The terms blast furnace slag (BFS) and granulated blast furnace slag, as well as LD slag and electric furnace slag are used for finer distinctions. With high-quality iron ore grades with an iron content of 64 to 67 %, a blast furnace typically produces about 0.25 to 0.30 t of slag per t of pig iron.
The results showed the melting temperature of blast furnace slag with 4–7% MgO was lower than 1350 °C under the condition of low Al 2 O 3 content. The viscosity of the slag met the requirement of blast furnace smelting when the temperature of slag was 1500 °C and the MgO content was higher than 3%. The best basicity of the slag was …
1. Overview of blast furnace slag treatment process in China. Currently, the water quenching granulation process and the dry granulation process are widely used …
World production data for slag were unavailable, but iron slag from blast furnaces may be estimated to be 25% to 30% of crude (pig) iron production and steel furnace slag may be estimated to be 10% to 15% of raw steel production. In 2021, world iron slag production was estimated to be between 340 million and 410 million tons, and steel slag ...
In China, more than 80% of blast furnace slag is made into granulated slag every year as cement mixing material. About 70% of the cement produced in China is mixed with different amounts of granulated slag. According to the Chinese national standard gb175-77, 15% granulated slag is added to produce ordinary portland cement; Gb1344 …
Reduce, reuse, and recycle are important techniques for waste management. These become significant for improving environmental and economic condition of industries. Integrated steel industries are generating huge amounts of steel slag as waste through the blast furnace and Linz–Donawitz (LD) process. Presently, these …
1. Introduction. 2. Development of Chinese Super-Large Blast Furnace. 3. Low Fuel Rate Operation Technologies of Chinese Super-Large Blast Furnaces. 4. Raw Materials …
1. Overview of blast furnace slag treatment process in China. Currently, the water quenching granulation process and the dry granulation process are widely used in …
In a blast furnace, the molten slag is formed under reducing conditions and Ti-bearing materials are added to protect the hearth of blast furnace 11. As shown in titania slags 12, these reducing ...
The slag grinding plant in Nanchang is in operation since November 2005. The roller mill is a type RMS-51/26 with an SEPOL RMS-435 separator. For a feed material consisting of 95% slag, 4% gypsum and 1% limestone a capacity of 80t/h finish product with a fineness of 4400cm 2 /g according to Blaine was warranted.
4) China Iron & Steel Association, Beijing, 100711 P.R. China. (Received on October 25, 2016; accepted on March 1, 2017) Operational smoothly of ironmaking process is determined to a great extent by its slag performance especially for the large blast furnace. Operation characteristic of super-large blast furnace slag in China
The radionuclide composition of the fractions of dump and granular blast-furnace slags from Ukrainian enterprises, their compliance with the radiation safety standards of Ukraine and international radiological indicators were determined. The blast-furnace slag contains natural radionuclides: 226Ra, 232Th and 40K. All investigated …
The iron and steel industry in China was developed with the urbanization process. A large amount of energy and sources were wasted in this process, which blocked not only the implementation of the energy conservation but also emission reduction policy [1, 2].Blast furnace slag (BFS) was the most major by-product generated by quenching …
The dump, covering an area of 25 hectares, had almost 6 million tonnes of accumulated waste. Almost 350,000 tonnes of scrap were recovered as a result of processing of the accumulated 5 Mt of slag dump. The recovered metal was used to replace other iron-containing raw materials in blast furnace operations, thus reducing the consumption of …
Mussel shell ash (MSA) and ground granulated blast furnace slag (GGBS) has similar chemical and physical properties as ordinary Portland cement (OPC) which makes it applicable to replace cement in concrete. ... Moreover, the reuse of GGBS can reduce the effects of improper waste dumping as it caused serious impacts to health …
1 Citation. Explore all metrics. Abstract. The metallurgical processes in production of iron and steel from ores produce slags (blast furnace slag and basic …
Reporting on the recovery of steel slag in China only began in the 1970s (Shan, 2000). The utilization of steel slag in China has undergone three stages, which are illustrated in Fig. 3. ... (DA) has emerged as the most significant solid waste, second only to granulated blast furnace slag and steel slag (SS), generated by steelmaking plants.
