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US3975186A - Method of making iron powder - Google Patents

Method of making iron powder Download PDF Info Publication number US3975186A. US3975186A US05/611,858 US61185875A US3975186A US 3975186 A US3975186 A US 3975186A US 61185875 A US61185875 A US 61185875A US 3975186 A US3975186 A US 3975186A Authority US United States Prior art keywords iron oxide reducing reduction powder Prior art date 1974-09-12 Legal status (The

US2721134A - Method of making iron powder - Google Patents

The process according to the present invention makes use of a waste product, namely furnace dust from blast furnace installations, as the starting material for the production of sintered iron...

CA1057537A - Method of making iron powder - Google Patents

Method of making iron powder Info Publication number CA1057537A. CA1057537A CA234,948A CA234948A CA1057537A CA 1057537 A CA1057537 A CA 1057537A CA 234948 A CA234948 A CA 234948A CA 1057537 A CA1057537 A CA 1057537A Authority CA Canada Prior art keywords iron oxide reducing reduction powder Prior art date 1974-09-12 Legal status (The legal status is an assumption

Method of making iron powder - Mannesmann Aktiengesellschaft

The "Journal Iron and Steel Inst.", London, 1956 pages 90 to 96, describes a method of making still lighter iron powder. Iron oxide (Fe 2 O 3) is reduced to sponge iron in a pure hydrogen atmosphere at temperatures from 760° to 980°C. The iron sponge is then broken into particles by means of wire brushes to obtain a powder having grain size from 53 to 74 μ. Subsequently, the powder is ...

US3212876A - Method for the production of iron powder from ...

A method for the production of iron powder from sponge iron, comprising subjecting the sponge iron to a compacting cold-working treatment, annealing'the coldworked sponge iron in a protective...

METHOD OF MANUFACTURING IRON POWDER AND IRON POWDER ...

A method of manufacturing iron powder including chromium (Cr), the method comprising: preparing molten steel including carbon (C): 0.1 to 0.4 wt %, silicon (Si): 0.1 to 0.25 wt %, and manganese (Mn): 0.3 wt % or less, further including chromium at a content 1 to 30 wt % higher than a target content of chromium (Cr) in finally produced iron powder; and including unavoidable impurities and a ...

US2237867A - Method of making sponge iron powder - Google ...

Method of making sponge iron powder Download PDF Info Publication number US2237867A. US2237867A US363339A US36333940A US2237867A US 2237867 A US2237867 A US 2237867A US 363339 A US363339 A US 363339A US 36333940 A US36333940 A US 36333940A US 2237867 A US2237867 A US 2237867A Authority US United States Prior art keywords iron particles powder oxide iron powder

Method of making iron-based powder mixture - Kawasaki ...

1992-09-22  Method of making iron-based powder mixture . United States Patent 5279640 . Abstract: An iron-based powder mixture for powder metallurgy essentially consists of a melted mixture, as a binder, which includes about 0.1% to about 1.0% by weight of a powder of at least one organic compound selected from stearic acid, oleic acid amide, and stearic acid amide, and about 0.1% to

method of making iron powder - erntefest2019.de

method of making iron powder_US3975186A Method of making iron powder Iron oxide particles are made by spray calcination and the oxide is reduced at least substantially in CO at temperatures between 800° and 1000° C. T

Powder Production Technologies - Powder Metallurgy Review

Iron powder production. In tonnage terms, the production of iron powders for PM structural part production dwarfs the production of all of the non-ferrous metal powders combined. Virtually all iron powders are produced by one of two processes. The sponge iron process. The longest established of these processes is the sponge iron process, the leading example of a family of processes involving ...

Preparation Methods of Metal Powder Industry Information

Preparation Methods of Metal Powder. Powder metallurgy is a process for preparing metal powders and using metal (or metal and non-metal mixture) powder as raw materials to form parts and products by molding and sintering. As the main raw material of the industry, metal powder is widely used in the fields of machinery, metallurgy, chemical industry, and aerospace materials.

IRON POWDER, USE AS ADDITIVE FOR FOODS, FOOD ADDITIVE

Method for producing a reduced iron powder as defined in any one of the claims 1-4 comprising the steps of - providing a starting material of an iron oxide powder having a particle size less than 55 µm - reducing said powder at a temperature less than 1100°C to a porous sintered cake - crushing and sieving the obtained cake to a powder having the desired particle size. 8. Method according to ...

