processing methods iron slag

  • CA2851604C

    The method of reduction processing of steel-making slag, includes: a hot steel-making slag inflow process of continuously or intermittently charging, from a slag supplying container, hot steel-making slag to a molten slag layer on a molten iron contained in an electric furnace while adjusting an amount of inflow with the slag supplying container; a reducing agent supplying process of supplying ...

  • Steel Slag

    In the primary process, crude steel is produced in two ways. In the first method, the iron is produced from ore in the BF, thus, generating BF slag (BFS). BBOF slag (BOFS) is produced in the steelmaking process by using the molten iron coming from the BF. In the second method, slags are generated in the scrap-based steel industry.

  • Slag recycling

    Iron and steel slags are valuable raw materials that are obtained during the pig iron and crude steel production processes. Two main production methods are involved (Fig. 1). In the iron ore-based process, pig iron is produced from oxidic iron ores in a blast furnace.

  • Chemistry and Mineralogy of Titanium-rich Slags

    cess is either sold as pig iron or converted into steel or even atomized into iron or steel powders, respectively. Another part of the production of the crude titania-rich slag is further acid-leached under a high-pressure and moderate-temperature hydrometallurgical process to yield an upgraded titania slag with 94.5 mass percent TiO 2. The ...

  • iron processing

    iron processing - iron processing - The metal: Most blast furnaces are linked to a basic oxygen steel plant, for which the hot metal typically contains 4 to 4.5 percent carbon, 0.6 to 0.8 percent silicon, 0.03 percent sulfur, 0.7 to 0.8 percent manganese, and 0.15 percent phosphorus. Tapping temperatures are in the range 1,400° to 1,500° C (2,550° to 2,700° F); to save energy, the hot ...

  • Refining (metallurgy)

    The pig iron was melted in a running out furnace and then run out into a trough. This process oxidised the silicon to form a slag, which floated on the iron and was removed by lowering a dam at the end of the trough. The product of this process was a white metal, known as finers metal or refined iron…

  • 12.5 Iron And Steel Production

    0.2 to 0.4 tons of slag, and 2.5 to 3.5 tons of blast furnace gas containing up to 100 pounds (lb) of dust. The molten iron and slag are removed, or cast, from the furnace periodically. The casting process begins with drilling a hole, called the taphole, into the clay-filled iron notch at the base of the hearth.

  • TENORM: Copper Mining and Production Wastes | Radiation ...

    Mining and Processing Methods. ... One layer is a waste containing iron and silica compounds and is discarded as slag slagByproduct left after a desired metal is thermally separated from its raw ore.. Approximately 75 percent of the copper concentrate ends up as slag.

  • Behavior of copper and lead during mineralurgical and ...

     · There are only a few smelters processing copper concentrates directly into blister copper. Despite the many advantages of this process, a serious challenge of this technology is the need to process the resulting flash smelting slag. It contains 12–15% copper and 2.5–4% lead. In this form, it cannot be considered as waste material and, therefore, a high-temperature reduction process is ...

  • What''s the Process of Iron Smelting?

     · The main products of blast furnace smelting are pig iron and ferroalloy, and the by-products are slag, gas and furnace dust. pig iron. Pig iron is an iron carbon alloy with more than 2% carbon, which also contains Si, Mn, s, P and other impurities. Pig iron can be divided into two categories according to its use and composition.

  • RECOVERY OF COPPER FROM COPPER SLAG AND COPPER …

    The slag and the slag flotation tailings were leached with ferric sulphate in 1 M sulphuric acid. The ferric iron concentration was varied in the range from 5 g/dm3 to 40 g/ dm 33and from 5 g/ dm to 20 g/ dm for the slag and the slag flotation tailings, respectively. The results are shown in Figure 4.

  • An investigation of a single-stage red mud reducing ...

    These methods may be subdivided into hydro- and pyrometallurgical according to the treatment An investigation of a single-stage red mud reducing roasting process with the cast iron and aluminate slag production Red mud is a technogenic waste product, a result of alumina production. It …

  • Reducing Slag and Dross in Ductile Iron Castings | Foundry ...

     · Even if gray iron is not as dirty as ductile, slag is a considerable concern. For this reason, it is important to minimize slag in gray iron too, and DISPERSIT definitely helps to achieve this. For gray iron, it is recommended that DISPERSIT should be introduced at the inoculation step; The recommended addition rates (0.1 – 0.2% by weight ...

  • Steel slag in China: Treatment, recycling, and management ...

     · 1. Introduction. Steel slag is the oxidized material that is generated when lime, dolomite, and other auxiliary materials are added, and oxygen is blown onto the pig iron produced by a blast furnace to remove carbon (C), phosphorus (P), sulfur (S), and other components to produce crude steel in a basic oxygen furnace (BOF).

  • iron processing | Britannica

    iron processing, use of a smelting process to turn the ore into a form from which products can be fashioned cluded in this article also is a discussion of the mining of iron and of its preparation for smelting. Iron (Fe) is a relatively dense metal with a silvery white appearance and distinctive magnetic properties. It constitutes 5 percent by weight of the Earth''s crust, and it is the ...

  • Slag Atomising Technology (SAT): Strategic management of ...

     · BF (blast furnace) slag is generated in iron production and EAF (Electric Arc Furnace) slag is generated by steel production. The same is with Basic Oxygen Furnace (BOF) slag. Processing of EAF using traditional methods involves crushing and grinding. However, the new technology of atomising molten slag is an innovative process that produces ...

