Molten ferroalloy granulating method

A ferroalloy and granulation technology, which is applied in the field of ferroalloy melt granulation, can solve the problems of low dehydration efficiency and large floor space, and achieve the effects of no dust adhesion, small floor space, and favorable metering and batching effects

Active Publication Date: 2014-06-18
唐山市嘉恒实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device occupies a large area and has low dehydration efficiency

Method used

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  • Molten ferroalloy granulating method
  • Molten ferroalloy granulating method
  • Molten ferroalloy granulating method

Examples

Experimental program
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Effect test

Embodiment 1

[0026] see figure 1 , the ferroalloy melt granulation method of the present invention adopts a granulation and packaging unit to produce ferroalloy fine particles, collects ferroalloy melt at 1600°C-1630°C into a molten iron tank, and transports the molten iron tank to a dumping tank through transport equipment. on the turning device; the transport equipment belongs to the prior art;

[0027] Start the tipping device to inject the ferroalloy melt into an intermediate ladle through the molten iron chute, and the bottom outlet of the intermediate ladle arranges the ferroalloy melt into a stable columnar melt flow, and the columnar ladle The flow rate of the liquid flow is 1500 kg-1600 kg per minute; the diameter of the columnar melt flow is 30 mm-45 mm, and the length (height) of the columnar melt flow is 1000-2000 mm;

[0028] Controlling the columnar melt flow to fall vertically onto a horizontal granulation disk in a granulation treatment device, and performing sputtering gr...

Embodiment 2

[0035] This embodiment is an improvement made on the basis of Embodiment 1. For the same content in this embodiment as Embodiment 1, please refer to the content disclosed in Embodiment 1 for understanding, and no repeated description is made here; the disclosure in Embodiment 1 The content should also be taken as the content disclosed in this embodiment.

[0036] In this embodiment, in order to improve the granulation effect of the ferroalloy melt, a vertical baffle is set in the rectification and separation box, and a plurality of broken pile heads are set on the baffle, and the broken pile heads combine the solid, liquid, and Ferroalloy fine particles larger than 5 mm in the air-gas mixture fluid undergo secondary crushing. Larger particles are further crushed when they impact the crushed pile head at high speed. The structure of the broken pile head is a nipple-shaped pile head protruding from the surface of the baffle plate, and its diameter is 5-15 mm.

[0037] In this ...

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Abstract

The invention relates to a molten ferroalloy granulating method. According to the method, a granulating packaging combined device is used for producing ferroalloy fine particles. Column-shaped melt flow of 1600 DEG C to 1630 DEG C vertically falls on a horizontal granulating plate and forms the ferroalloy fine particles through water quenching, the particle size of the ferroalloy fine particles ranges from 2 mm to 50 mm, dewatering is carried out by vibrating a dewatering screen, and the ferroalloy particles are dried through a rotary dryer and conveyed into a packaging machine through a belt conveyer for packaging. The molten ferroalloy granulating method is high in automation degree, short in flow path, small in occupied area, small in ferroalloy particle size and high in uniformity.

Description

technical field [0001] The invention relates to a method for granulating ferroalloy molten liquid, and relates to the technical field of molten iron granulation. The method adopts a granulation and packaging unit to produce ferroalloy fine particles, and undergoes water quenching to form ferroalloy fine particles. The particle size of the ferroalloy fine particles is 2-50mm. Background technique [0002] In the prior art, the method of processing molten iron in ironmaking is water quenching and granulation. Chinese patent 94111807.X discloses a method and device for producing uniform granular iron. The main process is molten iron pretreatment to optimize the quality of molten iron—gate control Molten iron—roller for granulation of molten iron—cooling of granulated molten iron—separation and sieving of water and granular iron—drying—storage. This patent overcomes the shortcomings of uneven particle size caused by water quenching granulation due to changes in molten iron temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08
Inventor 张维田周旗刘健阚学飞任小芬孙健
Owner 唐山市嘉恒实业有限公司
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