CN107663593A - Enrichment method containing cobalt, nickel minerals - Google Patents
Enrichment method containing cobalt, nickel minerals Download PDFInfo
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- CN107663593A CN107663593A CN201610610921.9A CN201610610921A CN107663593A CN 107663593 A CN107663593 A CN 107663593A CN 201610610921 A CN201610610921 A CN 201610610921A CN 107663593 A CN107663593 A CN 107663593A
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- Prior art keywords
- mineral aggregate
- gas outlet
- gas
- primordial
- reduction
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/02—Obtaining nickel or cobalt by dry processes
- C22B23/021—Obtaining nickel or cobalt by dry processes by reduction in solid state, e.g. by segregation processes
Abstract
The invention discloses a kind of enrichment method containing cobalt, nickel minerals.The enrichment method is will first to contain cobalt, nickel minerals progress reduction treatment, then passes through magnetic separation and obtains the cobalt of enrichment, nickel minerals.This method can solve existing cobalt, nickel minerals enrichment method has high energy consumption, cobalt, the problem of nickel elimination factor is low.
Description
Technical field
The present invention relates to technical field of beneficiation, specifically it is a kind of will be enriched to containing the cobalt in cobalt, nickel minerals material, nickel it is higher
The method of grade.
Background technology
The existing enrichment method containing cobalt ore, i.e. first prior art, such as " a kind of beneficiation method containing cobalt ore "（Patent Shen
Please number be：201510672435.5 data of publication of application on December 30th, 2015）, this method is to crush material containing cobalt ore in advance,
Then directly carry out obtaining after multiple magnetic, flotation the cobalt ore of enrichment.There are the following problems for this technology：
1. high energy consumption.Due to needing that raw ore is crushed, on the one hand, because raw ore hardness is high, crush difficulty, high energy consumption；Separately
On the one hand, magnetic separation and flotation are directly carried out after crushing, Particle size requirements height is crushed to mineral aggregate, accounts for 50-90% up to -0.074mm, more
Substantially increase comminution energy conssumption.
2. it is low to be enriched with elimination factor：It is close to remain the impurity such as its specific susceptibility of larger amount of cobalt ore and gangue, it is not easy to logical
Cross magnetic separation separation and concentration, therefore the result of method enrichment can be caused to have larger amount of cobalt ore and can not separated from low-grade ore deposit
Out.
3. needing multiple magnetic, flotation, not only low yield, and larger amount of flotation agent is needed, therefore waste water can be brought, given up
The problem of Slag treatment.
The existing another method for carrying out enriching and recovering to cobalt, nickel minerals, i.e. second prior art, be " one kind enrichment
The lateritic nickel ore technique of nickel and/or cobalt "（Number of patent application is：200810246586.4 apply for publication date May 27 in 2009
Day）, the technology is that then washup, screening respectively, finally or enters -0.076mm mineral aggregates by limonite and serpentine ore sorting
Row magnetic separation.Compared with above-mentioned first prior art, it is mainly to lack flotation the technical scheme respectively.Still have
The the 1st, 2 deficiency in first prior art.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of enrichment method containing cobalt, nickel minerals.In this way may be used
To solve the problems, such as that it is low that existing cobalt, nickel minerals enrichment method have high energy consumption, cobalt, nickel elimination factor.
In order to solve the problems, such as the present invention, the enrichment method of the invention containing cobalt ore comprises the following steps：Cobalt ore will first be contained
Reduction treatment is carried out, the cobalt ore of enrichment is then obtained by magnetic separation.
The above-mentioned enrichment method containing cobalt ore, the preferable scheme that the reduction treatment can use are to set mineral aggregate on one to enter
Mouthful, divide into mineral aggregate outlet reduction furnace in carry out；Between the mineral aggregate import and mineral aggregate outlet in the reduction furnace
Provided with also Primordial Qi gas outlet, it is provided between the mineral aggregate import and the also Primordial Qi gas outlet and helps gas outlet；Also Primordial Qi
Body is input in the material containing cobalt ore being deposited in the reduction furnace by the also Primordial Qi gas outlet and reacted with material containing cobalt ore；
Combustion-supporting gas is combustion-supporting in the reduction furnace by helping gas outlet to input, and makes to be deposited in described help more than gas outlet and contains cobalt
Mineral aggregate is preheated.
In the above-mentioned enrichment method containing cobalt ore, more preferable scheme is：The particle diameter of the material containing cobalt ore is below 30 millimeters；Institute
The reduction temperature for stating also Primordial Qi gas outlet to the reducing zone helped between gas outlet is less than 500 DEG C；By the reduction
The material containing cobalt ore of processing carries out magnetic separation again after being crushed to granularity and being less than 80 mesh.
In order to solve the problems, such as the present invention, the enrichment method of the invention containing nickel minerals comprises the following steps：Nickel minerals will first be contained
Reduction treatment is carried out, the nickel minerals of enrichment is then obtained by magnetic separation.
In the above-mentioned enrichment method containing nickel minerals, the preferable scheme that the reduction treatment can use is to set mineral aggregate on one
Import, divide into mineral aggregate outlet reduction furnace in carry out；The mineral aggregate import and the mineral aggregate in the reduction furnace export it
Between be provided with also Primordial Qi gas outlet, help gas outlet in the mineral aggregate import and described be also provided between Primordial Qi gas outlet；Reduction
Gas is input in the nickeliferous mineral aggregate being deposited in the reduction furnace by the also Primordial Qi gas outlet to be occurred instead with nickeliferous mineral aggregate
Should；Combustion-supporting gas is combustion-supporting in the reduction furnace by helping gas outlet to input, and makes to be deposited in described help more than gas outlet
Nickeliferous mineral aggregate is preheated.
The above-mentioned enrichment method containing nickel minerals, more preferable scheme are：The particle diameter of the nickeliferous mineral aggregate is below 30 millimeters；It is described
Also the reduction temperature of Primordial Qi gas outlet to the reducing zone helped between gas outlet is less than 500 DEG C；By the also original place
The nickeliferous mineral aggregate of reason carries out magnetic separation again after being crushed to granularity and being less than 80 mesh.
By adopting the above-described technical solution, the present invention has the advantages that compared with prior art：
1. because reduction treatment can make the specific susceptibility of cobalt ore and nickel minerals improve thousands of times, therefore, reduction treatment with afterwards
The combined enrichment elimination factor that can greatly improve cobalt ore and nickel minerals of magnetic separation.Such as with first prior art reality of the present invention
Example 1 is applied to compare：Prior art is enriched with to the raw ore containing cobalt 11.07%, and the enrichment of its cobalt is more than the elimination factor of head grade
76.42%, the average grade for being enriched with ore deposit is containing cobalt 28.4%；This technology is enriched with to the raw ore containing cobalt 4.01%, the enrichment of its cobalt ore
Elimination factor more than head grade is 94%, and the grade for being enriched with ore deposit is containing cobalt 31.52%；This technology is entered to nickeliferous 1.20% raw ore
Row enrichment, the enrichment of its nickel minerals are 90% more than the elimination factor of head grade, and the grade for being enriched with ore deposit is nickeliferous 3.50%.
2. energy consumption is low.Before reduction treatment, raw ore is crushed need not be meticulous, only less than 30 millimeters of best particle diameter,
- 0.074 millimeter compared with prior art accounts for 50-90% or -0.074 millimeter is wanted big manyfold, and ore deposit is crushed after reduction treatment
Expect that particle diameter is also only less than 80 mesh, be that prior art requires several times of particle diameter, and the mineral aggregate hardness after reduction treatment
Much smaller, its grindability is more than 5 times of raw ore material（By milling time compared in terms of）, therefore, crushing and crushing this procedure
Energy consumption can be substantially reduced.
3. due to the process problem in the absence of waste water, waste residue caused by flotation, it is enriched with processing total energy consumption with 30 lis of particle diameter
Exemplified by raw ore below rice, one ton of raw ore is often handled, need to be consumed below 50 kilograms of standard coal, electricity is less than 25 kilowatt hours.
4. because reducing gas is to add mineral aggregate import upper, in reduction furnace of the mineral aggregate outlet under, in reaction zone, also
Therefore Primordial Qi and the direction of motion of mineral aggregate are on the contrary, can allow the reduction process of mineral aggregate to obtain preferable effect.
Brief description of the drawings
Fig. 1 is the structural representation that the inventive method embodiment uses reduction furnace.
Fig. 2 is the front view of combustion-supporting gas gas distribution pipe and also Primordial Qi gas distribution pipe in the present invention.
Fig. 3 is the top view of combustion-supporting gas gas distribution pipe and also Primordial Qi gas distribution pipe in the present invention.
Fig. 4 is the partial enlarged view at A in Fig. 3.
Embodiment
Below in conjunction with attached Example, specific detailed description is done to the present invention：
Embodiment 1 --- it is the method that the raw ore containing cobalt 4.01% carries out being enriched with processing：
The step of this method is：
1. it will first contain cobalt ore material to be crushed to less than less than 30 millimeters；
2. and then the material containing cobalt ore after crushing carries out reduction treatment；
3. the material containing cobalt ore of reduction treatment is less than 80 mesh through being crushed to granularity；
4. after the magnetic separator magnetic separation of the Gauss of magnetic field intensity 5000, the cobalt concentrate powder that amount containing cobalt is 31.52% is obtained, cobalt returns
Yield is 94%.
Above-mentioned reduction treatment be set on one mineral aggregate import, divide into mineral aggregate outlet reduction furnace in carry out, reduction furnace
There is a feed hopper 1 upper end, is exhanst gas outlet between feed hopper 1 and the furnace shell 2 of reduction furnace, and the upper end import of feed hopper 1 is
The mineral aggregate import of the mineral aggregate to be restored of reduction furnace, reduction furnace lower end are connected with a conveying worm 16, spiral shell by pan 8 of gathering materials
The mineral aggregate outlet for revolving conveyer 16 is exported for the mineral aggregate of reduction furnace, and the mineral aggregate after reduction reaction is exported outside stove from here.
Reduction furnace is provided with combustion-supporting gas gas distribution pipe 5 and also Primordial Qi gas distribution pipe 7, the also Primordial Qi gas outlet also on Primordial Qi gas distribution pipe 7
It is located between the mineral aggregate import of reduction furnace and mineral aggregate outlet；Gas outlet is helped to be located at reduction furnace on combustion-supporting gas gas distribution pipe 5
Between mineral aggregate import and reducing gas outlet.The inside of reduction furnace is divided into preheating by combustion-supporting gas gas distribution pipe 5 and also Primordial Qi gas distribution pipe 7
Area T1, reaction zone T2 and cooling zone T3, preheating zone T1 are from the region being exported between combustion-supporting gas gas distribution pipe 5 of feed hopper 1, instead
Answer area T2 be from combustion-supporting gas gas distribution pipe 5 to the region also between Primordial Qi gas distribution pipe 7, cooling zone T3 be from also Primordial Qi gas distribution pipe 7 to
Region between the lower end of the pan of gathering materials of reduction furnace, i.e., combustion-supporting gas gas distribution pipe 5 are mounted in preheating zone T1 and reaction zone T2 engagement
Portion, also Primordial Qi gas distribution pipe 7 are mounted in reaction zone T2 and cooling zone T3 junction surface.
In furnace shell 2, preheating zone T1 top is formed equipped with a conical shell 3 that can be mainly adjusted by height and position
Distributing device；In furnace shell 2, cooling zone T3 top is equipped with gas cooler 8, and the import of gas cooler 8 is connected by pipeline 9
The air outlet of an air blower 10 that damper is provided with import is connect, the outlet of gas cooler 8 connects combustion-supporting gas by pipeline 6
The entrance of gas distribution pipe 5, that is, help fuel gas inlet；In furnace shell 2, cooling zone T3 bottom is equipped with water cooler 13, water cooler 13
Import be connected with the running water pipe 15 with valve, the outlet of water cooler 13 passes through pipeline 12 and connects a blue-gas generator
14 steam inlet；
The water-gas outlet of blue-gas generator 14 connects the also Primordial Qi entrance of reduction furnace by pipeline 11, that is, goes back Primordial Qi gas distribution pipe 7
Entrance.
Identical with the structure of also Primordial Qi gas distribution pipe 7 for combustion-supporting gas gas distribution pipe 5 in the present embodiment, their structure such as Fig. 2 is extremely
Shown in Fig. 4, there is a supervisor 21,14 branch pipes 22, every branch pipe are horizontally arranged with respectively being responsible for 21 two opposite flanks
22 side, i.e., side in Fig. 1 downward, it is respectively equipped with multiple escape pipes 23.The open at one end of supervisor 21 is used as and helped
Fuel gas inlet, other end closing；One end of each branch pipe 22 connects with supervisor, other end closing；The one of every escape pipe 23
Coupled branch pipe is held to connect, the other end, which opens wide to be used as, helps gas outlet.
The method of the reduction treatment containing cobalt ore of the present embodiment is such：
Containing cobalt ore before the hopper 1 of reduction furnace is entered, first bulk is sieved containing cobalt ore, particle diameter is obtained and is treated also less than 30 millimeters
The mineral aggregate 4 of processing to be restored, is then transported in the hopper 1 in Fig. 1 by the mineral aggregate 4 of original place reason by elevator again.
The combustion-supporting gas that the air that air blower 10 bloats uses in the reduction treatment as this material containing cobalt ore, the combustion-supporting gas pass through
Pipeline 9 enters into and through the gas cooler 8 that reduction furnace is formed based on helix tube, makes by combustion-supporting in gas cooler 8
Gas is heated, while is cooled down the mineral aggregate 4 outside gas cooler 8.Combustion-supporting gas after heating passes through pipeline 6 again
With combustion-supporting gas gas distribution pipe 5, gas outlet is helped to discharge from combustion-supporting gas gas distribution pipe 5, the combustion-supporting gas of discharge is with coming from reaction zone T2
The reducing gas mixing that reaction is not completed behind upper end is burnt, and caused heat is used for the material containing cobalt ore in the T1 of preheating zone
4 preheatings.The height of the conical shell 3 in the T1 of preheating zone is adjusted, the piling height of mineral aggregate 4 in the T1 of preheating zone can be adjusted, so as to
Material containing cobalt ore 4 is obtained preferable pre-heat effect and the waste of heat energy can be prevented.
Blue-gas generator 14 adjusts it by the quantity from control input coal and by the quantity of control input steam
Obtain the size of the concentration and the number of output of carbon monoxide and hydrogen in water-gas.Water-gas conduct caused by blue-gas generator 14
The also Primordial Qi used in the reduction treatment of this material containing cobalt ore, also Primordial Qi it should pass through pipeline 11 and the also input of Primordial Qi gas distribution pipe 7 reduction
Stove, and oxidation-reduction reaction occurs with the mineral aggregate 4 in reduction furnace reaction zone T2, reduced material containing cobalt ore 4.The present embodiment
With including the embodiment of the present invention being described below, many, each secondary practice result that the present inventor was carried out shows：Reduction
The concentration of carbon monoxide and hydrogen in gas is higher, and the reduction effect that material containing cobalt ore 4 obtains is better.
Running water is inputted by running water pipe 15 with valve in the water cooler 13 that reduction furnace formed based on helix tube,
Flow through water cooler 13 water it is heated be transformed into steam, and inputted by pipeline 12 in blue-gas generator 14 and be used to produce water
Coal gas, flow through the water of water cooler 13 while the material containing cobalt ore 4 outside water cooler 13 is obtained further cooling, regulation is originally
The size of penstock, the yield of steam and the cooling degree of mineral aggregate 4 can be controlled.These are cooled down by the mineral aggregate 4 cooled down again
To after the degree for being unlikely to reoxidize with air, can with by conveying worm 16 discharge reduction furnace outside.Pass through control
The speed that conveying worm 16 discharges material containing cobalt ore 4 can adjust reaction temperature in reaction zone T1 below 500 DEG C, practice card
Bright, too high reaction temperature can cause the sintering of the material containing cobalt ore, and energy consumption can be caused too high, and impurity can be caused to penetrate into cobalt
It is central, increase later stage separation and concentration difficulty.Blue-gas generator 14 is by the quantity from control input coal and passes through control input
The quantity of steam obtains the size of the concentration and the number of output of carbon monoxide and hydrogen in water-gas to adjust it.Water-gas occurs
Water-gas caused by stove 14 also Primordial Qi by pipeline 11 and should go back Primordial Qi gas distribution pipe as the also Primordial Qi used in this reduction treatment
7 input reduction furnaces, and oxidation-reduction reaction occurs with the material containing cobalt ore 4 in reduction furnace reaction zone T2, obtain material containing cobalt ore 4
Reduction, increases its specific susceptibility.
