Tangshan targets to cut crude steel output by 8.26 million …
Tangshan, China's major steel production base in North China's Hebei province has targeted to reduce its crude steel output by 8.26 million mt this year on the …
Technological research of process for producing titanium rich slag …
For smelting of titanium rich slag, the low-ash reducing agents were used, i.e., some oxides (SiO 2, Al 2 O 3, CaО and MgO) convert into the slag and impoverish target product - slag.The low electrical conductivity and ash content of the reducing agent ensures a high electrical resistance of the charge, a deep fit of electrodes, a stable …
Life cycle assessment of melting reduction treatment for iron …
A computational study of the metal-slag system using FACTSAGE 7.3 suggests that production of pig iron nuggets of good quality (93.75 wt.% Fe, 4.3 wt.% C, 0.116 wt.% S, 0.66 wt.% Mn) can be ...
A comprehensive review on the recovery of copper values from copper slag
However, there is a dearth of literature on the application of gravity concentration techniques for the treatment of Cu-slag. Lan et al. [54] hypothesized an approach for the separation of metallic copper values from the iron-rich slag utilizing enhanced gravitational forces. The effect of additives under the influence of enhanced …
Production Bases
As demand exceeded supply in 2005, we saw the need for expansion and initiated a second JV between Tangshan Iron & Steel Group (TISCO) and EnGro Corporation Ltd., adding another 600,000 metric tons to our annual production, bringing it to a total installed capacity of 1.2 million tons of GGBS each year. ... VCEM Materials Co. Ltd has a 500,000 ...
CRU explains: How Tangshan influences the global steel …
CRU estimates that Tangshan produced just over 140 Mt of hot metal in 2020, slightly higher than official data which recorded 133 Mt of output. This means the city consumed ~210 Mt of iron ore and ~70 Mt of coke (produced from ~95 Mt of coking coal) during 2020. Our analysis shows that the city is highly dependent on Australian iron ore.
Steel slag in China: Treatment, recycling, and management
Many restrictions exist, however, on the utilization of steel slag. When steel slag is used internally, in steel plants, the most obvious problem is that of the enrichment of P and S (Drissen et al., 2009).The Bhilai Steel Plant in India was shut down because of its high S and P content (Das et al., 2007).The amounts of free lime and free MgO are …
Comprehensive Utilization Technology of Steel Slag
The utilization of steel slag in cement includes mainly three modes [ 55 ]: matching the clinker of cement raw material, producing low-clinker steel slag cement, and being an active addition [ 55 ]. The process of making steel slag cement is a simple manufacturing technique with less investment and low cost.
Iron ore price posts worst day in 9 months on slowing steel …
The most-traded September iron ore on China's Dalian Commodity Exchange ended daytime trade 3.5% lower at 795.5 yuan ($109.94) per metric ton, its worst day since October. On the Singapore ...
Synthesis and Characterization of Titanium Slag from …
Titania rich slag contains 70–80% TiO 2 as the major component with some other minor impurities, like oxide phases of Si, Al, Cr, Mg, Mn, Ca, etc. Usually titanium is present in tetravalent forms with globular metallic iron in the slag. Titania rich slag undergoes leaching for the removal of iron and transforming the slag into synthetic ...
Tangshan steel curbs could have ripple effect on …
China's top steelmaking hub Tangshan orders …
WebSteel prices continue to fall. China's biggest steelmaking hub Tangshan has ordered steel output curbs from Oct. 28 to tackle worsening air quality in the city, forcing …
Tangshan Fengnan Iron & Steel orders slag granulation kit …
China: Hebei Zongheng Group Tangshan Fengnan Iron & Steel has ordered Inba slag granulation and dewatering equipment as part of a new 12Mt/yr iron plant. Capital …
(PDF) Iron and steel-making slags as an environmentally …
The iron and steel industry has a long tradition of bulk reuse of slags for a range of construction applications. Growing interest in recent years has seen slag resource recovery options extend to ...
