CN109971947A - A kind of cooled agglomerated pellet and its preparation and application - Google Patents
A kind of cooled agglomerated pellet and its preparation and application Download PDFInfo
- Publication number
- CN109971947A CN109971947A CN201910310194.8A CN201910310194A CN109971947A CN 109971947 A CN109971947 A CN 109971947A CN 201910310194 A CN201910310194 A CN 201910310194A CN 109971947 A CN109971947 A CN 109971947A
- Authority
- CN
- China
- Prior art keywords
- iron
- weight percent
- agglomerated pellet
- cooled agglomerated
- converter
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/244—Binding; Briquetting ; Granulating with binders organic
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/248—Binding; Briquetting ; Granulating of metal scrap or alloys
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of cooled agglomerated pellet and its preparation and application, the cooled agglomerated pellet includes ash before iron-smelting furnace, it is grey before converter, revolving furnace mud fine grained, Iron concentrate, calcium oxide powder, binder and self-generating exothermal agent, grey weight percent is 6%~8% before the iron-smelting furnace, grey weight percent is 4%~6% before the converter, the fine grain weight percent of the revolving furnace mud is 60%~70%, the weight percent of the Iron concentrate is 10%~12%, the weight percent of the calcium oxide powder is 11%~15%, the weight percent of the binder is 3%~4%, the weight percent of the self-generating exothermal agent is 2%~3%.The solid waste such as ash, revolving furnace mud fine grained, Iron concentrate before ash, converter before iron-smelting furnace are pressed into after cooled agglomerated pellet and are directly added into converter recycling by the present invention, reduce the waste of resource and the influence to environment, improve utilization rate of solid waste, it realizes efficient circulation economic interests, has pushed the sustainable development of industry.
Description
Technical field
The invention belongs to solid waste technical field more particularly to metallurgical waste process field, in particular to one kind are cold
Gu pelletizing and its preparation and application.
Background technique
During smelting iron and steel, it is useless that a large amount of industrial solid can be generated in the production processes such as sintering, ironmaking, steel-making
Gurry, these secondary ferrous materials are larger since all iron content fluctuates, and are clinkers, return to stock yard supplying sintering to sinter
Yield and quality will generate it is certain influence, pour into cinder field stacking, be easy to produce fugitive dust again during transport and mixed processing,
Ecological environment is not only seriously affected, is more resulted in waste of resources.Therefore, how reasonable employment resource, reduction energy consumption, reduction are to environment
Pollution, making industry is China's steel industry urgent problem in sustainable development.
Dedusting ash, steel-making dedusting ash, the fine grain method of revolving furnace mud are to be directly added into match before processing iron-smelting furnace at present
Hopper enters blast furnace ironmaking, and this method resource utilization is low, while can also during the stacking of iron content secondary material, transport etc.
Bring a series of environmental issues.
Summary of the invention
For deficiency present in background technique, the present invention carries out targeted design, provide a kind of cooled agglomerated pellet and its
The solid waste such as ash, revolving furnace mud fine grained, Iron concentrate before ash, converter before iron-smelting furnace are pressed into cold by preparation and application
Gu being directly added into converter recycling after pelletizing, the waste of resource and the influence of environment are reduced, improves utilization rate of solid waste, it is real
Existing efficient circulation economic interests, have pushed the sustainable development of industry.
To achieve the above object, the invention provides the following technical scheme:
A kind of cooled agglomerated pellet, including ash before iron-smelting furnace, ash before converter, revolving furnace mud fine grained, Iron concentrate, calcium oxide powder,
Binder and self-generating exothermal agent, grey weight percent is 6%~8% before the iron-smelting furnace, grey before the converter
Weight percent is 4%~6%, and the fine grain weight percent of the revolving furnace mud is 60%~70%, the Iron concentrate
Weight percent be 10%~12%, the weight percent of the calcium oxide powder is 11%~15%, the binder
Weight percent be 3%~4%, the weight percent of the self-generating exothermal agent is 2%~3%.
