CN206778645U - A secondary iron selection system for steel slag - Google Patents
A secondary iron selection system for steel slag Download PDFInfo
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- CN206778645U CN206778645U CN201720457509.8U CN201720457509U CN206778645U CN 206778645 U CN206778645 U CN 206778645U CN 201720457509 U CN201720457509 U CN 201720457509U CN 206778645 U CN206778645 U CN 206778645U
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 239000002893 slag Substances 0.000 title claims abstract description 64
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 title abstract description 59
- 239000010959 steel Substances 0.000 title abstract description 59
- 239000006148 magnetic separator Substances 0.000 claims abstract description 49
- 238000012216 screening Methods 0.000 claims abstract description 32
- 239000002245 particle Substances 0.000 claims abstract description 23
- 239000000696 magnetic material Substances 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract description 9
- 238000007885 magnetic separation Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 238000000227 grinding Methods 0.000 abstract description 7
- 238000000498 ball milling Methods 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 3
- 238000009825 accumulation Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 229910052681 coesite Inorganic materials 0.000 description 3
- 229910052906 cristobalite Inorganic materials 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 229910052682 stishovite Inorganic materials 0.000 description 3
- 229910052905 tridymite Inorganic materials 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229910052918 calcium silicate Inorganic materials 0.000 description 2
- 235000012241 calcium silicate Nutrition 0.000 description 2
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 2
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 235000019976 tricalcium silicate Nutrition 0.000 description 2
- 229910021534 tricalcium silicate Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- ASTZLJPZXLHCSM-UHFFFAOYSA-N dioxido(oxo)silane;manganese(2+) Chemical compound [Mn+2].[O-][Si]([O-])=O ASTZLJPZXLHCSM-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000010450 olivine Substances 0.000 description 1
- 229910052609 olivine Inorganic materials 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229910052883 rhodonite Inorganic materials 0.000 description 1
- 238000010187 selection method Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Curing Cements, Concrete, And Artificial Stone (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
本实用新型涉及一种钢渣二次选铁系统。本实用新型通过震动筛选机、颚式破碎机、滚筒磁选机、螺旋磁选机、球磨机、磁风联合选铁机构成能够对钢渣进行多级破碎磁选的系统，保证球磨过程中的钢渣含铁量较高，有效降低磨矿功耗，减小球磨机的工作负荷和磨损度，同时能够实现不同粒度渣钢的分选要求，大幅提高了钢渣磨选中的金属回收率和品质，减少了钢渣尾渣的堆积。
The utility model relates to a secondary iron separation system for steel slag. The utility model is a system capable of performing multi-stage crushing and magnetic separation on steel slag through a vibrating screening machine, a jaw crusher, a drum magnetic separator, a spiral magnetic separator, a ball mill, and a magnetic wind combined iron separation machine, which ensures that the iron content of the steel slag in the ball milling process is high, effectively reduces the power consumption of grinding, reduces the workload and wear of the ball mill, and can achieve the separation requirements of slag steel of different particle sizes, greatly improves the metal recovery rate and quality in the steel slag grinding, and reduces the accumulation of steel slag tailings.
Description
技术领域technical field
本实用新型涉及一种钢渣二次选铁系统。The utility model relates to a steel slag secondary iron selection system.
背景技术Background technique
钢渣是钢铁企业的主要废渣之一，其排放量约为钢产量的15～20%，我国每年的钢渣排放量在8000万吨以上，若不处理和综合利用，钢渣会占用越来越多的土地、污染环境、造成资源的浪费、影响钢铁工业的可持续发展。Steel slag is one of the main waste slags of iron and steel enterprises, and its discharge is about 15-20% of steel production. The annual discharge of steel slag in my country is more than 80 million tons. If it is not treated and comprehensively utilized, steel slag will occupy more and more land, pollute the environment, cause waste of resources, and affect the sustainable development of the steel industry.
