CN109266849A - Powder granulation device, powder facility for granulating and converter mud pelletizing drawing method - Google Patents
Powder granulation device, powder facility for granulating and converter mud pelletizing drawing method Download PDFInfo
- Publication number
- CN109266849A CN109266849A CN201811459922.3A CN201811459922A CN109266849A CN 109266849 A CN109266849 A CN 109266849A CN 201811459922 A CN201811459922 A CN 201811459922A CN 109266849 A CN109266849 A CN 109266849A
- Authority
- CN
- China
- Prior art keywords
- powder
- framed
- die cavity
- pedestal
- granulation device
- 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.)
- Pending
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
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)
- Glanulating (AREA)
Abstract
The invention discloses a kind of powder granulation device, powder facility for granulating and converter mud pelletizing drawing methods, are related to field of metallurgy.Present invention technical problems to be solved first are to provide the powder granulation device that a kind of pair of powder is pressed, the technical solution adopted is that: powder granulation device, including pedestal, framed, breathe freely gasket and compression bar, it is framed to be placed on pedestal, framed that disconnecting prevention structure is arranged between pedestal, the hollow die cavity of framed interior setting, die cavity is interior to place ventilative gasket, ventilative gasket is placed on pedestal, and air hole is arranged in the bottom of die cavity；Compression bar includes vertical bar, and the lower end of vertical bar is pressure head, and pressure head is placed in die cavity.Powder facility for granulating of the present invention, including hydraulic press and above-mentioned powder granulation device realize the material system of mixture by hydraulic press.Converter mud pelletizing drawing method of the present invention, firstly, producing the enrichment sludge of powdery；Then spare after drying；Mixture, reload, compression moulding are made again；It finally demoulds, enrichment sludge pelletizing is made.
Description
Technical field
The present invention relates to field of metallurgy, device that specifically a kind of pair of powder is pressed, device and method.
Background technique
Ferrous Metallurgy is the key industry of country.With green manufacturing, gradually deep, the metallurgy neck of energy-saving and environment-friendly consciousness
Domain is increasingly paid attention to by the processing of dusting solid waste and the application of new technology.It is well known that existing blast furnace-converter
Process flow is long, process is more, a large amount of solid dust waste can be generated, such as blast furnace dedusting ash (gas ash, gas mud), converter
Dedusting ash, enrichment sludge, iron scale etc..In addition, the producer of processing schreyerite can also generate vanadium extraction sludge, there are also a large amount of tails
Slag generates, such as blast furnace slag, blast furnace titanium extraction tailings, tailings in vanadium extraction.Also contain useful resources in these dust or sludge, it is such as high
Zinc is rich in furnace dedusting ash, the content of ZnO reaches 7%~12%；It is enriched with sludge, vanadium extraction sludge, is rich in iron in iron scale,
TFe content reaches 70%~80%；Titanium, TiO are rich in blast furnace slag2Content reach 21%~22%.Therefore, in these materials
Containing useful resources, so commonly known as " secondary resource ", consider from economic benefit and energy-saving and emission-reduction angle, more and more
Iron and steel enterprise starts to pay attention to the utilization of secondary resource, and increases input and carry out the research in the field, as gas ash mentions zinc, enrichment dirt
Mud is used as vanadium-raising cooling agent, blast furnace slag mentions titanium etc. and all has made some progress.Certainly, also there is also bigger risings for these researchs
Space.
Traditional blast furnace-bof process has the characteristics that long flow path, process are more, investment is big, the three wastes are more, needs to develop new
Smelting process and method as beneficial complement.Coal in China rich reserves, therefore iron ore coal-based direct reduction is studied
It is more, and there is certain application prospect.
