Email Adddress: [email protected]

iron recovery from bof slags

iron recovery from bof slags

Iron recovery and active residue production from

2018-2-1  An additive mixture containing kaolin and carbon powder was designed and mixed with BOF slag to induce the reduction of ferric oxides. Iron metal was then recovered from the BOF slag. The additives acted as a component regulator to improve the reactivity of the residue after recovering iron.

More

Separate Recovery of Iron and Phosphorus from BOF

The present work was undertaken to seek the possibility of the separate recovery of iron and phosphorus from BOF slags. The experiments were carried out using a plasma furnace under the conditions that BOF slags were reduced by carbon powder in coexistance of Fe-Si alloy bath where silicon presumably enhances the activity of phosphorus.

More

Phosphorus removal and metal recovery from BOF -slags

Phosphorus removal and metal recovery from BOF -slags Iron from a blast furnace, the so -called pig -iron, contains carbon as well as a range of addi- tional elements such as silicon or phosphorus, which must be removed in the steel works to

More

Metal Recovery from BOF Steel Slag by Carbo-thermic ...

2017-7-5  Metal recovery from a typical BOF slag with high basicity has been studied by carbothermic reduction. The reduction of Fe oxides and P oxides has been discussed, and optimized process conditions to recover high-grade metallic iron (>98 wt%) have been proposed.

More

Separate Recovery of Iron and Phosphorus from BOF

The present study was carried out to search for the possibility of the separate recovery of iron and phosphorus as gas from BOF slag by using graphite crucible or graphite powder with the presence of tin bath, which is considered to enhance the activity of phosphorus in iron reduced from slag or not to absorb the phosphorus vapor readily.

More

Enrichment of Fe‐Containing Phases and Recovery of

2012-1-13  Steel slag normally contains a large amount of iron and its oxides. Therefore, it is a potential renewable resource in case of inadequate iron ore supply. To recover the metals from steel slag, two types of BOF slags were remelted at 1873 K.

More

Enrichment of Fe‐Containing Phases and Recovery of

2012-1-13  Steel slag normally contains a large amount of iron and its oxides. Therefore, it is a potential renewable resource in case of inadequate iron ore supply. To recover the metals from steel slag, two types of BOF slags were remelted at 1873 K. The liquid slags were cooled using four types of cooling conditions, namely, water granulation, splashing, ...

More

RECOVERY OF VANADIUM FROM V-BEARING BOF-SLAG

2010-11-12  The results did show that in excess of 98% of vanadium could be recovered to the metal by this method, most of the iron and phosphorus was also successfully recovered to the metal. The reduced BOF-slag has a vanadium-content as low as 0.02mass% and thus has good opportunity to be used as construction material. The tested parameters important for the process are described and discussed

More

The treatment of Basic Oxygen Furnace (BOF) slag with ...

2019-1-21  Iron is recovered from steel slags as their iron content can reach 14–30wt% (Gautier et al., 2013; Lan et al., 2017). Typical methods include crushing, grinding, screening and magnetic separation. Lan et al. (2017) showed optimized recovery efficiencies of 93.20% mag-netic iron in BOF slag. Guo et al. (2018) mixed BOF slag with an ad-

More

RECOVERY OF IRON FROM COPPER FLASH SMELTING

2015-9-7  million tons are historically cumulated. Copper slag contains iron in the range of 42 to 45%, which can be recovered and recycled along with the contained copper to obtain an iron-copper alloy and a final slag rich in oxides. Therefore, the present work shows the experimental

More

Iron recovery from the coarse fraction of basic oxygen ...

In this study, a new reuse process of the coarse fraction of basic oxygen furnace (BOF) sludge based on iron recovery by the ferrous sulfate production was proposed. This study was based on three main steps: (i) characterization of the steel waste, (ii) evaluation and optimization of the recycling p

More

Evaluation of a BOF Slag Recovery Treatment combining ...

2015-9-7  other applications, where iron would be an impurity. This is the reason why, after cooling, the steel slags are round and the iron recovered by magnetic separation g (Horii et al. 2012). he connection between iron recovery ratio and cooling conditions T by applying wet magnetic separation (Wang et al. 2012). has been investigated

More

BOF Slag Hot-stage Engineering towards Iron

BOF Slag Hot-stage Engineering towards Iron Recovery and Use as Binders . By Chunwei Liu. ... To reveal the influence of basicity and oxygen partial pressure on the mineralogical and morphological modification of BOF slag, original and SiO2 modified slags were re-melted and solidified under argon and/or air atmosphere followed by slow cooling ...

More

Slag recycling - recovery

The likewise large quantities of 3.52 Mta for BOF slag and 0.91 Mta for EAF slag relate to their use as a filler in the construction industry. 3.4 Other countries. In China, the utilization of iron and steel slags has increased significantly in recent years.

More

RECOVERY OF IRON FROM COPPER FLASH SMELTING

2015-9-7  Recovery of Iron from Copper Flash Smelting Slags Figure 3 shows the rapid decreasing of copper content in the slag during the first 15 min-utes with the graphite rod introduced into the melt, while the iron concentration is main-tained almost constant over same period of time, suggesting that a selective reduction

More

The treatment of Basic Oxygen Furnace (BOF) slag with ...

