CN1019204B - Recovery and utilization method of electric furnace powder dust - Google Patents
Recovery and utilization method of electric furnace powder dustInfo
- Publication number
- CN1019204B CN1019204B CN91103832A CN91103832A CN1019204B CN 1019204 B CN1019204 B CN 1019204B CN 91103832 A CN91103832 A CN 91103832A CN 91103832 A CN91103832 A CN 91103832A CN 1019204 B CN1019204 B CN 1019204B
- Authority
- CN
- China
- Prior art keywords
- weight
- electric furnace
- dust
- powder dust
- steel
- 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.)
- Expired
Links
Classifications
-
- 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
- Y02P10/20—Recycling
Abstract
The present invention relates to a recovery and utilization method of electric furnace powder dust, which is characterized in that electric furnace powder dust is pressed in a cold way, shaped, dried after being mixed with carbon powder and water, and a finished product can manufactured; the finished product used as a powder dust carburant is added to the bottom of an electric furnace to replace the original auxiliary materials powdered coke used by the original production; common steel or special steel is smelted under the conditions that the technical processes or the technical conditions of the original production are not changed. The method has the advantage of simple technical process; most of iron in the electric furnace powder dust can be recovered, and the loss of raw materials can be reduced; the method can reduce production cost, eliminate environment pollution and improve the quality of smelting steel.
Description
The invention belongs to the smelting technology scope of steel, be specifically related to a kind of recoverying and utilizing method of electric furnace dust.
Electric furnace steel making is to be raw material with the steel scrap, adds the deficiency that the coke powder replenishes carbon content in the raw material.Because the coke opaque is subjected to the impact of high temperature hot gas easily and drifts about with dirt gas, make troubles to operation, and the loss of coke powder is very big.On the other hand, in smelting process, discharge a large amount of dust, carbon content 2-3% in this dust, trioxygen-containingization two iron are up to more than 50%, wherein iron-holder and rich ore are very approaching, and these dust are discarded in the lump with slag after fly-ash separator separates, and cause the pollution and the raw-material waste of environment.
The objective of the invention is to provide a kind of technological process simple electric furnace dust recoverying and utilizing method.
Be achieved in that electric furnace dust and carbon dust cooperate by a certain percentage, add again that an amount of water (with extrusion forming time push not water outlet be as the criterion) mixes after coldmoulding, drying obtain its main component content is H
2O≤3%(weight), S≤1%, C 〉=30%, the goods of P≤9 ‰ replace the used coke powder auxiliary material of original production as the dust carburelant, place the electric furnace bottom not changing the smelting of carrying out ordinary steel or special steel under original production process process and the processing condition.
The fusing point of this dust carburelant is lower, and contains higher ferric oxide, the P between the melting period of smelting process in the raw material
2O
5Following reaction takes place with the FeO in the slag:
The FeOP that produces by 2. formula
2O
5Get rid of with the fusing slag, can reduce phosphorus content in the steel.
Positively effect of the present invention:
1. with simple method electric furnace dust is made the dust carburelant as steelmaking ingredient, make that the iron more than 50% is reclaimed in the electric furnace dust, can reduce raw-material loss, reduce production costs and eliminate environmental pollution;
2. dust carburelant fusing point of the present invention is lower, forms the foamy slag of good fluidity in smelting process, easily impurity is taken out of.Help operation simultaneously, make single stove steel-making time average shorten 5 minutes;
3. tangible dephosphorization effect is arranged in carburetting, compare when it melts clear middle phosphorus content and does not add the dust carburelant and reduce by 0.02%.
Because above-mentioned the 2nd, the 3rd effect of recoverying and utilizing method of the present invention, thereby the steel-making quality improves relatively.
The invention will be further described below in conjunction with embodiment:
Embodiment 1: the recoverying and utilizing method of electric furnace dust is to contain Fe
2O
335.03%(weight), C2.79%, P
2O
50.252%, the electric furnace dust of S0.751% and contain C＞85%(weight) coke powder and water press proportioning:
Electric furnace dust 50%(weight);
Coke powder 50%(weight);
Water accounts for the 3-5% of above-mentioned two kinds of weight of material,
After the mixing, through 8-25kg/cm
2Pressure coldmoulding, under 120 ℃ temperature, dry.Its main component of resulting product is Fe
2O
323.86%(weight), C31.29%, P
2O
50.198%, S0.323%, H
2O1.29% adds the electric furnace bottom as the dust carburelant, smelts ordinary steel or special steel by original production process process and processing condition.
Embodiment 2: the recoverying and utilizing method of electric furnace dust, its technological process and condition be with embodiment 1, and difference is that material proportion presses:
Electric furnace dust 60%(weight)
Coke powder 40%(weight)
Water accounts for the 3-5% of above-mentioned two kinds of materials,
The main component content of resulting product is:
Fe
2O
329.6%(weight)
C 28.9%(weight)
P
2O
50.382%(weight)
S 0.72%(weight)
H
2O 1.29%(weight)
Embodiment 3: the recoverying and utilizing method of electric furnace dust, its technological process and condition are with embodiment 1, and difference is that the coke powder replaces with graphite, and proportioning is pressed:
Electric furnace dust 60%(weight)
Graphite 40%(weight)
Water accounts for the 3-5% of above-mentioned two kinds of weight of material,
Embodiment 4: the recoverying and utilizing method of electric furnace dust, its technological process and condition are with embodiment 1, and difference is that the coke powder replaces with coal dust, and proportioning is pressed:
Electric furnace dust 30%(weight)
Coal dust 70%(weight)
Water accounts for the 3-5% of above-mentioned two kinds of weight of material.
