Recycling of ironmaking and steelmaking slags in Japan and …
The mass production of steel is inevitably accompanied by large quantities of slags. The treatment of ironmaking and steelmaking slags is a great challenge in the sustainable development of the steel industry. Japan and China are two major steel producing countries that have placed a large emphasis on developing new technologies …
Processing and Reusing Technologies for Steelmaking Slag
vi-ronmentally friendly concrete block substitute that use no natural aggregate (sand and gravel). Instead, this product utilizes a fine powder of granulated blast furnace slag, as …
Enhancing Rotary Kiln-Electric Furnace Process of Saprolitic …
How to reduce the energy consumption of the rotary kiln-electric furnace (RKEF) process has become an important issue for the stainless steel industry. The aim of this study is to reduce the energy consumption of ferronickel production from saprolite nickel laterite in the RKEF process. The effects of the slag binary basicity, FeO content, and …
Fiber-Optic Raman Probe for On-line EAF Slag Analysis
The slag chemistry in the EAF is targeted to promote phosphorus removal from the steel and to promote slag ing to shield the furnace from direct exposure to the arc at high power input. The slag's physical properties (basicity and viscosity) are directly influenced by the slag's chemical composition [3][4].
PROCESSES FOR THE DRY PROCESSING OF STEEL SLAGS …
typical process variation for dry processing stain-less steel slags is depicted in the following simpli-fied flow sheet (Fig. 6). For sake of clarity, some process steps are not …
TMS International
TMS International is the North American leader in slag processing and metal recovery. Our pioneering technologies process slag, a product of steelmaking, into useful environmentally beneficial aggregate products. Applications include road construction, asphalt, ready-mix concrete, cement, railway ballast, mining, filtration and agriculture. ...
Steel Slag—Its Production, Processing, Characteristics, and
Steel slag is a byproduct from either the conversion of iron to steel in a basic oxygen furnace, or the melting of scrap to make steel in an electric arc furnace. This paper reviews the production, processing, and characteristics of steel slag, and its ...
Chemical, Mineralogical, and Morphological Properties of Steel Slag
2.2. Electric-Arc-Furnace (EAF) Process of Steelmaking and Slag Generation. Electric-arc furnaces (mini mills) use high-power electric arcs, instead of gaseous fuels, to produce the heat necessary to melt recycled steel scrap and to convert it into high quality steel.
Sustainable and Comprehensive Utilization of Copper Slag: A …
A process tested in a pilot scale of treating converter slag was the Kennecott slag cleaning process . It was a two-stage process including a rapid reduction step to minimize the magnetite content and achieve a …
Slag Powder Making Plant|Slag Micro-powder Plant|Slag …
The slag powder making plant also called the slag micro-powder line, slag-power processing production line, and industrial production of slag-power is widely applied to …
Processing Ash and Slag Wastes from Thermal Power Stations. Part …
For existing coal-fired power plants, current methods of utilizing ash and slag waste may be considered in addressing new environmental and economic risks. However, for new power sources, environmental considerations are much more important in selecting the coal-combustion technology. Technology based on a circulating fluidized …
Processing and Reusing Technologies for Steelmaking …
The iron/steel slag processing flow is schematically shown in Fig. 2. Steelmaking slag is subjected to the following four process-es: ① solidify and cooling of the hot molten slag, ② crushing and magnetic separation treatment of the slag to recover the metal iron,
Automatic Control of Slag Line for Submerged Entry Nozzle …
This paper describes an automatic control method for the slag line for SEN during continuous casting of steel, which is an improved even erosion method based on adjusting the immersion depth of SEN with appropriate time intervals. It aims to extend the service life of SEN. This automatic control method has been applied to an actual billet …
Solutions to the Converter Slag Recycling Problem in …
Since the bulk of the scrap iron consists of oxides in the mineral phases, an increase in the capacity of the slag processing line promotes the utilization of converter scrap using reduction smelting technology.
Slag Powder Making Plant|Slag Micro-powder Plant|Slag Micro-powder Line
The slag powder making plant also called the slag micro-powder line, slag-power processing production line, and industrial production of slag-power is widely applied to produce super fine powder materials in the industries of mining, abrasive materials, refractory matter, electronic materials, ceramics, chemical engineering, health care ...