钢渣中主要矿相为硅酸二钙或硅酸三钙渣，碱度低的钢渣含有橄榄石(CaO•RO•SiO2)、蔷薇辉石(3CaO•RO•2SiO2)、RO相，碱度高的钢渣含有硅酸二钙(2CaO•SiO2)和硅酸三钙(3CaO•SiO2)。转炉炼钢过程中，因造渣形成的熔融转炉渣具有一定的黏性而夹裹部分金属铁、FeO和Fe3O4等成分；钢渣中金属铁粒及含铁物料分布极不均匀、结晶粒度微细、与硅钙质固溶体嵌布关系紧密，较难单体解离，钢渣要达到较好的分选效果必须进行磨细，以便单体解离后再进行磁选，这样才能较好地将钢渣中铁质成分与其它氧化物分离。由于钢渣韧性大、易碎性差，并且含有一定的金属铁粒，既难破又难磨，粉磨效率低、电耗高、成本高，如何提高粉磨效率及金属回收率，降低粉磨电耗，直接影响钢渣资源的综合利用水平。The main mineral phase in steel slag is dicalcium silicate or tricalcium silicate slag, and steel slag with low alkalinity contains olivine (CaO•RO•SiO2), rhodonite (3CaO•RO•2SiO2), RO phase, and high alkalinity The steel slag contains dicalcium silicate (2CaO•SiO2) and tricalcium silicate (3CaO•SiO2). In the process of converter steelmaking, the molten converter slag formed by slag has a certain viscosity and encloses some components such as metallic iron, FeO and Fe3O4; the distribution of metallic iron particles and iron-containing materials in steel slag is extremely uneven, and the crystallization particle size is fine, It is closely related to the embedding of silicon-calcium solid solution, and it is difficult to dissociate the monomers. To achieve a better separation effect, the steel slag must be ground so that the monomers can be dissociated before magnetic separation, so that the iron in the steel slag can be better separated. Plasma components are separated from other oxides. Because steel slag has high toughness, poor fragility, and contains certain metal iron particles, it is difficult to break and grind, and the grinding efficiency is low, the power consumption is high, and the cost is high. How to improve the grinding efficiency and metal recovery rate and reduce the grinding electricity Consumption directly affects the comprehensive utilization level of steel slag resources.
目前，国内对钢渣的加工工艺一般为：从炼钢转炉通过渣罐送来的高温熔融液态渣，倒入到钢渣堆放场后，在打水冷却过程中，钢渣粉化至250mm以下，粉化后的钢渣采用电磁盘选出高高磁物料，高高磁物料再采用人工挑选的方法分选为铁铊钢和一次渣钢，电磁盘选出的一次低磁物料采用震动筛分选出粒度为80mm以上和80mm以下的物料，80mm以上物料采用锤式破碎机破碎至80mm以下后再与筛分得到的80mm以下物料混合后，送到一级辊筒磁选机进行磁选，得到高高磁的二次渣钢与二次低磁物料，将上述过程中得到的一次渣钢、二次渣钢混合后采用二次球磨机进行磨细，控制渣钢中非粒铁料粒度-200目以下含量占80%以上，但渣钢中铁粒保持原有粒度，球磨物料再采用二次磁风联合选铁机进行磁选，可得到满足转炉生产需要的粒铁，二次低磁物料作为固体废料进行堆存；可以看出，目前钢渣这种简单的破碎-筛分-磁选选铁工艺，由于锤式破碎机破碎后的钢渣粒度大、含铁量低，球磨过程耗时长且对球磨机损耗大，同时，选别后产品为粒钢和钢渣尾渣，粒铁品质差，尾渣的含铁量较高，缺乏对尾渣进一步选铁工艺，使钢渣资源利用受到限制。At present, the domestic processing technology for steel slag is generally as follows: the high-temperature molten liquid slag sent from the steelmaking converter through the slag tank is poured into the steel slag storage yard, and the steel slag is pulverized to less than 250mm during the cooling process of water pumping. The final steel slag is selected with high and high magnetic materials by electromagnetic disk, and the high and high magnetic materials are sorted into iron thallium steel and primary slag steel by manual selection method, and the primary low magnetic material selected by electromagnetic disk is selected by vibration screening The material is above 80mm and below 80mm. The material above 80mm is crushed to below 80mm by a hammer crusher, and then mixed with the material below 80mm obtained by screening, and then sent to the first-stage roller magnetic separator for magnetic separation to obtain high Magnetic secondary slag steel and secondary low magnetic material, the primary slag steel and secondary slag steel obtained in the above process are mixed and then ground by a secondary ball mill to control the particle size of the non-granular iron material in the slag steel - below 200 mesh The content accounts for more than 80%, but the iron particles in the slag steel maintain the original particle size. The ball milled material is then magnetically separated by a secondary magnetic wind combined iron separator to obtain granular iron that meets the needs of converter production. The secondary low magnetic material is used as solid waste. It can be seen that the current simple crushing-screening-magnetic separation iron separation process for steel slag, due to the large particle size and low iron content of the steel slag crushed by the hammer crusher, the ball milling process takes a long time and consumes a lot of energy to the ball mill. At the same time, the products after sorting are granular steel and steel slag tailings. The quality of granular iron is poor, and the iron content in tailings is high. There is a lack of further iron separation technology for tailings, which limits the utilization of steel slag resources.
