CN105803186B - Converter dust recovery process - Google Patents
Converter dust recovery process Download PDFInfo
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- CN105803186B CN105803186B CN201610161673.4A CN201610161673A CN105803186B CN 105803186 B CN105803186 B CN 105803186B CN 201610161673 A CN201610161673 A CN 201610161673A CN 105803186 B CN105803186 B CN 105803186B
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- digestion
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- milling
- reaction
- quick lime
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- 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
-
- 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
-
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/02—Working-up flue dust
-
- 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
- C21C2200/00—Recycling of waste material
-
- 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)
- Mechanical Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a kind of converter dust recovery process, including：Converter dust and quick lime are delivered in feedstock pre-processing system, so that converter dust and quick lime is uniformly mixed in the feedstock pre-processing system, and quick lime is made to carry out digestion reaction in the feedstock pre-processing system；Mixed material after digestion reaction is delivered in milling die mould system, by milling, die mould system carries out processing of milling to mixed material, and mixed material carries out extrusion forming processing to milling that treated, to obtain the biodegradable block of compression moulding；Biodegradable block is delivered in heated reaction system, carrying out oxidation processes to biodegradable block in heated reaction system forms ripe object block, which can be used as the raw material of pneumatic steelmaking.The present invention can be while the cost recovery of reduction converter dust, to the harmful effect of the quality of steel when avoiding the pollution to production environment and living environment, and effectively avoid the ripe material after recovery processing as pneumatic steelmaking raw material.
Description
Technical field
The present invention relates to iron and steel smelting technology fields, and work is recycled more particularly to the converter dust in steel smelting procedure
Skill.
Background technology
Due to having in the converter dust (i.e. converter dust-removing ash or converter dust-removing sludge) that is generated in steel smelting procedure
Higher iron content (such as iron content can reach 63% or more), and the content of the objectionable impurities such as phosphorus, sulphur and silicon is smaller, because
This, converter dust is worth with higher recycling.
Existing converter dust recovery process is usually：Converter dust and quick lime and other iron-bearing materials are mixed
It closes, and binder is added, (such as drying and processing either shines dry-cure or dries processing for progress pressure ball processing later and drying process
Deng), and the pelletizing after drying process is transported to converter, using the raw material as pneumatic steelmaking.
Inventor has found in realizing process of the present invention, although can reduce the cost of steel-making to converter dust recycling, so
And existing converter dust recovery process is primarily present following problem：
If 1, binder (such as bentonite, starch and silica gel) usage amount is less, pelletizing pulverization rate can be higher, from
And the return powder for resulting in the need for carrying out pelletizing making again is more, this not only increases the cost recovery of converter dust, and
It is degrading the production environment of converter installation, transporting equipment and reclaimer；
If 2, largely using binder to improve the intensity of pelletizing, can cause on the harmful element in finished pellet
It rises, this not only can generate harmful effect to the quality of steel, and can increase the cost recovery of converter dust；
3, in the manufacturing process of pelletizing, raw material can be bonded in corresponding equipment, during digestion process, former material
Material can be bonded in digestion feed bin and be possible to intercept the discharge port of digestion feed bin, this needs clears up corresponding equipment
(such as manual cleaning equipment) to reduce the effective rate of utilization of equipment, and then increases the cost recovery of converter dust.
Invention content
One of it is a primary object of the present invention to, a kind of converter dust recovery process, technical problem to be solved are provided
It is while reducing the cost recovery of converter dust, to avoid the pollution to production environment, and avoid the ripe object after recovery processing
Expect the harmful effect to the quality of steel.
It the purpose of the present invention and solves its technical problem technical solution below may be used to realize.