CN105112689A
The invention discloses a method for extracting titanium from vanadium titano-magnetite, which comprises the following steps of adding a sodium or potassium salt additive in the reduction smelting of an iron ore concentrate electric furnace to obtain molten iron and titanium-containing slag, wherein: vanadium and iron are reduced into molten iron, and …
Development of a Smelting Reduction Process for Low …
Ming XQ, Wu XD, Huang GH (2016) Factors influencing the production of manganese rich slag by high iron and high phosphorus refractory manganese ore, China's Manganese Industry. 34(3):131–133. Zhang T (1992) The two-stage production of high-carbon ferromanganese in a blast furnace: A method for the treatment of a lean …
Synthesis and Characterization of Titanium Slag from …
Titania rich slag contains 70-80% TiO 2 as the major component with some other minor impurities, like oxide phases of Si, Al, Cr, Mg, Mn, Ca, etc. Usually titanium is present in tetravalent forms with globular metallic iron in the slag. Titania rich slag undergoes leaching for the removal of iron and transforming the slag into synthetic rutile ...
A comprehensive assessment on material, exergy and
A substantial quantity of waste heat resources generated in iron and steel manufacturing process (ISMP) can fulfill certain demand for urban heating. However, the waste heat utilization level of different iron and steel enterprises varies a lot and few studies have combined the upstream enterprise's production with downstream waste heat ...
Life cycle assessment of melting reduction treatment for iron …
DOI: 10.1016/j.rcradv.2022.200108 Corpus ID: 251164211; Life cycle assessment of melting reduction treatment for iron and steel waste slag: A case study in Tangshan, China @article{Li2022LifeCA, title={Life cycle assessment of melting reduction treatment for iron and steel waste slag: A case study in Tangshan, China}, …
Life Cycle Assessment of Internal Recycling Options of Steel Slag …
The internal recycling process of BOF slag which is one of the huge solid wastes from iron and steel industry was emphasized. Based on the four scenarios of different internal recycling strategies for BOF slag, life cycle assessment (LCA) as a valuable tool for industrial solid waste management was applied to analyze the …
CRU explains: How Tangshan influences the global …
CRU estimates that Tangshan produced just over 140 Mt of hot metal in 2020, slightly higher than official data which recorded 133 Mt of output. This means the …
Production, characterisation, utilisation, and beneficial soil
Section snippets Slag production in the metallurgical industry. The iron-making and steel-making industries produce four types of slags, named after the processes from which they are produced (Fig. 2): Blast Furnace Slag (BFS), Basic-Oxygen Furnace Slag (BOFS), Electric-Arc Furnace Slag (EAFS), and Ladle Furnace Slag (LFS), and the …
The hydration of ternary blended cements with Fe-rich slag …
Introduction. Decreasing the clinker factor by using supplementary cementitious materials (SCMs) is one of the main options for reducing the CO 2 emissions related to cement and concrete production [1], [2]. Many of these SCMs are by-products from other industries, with the most commonly used ones being ground granulated blast furnace …
Minerals | Free Full-Text | Semi-Smelting Reduction and Magnetic …
This work presents a semi-smelting reduction and magnetic separation process for the recovery of iron and alumina slag from iron rich bauxite ore. The effect of the process parameters on the recovery rate of iron, maximum particle size of the iron nugget, and the Al2O3 content of the alumina slag was investigated and optimized. The …
Steel Company Employees Indicted for Falsifying Emissions Data
Thirteen people working for an iron and steel company and a third-party monitoring company in North China's Hebei province are on trial for allegedly falsifying environmental monitoring data, as the authorities have ramped up efforts to punish polluters. Lunan District People's Court in the city of Tangshan on Wednesday heard the case of ...
Tangshan Steel wastewater project: A reference for wastewater recycling
The wastewater recycling project of Tangshan Iron & Steel Co., Ltd. (TIS) is an example for wastewater recycling. As the company moved toward full production in October 2009, TIS has taken the lead in China in using the municipal wastewater as the only water source and realizing zero discharge of wastewater throughout the whole plant. Based on our …
Critical review of applications of iron and steel slags for …
The iron and steel slag is characterized by highly alkaline nature and significant levels of metal ions, especially Ca. According to U.S. Geological Survey (USGS 2018), every year almost 15–20 million ton of iron/ferrous slag and about 10–15 million ton of steel slag is produced. These large quantities of slag are often stockpiled in huge ...