In the above process, either the research and development of the recycling of secondary resource or ironmaking new process, raw material are substantially
Powder, and just can be carried out utilization after requiring pelletization treatment, carbonaceous reducing agent is added in gas mud as gas mud mentions zinc needs,
Reduction is carried out after agglomeration produces oxide powder and zinc.Enrichment sludge is used as vanadium-raising cooling agent and needs to be added after enrichment sludge agglomeration
In furnace, otherwise Dust Capacity is big and influences melt gas permeability.Coal-based DR process research and development need that carbon dust will be incorporated also in miberal powder
Former agent is roasted after agglomeration, explores suitable reducing condition, all this kind.Therefore, the pelletizing forming of a kind of pair of powder is researched and developed
Device, realize the pelletizing forming of powder, then carry out useful resources extraction research, have the function of basic.
Summary of the invention
Present invention technical problems to be solved first are to provide the powder granulation device that a kind of pair of powder is pressed.
The technical solution adopted by the present invention to solve the technical problems is: powder granulation device, including pedestal, framed, saturating
Air cushion piece and compression bar, framed to be placed on pedestal, framed that disconnecting prevention structure is arranged between pedestal, framed inside is hollow die cavity,
Ventilative gasket is placed in die cavity, ventilative gasket is placed on pedestal, the breathe freely cross sectional dimensions of gasket and the cross sectional dimensions of die cavity
Unanimously, air hole is arranged in the bottom of die cavity；Compression bar includes vertical bar, and the lower end of vertical bar is pressure head, the cross sectional dimensions and mould of pressure head
The cross sectional dimensions of chamber is consistent, and the length of vertical bar is not less than the depth of die cavity.
Specific: the air hole is set to framed bottom, and air hole is located at position corresponding with ventilative gasket.
Further, the disconnecting prevention structure are as follows: boss is arranged in the upside of pedestal, and heavy platform, heavy platform is arranged in framed downside
It is mutually adapted with boss, and the size of heavy platform is greater than the size of die cavity.
Specific: the die cavity is cylindrical, the circular in cross-section of boss and heavy platform.
Further, the compression bar includes cross bar and vertical bar, one end of vertical bar is connected to the middle part of cross bar, vertical bar it is another
One end is pressure head.
The process that powder granulation device suppresses granulating is as follows.Firstly, charging: powder and binder etc. are mixed in proportion,
Mixture is made, is packed into framed die cavity after mixture weighing；Secondly, compacting: pressure head being put into die cavity and is pushed, makes to mix
Close material compression moulding；Finally, demoulding: by pedestal and framed disengagement, by sample after molding from framed interior abjection.
The beneficial effect of powder granulation device of the present invention is: powder granulation device structure is simple, can be to various powder substances
It is pressed, but also pelletizing forming parameter can be explored, be such as enriched with the agglomeration of sludge, can be explored in laboratory more excellent
The technological parameters such as moisture, consumption of binder and the pressure of change, to instruct produced on-site.
The present invention also provides a kind of powder facility for granulating, including hydraulic press and any one of the above powder granulation device, liquid
Press includes hydraulic press main body, hydraulic press control system and hydraulic system, and hydraulic press main body includes plummer and hydraulic cylinder, hydraulic
The lower end of the piston of cylinder connects briquetting, and powder granulation device is placed in plummer, and briquetting is corresponding with compression bar.
Further, the bottom of the plummer also sets up lifting device.
The beneficial effect of powder facility for granulating of the present invention is:, can be accurate, quick by hydraulic press and powder granulation device
Sample is suppressed, and convenient for the density of control pressure and sample, in order to carry out relevant experimental study.The bottom of plummer is also
Lifting device is set, when sample preparation can, briquetting relative drop opposing stationary by plummer realize that sample preparation or briquetting are relatively quiet
Only, opposite rise of plummer realizes sample preparation.
The present invention also provides a kind of converter mud pelletizing drawing methods, comprising the following steps: the mud that S1. generates converter
It is collected by gravity spiral, obtains the enrichment sludge of powdery；S2. it will be enriched with spare after sludge is dried；S3. sludge will be enriched with, glued
Agent, moisture are tied according to 100:(2~10): the mass fraction of (4~10) is mixed in proportion, and mixture is made；S4. it charges:
Mixture is fitted into die cavity framed in any of the above-described scheme；S5. it suppresses: being suppressed by above-mentioned powder facility for granulating,
Make mixture compression moulding；S6. it demoulds: by pedestal and framed disengagement, by molding enrichment sludge pelletizing from framed interior abjection.