One side according to the present invention proposes a kind of converter dust recovery process, including：By converter dust and quick lime
It is delivered in feedstock pre-processing system, so that converter dust and quick lime is uniformly mixed in the feedstock pre-processing system, and make
Quick lime carries out digestion reaction in the feedstock pre-processing system；Mixed material after digestion reaction is delivered to die mould of milling
In system, to carrying out processing of milling, and to milling that treated, mixed material carries out at extrusion forming the die mould system of milling
Reason, to obtain the biodegradable block of compression moulding；The biodegradable block is delivered in heated reaction system, in the heated reaction system
In to the biodegradable block carry out oxidation processes, so that the biodegradable block is formed ripe object block, the ripe object block can be used as pneumatic steelmaking
Raw material.
By above-mentioned technical proposal, converter dust recovery process of the invention at least has following advantages and advantageous effect：
The present invention to the mixed material after digestion reaction by carrying out processing of milling, and compression moulding is biodegradable block, need not increased
It is by biodegradable block progress oxidation processes, biodegradable block being made to form the ripe object block with intensity, i.e., ripe in the case of binder
Non-breakable object block is particle；Due to not including binder in mixed material, recovery process of the invention institute shape
At can as the raw material of pneumatic steelmaking ripe object block will not to the quality of steel generate harmful effect, and it is possible to prevente effectively from
Bonding phenomenon of the binder to equipment；By the present invention in that be flat with bottom, and two side is outwardly projecting arc-shaped side
Wall, and the digestion vessel that the digestion hopper with cover board is reacted as quicklime slaking, not only can be to avoid in digestion process
Environmental pollution (including fine solid particle in the moisture of evaporation) caused by moisture evaporation, and since grab claw etc. can be used
Equipment is easily from the mixed material after crawl digestion reaction in digestion hopper, and therefore, even mixed material is bonded in digestion
In hopper, the process of the crawl mixed material of grab claw can clear up the mixed material being bonded in digestion hopper simultaneously, one
Determine to avoid the process of manual cleaning equipment in degree；To which technical solution provided by the invention can reduce converter dust
While cost recovery, the pollution to production environment and living environment is avoided, and effectively prevents the ripe object after recovery processing
Expect the harmful effect to the quality of steel.
In conclusion the present invention technically has significant progress, and with apparent positive technique effect, really it is
One new and innovative, progressive, practical new design.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, and in order to allow the above and other objects, features and advantages of the present invention can
It is clearer and more comprehensible, it is special below to lift preferred embodiment, and coordinate attached drawing, detailed description are as follows.
Description of the drawings
Fig. 1 is the schematic diagram of the converter dust recovery process of the present invention；
Fig. 2 is the schematic diagram of the single digestion hopper of the present invention；
Fig. 3 is the schematic diagram for the multiple digestion hoppers of the present invention being set up in parallel；
Fig. 4 is the schematic diagram of the heated reaction system of the present invention；
Fig. 5 is the schematic diagram of the ripe object block after the oxidation processes of the present invention.
Specific implementation mode
It is of the invention to reach the technological means and related efficacy that predetermined goal of the invention is taken further to illustrate, with
Lower combination attached drawing 1-5 and preferred embodiment, to the specific implementation mode of the converter dust recovery process proposed according to the present invention,
Feature and its effect are described in detail as after.
The converter dust recovery process of the present embodiment includes mainly following four processing procedures：
The preprocessing process of processing procedure one, raw material.
Specifically, the present embodiment is to realize the pretreated of raw material by feedstock pre-processing system 1 (as shown in Figure 1).
Feedstock pre-processing system 1 is substantially carried out two kinds of processing for converter dust and quick lime therein is inputted, first, making converter dust
It is uniformly mixed with quick lime, second is that quick lime is made to carry out digestion reaction.