  • Iron and Steel Slag Statistics and Information

    Iron and steel slags are coproducts of iron and steel manufacturing. In the production of iron, the blast furnace is charged with iron ore, fluxing agents, usually limestone and dolomite, and coke as fuel and the reducing agent. The iron ore is a mixture of iron oxides, silica, and alumina. From this and the added fluxing agents molten slag and ...

  • Recycling Nickel Slag by Aluminum Dross: Iron-extraction ...

    ondary sources due to the amounts of iron contents. The iron content can reach up to 50 wt%.1,2) With the growing demand of nickel products nowadays, nickel slag is dis-charged continuously. It is estimated that 6–16 tons of nickel slag in flash smelting process are generated per ton of nickel produced.3,4) Taking Jinchuan Group Co. Ltd ...

  • Removal of Arsenic During Iron Extraction from Waste ...

     · Substantial quantities of openly dumped slag contribute to the absence of recovery and utilization of valuable metals as well as potential environmental pollution to water and soil. Owing to the excessively high arsenic content present in iron extracted from copper smelting slag, we propose a new arsenic removal process in this paper. The results indicate that arsenic sulfides in copper ...

  • Emerging Technologies for Iron and Steelmaking

    There are several methods by which a limited supply of hot metal could be stretched by increasing scrap utilization. Process optimization of current oxygen steelmaking technologies will result in small improvements in yield by reducing both the iron content and total volume of slag produced.

  • How iron is made

    Historically, iron was produced by the hot-blast method, or later, the anthracite furnace. Either way, the fundamental activity in iron making involved a worker stirring small batches of pig iron and cinder until the iron separated from the slag.

  • The method of metallurgical slag processing

    The disadvantage of this method of processing steel slag is that it cannot provide a sufficiently high degree of extraction of the metal from the slag mass, and thus obtaining a road mix high technological parameters, and following the practical essence and the achieved result is a way of metallurgical slag processing, includes two stages of ...

  • US20150000467A1

    The present invention provides a method of separating and recovering iron from a waste non-ferrous slag, generated in a process for smelting of non-ferrous metals, including copper, zinc and lead, in which a reducing agent and a reaction catalyst are added to the crushed waste non-ferrous slag, and the mixture is subjected to a reduction reaction, thereby converting amorphous iron oxides ...

  • A method of processing vanadium-containing slag

    A method of processing vanadium-containing slag, including translation of vanadium from iron-carbon alloy in the molten slag, cooling, obtaining slag specified fractional composition and the extraction of vanadium from the slag in the exercise compressed gases, and/or water, or freezing in the refrigerator, transfer of soluble vanadium ...

  • A physico-chemical separation process for upgrading iron ...

     · The pyrometallurgical process is a method that mixes waste copper slag with various fluxes such as alumina, calcium oxide, magnesium oxide, silica as a slag composition regulator, and carbon as a reducing agent, and then melts the mixture at a high temperature of about 1673–1723 K, thereby separating and recovering iron as an alloy form from ...

  • US9217185B2

    The method of reduction processing of steel-making slag, includes: a hot steel-making slag inflow process of continuously or intermittently charging, from a slag supplying container, hot steel-making slag to a molten slag layer on a molten iron contained in an electric furnace while adjusting an amount of inflow with the slag supplying container; a reducing agent supplying process of supplying ...

  • The fold-processing of bog iron

    Fold-processing. We used a folding and forging process as our chosen method to remove impurities and consolidate the bloom iron. This proved to take large parts of the project period and vast amounts of charcoal. The first couple of times we heated the bloom, the largest pockets of slag would liquefy and flow into the forge.

  • gold processing methods iron slag

    Iron Smelter Slag Chrusing Methods. Processing Methods Iron Slag; Iron processing, use of a smelting process to turn the ore into a form from which products can be fashioned. Included in this article also is a discussion of the mining of iron and of its preparation for smelting.

  • Types of iron and steel slag : NIPPON SLAG ASSOCIATION

    Iron and steel slag refers to the type of metal manufacturing slag that is generated during the process of manufacturing iron and steel products. The term "slag" originally referred to slag produced by metal manufacturing processes, however it is now also used to describe slag that originates from molten waste material when trash and other ...

  • Slag aggregates in concrete

    Steelmaking Slag - an overview | ScienceDirect Topics

  • NICKEL RECOVERY FROM ELECTRIC ARC FURNACE SLAG BY …

    following methods have been applied for metal recovery: • Steel slags. They are produced in Basic Oxygen Furnace (BOF) and Electric Arc Furnace (EAF). Because iron in the steel slags is normally encountered in the form of steel (7–10 %), iron oxide and iron bearing minerals, the recovery of iron is …

  • Fast Assessment of Total Iron Contents in Steelmaking ...

     · The existing industrial method for determining the total iron contents in the steelmaking slag products [9, 10] has not been well documented in the literature, but widely accepted and used in the slag processing industry. Nevertheless, there are excellent standard methods to perform a water displacement test to determine densities of various ...

  • Recovery of metal values from copper slag and reuse of ...

    The work established that the copper slag, a waste material, can be successfully processed to generate reusable products through pyrometallurgical processing. Keywords: Carbothermal reduction; Copper slag; Iron-rich alloy; Recycling; Secondary slag.

  • gold processing methods iron slag

    SLAG CRUSHING & PROCESSING Stone Crusher And Mill. Nov 09, 2015· SLAG CRUSHING & PROCESSING Slag utilization methods, according to the characteristics of slag and finished requirement, you can choose to use crushing screening equipments, iron removal equipment and grinding equipments for processing them, and according to the requirements to ...