patent of iron ore process

OUR PRODUCTS

Our Services

PE Jaw Crusher

PE series jaw crusher is usually used as primary crusher in quarry production lines, mineral ore crushing plants and powder making plants. It can be described as obbligato machine in mining, building construction,…

Our Services

HJ Series Jaw Crusher

By analyzing customers’ requirements and absorbing the world-class advanced technology, GM developed the HJ series jaw crusher. This machine has larger capacity but the energy consumption is quite low.…

Our Services

VSI Crusher

GM VSI Series vertical shaft impact crusher is designed by reputed German expert of GM and every index is in world’s leading standard. It incorporates three crushing types and it can be operated 720…

Our Services

PF Impact Crusher

By absorbing the advanced technology from the world, we researched and designed PF series impact crusher. It can be used to deal with materials whose size below 500mm and whose compression strength less…

Our Services

HST Cone Crusher

HST series single cylinder cone crusher with hydraulic-driven system is a kind of new type high efficient crushing equipment which is developed by our engineers through over 20 year's effort of design,…

Our Services

Mobile Cone Crusher

The Mobile Cone Crusher (plants) has excellent mobility, it can move to anywhere with the change of raw material places or the construction places and start to work without building any foundation. Also…

Our Services

Ball Mill

Ball mills are used primary for single stage fine grinding, regrinding, and as the second stage in two stage grinding circuits. According to the need of customers, ball mill can be either wet or dry designs.…

Our Services

LM Vertical Grinding Mills

According to customers’ requirements, GM success in absorbing foreign experience and world-advanced technology, and in producing our vertical products, with self-owned intellectual property right. Now…

Our Services

MTW Milling Machine

This MTW series milling machine is designed by our experts, according to collected advices from customers’ long-term experiences. It takes the most advanced patent technology from European and the supply…

Relation Solutions

Iron Ore Agglomeration Technologies

Sintering is a thermal process (1300 1400 C) by which a mixture of iron ore, return fines, recycled products of the iron and steel industry (mill scale, blast furnace dusts, etc.), slag- forming elements, fluxes and coke are agglomerated in a sinter plant with the purpose of

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

Henry Bessemer and the Production of Steel

Apr 13, 2017· The First System for Manufacturing Steel. An American, William Kelly, initially held a patent for "a system of air blowing the carbon out of pig iron," a method of steel production known as the pneumatic process. Air was blown through molten pig iron to oxidize and remove unwanted impurities. This was Bessemer's starting point.

US2928730A

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

Metallurgic Processes

The HIsarna steelmaking process is a process of primary steelmaking in which iron ore is processed almost directly into steel. The process is based on a new type of blast furnace called a Cyclone Converter Furnace, which makes it possible to skip the process of manufacturing pig iron pellets, a necessary step in the basic oxygen steelmaking

iron processing

iron processing - iron processing - Ores: Iron ores occur in igneous, metamorphic (transformed), or sedimentary rocks in a variety of geologic environments. Most are sedimentary, but many have been changed by weathering, and so their precise origin is difficult to determine. The most widely distributed iron-bearing minerals are oxides, and iron ores consist mainly of hematite (Fe2O3), which is

Iron and steel industry process model (Technical Report

The iron and steel industry process model depicts expected energy-consumption characteristics of the iron and steel industry and ancillary industries for the next 25 years by means of a process model of the major steps in steelmaking, from ore mining and scrap recycling to the final finishing of

Joaquim Donizetti DONDA Inventions, Patents and Patent

Jul 31, 2019· Abstract: This invention relates to a process of comminution of iron ore or iron ore products (pellet feed, sinter feed, etc.) at natural moisture without the need to add water or to include a drying step in the process, that is technically and economically feasible. The comminution process of this invention uses at least one piece of equipment selected from the group consisting of roller

How did the Kelly-Bessemer process help make iron and

Mar 28, 2012· It mixed impurities in the iron ore enough to eliminate the problem of weakening. The process is named after its inventor, Henry Bessemer, who took out a patent on the process in 1855.

