Heat Recovery Metallurgical Process Slag
heat recovery metallurgical process slag
Economics of Slag Heat Recovery from Ferronickel Slags. Hatch supplies engineering, project and construction management services, process and business consulting and operational services to the mining, metallurgical,Economics of Slag Heat Recovery from Ferronickel Slags. Contact Supplier; Feasibility of recovering metals from associated slags
Experimental investigation on molten slag granulation for
25/06/2016· Metallurgical slags, discharged at high temperature range, are produced as by-products in metallurgical processes. In order to reuse waste energy in molten metallurgical slags, the dry granulation and waste heat recovery technology is a popular technology, compared to
(PDF) Experimental study on waste heat recovery for
PDF In order to solve variuous problems in recovering waste heat from high temperature metallurgical slag particles by cold air, the technique that the waste heat of metallurgical slag particles
Heat recovery from slag improves energy efficiency of furnaces
to other plants in the vicinity. Recovery of waste heat from furnace off-gas and other sources in furnaces has been well documented in other articles and this article will focus on the recovery of heat from slag. Depending upon the type of slag handling . process, waste heat can be recovered at different temperatures at different stages,
Pyrometallurgy Wikipedia
Pyrometallurgy is a branch of extractive metallurgy.It consists of the thermal treatment of minerals and metallurgical ores and concentrates to bring about physical and chemical transformations in the materials to enable recovery of valuable metals. Pyrometallurgical treatment may produce products able to be sold such as pure metals, or intermediate compounds or alloys, suitable as feed for
Dry Slag Granulation with Waste Heat Recovery
9/08/2016· Dry Slag Granulation with Waste Heat Recovery 1. MINERALS DOWN UNDER NATIONAL RESEARCH FLAGSHIP Current Status & Future Direction of CSIRO’s Dry Slag Granulation Process with waste heat recovery ICST 2012, Dresden, Germany: 1-3 October, 2012 Sharif Jahanshahi and Dongsheng Xie 2.
Heat recovery process modelling of semi-molten blast
As a valuable byproduct of the iron-making process, blast furnace slag with temperature up to 1450–1650 ° C contains a tremendous amount of sensible heat. Dry granulation and waste heat recovery via a moving bed is an attractive alternative to the conventional water quenching method due to energy-savings and the reduction in water consumption.
CFD modelling of dry slag granulation using a novel
is also able to recover the sensible slag heat as hot air. The integrated DSG and heat recovery process has been successfully demonstrated at a pilot plant scale with throughputs of up to 5 t/h (Figure 1). Figure 1: Photos of (a) the semi-industrial scale (3 m diameter) integrated DSG and heat recovery pilot plant at
(PDF) Heat Recovery from Slag through Dry Granulation
Subsequently, the remainder of the heat is recovered in a packed bed, through embedded boiler tubes or direct contact of air–slag. Within this context, the proposed process by CSIRO [23, 48, 50
Recovery of heat from molten slag from metallurgical
5/09/1978· It is an object of this invention to provide a method and apparatus for efficiently recovering heat from slag from a metallurgical process by effectively collecting the sensible heat of the slag as heat contained within steam or some other high-temperature fluid or gas through radiant heat absorbing tubes for heat absorption and recovery.
Recovery of heat from molten slag from metallurgical
5/09/1978· It is an object of this invention to provide a method and apparatus for efficiently recovering heat from slag from a metallurgical process by effectively collecting the sensible heat of the slag as heat contained within steam or some other high-temperature fluid or gas through radiant heat absorbing tubes for heat absorption and recovery.
Design and Operation of Dry Slag Granulation Pilot Plant
Experimental results on the dry slag granulator pilot plant have demonstrated that the process can effectively produce glassy slag granules from molten iron blast furnace slag, and recover significant heat, and that the CFD model can be used to predict process performance. Work continues to scale-up the process and extend the operation to other
Current Development of Slag Valorisation in China
The development process and trend of the waste heat recovery technique of the molten blast furnace slag. In: Proceedings of National Conference on Energy Saving, Emission Reduction and Low Carbon Techniques of Metallurgy. Tangshan, China (2011). in Chinese
Liquid-Phase Recovery of the Metallurgical Slag Using
The efficiency of the recovery phase depends on both temperature conditions and the composition slag, and introduced additions. The exploration of the possibility and feasibility of the liquid-phase restoration for steelmaking waste slag of the Zlatoust Metallurgical Plant applying the induction heat installation is the aim of this study
Current Status of Heat Recovery from Granulated Slag 3rd
Summary This chapter contains sections titled: Introduction Metallurgical Slags and their Application Granulation Techniques Recovery of Thermal Energy from Slag Recovery as
Slag Atomising Technology: Unlocking Real Value
2.3 Heat Recovery Obstacles The molten slag discharged from the metallurgical furnaces is a tremendous energy stream leaving the reactor and in some cases can reach up to 80% of the total energy input to the process (6; 7). This energy represents a signifi-cant cost which is currently not recovered. In air cooling, this energy is dissipated to
Pyrometallurgy Towards Clean Metallurgical Processing 2012
step, a heat transfer model for calculating the ten developed. The details of this model and the gov MATHEMATI Direct Heat Recovery Process A simple process in which slag is granulatec droplets are released into a vertical heat recovery construction or land filling or as coarse aggregate for dly, the slag can be used as a substitute for Portland
Crystallization of Synthetic Blast Furnace Slags
Crystallization of Blast Furnace Slags Pertaining to Heat Recovery Shaghayegh Esfahani Doctorate Materials Science and Engineering University of Toronto 2016 Abstract Heat recovery from blast furnace slags is often contradicted by another requirement, to generate amorphous slag for its use in cement production. As both the rate and extent of heat recovery and slag structure are determined by
Heat recovery in dry granulation of molten blast furnace slag
@article{osti_5610662, title = {Heat recovery in dry granulation of molten blast furnace slag}, author = {Tetsuro, N. and Hiroshi, N. and Koichi, F. and Tsukio, I.}, abstractNote = {In a research and development project undertaken jointly between Ishikawajima-Harima Heavy Industries Co. and Sumitomo Metal Industries, Ltd., a process has been developed for granulating molten slag discharged
Schedule Slag Valorisation Symposium
1/04/2019· Heat recovery for an efficient microwave process. 10.40 Irene Ruiz-Oria Atlantic Copper S.L.U. Dry copper slag atomisation: on site laboratory-pilot scale trials at copper smelter facility. 11.00 Jan Peter Schupsky Forschungszentrum Jülich GmbH
Recent progress of hot stage processing for steelmaking
For BOF slag treatment, above mentioned pyrolytic self-slaking, HK, and BSSF processes are being accepted. No process considered the heat recovery from molten slag during granulation processes. Large scale application of stabilised steel slag powder in construction is a good way for steel slag
Recycling of heat from the metallurgical industry wastes
ferrous metallurgy. Heat loss from the slag in the heat balance amounts to 30-40%, while the temperature of the liquid slag is 1300-1350°C. To recover heat from waste gases, which can be used to preheat the feed, air blast, fuel, to generate electricity and steam, it is required to equip the existing metallurgical furnace with appropriate
FUNDAMENTALS OF ZINC RECOVERY FROM METALLURGICAL WASTES
FUNDAMENTALS OF ZINC RECOVERY FROM METALLURGICAL WASTES IN THE ENVIROPLAS PROCESS Masud A. Abdel-latif Mintek, Randburg, Republic of South Africa [email protected] KEY WORDS: Enviroplas, D.C. Arc Furnace, ISP Condenser, EAF Dust, LBF Slag, Dross, Premelting, Smelting, Zinc Fuming. ABSTRACT
chinese technology for blast furnace slag granulation process
Blast furnace slag present invention dry granulation and heat recovery furnace slag and waste heat recovery process translated from Chinese . particles, and then using the remaining heat recovery technology methods.
Process Challenges in the Metallurgical Sector?
Better trouble-shooting capabilities for metallurgical process problems or deficiencies. More accurate determination of process efficiency and recovery rates. More informed flowsheet design and modification. Improved information flow to management. Increase in
Research of Processes and Development of Separators for
This article relates to the analysis of formation and the metal content of slag, generalised data from enterprises on yield and treatment of slags. Test results of the metal content determination in slag dumps, slag granulometric composition, its physical and chemical properties, as well as results of experimental investigation of metal recovery process from slags are presented.
Recovery of volatile metal values from metallurgical slags
1/04/1987· 1. A process for the recovery of volatile metal values from metallurgical slags, characterized by comprising flowing a stream of molten metallurgical slag through a furnace, optionally feeding a reducing agent into said slag stream, impinging on the surface of the slag stream the heat from at least one plasma torch, removing from above the slag a gas containing metal vapours, and
Heat recovery from melted blast furnace slag using
Potential of melted slag as heat source Melted slag at 1500℃has sensible and latent heat of about 400 500 cal/g. If half of the heat of melted slag is to be recovered in Japan, the total heat recovery will be equivalent to about 1 Mt of coal. =0.5％of annual coal import of
Development of Heat Recovery System from Steelmaking Slag
slag is being formed rises by approximately 30°C. Since this is within the design range of 70°C or less, the designed cooling capacity can be obtained. 3. Development of Slag Heat Recovery Process 3.1 Design of Slag Heat Recovery Pilot Plant The slag heat recovery pilot plant which was built in this development is a counterflow packed bed
Treatments and Recycling of Metallurgical Slags IntechOpen
Steelmaking plants continuously strive to reduce the environmental load in the steelmaking process, resulting in the recycling of energy, water, and other byproducts. In this chapter, techniques for the treatment and recycling of metallurgical slags are described. Metallurgical slags are considered secondary raw materials and are used or added during the process to improve steelmaking practice.
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