The beneficial effect of converter mud pelletizing drawing method of the present invention is: Iron grade is higher in converter mud, impurity content
It is relatively low, it can be used as steelmaking feed to replace steel scrap, but row enters furnace again after the agglomeration that needs to pelletize in converter mud.By turning
Furnace mud pelletizing drawing method after energy experimental study converter mud enrichment, carries out the binder selection of granulation agglomeration process and adds
Dosage, water quantity, pressing pressure parameter research and probe, Optimum Experiment control parameter；To avoid in actual production line
The problem of upper development is tested.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of powder granulation device of the present invention.
Fig. 2 is the structural schematic diagram of powder facility for granulating of the present invention.
Components, position and number in figure: pedestal 1-1, framed 1-2, ventilative gasket 1-3, compression bar 1-4, air hole 1-5；
Hydraulic press main body 2, plummer 2-1, hydraulic cylinder 2-2, briquetting 2-3, hydraulic press control system 3, hydraulic system 4, mixture 5.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
As shown in Figure 1, powder granulation device of the present invention, including pedestal 1-1, framed 1-2, ventilative gasket 1-3 and compression bar 1-
4, framed 1-2 is placed on pedestal 1-1, and disconnecting prevention structure is arranged between framed 1-2 and pedestal 1-1, is hollow mould inside framed 1-2
Chamber.Disconnecting prevention structure is for there is opposite sliding after avoiding framed 1-2 and pedestal 1-1 stress.For example, disconnecting prevention structure are as follows: pedestal 1-1
Upside boss is set, heavy platform is arranged in the downside of framed 1-2, and heavy platform and boss are mutually adapted, and the size of heavy platform is greater than mould
The size of chamber.In addition it is also possible to be the upside setting heavy platform of pedestal 1-1, while the boss of adaptation is arranged in the downside of framed 1-2；
It is bolted alternatively, disconnecting prevention structure is arranged between pedestal 1-1 and framed 1-2.
Ventilative gasket 1-3 is placed in die cavity, ventilative gasket 1-3 is placed on pedestal 1-1, the cross section ruler for the gasket 1-3 that breathes freely
It is very little consistent with the cross sectional dimensions of die cavity.Ventilative gasket 1-3 has gas permeability, such as selection permeable stone.The bottom of die cavity is arranged
Air hole 1-5, exhaust when air hole 1-5 is for depressing mixture 5.Air hole 1-5 may be disposed at pedestal 1-1, may also set up
In framed 1-2.Air hole 1-5 is preferably arranged at position corresponding with ventilative gasket 1-3, and mixture 5 is avoided to block air hole 1-
5.For example, air hole 1-5 is set to the bottom position corresponding with ventilative gasket 1-3 of framed 1-2, air hole 1-5 is only arranged one
It is a.
Compression bar 1-4 includes vertical bar, and the lower end of vertical bar is pressure head, the cross sectional dimensions of pressure head and the cross sectional dimensions one of die cavity
It causes, guarantees that pressure head can generate uniform pressure to mixture 5；The length of vertical bar is not less than the depth of die cavity, in order to demould.For
Opposite convenient for pressure head pushes, and compression bar 1-4 includes cross bar and vertical bar, and one end of vertical bar is connected to the middle part of cross bar, vertical bar it is another
One end is pressure head.
The shape of any cross section of die cavity is all the same, and the cross section of die cavity can be circle, or can also for rectangle or
Person's other shapes, but require the cross-sectional shape one of the pressure head of compression bar 1-4 and the cross-sectional shape of ventilative gasket 1-3 and die cavity
It causes.For example, die cavity is cylindrical, the cross section of boss and heavy platform is also rounded.
