CN106636550B - A kind of molten iron collection slag agent - Google Patents
A kind of molten iron collection slag agent Download PDFInfo
- Publication number
- CN106636550B CN106636550B CN201610937738.XA CN201610937738A CN106636550B CN 106636550 B CN106636550 B CN 106636550B CN 201610937738 A CN201610937738 A CN 201610937738A CN 106636550 B CN106636550 B CN 106636550B
- Authority
- CN
- China
- Prior art keywords
- molten iron
- slag agent
- bauxite
- powder
- collection slag
- 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 - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0087—Treatment of slags covering the steel bath, e.g. for separating slag from the molten metal
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
- C21C7/0645—Agents used for dephosphorising or desulfurising
-
- 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
A kind of molten iron collection slag agent of disclosure of the invention, it is made of following component, quick lime, perlite, straw ash, periclase, cobalt oxide, zeolite powder, sepiolite powder, chrome green, hollow glass micropearl powder, chromium carbide, modified bauxite, molten iron collection slag agent of the present invention, at low cost, it is good to be bonded the secured spreadability of residue for dispersibility, good flowing properties, high temperature resistant has extraordinary heat resistanceheat resistant insulation effect.
Description
Technical field
The present invention relates to collection slag agent fields, more particularly to a kind of molten iron collection slag agent.
Background technique
Steel is iron-stone through smelting, and iron ore is not generally pure, there is nonmetallic impurity sulphur, phosphorus etc., non-
Metal impurities main component is silicate, oxide etc., and when iron ore is in 1600 DEG C of pyrolytic semltings, nonmetallic impurity is also
It is melted, is in many small fast impurity of group because specific gravity is light compared with iron to form the molten slurry of molten condition because different from the property of iron
Dispersion swims in high temperature liquid iron surface, forms residue after condensation,, can be with molten iron one if residue does not remove in molten iron casting casting
Sand-lime is formed with injection, causes casting quality problem.
The casting widely used rice-straw ash of producer had heat preservation and molten iron oxidation is avoided to act in the past, also there is certain collection slag effect
Fruit, but its serious pollution environment, use is cumbersome certainly, and the rainy day wants mould proof, and fine day wants fire-proof, while also will cause steel
Iron carburetting.With the continuous development of liquid casting Hydraulic Field, it is subsequent directly with crude pearlite it is broken after make directly as collection slag agent
With and extruding, melting heated on molten iron surface using perlite bond together with the slag on molten iron surface and form collection slag and cover
Cap rock, collection slag, coverage effect are far superior to rice-straw ash, but collection slag blanket intensity is inadequate, easily broken when skimming, and glue to slag
Attached not strong enough, crude pearlite is burst on molten iron surface can cause to splash, the non-swelling granular in part easily enter type chamber from cast gate and
Cause dreg defect.
Summary of the invention
The object of the present invention is to provide a kind of molten iron collection slag agent.
The invention is realized by the following technical scheme:
A kind of molten iron collection slag agent, is made of following component by weight, quick lime 5-8, perlite 50-60, straw ash
1-3, periclase 4-6, cobalt oxide 0.2-0.4, zeolite powder 3-5, sepiolite powder 6-9, chrome green 0.4-0.6, hollow glass
Microballon powder 6-10, chromium carbide 0.1-0.3, modified bauxite 4-6, wherein modified bauxite and chrome green mass ratio are 10:
1, straw ash and chromium carbide mass ratio are 10:1.
Further, the modified bauxite the preparation method comprises the following steps:
1. bauxite is pressurizeed at 120-125 DEG C, then moulding pressure 1.5MPa, pressure maintaining 15min add again
The ethylene glycol for adding bauxite quality 5%, is ground, milling time 30min, and grinding temperature is 28 DEG C, is then dried；
2. adding the hydrogen peroxide of its quality 1.5% into treated bauxite, after mixing evenly, it is heated to 80-85
DEG C, after keeping the temperature 1-2h, it is dried.
Further, the straw ash the preparation method comprises the following steps: wheat stalk is mixed with rice straw by 3:1 mass ratio
Afterwards, completely burned smashs ashes uniformly to get straw ash to pieces to ashes.
