Determination Of Metallic Iron Research Articles

Development of a method for determination of metallic iron content within hot briquette iron (HBI) for steelmaking

The growing use of metallic iron in metallurgy and industrial chemical applications requires a fast, easy and cheap method for the determination of metallic iron, not merely in recyclable materials, such as iron pellets, reduced iron mill scale dust, electric arc furnace dust and pig iron, but from hot briquette iron (HBI) as well. This study investigates a new method for determination of metallic iron within HBI used for steel-making materials. The effects of reaction time, temperature, and stirring rate were studied. The concentration of iron was determined via Atomic Absorption Spectroscopy (AAS). After the optimization study, high-purity metallic iron powder (Sigma-Aldrich, PubChem Substance ID 24855469) was used to compare efficiencies and identify the optimum conditions; The present study was matched with international standard methods (BS ISO 5416:2006, IS 15774:2007). Results were consistent with certified values and metallic iron content could be determined within the 95% confidence level. The purposed method is easy, straightforward, and cheap.

Quantitative Determination of Metallic Iron Content in Steel-Making Slag

A quantitative analytical method for metallic iron was developed for wastes from iron and steel mills. These wastes consist of slags, dusts and sludges, mill scales, spent pickle liquor, and other iron-bearing materials. Accurate determination of metallic iron in these wastes will provide the vital information for the recycling or reuse of these wastes. The new procedure for the determination of metallic iron (Fe0) was developed and various factors that could affect the test result were determined. Pure metallic iron powders were mixed with pure iron oxides with various ratios and then were tested using this method. Testing results had excellent agreement with actual concentration. Samples from several sites have been tested.

Determination of metallic iron in wear debris using a wear particle analyzer

A study was conducted to investigate the capability of a wear particle analyzer (WPA) in quantitatively determining the concentration of ferromagnetic particles in used lubricants. The effects of sample volume, particle size, particle type, sample flow rate and type of magnetic filter on the WPA reading have been determined using iron powders and an iron oxide suspended in oils, wear metals generated from a wear test machine and used oils from operational aircraft jet engines. Acid dissolution, solvent extraction and magnetometer techniques were used to examine the accuracy of the WPA. Filters made from micron steel fiber and compressed with a high force gave the highest WPA readout. The optimun sample volume was approximately 2 ml and the effective particle size captured by the WPA filter was less than 3 μm. Higher flow rates improved the results for iron powders. The study reveals that the WPA is an adequate analytical tool for analyzing used oils for metallic iron particles and can be used to supplement other oil analysis techniques.

The determination of metallic iron in the presence of fayalite

In a proposed new procedure the sample is treated with bromine, the excess of bromine removed, and the residue extracted with methanol. After filtration the filtrate is evaporated to remove methanol and the bromides are dissolved in hydrochloric acid for determination of metallic iron. The oxide residue from the filtration is fused in sodium peroxide and then dissolved in hydrochloric acid for the determination of iron present either as oxide or silicate. Iron in the hydrochloric acid solutions from the residue and filtrate is determined either by titration with standard potassium dichromate solution or by atomic-absorption spectrometry.

Determination of metallic iron in reduced iron

X線回折計による還元鉄中の金属鉄定量法についてはすでに報告したが,還元鉄には還元鉄鉱石のほかに海綿鉄,粒鉄などがあり,これらは粉砕しがたく,X線回折計で定量することが困難であるので,化学分析による定量方法を研究した.臭素のメタノール溶液によって,金属鉄を選択的に溶解する方法について,化学分析,X線回折,赤外吸収分析によって検討した.臭素のメタノール溶液にアセトンを加えた溶液を用いると,金属鉄は選択的に溶解した.アセトンの存在はEDTA滴定の妨害とならなかった.種々の還元鉄中の金属鉄を定量し,X線回折計による定量値と比較した結果,定量値はよく一致した.

Determination of metallic iron, iron(II) oxide, and iron(III) oxide in a mixture

A procedure is described for the estimation of metallic iron, ferrous oxide, and ferric oxide when present together. The sample is treated with bromine dissolved in ethanol, and filtered. Iron in the filtrate is titrated iodometrically, and corresponds to the metallic iron present in the mixture. The oxide residue is dissolved in hydrochloric acid under a carbon dioxide atmosphere. The iron(II) formed, equivalent to FeO present, is titrated with a standard vanadate solution, and the total iron(III) (FeO + Fe 2O 3) in the titrated solution is then estimated iodometrically.

New spectrophotometric thiocyanate determination of iron in metals, alloys, acids and salts

A rapid, sensitive and fairly selective spectrophotometric thiocyanate method for the determination of traces of iron in metals, alloys, acids and salts is described. The iron is isolated from the bulk of the sample by solvent extraction with methyl isobutyl ketone from 7N lithium chloride solution or 7N hydrochloric acid. The iron (III) thiocyanate color is developed directly in the ketone extract and then measured spectrophotometrically.

The determination of iron in metals and minerals by controlled-potential coulometry

The determination of iron in metals and minerals by controlled-potential coulometry

還元マンガン鉱石中の金属鉄の分別定量法

還元マンガン鉱石中の金属鉄の分別定量法