CN108940519A - A kind of steel slag freezing crushing method - Google Patents
A kind of steel slag freezing crushing method Download PDFInfo
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- CN108940519A CN108940519A CN201810592665.4A CN201810592665A CN108940519A CN 108940519 A CN108940519 A CN 108940519A CN 201810592665 A CN201810592665 A CN 201810592665A CN 108940519 A CN108940519 A CN 108940519A
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- steel slag
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
- B02C19/186—Use of cold or heat for disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
- B02C2201/06—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
- Furnace Details (AREA)
Abstract
The present invention relates to a kind of steel slag freezing crushing methods, comprising the following steps: does to the steel slag of pan feeding and sorts for the first time, obtains the first steel slag and the second steel slag；Second steel slag is subjected to first time Superfreezing, third steel slag is further broken for, third steel slag is done into second of sorting, obtains the 4th steel slag and the 5th steel slag；Magnetic separation is carried out to the 5th steel slag, distinguishes output steel scrap and the 6th steel slag；6th steel slag carries out second of Superfreezing again, and the 6th steel slag is crushed into the 7th steel slag, and the 7th steel slag is carried out third time sorting, circulation step.The present invention utilizes the low temperature cold brittleness of steel slag, i.e. as temperature reduces, steel slag hardness and brittleness increase, steel slag is crushed by way of freezing, steel slag drops to a certain degree at ambient temperature, and the material of steel slag becomes fragile, mechanical property changes, broken difficulty substantially reduces, and shortens the broken time, improves crushing efficiency.
Description
Technical field
The present invention relates to a kind for the treatment of process of smelting waste steel, and in particular to a kind of steel slag freezing crushing method.
Background technique
Steel slag is main solid waste in steel-making link, is calculated according to 800,000,000 tons of national steel production capacity, generates steel-making class now
1.2 hundred million tons of steel slag.But country's Technology of Steel Slag Processing is simple, extensive；After generally going through bored heat, cooling, decomposing, sort out diameter
Big steel scrap and magnetic separation；The tailings left accounts for 80% or more of processing total amount in 20mm or more.Because without sufficiently broken,
Still containing 4% or so fe, more person's contents are even more than 5% or more.Moreover, there are serious cinder ladles for the tailings left
The problem of iron, slag iron solidification；Because of the limitation of domestic technique level, this part tailings, which continues processing, can not create economic value,
The cost bottleneck of prior art is reached, has become " chicken ribs ".
Even if by these tailings export trades, because sort not clean, particle is uneven, the too high downstream links of standard not first-class factor at
This, causes sales difficulty.Sometimes upstream will also undertake freight charges and stockpiling cost, and tailings is sent to downstream client；Cause two
Secondary processing cost is high, sells the problems such as unstable, secondary pollution is serious.
Known country encourages the raw materials such as the renewable resources such as steel slag substitution sandstone, cement, and the synthesis skill of Current Domestic processing
Art is relatively backward.So steel slag freezing crushing method is the production factors that industry needs.
Through retrieving, Chinese patent literature CN107159426A discloses that a kind of steel slag is secondary to select iron method, using vibration screening machine,
Jaw crusher, barrel magnetic separator, spiral magnetic separator, ball mill and magnetic wind joint iron dressing machine composition multiple stage crushing and magnetic separation are
System for improving the steel slag iron-content in mechanical milling process, and then reduces ore grinding power consumption, reduces workload and the abrasion of ball mill
Degree, meets the sorting requirement of different grain size slag steel.However the technique is only paid attention to select Iron grade from powder to be 40% or more
Granulated iron powder, not yet realize comprehensive utilization to steel slag.
In addition, often crushing effect is poor when existing steel slag is through jaw crushing crusher machine, after especially crushing to a certain extent, fastly
Fast rotating blade leads to that broken difficulty is big and time-consuming, steel slag freezing crushing method purport to the hammer action of particle very little
Above-mentioned main problem is being solved, economic value and social benefit are created by the comprehensive utilization of steel slag.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provide it is a kind of efficiently, energy conservation, low emission one
Kind steel slag freezing crushing method utilizes the low temperature cold brittleness of steel slag to reduce slag crushing difficulty, improves slag crushing effect.