‪Ammasi Ayyandurai‬

Cited by. Year. A Process for the Preparation of Iron Oxide Pellets Using Sodium Lignosulphonate Containing Materials and Copper Smelting Slag. A Ammasi, J Pal. IN Patent App. 1446/DEL/2,015., 2015. 2015. A process for the production of highly metallized DRI from mill scale & lean grade non-coking coal in tunnel kiln.

Minas-Rio Iron Ore Project, Rio de Janeiro, Brazil

The Minas-Rio iron ore mining project is situated in the states of Minas Gerais and Rio de Janeiro in the south-eastern region of Brazil. It is 100% owned by Anglo American through its subsidiary, Iron Ore Brazil. The mine's development has been underway since 2009 after Anglo had bought it from MMX in 2008 for $4.6bn. The project has an

Processes for phosphorus removal from iron ore

( United States Patent, USA). patented a process consisting of the mixture of chlorides of alkali metals (sodium, lithium, calcium, magnesium, strontium and barium) with ammonium chlorides, manganese, zirconium and copper in ore in a proportion of 10% by weight. The mixture of ore and additives is calcined at a temperature of 900ºC for 120

The Six Main Steps of Iron Ore Processing

Mar 14, 2018· When the iron ore is extracted from the mine, it must undergo several processing stages. Six steps to process iron ore. 1. Screening. We recommend that you begin by screening the iron ore to separate fine particles below the crusher's CSS before the crushing stage. A static screen is used to divert the fine particles for crushing.

building an ore processing flow sheet

Dec 13, 2018· Dec 13, 2018· building an ore processing flowsheet - bierzelt-2011.de. ore beneficiation process flowsheet 」 Basic Beneficiation Flowsheet For Iron Ore. Patent us4192738process for scavenging iron from tailings mar 11, 1980 2,352,324 to hubler which discloses an ore beneficiation process which uses a 2 depicts a flow sheet using multistage wet highintensity magnetic whim .

MIDREX® — THE LEADING DRI PRODUCTION PROCESS

MIDREX is an innovative ironmaking process that has been specifically developed to produce direct-reduced iron from iron ores and natural gas/hydrogen. MIDREX is a gas-based shaft furnace process that converts iron oxides - in the form of pellets or lump ore - into direct-reduced iron (DRI). MIDREX technology is highly customizable, which means

WO2014063211A1

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, such enhancing the process efficiency as a whole by increasing recovery of concentrators and .

HYBRIT Produces Sponge Iron Using Fossil-Free Hydrogen Gas

Sep 06, 2021· The reduction process involves removing the oxygen from the iron ore, which is a prerequisite for steel production. Typically, this is done using carbon or coke, whereas HYBRIT used fossil-free hydrogen gas to carry out the process. The hydrogen used in the process is produced by the electrolysis of water with fossil-free electricity that is

Breakthrough: MRPL receives patent for process distillation

Oct 08, 2020· New Delhi: ONGC's subsidiary company Mangalore Refinery and Petrochemicals Limited (MRPL) has been awarded a patent on process distillation of petroleum fractions by making use of fuel gas-hydrocarbon vapours instead of steam. The certificate was awarded on October 1 by the patent office of the Central government, a press release issued by the

Iron Ore Pelletizing Process: An Overview

Jul 11, 2018· Jul 11, 2018· The iron ore production has significantly expanded in recent years, owing to increasing steel demands in developing countries. However, the content of iron in ore deposits has deteriorated and low-grade iron ore has been processed. The fines resulting from the concentration process must be agglomerated for use in iron and steelmaking. This chapter shows the status of the pelletizing process

No. 523: Edison's Big Failure

Edison had to invent means for binding the iron into briquettes. It all seemed to come together by 1898. The process was working. He'd cut his costs from $7 a ton to $4.75. Then the great Mesabi iron range opened in Northern Minnesota. Suddenly iron cost only $3 a ton.