It follows that the feedstock pre-processing system 1 in the present embodiment includes mainly：Agitating device (such as blender) and
Digestion reaction device (such as closed digestion vessel)；Agitating device therein be mainly used for by stir, humidify make input its
In converter dust and quick lime be uniformly mixed and make quick lime carry out initial stage digestion, to generate calcium hydroxide, digestion degree is usual
85% or more can be reached；Digestion reaction device therein is mainly used for making uniformly mixed converter dust and quick lime in it
Portion's ageing mixture is abundant, it is preferred that ageing mixture time of the uniformly mixed converter dust and quick lime in digestion reaction device is no less than
24 hours, to make quick lime carry out more thorough digestion reaction in it.Digestion reaction device should make raw stone as much as possible
Ash generates calcium hydroxide with water, such as 95% quick lime is at least made to generate calcium hydroxide together with water.In addition, the present embodiment disappears
Change the moisture content of the mixed material obtained after reaction usually between 5%-15%.
The ratio of converter dust and quick lime in the present embodiment usually may be used 4:1-6:1.
In Fig. 1, converter dust (i.e. Fig. 1 in the quick lime in lime silo (i.e. pulverized limestone in Fig. 1) and dedusting ash cellar
In dedusting ash) be transported in blender (agitating device i.e. in feedstock pre-processing system 1).
The present embodiment can according to actual demand by the ferrous material of recycling (ground of the corresponding workshop of such as steel-making enterprise or
Iron filings etc. in equipment) it is also delivered in feedstock pre-processing system 1, as shown in fig. 1, the ferrous material in remittance hopper passes through sieve
After choosing, relatively fine ferrous material is passed together with the uniformly mixed converter dust and quick lime that blender exports by belt feeder
It transports in digestion hopper (the closed digestion vessel i.e. in feedstock pre-processing system), certainly, the present embodiment can also will relatively carefully
Small ferrous material is together with the uniformly mixed converter dust and quick lime that blender exports by multiple belt conveyers
(belt feeder in such as Fig. 1 and inclination angle belt conveyor) is transmitted to the slaking silos with steel construction and (belongs to pretreatment of raw material system
Digestion reaction device in system 1) in.
If digestion hopper in the present embodiment by dig pit on ground etc. modes by be arranged, the consumption hopper
It is properly termed as digestion material hole.
Closed digestion vessel in this implementation includes mainly：At least one digestion hopper and at least one cover board,
Under normal conditions, a digestion hopper corresponds to a cover board (there are one slide covers for setting on such as one digestion hopper), certainly,
One digestion hopper can also correspond to multiple cover boards (there are two the slide covers of opposite sliding for setting on such as one digestion hopper).
Four digestion hoppers are shown in Fig. 3, wherein be all covered with cover board on three digestion hoppers in left side, form
Closed digestion vessel, and the cover board on one of rightmost side digestion hopper is opened, it can be seen that in the digestion hopper
Mixed material.
Digest hopper a specific example as shown in Fig. 2, in Fig. 2 digestion hopper bottom be it is flat, so as to
It is outwardly projecting arc-shaped to facilitate the two side of digestion hopper of the grab claw in the bottom smooth-ride of digestion hopper, Fig. 2
Side wall, the arc-shaped side wall can facilitate the grab bucket of grab claw to capture mixed material.It is captured from digestion hopper in grab claw mixed
During closing material, the mixed material for being bonded in digestion hopper bottom and side wall can be captured together, to capture
While realize cleaning digestion hopper purpose.
Processing procedure two, compression moulding processing procedure of milling.
Specifically, the present embodiment is realized feedstock pre-processing system 1 by milling die mould system 2 (as shown in Figure 1)
The mixed material exported carries out compression moulding processing of milling.Die mould system 2 of milling is for input mixed material master therein
Two kinds of processing are carried out, first, making mixed material be further crushed by milling and enhancing the closely knit of mixed material simultaneously
Degree, second is that the mixed material after milling is made to be press-formed.