Slag Recycling and Metal Recovery
MEKA is designing and manufacturing customized steel slag processing and metal recovery plants for each project-specific purposes. Our portfolio; MEKA offers stand-alone machines, process solutions, turnkey plants, separation and sorting technology, and control and automation solutions perfectly tailored to individual requirements. ...
Electroslag Remelting Process: Part One | Total Materia
Electro Slag Remelting (ESR) is a process used for remelting and refining of steels and special alloys which are used for critical applications in aircraft, thermal and nuclear power plants, defense hardware, etc.
Superfine Slag Powder Production Line
Superfine slag powder production line has the advantages like low noise; uniform abrasion of grinding ring and grinding roller; low energy consumption; low failure rate and so on, …
Comprehensive Utilization Technology of Steel Slag
Steel slag is the waste generated in the steelmaking process and includes ferric oxide and the impurities of some infusible matters. It is the by-product when slag-forming constituents (such as fluorite, lime, and deoxidant) are added for deoxidization, desulfurization, and dephosphorization in steelmaking.
Sustainability | Free Full-Text | Sustainable Utilization of Steel Slag …
Steel slag is a large amount of residual material produced in the process of steel manufacturing. With the requirements of sustainable development in China, the utilization of steel slag has become a hot issue. Through an in-depth study on steel slag, it is apparent that it has been widely used in various fields in recent years. The resource …
Research progress of hydrogen production and CO
To promote efficient hydrogen production, CaO-based adsorbent and roasting leaching residue (LR) were prepared from steel slag, and applied to in-line pyrolysis and reforming of Chinese medicine residue (CMR). Figure 9 shows the comprehensive utilization process of steel slag. The results showed that the yield of …
Slag Grinding Production Line
The slag grinding production line is a production system specially used to process slag and make slag powder. Slag, as a by-product in the industrial production process, can be converted into valuable resources through grinding processing and used in cement …
Integrated Processing of Ash and Slag from Thermal Power …
The relevance of the studies into ash and slag from coal combustion in the thermal power sector in Eastern Transbaikalia is governed by the demand for highly efficient and environmentally clean processing technologies aimed at complete utilization of waste. The compositional analysis of the coal-fly ash—ash-and-slag geosystem is …
Slag grinding plant
Process Description CHAENG can undertake EPC turnkey services for slag / steel slag / nickel slag / manganese slag powder production line with an annual output of …
Screening machines for slag processing
Slag processing. As the world's leading manufacturer of screening machines, we offer the best screening results for processing steel mill slag, ash from waste incinerators, waste incineration plant ash, such as incinerator bottom ash …
Steelmaking Slag
Steelmaking slag, or steel slag, is a by-product from the production of steel during the conversion of hot metal to crude steel in a basic oxygen furnace, or during the melting of scrap in an EAF.The slag is generated as a melt and is a complex solution of silicates and oxides that solidify upon cooling. 11 Depending on the specific steel production …
Electric Arc Furnace Steelmaking and Slag Formation, …
The slag processing plants have similar facilities to those of aggregate plants, and standard aggregate tests (specific gravity, absorption, gradation, etc.) are also performed on steel slag aggregates. After completion of the processing, steel slags are typically separated into open-air stockpiles based on size and left to age until they are ...
Carbon mineralization of steel and iron-making slag: Paving …
Carbon mineralization technology using iron and steel-making slag was summarized. • Examinations of by-products generation and physicochemical properties were conducted.
A critical review of ash slagging mechanisms and viscosity
Gasification or combustion of coal and biomass is the most important form of power generation today. However, the use of coal/biomass at high temperatures has an inherent problem related to the ash generated. The formation of ash leads to a problematic phenomenon called slagging. Slagging is the accumulation of molten ash on the walls of …
Process Concept for the Dry Recovery of Thermal Energy of …
The process concept consists of a slag tundish and four subsequent heat exchangers. The liquid slag is poured into the slag tundish which homogenizes the slag and guarantees a constant mass flow. The heat exchangers extract thermal energy from the slag and transfer it to water or oil.