Chapter 22 - Iron ore in Australia and the world: Resources, production, sustainability, and future prospects

IM-21 in Budapest: congress celebrates coming-of-age

Development of disaggregated energy use and greenhouse gas emission footprints in Canada’s iron, gold, and potash mining sectors

Low-carbon production of iron and steel: Technology options, economic assessment, and policy

20 - Life cycle assessment of iron ore mining and processing

With the depleting reserves of high-grade iron ore in the world, froth flotation has become increasingly important to process intermediate- and low-grade iron ore in an attempt to meet the rapidly growing demand on the international market. In over half a century's practice in the iron ore industry, froth flotation has been established as an efficient method to remove impurities fro m iron ore. In this chapter, the industrial practice and fundamental research activities of iron ore flotation are reviewed. The latest innovations in iron ore flotation at major iron ore operations around the world are introduced. The development of flotation routes fro m direct an ionic flotation to reverse cationic flotation, and the rising of reverse anionic flotation in China in recent years is discussed. Although direct anionic flotation was the first flotation route employed in the iron ore industry, it was later largely replaced by the more efficient reverse cationic flotation route. The application of reverse anionic flotation in Ch ina in recent years effectively overcomes some flaws of reverse cationic flotation such as high reagent cost and high metal loss in desliming. The reagents used in iron ore flotation, including starch, amines and fatty acids, and the mechanisms of their interactions with the minerals in iron ore are examined. The p resence of some specific impurities other than quartz in iron ore, such as alu mina containing minerals, i.e. kaolinite and gibbsite, and phosphorous, is detrimental and attracts penalties. The removal of these specific impurit ies has received increasing attention in the iron ore industry. The industrial pract ice and latest research activities in this area are closely reviewed.

Background. Ukraine holds one of the leading positions in the world among producers of iron ore: seventh place in iron ore extraction and about 5 % of the world's production of iron ore products. Regarding the importance of iron ore for the country's economy, iron ore and steel together accounted for 30 % of Ukraine's exports in 2017, with iron ore comprising 6.3 % of the total export volume. With the onset of war, the situation has changed, thus the development of a strategy for the development of the iron ore industry in Ukraine under conditions of war and taking into account the tasks of post-war recovery of the country with consideration of principles of efficient management of the utilization and replenishment of Ukraine's resource base is a relevant task. Methods. In the research process, general scientific (analysis and synthesis, induction and deduction, analytical grouping) and specific (abstraction, modeling, forecasting, statistical analysis, etc.) methods of studying phenomena and processes were used. Results. The article explores the state of the iron ore market in the world and Ukraine. To assess the situation in the iron ore industry of Ukraine, comparisons were made with global trends. The obtained results led to the conclusion that since 2003, there has been a correlation between the dynamics of iron ore extraction in the world and in Ukraine. As for price characteristics, similar trends in changes exist, but Ukraine's export prices are lower than global ones in absolute terms. The analysis revealed that the iron ore industry is the one that compensates for the economic losses of countries during crises or helps to overcome them. With this in mind, research was conducted on the relationship between the country's GDP and export volumes and export prices for iron ore and their global levels using correlation function. An economic-mathematical model was constructed, and the main influencing factors were identified. The study examined the impact of full-scale war on the state of the iron ore industry and its export capabilities. In the context of expected trends in the coming years, it has been proven that there is a justification for increasing ore exports to support the country's economy. Forecasting of trends in the development of the domestic iron ore industry (iron ore extraction, country's export capabilities) under conditions of war, considering the expected prospects for the development of the global market, has been carried out. Conclusions. The research demonstrates the key importance of the iron ore industry for the country's economy, including crises and overcoming their consequences. An economic-mathematical model of the industry's impact on the country's GDP, taking into account export flows, has been developed. This allowed forecasting the main parameters of the industry's development during wartime and post-war recovery of Ukraine.

Chapter 20 - Life cycle assessment of iron ore mining and processing

Chapter 1 - Introduction: Overview of the global iron ore industry

Analysis of life-cycle GHG emissions for iron ore mining and processing in China—Uncertainty and trends

EVERYONE WHO IS INTERESTED in the future of the American steel industry-and that really means everyone who is interested in the future of this countryshould be aware of the implications of Canada's emergence as one of the world's great iron ore producers. In 1939 there was no iron ore production in Canada proper, and had been none for 15 years. In 1956, Canada was the fourth largest ore producer in the world, and is just now beginning to hit its stride. The promise of a great Canadian iron ore industry which has been implicit for more than 60 years-ever since the classic explorations of A. P. Low, in the Labrador Trough late in the nineteenth century-is now becoming a reality. For as far into the future as anyone can see, Canada should continue to be a major producer. But every producer needs a customer, or several customers, and Canada has one right next door in the United States as well as her own growing steel producers. Already by far the world's largest iron ore consuming nation, we will soon be the world's largest ore importer as our steel production continues to rise. It is the existence of this market-and, to an increasing degree, the needs of Western Europe's steel industrythat will allow Canada's mining industry to reach its fullest and most profitable development. All this is really just another way of saying that Canada has an abundance of iron ore-more than it can use at home now, more than it can use at home any time in the foreseeable future, even recognizing the vigorous expansion of the Canadian steel industry which is now taking place. Last year, Canada produced approximately 17 million long tons of ore, 12 million of it from the newly developed Quebec-Labrador Range. Approximately 90% of the total was exported, principally to the United States, but also to Western Europe and Japan. Recently a study of probable production and consumption of iron ore around the world between now and 1980 was made. Parenthetically, let me remind you that if there is one generalization that can be made about forecasts on steel production or iron ore consumption it is this: in the last 15 years, they have universally been too low. This could well be the case with the figure I am going to quote to you now. It is estimated that by 1960 Canada will be producing approximately 20 million long tons of iron ore a year. By 1965 this could rise to 25 million tons; by 1970 to 30 million tons; by 1975 to 45 million tons; and by 1980 to 55 million tons. Such figures are indicative of a trend as everyone must realize that historically steel expansion goes in waves. Now, 55 million tons is a lot of iron ore. Before the war, which touched off 15 years unabated demand for steel, we considered it a lot for this country to produce. Iron ore mining, therefore, is certain to bulk very large in the over-all Canadian economy. THE HISTORY OF CANADIAN ORE

