iron concentrates desulfurization device and agents

Antimony Recovery from End-of-Life Products and …

 · Antimony has become an increasingly critical element in recent years, due to a surge in industrial demand and the Chinese domination of primary production. Antimony is produced from stibnite ore (Sb2O3) which is processed into antimony metal and antimony oxide (Sb2O3). The industrial importance of antimony is mainly derived from its use as flame retardant in plastics, coatings, and …

Myocardial iron overload in transfusion-dependent …

We present three pediatric patients with acute leukemia whose therapy-induced anemia was treated with different amounts of red blood cell concentrates (RCC). In all patients, a liver iron overload was measured by super-conducting interference device (SQUID) biosusceptometry and …

Materials Processing Fundamentals | Wiley Online Books

 · Along with the fundamentals, it covers modeling of diverse phenomena in processes involving iron, steel, non-ferrous metals, and composites. It also goes on to examine second phase particles in metals, novel sensors for hostile-environment materials processes, online sampling and analysis techniques, and models for real-time process control and quality monitoring systems.

Proceedings: Flue Gas Desulfurization Symposium

The iron sulfides react with the limestone flux, releasing the iron and fixing the sulfur as calcium sulfate which must be discarded. The carbon which is dissolved in the molten iron is reacted with steam and air to produce a sulfur-free synthesis gas of CO, H2/ and nitrogen oxides.

Glass-Based Processing of Mixed-Oxide Desulfurization …

The favorable thermodynamics of the reaction between H2S and oxides of iron, nickel, and zinc make these materials suitable for the sorption of sulfur from coal-derived synthesis gas. As an alternative to traditional solid-state processing, the suitability for coal gas desulfurization of glass-ceramics based on transition metal oxides has been evaluated. Glass-ceramics based on NiAl2O4 and ...

Oxygen Blowing

A rise in the concentration of iron oxides in the slag promotes dissolution of lime, which favors desulfurization. The secondary and most intensive desulfurization occurs at the end, and at the heat when the lime dissolves in the slag with a maximum rate and the slag basicity (B) reaches 2.8 or more.

Ironmaking

 · Slag and iron are separated in the main trough, where the melts settle, iron flows under the skimmer stone and slag stands behind the skimmer stone and is directed to granulating device or slag pit. The hot metal flows through the skimmer, which separates the slag from the hot metal to ladles or torpedo cars to be transported to hot metal treatment (e.g., desulfurization) and hot metal mixers ...

Air Pollution Aspects of Emission Sources: Iron and …

A portion of these iron concentrates is roasted and the resulting calcine is treated in electric furnaces to produce 300 tons of pig iron per day. The sulfur dioxide produced in the roasting process is used to make sulfuric acid which is em- ployed in the manufacture of ammonium phosphate fertilizers.

An Efficiency Evaluation of Iron Concentrates Flotation Using …

The effect of a rhamnolipid biosurfactant produced by a Pseudomonas aeruginosa MA01 strain on desulfurization of iron concen trates was studied. Surface tension measurement and frothing characterization indicated better surface activity and frothability of

Iron concentration determination

Iron concentration determination. With the MDPingot and MDPmap series it is possible to measure the iron concentration in bricks and wafers fully automated and with a very high resolution. Lifetime measurements before and after iron boron pair dissociation is a widely used method for iron determination in silicon wafers.

Method for desulfurization of coal (Patent) | DOE Patents

@article{osti_866301, title = {Method for desulfurization of coal}, author = {Kelland, David R}, abstractNote = {A process and apparatus for desulfurizing coal which removes sulfur in the inorganic and organic form by preferentially heating the inorganic iron sulfides in coal in a flowing gas to convert some of the inorganic iron sulfides from a pyrite form FeS b.2 to a troilite FeS form or ...

Desulfurization of Iron Ores: Processes and Challenges

Various studies have been increasingly performed on the reduction of sulfur content of iron ores and concentrates. The presence of sulfur in these materials causes technical problems in steel and alloys and environmental issues in the sintering of iron ore process.

Adverse effects of 9 elements in iron ore on its smelting | …

 · It mainly consists of iron concentrates and rich iron powder mixing with agents of fusion. The iron ore contained are mainly magnetite and hematite, and main binding minerals are fayalite (2FeO•SiO 2) and kirschsteinite (CaO•FeO•SiO 2). The sintered acid iron ore ...

Optimization of Desulphurization Process using Lance Injection in …

tions and the utilization rate of the desulfurization agent, for the molten iron of sulfur content ˜0.035%, a new injection desurphurization mode was developed and applied. The smaller injection rate of powder and the larger flow rate of nitrogen were used in the slow

Ironmaking and Steelmaking | Standard Journal …

ISO4 Abbreviation of Ironmaking and Steelmaking. ISO 4 (Information and documentation – Rules for the abbreviation of title words and titles of publications) is an international standard, defining a uniform system for the abbreviation of serial publication titles. One major use of ISO 4 is to abbreviate the names of scientific journals.