As shown in Fig. 2, powder facility for granulating of the present invention, including hydraulic press and above-mentioned powder granulation device, hydraulic press include
Hydraulic press main body 2, hydraulic press control system 3 and hydraulic system 4, hydraulic press main body 2 include plummer 2-1 and hydraulic cylinder 2-2, liquid
The lower end of the piston of cylinder pressure 2-2 connects briquetting 2-3, and powder granulation device is placed in plummer 2-1, and briquetting 2-3 and compression bar
1-4 is corresponding.Plummer 2-1 is opposing stationary, and powder granulation can be achieved in opposite push of briquetting 2-3.Alternatively, briquetting 2-3 is relatively quiet
Only, plummer 2-1 is opposite rises, and can also realize that powder is pelletized, at this point, the bottom of plummer 2-1 also sets up lifting device.
Converter mud pelletizing drawing method of the present invention, comprising the following steps: the mud that S1. generates converter passes through gravity spiral shell
Rotation is collected, and obtains the enrichment sludge of powdery, main component and the content for being enriched with sludge are as shown in table 1.
The main component and mass percentage/% of the enrichment sludge of table 1
Note: TFe is the mass percentage that ferro element is total in sample in table 1.
Because enrichment sludge in Iron grade it is higher, reach 79.5%, impurity content is relatively low, therefore, enrichment sludge by with
By steelmaking feed to replace steel scrap.But the enrichment sludge of powdery cannot direct plunge into converter, need the enrichment sludge of powdery
Row enters furnace again after granulation agglomeration.
S2. it will be enriched with spare after sludge is dried.S3. enrichment sludge, binder, moisture are proportionally mixed, is made
Obtain mixture 5.S4. it charges: mixture 5 is fitted into above scheme in the die cavity of framed 1-2；S5. it suppresses: passing through above-mentioned powder
Facility for granulating is suppressed, and 5 compression moulding of mixture is made；S6. it demoulds: pedestal 1-1 and framed 1-2 being disengaged, by molding richness
Collection sludge ball group deviates from out of framed 1-2.
The step of upper section, is described in detail below.In actual production, ball press is mostly used to carry out enrichment sludge greatly
Agglomeration processing, and need to study binder selection and additive amount, water quantity, compacting pressure for the enrichment sludge granulation agglomeration
Power etc..Therefore, when formulating experimental program, experiment of single factor can be carried out, can also carry out orthogonal experiment, due to influence factor compared with
It is more, therefore carry out orthogonal experiment.Design parameter and level are as shown in table 2, power when wherein the pressure in table 2 is " S5. compacting ".
Table 2 is enriched with the factor level of sludge briquetting experiment
Testing the framed die cavity used is cylindric, diameter 20mm, the enrichment sludge pelletizing sample suppressed
Diameter is 20mm, be enriched with sludge pelletizing sample height according to charging number it is different, general control is in 18~20mm.
When compacting, briquetting 2-3 is opposing stationary, and plummer 2-1 rises according to the rate of 2mm/s, the mixture 5 in die cavity by
Gradually compaction moulding, when pressure reaches setting value, plummer 2-1 stops rising, and compacting terminates.It is finally demoulded, specifically may be used
Powder granulation device is first taken out, then removes pedestal 1-1, sludge pelletizing sample will be enriched with by the method for manually tapping compression bar 1-4
It takes out.Multiple enrichment sludge pelletizing samples can be suppressed by repeating the above process.