实用新型内容Utility model content
本实用新型的目的是针对现有技术存在的问题提供一种钢渣二次选铁系统。The purpose of the utility model is to provide a secondary iron selection system for steel slag aiming at the problems existing in the prior art.
本实用新型的钢渣二次选铁系统，包括钢渣仓、一级震动筛选机、一级颚式破碎机、一级滚筒磁选机、二级震动筛选机、二级颚式破碎机、二级滚筒磁选机、辊压机、螺旋磁选机、球磨机和磁风联合选铁机，所述钢渣仓与一级震动筛选机连接，一级震动筛选机的小颗粒出料端与一级滚筒磁选机连接，一级震动筛选机的大颗粒出料端通过一级颚式破碎机与一级滚筒磁选机连接；所述一级滚筒磁选机的低磁物料出料端与二级震动筛选机连接，二级震动筛选的小颗粒出料端与二级滚筒磁选机连接，二级震动筛选机的大颗粒出料端通过二级颚式破碎机与二级滚筒磁选机连接；所述二级滚筒磁选机的低磁物料出料端通过辊压机与螺旋磁选机连接；所述一级滚筒磁选机、二级滚筒磁选机和螺旋磁选机的高磁物料出料端通过球磨机与磁风联合选铁机连接。The steel slag secondary iron selection system of the utility model includes a steel slag bin, a primary vibrating screening machine, a primary jaw crusher, a primary drum magnetic separator, a secondary vibrating screening machine, a secondary jaw crusher, a secondary Drum magnetic separator, roller press, spiral magnetic separator, ball mill and magnetic air combined iron separator, the steel slag bin is connected with the primary vibration screening machine, the small particle discharge end of the primary vibration screening machine is connected with the primary drum The magnetic separator is connected, and the large particle discharge end of the primary vibration screening machine is connected with the primary drum magnetic separator through the primary jaw crusher; the low magnetic material discharge end of the primary drum magnetic separator is connected with the secondary The vibration screening machine is connected, the small particle discharge end of the secondary vibration screening is connected with the secondary drum magnetic separator, the large particle discharge end of the secondary vibration screening machine is connected with the secondary drum magnetic separator through the secondary jaw crusher The low-magnetic material discharge end of the secondary drum magnetic separator is connected with the spiral magnetic separator through a roller press; the high magnetic The material discharge end is connected with the magnetic wind combined iron separator through the ball mill.
本实用新型具有以下有益效果：The utility model has the following beneficial effects:
本实用新型通过震动筛选机、颚式破碎机、滚筒磁选机、螺旋磁选机、球磨机、磁风联合选铁机构成能够对钢渣进行多级破碎磁选的系统，保证球磨过程中的钢渣含铁量较高，有效降低磨矿功耗，减小球磨机的工作负荷和磨损度，同时能够实现不同粒度渣钢的分选要求，大幅提高了钢渣磨选中的金属回收率和品质，减少了钢渣尾渣的堆积。The utility model constitutes a system capable of multi-stage crushing and magnetic separation of steel slag by vibrating screening machine, jaw crusher, drum magnetic separator, spiral magnetic separator, ball mill, and magnetic wind combined iron separator, so as to ensure the steel slag in the ball milling process The iron content is high, which can effectively reduce the grinding power consumption, reduce the workload and wear of the ball mill, and at the same time meet the separation requirements of slag steel with different particle sizes, greatly improving the recovery rate and quality of metals selected by steel slag grinding, reducing the Accumulation of steel slag tailings.