Technical solution: in order to solve the above technical problems, a kind of steel slag freezing crushing method provided by the invention, including to steel slag into
Capable broken, screening and magnetic separation, comprising the following steps:
Step 1, steel slag vibrates pan feeding, 0~500mm of particle size range of pan feeding by feed hopper；
Step 2, the steel slag of pan feeding is done and is sorted for the first time, obtain the first steel slag and 40~500mm grade of 0~40mm grade
Second steel slag；
Step 3, the second steel slag is subjected to first time Superfreezing, the temperature of the first time Superfreezing is -50 DEG C~-200
DEG C, the time is 10~30min；
Step 4, the taking-up of the second steel slag is further broken for third steel slag, third steel slag is done into second of sorting, obtains 0-
4th steel slag of 20mm grade and the 5th steel slag of 20-500mm grade；
Step 5, magnetic separation is carried out to the 5th steel slag, distinguishes output steel scrap and the 6th steel slag；
Step 6, the 6th steel slag is subjected to second of Superfreezing again, the temperature of second of Superfreezing is -100 DEG C
~-200 DEG C, the time is 5~15min；
Step 7, the 6th steel slag is crushed into the 7th steel slag, and the 7th steel slag is carried out third time sorting, obtains 0-10mm grade
9th steel slag of the 8th steel slag and 10-500mm grade, 3 circular treatment of the 9th steel slag return step.
It preferably, is 0~-0.1MPa in pressure by the broken third steel slag of step 4, temperature carries out under the conditions of being 5~20 DEG C
Low-temperature vacuum drying, the third steel slag after drying carry out second and sort.
It preferably, is 0~-0.2MPa in pressure by broken 7th steel slag of step 7, temperature carries out under the conditions of being 5~15 DEG C
Low-temperature vacuum drying, the 7th steel slag after drying carry out third time sorting.
Preferably, in the step 1, the steel slag raw material more than 500mm cuts to 500mm hereinafter, vibrating pan feeding by feed hopper again；
In the step 2, sorting uses equipment to preselect rotary screen for the first time, and the second steel slag is broken for third steel through jaw crusher
Slag；In the step 3, first time Superfreezing uses equipment for reach in freezer, and in the step 4, what second of sorting used is set
Standby to sieve for horizontal vibration, the magnetic plant in the step 5 is drum belt magnetic separator, in the step 6, is exceeded the speed limit for the second time cold
Jelly uses equipment for reach in freezer.
Preferably, further include step 6, sieved with the steel scrap that autogenous grinding rolling barrel sieve exports step 5 as 20-40mm, 40-
Tri- grades of 200mm and 200-500mm, the steel scrap for sampling TFe > 70%；The recrement return step 3 of autogenous grinding rolling barrel sieve output
Circular treatment.
Preferably, the 4th steel slag is crushed by centrifugal crusher；The 5th steel slag of step 5 is by drum belt magnetic separation, step 7
In the 6th steel slag the 7th steel slag is broken for by impact crusher.
It preferably, further include step 8, in the tailings of 0-10mm, tailings fully enters centrifugal broken horizontal vibration sieve output grade
Broken machine is sent into strong magnetomechanical after broken；Step 9, strong magnetomechanical is selected iron powder and is exported from broken tailings, iron powder partial size 0-10mm
Sample TFe > 40%.
Preferably, the tailings of isolated fe MFe < 1% of step Final 8 magnetic separation and blast furnace granulated slag are arranged in pairs or groups by 25-50%,
Or the raw material as quotient's concrete and mortar.
Preferably, whole producing line is totally-enclosed, and is equipped with deduster, is distributed the steel that dust generates 300-400 mesh by 12 points of 1 host
Slag micro mist, uses as clinker.
