CN103114198A - Method for utilizing nickel flash smelting water-quenched slag - Google Patents
Method for utilizing nickel flash smelting water-quenched slag Download PDFInfo
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- CN103114198A CN103114198A CN201310012545XA CN201310012545A CN103114198A CN 103114198 A CN103114198 A CN 103114198A CN 201310012545X A CN201310012545X A CN 201310012545XA CN 201310012545 A CN201310012545 A CN 201310012545A CN 103114198 A CN103114198 A CN 103114198A
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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
Technical field
The present invention relates to a kind of method of utilizing of nickel flash smelting Water Quenching Slag, is specifically a kind of method of agglomerate that the nickel flash smelting Water Quenching Slag is made as the agglomerate raw material of nickeliferous and iron.
Background technology
Domestic nickel flash smelting Water Quenching Slag contains the Fe of 40% left and right and 0.45% NiO, the content of MgO is also up to 8% left and right, but never reasonably used for many years, the accumulative total volume of cargo in storage has reached up to ten million tons at present, if not adding, do not administer and stacking arbitrarily so many nickel slag, not only can take a large amount of soils, and can cause environmental pollution, therefore be necessary the nickel slag is fully utilized and administers.Along with the rise of domestic and international powdered iron ore (and nickel-containing alloys) price, taking full advantage of the valuable element resource becomes new development trend gradually in recent years.If the iron charge of this nickel flash smelting Water Quenching Slag as sintering circuit in ferrous metallurgy production directly used, result shows, after part nickel flash smelting Water Quenching Slag, the sinter quality variation shows as that sintered ore rotary drum strength descends, solid fuel consumption raises.After through studies show that, because the iron in this nickel flash smelting Water Quenching Slag is mainly the hortonolite phase mutually, and this smelting slag is that the high-temperature liquid state slag forms through shrend, crystal grain is grown imperfect, therefore its high-temperature reactivity is poor, under the sintering temperature of sintering 1200-1300 ℃, be difficult to react with other powdered iron ore, flux etc., therefore directly with addition of rear, quality to agglomerate is brought negative impact, therefore, directly uses as sintered material, the quality of agglomerate is brought very large negative impact, and when directly using, economy is too poor.
At present, about the research and utilization of nickel flash smelting Water Quenching Slag, be mainly to concentrate on preliminary election enrichment-direct-reduction-magnetic separation process.At first adopt the methods such as gravity treatment or high intensity magnetic separation to carry out sorting in advance to the nickel slag, abandon the part mine tailing, after making Fe enrichment relative to Ni, more first will reduce under hortonolite, fayalite high temperature in the mode of direct-reduction, with magnetic method, Fe, the Ni that restores separated again, be used.Adopt technique scheme, technical is feasible, but complex process, production cost is too high, and is uneconomical, also uneconomical.
Therefore develop and a kind ofly can adopt relatively simple production technique to utilize the method for nickel flash smelting Water Quenching Slag, significant.
Summary of the invention
In order to overcome the above-mentioned deficiency of the using method that has the nickel flash smelting Water Quenching Slag now, the invention provides a kind of method of utilizing of nickel flash smelting Water Quenching Slag, present method is used the agglomerate raw material of nickel flash smelting Water Quenching Slag as nickeliferous and iron, the agglomerate of its manufacturing neither reduces the quality of agglomerate, has also reclaimed simultaneously iron and nickel valuable element in the nickel flash smelting Water Quenching Slag.
The method of utilizing of this nickel flash smelting Water Quenching Slag comprises following batching, batch mixing and sintering successively, it is characterized in that: before batching, first the nickel flash smelting Water Quenching Slag is passed through the high pressure roller mill preprocessing in advance, and then prepare burden, mix with other sintered material, carry out sintering, produce agglomerate.
The steps characteristic of utilizing method of this nickel flash smelting Water Quenching Slag is:
(1) high pressure roller mill preprocessing
The nickel flash smelting Water Quenching Slag is through the high pressure roller mill preprocessing, make-ratio of 0.074mm reaches more than 40%;
(2) batching
Nickel flash smelting Water Quenching Slag after the high pressure roller mill preprocessing and powdered iron ore, blast furnace returning charge powder, other flux and fuel are prepared burden to scale, and concrete proportioning is:
Nickel flash smelting Water Quenching Slag 5-15 part
Australia breeze 10-40 part
10 ~ 40 parts of Shanxi Dai County breezes
10 ~ 20 parts, BF return fines powder
2 ~ 6 parts of limestone powders
5 ~ 10 parts of ground dolomites
3 ~ 9 parts of limes
4 ~ 10 parts of coke powders.