附图说明Description of drawings
图1为本实用新型的系统连接图。Fig. 1 is the system connection diagram of the present utility model.
具体实施方式detailed description
如图1所示一种钢渣二次选铁系统，包括钢渣仓1、一级震动筛选机2、一级颚式破碎机3、一级滚筒磁选机4、二级震动筛选机5、二级颚式破碎机6、二级滚筒磁选机7、辊压机8、螺旋磁选机9、球磨机10和磁风联合选铁机11，所述钢渣仓1与一级震动筛选机2连接，一级震动筛选机2的小颗粒出料端与一级滚筒磁选机4连接，一级震动筛选机2的大颗粒出料端通过一级颚式破碎机3与一级滚筒磁选机4连接；所述一级滚筒磁选机4的低磁物料出料端与二级震动筛选机5连接，二级震动筛选5的小颗粒出料端与二级滚筒磁选机7连接，二级震动筛选机5的大颗粒出料端通过二级颚式破碎机6与二级滚筒磁选机7连接；所述二级滚筒磁选机7的低磁物料出料端通过辊压机8与螺旋磁选机9连接；所述一级滚筒磁选机4、二级滚筒磁选机5和螺旋磁选机9的高磁物料出料端通过球磨机10与磁风联合选铁机11连接。As shown in Figure 1, a steel slag secondary iron separation system includes a steel slag bin 1, a primary vibrating screening machine 2, a primary jaw crusher 3, a primary drum magnetic separator 4, a secondary vibrating screening machine 5, and a secondary vibrating screening machine 5. First-level jaw crusher 6, second-level drum magnetic separator 7, roller press 8, spiral magnetic separator 9, ball mill 10 and magnetic wind combined iron separator 11, the steel slag bin 1 is connected with the first-level vibration screening machine 2 , the small particle discharge end of the primary vibration screening machine 2 is connected with the primary drum magnetic separator 4, and the large particle discharge end of the primary vibration screening machine 2 passes through the primary jaw crusher 3 and the primary drum magnetic separator 4 connected; the low-magnetic material discharge end of the first-stage drum magnetic separator 4 is connected with the secondary vibration screening machine 5, and the small particle discharge end of the secondary vibration screening 5 is connected with the secondary drum magnetic separator 7, and the second The large particle discharge end of the first-stage vibration screening machine 5 is connected with the second-stage drum magnetic separator 7 through the second-stage jaw crusher 6; the low-magnetic material discharge end of the second-stage drum magnetic separator 7 passes through the roller press 8 Connected with the spiral magnetic separator 9; the high-magnetic material discharge end of the first-stage drum magnetic separator 4, the second-stage drum magnetic separator 5 and the spiral magnetic separator 9 is connected with the magnetic wind combined iron separator 11 through a ball mill 10 .
采用本实用新型对钢渣进行二次选铁的过程如下：The process of adopting the utility model to carry out secondary iron selection to steel slag is as follows:
钢渣仓1中储存由经过一次选铁后粒度小于80mm的钢渣，该钢渣通过一级震动筛选机2筛选后，粒度小于20mm的钢渣直接输送至一级滚筒磁选机4，粒度大于20mm的钢渣通过一级颚式破碎机3破碎至20mm以下输送至一级滚筒磁选机4，经过一级滚筒磁选机4磁选后的低磁性钢渣进入二级震动筛选机5筛选，粒度大于5mm的钢渣通过二级颚式破碎机6破碎至5mm以下输送至二级滚筒磁选机7，经过二级滚筒磁选机7磁选后的低磁性钢渣进入辊压机8辊压至粒度1mm以下，在通过螺旋磁选机9磁选，通过一级滚筒磁选机4、二级滚筒磁选机7和螺旋磁选机9磁选得到的磁性钢渣输送至球磨机10球磨，最后通过磁风联合选铁机11选铁得到高品质粒铁粉。Steel slag bin 1 stores steel slag with a particle size of less than 80mm after a primary iron selection. After the steel slag is screened by the first-stage vibration screening machine 2, the steel slag with a particle size of less than 20mm is directly transported to the first-stage drum magnetic separator 4. Crushed by the first-stage jaw crusher 3 to less than 20 mm, it is transported to the first-stage drum magnetic separator 4, and the low-magnetic steel slag after magnetic separation by the first-stage drum magnetic separator 4 enters the second-stage vibrating screening machine 5 for screening, and the slag with a particle size greater than 5 mm is screened. The steel slag is crushed by the secondary jaw crusher 6 to less than 5 mm and transported to the secondary drum magnetic separator 7. The low-magnetic steel slag after magnetic separation by the secondary drum magnetic separator 7 enters the roller press 8 and is rolled to a particle size of less than 1 mm. After being magnetically separated by the spiral magnetic separator 9, the magnetic steel slag obtained by the magnetic separation of the first-stage drum magnetic separator 4, the second-stage drum magnetic separator 7 and the spiral magnetic separator 9 is transported to the ball mill 10 for ball milling, and finally passed through the magnetic wind combined separation. Iron machine 11 selects iron to obtain high-quality granular iron powder.
