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A forehearth

A technology of forehearth and hearth, applied in the field of continuous production of molten materials, can solve problems such as production loss

Inactive Publication Date: 2011-04-13
TECH RESOURCES PTY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In these cases, blockage of the forehearth connection would require vessel shutdown, thereby resulting in lost production, and is therefore undesirable

Method used

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  • A forehearth
  • A forehearth
  • A forehearth

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Embodiment Construction

[0048] An embodiment of a forehearth and a direct smelting vessel comprising a forehearth according to the invention shown in the drawings is described in the context of the production of molten iron from metal-bearing feedstocks such as iron ore fines in a molten bath based direct smelting process the embodiment. These processes can be run under pressure and can be performed in sealed pressure vessels. For example, a process known as the Hismelt direct smelting process, which has been developed by the applicant, operates at typically 0.8 bar gauge (1.8 bar atmospheric pressure).

[0049] It should be noted that the invention is not limited to the production of molten iron.

[0050] It should also be noted that the forehearth is not limited to use in the production of molten iron, but can be used as part of a metallurgical vessel for the production of other metals and alloys.

[0051] The container is generally identified by reference numeral 3 .

[0052] Vessel 3 comprises: ...

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Abstract

A forehearth (5) for containing a volume of molten material and a direct smelting vessel (3) that includes the forehearth are disclosed. The forehearth includes a forehearth connection (15) for connecting the foreheath with a smelting chamber (4) of a smelting vessel (8) so that molten material can flow from the smelting chamber into the forehearth. The forehearth connection is formed so that there is an unrestricted line of sight through the forehearth connection from a location that is external to the forehearth. This makes it possible to unblock the forehearth connection by a mechanical drill or other equipment extending into the forehearth connection and operated externally of the forehearth.

Description

technical field [0001] The present invention relates to the continuous production of molten materials. [0002] The present invention is particularly, but by no means exclusively, concerned with the continuous production of molten iron using metal-containing feedstock via a bath-based direct smelting process carried out in a vessel including a forehearth enabling continuous flow of molten iron from the vessel. [0003] The invention also relates to a direct smelting vessel comprising a forehearth. Background technique [0004] While continuous production of molten iron from a direct smelting vessel via a forehearth has many advantages over batch production of molten iron from a vessel, there are limitations associated with providing much quantity to an open connection between the interior of the direct smelting vessel and the exterior of the vessel. Security Risk. In particular, there is a risk that pressure fluctuations in the vessel lead to an unintended gush of molten i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B13/10
CPCF27B3/04F27D21/02C21C5/567F27B3/19C21B11/08C21B13/10C21C5/04C21C5/46
Inventor 马克·哈顿
Owner TECH RESOURCES PTY LTD