Grey all iron content is 57.32% before the iron-smelting furnace, and grey all iron content is 26.17% before converter, is turned
The all iron content of furnace mud particle is 61.7%, water content 40%, and all iron content of Iron concentrate is 49.52%.
The binder is mixed using starch and water, has cementation, and starch is cheap, without to turning
Furnace makes steel harmful impurity.
The self-generating exothermal agent is mixed using iron powder, silicon powder and calcium oxide powder, and exposed be oxidized in air can be sent out
A large amount of heat out, is stirred with various raw materials, can make pelletizing during spontaneous heating, moisture content is down to by 15%
5% hereinafter, and intensity also enhance therewith.
A kind of preparation method of cooled agglomerated pellet, comprising the following steps:
S1: ash, revolving furnace mud fine grained, Iron concentrate and calcium oxide before ash, converter are weighed before the iron-smelting furnace of weight percent
Powder is separately added into biaxial rneader, is mixing uniformly to form basic mixture；
S2: the basic mixture of S1 is transferred to disintegration cabin and stands 24 hours；
S3: sequentially adding the binder and self-generating exothermal agent of corresponding weight percent in the basic mixture after resolution, warp
After being mixing uniformly to form total material mixture twice；
S4: ball press is added in the total material mixture of S3, is pressed into metal ball, cooled agglomerated pellet is made.
The molding key of cooled agglomerated pellet first is that stirring, mixing time is too short, and to will cause material distributing homogeneity poor, closely knit
Degree is insufficient, not easily molded；Mixing time is too long it will cause the excessive rear required moulding moisture decline of compactness, eventually leads to material
Overly moist, energy consumption increase, the decline of productivity.
So mixing time in step S1 is 15~20min, total mixing time control in step S3 15~
20min, and stir evenly in two times, so that mixture has good uniformity, density and plasticity, created for molding advantageous
Condition.
A kind of application method of cooled agglomerated pellet, is added converter after cooled agglomerated pellet is transported to converter high hopper, as turn
The coolant and slag former of furnace steel-making.
Design in this way, a kind of cooled agglomerated pellet of the invention and its preparation and application, compared with prior art,
Have it is following the utility model has the advantages that
1, the cooled agglomerated pellet and its preparation and application, by ash before iron-smelting furnace, ash before converter, revolving furnace mud fine grained,
The solid waste such as Iron concentrate, which are pressed into after cooled agglomerated pellet, is directly added into converter recycling, as the coolant and slag former of steel-making,
Accelerate slagging speed, improves the de- P in smelting process, takes off S effect, reduce the waste of resource and the influence to environment, improve solid
Metal utilization in body waste realizes efficient circulation economic interests.
2, it is useless to effectively reduce the solids such as stokehold ash, revolving furnace mud particulate matter for the cooled agglomerated pellet and its preparation and application
Waste of the gurry to resource and the influence to environment, have driven the development of upstream and downstream related industry, to perfect local industrial pattern,
Promote socio-economic development and environmental protection that there is positive meaning.
3, the cooled agglomerated pellet and its preparation and application cancel stoving process after pressure ball, using self-generating exothermal agent technology, no
It reduced by only energy consumption, and improve balling ratio, meet the technical need of high-efficiency resource recycling, be Circular Economy, section
The production model of energy emission reduction provides the foundation, and has pushed the sustainable development of industry.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment 1
By ash, 60% revolving furnace mud fine grained, 12% Iron concentrate and 11% oxygen before ash, 4.5% converter before 7.5% iron-smelting furnace
Change calcium powder and biaxial rneader is added, is mixing uniformly to form basic mixture；The basic mixture is transferred to disintegration cabin and stands 24
Hour, it is fused together various materials；3% binder and 2% spontaneous heating are separately added into basic mixture after resolution
Agent stirs total 15min in two times, is mixing uniformly to form total material mixture；Ball press, compacting is added in the total material mixture
At metal ball, cooled agglomerated pellet is finally made.Converter is added after the cooled agglomerated pellet is transported to converter high hopper, is refined as converter
The coolant and slag former of steel use.