It follows that the die mould system 2 of milling in the present embodiment includes mainly：Mixed grind device (such as kolleroang), pressure ball dress
Set (such as ball press) and screening plant (such as sieve).Mixed grind device is mainly used for through rolling mode to feedstock pre-processing system
Mixed material after the digestion reaction of 1 output carries out processing of milling, and the present embodiment should be such that the humidity in mixed grind device is maintained at
Between 10%-20%.Press ball device is mainly used for the mixed material after rolling and conditioning being pressed into green-ball (i.e. biology
Block), the mixed material after rolling and conditioning is such as pressed by green-ball using the ball press of low middle pressure.Screening plant is main
Vibration screening is carried out for green-ball made of suppressing press ball device, so that satisfactory green-ball is separated with particle, such as passes through
Vibrating screen panel makes particle be missed from the eyelet of sieve, and ultimately remains in the green-ball that is satisfactory on sieve, sieve
Eyelet can be arranged according to the actual size of green-ball.
In Fig. 1, the mixed material after the digestion process that feedstock pre-processing system 1 exports can be first stored on a small quantity mills
In the intermediate bin of die mould system 2, and the mixed material stored by the intermediate bin is supplied to kolleroang, by into kolleroang
Water, which is added, can be such that the humidity in mixed grind device is maintained between 10%-20%, and the mixed material after kolleroang rolling can
To send another belt feeder to by a belt feeder (such as inclination angle belt conveyor), and will be after rolling by another belt feeder
Mixed material be transferred to intermediate bin, and the mixed material after the rolling stored by the intermediate bin is supplied to ball press, pressure
After processing is pressed to mixed material in ball machine, the green-ball of compression moulding is supplied to sieve, the particle under sieve sieve can
To be supplied to scraping transporter via belt transmission device (such as belt feeder and inclination angle belt conveyor), to be suppressed again
Forming processes；The green-ball finally remained on sieve is satisfactory green-ball.
It should be noted that since green-ball needs to carry out sufficient oxidation processes, the present embodiment usually may be used
Existing mesolow ball press carries out the compression moulding of green-ball, the compression moulding without carrying out green-ball using high-pressure ball press.
Processing procedure three, oxidation processes.
Specifically, the present embodiment be realized by heated reaction system 3 (as shown in Figure 1) it is defeated to die mould system 2 of milling
The biodegradable block (such as green-ball) gone out carries out oxidation processes, heated reaction system 3 to inputting biodegradable block therein by aoxidizing
Processing is so that biodegradable block forms ripe object block, so as to using the ripe object block as the raw material of pneumatic steelmaking.
It follows that the heated reaction system 3 in the present embodiment includes mainly：Reaction vessel that can be heat-resisting, is such as provided with
The reaction vessel (retort in such as Fig. 1) of catalyzing enzyme device.Oxidation processes in reaction vessel may will produce a small amount of
Water in reaction vessel can be introduced into feedstock pre-processing system 1 by pipeline and milled by water (such as hot water), the present embodiment
It is recycled in die mould system 2, as the water generated in reaction vessel can be introduced into the blender of feedstock pre-processing system 1
Raw material stirring (as shown in Figure 1) is carried out, the water generated in reaction vessel for another example can be introduced into the mixed grind for die mould system 2 of milling
Conditioning (as shown in Figure 1) is carried out in machine.
The present embodiment die mould system 2 that can will be milled by equipment such as belt feeder, chute and auger strippers is exported
Satisfactory green-ball be added in reaction vessel, when being directly added into reaction vessel to avoid green-ball, due to reaction vessel compared with
It is high and the phenomenon that so that green-ball is broken into pieces.One specific example of reaction vessel is as shown in figure 4, reaction vessel top air inlet in Fig. 4
(gas needed for oxidation processes processing), lower part outlet (flue dust etc. of extra gas and generation).
One specific example of the oxidation processes of the biodegradable block of the present embodiment in the reaction vessel is to be not less than temperature
The high-temperature oxidizing gas of 150 DEG C (such as 150 DEG C) by entering reaction vessel after catalyzing enzyme device, make green-ball in reaction vessel with
Oxygen carries out oxidation reaction, and the time of the oxidation reaction in the reaction vessel should usually be maintained at 7-9 hours (such as 9 hours),
To make iron in green-ball and ferrous oxide fully be aoxidized, and di-iron trioxide is generated, i.e., green-ball is formed after oxidation processes
Ripe ball, and the main component of the pelletizing chemical combination consolidation of ripe ball is di-iron trioxide.Ripe ball after the oxidation processes of the present embodiment
Color typically appears as red (as shown in Figure 5), and the quality accounting of the di-iron trioxide in the ripe ball that is obtained of the present embodiment
Can be 40%-60%.
