
The invention belongs to chemical industry, metallurgical electric furnace melting production field.
Electrosmelting is to be the heat energy energy with the electric energy, makes reductive agent with charcoal, ore reduction is produced metal, alloy etc.Up to the present, no matter be the hot stove in ore deposit, or electric arc furnace, people are more to the structural research of the power-supply unit of electric furnace and electric furnace, structure to furnace charge then relates to seldom, and furnace charge adopts the single nodulizing of natural rich lump ore, agglomerate or extrusion forming or rolling moulding usually, and reductive agent is that coke, flux are natural lump ore, mix furnace charge by a certain percentage, furnace size is generally 5～40mm, and wherein coke size is less, and mineral granularity is bigger; Japan makes binding agent with waste residue, produces with the carbonating regimen to add charcoal pelletizing smelting silicomanganese, but is not the furnace charge of high-resistance high-activity, and its purpose is to solve the powder utilization; Adopt above-mentioned furnace charge to carry out melting, have following defective: because some ratio of component resistance of furnace charge is less than normal, and the resistance of each component differs greatly, as 30～5mm lump coke, than resistance is 10～50 Ω .cm, and the metal iron filings that the production iron alloy is used are lower than resistance, and chemically reactive is poor, speed of response is slow; Because each component granularity of furnace charge, proportion differ, add and mix inequality that produce segregation, thereby cause bed of material short circuit, electric furnace molten bath carbon deposit causes operating voltage to reduce, and reduces the electrode depth of penetration; Each component particle diameter of furnace charge is differential big, the bed permeability inequality, and the Chang Fashengci fire material that collapses, and particle diameter can not directly utilize less than the powder of 5mm, electrosmelting power consumption are greatly, thermo-efficiency is low, and reaction efficiency is low.
In order to overcome the above problems, the invention provides a kind of charging stock for electric furnace of high-resistance high-activity.
Charging stock for electric furnace provided by the invention, be to add 1～3%(butt meter behind the abundant mixing of raw mineral materials, reductive agent and flux) organic compound binder, after the mixing, through extrusion forming is the nodulizing of 30 * 25 * 20mm, perhaps when raw mineral materials granularity-200 order greater than 60% the time, available balling disc causes the spherical nodulizing of 15～20mm.Nodulizing gets final product through 150～200 ℃ of oven dry or natural air drying (moisture content is less than 1%).The high resistance organic compound binder is to be crushed to particle diameter less than 1mm with the mud coal, brown coal or the weathered coal that contain the humic acids 30% or more, in 20% NaOH solution, stirs and makes in 30～40 minutes, and whipping temp is 90～100 ℃, and is incubated use.In order to improve the resistance of furnace charge, adopt the high resistance reductive agent, replace low resistance reductive agent coke as hard coal, semicoke, charcoal etc.; For raw mineral materials, reductive agent, flux and additive, it is crushed to granularity less than 3mm, increasing its contact resistance and specific surface area, and granularity is thin more, and is higher more than resistance; For the mixing of raw material, the method that adopts high resistance raw material and low resistance raw material to mutually combine and use, forming the synthesis of mutual embedding cloth, thereby raising is than resistance and chemically reactive.
Adopt high-resistance high-activity charging stock for electric furnace melting of the present invention, have following characteristics:
1. raw mineral materials in the furnace charge, reductive agent, additive granularity are little, and contact area is big, and than resistance height, existing furnace charge improves more than 5～1000 times, thereby chemically reactive height, speed of response are fast; 2. coke resistance is corresponding in the furnace charge brings up to greater than 9 * 10
5Ω cm 3. replaces low resistance reductive agent coke with the high resistance reductive agent, and adds high-resistance organic compound binder, consists of the high resistant furnace charge system that porous is reunited, and the furnace charge bed of material can be adjusted by the physicals of nodulizing than resistance; 4. comprehensive nodulizing epigranular, bed permeability is good, can prevent effectively that electric furnace from the thorn fire material that collapses taking place, and helps improving the quality of products; 5. compared with prior art, operating voltage can improve more than 20%, the electrode depth of penetration increases by 3～8 times, can suppress not melting area-branch current loss, enlarge crucible district melting range, improve temperature of fusion, and can prevent the molten bath carbon deposit, thereby can economize on electricity 20～40%, and single furnace output is enhanced about more than once, and consumption saves material.
The present invention is applicable to the hot stove in ore deposit, arc melting metal, iron alloy genus, aluminium alloy and yellow phosphorus etc.
Embodiment:
1. be raw mineral materials with iron filings or iron scale, silica, use the electric furnace smelting duriron.Raw material, reductive agent are crushed to particle diameter less than 3mm, by the ratio of components batching, admixtion just mixes the back adding and accounts for 2% heavy left and right sides humate solution of dosage, makes the nodulizing of 30 * 20 * 25mm after mixing on the roll-type briquetting press, and furnace charge again gets product behind 180 ℃ temperature drying.Nodulizing is that 315.113 Ω .cm(lump ores are 59.20 Ω .cm than resistance than resistance), the hard coal of interpolation 50% replaces the coke powder configuration to make reductive agent, and the ratio resistance of nodulizing is 18.841 * 10
5Ω .cm, nodulizing is 86.88 * 10 than resistance during 900 ℃ of high temperature
5Ω .cm.The finished product furnace charge is gone into the stove epigranular, moisture content＜1%, good (ultimate compression strength＞80 kilogram/cm of physical strength
2, dropping strength＞10 time/meter), the thermostability height is bigger by (＞10 than resistance
5Ω .cm).Evenly rationally be distributed into electric furnace then, add silica or the reductive agent adjustment of a small amount of 15～20mm in case of necessity, operating voltage can corresponding raising more than 20%, and the electrode depth of penetration is increased to 400～800mm by original about 100, reaches economize on electricity, efficient, low consumption, economic purpose.
