Comprehensive utilisation of blast furnace slag
Compared with the internal cooling double drum method, the single drum process has a low ability to crush granulated slag, incomplete slag crushing, wide particle size distribution, only 50-60% of the physical sensible heat can be recovered, and the rest of the heat is wasted due to incomplete crushing is not absorbed by the heat exchange ...
Study on the composition and structure characteristics and …
The results show that the turbine airflow classification method can realize both classification and separation of the CWSFS, but the disc crushing method has a poor effect on the dissociation of residual carbon in fine slag, indicating that the grinding-based crushing method is not conducive to the effective dissociation between residual carbon ...
Numerical Simulation of the Slag Granulation Process in …
method coupled with level-set and volume of uid (VOF) to successfully studied the process of liquid jet crushing. Wang et al. (2021a, b) used the VOF model based on large ... of the slag crushing process and its internal mechanisms in conventional experiments due to poor working links, limited measurement means, and high costs. Numerical simulation
What is a Slag Crusher Machine and How Does it …
Slag Crusher Machines play a critical role in the steel recycling process by crushing and processing slag, a byproduct of steel production. These machines help to reduce waste and environmental impact, while also …
Utilization of Converter Slag from Nickel …
The method involves leaching the slag with hydrochloric acid in the presence of ferric ions. The high values of iron and nonferrous metals extraction into the leaching solution are achieved during hydrochloric acid …
Granulation and Heat Recovery from Metallurgical Slags
The major drawbacks with this method of slag handling are low value of the product, significant energy demands for subsequent crushing, and slow cooling. Further, investment in equipment and heavy machinery is required. The slow cooling associated with this method demands a large slag-cooling area.
Current Development of Slag Valorisation in China
The up line is for crushing the solidified slag and the lower line is for discharging the granulated slag particles. ... Y.M., Du, J.W., Guo, R.Z., Li, Z.C.: Design and application of granulation system of converter slag by HK method in Liugang. Liugang Sci. Technol. 35(1), 39–42 (2007). in Chinese. Google Scholar Guan, J.H.: The development ...
Slag Atomising Technology (SAT): Strategic management of
Processing of EAF using traditional methods involves crushing and grinding. However, the new technology of atomising molten slag is an innovative process that produces high-specification products with multiple uses. ... Compared to conventional methods of EAF slag processing, SAT is more versatile, most economical and has few environmental ...
Analysis on factors affecting moisture stability of steel slag …
Among them, Bao-steel slag adopts the roller method treatment process. The high-temperature slag is dumped into the roller device, and the steel ball in the device crushes the steel slag as the roller revolves and sprays water to cool it. ... followed by further crushing. The slag of Wisco steel slag is treated by the hot stuffy method ...
Summary of physical methods for slag heat recovery.
Similarly, waste heat from slag can be recovered by various physical and chemical methods like air blast method, centrifugal granulated method and mechanical crushing method (Quader et al., 2015). ...
Laboratory Tests on Compaction and Crushing …
The compaction and the crushing behavior of slag–clay mixture can be well explained by the ... and several recycling methods have proved useful in engineering practice [R. S. Cummings, and P. G.
The positive contributions of steel slag in reducing carbon …
However, due to the uneven particle size of the steel slag generated by mechanical crushing methods, posing challenges for industrial utilization, and the high temperature of the cooled steel slag (500–900 °C), which significantly diminishes the efficiency of steel slag waste heat recovery, research and application of mechanical crushing ...
Slag Recycling and Metal Recovery
As a result of growing environmental awareness, steel slag is now highly regarded as a recycled material that can reduce environmental impact due to its resource-conservation and energy-saving properties. MEKA is designing and …
Crushing Methods
Mechanical Properties of Slag-Based Geopolymer Grouting …
Homogenized micro-crack crushing can fully retain the bearing capacity of concrete pavement, but local weak road base needs to be reinforced before being directly overlaid with hot-mixed asphalt. Therefore, indoor tests were conducted to study the mechanical properties of slag-based geopolymer as a grouting material for weak road base, and the morphology and …
A Sustainable Method for Chromium Recovery from …
Chromium was successfully separated from synthesized stainless steel slag (CaO–SiO2–MgO–Cr2O3) through the addition of waste silicon powder and CaF2. Waste silicon powder shows a promising and environmentally friendly reductant, compared to carbon, achieving the transformation of chromium from stainless steel slag to dispersed fine alloy particles, while …
Granulation performance by hybrid centrifugal-air blast …
Therefore, several dry granulation techniques were proposed with two necessary steps of slag crushing and waste energy recovery. The general physical methods [4] include mechanical crushing, air blast, and centrifugal granulation based on the different crushing mechanisms. ... the dry granulation is the most promising method for molten slag ...