In recent years, by Chinese super-large blast furnace operators' continuous efforts, the blast furnace produc- tion indexes were improved constantly, and fuel rate was declined …
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 …
Abstract Slags are byproducts of the metallurgical industry. It is of importance to recycle materials and recover heat from metallurgical slags to reduce the energy consumption and environmental impact of steel industry. China is the largest iron- and steelmaking slag producer in the world, and intensive efforts have been made …
Bangladesh Steel Re-Rolling Mills Limited (BSRM): An innovative project for utilising induction furnace slag to replace unsustainable fired clay bricks and stone chips. Bangladesh produces 7.5 million tonnes of steel per annum, mainly via induction furnaces. The processing and utilisation of blast furnace slag were not practised due to ...
Since the 21th century, blast furnace process in China has been enhancing continuously, but granulation process of the molten BF slag doesn't be improved thoroughly. Engineers haven't discovered a ...
In the CIS countries, the yield of slag per 1 ton of liquid metal can be up to 500 and 200 kg for blast furnace and converter processing, respectively. The formation of slag is an inevitable consequence of all pyrometallurgical processes due to the melting of waste rock of the processed raw materials, including oxides of Ca, Mg, Al, Si and ...
The unscientific dumping of steel slag may lead to several environmental implications. ... slag, i.e., CaO-SiO 2 slag is now free from phosphorus and can be subjected to an application similar to that for typical blast furnace slag. Fig. 13. Carbothermic reduction ... Steel slag in China: Treatment, recycling, and management. …
In this paper, we reviewed steel slag treatment, recycling, and management in China. Although China's annual slag production reached more than 100 million tons, its utilization rate is only 29.5% ...
After the accumulation in recent years, the current number of waste blast furnace slag in China is huge. By 2020, the total amount of industrial solid waste in China will reach 3.787 billion tons, of which metallurgical slag is 689 million tons, accounting for 18.19%, which is the third largest ...
In last 5 years, an enhancement of over 18% for blast furnace slag and basic oxygen furnace slag has been achieved (GOI 2013–2014). By continuing thrust on solid waste consumption at the integrated iron and steel plants, total solid waste utilization has increased from 77% in the 2007–2008 to 86%; an increase of 9% over the last 5 …
Slag Granulation. Slag handling is an important aspect of modern blast furnace operation. Today, blast furnace slag is a value added product for the cement industry, using granulated slag sand as CO2-friendly substitute of clinker in cement production. Paul Wurth has developed the INBA® slag granulation process, incorporating our proprietary ...
The vast amount of industrial by-products with ever-increasing annual production in China [59] has compelled Chinese researchers to increase the volume fraction of these materials in construction additives as well. ... into blast furnace slag (40%) to form a parent glass ceramic with increased silica and CaF2 content which in turn …
XRD, TEM, ED, and NMR analyzed four types of blast furnace slags (BFS) with different structures in this paper. The composition requirement for phase separation in BFS glass phase was then put forward, that is the composition of slag locates in the coexisting phase region of melilite and any silicate mineral with Q0 units. The special …
Instead of simply dumping slag at landfill sites, we treat it and turn it into premium products. ... Blast furnace slag. LD converter slag. Electric arc furnace slag. Stainless steel slag. Other types of metallurgical slag. 5. …
Current State of Blast-Furnace Smelting in China, Japan, South Korea, Western Europe, and North and South America. ... The amount of slag formed in the blast furnaces rose from 263 kg/ton in 2007 to 303 kg/ton in 2014 (this result represents the average for seven factories). At the same time, total fuel consumption increased from …
Operation characteristic of super-large blast furnace slag in China was summarized and the appropriate adjustment measures for better performance of BF were analyzed based …
The development of large blast furnaces in China is crucial for energy saving, emission reduction and transformation and promotion processes of iron and steel industry. ... Natural Science Foundation of China (61271303, 61571040). And also express their gratitude to the operation indexes of blast furnace from China Iron and Steel …
About 70 million tons of steel slag is discharged in China every year; and as of 2016, nearly 300 million tons of steel slag have not been used effectively. This …
Public data dump OpenURL XML ... Hubei University of Technology, Wuhan 430068, China Bo Jiang School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China ... The purpose of this work is to investigate the properties of activated blast-furnace slag (BFS)–steel slag (SS) with sodium carbonate ...