2. electric furnace is produced raw material, phosphorus concentrate, silica and the equal particle size after cracking＜3mm of reductive agent of yellow phosphorus, by the ratio of components batching, just mix the back and add self-control humate aqueous solution binding agent (effective constituent butt consumption 2～3%), on pelletizer, make the pelletizing of 15～20mm behind the mixing.Wet nodulizing gets the comprehensive furnace charge of finished product behind 180 ℃ of temperature dryings.The comprehensive yellow phosphorus nodulizing of preparation is ρ=22.232 * 10 than resistance
5Ω .cm, the pulverized anthracite of employing 50% replace the coke powder dosage to make reductive agent, and nodulizing is ρ=102.314 * 10 than resistance
5Ω .cm.Yellow phosphorus electric furnace is used high specific resistance, highly active comprehensive nodulizing melting, can improve operating voltage equally more than 20%, increases by 3～8 times of electrode depth of penetration; Economize on electricity 30% can also improve phosphatic reduction ratio, increases single furnace output and improves the quality of products.
Claims (4)
1, a kind of charging stock for electric furnace is after raw mineral materials, reductive agent and flux are added the organic compound binder mixing, and extrusion forming or roll into the structural synthesis nodulizing is used for electric furnace reduction melting or reduction volatilization melting after drying, it is characterized in that:
A. described organic compound binder is the humate solution that makes with the mud coal, brown coal or the weathered coal that contain the humic acids more than 30%, calculates by ratio of components, and addition is 1～3% (butt meter);
The granularity of b. described raw mineral materials, reductive agent, flux is less than 3mm, and contained humidity is less than 4% (weight percent);
C. described comprehensive nodulizing is by behind above-mentioned requirements batching and the abundant mixing, adds the nodulizing that presses to 30 * 25 * 20mm through the pair roller briquetting press, and wet nodulizing is through 150～200 ℃ of oven dry or natural air drying (moisture content is less than 1%).
2, charging stock for electric furnace according to claim 1 is characterized in that, when raw mineral materials granularity-200 order greater than 60% the time, the moulding of nodulizing also can be made the spherical nodulizing of 15～20mm with balling disc.
3, charging stock for electric furnace according to claim 1 and 2, it is characterized in that, described organic compound binder is to be crushed to particle diameter less than 1mm with the mud coal, brown coal or the weathered coal that contain the humic acids more than 30%, in 20% NaOH solution, stir and made in 30～40 minutes, whipping temp is 90～100 ℃, and insulation is used.
4, charging stock for electric furnace according to claim 1 and 2 is characterized in that, described reductive agent is hard coal, semicoke, charcoal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93110666A CN1037114C (en) | 1993-04-16 | 1993-04-16 | High-resistance high-activity charging stock for electric furnace and its producing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93110666A CN1037114C (en) | 1993-04-16 | 1993-04-16 | High-resistance high-activity charging stock for electric furnace and its producing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1094449A true CN1094449A (en) | 1994-11-02 |
| CN1037114C CN1037114C (en) | 1998-01-21 |
Family
ID=4988504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93110666A Expired - Fee Related CN1037114C (en) | 1993-04-16 | 1993-04-16 | High-resistance high-activity charging stock for electric furnace and its producing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1037114C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10505892B2 (en) | 2017-08-14 | 2019-12-10 | Stmicroelectronics S.R.L. | Method for transmitting at least one IP data packet, related system and computer program product |
| CN112940820A (en) * | 2021-01-30 | 2021-06-11 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | Mixed semi-coke for ferrosilicon production and preparation method thereof |
| CN113832339A (en) * | 2021-09-29 | 2021-12-24 | 包头钢铁（集团）有限责任公司 | Flux for sintering |
| US11356402B2 (en) | 2014-12-19 | 2022-06-07 | Stmicroelectronics S.R.L. | Method and device for transmitting an IP data packet to an IP address |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85100843A (en) * | 1985-04-01 | 1986-07-16 | 北京钢铁学院 | Process of melt-reduction for producing pig iron using coal-containing spheric agglomerates in shaft furnace |
| CN1003307B (en) * | 1985-04-20 | 1989-02-15 | 中南工业大学 | Direct Reduction Method of Consolidated Ring Groups of Organic Compounds |
-
1993
- 1993-04-16 CN CN93110666A patent/CN1037114C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11356402B2 (en) | 2014-12-19 | 2022-06-07 | Stmicroelectronics S.R.L. | Method and device for transmitting an IP data packet to an IP address |
| US10505892B2 (en) | 2017-08-14 | 2019-12-10 | Stmicroelectronics S.R.L. | Method for transmitting at least one IP data packet, related system and computer program product |
| CN112940820A (en) * | 2021-01-30 | 2021-06-11 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | Mixed semi-coke for ferrosilicon production and preparation method thereof |
| CN113832339A (en) * | 2021-09-29 | 2021-12-24 | 包头钢铁（集团）有限责任公司 | Flux for sintering |
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| Publication number | Publication date |
|---|---|
| CN1037114C (en) | 1998-01-21 |
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