Claims (3)
1, a kind of recoverying and utilizing method of electric furnace dust is characterized in that, electric furnace dust and coke powder, water are pressed proportioning:
Electric furnace dust 50～60% (weight)
Coke powder 40～50% (weight)
Water accounts for 3～5% of above-mentioned two kinds of weight of material, after the mixing, through 8～25kg/cm
2Pressure coldmoulding, dry under 120 ℃ temperature, the main component content of resulting product is:
H
2O≤3% (weight)
S≤1% (weight)
C 〉=30% (weight)
P≤9 ‰ (weight)
Fe
2O
3〉=23% (weight)
Add the electric furnace bottom as the dust carburelant, smelt ordinary steel or special steel by original production process process and processing condition.
According to the recoverying and utilizing method of claim 1, it is characterized in that 2, described coke powder can replace with graphite, proportioning is pressed:
Electric furnace dust 60%(weight)
Graphite 40%(weight)
Water accounts for the 3-5% of above-mentioned two kinds of weight of material,
According to the recoverying and utilizing method of claim 1, it is characterized in that 3, described coke powder can replace with coal dust, proportioning is pressed:
Electric furnace dust 30%(weight)
Coal dust 70%(weight)
Water accounts for the 3-5% of above-mentioned two kinds of weight of material,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91103832A CN1019204B (en) | 1991-06-13 | 1991-06-13 | Recovery and utilization method of electric furnace powder dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91103832A CN1019204B (en) | 1991-06-13 | 1991-06-13 | Recovery and utilization method of electric furnace powder dust |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1055955A CN1055955A (en) | 1991-11-06 |
| CN1019204B true CN1019204B (en) | 1992-11-25 |
Family
ID=4906295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91103832A Expired CN1019204B (en) | 1991-06-13 | 1991-06-13 | Recovery and utilization method of electric furnace powder dust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1019204B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1102639C (en) * | 2000-04-30 | 2003-03-05 | 中国石油化工集团公司 | Residuum hydrotreatment catalyst and its preparation method |
| CN1101455C (en) * | 2000-05-26 | 2003-02-12 | 中国石油化工集团公司 | Hydrorefining catalyst for hydrocarbons and its preparing process |
| JP2006104528A (en) * | 2004-10-06 | 2006-04-20 | Ntn Corp | Solidified material of steelmaking dust, and manufacturing method therefor |
| JP5090655B2 (en) | 2006-03-31 | 2012-12-05 | Ｎｔｎ株式会社 | Steelmaking dust recycling method |
| CN107723552A (en) * | 2017-09-21 | 2018-02-23 | 汶川县三力铁合金有限责任公司 | A kind of environmentally friendly ash makees the method that decarburizer is silicochromium decarburization in shaking ladle |
| CN112608777A (en) * | 2020-10-27 | 2021-04-06 | 安徽钢研新材料科技有限公司 | Waste coke powder bonded recycled fuel and preparation method thereof |
-
1991
- 1991-06-13 CN CN91103832A patent/CN1019204B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1055955A (en) | 1991-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103468961B (en) | A kind of airtight cupola furnace process Steel Plant are containing zinc, lead powder dirt processing method | |
| CN101353708B (en) | Nickel iron smelting process with nickel oxide ore and stainless steel production wastes as raw materials | |
| US4940487A (en) | Process for utilizing of zinc-containing metallurgical dusts and sludges | |
| AT403055B (en) | METHOD FOR RECYCLING IRONIC WASTE OR RESIDUES | |
| CN102925675A (en) | Method for recovering sludge from smelting ironmaking | |
| US5833735A (en) | Method of making steel | |
| CN1019204B (en) | Recovery and utilization method of electric furnace powder dust | |
| CN1537959A (en) | Cold aggregated pellet ore for ironmaking in blast furnace and its preparation method | |
| CN102653822B (en) | Iron-containing solid byproduct of iron making by smelting reduction and manufacturing method thereof | |
| CN1050410A (en) | A kind of dust dry cold that metallurgical furnace is discharged is pressed caked method | |
| CN115716738B (en) | Production process of high-strength steel slag brick | |
| CN115679097B (en) | Method for recycling ironmaking gas ash by using converter slag and refining dust | |
| WO1999035294A1 (en) | Method for producing pig iron | |
| JP2000054039A (en) | Metal lead recovering method from lead-containing material | |
| CN1041328C (en) | Method of direct steel-smelting of cooled agglomerated pellet | |
| CN1107893A (en) | Production method for spongy iron | |
| CN1091779A (en) | Technique for smelting ferrochrome using powdered Cr ore reductive sintered blocks | |
| KR100905581B1 (en) | Coal Briquettes For Iron and Steel Making Process, Method Of Manufacturing Thereof | |
| CN1240860C (en) | Pyrogenic enrichment method of valuable metals in ocean cobalt-rich crusts | |
| US2184318A (en) | Process for simultaneous production of alumina cement and pig iron in blast furnaces | |
| CN113846234A (en) | Rotary kiln volatilization treatment method for high-silicon zinc leaching residues | |
| CN1045477C (en) | Method for direct production of Si-Al-Ba-Ca-Fe alloy from ore | |
| CN111004929A (en) | Method for producing silicon-vanadium alloy by using vanadium-containing molten iron and silica | |
| CN1105192C (en) | Composite C-Fe-Ba-Al alloy block and its production process | |
| CN1093564C (en) | Technology for producing rare earth barium silicide alloy by carbon thermal reduction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |