CN101063185A - Nickel-ferrum smelting technique for nickel oxide ore by submerged arc furnace - Google Patents
Nickel-ferrum smelting technique for nickel oxide ore by submerged arc furnace Download PDFInfo
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- CN101063185A CN101063185A CN 200610076038 CN200610076038A CN101063185A CN 101063185 A CN101063185 A CN 101063185A CN 200610076038 CN200610076038 CN 200610076038 CN 200610076038 A CN200610076038 A CN 200610076038A CN 101063185 A CN101063185 A CN 101063185A
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Abstract
The invention discloses a craft to smelt ferro nickel with nickel oxide ore through ore heated furnace, which comprises the following steps: bruising original ore; screening; mixed-batching with coke, burnt lime or limestone; clinkering; getting caking ore block; mixed-batching coke, caking ore block, burnt lime or limestone and fluor; smelting in ore heated furnace; getting ferro nickel; setting the mass ratio of additive and clinkering ore as 2-15% fluor, 5-25% coke, 2-8% burnt lime or limestone. This invention possesses small pollution and high reclaiming ratio.
Description
Technical field:
The present invention relates to nickel oxide ore smelting technology, particularly nickel oxide ore through mine heat furnace smelting nickel-iron technology.
Background technology:
Along with the widespread use of global stainless steel and special steel, causing the main element of smelting stainless steel and special steel---the short supply of nickel metal causes that price skyrockets.Traditional nickel Metal Production is mainly extracted its mature production technology from the nickel sulfide ore that takes up an area of ball nickel resources 30%.But exploit continuously through last 100 years, present reserves deficiency, resource presents crisis.Force people to give more multiple looking to extracting the nickel metal in the red soil nickel ore (nickel oxide ore) that takes up an area of ball nickel resources 70%.For a long time red soil nickel ore do not obtain the major cause of large-scale development be from these type of mineral reserve, extract technology cost height, the complex process of nickel, yield poorly, seriously polluted.The main smelting process of red soil nickel ore comprises at present: hydrometallurgy, it is the method that sulfuric acid soaks, nickel oxide solid-state in the red soil nickel ore, chromic oxide, ferric oxide etc. are converted into mixing solutionss such as liquid single nickel salt, chromium sulphate, ferrous sulfate, again single nickel salt is therefrom separated, form the metallic nickel that only accounts for total amount 1～2% through electrolysis, all the other compositions all go out of use, and this processing unit one-time investment is big, complex process, the cycle is long, environmental pollution is serious; Also can adopt blast-furnace smelting, but because the normal association of red soil nickel ore there is Cr
2O
3Composition, and the fusing point of chromium is very high, makes that the molten iron viscosity after melting is big, the Ni and Cr contained molten iron can not flow out smoothly, causes the serious consequence of freezing stove, ruining stove; Tradition mine heat furnace smelting technology is because there is crystal water in nickel oxide ore, in smelting process, occur easily causing furnace temperature to reduce rapidly because of containing water excess, cause molten iron in stove, to condense and become solid-state, cause stove obstruction even fryer accident that workman's the life security and the property safety of company are worked the mischief, and the molten iron illiquidity for preparing, be not easy to next step operation.According to traditional mine heat furnace smelting technology, red soil nickel ore can not get rational sufficient cause always simultaneously, destroys environment.
Summary of the invention:
The present invention is intended to address the above problem, and provides a kind of nickel oxide ore through mine heat furnace smelting nickel-iron technology.
Above-mentioned purpose of the present invention is to realize by following technical scheme.
Nickel oxide ore provided by the present invention mainly comprises the steps: through mine heat furnace smelting nickel-iron technology
With the crushing raw ore screening, carry out normal sintering and obtain the sintering nugget with coke, unslaked lime/Wingdale mix;
Sintering nugget, coke, Wingdale/unslaked lime and fluorite be mixed carry out mine heat furnace smelting and obtain ferronickel, wherein additive and agglomerate weight ratio are:
Fluorite 2～15%
Coke 5～25%
Wingdale/unslaked lime 2-8%.
Wherein in the technology of preparation agglomerate, add coke: 5%-10%, unslaked lime: 8%-16%.
Wherein said mine heat furnace smelting technology also comprises the steps:
The pulverizing of sintering nugget is got fine ore after carry out magnetic separation after the screening of 300～500 mesh sieves;
Fine ore and coke, unslaked lime/Wingdale mix are carried out sintering, obtain the sintering nugget;
Sintering nugget behind the double sintering and coke, Wingdale/unslaked lime and fluorite be mixed carry out mine heat furnace smelting and obtain ferronickel.
After wherein raw ore crushes and screens particle diameter is carried out sintering less than breeze and coke, the unslaked lime/Wingdale mix of 3mm, obtain the sintering nugget.
The main component of wherein said nickel oxide ore and weight ratio thereof are: nickel: 0.8～3%; Chromium: 0.3～12%; Silicon-dioxide 7～38%; Iron: 8～50%.The main component and the weight ratio thereof of wherein said nickel oxide ore also comprise: magnesium 6～30%; Aluminium: 3～15%.
The weight ratio of wherein said additive and agglomerate is preferably:
Fluorite 5～10%
Coke 8～20%
Wingdale/unslaked lime 15～20%.
CaO content is greater than 50% in the wherein said Wingdale, and CaO content is greater than 80% in the unslaked lime.CaF in the described fluorite
2Content＞80%.
Smelting process in the past all is to smelt by wet method or intermediate frequency furnace, it is very high to the requirement of ore, can only smelt at 1.2%-1.4% and the ore that surpasses more than 2% nickel content wherein, and the pollution that surpasses is very big, the rate of recovery is very low, investment to equipment requires very high, compare with prior art, smelting process provided by the present invention can be utilized nickel oxide ore completely, and wherein nickel content is not had particular requirement, pollute little, rate of recovery height.
Embodiment:
Engage specific embodiment below the present invention is further explained, the following example does not limit protection scope of the present invention, and all modification and adjustment of making based on thought of the present invention all belong to the scope of protection of the invention.
Raw ore is selected from the nickel chromium triangle iron ore of Albanian import among the embodiment.
With the crushing raw ore screening, wherein particle diameter carries out sintering less than breeze and coke, the unslaked lime/Wingdale mix of 3mm, obtains the sintering nugget;
Once sintered gained sintering nugget pulverizing is got fine ore after carry out magnetic separation after the screening of 300～500 mesh sieves;
Fine ore and coke, unslaked lime/Wingdale mix are carried out sintering, obtain the sintering nugget;
Sintering nugget agglomerate and other raw material mixed smelting with particle diameter 10～50mm obtain ferronickel.
Used nickel chromium triangle iron ore major ingredient and content (weight %) are
The main component of gained agglomerate and content (weight %) are:
Ore deposit hot stove charge composition (weight/ton) is as following table
The mine heat furnace smelting processing parameter
Smelting gained ferronickel main component and content (weight %) is:
Claims (9)
1. a nickel oxide ore is characterized in that through mine heat furnace smelting nickel-iron technology: described mine heat furnace smelting technology mainly comprises the steps:
With the crushing raw ore screening, carry out sintering and obtain the sintering nugget with coke, unslaked lime/Wingdale mix;
Sintering nugget, coke, Wingdale/unslaked lime and fluorite be mixed carry out mine heat furnace smelting and obtain ferronickel, wherein following additive and agglomerate weight ratio are:
Fluorite 2～15%
Coke 5～25%
Wingdale/unslaked lime 2%-8%.
2. nickel oxide ore as claimed in claim 1 is through mine heat furnace smelting nickel-iron technology, and wherein said raw ore crushes and screens preparation coke, unslaked lime/Wingdale weight percent that agglomerate added and is: coke: 5%-12%; Wingdale: 5%-12%.
3. nickel oxide ore as claimed in claim 1 or 2 is through mine heat furnace smelting nickel-iron technology, and wherein said mine heat furnace smelting technology also comprises the steps:
The pulverizing of sintering nugget is got fine ore after carry out magnetic separation after the screening of 300～500 mesh sieves;
Fine ore and coke, unslaked lime/Wingdale mix are carried out sintering, obtain the sintering nugget;
Sintering nugget behind the double sintering and coke, Wingdale/unslaked lime and fluorite be mixed carry out mine heat furnace smelting and obtain ferronickel.
