CN108396110A - Converter slagging agent taking cyclone well sediment as raw material and preparation method thereof - Google Patents
Converter slagging agent taking cyclone well sediment as raw material and preparation method thereof Download PDFInfo
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- CN108396110A CN108396110A CN201710064763.6A CN201710064763A CN108396110A CN 108396110 A CN108396110 A CN 108396110A CN 201710064763 A CN201710064763 A CN 201710064763A CN 108396110 A CN108396110 A CN 108396110A
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- temperature
- magnetic separation
- mud
- slagging agent
- converter
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- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000002994 raw material Substances 0.000 title claims abstract description 11
- 239000013049 sediment Substances 0.000 title abstract 2
- 239000000463 material Substances 0.000 claims abstract description 70
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 34
- 238000007885 magnetic separation Methods 0.000 claims abstract description 18
- 239000011230 binding agent Substances 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 15
- 239000002918 waste heat Substances 0.000 claims abstract description 11
- 239000000440 bentonite Substances 0.000 claims abstract description 10
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 10
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 239000002699 waste material Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 11
- 238000009749 continuous casting Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 6
- 230000005291 magnetic effect Effects 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 239000008188 pellet Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 32
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract description 17
- 229910052742 iron Inorganic materials 0.000 abstract description 16
- 229910000831 Steel Inorganic materials 0.000 abstract description 12
- 239000010959 steel Substances 0.000 abstract description 12
- 239000002893 slag Substances 0.000 abstract description 11
- 239000000203 mixture Substances 0.000 abstract description 6
- 238000003723 Smelting Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 238000005266 casting Methods 0.000 abstract 2
- 235000013980 iron oxide Nutrition 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 238000009491 slugging Methods 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 3
- 239000010436 fluorite Substances 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910001570 bauxite Inorganic materials 0.000 description 2
- 238000007499 fusion processing Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 229910001515 alkali metal fluoride Inorganic materials 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- IGHXQFUXKMLEAW-UHFFFAOYSA-N iron(2+) oxygen(2-) Chemical compound [O-2].[Fe+2].[Fe+2].[O-2] IGHXQFUXKMLEAW-UHFFFAOYSA-N 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- C21C7/076—Use of slags or fluxes as treating agents
-
- 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
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A converter slag melting agent taking cyclone well sediment as a raw material and a preparation method thereof comprise the following components: 70-80% of cyclone well magnetic separation material, 8-15% of binder and 10-20% of bentonite; the magnetic separation material of the cyclone well is iron oxide and simple substance iron, and the adhesive is waste plastic product. Separating out iron oxides and elementary iron in the precipitated mud by adopting magnetic separation equipment; drying the magnetically-separated materials by using the waste heat of the casting blank; crushing the dried material and the waste plastic product which is melted and condensed into blocks; mixing the materials according to the proportion of 70-80 wt% of the dried material, 10-20 wt% of bentonite and 8-15 wt% of a binder, and adding water into the mixture to stir and mix uniformly; pressing the mixture into material balls with the diameter of 30-50 mm by a ball press; and (4) baking the material balls at low temperature in three stages, and cooling to room temperature after baking. The invention utilizes the waste resources of steel plants and the waste heat of casting blanks, can accelerate the earlier stage slagging speed of the converter, increase the yield of molten steel, reduce the smelting cost and realize the reasonable utilization of plastic domestic garbage.
Description
Technical field
The invention belongs to steelmaking feed field, more particularly to it is a kind of using whirling well sink mud as the converter slagging agent of raw material and its
Preparation method.
Background technology
With the high-efficiency reform of converter, it is desirable that the slag charges such as lime and dolomite that converter is added in Primary period can be
The clinker with certain fluidity and basicity is generated in short time.To reach this purpose, need to add certain slagging agent rush
It is fused into slag into slag charge.Past, the burn-off rate of clinker improved by the way that fluorite is added in each steel mill, but since fluorite is not only right
Environment has very big pollution, while can also have very strong corrosion function to the furnace lining of converter, and the cost for repairing resistance to material is caused to occupy height not
Under.With the enhancing of people's environmental consciousness and in order to utmostly reduce production cost, fluorite is as slagging agent gradual quilt
It eliminates.Some producers begin to use red bauxite or bauxite as slagging agent, but in clinker alumina content increase to molten iron
The removal of middle phosphorus is unfavorable, is easy to cause the viscous rifle of oxygen rifle and petticoat pipe dross after accumulating a large amount of aluminium oxide in clinker in addition, increases
Subsequent operation intensity.From the point of view of slugging mechanism, the iron oxide in slag can accelerate the dissolving of lime, be the key that Fast Slag Melting,
The iron oxide in initial stage slag can also be conducive to quickly remove the phosphorus in molten iron simultaneously, therefore with iron oxide iron as main component
Matter slagging agent is more satisfactory slagging agent.It is analyzed from the angle of resource reutilization, although there are a large amount of iron oxide in steel mill
Raw material such as bof sludge and steel rolling iron sheet are obtained for and make full use of, but still have raw material of the part containing iron oxide such as continuous casting to revolve
Sufficient utilization is not yet received in the heavy mud of stream well deposition.
The patent of invention of Publication No. CN 1176311A discloses " a kind of ferric scale fluxing and dissolving agent and its manufacturer
Method " is made using the iron scale, converter mud and sodium silicate binder of steel rolling, although the slagging agent can rise well
It is acted on to slugging, but since granularity is very thin after the drying for converter mud, mouldability is bad in process, uses process
Middle pulverization rate is higher, is lost in seriously with furnace gas after converter is added.104232841 A of CN disclose " a kind of dephosphorization slagging agent and its
Preparation method " can lead to the acid in slagging agent since the iron oxide dispensing wherein contained derives from the crushed material of iron ore
Property substance increases brings difficulty to the raising of converter slag-making basicity.CN 200610084905.7 provides " a kind of copper smelter slag
Novel slagging agent " is that slagging agent is made using the method for electric smelting in mixture that lime and Iron Ore Powder form, made of this method
Although slagging agent ingredient is uniform, cost is higher, and application value is relatively low in the industrial production.
Continuous casting whirling well settled sludge is that the iron scale generated in two cold cooling procedures by strand and covering slag solidify
The mixture of the slag crust composition formed afterwards, the compound containing a large amount of iron oxide and reduction slag fusing point, but iron oxide contains
Measure the more of no steel rolling iron sheet, along with containing sodium, fluorine plasma, therefore utilization the difficulty of continuous casting iron sheet than bof sludge with
Steel rolling iron sheet is big, is not effectively used, most of to be abandoned as industrial waste.In order to make this part waste resource
It is fully used, a kind of mud is sunk as the converter slagging agent and production method of raw material using whirling well to propose.
Invention content
It is an object of the invention to make full use of the waste resource of steel mill and strand waste heat, accelerate the slugging speed of converter early period
Degree is conducive to dephosphorization of molten iron early period, increases molten steel recovery rate, reduces smelting cost, and realize the reasonable of the day refuses such as polybag
It utilizes.
For this purpose, the technical solution that the present invention is taken is：
A kind of to sink mud as the converter slagging agent of raw material using whirling well, the converter slagging agent component wt% is：Whirling well magnetic
Select object 70~80%, binder 8~15%, bentonite 10~20%；Wherein, whirling well magnetic separation object is irony oxide and simple substance
Iron, two kinds of substance total contents of irony oxide and fe account for the 95% of magnetic separation object, remaining is impurity；Binder is used through broken
Scrapped plastic products.
A kind of to sink mud as the preparation method of the converter slagging agent of raw material using whirling well, specific method and step are：
(1) mud that sinks is collected：The heavy mud for being deposited on whirling well bottom is collected using grab bucket.
(2) heavy mud magnetic separation：The heavy mud collected under whirling well contains a certain amount of containing alkali metal oxide and fluoride
Crystallizer protecting residue, this moieties can corrode converter lining after entering converter, therefore must removal.It is aoxidized according to containing alkali metal
The covering slag of object and fluoride does not have magnetism, and the iron scale and fe in heavy mud have very strong ferromagnetic spy
Point carries out magnetic separation using magnetic plant to heavy mud, by heavy mud irony oxide and fe select.
(3) it dries：The ferriferous oxide and fe material magneticly elected contains a large amount of water, needs to carry out at drying it
Reason.In order to reduce drying energy cost, continuous casting billet waste heat is recycled indirectly, therefore carried out to the material magneticly elected using strand waste heat
The material magneticly elected is placed on baking pallet by drying, the pallet equipped with material, which is then placed in temperature, is more than 200 DEG C
High-temperature continuous casting blank above dried, the material requirement dried its moisture is less than 1%.