Further, the preparation method of the molten iron collection slag agent, comprising the following steps:
(1) each raw material is crossed into 120 meshes respectively；
(2) first by the quick lime of corresponding component, perlite, straw ash, periclase, cobalt oxide, zeolite powder, sepiolite powder,
Hollow glass micropearl powder, chromium carbide soil all be added batch mixers in, stirred evenly with 150r/min revolving speed, by chrome green with
Modification bauxite elder generation after evenly mixing, is then added in batch mixer at 138-140 DEG C, stirs 30min with 200r/min revolving speed
Then, it is put into drying box to be dried, drying temperature is 200 DEG C, and cooled to room temperature obtains finished product, weight packaging.
Further, the molten iron integrates slag agent usage amount as 0.6-0.8 kg/ton of molten iron.
The present invention passes through a large amount of experimental study, by being modified to bauxite, passes through modified bauxite and three oxidations
The effect for the coordinated perlite that two chromium quantitatively cooperate after enabling to perlite to be sprinkling upon molten iron surface, contacts the portion of molten iron
Point under high temperature action can Flashmelt extruding, and upper layer perlite can also melt extruding, therefore upper layer pearl faster
Rock will not become free particles, and so as to avoid because of the violent extruding of moisture in free particles, generation is jumped phenomenon, and when casting is easy
With molten iron inflow type chamber, casting quality is influenced, spreadability and heat insulating ability are greatly improved, and improves sulphur removal, dephosphorization
Effect can realize that preferably heat preservation, absorption are mingled with, avoid molten iron carburetting and absorb the sulphur P elements in molten iron to molten iron.
The invention has the advantages that compared with prior art:
Molten iron collection slag agent of the present invention, at low cost, dispersibility, good flowing properties, the bonding secured spreadability of residue is good, resistance to height
Temperature has extraordinary heat resistanceheat resistant insulation effect, can be effectively isolated to molten iron and air, keep nodularization process steady, slagging-off rate
Height does not influence hot metal composition, is in brittleness after scum is cooling, convenient for recycling, can reduce molten iron loss, and collection slag blanket intensity is high,
It is non-breakable when skimming, it is strong to the adherency of slag；It is acted on by the quantitative coordinated of straw ash and chromium carbide, nodularization can be made
Process is steady, greatly improves slagging-off rate, while the molten iron proportion of goods damageds reduce 50% or more, while having saved slag-removing time 1/3
More than；Using molten iron collection slag agent of the present invention not only to the chemical component of molten iron, metallographic structure, mechanical performance and the equal nothing of casting quality
Adverse effect, moreover it is possible to improve the quality of casting.
Specific embodiment
Embodiment 1
A kind of molten iron collection slag agent, is made of following component by weight, quick lime 5, perlite 50, straw ash 1, Fang Mei
Stone 4, zeolite powder 3, sepiolite powder 6, chrome green 0.4, hollow glass micropearl powder 6, chromium carbide 0.1, is modified cobalt oxide 0.2
Bauxite 4, wherein modified bauxite and chrome green mass ratio are 10:1, straw ash and chromium carbide mass ratio are 10:1.
Embodiment 2
A kind of molten iron collection slag agent, is made of following component by weight, quick lime 8, perlite 60, straw ash 3, Fang Mei
Stone 6, zeolite powder 5, sepiolite powder 9, chrome green 0.6, hollow glass micropearl powder 10, chromium carbide 0.3, is modified cobalt oxide 0.4
Bauxite 6, wherein modified bauxite and chrome green mass ratio are 10:1, straw ash and chromium carbide mass ratio are 10:1.
Embodiment 3
A kind of molten iron collection slag agent, is made of following component by weight, quick lime 6, perlite 55, straw ash 2, Fang Mei
Stone 5, zeolite powder 4, sepiolite powder 7, chrome green 0.5, hollow glass micropearl powder 8, chromium carbide 0.2, is modified cobalt oxide 0.3
Bauxite 5, wherein modified bauxite and chrome green mass ratio are 10:1, straw ash and chromium carbide mass ratio are 10:1.