Kelly Pneumatic Iron Process

manufacture iron, a final challenge remained: securing the legal rights to proceed. In Great Britain, Bessemer held the patent for a pneumatic process that could not deliver consistent quality, and Kelly held essentially the same patent in the U.S. Mushet held a patent in both countries for making iron of consistent quality, but his process

Smelting iron ore in a microwave

Jul 08, 2009· Instead I found a 2001 patent about industrial smelting of Iron ores using microwave energy. Microwaves, as we all know, are just so much more convenient — and so I tried to replicate the industrial process outlined in the patent using a domestic microwave. After some not-so-careful experimentation which necessitated another microwave

iron ore concentrates process

method for processing iron ore concentrat method for processing iron ore concentrates Home / method for processing iron ore concentrates US Patent # RE29,598 Method for recovering vanadium,, It is the object of this invention to provide an improved method for extracting vanadiumvalues from vanadiumbearing iron ores and/or iron ore concentrates, which method does not introduce,...

Nov. 11, 1856: Bessemer Becomes the Man of Steel

Nov 11, 2010· The first Bessemer steel mill in the United States opened outside Detroit in 1855, a year before the U.S. patent was issued. As a Great Lakes port city, and given its proximity to the fertile iron

William Kelly

William Kelly, (born Aug. 21, 1811, Pittsburgh, Pa., U.S.—died Feb. 11, 1888, Louisville, Ky.), American ironmaster who invented the pneumatic process of steelmaking, in which air is blown through molten pig iron to oxidize and remove unwanted impurities. Also patented by Sir Henry Bessemer of Great Britain, this process produced the first inexpensive steel, which became the major

PyroGenesis Announces Request for Cost Estimate from Major

Jun 03, 2021· As previously disclosed, PyroGenesis has the process patent to replace fossil fuel burners with PyroGenesis' clean plasma torches in the iron ore .

Roasting Iron-Stone

Teague's Patent Roasting Furnaces. - Mr. Teague, of the Park End Iron Works, near Calford, in Gloucestershire, took out a patent in 1832, for improvements in smelting, in which he proposes to economise the process of roasting the ore, both as respects the labour and the fuel. Instead of making the calcination a distinct process, conducted in

William Kelly (inventor)

William Kelly (August 21, 1811 – February 11, 1888), born in Pittsburgh, Pennsylvania, was an American inventor.He is credited with being one of the inventors of modern steel production, through the process of injecting air into molten iron, which he experimented with in the early 1850s. A similar process was discovered independently by Henry Bessemer and patented in 1855.

Iron Ore Reduction

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

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

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 .

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 more information 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,

Glossary of Mining Terms

Autogenous grinding - The process of grinding ore in a rotating cylinder using large pieces of the ore instead of conventional steel balls or rods. B. Patent - The ultimate stage of holding a mineral claim, Sinter - Fine particles of iron ore that have been treated by heat to produce blast furnace feed.

Scandinavian iron ore mining and the British steel

Dec 20, 2011· Scandinavian iron ore mining and the British steel industry 1870–1914 References; Citations Metrics; Although in Bessemer's patent, only wrought iron was specified as the object of the new process, it was recognized that the real value of the process lay in its applicability to the conversion of pig iron into: steel in a single short

Detection of the assimilation characteristics of iron ores

Jan 14, 2020· Resistance in iron ore undergoes a sharp change of up to several orders of magnitude when the sintered solid phase changes to liquid phase. In view of the insufficiency of existing assimilation detection methods, a timing-of-assimilation reaction is proposed, which was judged by continuously detecting the changes in resistance at the reaction interface. Effects of pole position and additional

Direct extraction of nickel and iron from laterite ores

Dec 01, 2013· The carbonyl method of refining nickel and iron was invented more than 100 years ago and has been used for refining of nickel commercially.CVMR® developed the process of direct extraction of nickel and iron from laterite ores as metal carbonyls which in turn produced pure nickel and iron .