Übersetzung für "Lump ore" in Deutsch

All four use lump ore or pellets as the basic substance.

The reducing gas 21 is fed in counterflow to the lump ore etc. 20 .

Apart from lump ore, it is known to use substances containing fine particle iron ore in the production of blast furnace feedstock.

Before him a mighty anvil was placed, on which lay a big lump of ore.

Ore from Channar, like that from Brockman, Mount Tom Price, Paraburdoo, Eastern Range, Marandoo and Yandicoogina, is transported as lump and fines ore product from the mines to Dampier via rail.

The German Disclosure Publication No. 30 34 539 describes a process for the direct production of liquid crude iron from lump ore which is reduced to iron sponge in a direct reduction shaft furnace in the form of a loose charge by means of a hot reduction gas and is then supplied in hot condition to a melting gasifier through a discharge device.

A process for the direct production of sponge iron particles and liquid pig iron from lump iron ore is described, in which the iron ore is reduced as a loose bed in a direct reduction unit by means of hot reducing gases to sponge iron and is subsequently melted in a melting gasifier by means of the introduced carbon and blown in oxygen-containing gas, accompanied by the production of reducing gas.

Fine ore can now also be briquetted thanks to the present invention by virtue of this control concept which has so far only been known in the case of lump ore and pellets.

The compaction of sponge iron into briquette strips is generally only known in the processing of lump ore and/or pellets.

German Patent No. 30 34 539 discloses a process for directly producing molten pig iron from lump iron ore, which is reduced in a direct reduction shaft furnace to sponge iron by means of a reducing gas and is then melted in a melt-down gasifier with the aid of coal and oxygen-containing gas and simultaneously the producer gas used for reducing the iron ore is produced.

The invention relates to a process for producing sponge iron particles and molten pig iron from lump iron ore, in which the iron ore is reduced in a direct reduction unit by means of reducing gas to sponge iron and the sponge iron particles discharged from the direct reduction unit are separated into a fine particle fraction and a coarse particle fraction, whereby the fine particle fraction is fed to a melt-down gasifier, in which from introduced coal and blown-in oxygen-containing gas is produced the heat necessary for melting the fine particle fraction of the sponge iron, together with reducing gas, whereof at least part is introduced into the direct reduction unit.

From above lump iron ore is fed to the shaft furnace 2, as indicated by arrow 19 and drops in the form of a loosely packed bed into said furnace and is reduced to sponge iron by means of a hot reducing gas at a temperature of approximately 750° to 900° C. blown in via a gas inlet 20.

Iron ore is the natural raw material of the steel industry, and is primarily sourced from overseas in the form of ore fines, lump ore and pellets.

The iron ore is mixed as lump ore, pellets or sinter together with the reducing agent (mostly coke, or also coal, e.g. in the form of a fine coal injection plant) and further components (limestone, slag formers, etc.) with the so-called burdens and subsequently charged into the blast furnace.

The directly reduced iron is manufactured from pellets and/or lump ore, with the direct reduction being performed using gas.

In the case of smelting-reduction, a melter gasifier is used in which hot liquid metal is produced, and at least one reducing reactor in which the carrier of the iron ore (lump ore, fine ore, pellets, sinter) is reduced with reducing gas which is generated in the melter gasifier by the gasification of coal (and possibly also a small content of coke) with oxygen (90% or more).

In a direct reduction plant, iron ore-bearing substances in lump form (lump ore, fine ore or pellets (fine-grained iron ore is rolled into green pellets with water, binding agents and additives and hardened in a subsequent firing process)) are reduced in the solid state at 750° C. to 1000° C. by means of reducing gas or coal.

The iron ore is mixed as lump ore, pellets or sinter with the reducing agents (mostly coke or coal, e.g. in the form of a fine coal infeed system) and other constituents (limestone, slag flux, etc.) to form the “charge” and is then fed into the blast furnace.

The product gas 31 is partially oxidized, possibly with oxygen O 2, in the reducing gas furnace 43 and is subsequently fed into the reduction shaft 18 of the direct reduction plant 33 where the lump ore and/or the pellets 45 supplied from above are fed in.

Exact quantities of burdening materials such as sinter, pellets, lump ore, minimal quantities of alloys, and coke are transported alternately via a belt conveyor to the blast furnace head.