Strength test is carried out to the enrichment sludge pelletizing sample of above-mentioned compacting, the pelletizing obtained under different experimental conditions is strong
Degree, and then it is binder additional amount 2.0%, water quantity 6%, pressure that the experiment condition optimized is analyzed by data
40kN。
Claims (8)
1. powder granulation device, it is characterised in that: including pedestal (1-1), framed (1-2), ventilative gasket (1-3) and compression bar (1-
4), framed (1-2) is placed on pedestal (1-1), disconnecting prevention structure is arranged between framed (1-2) and pedestal (1-1), in framed (1-2)
Portion is hollow die cavity, is placed ventilative gasket (1-3) in die cavity, and ventilative gasket (1-3) is placed on pedestal (1-1), gasket of breathing freely
The cross sectional dimensions of (1-3) and the cross sectional dimensions of die cavity are consistent, and air hole (1-5) is arranged in the bottom of die cavity；Compression bar (1-4) packet
Vertical bar is included, the lower end of vertical bar is pressure head, and the cross sectional dimensions of pressure head and the cross sectional dimensions of die cavity are consistent, and the length of vertical bar
Not less than the depth of die cavity.
2. powder granulation device as described in claim 1, it is characterised in that: the air hole (1-5) is set to framed (1-2)
Bottom, and air hole (1-5) is located at position corresponding with ventilative gasket (1-3).
3. powder granulation device as described in claim 1, it is characterised in that: the disconnecting prevention structure are as follows: the upside of pedestal (1-1)
Boss is set, and heavy platform is arranged in the downside of framed (1-2), and heavy platform and boss are mutually adapted, and the size of heavy platform is greater than die cavity
Size.
4. powder granulation device as described in claim 1, it is characterised in that: the die cavity is cylindrical, boss and heavy platform
Circular in cross-section.
5. the powder granulation device as described in Claims 1 to 4 any claim, it is characterised in that: compression bar (1-4) packet
Cross bar and vertical bar are included, one end of vertical bar is connected to the middle part of cross bar, and the other end of vertical bar is pressure head.
6. powder facility for granulating, it is characterised in that: including described in 1~5 any claim of hydraulic press and the claims
Powder granulation device, hydraulic press include hydraulic press main body (2), hydraulic press control system (3) and hydraulic system (4), hydraulic owner
Body (2) includes plummer (2-1) and hydraulic cylinder (2-2), and the lower end of the piston of hydraulic cylinder (2-2) connects briquetting (2-3), powder system
Grain device is placed in plummer (2-1), and briquetting (2-3) is corresponding with compression bar (1-4).
7. powder facility for granulating as claimed in claim 6, it is characterised in that: the bottom of the plummer (2-1) also sets up liter
Falling unit.
8. converter mud pelletizing drawing method, it is characterised in that: the following steps are included: the mud that converter generates is passed through weight by S1.
The wrench of a force system is collected, and the enrichment sludge of powdery is obtained；S2. it will be enriched with spare after sludge is dried；S3. sludge, binder, water will be enriched with
Divide according to 100:(2~10): the mass fraction of (4~10) is mixed in proportion, is made mixture (5)；S4. it charges: will mix
Material (5) is closed to be packed into the die cavity of framed (1-2) described in 1~7 any claim of the claims；S5. it suppresses: passing through
Powder facility for granulating described in the claims 6 or 7 is suppressed, and mixture (5) compression moulding is made；S6. it demoulds: the bottom of by
Seat (1-1) and framed (1-2) disengages, the abjection out of framed (1-2) by molding enrichment sludge pelletizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811459922.3A CN109266849A (en) | 2018-11-30 | 2018-11-30 | Powder granulation device, powder facility for granulating and converter mud pelletizing drawing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811459922.3A CN109266849A (en) | 2018-11-30 | 2018-11-30 | Powder granulation device, powder facility for granulating and converter mud pelletizing drawing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109266849A true CN109266849A (en) | 2019-01-25 |
Family