Recently rock magnetism is contributing to solve many geological problems. There are several types of remanent magnetization. In case of igneous rocks, magnetism arises from thermo-remanent magnetization. When the ferromagnetic mineral grows or changes chemically in the magnetic field under its curie point, it gets chemical or crystalline magnetization. In this paper, application of rock magnetism arising from chemical or crystalline remanent magnetization to economic geology was attempted. In order to achieve this purpose, the Shinyama ore body of Kamaishi iron and copper ore deposits was selected, because it is a typical contact metasomatic ore deposit and is a well exploited one. The Shinyama ore body consists of two iron ore bodies that contain magnetite and several copper ore bodies that contain pyrrhotite. Oriented samples were collected from many localities of the ore deposits systimatically. The direction and intensity of remanent magnetization, the magnetic susceptibility and other magnetic properties of ores were measured. The direction of remanent magnetization of each ore body is as follows. the iron ore…………………………Inclination 90°Down The 2nd copper ore body (closed to the iron ore body)……………{Declination 12°E INclination 48°Down The 4th copper ore body (200m distant from the iron ore body)…{Declination 333°E Inclination 53°Down From the view point of mechanism of magnetization, it is sure that the iron ore body gets the remanent magnetization which, roughly speaking, agrees with the direction of elongation of the ore body; and the 2nd copper ore body gets the remanent magnetization in the direction compounding geomagnetic field and magnetic flux of the iron ore body. By means of remanent magnetization together with other magnetic properties of ores, the direction of elongation of an ore body and the order of mineralization can be predicated.

Eighty per cent of the world's steelmaking is through the blast furnace route and hence the role of iron ore as a raw material and its quality become very critical to achieve steel with the best quality from hot metal. The world's iron ore resource base has been estimated at 180 000 million tonnes (MT), while the reserves are 79 000 MT. India ranks the sixth among producers of iron ore, with a 6200 MT reserve base. The majority of Indian iron ore deposits occur in the eastern, central and southern parts of India in the regions of Jharkhand, Orissa, Karnataka, Chhattisgarh and Goa. Among these provinces, the iron ores of Eastern India are of high quality and present in large quantities. Indian iron ore resources consist of both hematitic (10 052 MT) and magnetite (3408 MT) varieties. Major ore types are hard, flaky/friable, lateritic and blue dust or powdery ores. The ratio of lumps and fines in the deposits is 50 : 50, but the high grade lumpy variety is rare and constitutes <10% of the total reserves. India's iron ore production has just doubled in the last 5 years, achieving a total of 154 MT in 2005–06 compared with 86 MT in 2001–02. The Indian iron ores in general and Eastern Indian iron ores in particular consist of various impurities in the forms of Al, P and Si, and this poses major beneficiation problems especially in fines processing. The presence of these elements along with sulphur adversely affects the quality of iron ores and has a great bearing on performance of blast furnaces. Reduction of the alumina content in iron ore by 1% improves blast furnace performance by 3%, reduces reduction degradation index (RDI) by 6 points, lowers the coke rate by 14 kg per tonne of hot metal and increases sinter productivity by 10–15%. The presence of phosphorus and sulphur increases surface cracking during steel processing. High alkali contents lead to a lowering of the mechanical strength of coke and sinter, imbalances in the furnace operation and a reduction in furnace productivity. The Indian iron ore industry is going to face major challenges in the near future, as the production trend of iron ore worldwide is swinging up every year owing to the iron ore boom in recent years. It calls for mineral conservation and prevention of mineral losses in terms of wastes/slimes. This needs to be achieved through detailed exploration work, mine planning techniques, scientific exploitation and mineral beneficiation processes. For optimum utilisation of mineral resources, total beneficiation of iron ores, mineral rejects and wastes need to be augmented. In addition, alternative processes for ironmaking, such as COREX, ROMELT and HISMELT, need to be introduced by the major producers. This paper addresses the importance of quality raw materials in achieving benchmark iron- and steelmaking while maintaining the cost effectiveness. Emphasis has been given on the value addition of the subgrade and marginal-grade ores for mineral conservation and prevention of losses.

Remote sensing data have allowed detecting and monitoring of arrangement of mining and haulage machines in open pit mines producing coal and iron ore in Russia. In coal mining, the highest concentration of mining and haulage equipment is revealed in open pit mines in Kuzbass; in the iron ore industry, open pit mines in the Belgorod and Kursk Regions operate 70% of the total equipment employed in the mining sector. The authors draw a conclusion on the essentiality of strengthening of in-house mining machine engineering in Russia and on creation of interregional centers for maintenance and repair of mining and haulage equipment.

The use of a Reflux Classifier for iron ores: Assessment of fine particles recovery at pilot scale

Socio-economic and environmental impacts of the iron ore resource tax reform in China: A CGE-based analysis