CN106636550A - Molten iron slag collecting agent - Google Patents
Molten iron slag collecting agent Download PDFInfo
- Publication number
- CN106636550A CN106636550A CN201610937738.XA CN201610937738A CN106636550A CN 106636550 A CN106636550 A CN 106636550A CN 201610937738 A CN201610937738 A CN 201610937738A CN 106636550 A CN106636550 A CN 106636550A
- Authority
- CN
- China
- Prior art keywords
- molten iron
- bauxite
- powder
- slag agent
- 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.)
- Granted
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a molten iron slag collecting agent. The molten iron slag collecting agent is prepared from quick lime, perlite, straw ash, periclase, cobalt oxide, zeolite powder, sepiolite powder, chromic oxide, hollow glass bead powder, chromium carbide and modified bauxite. The molten iron slag collecting agent is low in cost, good in dispersibility and flowing property, capable of firmly adhering to slag, good in spreading performance and resistant to high temperature and has a quite good heat-resistance heat-preservation action.
Description
Technical field
The present invention relates to collect slag agent field, more particularly to a kind of molten iron collection slag agent.
Background technology
Iron and steel is that iron-stone Jing smeltings are formed, and iron ore is not typically 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
Be melted, because different from the property of iron, so as to form the molten slurry of molten condition, because proportion it is light compared with iron, in the fast impurity of many little groups
Dispersion swims in high temperature liquid iron surface, and residue is formed after condensation, in molten iron casting foundry goods, if residue is not removed, and can be with molten iron one
Sand-lime is formed with injection, casting quality problem is caused.
Casting the widely used rice-straw ash of producer in the past has insulation and avoids molten iron oxidation from acting on, and also has certain collection slag effect
Really, but its serious environment pollution, using cumbersome, the rainy day is mould proof, and fine day wants fire-proof, while can also cause steel for keeping
Iron carburetting.As liquid casts the continuous development of Hydraulic Field, make directly as collection slag agent after subsequently directly being crushed with crude pearlite
With, it is heated and expanded, melting on molten iron surface using perlite, bond together with the slag on molten iron surface and form collection slag and cover
Cap rock, its collection slag, coverage effect are far superior to rice-straw ash, but collect slag blanket insufficient strength, broken when skimming, and slag is glued
Attached not strong enough, crude pearlite bursts on molten iron surface can cause splashing, and the non-swelling granular in part is easily from cast gate into die cavity
Cause dreg defect.
The content of the invention
It is an object of the invention to provide a kind of molten iron collection slag agent.
The present invention is achieved through the following technical solutions：
A kind of molten iron collection slag agent, is made up 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 is 10 with chrome green mass ratio:1, straw
Stalk ash is 10 with chromium carbide mass ratio:1.
Further, the preparation method of the modified bauxite is：
1. bauxite is pressurizeed at 120-125 DEG C, moulding pressure is 1.5MPa, pressurize 15min, and aluminium is then added again
The ethylene glycol of alumina quality 5%, is ground, and milling time is 30min, and grinding temperature is 28 DEG C, is then dried；
2. add the hydrogen peroxide of its quality 1.5% in the bauxite after above-mentioned process, after stirring, be heated to 80-85 DEG C,
After insulation 1-2h, it is dried, you can.
Further, the preparation method of the straw ash is：Wheat stalk and rice straw are pressed into 3:1 mass ratio mixes
Afterwards, burn completely to ashes, ashes are smashed to pieces uniformly, obtain final product straw ash.
Further, the preparation method of described molten iron collection slag agent, comprises the following steps：
（1）Each raw material is crossed respectively 120 mesh sieves；
（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 mixers, are stirred with 150r/min rotating speeds, by chrome green with it is modified
Then bauxite in being then added to batch mixer, 30min is stirred with 200r/min rotating speeds first at 138-140 DEG C after uniform mixing,
It is put into drying baker to be dried, drying temperature is 200 DEG C, naturally cools 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, by being modified to bauxite, is aoxidized through substantial amounts of experimental study by modified bauxite and three
The perlitic effect of coordinated that two chromium quantitatively coordinate, enables to perlite and is sprinkling upon behind molten iron surface, contacts the portion of molten iron
Point under high temperature action can Flashmelt it is expanded, and upper strata perlite also can faster melt expanded, therefore upper strata pearl
Rock will not become free particles, so as to avoid because moisture is acutely expanded in free particles, produce phenomenon of jumping, easy during cast
Die cavity is flowed into molten iron, casting quality is affected, greatly improve spreadability and heat insulating ability, and improve sulphur removal, dephosphorization
Effect, can realize that preferably insulation, absorption are mingled with, avoid molten iron carburetting and absorb the sulphur P elements in molten iron to molten iron.
The invention has the beneficial effects as follows, compared with prior art：
Molten iron collection slag agent of the present invention, low cost, dispersiveness, good flowing properties, the firm spreadability of bonding residue is good, high temperature resistant, tool
There is extraordinary heat resistanceheat resistant insulation effect, molten iron can be effectively isolated with air, make nodularization process steady, slagging-off rate is high, no
Hot metal composition is affected, is in fragility after scum cooling, be easy to reclaim, molten iron loss can be reduced, collection slag blanket intensity is high, when skimming
Not broken, the adhesion to slag is strong；Acted on by the quantitative coordinated of straw ash and chromium carbide, equal can nodularization process
Surely, slagging-off rate is greatly improved, while the molten iron proportion of goods damageds reduce more than 50%, while having saved slag-removing time more than 1/3；
Using molten iron collection slag of the present invention agent chemical composition not only to molten iron, metallographic structure, mechanical performance and casting quality without bad
Affect, moreover it is possible to improve the quality of foundry goods.