ID=65186878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811459922.3A Pending CN109266849A (en) | 2018-11-30 | 2018-11-30 | Powder granulation device, powder facility for granulating and converter mud pelletizing drawing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109266849A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101142075A (en) * | 2005-03-18 | 2008-03-12 | 株式会社捷太格特 | Compression molding machine for metal material briquette, manufacturing apparatus for metal material briquette, and compression molding method for metal material briquette |
| CN101439406A (en) * | 2008-12-19 | 2009-05-27 | 贵州新安航空机械有限责任公司 | Method for molding and sintering powder metallurgy |
| CN103468855A (en) * | 2013-09-30 | 2013-12-25 | 攀钢集团攀枝花钢钒有限公司 | Rotating furnace coolant, preparing method thereof and use method thereof |
| CN206982942U (en) * | 2017-03-27 | 2018-02-09 | 广州华隆建筑材料有限公司 | High intensity regenerative cement building block make-up machine |
-
2018
- 2018-11-30 CN CN201811459922.3A patent/CN109266849A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101142075A (en) * | 2005-03-18 | 2008-03-12 | 株式会社捷太格特 | Compression molding machine for metal material briquette, manufacturing apparatus for metal material briquette, and compression molding method for metal material briquette |
| CN100577401C (en) * | 2005-03-18 | 2010-01-06 | 株式会社捷太格特 | Compression molding machine for metal material briquette, manufacturing apparatus for metal material briquette, and compression molding method for metal material briquette |
| CN101439406A (en) * | 2008-12-19 | 2009-05-27 | 贵州新安航空机械有限责任公司 | Method for molding and sintering powder metallurgy |
| CN103468855A (en) * | 2013-09-30 | 2013-12-25 | 攀钢集团攀枝花钢钒有限公司 | Rotating furnace coolant, preparing method thereof and use method thereof |
| CN206982942U (en) * | 2017-03-27 | 2018-02-09 | 广州华隆建筑材料有限公司 | High intensity regenerative cement building block make-up machine |
Non-Patent Citations (1)
| Title |
|---|
| 姚宝魁: "《矿山岩体工程地质力学研究》", 30 June 1993 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103114201B (en) | Agglomeration method for iron containing dust slime of iron and steel plants | |
| CN104894367A (en) | Sintering technology for acidic pellet ore and alkaline material mixed ultra-thick material layer | |
| CN104232885A (en) | Method for blending ore of vanadium-titanium sintered ore | |
| Kamijo et al. | Sintering behavior of raw material bed placing large particles | |
| CN104787741B (en) | The method of the carbon containing powder resource utilization of industry | |
| Burchart-Korol et al. | Application of the new mixing and granulation technology of raw materials for iron ore sintering process | |
| CN113481346B (en) | Low-cost composite efficient heating agent for converter and preparation method thereof | |
| JP2007270229A (en) | Steelmaking dust recycling system | |
| CN107164631B (en) | A kind of method and system improving iron ore sintering mixture ventilation | |
| CN109266849A (en) | Powder granulation device, powder facility for granulating and converter mud pelletizing drawing method | |
| Mao et al. | Preparation process of cold bonded pellets with iron-bearing dust and sludge from steel production process | |
| CN102719665B (en) | Process method for producing slag-forming agent for making steel by utilizing steel making sludge | |
| JP5958264B2 (en) | Agglomerate for blast furnace and method for producing the same | |
| CN113564352B (en) | Method for producing high-quality sintering ore by using multiple manganese ore powder ore blending | |
| CN206902200U (en) | A kind of system for improving iron ore sintering mixture ventilation | |
| EP1702994A1 (en) | Steel manufacturing dust solidified, process for producing the same and production apparatus therefor | |
| CN109916944B (en) | Sintering cup test method and sintering cup | |
| CN104099473A (en) | Technological method for extraction of silicon-aluminum-iron-titanium alloy from pyrite slag | |
| CN201128749Y (en) | System for producing cold bonding block with steel making and steel rolling sludge | |
| CN211385694U (en) | High efficiency drum screening plant | |
| RU2783389C2 (en) | Solid agglomerated product based on iron oxides and its production method | |
| Zhou et al. | Effect of coke ratio on pore structure evolution in the high-temperature zone of sintering bed | |
| CN104846193A (en) | Method for pressing steel slag into furnace charge of blast furnace | |
| CN102533374A (en) | Molded coal produced by recycled steel factory dust and used for smelting melted iron and manufacture method thereof | |
| KR940007359B1 (en) | Method of moisture content decision |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190125 |