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Granulating plants for granulating molten materials, especially matte or ironmaking slag

A granulation and melting technology, applied in recycling technology and other directions, can solve problems such as excessive solidification, excessive crusting, and reduction

Active Publication Date: 2014-10-01
PAUL WURTH SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method reduces the height of the flow section injected into the spray water, which may cause problems of excessive solidification and excessive incrustination prior to quenching

Method used

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  • Granulating plants for granulating molten materials, especially matte or ironmaking slag
  • Granulating plants for granulating molten materials, especially matte or ironmaking slag
  • Granulating plants for granulating molten materials, especially matte or ironmaking slag

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0041] figure 1 with Figure 2A The granulation unit 110 is partially shown and shows the downstream part of the intermediate transfer zone 124 of the runner structure through which the granulation unit 110 is supplied with a molten material flow, such as hot molten slag or hot Molten copper matte. The channel structure is inclined toward the granulation unit 110 to ensure the formation of a gravity-guided flow. The intermediate transfer zone 124 terminates at an intermediate runner end 125 , supported for example on a casthouse floor 127 of a blast furnace. Melt is typically fed at regular intervals (e.g. during blast furnace tapping) from a source of melt (e.g. a stationary slag skimmer on the main tapping runner or a movable matte ladle) to an upstream inlet zone (not shown). shown, see FIG. 5 ), so as to be conveyed towards the intermediate runner end 125 via the intermediate conveying zone (not shown, see FIG. 5 ).

[0042] figure 1 with Figure 2A Also shown is the...

no. 2 example

[0049] image 3 and Figure 4A -E of the example shown with the figure 1 -2 Features in the embodiment that are substantially the same have matching reference numbers ("2" as the hundreds digit, ie lxy→2xy) and are not described again for the sake of brevity. Therefore, only the main difference with respect to the previous embodiment, that is, the different structure of the diversion area 230, will be described below.

[0050] Such as image 3 As can be seen in the figure, the second embodiment includes a flow diversion region 230 having a plurality of flow channel segments 252, 254, 256, 258 each having a Y-shaped plan view. Such as Figure 4D As best shown in , each Y-shaped runner segment 252, 254, 256, 258 has a trunk 261 and two branches 262, 263 to form Figure 4D Segment 254 in ) defines a bifurcation (ie, a point of demarcation into two branches) of the channel.

[0051] exist image 3 Among them, the splitter zone 230 includes a series of triple Y-shaped flow p...

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Abstract

The invention provides a granulating device for granular melt, which comprises granulating units (110 and 210) for water quenching and a flow channel structure with a transfer area which guides the melt from an inlet area (22) of at least one melt source (12 or 14') and to outlet areas (126 and 226) terminated at the granulating units (110 and 210). In the invention, the downstream outlet area comprises a plurality of outlet flow channels (128-1, 128-2, 128-3; 228-1, 228-2, 228-3) which are arranged in parallel, each outlet flow channel has a flow channel tail end (129), and the melt descends into the granulating units (110 and 210) from the flow channel tail ends (129); the flow channel structure comprises diverging areas (130 and 230) positioned between the transfer areas (124 and 224) and the outlet areas (126 and 226) so as to divide the melt flow into a plurality of streams supplied to the outlet flow channels (128-1, 128-2, 128-3; 228-1, 228-2, 228-3) respectively; and the granulating unit comprises a plurality of nozzles (144-1, 144-2, 144-3, 244-1, 244-2 and 244-3), and each nozzle is connected with one outlet flow channel to granulize a stream of melt descending from the connected outlet flow channel.

Description

technical field [0001] The present invention generally relates to the granulation of molten materials, especially finished, semi-finished or by-products of the ferrous or non-ferrous industries, such as pig iron or ironmaking slag from blast furnaces, copper matte from copper smelting furnaces or Nickel matte from nickel smelting furnaces. More specifically, the present invention relates to a granulation plant comprising a granulation unit of the type configured to inject water into a freely Granulation is achieved by rapid quenching of the molten material. Background technique [0002] A well-known class of devices having a granulation unit configured to inject water into the molten stream is the one sold by PAUL WURTH S.A. under the name "INBA TM "system" trade name. In Europe, such granulation plants are currently the most common solution for blast furnace slag treatment. Apart from the granulation unit itself, such plants usually include a dynamic dewatering unit, Use...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B5/02C21B3/06B22F9/06
CPCY02W30/50
Inventor 鲍勃·格赖弗尔丁格马克·施魏策尔托马斯·斯加尔比
Owner PAUL WURTH SA