(4) it is crushed：Material is broken：The material of drying is subjected to break process, it is desirable that ratio of the material particular diameter in 2~10mm
It is 80%, the ratio less than 2mm is less than 5%, and the ratio more than 10mm is less than 15%.
Waste plastic processing：Scrapped plastic products are melted at a high temperature of 200~300 DEG C using the waste heat of strand, so
After be condensed into bulk, then be broken into the particle that grain size is 2~10mm by block is condensed.
(5) dispensing：In 70~80wt% of material drying, 10~20wt% of bentonite, 8~15wt% of binder ratio into
Row dispensing.
(6) mixing：The material prepared is put into blender and is stirred mixing, adds water during puddling into material,
Amount of water is the 5~10% of volume of material.
(7) pressure ball：The material of mixing is pressed into the material ball of a diameter of 30~50mm by ball press.
(8) low-temperature bake：In order to prevent during low-temperature bake, rupture dusting occurs for material ball, influences use quality, low
Temperature baking is divided into three phases progress：Material ball is toasted 5~8h by the first stage at a temperature of 80~100 DEG C, by internal water
Divide slowly removal；Temperature is increased to 200~300 DEG C by second stage, toasts 1~3h；Temperature is increased to 400 by the phase III~
600 DEG C, toast 2~4h, the intensity of fortifier pellet.
(9) finished product is collected：Good material ball temperature to be baked is cooled to room temperature, and prepared by slagging agent completes.
The converter slugging that the present invention is not yet received the reality made full use of and applies at present for the heavy mud of continuous casting whirling well
It is insufficient existing for agent, it is proposed that it is a kind of that mud is sunk as the converter slagging agent and production method of base-material using whirling well, therefore can obtain such as
Lower advantageous effect：
1, accelerate the slugging speed of converter early period, be conducive to dephosphorization of molten iron early period；
2, the irony fluxing agent being added is conducive to increase the recovery rate of molten steel, reduces steel-making cost；
3, the waste resource of steel mill and strand waste heat can be made full use of, deeply taping the latent power reduces the latent of production cost
Power；
4, the day refuses such as partly plastic rubbish especially polybag in life can rationally be utilized, reduces environment
Pollution and processing work amount.
Description of the drawings
Fig. 1 is converter slagging agent preparation process flow block diagram.
Specific implementation mode
Embodiment 1：
Sink mud using whirling well is as the converter slagging agent component wt% of base-material：Whirling well magnetic separation object 70%, binder 10%,
Bentonite 20%, irony oxide and fe total content account for the 95% of magnetic separation object, and binder is used through broken waste plastic
Product.Slagging agent preparation process flow is as shown in Figure 1, specific preparation method and step are：
First the grab bucket of the heavy mud in whirling well is collected, is selected irony oxide and fe by the method for magnetic separation,
It will select after material is put into pallet, and pallet is placed on two cold houses export to primary fire and cut this some fragment position temperature and be
The top of 250 DEG C of high-temperature continuous casting blank transportation section is to its drying and processing.The material of drying is broken into 2~10mm's of grain size later
Ratio is 80%, and the ratio less than 2mm is 4%, the particle that the ratio more than 10mm is 16%.It will be used simultaneously as binder
Scrapped plastic products at a high temperature of 250 DEG C melt processed, the heat needed for fusion process uses the waste heat of strand, then cold
Bulk is congealed into, block will be condensed later and be broken into the particle that grain size is 4mm.80% is accounted for material drying again, bentonite accounts for 12%, glues
The mass percent that knot agent accounts for 8% prepare and carries out mixing processing to it, and material is added into material during puddling
Material is pressed into the material ball of a diameter of 35mm after material mixing by the water of volume 6% using ball press.By three, material ball point
Stage is toasted, and material ball is toasted 7h by the first stage at a temperature of 90 DEG C, its internal moisture is slowly removed；Second
Stage carries out baking 2h at 250 DEG C, the transition stage as the phase III；Phase III toasts 2h at 500 DEG C, as material ball
The strength reinforcing stage.When the good material ball temperature of low-temperature bake is down to room temperature, it is collected.
Embodiment 2：Sink mud using whirling well is as the converter slagging agent component wt% of base-material：Whirling well magnetic separation object 80% glues
Agent 8%, bentonite 12% are tied, irony oxide and fe total content account for the 95% of magnetic separation object, and binder uses warp to be crushed
Scrapped plastic products.Slagging agent preparation process flow is as shown in Figure 1, specific preparation method and step are：
First the grab bucket of the heavy mud in whirling well is collected, is selected irony oxide and fe by the method for magnetic separation.