(3) mix
Above-mentioned compound and through two sections mixer mixings, Jia Shui, obtains compound after the batching mixing;
(4) sintering:
To mix pellet and carry out cloth, sintering on agglomerating plant, obtain the finished product agglomerate.
During sintering, sintering process parameter adjusts accordingly according to need of production.
This nickel flash smelting Water Quenching Slag utilize method, because the nickel flash smelting Water Quenching Slag shifts to an earlier date through the high pressure roller mill preprocessing, change has occured in its crystalline-granular texture, improved its high temperature reactivity, can be under the sintering temperature of sintering 1200-1300 ℃, be easy to and reaction fully occurs for other powdered iron ore, flux etc., avoided directly the nickel flash smelting Water Quenching Slag when carrying out sintering to sinter mixture, the negative impact that sinter quality is brought.
Beneficial effect of the present invention: (1) is by carrying out the high pressure roller mill preprocessing to the nickel flash smelting Water Quenching Slag, improved the high temperature reactivity of nickel slag, solve the negative impact that the nickel flash smelting Water Quenching Slag is directly brought sinter quality when producing agglomerate in sintered material, do not reduced sinter quality; (2) compare with preliminary election enrichment-direct-reduction-processing nickel flash smelting Water Quenching Slag techniques such as magnetic separation process, the high pressure roller mill preprocessing has that technique is simple, the process for processing low cost and other advantages.(3) use the production technique of simplifying, realized the efficient utilization to the nickel flash smelting Water Quenching Slag.
Embodiment
Further illustrate the specific embodiment of the present invention below by embodiment, but the specific embodiment of the present invention is not limited to following examples.
Paper benchmark example, benchmark example are directly to produce the common process of agglomerate with addition of the nickel flash smelting Water Quenching Slag.
Benchmark embodiment
The benchmark example is directly with the nickel flash smelting Water Quenching Slag, and other powdered iron ore, flux, fuel are produced agglomerate after batching, mixing.The concrete steps that the present embodiment is produced agglomerate with addition of the nickel flash smelting Water Quenching Slag are as follows:
(1) batching:
Nickel flash smelting Water Quenching Slag and other powder of returning mine, flux, fuel are prepared burden by following weight percent:
7 parts of nickel flash smelting Water Quenching Slag; 24 parts of Australia's breezes; 30 parts of Shanxi Dai County breezes;
13 parts, BF return fines powder; 5 parts, Wingdale; 7 parts of ground dolomites;
8 parts of limes, 6 parts of coke powders.
Wherein the chemical composition of nickel flash smelting Water Quenching Slag sees Table 1:
The chemical composition (w/%) of table 1 nickel flash smelting Water Quenching Slag
| Composition | TFe | SiO 2 | Al 2O 3 | CaO | MgO | NiO | S | P | Scaling loss |
| Content | 41.24 | 31.35 | 3.41 | 3.24 | 7.45 | 0.45 | 0.76 | 0.035 | 0.08 |
The size composition of nickel flash smelting Water Quenching Slag sees Table 2:
Size composition/the % of table 2 nickel flash smelting Water Quenching Slag
| Size range/mm | ﹥5 | 5~3 | 3~2 | 2~1m | 1~0.5 | ﹤0.5 |
| Content | 9.34 | 27.34 | 22.77 | 9.44 | 15.37 | 15.74 |
(2) mix:
Above-mentioned compound and through two sections mixer mixings, Jia Shui, obtains compound after the batching mixing;
(3) sintering:
Through cloth, agglomerating plant sintering, the treated finished product agglomerate that obtains, its finished product agglomerate dual alkalinity 2.0, barrate strength is 68.5%(ISO), 900 ℃ of reduction degrees 68.8%.
But the present embodiment batch production, each component weight sum is 100kg.
The below introduces embodiments of the invention, and embodiment first carries out the high pressure roller mill preprocessing with the nickel flash smelting Water Quenching Slag, then with other sintered material batching, mixing, carries out sintering.
Embodiment 1
The concrete steps of utilizing method of the present embodiment nickel flash smelting Water Quenching Slag are as follows:
(1) high pressure roller mill preprocessing
The nickel flash smelting Water Quenching Slag is through the high pressure roller mill preprocessing, its-ratio of 0.074mm is 47%;
(2) batching:
Nickel flash smelting Water Quenching Slag after the high pressure roller mill preprocessing and powdered iron ore, blast furnace returning charge powder, other flux and fuel are prepared burden by following weight percent:
7 parts of nickel flash smelting Water Quenching Slag; 24 parts of Australia's breezes;
30 parts of Shanxi Dai County breezes; 13 parts, BF return fines powder;
5 parts, Wingdale; 7 parts of ground dolomites;
8 parts of limes; 6 parts of coke powders.
The Chemical Composition of nickel flash smelting Water Quenching Slag is identical with the composition of granularity and benchmark embodiment's.
(3) mix:
Above-mentioned compound and through two sections mixer mixings, Jia Shui, obtains compound after the batching mixing;
(4) sintering:
Through cloth, agglomerating plant sintering, the treated finished product agglomerate that obtains, its finished product agglomerate dual alkalinity 2.0, barrate strength is 70.3%(ISO), 900 ℃ of reduction degrees 72.6%.
But the present embodiment batch production, each component weight sum is 100kg.
Embodiment 2
The present embodiment is milled to thinner granularity with the further roller of nickel flash smelting Water Quenching Slag, and has suitably reduced the proportioning of solid fuel coke powder, and concrete steps are as follows:
(1) high pressure roller mill preprocessing
The nickel flash smelting Water Quenching Slag is through Pretreatment by high pressure roller grinding, its-ratio of 0.074mm is 57%;
(2) batching:
Nickel flash smelting Water Quenching Slag after the high pressure roller mill preprocessing and powdered iron ore, blast furnace returning charge powder, other flux and fuel are prepared burden by following weight percent:
7 parts of nickel flash smelting Water Quenching Slag; 24.3 parts of Australia's breezes;
30 parts of Shanxi Dai County breezes; 13 parts, BF return fines powder;
5 parts, Wingdale; 7 parts of ground dolomites;
8 parts of limes; 5.7 parts of coke powders.
The Chemical Composition of nickel flash smelting Water Quenching Slag is identical with the composition of granularity and benchmark embodiment's.
(3) mix:
Above-mentioned compound and through two sections mixer mixings, Jia Shui, obtains compound after the batching mixing;
(4) sintering:
Through cloth, agglomerating plant sintering, the treated finished product agglomerate that obtains, its finished product agglomerate dual alkalinity 2.0, barrate strength is 69.8%(ISO), 900 ℃ of reduction degrees 72.2%.
But the present embodiment batch production, each component weight sum is 100kg.
Contrast embodiments of the invention 1 can be found out with benchmark example 1, the nickel flash smelting Water Quenching Slag is through the high pressure roller mill preprocessing, then as sintered material when producing agglomerate, with the nickel flash smelting Water Quenching Slag without the high pressure roller mill preprocessing, directly compare with addition of produce agglomerate in sintered material, sintered ore rotary drum strength is improved, and is brought up to into 70.3% by 68.5% of benchmark example, and 900 ℃ of reduction degrees of agglomerate bring up to 72.6% by 68.8%.
Contrast embodiments of the invention 2 can be found out with embodiment 1, after the further roller of nickel flash smelting Water Quenching Slag is milled to thinner granularity, even when the solid fuel proportioning in sintered material is reduced to 5.7% by 6%, the barrate strength of agglomerate and 900 ℃ of reduction degrees are still 6% index close to the solid fuel proportioning of embodiment 1.As seen, the nickel flash smelting Water Quenching Slag is after the high pressure roller mill preprocessing, and not only the barrate strength of agglomerate and reduction degree are improved, but also can reduce solid-fuelled proportioning.
The nickel flash smelting Water Quenching Slag also is called for short melting nickel slag.
Claims (2)
1. a nickel flash smelting Water Quenching Slag utilizes method, it comprises following batching, batch mixing and sintering successively, it is characterized in that: before batching, first the nickel flash smelting Water Quenching Slag is passed through the high pressure roller mill preprocessing in advance, and then prepare burden, mix with other sintered material, carry out sintering, produce agglomerate.
Nickel flash smelting Water Quenching Slag according to claim 1 utilize method, its steps characteristic is:
IThe high pressure roller mill preprocessing
The nickel flash smelting Water Quenching Slag is through the high pressure roller mill preprocessing, make-ratio of 0.074mm reaches more than 40%;
IIBatching
Nickel flash smelting Water Quenching Slag after the high pressure roller mill preprocessing and powdered iron ore, blast furnace returning charge powder, other flux and fuel are prepared burden to scale, and concrete proportioning is:
Nickel flash smelting Water Quenching Slag 5-15 part
Australia breeze 10-40 part
10 ~ 40 parts of Shanxi Dai County breezes
10 ~ 20 parts, BF return fines powder
2 ~ 6 parts of limestone powders
5 ~ 10 parts of ground dolomites
3 ~ 9 parts of limes
4 ~ 10 parts of coke powders;
IIIMix
Above-mentioned compound and through two sections mixer mixings, Jia Shui, obtains compound after the batching mixing;
IVSintering
To mix pellet and carry out cloth, sintering on agglomerating plant, obtain the finished product agglomerate.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103816863A (en) * | 2014-03-12 | 2014-05-28 | 福州大学 | Bergmeal-nickel slag composite adsorption material used for treating phosphorus-containing waste water and preparation of bergmeal-nickel slag composite adsorption material |
| CN103882223A (en) * | 2014-04-02 | 2014-06-25 | 山西太钢不锈钢股份有限公司 | Method for increasing bursting temperature of laterite nickel ore pellets |
| CN104525957A (en) * | 2014-12-07 | 2015-04-22 | 金川集团股份有限公司 | Method for preparing raw material of synthesized nickel carbonyl through residual nickel poles |
| CN109207718A (en) * | 2018-09-30 | 2019-01-15 | 山西太钢不锈钢股份有限公司 | The method for preparing stainless steel raw material sinter using nickel slag |
| CN110106348A (en) * | 2019-05-21 | 2019-08-09 | 中南大学 | A kind of compound additive and its application method for strengthening lateritic nickel ore sintering |
Citations (1)
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| CN101570821A (en) * | 2009-06-15 | 2009-11-04 | 中南大学 | Sintering method of high proportion specularite concentrate |
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2013
- 2013-01-15 CN CN201310012545XA patent/CN103114198A/en active Pending
Patent Citations (1)
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| CN101570821A (en) * | 2009-06-15 | 2009-11-04 | 中南大学 | Sintering method of high proportion specularite concentrate |
Non-Patent Citations (1)
| Title |
|---|
| 朱德庆，等: ""高压辊磨和润磨预处理强化硫酸渣球团对比研究"", 《中南大学学报(自然科学版)》, vol. 42, no. 7, 31 July 2011 (2011-07-31), pages 1829 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103816863A (en) * | 2014-03-12 | 2014-05-28 | 福州大学 | Bergmeal-nickel slag composite adsorption material used for treating phosphorus-containing waste water and preparation of bergmeal-nickel slag composite adsorption material |
| CN103816863B (en) * | 2014-03-12 | 2015-12-02 | 福州大学 | For diatomite-nickel slag composite adsorbing material and the preparation thereof for the treatment of of Phosphorus Containing Waste Water |
| CN103882223A (en) * | 2014-04-02 | 2014-06-25 | 山西太钢不锈钢股份有限公司 | Method for increasing bursting temperature of laterite nickel ore pellets |
| CN103882223B (en) * | 2014-04-02 | 2016-03-30 | 山西太钢不锈钢股份有限公司 | A kind of method improving red soil nickel ore bursting temperature of pellet ores |
| CN104525957A (en) * | 2014-12-07 | 2015-04-22 | 金川集团股份有限公司 | Method for preparing raw material of synthesized nickel carbonyl through residual nickel poles |
| CN104525957B (en) * | 2014-12-07 | 2016-05-18 | 金川集团股份有限公司 | A kind of method of utilizing nickel anode scrap to prepare synthesizing carbonyl nickel raw material |
| CN109207718A (en) * | 2018-09-30 | 2019-01-15 | 山西太钢不锈钢股份有限公司 | The method for preparing stainless steel raw material sinter using nickel slag |
| CN110106348A (en) * | 2019-05-21 | 2019-08-09 | 中南大学 | A kind of compound additive and its application method for strengthening lateritic nickel ore sintering |
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Application publication date: 20130522 |