The utility model has the advantages that the present invention utilizes the low temperature cold brittleness of steel slag, i.e., as temperature reduces, steel slag hardness and brittleness increase, and lead to
The mode for crossing freezing is crushed steel slag, and steel slag drops to a certain degree at ambient temperature, and the material of steel slag becomes fragile, mechanical property
It can change, cold brittleness destruction occur, in the case where ambient pressure environment increases, which is become apparent,
In the case that conventional breakers carry out slag crushing, broken difficulty is substantially reduced, and is shortened the broken time, is improved crushing efficiency；
The present invention breaches the bottleneck of domestic steel slag and tailings processing technique, both emphasized integrated artistic arrange on it is efficient, energy saving,
The characteristics such as environmental protection, but emphasis solves the slag iron freezing problem of tailings.After process of the invention, the tailings metal that leaves
Iron content MFe<1%, actually reaches metal recovery rate>99% or more, really realizes 0 discharge.Tailings partial size between 0-5mm,
50/50 proportion can be realized with blast furnace granulated slag, greatly improve comprehensive utilization value；Can also be used as quotient's concrete, concrete base-material,
Substitute the aggregate of sandstone, roadbed padding；Dust-precipitating system processing generate micro mist can directly as cement raw material, filtering material,
Chemicals, fertilizer additive, soil conditioner etc..
Detailed description of the invention
Fig. 1 is the process flow chart of the embodiment of the present invention.
Specific embodiment
Embodiment:
Steel slag freezing crushing method flow such as Fig. 1 of the present embodiment so, comprising the following steps:
1) steel slag after heat is bored is slagged tap by excavator/overhead traveling crane, is loaded into dumper, is transported to raw material terminal, flat by feeding
Platform enters vibrating feed storehouse.
2) feed hopper vibrates pan feeding, the diameter range 0-500mm of pan feeding；The steel slag raw material terminal of 500mm or more is set up individually
Environmental-protecting dust-removing pretreating zone, online processing after 500mm or less is cut to by oxygen.
3) first time sorting is carried out to steel slag using pre-selection rotary screen, obtains two kinds of grades of 40~500mm and 0~40mm.
4) wherein: the steel slag of 40~500mm grade carries out first time Superfreezing, and the temperature of first time Superfreezing is -50 DEG C
~-200 DEG C, the time is 10~30min, and the steel slag after freezing is taken out and is sent into jaw crusher, falls into jaw crushing after broken
Conveyer belt below machine is sent into horizontal vibration sieve；Wherein, the steel slag of 0-40mm grade falls directly into conveyer belt, shakes into level
Dynamic sieve.
The present invention utilizes the low temperature cold brittleness of steel slag, i.e., as temperature reduces, steel slag hardness and brittleness increase, and passes through the side of freezing
Formula is crushed steel slag, and steel slag drops to a certain degree at ambient temperature, and the material of steel slag becomes fragile, and mechanical property becomes
Change, cold brittleness destruction occur, in the case where ambient pressure environment increases, which is become apparent, broken in tradition
In the case that machine carries out slag crushing, broken difficulty is substantially reduced, and is shortened the broken time, is improved crushing efficiency.
When temperature is lower than room temperature, the brittleness of steel is gradually increased with the reduction of temperature, may result in low-temperature brittle fracture, steel
Destruction have plastic failure and brittle break, wherein brittle break is had no obvious deformation after only loading, therefore without omen before destroying, is broken
Fracture is concordant when splitting, and is in glossiness grains, and therefore, strain hardening caused by being cold worked and subsequent occurrences of strain-aging make
Steel become fragile.
In addition, by the broken third steel slag of step 4 pressure be 0~-0.1MPa, temperature be 5~20 DEG C under the conditions of carry out it is low
Temperature vacuum drying, the third steel slag after drying carry out second and sort.Steel are under low-temperature vacuum environment, when can shorten crushing
Between, make pulverized particles are tiny to reach pulverulence.
5) second is carried out to steel slag using horizontal vibration sieve to sort, obtain two kinds of grades of 0-20mm and 20-500mm.