Restructuring Tangshan Iron and Steel | 20 | China's …
Restructuring Tangshan Iron and Steel. By John Hassard, Jackie Sheehan, Meixiang Zhou, Jane Terpstra-Tong, Jonathan Morris. ... in November 2005 Tanggang's acquisition of …
Sustainable phosphorus supply by phosphorus recovery …
Most of the steel is produced using the blast furnace-converter process. Fig. 2 (b) schematically shows phosphorus from molten steel to slag during the BOF (Basic Oxygen Furnace) steelmaking process. Beneficial from the steelmaking process, the phosphorus content in the iron ore (approximately 0.07 to 2 mass% P 2 O 5) is greatly …
Physicochemical properties of slags produced at various amounts of iron
The resulting slags, an oxide rich phase slag and a sulfide rich phase slag have different compositions and physicochemical properties. It was found that the increase in iron addition causes an increase in the softening melting point of the oxide rich phase slag by about 100 °C, and a twofold increase in the viscosity of both slag phases.
Steel Company Employees Indicted for Falsifying Emissions …
Lunan District People's Court in the city of Tangshan on Wednesday heard the case of Tangshan Songting Iron & Steel Co. Ltd.
Magnetic response of Arsenic pollution in a slag covered …
After large amounts of slag rich in iron sulfides and arsenic sulfides were piled on the top, the magnetic mineral composition within the covered soils changed due to a large eluted of iron ...
A green and efficient route for simultaneous recovery of low …
Section snippets Materials. The vanadium slag applied in this work was supplied by the Panzhihua Iron & Steel Group, Sichuan, China. Fig. 1 illustrated the phases and chemical compositions of vanadium slag which was …
By the hand of the smelter: tracing the impact of decision …
Slag analyses from archaeological iron smelting sites are common. Rigorous analyses of iron and slag from successful experimental smelting, however, are still rare. Furthermore, thorough analyses from a series of smelts, and of the slag produced in different phases of the smelt, are exceedingly rare. The present study investigates the …
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Slag in Tangshan Steel 40.30 15.38 12.73 2.54 9.05 1.88 14.06 1.01 Slag in Angang Steel 45.37 8.84 8.79 3.29 7.98 2.31 21.38 0.72 ... Steel slag can also be used as iron smelting flux, which can not only recover iron in steel slag, but also CaO and MgO in steel slag can be used as flux, saving the amount of iron smelting flux and reducing the cost.
Formation of magnetite-(apatite) systems by crystallizing
Magnetite-(apatite) ore deposits are interpreted as being formed by the crystallization of iron-rich ultrabasic melts, dominantly generated by the interaction of silicate melts with oxidized P-F-SO4-bearing sedimentary rocks. This hypothesis is supported by geologic evidence, experimental studies, numerical modeling, stable and …
Integration of coal gasification and waste heat recovery …
Here we report a novel approach to extract the waste heat and iron from high temperature steel slags (1450–1650 oC) produced in the steel industry, i.e., integration of coal gasification and ...
Tangshan—China's one time industrial pioneer striving for …
Tangshan is the second largest city in Hebei Province, China, with a total area of 13,472 m 2 and a population of nearly 8 million (7.76 million long term residents and 0.24 million short term migrant residents in the entire municipal jurisdiction, of whom 3.41 million live in the city proper). 1 The city's jurisdiction consists of 7 urban districts, 5 …
Application of iron and steel slags in mitigating greenhouse …
The iron and steel industry is a pillar of the national economy and an energy-intensive industry. In 2019, the global crude steel production reached 1868.8 million tons (Mt), of which China's crude steel production accounted for 996.3 Mt., that is, more than 50 % of the total, making the country the world's largest steel producer (World Steel …
Hydration of blended cement with high volume iron-rich slag …
The hydration of blended cements with up to 70 wt% iron-rich slag was investigated. Isothermal calorimetry revealed a retarding effect of the slag on Portland cement hydration during the first day ...