4. nickel oxide ore as claimed in claim 1 is through mine heat furnace smelting nickel-iron technology, after wherein raw ore crushes and screens particle diameter carried out sintering less than breeze and coke, the unslaked lime/Wingdale mix of 3mm, obtains the sintering nugget.
5. nickel oxide ore as claimed in claim 1 or 2 is through mine heat furnace smelting nickel-iron technology, and the main component of wherein said nickel oxide ore and weight ratio thereof are: nickel: 0.8～3%; Chromium: 0.3～12%; Silicon-dioxide 7～38%; Iron: 8～50%.
6. nickel oxide ore as claimed in claim 4 is through mine heat furnace smelting nickel-iron technology, and the main component and the weight ratio thereof of wherein said nickel oxide ore also comprise: magnesium 6～30%; Aluminium: 3～15%.
7. nickel oxide ore as claimed in claim 1 or 2 is through mine heat furnace smelting nickel-iron technology, and the weight ratio of wherein said additive and agglomerate is preferably:
Fluorite 5～10%
Coke 8～20%
Wingdale/unslaked lime 2%-8%.
8. nickel oxide ore as claimed in claim 1 or 2 is through mine heat furnace smelting nickel-iron technology, and CaO content is greater than 50% in the wherein said Wingdale, and CaO content is greater than 80% in the unslaked lime.
9. nickel oxide ore as claimed in claim 1 or 2 is through mine heat furnace smelting nickel-iron technology, CaF in the wherein said fluorite
2Content＞80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610076038 CN101063185A (en) | 2006-04-24 | 2006-04-24 | Nickel-ferrum smelting technique for nickel oxide ore by submerged arc furnace |
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| CN 200610076038 CN101063185A (en) | 2006-04-24 | 2006-04-24 | Nickel-ferrum smelting technique for nickel oxide ore by submerged arc furnace |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353708B (en) * | 2008-09-11 | 2010-06-02 | 张家港浦项不锈钢有限公司 | Nickel iron smelting process with nickel oxide ore and stainless steel production wastes as raw materials |
| CN101886231A (en) * | 2010-06-30 | 2010-11-17 | 李春德 | Method for manufacturing nickel iron alloy |
| CN104152676A (en) * | 2014-07-25 | 2014-11-19 | 中南大学 | Method for sintering and blending nickel laterite ore |
| CN109136541A (en) * | 2018-09-27 | 2019-01-04 | 昆明理工大学 | A kind of method of valuable metal in the high magnesium silicon lateritic nickel ore of synthetical recovery |
-
2006
- 2006-04-24 CN CN 200610076038 patent/CN101063185A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353708B (en) * | 2008-09-11 | 2010-06-02 | 张家港浦项不锈钢有限公司 | Nickel iron smelting process with nickel oxide ore and stainless steel production wastes as raw materials |
| CN101886231A (en) * | 2010-06-30 | 2010-11-17 | 李春德 | Method for manufacturing nickel iron alloy |
| CN101886231B (en) * | 2010-06-30 | 2012-11-14 | 李春德 | Method for manufacturing nickel iron alloy |
| CN104152676A (en) * | 2014-07-25 | 2014-11-19 | 中南大学 | Method for sintering and blending nickel laterite ore |
| CN104152676B (en) * | 2014-07-25 | 2016-04-06 | 中南大学 | A kind of Iron Ore Matching in Sintering method of red soil nickel ore |
| CN109136541A (en) * | 2018-09-27 | 2019-01-04 | 昆明理工大学 | A kind of method of valuable metal in the high magnesium silicon lateritic nickel ore of synthetical recovery |
| CN109136541B (en) * | 2018-09-27 | 2020-05-15 | 昆明理工大学 | Method for comprehensively recovering valuable metals from high-magnesium silicon laterite-nickel ore |
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Open date: 20071031 |