Embodiment 2
By ash, 65% revolving furnace mud fine grained, 10% Iron concentrate and 15% oxygen before ash, 4.5% converter before 7.5% iron-smelting furnace
Change calcium powder and biaxial rneader is added, is mixing uniformly to form basic mixture；The basic mixture is transferred to disintegration cabin and stands 24
Hour, it is fused together various materials；4% binder and 3% spontaneous heating are separately added into basic mixture after resolution
Agent stirs total 15min in two times, is mixing uniformly to form total material mixture；Ball press, compacting is added in the total material mixture
At metal ball, cooled agglomerated pellet is finally made.Converter is added after cooled agglomerated pellet is transported to converter high hopper, as pneumatic steelmaking
Coolant and slag former use.The fine grain proportion of revolving furnace mud is improved in the embodiment, since revolving furnace mud is fine grain complete
Iron content and water content are higher, so suitably reducing the proportion of Iron concentrate, increase matching for calcium oxide powder, binder and self-generating exothermal agent
Than.
The above is only used to illustrate the technical scheme of the present invention and not to limit it, and those of ordinary skill in the art are to this hair
The other modifications or equivalent replacement that bright technical solution is made, as long as it does not depart from the spirit and scope of the technical scheme of the present invention,
It is intended to be within the scope of the claims of the invention.
Claims (8)
1. a kind of cooled agglomerated pellet, it is characterised in that: the cooled agglomerated pellet includes ash, revolving furnace mud before ash, converter before iron-smelting furnace
Fine grained, Iron concentrate, calcium oxide powder, binder and self-generating exothermal agent, before the iron-smelting furnace grey weight percent be 6%~
8%, grey weight percent is 4%~6% before the converter, and the fine grain weight percent of the revolving furnace mud is
60%~70%, the weight percent of the Iron concentrate is 10%~12%, and the weight percent of the calcium oxide powder is
11%~15%, the weight percent of the binder is 3%~4%, and the weight percent of the self-generating exothermal agent is 2%
~3%.
2. a kind of cooled agglomerated pellet according to claim 1, it is characterised in that: grey all iron content is before the iron-smelting furnace
57.32%, grey all iron content is 26.17% before converter, and all iron content of revolving furnace mud particle is 61.7%, and water content is
40%, all iron content of Iron concentrate is 49.52%.
3. a kind of cooled agglomerated pellet according to claim 1, it is characterised in that: the binder is mixed using starch and water
It forms.
4. a kind of cooled agglomerated pellet according to claim 1, it is characterised in that: the self-generating exothermal agent uses iron powder, silicon powder
It is mixed with calcium oxide powder.
5. a kind of cooled agglomerated pellet preparation method according to claim 1, it is characterised in that: the following steps are included:
S1: ash, revolving furnace mud fine grained, Iron concentrate and calcium oxide powder before ash, converter are weighed before the iron-smelting furnace of weight percent, is divided
Basic mixture Jia Ru not be mixing uniformly to form in biaxial rneader；
S2: the basic mixture of S1 is transferred to disintegration cabin and stands 24 hours；
S3: the binder and self-generating exothermal agent of corresponding weight percent are sequentially added in the basic mixture after resolution, by two
It is secondary to be mixing uniformly to form total material mixture；
S4: ball press is added in the total material mixture of S3, is pressed into metal ball, cooled agglomerated pellet is made.
6. a kind of cooled agglomerated pellet preparation method according to claim 5, it is characterised in that: the mixing time in step S1 is
15~20min.
7. a kind of cooled agglomerated pellet preparation method according to claim 5, it is characterised in that: total mixing time in step S3
For 15~20min.
