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Patent Of Iron Ore Process

Process Of Producing Pig Iron From Iron Ore Concentrate

We claim 1. In a process for producing pig iron by reducing iron ore concentrate in which solid pre-reduced iron ore, coal, oxygen gas, and slag formers are injected beneath the surface of a molten iron bath contained in a reactor vessel, and react to produce said pig iron, slag, and exhaust gases including CO 2, CO, H 2 and H 2 O, the improvement comprising.

Effect Of Hyl Process Parameters On The Quality Of Iron

Dominguez-ahedo et al.-1983-united states patent (method for the gaseous reduction of iron ore to sponge iron) 1977-united states patent (Process for the production of sponge iron) Altenhoner.

Process Of Making Iron From The Ore

Process of making iron from the ore. This web page summarizes information in PubChem about patent US-816142-A. This includes chemicals mentioned, as reported by PubChem contributors, as well as other content, such as title, abstract, and International Patent Classification (IPC) codes.

Iron Ore Concentration Process With

WO 2014 063211 PCT BR2013 000411 1 IRON ORE CONCENTRATION PROCESS WITH GRINDING CIRCUIT, DRY DESLIMING AND DRY OR MIXED (DRY AND WET) CONCENTRATION This application claims priority from U.S. Patent Application No. 61 719,143, titled Specification for Iron Ore (Itabirite) Concentration Process 5 with Milling Circuit and Dry Desliming and Dry or Wet Concentration , filed.

Ore Pretreatment Process Exxon Research And

While the process of the present invention has been described in terms of preparing a feed material for a fluidized iron ore reduction process which contains below 0.2 wt. sulfur, and below 0.10 wt. phosphorus, it can be readily appreciated by those skilled in the art that the process is equally adaptable for preparing ore concentrates for.

Us2928730a Iron Ore Reduction Process Google Patents

US2928730A - Iron ore reduction process - Google Patents Iron ore reduction process Download PDF Info Publication number US2928730A. US2928730A US634282A US63428257A US2928730A US 2928730 A US2928730 A US 2928730A US 634282 A US634282 A US 634282A US 63428257 A US63428257 A US 63428257A US 2928730 A US2928730 A US 2928730A.

Us Patent For Plasma Heated Furnace For Iron Ore Pellet

Dec 03, 2012 In the present pelletizing apparatus, the induration of iron ore concentrate pellets is achieved in a tunnel furnace heated by plasma torches, wherein the generation of CO2 by the conventional iron ore pelletizing processes is reduced by using electricity powered plasma torches instead of burning natural gas, heavy oil or pulverized coal in burners, thereby reducing considerably.

Us Patent For Iron Ore Concentration Process With Grinding

Oct 25, 2013 Iron ore concentration process with grinding circuit, dry desliming and dry or mixed (dry and wet) concentration Oct 25, 2013 - VALE S.A. The present invention discloses an advantageous and effective process for the concentration of iron ores, which can be fully dry or mixed, part of the process being dry, part wet.

Microbial Reduction Of Iron Ore (patent) Doe Patents

Abstract. A process is provided for reducing iron ore by treatment with microorganisms which comprises forming an aqueous mixture of iron ore, microorganisms operable for reducing the ferric iron of the iron ore to ferrous iron, and a substrate operable as an energy source for the microbial reduction and maintaining the aqueous mixture for a period of time and under conditions operable to.

Microbial Reduction Of Iron Ore (patent) Doe Patents

A process is provided for reducing iron ore by treatment with microorganisms which comprises forming an aqueous mixture of iron ore, microorganisms operable for reducing the ferric iron of the iron ore to ferrous iron, and a substrate operable as an energy source for the microbial reduction and maintaining the aqueous mixture for a period of time and under conditions operable to effect the.

Iron Ore Sintering: Process Researchgate

Draft sintering process (Patent no. US786814). In 1902, a iron ore sintering process, but they must be reconsidered due to the rise of coke price, the unstable supply of anthracites and.

Iron Ore Pellet Production At Lkab

SWEDISH PATENT MAKES PELLETS FROM ORE During the post-war period of the 50s, there was a strong belief in the future. It was in this period of optimism that LKAB decided to begin producing pellets based on the so called sintering method. The origins of the method come from a patent taken out by A G Andersson in 1912, 1955 thus saw the.

(pdf) Iron Ore Pelletizing Process: An Overview

Oct 06, 2017 Patents about organic binders in the iron ore pelletizing process. the effects of biomass ash upon slagging during the iron-ore pelletizing process in.

Iron Ore Agglomeration Processes And Their Historical

Dec 28, 2015 Pelletizing of iron ore is a method of Swedish origin, patented in 1912 by AG Andersson (Yamaguchi et al., 2010). The process was developed in the USA in the 1940s, and the first commercial plant started operation in Babbitt, Minnesota in 1952. The first iron ore pellet plant of the grate-kiln type was established at Humboldt Mine, Michigan in.