High-temperature oxidizing gas of the temperature not less than 150 DEG C in the present embodiment can be the high temperature that temperature is not less than 150 DEG C
Air, it is contemplated that the factors such as energy conservation and environmental protection, high-temperature oxidizing gas of the temperature not less than 150 DEG C in the present embodiment may be temperature
Degree is not less than 150 DEG C, and adds the limekiln high-temp waste gas of oxygen (such as adding a small amount of oxygen), such as by air-introduced machine by stone
Ash furnace high-temp waste gas is introduced into reaction vessel.
Processing procedure four, condensation dust removal process.
Specifically, the feedstock pre-processing system 1, die mould system 2 of milling and heated reaction system 3 in the present embodiment are each
The substances such as the gas and flue dust that will produce from the course of work, the present embodiment should carry out condensation dust removal process to it, with drop
Destruction of the substances such as low gas and flue dust to environment.
The present embodiment can realize condensation dust removal process using condensation dust pelletizing system 4, as the present embodiment makes raw material locate in advance
Reason system 1, die mould system 2 of milling and heated reaction system 3 are connect by pipeline with condensation dust pelletizing system 4 respectively, and condensation removes
Dirt system 4 may include U-tube, and the bottom of U-tube is provided with branched spraying apparatus, and spraying apparatus realizes convection current by spraying
The substances such as gas and flue dust through U-tube carry out cooling dedusting.
The upper area of the side wall of digestion hopper in the present embodiment can be connected to by pipeline with condensation dust pelletizing system 4,
And the bottom of the reaction vessel in the present embodiment can be connected to by pipeline with condensation dust pelletizing system 4.In addition, in the present embodiment
Blender and slaking silos etc. can also be connected to by pipeline with condensation dust pelletizing system 4.
The above is only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, however, above-described embodiment is not limited to the present invention, any to be familiar with sheet special
The technical staff of industry without departing from the scope of the present invention, when the technology contents using the disclosure above make it is a little more
Equivalent embodiment that is dynamic or being modified to equivalent variations, as long as being the content without departing from technical solution of the present invention, according to the present invention
Technical spirit still falls within technical solution of the present invention to any simple modification, equivalent change and modification made by above example
In the range of.
Claims (5)
1. a kind of converter dust recovery process, which is characterized in that including：
Converter dust and quick lime are delivered in feedstock pre-processing system, converter dust and quick lime is made to locate in advance in the raw material
It is uniformly mixed in reason system, and quick lime is made to carry out digestion reaction in the feedstock pre-processing system；
Mixed material after digestion reaction being delivered in milling die mould system, the die mould system of milling carries out processing of milling,
And mixed material carries out extrusion forming processing to milling that treated, to obtain the biodegradable block of compression moulding；
The biodegradable block is delivered in heated reaction system, the biodegradable block is aoxidized in the heated reaction system
Processing, makes the biodegradable block form ripe object block, raw material of the ripe object block as pneumatic steelmaking；
Wherein, the oxidation processes include：Enter after so that high-temperature oxidizing gas of the temperature not less than 150 DEG C is passed through catalyzing enzyme device
Reaction vessel makes the biodegradable block in reaction vessel carry out 7-9 hours oxidation reactions, makes biology iron in the block and ferrous oxide
Oxidation generates di-iron trioxide, and the quality accounting of the ripe object di-iron trioxide in the block is 40%-60%；
The temperature includes not less than 150 DEG C of high-temperature oxidizing gas：High temperature air of the temperature not less than 150 DEG C or temperature are not
Less than 150 DEG C and be added oxygen limekiln high-temp waste gas.
