GB617975A - Method of producing iron powder - Google Patents

Method of producing iron powder

Info

Publication number
GB617975A
GB617975A GB873146A GB873146A GB617975A GB 617975 A GB617975 A GB 617975A GB 873146 A GB873146 A GB 873146A GB 873146 A GB873146 A GB 873146A GB 617975 A GB617975 A GB 617975A
Authority
GB
United Kingdom
Prior art keywords
iron
silicon
rustless
iron powder
compounds
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB873146A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEORGE MALECKI
Original Assignee
GEORGE MALECKI
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GEORGE MALECKI filed Critical GEORGE MALECKI
Priority to GB873146A priority Critical patent/GB617975A/en
Publication of GB617975A publication Critical patent/GB617975A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
    • B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors

Abstract

Iron powder is produced by reducing iron ore at a temperature below its softening point by rendering the iron powder rustless and separating the non-metallic particles from the rustless iron in an aqueous liquid. The iron particles are rendered rustless during or after reduction by treatment with nitrogen or a substance containing nitrogen, e.g. ammonium or cyanide compounds or silicon or silicon containing compounds, e.g. silica or silicon hydrogen compounds or by means of a passivating liquid, e.g. sodium or calcium hydroxide, potassium bichromate, or potassium ferrocyanide. The reduction may be made in a hydrogen atmosphere or in a treated natural gas and the ore may be mixed with 10 per cent of lime. The gangue may be separated by froth flotation, settling, tabling or wet magnetic separation in a passivating solution having a pH value over 7. It is stated that the iron particles become coated with a nitride or a silicon compound.
GB873146A 1946-03-21 1946-03-21 Method of producing iron powder Expired GB617975A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB873146A GB617975A (en) 1946-03-21 1946-03-21 Method of producing iron powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB873146A GB617975A (en) 1946-03-21 1946-03-21 Method of producing iron powder

Publications (1)

Publication Number Publication Date
GB617975A true GB617975A (en) 1949-02-15

Family

ID=9858178

Family Applications (1)

Application Number Title Priority Date Filing Date
GB873146A Expired GB617975A (en) 1946-03-21 1946-03-21 Method of producing iron powder

Country Status (1)

Country Link
GB (1) GB617975A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2757078A (en) * 1953-08-14 1956-07-31 Edstrom John Olof Method of producing metal powder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2757078A (en) * 1953-08-14 1956-07-31 Edstrom John Olof Method of producing metal powder

Similar Documents

Publication Publication Date Title
ES445703A1 (en) Recovery of lead, zinc and iron sulfide
GB996220A (en) Improvements in and relating to ores
GB617975A (en) Method of producing iron powder
US2410021A (en) Flotation process
GB619886A (en) Improvements in or relating to the deironing of chromium ores
GB340598A (en) Improvements in or relating to the froth flotation concentration of minerals
US1478697A (en) Selective flotation of minerals
RU1794492C (en) Method for enrichment carbonate-silicate fluorite ores
US2340580A (en) Process of purifying industrial sands
US1240597A (en) Flotation of minerals.
US1939068A (en) Recovery of copper minerals or values by froth flotation
US2824643A (en) Process for concentrating calcium ores
SU110520A1 (en) Method for selective flotation of lead-copper-zinc ores
GB554614A (en) Selective depression of minerals in barite flotation
SU1238799A1 (en) Method of flotation of clayey-carbonate slimes from potassium-bearing ores (its versions)
SU118472A1 (en) The method of obtaining pyrite concentrates from the tailings of copper and zinc flotation
GB655810A (en) Improvements in or relating to the concentration of silicious iron ores
GB621985A (en) Improvements relating to the treatment of limestone
SU1273172A1 (en) Method of dressing iron ores
GB651702A (en) Process for the chemical treatment of sand for glass-making
GB425362A (en) Improvements in or relating to the separation of minerals by flotation
SU66801A1 (en) Pyrochlore enrichment method
SU73371A1 (en) The use of wood ash as a reagent in the flotation of molybdenum ores
GB322527A (en) Improvements in or relating to the concentration of copper ores
GB613376A (en) Improvements in or relating to concentrating iron ore