Above embodiments the preparation method comprises the following steps:
(1) each raw material is crossed into 120 meshes respectively；
(2) first by the quick lime of corresponding component, perlite, straw ash, periclase, cobalt oxide, zeolite powder, sepiolite powder,
Hollow glass micropearl powder, chromium carbide soil all be added batch mixers in, stirred evenly with 150r/min revolving speed, by chrome green with
Modification bauxite elder generation after evenly mixing, is then added in batch mixer at 138-140 DEG C, stirs 30min with 200r/min revolving speed
Then, it is put into drying box to be dried, drying temperature is 200 DEG C, and cooled to room temperature obtains finished product, weight packaging.
Molten iron integrates slag agent usage amount as 0.6-0.8 kg/ton of molten iron.
It is as follows that the present invention collects slag agent physical property:
Table 1
| The coefficient of expansion | Mohs' hardness | Specific gravity (g/cm3) | Fusion temperature (DEG C) | |
| Embodiment 1 | 7.4 | 6.4 | 1.28 | 1286 |
| Embodiment 2 | 7.3 | 6.6 | 1.29 | 1288 |
| Embodiment 3 | 7.2 | 6.5 | 1.29 | 1287 |
| Ordinary pearl rock collection slag agent | 5.8 | 4.1 | 1.31 | 1128 |
As can be seen from Table 1, slag agent is collected in the present invention, high temperature resistant, the coefficient of expansion is big, guarantee the steady of nodularization process, than
It complies with standard again.
Comparison present invention collection slag agent and comparative example respective performances:
Table 2
| Quantity of slag kg | Iron loss kg in slag | Ton iron iron loss kg/t | |
| Embodiment 1 | 438.25 | 46.87 | 0.72 |
| Embodiment 2 | 432.84 | 40.82 | 0.68 |
| Embodiment 3 | 435.64 | 44.18 | 0.70 |
| Comparative example 1 | 475.28 | 86.15 | 1.68 |
| Comparative example 2 | 459.58 | 69.54 | 1.38 |
| Comparative example 3 | 538.88 | 99.62 | 1.89 |
Wherein, comparative example 1 are as follows: the difference with embodiment 2 is only that modified bauxite and chrome green mass ratio are 9:
1, the amount of modified bauxite is constant；
Comparative example 2 are as follows: the difference with embodiment 2 is only that straw ash and chromium carbide mass ratio is 11:1, the amount of chromium carbide
It is constant；
Comparative example 3 are as follows: the difference with embodiment 2, which is only that, does not add modified bauxite, and the amount of chrome green is constant.
As can be seen from Table 2, modified bauxite and chrome green mass ratio and straw ash and chromium carbide mass ratio are to slag
Amount and iron loss are affected, and the presence or absence of modified bauxite influences the quantity of slag and iron loss very big.
Claims (3)
1. a kind of molten iron collection slag agent, which is characterized in that be made by weight of following component, quick lime 5-8, perlite 50-
60, straw ash 1-3, periclase 4-6, cobalt oxide 0.2-0.4, zeolite powder 3-5, sepiolite powder 6-9, chrome green 0.4-0.6,
Hollow glass micropearl powder 6-10, chromium carbide 0.1-0.3, modified bauxite 4-6, wherein modified bauxite and chrome green quality
Than being 10:1 for 10:1, straw ash and chromium carbide mass ratio；The modified bauxite the preparation method comprises the following steps:
1. bauxite is pressurizeed at 120-125 DEG C, then moulding pressure 1.5MPa, pressure maintaining 15min add aluminium again
The ethylene glycol of alumina quality 5%, is ground, milling time 30min, and grinding temperature is 28 DEG C, is then dried；
2. adding the hydrogen peroxide of its quality 1.5% into treated bauxite, after mixing evenly, it is heated to 80-85 DEG C,
After keeping the temperature 1-2h, it is dried；The straw ash the preparation method comprises the following steps: wheat stalk and rice straw are pressed 3:1 mass
After ratio mixing, completely burned to ashes smashs ashes uniformly to get straw ash to pieces.
