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Recovery method of splashed molten iron

A recovery method and molten iron technology, applied in the field of ferroalloy production, can solve the problems of large loss and low recovery rate, and achieve the effects of less iron loss, high recovery rate and cost reduction

Inactive Publication Date: 2016-04-13
广西金源镍业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of large loss and low recovery rate caused by splashing of molten iron in the prior art, the purpose of the present invention is to provide a recovery method of splashed molten iron, which is simple and practical, can effectively reduce loss and improve the recovery rate of nickel At the same time, due to the timely treatment of the splashed molten iron, the treatment cost of slag and iron is reduced, which effectively reduces the cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Set an inclined steel plate or a baffle made of any fire-resistant and high-temperature-resistant material from the mouth of the pouring chute to the bottom of the casting machine ingot mold. The inclination angle of the baffle is 30°, and a water pipe is arranged above the baffle , set multiple small holes around the water pipe;

[0022] (2) When the molten iron is splashed, use the baffle to block the splashed molten iron, the molten iron is attached to the baffle, and then spray high-pressure water through the water pipe above the baffle, so that the high-pressure water passes through the surface of the baffle evenly, and the The splashed molten iron is dispersed and cooled, and finally flows into the funnel to obtain the water-quenched ferronickel. At this time, the particle size of ferronickel is 5mm-10mm;

[0023] (3) Immediately after the ferronickel flows into the funnel, it is hoisted into the high-temperature ladle by a crane, and is heated and dried by us...

Embodiment 2

[0026] (1) Set an inclined steel plate or a baffle made of any fire-resistant and high-temperature-resistant material from the mouth of the pouring chute to the bottom of the pouring machine ingot mold. The inclination angle of the baffle is 40°, and a water pipe is arranged above the baffle , set multiple small holes around the water pipe;

[0027] (2) When the molten iron is splashed, use the baffle to block the splashed molten iron, the molten iron is attached to the baffle, and then spray high-pressure water through the water pipe above the baffle, so that the high-pressure water passes through the surface of the baffle evenly, and the The splashed molten iron is dispersed and cooled, and finally flows into the funnel to obtain the water-quenched ferronickel. At this time, the particle size of ferronickel is 5mm-10mm;

[0028] (3) Immediately after the ferronickel flows into the funnel, it is hoisted into the high-temperature ladle by a crane, and is heated and dried by us...

Embodiment 3

[0031] (1) Set an inclined steel plate or a baffle made of any fire-resistant and high-temperature-resistant material from the mouth of the pouring chute to the bottom of the casting machine ingot mold. The inclination angle of the baffle is 50°, and a water pipe is arranged above the baffle , set multiple small holes around the water pipe;

[0032] (2) When the molten iron is splashed, use the baffle to block the splashed molten iron, the molten iron is attached to the baffle, and then spray high-pressure water through the water pipe above the baffle, so that the high-pressure water passes through the surface of the baffle evenly, and the The splashed molten iron is dispersed and cooled, and finally flows into the funnel to obtain the water-quenched ferronickel. At this time, the particle size of ferronickel is 5mm-10mm;

[0033] (3) Immediately after the ferronickel flows into the funnel, it is hoisted into the high-temperature ladle by a crane, and is heated and dried by us...

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Abstract

The invention belongs to the field of ferroalloy production, and particularly relates to a recovery method of splashed molten iron. According to the recovery method disclosed by the invention, an inclined baffle is arranged at a position from a casting chute opening to a position under an ingot mould of a casting machine, the inclined angle of the baffle is 30-50 degrees, and a water pipe is arranged above the baffle; a plurality of holes are formed in the periphery of the water pipe; when the molten iron is splashed during being casted and shaped, the baffle is used for blocking the splashed molten iron, the molten iron is adhered on the baffle, and then the water pipe above the baffle sprays high pressure water; the high pressure water uniformly flows through the surface of the baffle, so as to break up and cool the splashed molten iron; finally, the high pressure water flows in a funnel, so that ferronickel quenched with the water is obtained. The method is simple and practical, can effectively reduce consumption, and increase the recovery rate of nickel; besides, the splashed molten iron is timely treated, so that the treatment cost of iron slags is reduced, and the cost is effectively reduced.

Description

technical field [0001] The invention belongs to the field of ferroalloy production, in particular to a method for recovering splashed molten iron. Background technique [0002] Nickel is an important non-ferrous metal alloy element, mainly used for smelting stainless steel, and is one of the most demanded elements in stainless steel production enterprises. Usually nickel-based stainless steel production needs to add 8wt-11wt% nickel. With the development of my country's stainless steel industry With the development, the demand for nickel is also increasing day by day, but the nickel resource mines that can be developed and utilized by human beings are limited to nickel sulfide ore and laterite nickel ore, of which 30% are nickel sulfide ore and 70% are laterite nickel ore. [0003] At present, the common methods of producing ferronickel from laterite nickel ore include fire method, wet method and fire-wet combination method. Among them, the RKEF (rotary kiln-electric furnace...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D7/12
CPCB22D7/12
Inventor 王东升师栋召王文许世强陈兵
Owner 广西金源镍业有限公司
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