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Method for utilizing nickel flash smelting water-quenched slag

A technology of flash smelting and water quenching slag is applied in the field of manufacturing sinter, which can solve the problems of high production cost, complicated process and uneconomical cost, and achieve the effect of low production and processing cost, simple process and simplified production process.

Inactive Publication Date: 2013-05-22
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is technically feasible to adopt the above-mentioned technical scheme, but the process is complex and the production cost is too high, which is uneconomical and uneconomical

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The specific steps of the utilization method of the nickel flash smelting water quenching slag of the present embodiment are as follows:

[0051] (1) High pressure roller mill preprocessing

[0052] Nickel flash smelting water-quenched slag is pre-processed by high-pressure roller mill, and its proportion of -0.074mm is 47%;

[0053] (2) Ingredients:

[0054] The nickel flash smelting water-quenched slag preprocessed by the high-pressure roller mill is mixed with iron ore powder, blast furnace return powder, other fluxes and fuels according to the following weight percentages:

[0055] 7 parts of nickel flash smelting water quenching slag; 24 parts of Australian ore powder;

[0056] 30 parts of ore powder in Dai County, Shanxi; 13 parts of blast furnace return ore powder;

[0057] 5 parts of limestone; 7 parts of dolomite powder;

[0058] 8 parts of white ash; 6 parts of coke powder.

[0059] The chemical composition and particle size composition of the nickel flas...

Embodiment 2

[0067] In this embodiment, the nickel flash smelting water-quenching slag is further rolled to a finer particle size, and the proportion of solid fuel coke powder is appropriately reduced. The specific steps are as follows:

[0068] (1) High pressure roller mill preprocessing

[0069]Nickel flash smelting water-quenched slag is pretreated by high-pressure roller mill, and its proportion of -0.074mm is 57%;

[0070] (2) Ingredients:

[0071] The nickel flash smelting water-quenched slag preprocessed by the high-pressure roller mill is mixed with iron ore powder, blast furnace return powder, other fluxes and fuels according to the following weight percentages:

[0072] 7 parts of nickel flash smelting water quenching slag; 24.3 parts of Australian ore powder;

[0073] 30 parts of ore powder in Dai County, Shanxi; 13 parts of blast furnace return ore powder;

[0074] 5 parts of limestone; 7 parts of dolomite powder;

[0075] 8 parts of white ash; 5.7 parts of coke powder.

...

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Abstract

The invention relates to a method for utilizing nickel flash smelting water-quenched slag. The method comprises the following steps of: sequentially preparing materials, mixing and sintering, and is characterized by the following steps: performing high-pressure rolling preprocessing on the nickel flash smelting water-quenched slag, preparing and mixing with other sintering feed, sintering and producing sintered ore. The method is characterized by comprising the following steps: I, performing high-pressure rolling preprocessing on the nickel flash smelting water-quenched slag, so that the ratio of -0.074mm is over 40 percent; II, the specific formula during material preparation comprises 5-15 parts of nickel flash smelting water-quenched slag, 10-40 parts of Australia ore powder, 10-40 parts of Shanxi Daixian ore powder, 10-20 parts of blast furnace ore return powder, 2-6 parts of limestone flour, 5-10 parts of dolomite dust, 3-9 parts of lime and 4-10 parts of coke powder; III, uniformly mixing through a two-section mixer, adding water, thus obtaining a mixture; and IV sintering. According to the sintered ore manufactured by the method, the nickel flash smelting water-quenched slag can be highly efficiently utilized.

Description

[0001] technical field [0002] The invention relates to a method for utilizing nickel flash smelting water-quenching slag, in particular to a method for using nickel flash smelting water-quenching slag as a raw material for sintering ore containing nickel and iron to produce sintering ore. Background technique [0003] Domestic nickel flash smelting water-quenching slag contains about 40% Fe and 0.45% NiO, and the content of MgO is as high as about 8%, but it has not been used reasonably for many years, and the accumulated stockpiles have reached tens of millions of tons. If so much nickel slag is piled up arbitrarily without treatment, it will not only occupy a large amount of land, but also cause environmental pollution. Therefore, it is necessary to comprehensively utilize and treat nickel slag. In recent years, with the price increase of iron ore powder (and nickel-containing alloy) at home and abroad, making full use of valuable element resources has gradually become a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/16C22B7/04C22B23/00
CPCY02P10/20
Inventor 范建军蔡湄夏贺淑珍张华赵建伟
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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