6) wherein:
The steel slag of 0-20mm grade is sent directly into centrifugal crusher；
The steel slag of 20-500mm grade enters drum belt magnetic separation, the steel scrap feeding autogenous grinding descaling machine magneticly elected, and 20-500mm
The steel slag of grade carries out second of Superfreezing again, and the temperature of second of Superfreezing is -100 DEG C~-200 DEG C, and the time is 5~
15min；The 6th steel slag is taken out, the steel slag of 20-500mm grade is sent into impact crusher.Broken 7th steel slag is existed
Pressure is 0~-0.2MPa, and temperature carries out low-temperature vacuum drying under the conditions of being 5~15 DEG C, the 7th steel slag after drying carries out third
Secondary sorting.
7) all choosings are remaining entering impact crusher, are all crushed to 10mm grade hereinafter, again returning to horizontal vibration sieve, shape
At closed cycle, until selecting remaining all feeding centrifugal crushers.
8) roller autogenous grinding descaling machine sieves the steel scrap of 10-500mm for tri- grains of 20-40mm, 40-200mm and 200-500mm
Grade, steel scrap sample TFe > 70%；Recrement after cleaning is sieved through closed cycle back to horizontal vibration.
9) finally, into the tailings process segment.All steel slag grades all pass through centrifugal crusher in 0-10mm；After broken
It is sent into strong magnetomechanical.
10) tailings enters strong magnetomechanical, selects 0-10mm iron powder, samples TFe > 40%.
11) centrifugation goes bankrupt ground slag out, and in 5mm or less, (5-10mm is crushed insufficient grade, loops back to centrifugation through closed circuit
It is broken)；After high intensity magnetic separation separates, fe is in MFe < 1%；It can arrange in pairs or groups with blast furnace granulated slag by 25-50%, sandstone can also be substituted
Aggregate, the raw material as quotient's concrete and mortar.
12) dust pelletizing system: whole producing line is totally-enclosed；And it is equipped with deduster, accomplish dust-proof, dedusting, effective control of dust management,
Dust emission < 10mg/m3, target 5mg.Slag micro powder (the metallic iron that dust generates 300-400 mesh is distributed by 12 points of 1 host
MFe < 0.1%), it can be used directly as clinker.
Below table is that under various circumstances, the steel slag of size fractionated carries out broken time comparison:
The present invention breaches the bottleneck of domestic steel slag and tailings processing technique, both emphasized integrated artistic arrange on it is efficient, energy saving,
The characteristics such as environmental protection, but emphasis solves the slag iron freezing problem of tailings.After process of the invention, the tailings metal that leaves
Iron content MFe<1%, actually reaches metal recovery rate>99% or more, really realizes 0 discharge.Tailings partial size between 0-5mm,
50/50 proportion can be realized with blast furnace granulated slag, greatly improve comprehensive utilization value；Can also be used as quotient's concrete, concrete base-material,
Substitute the aggregate of sandstone, roadbed padding；Dust-precipitating system processing generate micro mist can directly as cement raw material, filtering material,
Chemicals, fertilizer additive, soil conditioner etc..
In the description of the present invention, it should be noted that term " first ", " second ", " third " etc. are only used for distinguishing description,
It is not understood to indicate or imply relative importance.
The present invention provides a kind of completely new structure type, thinking and method, specific implementation for a kind of steel slag freezing crushing method
There are many method and approach of the technical solution, the above is only a preferred embodiment of the present invention, it is noted that for this skill
For the those of ordinary skill in art field, various improvements and modifications may be made without departing from the principle of the present invention,
These modifications and embellishments should also be considered as the scope of protection of the present invention.Each component part being not known in the present embodiment can be used existing
Technology is realized.