2. a kind of molten iron collection slag agent according to claim 1, which is characterized in that the preparation side of the molten iron collection slag agent
Method, comprising the following steps:
(1) each raw material is crossed into 120 meshes respectively；
(2) first by the quick lime of corresponding component, perlite, straw ash, periclase, cobalt oxide, zeolite powder, sepiolite powder, hollow
Glass microsphere powder, chromium carbide soil are all added in batch mixer, are stirred evenly with 150r/min revolving speed, by chrome green and modification
Bauxite elder generation after evenly mixing, is then added in batch mixer at 138-140 DEG C, then with 200r/min revolving speed stirring 30min,
It is put into drying box to be dried, drying temperature is 200 DEG C, and cooled to room temperature obtains finished product, weight packaging.
3. a kind of molten iron collection slag agent according to claim 1, which is characterized in that the molten iron integrates slag agent usage amount as 0.6-
0.8 kg/ton of molten iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610937738.XA CN106636550B (en) | 2016-10-24 | 2016-10-24 | A kind of molten iron collection slag agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610937738.XA CN106636550B (en) | 2016-10-24 | 2016-10-24 | A kind of molten iron collection slag agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106636550A CN106636550A (en) | 2017-05-10 |
| CN106636550B true CN106636550B (en) | 2019-03-22 |
Family
ID=58820984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610937738.XA Expired - Fee Related CN106636550B (en) | 2016-10-24 | 2016-10-24 | A kind of molten iron collection slag agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106636550B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1008797B (en) * | 1987-11-04 | 1990-07-18 | 唐国进 | Slagging heat-insulating covering agent |
| CN103495714B (en) * | 2013-10-23 | 2016-01-13 | 武汉钢铁(集团)公司 | Containing the peritectic steel covering slag and preparation method thereof of cobalt oxide |
| CN105039630A (en) * | 2015-08-20 | 2015-11-11 | 合肥市田源精铸有限公司 | Titanium-containing efficient slag remover and preparing method |
-
2016
- 2016-10-24 CN CN201610937738.XA patent/CN106636550B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN106636550A (en) | 2017-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101433950B (en) | Method for preparing protecting residue from recovery refining slag | |
| US3542534A (en) | Process for pelletizing glassmaking materials | |
| CN106591575B (en) | Low energy consumption coal-pressing ball and preparation method thereof | |
| CN100564548C (en) | A kind of high-basicity refining slag for slag washing of revolving furnace steel-making | |
| CN102586544B (en) | High-calcium pre-molten slag modification aluminium slag ball and preparation method thereof | |
| CN106480307B (en) | A method of improving homogeneous agglomerate | |
| CN104498668B (en) | The molten steel scavenger of a kind of composite sphere form and production method | |
| CN104098272A (en) | Method for using blast furnace slag to produce micro-crystalline light brick | |
| CN104556702B (en) | A kind of method that high alkalinity devitrified glass is prepared using metallurgical slag | |
| CN102233411B (en) | Low-alkalinity crystallizer covering slag prepared from building waste clay | |
| CN101734857A (en) | Method for manufacturing black microcrystalline glass plates from molybdenum tailings | |
| CN102756112B (en) | Composite slag remover for casting | |
| CN109266847A (en) | The preparation method of low-temperature concretion metallurgical briquetting | |
| CN101759368A (en) | Green glass-ceramic plate made from lead-zinc smelting slag and manufacturing method thereof | |
| CN101817640B (en) | Method for manufacturing microlite by using high-silicon iron tailings | |
| CN106278176B (en) | A kind of high-strength ceramic granule and preparation method thereof | |
| CN103589826B (en) | A kind of molten iron skim agent and preparation method thereof | |
| CN104058591A (en) | Method for producing foam microcrystal thermal insulating decoration board by use of fluorite tailings | |
| CN108358456A (en) | A method of preparing devitrified glass using golden tailing and fluorite tailing | |
| CN106480308B (en) | A method of reducing sintering solid burnup | |
| CN104529381B (en) | A kind of high temperature nickel ferroalloy waste residue is the method that raw material manufactures microlite | |
| CN106636550B (en) | A kind of molten iron collection slag agent | |
| CN108516846A (en) | A kind of hot-blast stove silica brick and preparation method thereof | |
| CN107354267A (en) | A kind of heat preserving agent for liquid steel | |
| CN101544502B (en) | Anorthite light weight refractory and preparation method thereof |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190322 Termination date: 20201024 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |