saved. In summary dry granulation of blast furnace slag allows an environmental friendly and sustainable subsequent processing for one of the last big heat recovery potentials at a modern blast furnace. [1] References [1] McDonald, I., Long, E., Werner, A. & Most, D. (2010) Dry slag granulation - The environmental friendly way to making cement.
Blast Furnace. Areas we handle in Blast Furnace: Design and Supply of Slag Granulation System. Stock House Facilities. Charging Equipment, BLT. Tuyere Nozzles. Cooling System. Gas Cleaning System. Energy Recovery.
The number of granulation plants for blast furnace slag has grown strongly. Since around 2000, the most important Chinese steel producers have been investing in granulation and grinding plants for blast furnace slag. It is currently estimated that 95 % of the blast furnace slag is granulated and used entirely in the cement and concrete industry.
Blast furnace slag obtained from water quenching is generally used for cement production. However, harmful waste, such as SO2, H2S and heavy metals, is discharged into the surrounding environment ...
Our technologies cover the entire blast furnace process route from raw materials to clean gas and hot metal / slag processing. Our capabilities include feasibility and process studies, a wide range of technical products and solutions, environmental, CO 2 and energy saving answers, automation systems, and the ability to execute the full range of ...
Slag Granulation Systems for Blast Furnaces Page 9 of 12 B-2-033. Figure 8 Hot wate r granulation system at a 7500 thm/d fu rnace. The stack needs to be sufficiently high to disperse the steam ...
As the main by-product of the ironmaking process,blast furnace slag(BF slag)is a high-grade heat source.The traditional water quenching method of BF slag treatment has the problems of large water consumption and environmental pollution.At the same time the BF slag mechanical centrifugal granulation and heat recovery process has the advantages ...
Blast furnace slag granulation. Oxygen Steelmaking. C-SUBLANCE. Sublance based process control systems. C-Desulph . Hot metal desulphurization by lance injection of reagents. SPM Steel Plant Model . The comprehensive solution for steel plant logistics. business units. Danieli & C. S.p.A.
The main objective of the slag granulation plant is to process liquid blast furnace slag into valuable raw materials for the cement and construction industries. The value of the slag depends on its characteristics such as mineralogical, chemical, physical and mechanical properties, glass content, structure and moisture content.
granulation system or to dry slag pit (when granulation is not being carried out) through slag runners. iii) Stoves and Hot Blast Supply System: Hot Blast Stoves supply hot blast after heating cold air provided by turbo blowers/Fans to Blast furnace through hot blast …
The technology of slag processing through granulation starts by effusion of slag from the Blast Furnace. The melted (liquid) slag at the temperature of 1300°C – 1550°C is led into the granulation chamber through a channel system (with an internal refractory lining).
Dry Slag Granulation. Water granulation is the most commonly used method to handle blast furnace slag and requires a granulation and a dewatering step to process the slag. In water granulation, the energy in the slag is lost from water evaporation and cooling and is difficult or impossible to recover.
Abstract. Blast furnace smelting is the dominant ironmaking method around the world. Blast furnace operations cover not only blast furnace smelting but also a set of auxiliary processes and equipments, including molten slag granulation, hot stoves and off-gas treatment systems.
Each year, approx. 400 million tons of blast furnace slag is produced worldwide with a tapping temperature of around 1,500°C. Currently, the slag is granulated in wet granulation plants using large volumes of water and to date it has not been possible to utilize the remnant heat energy of the molten slag, with approx. 1.7 GJ of energy per ton.
Dry Granulation of Blast Furnace Slag. Liquid slag produced in a blast furnace (BF)is at a temperature of around 1500?C and has a sensible heat of around 400Mcal/ton. BF slag is rich in CaO, SiO2, Al2O3, and MgO which are similar to the components of Portland cement. When this liquid BF slag is cooled fast enough then the solidified slag has a ...
BOF Slag Granulation Plant. Steel slag from BOF (Basic Oxygen Furnace) steelmaking process was cooled by nature in the past. This material will swell and crack if directly used for road paving. Kingtech uses water quench process to release heat stress. The product size is ranged 2-3mm, steel granules and slag are separated. Granulated steel slag.
Blast Furnace Slag Granulation at the Cast House. A blast furnace (BF) is a closed system into which iron-bearing materials (iron ore lump, sinter and/or pellets), fluxes (slag formers) and reducing agents (i.e. coke) are continuously fed from the top of the furnace shaft through a charging system. The products of reduction process which takes ...
of granulation tanks and/or INBA dewatering drums adapted to your furnace design and requirements. Blowing Box Jet Slag Granulation Area: Granulation Tank & Blowing Box The slag granulation area links the hot slag runner of the blast furnace and the INBA dewatering system. This link is directly accomplished through the use of a granulation tank.
Wastes Recycling Equipment. Grinding Plant for Blast Furnace Slag. Granulation System for BOF Slag. Dust Reutilization for Electric Arc Furnace (EAF) Steelmaking. Dry Bottom Ash System …
chinese technology for blast furnace slag granulation process. Blast furnace slag, as bulk solid waste produced in the ironmaking process, will inevitably pollute the environment and occupy a large amount of land resources if it is not treated and utilized [1,2].The traditional water quenching method of blast furnace slag (BFS) will consume a ...
Yu, et al. [188] reviewed the granulation process for blast furnace slag. They reported that for every pig iron production accompanied by 0.3-0.6 tons of blast furnace slag produced with the ...
Blast furnace slag, as bulk solid waste produced in the ironmaking process, will inevitably pollute the environment and occupy a large amount of land resources if it is not treated and utilized [1,2].The traditional water quenching method of blast furnace slag (BFS) will consume a lot of new water in the process, pollute the atmosphere by gases such as H 2 S and SO 2, waste a lot of sensible ...
Slag Granulation Systems Efficient blast furnace slag granulation contributes to low-cost hot metal and turns a residue into a resource. 10/115. A modern blast furnace can produce more than a million tons per annum of slag. Slag granulation using water sprays is now an established technology that not only simplifies blast furnace casting floor ...
The granulated slag samples were collected from the water granulation system at No. 6 blast furnace at East Japan Works (Chiba District), JFE Steel Corporation. Figure 1 shows the outline of this water granulation system. 12 ) The slag was recovered with sampling equipment set up between the conveyors at the outlet side of the dehydrator.
Introduce characters and applications of granulation techniques of the molten blast furnace slag in contemporary China, describe characters and design ideas of two types of granulation boxes, represent three types of circulating granulation water systems, put forward matching proposal between the molten slag granulation system and the circulating granulation water system, analyze contemporary ...
The invention discloses a blast furnace slag granulation and waste heat recovery device which mainly comprises a slag sliding port (1), a liquid slag bucket (2), a quick cooling cavity (3), a star-shaped slag dumping wheel (9) and an air cooling cavity (10), wherein the quick cooling cavity (3) is further divided into an upper granulation wheel set part and a lower water quenching part; and ...
The granulated slag samples were collected from the water granulation system at No. 6 blast furnace at East Japan Works Chiba District, JFE Steel Corporation. Figure 1 shows the outline of this water granulation system. 12 The slag was recovered with sampling equipment set up between the conveyors at the outlet side of the dehydrator.
A system analysis of advantages and features of the semi-industrial pilot HVG-plant showed that its operation for granulation of slag melts of ferrous metallurgy in enterprises equipped with modern arc electro-thermic ore-smelting furnaces is feasible according to the schematic diagram presented in Fig. 11, where 1 is arc ore-thermal furnace, 2 ...