8. a kind of application method of cooled agglomerated pellet preparation method according to claim 5, it is characterised in that: by cooled agglomerated pellet
Converter is added after transport to converter high hopper, the coolant and slag former as pneumatic steelmaking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910310194.8A CN109971947A (en) | 2019-04-17 | 2019-04-17 | A kind of cooled agglomerated pellet and its preparation and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910310194.8A CN109971947A (en) | 2019-04-17 | 2019-04-17 | A kind of cooled agglomerated pellet and its preparation and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109971947A true CN109971947A (en) | 2019-07-05 |
Family
ID=67085003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910310194.8A Withdrawn CN109971947A (en) | 2019-04-17 | 2019-04-17 | A kind of cooled agglomerated pellet and its preparation and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109971947A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111961868A (en) * | 2020-08-07 | 2020-11-20 | 阳春新钢铁有限责任公司 | Digestion preparation method of converter waste sludge |
| CN112174470A (en) * | 2020-09-30 | 2021-01-05 | 宝钢湛江钢铁有限公司 | Treatment method of cold-rolled oily sludge |
| CN112725617A (en) * | 2020-12-24 | 2021-04-30 | 广西柳钢环保股份有限公司 | Converter fly ash homogenization treatment ball pressing method |
| CN112784398A (en) * | 2020-12-08 | 2021-05-11 | 阳春新钢铁有限责任公司 | Iron-containing material resource utilization method based on TFe element balance model |
| CN113005260A (en) * | 2021-04-19 | 2021-06-22 | 武汉钢铁有限公司 | Converter composite heat generating agent and preparation method thereof |
| CN113337707A (en) * | 2021-06-07 | 2021-09-03 | 阳春新钢铁有限责任公司 | Method for preparing cold-pressed balls for iron-making blast furnace and improving utilization rate of waste |
| CN114410963A (en) * | 2022-01-26 | 2022-04-29 | 宝钢德盛不锈钢有限公司 | Binder for acid-washed sludge and gravity ash cooled agglomerated pellets and preparation method thereof |
| CN116283073A (en) * | 2022-11-25 | 2023-06-23 | 阳春新钢铁有限责任公司 | Steel mill solid waste treatment method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316531A (en) * | 2001-02-26 | 2001-10-10 | 莱钢集团矿山建设有限公司 | Cold-consolidated rusted cake containing iron dust |
| CN1381598A (en) * | 2001-04-18 | 2002-11-27 | 赵连杰 | Method for recycling steel smelting and rolling by-products containing iron oxide components |
| CN101709341A (en) * | 2009-11-27 | 2010-05-19 | 北京科技大学 | Method for treating iron-containing waste materials in iron and steel plant |
| CN104775023A (en) * | 2015-05-07 | 2015-07-15 | 湖南华菱湘潭钢铁有限公司 | Manufacturing method for cold-pressed pellets for steelmaking |
| CN109338101A (en) * | 2018-10-29 | 2019-02-15 | 嘉峪关宏电铁合金有限责任公司 | A kind of method that coal-pressing ball is dried certainly |
-
2019
- 2019-04-17 CN CN201910310194.8A patent/CN109971947A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316531A (en) * | 2001-02-26 | 2001-10-10 | 莱钢集团矿山建设有限公司 | Cold-consolidated rusted cake containing iron dust |
| CN1381598A (en) * | 2001-04-18 | 2002-11-27 | 赵连杰 | Method for recycling steel smelting and rolling by-products containing iron oxide components |
| CN101709341A (en) * | 2009-11-27 | 2010-05-19 | 北京科技大学 | Method for treating iron-containing waste materials in iron and steel plant |
| CN104775023A (en) * | 2015-05-07 | 2015-07-15 | 湖南华菱湘潭钢铁有限公司 | Manufacturing method for cold-pressed pellets for steelmaking |
| CN109338101A (en) * | 2018-10-29 | 2019-02-15 | 嘉峪关宏电铁合金有限责任公司 | A kind of method that coal-pressing ball is dried certainly |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111961868A (en) * | 2020-08-07 | 2020-11-20 | 阳春新钢铁有限责任公司 | Digestion preparation method of converter waste sludge |