Claims (9)
1. a kind of steel slag freezing crushing method, including the broken, screening and magnetic separation carried out to steel slag, which is characterized in that including with
Lower step:
Step 1, steel slag vibrates pan feeding, 0~500mm of particle size range of pan feeding by feed hopper；
Step 2, the steel slag of pan feeding is done and is sorted for the first time, obtain the first steel slag and 40~500mm grade of 0~40mm grade
Second steel slag；
Step 3, the second steel slag is subjected to first time Superfreezing, the temperature of the first time Superfreezing is -50 DEG C~-200
DEG C, the time is 10~30min；
Step 4, the taking-up of the second steel slag is further broken for third steel slag, third steel slag is done into second of sorting, obtains 0-
4th steel slag of 20mm grade and the 5th steel slag of 20-500mm grade；
Step 5, magnetic separation is carried out to the 5th steel slag, distinguishes output steel scrap and the 6th steel slag；
Step 6, the 6th steel slag is subjected to second of Superfreezing again, the temperature of second of Superfreezing is -100 DEG C
~-200 DEG C, the time is 5~15min；
Step 7, the 6th steel slag is crushed into the 7th steel slag, and the 7th steel slag is carried out third time sorting, obtains 0-10mm grade
9th steel slag of the 8th steel slag and 10-500mm grade, 3 circular treatment of the 9th steel slag return step.
2. a kind of steel slag freezing crushing method according to claim 1, it is characterised in that: by the broken third of step 4
Steel slag is 0~-0.1MPa in pressure, and temperature carries out low-temperature vacuum drying under the conditions of being 5~20 DEG C, it is dry after third steel slag into
Second of sorting of row.
3. a kind of steel slag freezing crushing method according to claim 1, it is characterised in that: by step 7 the broken 7th
Steel slag is 0~-0.2MPa in pressure, and temperature carries out low-temperature vacuum drying under the conditions of being 5~15 DEG C, it is dry after the 7th steel slag into
Row third time sorts.
4. a kind of steel slag freezing crushing method according to claim 1, it is characterised in that: in the step 1, be more than
The steel slag raw material of 500mm cuts to 500mm hereinafter, vibrating pan feeding by feed hopper again；In the step 2, sorting is used for the first time
Equipment is pre-selection rotary screen, and the second steel slag is broken for third steel slag through jaw crusher；In the step 3, exceed the speed limit for the first time cold
Jelly uses equipment for reach in freezer, in the step 4, sorts the equipment used for the second time for horizontal vibration sieve, in the step 5
Magnetic plant is drum belt magnetic separator, and in the step 6, second of Superfreezing uses equipment for reach in freezer.
5. a kind of steel slag freezing crushing method according to claim 1, it is characterised in that: it further include step 6, it is clear with autogenous grinding
The reason rotary screen steel scrap that exports step 5 sieve for tri- grades of 20-40mm, 40-200mm and 200-500mm, sample TFe >
70% steel scrap；3 circular treatment of recrement return step of autogenous grinding rolling barrel sieve output.
6. a kind of steel slag freezing crushing method according to claim 1, it is characterised in that: the 4th steel slag is by centrifugal
Broken crusher machine；The 5th steel slag of step 5 is by drum belt magnetic separation, and the 6th steel slag is broken for by impact crusher in step 7
7th steel slag.
7. a kind of steel slag freezing crushing method according to claim 1, it is characterised in that:
It further include step 8, for horizontal vibration sieve output grade in the tailings of 0-10mm, tailings fully enters centrifugal crusher, broken
Strong magnetomechanical is sent into after broken；
Step 9, strong magnetomechanical is selected iron powder and is exported from broken tailings, and iron powder partial size 0-10mm samples TFe > 40%.
8. a kind of steel slag freezing crushing method according to claim 7, it is characterised in that: the magnetic separation of the step Final 8 is isolated
Fe MFe < 1% tailings and blast furnace granulated slag arrange in pairs or groups by 25-50%, or as the raw material of quotient's concrete and mortar.