Wherein, the feedstock pre-processing system includes：Agitating device and closed digestion vessel, the agitating device pass through stirring
Make the converter dust and quick lime with 4:1-6:1 is uniformly mixed, and uniformly mixed converter dust and quick lime is in the digestion
Ageing mixture at least 24 hours in container, so that quick lime carries out digestion reaction in the digestion vessel, mixture after nitration reaction
The moisture content of material is between 5%-15%.
2. converter dust recovery process as described in claim 1, which is characterized in that the closed digestion vessel includes：Extremely
A few digestion hopper and at least one cover board, the bottom of the digestion hopper are flat, and the two side of the digestion hopper
For outwardly projecting arc-shaped side wall, the cover board is covered in the upper surface of digestion hopper, to form closed digestion vessel.
3. converter dust recovery process as described in claim 1, which is characterized in that the die mould system of milling includes：Mixed grind
Device, press ball device and screening plant, the mixed grind device carry out rolling and damping to the mixed material after digestion reaction
It handles, the humidity in the mixed grind device is maintained between 10%-20%, and the press ball device will be after rolling and conditioning
Mixed material be pressed into green-ball, green-ball made of the screening plant suppresses press ball device carries out vibration screening, makes to meet
It is required that green-ball and particle be separated.
4. converter dust recovery process as described in claim 1, which is characterized in that the heated reaction system includes：Setting
There is the reaction vessel of catalyzing enzyme device.
5. the converter dust recovery process as described in any claim in Claims 1-4, which is characterized in that the raw material
Pretreatment system, die mould system of milling and heated reaction system are connect by pipeline with condensation dust pelletizing system respectively, described cold
Solidifying dust pelletizing system realizes cooling dedusting by spray pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610161673.4A CN105803186B (en) | 2016-03-21 | 2016-03-21 | Converter dust recovery process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610161673.4A CN105803186B (en) | 2016-03-21 | 2016-03-21 | Converter dust recovery process |
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| CN105803186A CN105803186A (en) | 2016-07-27 |
| CN105803186B true CN105803186B (en) | 2018-08-24 |
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| CN201610161673.4A Active CN105803186B (en) | 2016-03-21 | 2016-03-21 | Converter dust recovery process |
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| CN109092182A (en) * | 2017-06-21 | 2018-12-28 | 宝钢工程技术集团有限公司 | Lime stone mud cake returns the device and its application method of Commercial cultivation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1070690A (en) * | 1992-08-21 | 1993-04-07 | 柳州钢铁厂 | The method of dedusting steel-smelting converter mud balling-up |
| CN102912120A (en) * | 2012-10-23 | 2013-02-06 | 鞍钢股份有限公司 | Method for manufacturing high-strength cold-pressed pellets |
| CN203173991U (en) * | 2013-04-02 | 2013-09-04 | 周战利 | Sealed-tank quicklime slaker |
-
2016
- 2016-03-21 CN CN201610161673.4A patent/CN105803186B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1070690A (en) * | 1992-08-21 | 1993-04-07 | 柳州钢铁厂 | The method of dedusting steel-smelting converter mud balling-up |
| CN102912120A (en) * | 2012-10-23 | 2013-02-06 | 鞍钢股份有限公司 | Method for manufacturing high-strength cold-pressed pellets |
| CN203173991U (en) * | 2013-04-02 | 2013-09-04 | 周战利 | Sealed-tank quicklime slaker |
Non-Patent Citations (2)
| Title |
|---|
| 提高球团强度、降低烟尘污染;佟树勋等;《环境污染与防治》;19890831;第11卷(第4期);一、实验部分、二实验结果与讨论 * |
| 炼钢转炉污泥综合利用;吴定国;《环境工程》;19851231(第5期);三、天钢二炼钢厂污泥球团工程设计简洁 * |
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