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High-capacity adsorbents from stainless steel slag for the ...

Jan 02, 2021· Adsorbent materials for the control of dye pollutants in water were synthetized from stainless steel slag (SSS) using different acid-base treatments. Using HCl (SS-Cl) and HNO3 (SS-NO3) produced high-capacity adsorbents, with BET areas of 232 m2/g and 110 m2/g respectively. Specifically, the SS-Cl had a structure of amorphous silica sponge. Treatment with H2SO4 (SS-SO4) did not …

Stainless steel slag quenching treatment system/WWSF wind ...

The WWSF automatic intelligent wind granulation method developed and designed by our company has obtained 2 invention patents and 6 utility model patents. Th...

Characteristics and Treatment Technologies of Stainless ...

In addition, the treatment processes which can recovery or utilize the valuables in the slag and other potential measures to reduce the environmental pollution of the stainless steel slag were ...

A Study of Treatment of Industrial Acidic Wastewaters with ...

Aug 25, 2021· Substituting slag with lime is projected to decrease the material input of stainless steel producers, thus decreasing the tons of by-products that are generated as a result. Moreover, if slag can be used as an effective reagent for the treatment of all kinds of industrial wastewaters, the sustainability of the whole stainless steel sector

(PDF) Understanding stainless steelmaking through ...

The slag systems of CaO-SiO2-Cr2O3 and Al2O3-CaO-MgO-SiO2-Cr2O3 were analyzed. These slag systems occur in the production of stainless steel and are important from the process metallurgy point of ...

AOD SLAG TREATMENTS TO RECOVER METAL AND TO …

Laboratory treatment tests of AOD slag from stainless steelmaking have been carried out by ... converter for stainless steel production may result in slag disintegration or dusting. The dusting is ...

Converter Process - an overview | ScienceDirect Topics

AOD converter process is the main method to produce stainless steel nowadays. The process was developed in the early 1950s in the Union Carbide Corporations Lindé division. Schematic presentation of AOD converter with top-blowing possibility is shown in Figure 1.4.18.AOD converter is provided with several sidewall nozzles.

Steelmaking Technologies Contributing to Steel Industries

The hot metal pre-treatment method, where hot metal is dephosphorized prior to refining in a converter, was ac- ... The slag generated in the converter dropped to less than 10 kg/t. ... 2.2.2 New stainless steel refining process A new stainless SRF (Steel Refining Furnace) was ...

Co-treatment of Waste From Steelmaking Processes: Steel ...

The iron and steel industry is an energy-intensive sector, and large amounts of waste/ by-products are generated during the steelmaking process, such as CO2, metallurgical slag, and wastewater. Enhancing the development and deployment of treating waste from the steelmaking process will be environment friendly and resource-saving. Capturing CO2 by steel slag (SS) via mineralization is regarded ...

Dry treatment of stainless steel slag: Magnetisation of ...

Download Citation | Dry treatment of stainless steel slag: Magnetisation of stainless steel allows efficient separation | Experts state that slag is a necessary byproduct of steel making process ...

CN1718554A - Treatment method of vanadium containing ...

A process for treating the converter's steel slag containing V includes such steps as proportionally mixing the powdered or granular carbon reducer and SiO2 contained modifier with powdered or molten said slag, reduction reaction for 0.5-1.5 hr, cooling the molten dregs while self powdering, and magnetic separation to obtain V-contained iron particles (Fe-Mn-V-P alloy) and silicate dregs.

Effect of stainless steel slag waste as a replacement for ...

Jul 01, 2017· This document studies replacing cement by stainless steel slag waste and improving the mechanical properties of the slag waste by using different types of treatments. The application of stainless steel slag waste reduces the use of raw materials for manufacturing cement and provides a profit from the large amount of waste generated.

Converter Steelmaking - ScienceDirect

Jan 01, 2014· Jan 01, 2014· In all converter processes with only top slag (i.e., without any injection of slag formers), the steel–slag interfaces on the bulk steel surface and in emulsion can be regarded as reaction sites. Comparison of results of different converter processes has revealed that in high-carbon range (0.3–0.1%C) dephosphorization is often better in BOP ...

A Review of Circular Economy Prospects for Stainless ...

The world of stainless steel production was 52 Mt in 2019, and the annual amount of slags including electric furnace, AOD converter, ladle, and casting tundish, was estimated at 15–17 Mt. Nowadays, only a minor fraction of slags from stainless steel production is utilized and a major part goes to landfilling.

Converter Stainless Steelmaking | Primetals Technologies

Steel Expert Charging calculates a cost-optimized mixture of pre-melt portions. During the process full control of process steps (e.g. decarburization, desulphurization, reduction) is provided and the Steel Expert Supervision dynamically calculates the current state of steel and slag throughout the stainless steelmaking process.

Recovery Rate of Chromium from Stainless Slag by Iron Melts

rate of chromium from stainless slag by iron melt is fairly slow, and the effective slag treatment technique is neces-sary. 3.2. Effect of Temperature Figure 4shows the results of the reduction of stainless slag by Fe–C melts at 1450, 1500 and 1600°C. The reduc-tion rate of Cr 2 O 3 in slag increased with increasing temper-

C04B 5 - Treatment of molten slag; Artificial stone from ...

CN1718554A Treatment method of vanadium containing converter steel slag ... CN1207397C Process for treating steel slag by using ... US6732547 Method for the treating stainless steel refining slag ...