12.5 Iron And Steel Production

12.5 Iron And Steel Production 12.5.1 Process Description1-3 The production of steel at an integrated iron and steel plant is accomplished using several interrelated processes. The major operations are: (1) coke production, (2) sinter production, (3) iron production ...

Conceptual Design of a Commercial Scale Plant for …

Utilize existing technology to react iron sulfates from chemical desulfurization to yield S0« and iron oxide. Use other technology to produce H?S and iron oxides from pyrite concentrates derived from coal washing. Combine the S02 and H-S in a Glaus-type process ...

Press

Technologies combining a volumetric dosing device for Magnesium (Mg) and a pressure dispenser for Calcium Oxide (CaO). Low sulfur levels of lesser than 0,005% (50ppm) can be achieved. The consumption of desulfurization agents is significant reduced and

Desulfurization mixture and process for desulfurizing pig …

This separates out on cooling of the pig iron, during the time of the desulfurization treatment, due to the reduction of the solvent capacity of the iron for carbon. Finally, the desulfurization slag can also contain carbon originating from carbon-containing additives or components of the desulfurizing reagent (for example graphite, coal, coke or diamide lime).

Improvement of Desulfurization Efficiency of Molten Iron with …

In our previous articles, a new desulfurization method of molten iron by the use of MgO-C[17] and MgO-Al pel-lets[18,19,20] was described. The pellets, containing magnesium oxide and carbon or aluminum powders, were charged into a refractory tube, which

Effect of complexing agents in the desulphurization of …

 · The pyritic sulphur extraction from a sub-bituminous coal in an oxidizing aqueous media was examined. The results show that the pyritic coal desulphurization in H 2 SO 4 solutions and in presence of H 2 O 2 could be effectively increased to 89% by the addition of complexing agents such as quercetin, phosphoric, oxalic and citric acids.

Desulfurization of pure coal macerals (Conference) | …

 · @article{osti_5436770, title = {Desulfurization of pure coal macerals}, author = {Hippo, E J and Crelling, J C}, abstractNote = {The objectives of this study were to modify the present density gradient centrifugation (DGC) techniques for coal macerals to obtain 10-20 grams of target maceral concentrates and to determine the reactivity or ease of removing the organic sulfur in the various ...

Removal of Potassium and Iron in Low Grade Bauxite by a Calcination-Acid Leaching Process …

desulfurization, and synthesizing mineral processing agents that serve the aluminum industry [10]. However, very few studies report on the purification of bauxite from the refractory point-of-view. To balance the usage of bauxite resources in the two industries and ensure their sustainable

Processes | Free Full-Text | Extraction of Cobalt and Iron …

In this study, oxidizing roasting, segregation roasting, and magnetic separation are used to extract cobalt and iron from refractory Co-bearing sulfur concentrate. The Co-bearing sulfur concentrate containing 0.68% Co, 33.26% Fe, and 36.58% S was obtained from V-Ti magnetite in the Panxi area of China by flotation. Cobalt pyrite and linneite were the Co-bearing minerals, and the gangue ...

mineral iron ore, mineral iron ore Suppliers and …

5,257 mineral iron ore products are offered for sale by suppliers on Alibaba , of which mineral separator accounts for 23%, mine mill accounts for 12%, and iron ore accounts for 1%. A wide variety of mineral iron ore options are available to you, such as none, egypt, and germany.

The Iron Distribution and Magnetic Properties of …

 · Interestingly, most of the iron seems to be accumulated as iron-phosphate in pores in the eggshell. However, the magnetization of the eggs was comparatively weak and the iron content was low. Furthermore we did not observe any movement of the eggs in magnetic fields and field gradients of a similar order of magnitude to those used in the Helmintex protocol.

Desulfurization of Iron Ores: Processes and Challenges

 · Various studies have been increasingly performed on the reduction of sulfur content of iron ores and concentrates. The presence of sulfur in these materials causes technical problems in steel and alloys and environmental issues in the sintering of iron ore process.

iron ore processing

 · 01 Iron Ore Desulfurization Processing Stage grinding – stage processing desulfurization The grinding fineness has a large influence on pyrite-bearing iron ore benefication. Different grinding fineness inflluences the dissociation degree of mineral monomer and ...

(PDF) Reduction of Copper and Iron Oxide Mixture with …

Khojiev Shokhrukh, Berdiyarov Bakhriddin, Mirsaotov Suxrob. Reduction of Copper and Iron Oxide Mixture with Local Reducing Gases. Acta of Turin Polytechnic University in …

CN112708753A

The invention discloses a method and a system for deep desulfurization treatment of iron ore concentrate, wherein the method comprises the following steps: magnetic separation treatment → pulp making treatment → oxidation treatment → aging treatment, pulp ...

Desulphurization of pig iron using calcium carbide based reagents …

Use of calcium carbide based reagents is a long established practice for the desulphurization of pig iron/hot metal resulting in the removal of the sulphur from the molten metal as calcium sulphide into the slag floating on the molten metal surface. At SA Calcium Carbide desulphurizer reagents are produced by blending calcium carbide with various ...