9. a kind of steel slag freezing crushing method according to claim 1, it is characterised in that: whole producing line is totally-enclosed, and matches
Standby deduster is distributed the slag micro powder that dust generates 300-400 mesh by 12 points of 1 host, uses as clinker.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111872022A (en) * | 2020-07-09 | 2020-11-03 | 湖州巨旺墙体材料有限公司 | Low-cost refractory material rapid recycling process |
| CN112774826A (en) * | 2019-11-11 | 2021-05-11 | 宁波诺客环境科技有限公司 | Low-temperature crushing method and crushing device for high-viscosity refined distillation residues |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089191A (en) * | 1993-04-12 | 1994-07-13 | 鞍山钢铁公司 | Magnetic separating, processing and recovery system for steel slag |
| CN101249498A (en) * | 2008-04-03 | 2008-08-27 | 南京钢铁集团盛达实业有限公司 | Cold steel scoria processing method |
| CN201305603Y (en) * | 2008-11-11 | 2009-09-09 | 李志成 | Combined granulating wheel used for metallurgical slag granulation |
| CN101890501A (en) * | 2010-07-05 | 2010-11-24 | 北京凯特破碎机有限公司 | Processing method for crushing slag |
| CN101928793A (en) * | 2010-07-22 | 2010-12-29 | 新兴铸管股份有限公司 | Steel slag treatment method |
| CN102688880A (en) * | 2012-06-18 | 2012-09-26 | 武汉市天沭科技发展有限公司 | Method for efficiently recovering and reselecting steel slag |
| CN102747174A (en) * | 2012-07-04 | 2012-10-24 | 新兴河北工程技术有限公司 | Process for extracting steel scrap and fine iron powder from slag by using dry method |
| CN104789718A (en) * | 2015-03-13 | 2015-07-22 | 中冶宝钢技术服务有限公司 | Steel slag recycling method |
| EP3196176A1 (en) * | 2014-09-19 | 2017-07-26 | Rolth Do Brasil Indústria, Comércio E Serviços Ltd | Process and system for eliminating the potential for ld and eaf steel slag expansion |
-
2018
- 2018-06-11 CN CN201810592665.4A patent/CN108940519A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089191A (en) * | 1993-04-12 | 1994-07-13 | 鞍山钢铁公司 | Magnetic separating, processing and recovery system for steel slag |
| CN101249498A (en) * | 2008-04-03 | 2008-08-27 | 南京钢铁集团盛达实业有限公司 | Cold steel scoria processing method |
| CN201305603Y (en) * | 2008-11-11 | 2009-09-09 | 李志成 | Combined granulating wheel used for metallurgical slag granulation |
| CN101890501A (en) * | 2010-07-05 | 2010-11-24 | 北京凯特破碎机有限公司 | Processing method for crushing slag |
| CN101928793A (en) * | 2010-07-22 | 2010-12-29 | 新兴铸管股份有限公司 | Steel slag treatment method |
| CN102688880A (en) * | 2012-06-18 | 2012-09-26 | 武汉市天沭科技发展有限公司 | Method for efficiently recovering and reselecting steel slag |
| CN102747174A (en) * | 2012-07-04 | 2012-10-24 | 新兴河北工程技术有限公司 | Process for extracting steel scrap and fine iron powder from slag by using dry method |
| EP3196176A1 (en) * | 2014-09-19 | 2017-07-26 | Rolth Do Brasil Indústria, Comércio E Serviços Ltd | Process and system for eliminating the potential for ld and eaf steel slag expansion |
| CN104789718A (en) * | 2015-03-13 | 2015-07-22 | 中冶宝钢技术服务有限公司 | Steel slag recycling method |
Non-Patent Citations (1)
| Title |
|---|
| 周立祥: "《固体废物处理处置与资源化》", 31 July 2007 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112774826A (en) * | 2019-11-11 | 2021-05-11 | 宁波诺客环境科技有限公司 | Low-temperature crushing method and crushing device for high-viscosity refined distillation residues |
| CN111872022A (en) * | 2020-07-09 | 2020-11-03 | 湖州巨旺墙体材料有限公司 | Low-cost refractory material rapid recycling process |
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Application publication date: 20181207 |