| CN112174470A (en) * | 2020-09-30 | 2021-01-05 | 宝钢湛江钢铁有限公司 | Treatment method of cold-rolled oily sludge |
| CN112784398A (en) * | 2020-12-08 | 2021-05-11 | 阳春新钢铁有限责任公司 | Iron-containing material resource utilization method based on TFe element balance model |
| CN112725617A (en) * | 2020-12-24 | 2021-04-30 | 广西柳钢环保股份有限公司 | Converter fly ash homogenization treatment ball pressing method |
| CN113005260A (en) * | 2021-04-19 | 2021-06-22 | 武汉钢铁有限公司 | Converter composite heat generating agent and preparation method thereof |
| CN113005260B (en) * | 2021-04-19 | 2022-09-27 | 武汉钢铁有限公司 | Converter composite heat generating agent and preparation method thereof |
| CN113337707A (en) * | 2021-06-07 | 2021-09-03 | 阳春新钢铁有限责任公司 | Method for preparing cold-pressed balls for iron-making blast furnace and improving utilization rate of waste |
| CN114410963A (en) * | 2022-01-26 | 2022-04-29 | 宝钢德盛不锈钢有限公司 | Binder for acid-washed sludge and gravity ash cooled agglomerated pellets and preparation method thereof |
| CN116283073A (en) * | 2022-11-25 | 2023-06-23 | 阳春新钢铁有限责任公司 | Steel mill solid waste treatment method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109971947A (en) | A kind of cooled agglomerated pellet and its preparation and application | |
| CN104046773B (en) | A kind of dedusting steel-smelting converter ash produces cooled agglomerated pellet processing method | |
| CN100507013C (en) | Method for directly producing ferrochromium from chrome ore powder and coal | |
| CN101353708B (en) | Nickel iron smelting process with nickel oxide ore and stainless steel production wastes as raw materials | |
| CN101270410A (en) | Cold bonded pellet and method of producing the same | |
| CN103320607B (en) | A kind of cold-consolidated ball and preparation method thereof | |
| CN101892382B (en) | Method for extracting high-content nickel, chromium and iron from stainless steel dust | |
| CN109055731B (en) | Dust granulation process and iron ore sintering process | |
| CN102925675B (en) | Method for recovering sludge from smelting ironmaking | |
| CN101407858A (en) | Preparation of carbonaceous composite pellet containing manganese | |
| CN108411105B (en) | A kind of method of multisystem cooperative disposal ion dust mud contaning | |
| CN103436694A (en) | Method for preparing chrome ore pellets | |
| CN113337707A (en) | Method for preparing cold-pressed balls for iron-making blast furnace and improving utilization rate of waste | |
| CN114540617A (en) | Preparation method and application method of redox briquetting of converter fly ash | |
| CN103468943A (en) | Cold-pressing pallet production process of chromium fine ore | |
| CN114763582A (en) | Method for producing magnesium pellets by using oriented silicon steel magnesium oxide waste | |
| CN101255484A (en) | Composite cooling agent for steel-smelting and production technique thereof | |
| CN1316046C (en) | Method for smelting ferro-silicon-aluminium alloy using flyash | |
| CN111961868A (en) | Digestion preparation method of converter waste sludge | |
| CN1028299C (en) | Method to make mud balls for dedusting steel-smelting converter | |
| WO2023092801A1 (en) | Method for reducing free calcium oxide in steel slag by using ferronickel slag, and application thereof | |
| CN104651553A (en) | Steel slag modifier | |
| CN1076400C (en) | Boron-magnesium compound additives and preparing method thereof | |
| CN112813258B (en) | Method for producing alkaline pellets by utilizing neutralized slag and sulfuric acid slag | |
| CN104099467A (en) | Technology for producing regenerated, cured and formed manganese ore blocks by using manganese-silicon alloy smelting industrial fumes |
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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190705 |
|
| WW01 | Invention patent application withdrawn after publication |