To select after material is put into pallet, by pallet be placed on secondary fire cut terminal to strand it is offline between this section of continuous casting billet transmit
The top of section, to its drying and processing.The ratio that the material of drying is broken into 2~10mm of grain size later accounts for 80%, less than 2mm's
Ratio 3%, the particle that the ratio more than 10mm is 17%.Simultaneously by the scrapped plastic products used as binder at 280 DEG C
At a high temperature of melt processed, the heat needed for fusion process uses the waste heat of strand, is then condensed into bulk, will condense block later
It is broken into the particle that grain size is 8mm.It is prepared with material drying 75%, bentonite 15%, binder 10% again, and is mixed
Even processing is added the water of volume of material 8% into material during puddling, is suppressed material using ball press after material mixing
At the material ball of a diameter of 45mm.Material ball point three phases are toasted, temperature of the first stage by material ball at 95 DEG C
Lower baking 8h, slowly by its internal moisture removal；Second stage carries out baking 3h at 220 DEG C, excessive as the phase III
Stage；Phase III carries out baking 4h at 470 DEG C, as the material ball strength reinforcing stage.Wait for the good material ball temperature of low-temperature bake
When degree is down to room temperature, it is collected.
Claims (2)
1. a kind of sinking mud as the converter slagging agent of raw material using whirling well, which is characterized in that the converter slagging agent component wt% is：
Whirling well magnetic separation object 70~80%, binder 8~15%, bentonite 10~20%；Wherein, whirling well magnetic separation object aoxidizes for irony
Object and fe, two kinds of substance total contents of irony oxide and fe account for the 95% of magnetic separation object, remaining is impurity；Binder is adopted
With through broken scrapped plastic products.
2. a kind of sinking mud as the preparation method of the converter slagging agent of raw material using whirling well as described in claim 1, it is characterised in that：
(1) mud that sinks is collected：The heavy mud for being deposited on whirling well bottom is collected using grab bucket；
(2) heavy mud magnetic separation：Magnetic separation is carried out to heavy mud using magnetic plant, by heavy mud irony oxide and fe select；
(3) it dries：The material magneticly elected is dried using strand waste heat, i.e., the material magneticly elected is placed on baking pallet
On, then the pallet equipped with material is placed in above high-temperature continuous casting blank of the temperature more than 200 DEG C and is dried, has been dried
Its moisture of material requirement is less than 1%；
(4) it is crushed：Material is broken：The material of drying is subjected to break process, it is desirable that ratio of the material particular diameter in 2~10mm be
80%, the ratio less than 2mm is less than 5%, and the ratio more than 10mm is less than 15%；
Waste plastic processing：Scrapped plastic products are melted at a high temperature of 200~300 DEG C using the waste heat of strand, it is then cold
Bulk is congealed into, then the particle that grain size is 2~10mm is broken by block is condensed；
(5) dispensing：Matched in the ratio of 70~80wt% of material drying, 10~20wt% of bentonite, 8~15wt% of binder
Material；
(6) mixing：The material prepared is put into blender and is stirred mixing, adds water during puddling into material, adds water
Amount is the 5~10% of volume of material；
(7) pressure ball：The material of mixing is pressed into the material ball of a diameter of 30~50mm by ball press；
(8) low-temperature bake：Low-temperature bake is divided into three phases progress：First stage is by material ball at a temperature of 80~100 DEG C
5~8h is toasted, internal moisture is slowly removed；Temperature is increased to 200~300 DEG C by second stage, toasts 1~3h；Third rank
Temperature is increased to 400~600 DEG C by section, toasts 2~4h, the intensity of fortifier pellet；
(9) finished product is collected：Good material ball temperature to be baked is cooled to room temperature, and prepared by slagging agent completes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710064763.6A CN108396110B (en) | 2017-02-05 | 2017-02-05 | Converter slagging agent taking cyclone well sediment as raw material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710064763.6A CN108396110B (en) | 2017-02-05 | 2017-02-05 | Converter slagging agent taking cyclone well sediment as raw material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108396110A true CN108396110A (en) | 2018-08-14 |
| CN108396110B CN108396110B (en) | 2019-10-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110157860A (en) * | 2019-05-14 | 2019-08-23 | 鞍钢股份有限公司 | Refining slag for purification and dealumination of ferrosilicon and preparation method thereof |
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