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Advantages and disadvantages of steel slag treatment

Advantages fast slag discharge simple process less land occupation less investment small size of steel slag after treatment (about 5mm) stable performance. Disadvantages improper operation during water quenching of molten slag is prone to explosion and the uniformity of steel slag grain size is poor. Can only handle liquid slag.

(PDF) Treatments of Magnesium Slag to Recycle Waste

The slag powder after mixing with of borates and sintered at 1200°C in 56 hours has become volume stable aggregates. It is then possible to use the treated slag in constructions

Study on a Coal Washing Wastewater Treatment Process

 · Study on a Coal Washing Wastewater Treatment Process and Its Application with Carbide Slag and Polyacrylamide Yafeng Li Xiaoning Zhang Environmental and municipal school of Shenyang Jianzhu University Shenyang China 110168 Email yafengli88sina

Utilizing Iron and Steel Slag s in Environmental

 · A waste water treatment plant (WWTP) for the township of Waiuku incorporates iron slag in its treatment process as an aggregate source. The plant was installed in 1993 and handles up to 3000m³ a day of treated effluent from the settling ponds. The WWTP is comprised of large aggregate filter beds with a hydraulic residence time of two days the

Economic and environmentally beneficial treatment of

201227 · ECONOMIC ENVIRONMENTALLY BENEFICIAL TREATMENT OF SLAGS IN DC ARC FURNACES 363 Introduction A common feature shared by all pyrometallurgical smelting processes is the production of slag. Slag is usually a byproduct of metal production although there are processes (such as ilmenite smelting for example) where the slag is the principal product.

Technical Report UDC 669 . 162 . 275 . 2 Development of

 · slag treatment process. 2. Basic Studies on Slag Treatment Change in social requirements regarding iron/steel slag The public concern about environmental pollution has grown since the 1970s and accordingly legal regulations such as the Air Pollution Control Act and the Water Quality Pollution Control Act have been enacted.

Jorn Bohlke et al. Treatment of Industrial Lead and Zinc

 · process S the Plasmazinc process 6 or the Enviroplas process 7 . Most of these processes are designed for rather constant conditions and display disadvantages in flexibility and efficiency. A very flexible reactor for a slag treatment is the submerged arc furnace (SAF) which permits high

Cotreatment of Waste From Steelmaking Processes

of treating waste from the steelmaking process will be environment friendly and resourcesaving. Capturing CO2 by steel slag (SS) via mineralization is regarded to be an excellent choice due to the high basicity of the slag. In this paper recent research on the steel slagbased carbon capture and storage (SSCCS) by mineralization was summarized.

UDC 669 . 054 . 82 669 . 184 . 244 . 66 Processing and

201394 · The accelerated aging treatment processes that have been put into practical use include "steam aging treatment" that uses hightemperature steam "hot water aging treatment" that immerses the slag in hot water and "high pressure aging treatment" that causes the slag to react with steam in a vessel under high pressure ( MPa).

Granulation–Carbonation Treatment of Alkali Activated

 · The product of the granulation treatment carried out with water (G_W) presented a similar leaching behaviour to the untreated slag. Instead for the granules obtained from the test performed with the alkali solution (G_AA) the pH slightly decreased (remaining above the Italian limit for reuse) Ca Ba and Cr release decreased while Si and Na

Basics of slag productionArticle on the slag industry

 · Watercooling was also important in the foaming process where the liquid slag was poured over a group of upwardfacing sprays to give a lightweight pumicelike product. Environmental safeguards are needed with such processes partly for the dust or slag fibres that may be generated but also because the sulphur in the slag can react to release

(PDF) Treatments of Magnesium Slag to Recycle Waste from

The slag powder after mixing with of borates and sintered at 1200°C in 56 hours has become volume stable aggregates. It is then possible to use the treated slag in constructions

An Assessment of Iron and Steel Slag for treatment of

 ·  Assessment of iron and steel slag products as a treatment media 9 3. Results and Discussion 10 The environmental impact of different iron and steel slag 10 Removal of contaminants from stormwater by filter media 10 Assessment of slag as a treatment media

Decrease of Material Burden in a Novel AlkaliSaving

 · Reduction Process. The proposed process for nickel slag reduction treatment is compared with Mu et al. s process 4 as shown in Fig. 1a shows that the desilication ratio of Mu et al. s process reaches wt. at the roasting time of 20 min the roasting temperature of 823 K the alkali–ore ratio of 4 1 and the stirring speed of 400 rpm.

Reaction Mechanisms of Blast Furnace Slag in Liquid and

mal treatment in vapor states (a) Before treatment (b) 200°C 24h (c) 200°C 48h. Fig. 5. SEM images of the BF slag (a) Before treatment (b) After hydrothermal treatment in liquid state with distilled water.

Application of Hydrothermal Treatment on BF Slag and

Hydrothermal Treatment of BF Slag and Glass The composition of the watercooled BF slag used is summarized in Tab le 1. SiO 2 –Na 2 O–B 2 O 3 glass was prepared from reagent grade quartz Na 2 CO 3 and H 3 BO 3. Forty grams of mixture of these powders corresponding to a composition of 63mass SiO 2 –27mass Na 2 O–10mass B 2 O 3

Technical Review UDC 669 . 1 . 054 . 82 Overview of Iron

 ·  Slag treatment processes Figure 2 1) shows the flow diagram of the processes to treat different kinds of iron/steel slag. (1) Cooling and treatment of BF slag As seen in Fig. 1 roughly 80 of BF slag is rapidly cooled with highpressure water jets from the molten state at about 1 500°C into glassy sand called granulated slag.

Steel slag in China Treatment recycling and management

201881 · Steel Slag Treatment Technology Standard (GB/T ) Enacted May 9 2013 Effective February 1 2014 Manages the control of waste water waste gas and noise produced in the steel slag treatment process Standard for Pollution on the Storage and Disposal Site for General Industrial Solid Wastes (GB ) Enacted December 28 2001

Application of Hydrothermal Treatment on BF Slag and

Hydrothermal Treatment of BF Slag and Glass The composition of the watercooled BF slag used is summarized in Tab le 1. SiO 2 –Na 2 O–B 2 O 3 glass was prepared from reagent grade quartz Na 2 CO 3 and H 3 BO 3. Forty grams of mixture of these powders corresponding to a composition of 63mass SiO 2 –27mass Na 2 O–10mass B 2 O 3