4 Ways to Make Iron Oxide - wikiHow

2021-08-22  Method 1 of 4: Making Iron (II,III ... Also, a fine rust powder would work well. You can collect rust and grind it to a fine powder if you choose to go that route. 2. Make a solution containing iron (III). Add water to the iron (III) oxide source in a beaker (or another Limestone container of similar size). The aqueous environment (in water) is ideal for the iron (III) and iron (II) molecules to ...

US5754936A - Iron powder components containing ...

The present invention concerns a method, according to which powder compositions of iron-based particles are admixed with a thermoplastic material and a lubricant. The obtained mixture is compacted at a temperature below the Limestone-transition temperature or melting point of the thermoplastic resin and the compacted product is heated in order to cure the thermoplastic resin.

Powder metallurgy - Wikipedia

Powder metallurgy (PM) is a term covering a wide range of ways in which materials or components are made from metal powders.PM processes can avoid, or greatly reduce, the need to use metal removal processes, thereby drastically reducing yield losses in manufacture and often resulting in lower costs.. Powder metallurgy is also used to make unique materials impossible to get from melting or ...

Making Metal Powder - MPIF

Making Metal Powder. The first step in the overall powder metallurgy (PM) process is making metal powders. There are four main processes used in powder production: solid-state reduction, atomization, electrolysis, and chemical. Solid-State Reduction. In solid-state reduction, selected ore is crushed, typically mixed with carbon, and passed through a continuous furnace. In the furnace, a ...

method of making iron powder - emergence-developpement.fr

Method of making iron powder - FPO IP Research Communities. Jan 15, 2011 Using bleach and steel wool is a quick, easy, and relatively safe way to make iron oxide ("rust"). Make sure you use the right type of bleach. You want to use chlorine bleach (bleach

method of making iron powder - restaurantgranditalia.nl

براءة الاختراع US3975186 - Method of making iron powder ,Iron oxide particles are made by spray calcination and the oxide is reduced at least substantially in CO at temperatures between 800° and 1000° C The oxide is heat .Preparation of Metal Powders - Annual ReviewsTHERMAL DECOMPOSITION In this method of powder production the metal , powder Iron carbonyl powder is typically ...

IRON POWDER, USE AS ADDITIVE FOR FOODS, FOOD ADDITIVE

Method for producing a reduced iron powder as defined in any one of the claims 1-4 comprising the steps of - providing a starting material of an iron oxide powder having a particle size less than 55 µm - reducing said powder at a temperature less than 1100°C to a porous sintered cake - crushing and sieving the obtained cake to a powder having the desired particle size. 8. Method according to ...

Powder Metallurgy Method - an overview ScienceDirect Topics

Metal injection molding (MIM) is a variation of powder metallurgy methods that has been used for synthesizing iron and Invar matrix syntactic foams containing Limestone hollow particles. An outline of the MIM method is shown in Fig. 11 . 28 A major complication for synthesizing these foams is that the melting temperatures of iron and Invar are significantly higher than the softening temperature of ...

patent us method of making an iron polymer powder

US2721134A - Method of making iron powder - Google Patents Method of making iron powder Download PDF Info Publication number ... which in the example is 25% with a grain 40 UNITED STATES PATENTS size of 0.15 mm., should be modified by 0.2 and 0.3 mm-, 156,093 La Rue Oct. 20, 1874 this can readily be achieved by varying the frequency 1,517,402 ... Which is the best hydrophilic polymer

POWDER METALLURGY - SlideShare

2014-12-20  THE CARBONYL PROCESS • The only method for the manufacture of metal powder by the pyrolysis of a gaseous compound which has been used industrially on a substantial scale is the carbonyl iron or nickel process. • When iron and nickel ores react under high pressure (70 – 300 atm.) with carbon monoxide, iron pentacarbonyl [Fe(CO)5] or nickel tetracarbonyl [Ni(CO)4] is formed,

Quantitative Determination of Metallic Iron Content in ...

Five synthetic samples, mixing the pure metallic iron powder and iron oxide powder (a mixture of FeO and Fe 2O 3), were tested to verify the test method. Six slag samples from the different sites have also been tested. Results and Discussion Table 1. Test results for five synthetic samples Test Metallic Iron Powder FeO and Fe 2O 3 Powder Measured

Iron, Total - Hach

FerroMo Iron Reagent 1 Powder Pillow to the mixing cylinder. 4. Close the cylinder. Invert several times to mix. 2 Iron, Reactive and Total in presence of Molybdate, FerroMo Method (1.80 mg/L) 5. Fill a clean 25-mL mixing cylinder to the 25-mL mark with the prepared sample. Use the rest of the sample to prepare the blank. 6. Prepare the blank: Fill a second sample cell with 10 mL of the ...