Specific embodiment
Embodiment 1
A kind of molten iron collection slag agent, is made up by weight of following component, quick lime 5, perlite 50, straw ash 1, periclase 4,
Cobalt oxide 0.2, zeolite powder 3, sepiolite powder 6, chrome green 0.4, hollow glass micropearl powder 6, chromium carbide 0.1, modified aluminium alum
Soil 4, wherein modified bauxite is 10 with chrome green mass ratio:1, straw ash is 10 with chromium carbide mass ratio:1.
Embodiment 2
A kind of molten iron collection slag agent, is made up by weight of following component, quick lime 8, perlite 60, straw ash 3, periclase 6,
Cobalt oxide 0.4, zeolite powder 5, sepiolite powder 9, chrome green 0.6, hollow glass micropearl powder 10, chromium carbide 0.3, modified aluminium alum
Soil 6, wherein modified bauxite is 10 with chrome green mass ratio:1, straw ash is 10 with chromium carbide mass ratio:1.
Embodiment 3
A kind of molten iron collection slag agent, is made up by weight of following component, quick lime 6, perlite 55, straw ash 2, periclase 5,
Cobalt oxide 0.3, zeolite powder 4, sepiolite powder 7, chrome green 0.5, hollow glass micropearl powder 8, chromium carbide 0.2, modified aluminium alum
Soil 5, wherein modified bauxite is 10 with chrome green mass ratio:1, straw ash is 10 with chromium carbide mass ratio:1.
The preparation method of above example is:
（1）Each raw material is crossed respectively 120 mesh sieves；
（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 mixers, are stirred with 150r/min rotating speeds, by chrome green with it is modified
Then bauxite in being then added to batch mixer, 30min is stirred with 200r/min rotating speeds first at 138-140 DEG C after uniform mixing,
It is put into drying baker to be dried, drying temperature is 200 DEG C, naturally cools 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.
Present invention collection slag agent physical property is as follows：
Table 1
| The coefficient of expansion | Mohs' hardness | Proportion（g/cm³） | Fusion temperature（℃） | |
| 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, it is ensured that steady, the proportion symbol of nodularization process
Standardization.
Contrast 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 is：The modified bauxite that differs only in embodiment 2 is 9 with chrome green mass ratio:1, change
The amount of property bauxite is constant；
Comparative example 2 is：The straw ash that differs only in embodiment 2 is 11 with chromium carbide mass ratio:1, the amount of chromium carbide is constant；
Comparative example 3 is：With differing only in without modified bauxite for embodiment 2, the amount of chrome green is constant.
As can be seen from Table 2, be modified bauxite and chrome green mass ratio with straw ash with chromium carbide mass ratio to slag
Amount and iron loss affect larger, and the presence or absence of the bauxite that is modified affects very big to the quantity of slag and iron loss.
Claims (5)
1. a kind of molten iron collection slag agent, it is characterised in that be made up of following component by weight, quick lime 5-8, perlite 50-
60th, 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 for 10:1, straw ash is 10 with chromium carbide mass ratio:1.
2. a kind of molten iron collection slag agent according to claim 1, it is characterised in that the preparation method of the modified bauxite
For：
1. bauxite is pressurizeed at 120-125 DEG C, moulding pressure is 1.5MPa, pressurize 15min, and aluminium is then added again
The ethylene glycol of alumina quality 5%, is ground, and milling time is 30min, and grinding temperature is 28 DEG C, is then dried；
2. add the hydrogen peroxide of its quality 1.5% in the bauxite after above-mentioned process, after stirring, be heated to 80-85 DEG C,
After insulation 1-2h, it is dried, you can.
3. a kind of molten iron collection slag agent according to claim 1, it is characterised in that the preparation method of the straw ash is：Will
Wheat stalk presses 3 with rice straw:After the mixing of 1 mass ratio, burn completely to ashes, ashes are smashed to pieces uniformly, obtain final product stalk
Ash.
4. a kind of molten iron collection slag agent according to claim 1, it is characterised in that the preparation side of described molten iron collection slag agent
Method, comprises the following steps：
（1）Each raw material is crossed respectively 120 mesh sieves；
（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 mixers, are stirred with 150r/min rotating speeds, by chrome green with it is modified
Then bauxite in being then added to batch mixer, 30min is stirred with 200r/min rotating speeds first at 138-140 DEG C after uniform mixing,
It is put into drying baker to be dried, drying temperature is 200 DEG C, naturally cools to room temperature, obtains finished product, weight packaging.
5. a kind of molten iron collection slag agent according to claim 1, it is characterised 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 true CN106636550A (en) | 2017-05-10 |
| CN106636550B 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 |
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| CN (1) | CN106636550B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032959A (en) * | 1987-11-04 | 1989-05-17 | 唐国进 | Floss collecting agent for temperature isolation |
| CN103495714A (en) * | 2013-10-23 | 2014-01-08 | 武汉钢铁(集团)公司 | Peritectic steel covering slag containing cobaltous oxide and preparation method thereof |
| 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
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032959A (en) * | 1987-11-04 | 1989-05-17 | 唐国进 | Floss collecting agent for temperature isolation |
| CN103495714A (en) * | 2013-10-23 | 2014-01-08 | 武汉钢铁(集团)公司 | Peritectic steel covering slag containing cobaltous oxide and preparation method thereof |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN106636550B (en) | 2019-03-22 |
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Granted publication date: 20190322 Termination date: 20201024 |
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