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| CN201720457509.8U CN206778645U (en) | 2017-04-27 | 2017-04-27 | A secondary iron selection system for steel slag |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108144727A (en) * | 2018-01-30 | 2018-06-12 | 北京博岳恒科技发展有限公司 | A kind of modularization aggregate production equipment |
| CN108393177A (en) * | 2018-02-09 | 2018-08-14 | 中冶宝钢技术服务有限公司 | Ground slag machining production line |
| CN108452923A (en) * | 2018-01-30 | 2018-08-28 | 北京博岳恒科技发展有限公司 | A kind of broken aggregate production equipment of double jaw type |
| CN109647608A (en) * | 2019-01-06 | 2019-04-19 | 明拓集团铬业科技有限公司 | A kind of high production capacity high carbon ferro-chrome finishing equipment |
| CN110586302A (en) * | 2019-10-24 | 2019-12-20 | 广东石油化工学院 | Recovery system and recovery method for multiple metal elements in metallurgical slag |
| CN112642580A (en) * | 2020-12-01 | 2021-04-13 | 湖北理工学院 | Disposal method for gradient utilization of steel slag |
| CN113466079A (en) * | 2021-06-30 | 2021-10-01 | 重庆钢铁股份有限公司 | Method for detecting component content of steel slag |
| CN114247563A (en) * | 2021-11-20 | 2022-03-29 | 酒泉钢铁(集团)有限责任公司 | A method for separating carbon residue from iron ore direct reduction material |
| CN117414926A (en) * | 2023-10-27 | 2024-01-19 | 山东科技大学 | Steel slag grinding system based on multistage grinding and multistage sorting |
-
2017
- 2017-04-27 CN CN201720457509.8U patent/CN206778645U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108144727A (en) * | 2018-01-30 | 2018-06-12 | 北京博岳恒科技发展有限公司 | A kind of modularization aggregate production equipment |
| CN108452923A (en) * | 2018-01-30 | 2018-08-28 | 北京博岳恒科技发展有限公司 | A kind of broken aggregate production equipment of double jaw type |
| CN108393177A (en) * | 2018-02-09 | 2018-08-14 | 中冶宝钢技术服务有限公司 | Ground slag machining production line |
| CN109647608A (en) * | 2019-01-06 | 2019-04-19 | 明拓集团铬业科技有限公司 | A kind of high production capacity high carbon ferro-chrome finishing equipment |
| CN110586302A (en) * | 2019-10-24 | 2019-12-20 | 广东石油化工学院 | Recovery system and recovery method for multiple metal elements in metallurgical slag |
| CN112642580A (en) * | 2020-12-01 | 2021-04-13 | 湖北理工学院 | Disposal method for gradient utilization of steel slag |
| CN113466079A (en) * | 2021-06-30 | 2021-10-01 | 重庆钢铁股份有限公司 | Method for detecting component content of steel slag |
| CN113466079B (en) * | 2021-06-30 | 2023-05-16 | 重庆钢铁股份有限公司 | Method for detecting content of steel slag components |
| CN114247563A (en) * | 2021-11-20 | 2022-03-29 | 酒泉钢铁(集团)有限责任公司 | A method for separating carbon residue from iron ore direct reduction material |
| CN117414926A (en) * | 2023-10-27 | 2024-01-19 | 山东科技大学 | Steel slag grinding system based on multistage grinding and multistage sorting |
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