2019-1-21  Iron is recovered from steel slags as their iron content can reach 14–30wt% (Gautier et al., 2013; Lan et al., 2017). Typical methods include crushing, grinding, screening and magnetic separation. Lan et al. (2017) showed optimized recovery efficiencies of 93.20% mag-netic iron in BOF slag. Guo et al. (2018) mixed BOF slag with an ad-

More

Separation and Recovery of Phosphorus from

for Iron and Steel Statistics, by assuming an average phos-phorus concentration of 0.01% in steels. Iron and steel slags can be divided broadly into blast fur-nace slag and steelmaking slag: the latter can be subdivided into hot-metal pretreatment slag, basic oxygen furnace (BOF) slag, and electric arc furnace (EAF) slag. Because

More

Possible Uses of Steelmaking Slag in Agriculture: An

2018-9-25  Steelmaking slag deriving from BOF process (using the Linz-Donawitz (LD) converter) comes from the pig iron refining process, wh ich converts molten pig iron and steel scraps into high quality steel. Most slags from steel pl ant derive from this pr ocess, with an average of 150-200 kg of slag generated per tonne of st eel produced.

More

Recovery of Calcium and Magnesium bearing phases from Iron ...

2020-3-1  Since iron– and steelmaking slags are a mixture of numerous types of minerals, understanding the dissolution behavior of various phases in solution system is of critical importance for Ca/Mg recovery. In this work, seven Ca/Mg–bearing phases and four typical ...

More

王德永 - 苏州大学 - 沙钢钢铁学院 - X-MOL

Enrichment of Fe-containing phases and recovery of iron and its oxides by magnetic separation from BOF slags. Steel Research International, 2012, 83(2): 189-196 10. Mathematical modeling of refining of stainless steel in smelting reduction converter using chromium ore.

More

Iron recovery from the coarse fraction of basic oxygen ...

In this study, a new reuse process of the coarse fraction of basic oxygen furnace (BOF) sludge based on iron recovery by the ferrous sulfate production was proposed. This study was based on three main steps: (i) characterization of the steel waste, (ii) evaluation and optimization of the recycling p

More

Recovery Of Iron From Steel Furnace Slag - kmcbud.pl

Metal recovery: steel slags.They are produced in basic oxygen furnace (bof) and electric arc furnace (eaf).Because iron in the steel slags is normally encountered in the form of steel (710 %), iron oxide and iron bearing minerals, the recovery of iron is achieved by

More

BOF Slag Hot-stage Engineering towards Iron

BOF Slag Hot-stage Engineering towards Iron Recovery and Use as Binders . By Chunwei Liu. ... To reveal the influence of basicity and oxygen partial pressure on the mineralogical and morphological modification of BOF slag, original and SiO2 modified slags were re-melted and solidified under argon and/or air atmosphere followed by slow cooling ...

More

SWEREA MEFOS PERSPECTIVE ON METAL RECOVERY

2013-4-9  Recovery of vanadium from Swedish BOF-slag has been developed in the IPBM-project. The experimental set-up of the 3 MW DC arc furnace at Swerea MEFOS is shown in Figure 3. This concept was further tested and verified in a recently performed pilot campaign for co-treatment of BOF-slags and BF-sludge within the VILD-project.

More

The treatment of Basic Oxygen Furnace (BOF) slag with ...

2019-1-21  Iron is recovered from steel slags as their iron content can reach 14–30wt% (Gautier et al., 2013; Lan et al., 2017). Typical methods include crushing, grinding, screening and magnetic separation. Lan et al. (2017) showed optimized recovery efficiencies of 93.20% mag-netic iron in BOF slag. Guo et al. (2018) mixed BOF slag with an ad-

More

Recover Manganese - Fluosilicic Acid Leaching

2018-9-16  BOF slags range in manganese content from 1 to 7 pct and average 3.5 pct. BOF slap are a possible domestic source of manganese the United States could use if economical recovery methods were found. The U.S. Bureau of Mines examined manganese recovery from steelmaking slags

More

Study on Recovering Iron from Smelting Slag by ...

In order to recover the iron in copper smelting slag quenched with water in smelters, carbothermic reduction was adopted to reduce the iron oxide existing in different phase such as fayalite,vitreous and magnetite in the slag to metal iron. In the optimum conditions, it was demonstrated that the metallization efficiency of iron could reach more than 86.1%.

More

Possible Uses of Steelmaking Slag in Agriculture: An

2018-9-25  Steelmaking slag deriving from BOF process (using the Linz-Donawitz (LD) converter) comes from the pig iron refining process, wh ich converts molten pig iron and steel scraps into high quality steel. Most slags from steel pl ant derive from this pr ocess, with an average of 150-200 kg of slag generated per tonne of st eel produced.

More

Recovery of iron and manganese values from

2010-9-15  “Recovery of iron from the liquid slags with further electro-magnetic separation” (Poster) Anna Semykina, Volodymyr Shatokha and Seshadri Seetharaman Seetharaman-Seminar, materials processing towards properties, June 2010, Sigtuna, Sweden. 3. “The effect of MnO addition on the spinel crystal growth during oxidation of FeO-containing slags”

More

王德永 - 苏州大学 - 沙钢钢铁学院 - X-MOL

Enrichment of Fe-containing phases and recovery of iron and its oxides by magnetic separation from BOF slags. Steel Research International, 2012, 83(2): 189-196 10. Mathematical modeling of refining of stainless steel in smelting reduction converter using chromium ore.

More