Recycling of submerged arc welding slag for sustainability
1. Introduction. SAW is a unique welding method since it involves the arc which is completely submerged under the layer of granular flux. During welding, this flux that contains lime, SiO 2, MnO, CaF 2 and other compounds reacts with the contaminants in the molten weld metal and forms slag. Thus, slag is considered as waste material.
Processing and Reusing Technologies for Steelmaking Slag
③ crushing and classification of the slag for grain size adjustment to manufacture the slag product, and ④ aging treatment of the slag product for improving its quality and volumetric …
Development of a Rotary Cylinder Atomizing Method of Slag …
Researchers pro- moted various techniques for slag granulation, such as mechanical crushing method [7,8], air blast method [3,9] and centrifugal gran- ulated method [10, 11]. Among them the ...
Our Company History
By 1963, Alfred was Crushing S.A.W. Flux / Slag full time. A native of Canada, Alfred opened Allied Flux, Inc. in Edmonton, Alberta, Canada. Eventually, his sons took over the S.A.W. Flux / Slag crushing business, and brought their father's discovery to the United States. Greencastle, PA is now the home of Harbert's Products, Inc.
Selective crushing, enrichment by friction properties and
One of the most common ways of recycling BFS in the liquid state is granulation (rapid cooling of hot BFS in a liquid state in a jet of water). As a result of this process, granular …
Steel Slag Processing Plant Equipment Selection
The cone crusher is widely used for the intermediate crushing processing of steel slag and adopts the laminated crushing method. The rolling mortar wall moves towards the crushing wall to squeeze materials. Through hydraulic motor to adjust the discharge port, which is convenient and equipped with remote touchscreen operation to achieve safety ...
Recent progress of efficient utilization of titanium-bearing …
Titanium-bearing blast furnace slag (BFS) has valuable compositions and potential environmental hazardousness. Thus, developing efficient and green approaches to utilize BFS is highly desired for resource economization and environmental protection. In the past decades, many attempts have been adopted to reuse BFS efficiently, and significant advances in …
Review on the innovative uses of steel slag for waste minimization
Steel slag-based cement clinker production is done by crushing and screening steel slag and is fed along with the lime at the feed end of the kiln . ... Tuovinen F (1989) Method for utilizing slag from ferroalloy production. US 4818290 A. Sarkar R, Singh N, Das Kumar S (2010) Utilization of steel melting electric arc furnace slag for ...
Crushing characteristics and particle size distribution of …
At present, steelmaking slag is widely used in civil engineering projects as a road, landfill, and covering aggregate, among other uses, at home and abroad due to its excellent physical and mechanical properties [4, 5].Recycling steelmaking slag has been evaluated in terms of its particle size (particle size distribution), quality standards (absorption rate, durability, …
Three-Stage Method Energy–Mass Coupling High-Efficiency …
High-temperature molten steel slag is a large amount of industrial solid waste containing available heat energy and resources. This paper introduces an efficient and comprehensive utilization process of high-temperature molten steel slag. The waste heat energy in the high-temperature molten steel slag can be fully recovered through the three-stage heat …
Slag crushing
How to crush slag efficiently? Slag often contains valuable metals that can still be recovered and utilized. When crushed and sized properly, slag can be sold and used as valuable material in many different ways, for example, as aggregates.
Construction Brick Slag Crushing And Recycling Plant
The brick slag crushing has good development prospects. there are two types of equipment for brick slag crushing: fixed and mobile crushers. Skip to content. Eastman Rock Crusher. Eastman Rock Crusher +86- ... the traditional method of paving with crushed stones and pebbles is costly. Due to the rapid development of the mining ...
A review of waste heat recovery technologies towards …
Molten slag exhausted with critically high temperature of about 1450–1550 °C is a potential resource of energy and raw materials. Water quenching is a traditional heat recovery …