Iron Ore Pellet Process Control Nippon Steel Corporation

Iron ore pellet process control . United States Patent 4131668 . Abstract A method for controlling an iron ore pelletizing and pellet processing operation by evaluating the results of the on-stream analysis of the apparent specific gravity or apparent density distributions of the dry and fired pellet samples which permits the operator of the.

Us Patent Application For Iron Ore Concentration

Oct 25, 2013 In one embodiment, the invention provides an iron ore concentration process with grinding circuit, dry desliming and dry concentration, wherein the process comprises the steps of a) crushing an ore b) dry grinding of the ore crushed in step a) c) dry desliming of the ore grinded in step b) and d) magnetically separating the ore deslimed in step c), resulting in a concentrate product and a.

Beneficiation Of Iron Ore United States Steel Corporation

BACKGROUND OF THE INVENTION. The beneficiation of ore, particularly iron ore, conventionally has involved the use of various combinations of process setps such as crushing, grinding or milling, concentration or separation by size or weight such as by a screen and or specific gravity, as by a hydraulic classifier, and concentration with the aid of flotation agents, as in froth flotation, or by.

Direct Reduction Of Iron: A Review On Midrex And Hyl Patents

A review on the patents published by the two companies was performed in this work and it was possible to describe the functioning of both process, the developments over the years and to distinguish the differences. Both process are based on shaft furnaces where reducing gases flow in countercurrent to iron ore pellets heating them and reducing.

Beneficiation Of Iron Ore Kennecott Corporation

Iron ore is an important mineral commodity because it is the primary source of iron, the metal most widely used by man. World production of iron ore in 1977 was estimated at 840 million tons, and an estimated 350 million tons was shipped in international trade. The United States is the world's fourth largest producer of iron ore and is a major.

New Dry Iron Ore Processing Technology Developed

May 26, 2016 Brazilian company New Steel have developed a new dry iron ore tailings process to make mining environmentally sustainable. The patent has been approved in.

The Use Of Hydrogen In The Iron And Steel Industry

Virgin iron added to dilute the tramp elements such as copper and zinc to improve final product quality • DRI – D irect R educed I ron is one of the iron products added to the scrap to increase purity • DRI is iron ore that has been reduced to iron with syngas without melting • DRI processes in U.S. generally use natural gas to reduce.

Microbial Reduction Of Iron Ore

United States Patent 4880740 . Abstract A process is provided for reducing iron ore by treatment with microorganisms which comprises forming an aqueous mixture of iron ore, microorganisms operable for reducing the ferric iron of the iron ore to ferrous iron, and a substrate operable as an energy source for the microbial reduction and.

Brazilian Company Patents Innovative Dry Iron Ore

May 06, 2016 Owned by the Lorentzen group, New Steel has just patented, in Brazil and in the United States, the creation of the first iron ore tailing processing in the world that is fully dry.

Pig Iron Manufacturing Process

Mar 20, 2017 Pig Iron Manufacturing Process. At the beginning of the use of the electric furnace, for the manufacture of calcium carbide and ferro-alloys, experimental work was conducted in it upon the production of steel from iron ore. For many years steel and wrought iron have been produced directly from ore on a small scale in the forge, crucible, and.

Method For The Production Of Mineral Wool And Iron From

Oct 11, 2011 A process is provided for reducing iron ore by treatment with microorganisms which comprises forming an aqueous mixture of iron ore, microorganisms operable for reducing the ferric iron of the iron ore to ferrous iron, and a substrate operable as an energy source for the microbial reduction and maintaining the aqueous mixture for a period of time and under conditions operable to effect the.

12 5 Iron And Steel Production

Diagram of the iron and steel industry in Figure 12.5-1. Coke production is discussed in detail in Section 12.2 of this publication, and rmation on the handling and transport of materials is found in Chapter 13. 12.5.1.1 Sinter Production - The sintering process converts fine-sized raw materials, including iron ore, coke breeze,.

Iron Ore Reduction An Overview Sciencedirect Topics

The hot potassium carbonate process has been used effectively in many ammonia, natural gas, hydrogen, direct iron ore reduction, and ethylene oxide plants for many decades (Chapel et al., 1999). German patents using hot carbonate absorption of CO 2 can be found from as early as 1904 (Kohl and Riesenfeld, 1985). In the 1950s, Benson and Field.

Pyrogenesis To Trial Iron Ore Plasma Torch Mining Magazine

Jun 15, 2020 The company, which has developed a 900-kW plasma torch for the process, has a patent registered for plasma heated furnace for iron ore pellet induration , covering a tunnel furnace heated by plasma torches, wherein the generation of CO2 by the conventional iron ore pelletizing processes is reduced by using electricity powered plasma torches .

New Patented Method Provides Completely Fossil

Sep 24, 2020 In the tests carried out, GreenIron has already reduced iron ore to 96 entirely without CO2 emissions. GreenIron currently has four patents in the PCT phase (global patents) for its zero-emission method of reducing metal oxides to pure metals. The material to be processed must initially be pelletized before insertion into the furnace.

Iron Processing Britannica

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. 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.

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