Embodiment 2 --- it is that nickeliferous 1.2% raw ore carries out the method for being enriched with processing：
The step of this method is：
1. first nickeliferous mineral aggregate is crushed to less than less than 30 millimeters；
2. and then the material containing cobalt ore after crushing carries out reduction treatment；
3. the nickeliferous mineral aggregate of reduction treatment is less than 80 mesh through being crushed to granularity；
4. after the magnetic separator magnetic separation of the Gauss of magnetic field intensity 5000, the nickel content of acquisition is 3.5% nickel ore concentrate powder, and nickel returns
Yield is 90%.
The present embodiment is in the reduction treatment containing nickel minerals, in addition to mineral aggregate is nickeliferous 1.2% raw ore, reduction treatment it is other
Part is identical with embodiment 1.
Claims (6)
1. a kind of enrichment method containing cobalt ore, it is characterised in that comprise the following steps：Cobalt ore will first be contained and carry out reduction treatment, then
The cobalt ore of enrichment is obtained by magnetic separation.
2. the enrichment method containing cobalt ore according to claim 1, it is characterised in that：
The reduction treatment be set on one mineral aggregate import, divide into mineral aggregate outlet reduction furnace in carry out；In the reduction furnace
Also Primordial Qi gas outlet is provided between the interior mineral aggregate import and mineral aggregate outlet, in the mineral aggregate import and the also Primordial Qi
It is provided between gas outlet and helps gas outlet；Reducing gas is input to by the also Primordial Qi gas outlet and is deposited in the reduction furnace
Reacted in interior material containing cobalt ore with material containing cobalt ore；Combustion-supporting gas is combustion-supporting in the reduction furnace by helping gas outlet to input,
The material containing cobalt ore for making to help more than gas outlet described in being deposited in is preheated.
3. the enrichment method according to claim 1 or claim 2 containing cobalt ore, it is characterised in that：The particle diameter of the material containing cobalt ore is 30
Millimeter is following；The reduction temperature of also Primordial Qi gas outlet to the reducing zone helped between gas outlet is less than 500 DEG C；Through
The material containing cobalt ore for crossing the reduction treatment carries out magnetic separation again after being crushed to granularity and being less than 80 mesh.
4. a kind of enrichment method containing nickel minerals, it is characterised in that comprise the following steps：Nickel minerals will first be contained and carry out reduction treatment, then
The nickel minerals of enrichment is obtained by magnetic separation.
5. the enrichment method containing nickel minerals according to claim 4, it is characterised in that：
The reduction treatment be set on one mineral aggregate import, divide into mineral aggregate outlet reduction furnace in carry out；In the reduction furnace
Also Primordial Qi gas outlet is provided between the interior mineral aggregate import and mineral aggregate outlet, in the mineral aggregate import and the also Primordial Qi
It is provided between gas outlet and helps gas outlet；Reducing gas is input to by the also Primordial Qi gas outlet and is deposited in the reduction furnace
Reacted in interior nickeliferous mineral aggregate with nickeliferous mineral aggregate；Combustion-supporting gas is combustion-supporting in the reduction furnace by helping gas outlet to input,
The nickeliferous mineral aggregate for making to help more than gas outlet described in being deposited in is preheated.
6. according to the enrichment method containing nickel minerals described in claim 4 or 5, it is characterised in that：The particle diameter of the nickeliferous mineral aggregate is 30
Millimeter is following；The reduction temperature of also Primordial Qi gas outlet to the reducing zone helped between gas outlet is less than 500 DEG C；Through
The nickeliferous mineral aggregate for crossing the reduction treatment carries out magnetic separation again after being crushed to granularity and being less than 80 mesh.
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| CN201610610921.9A CN107663593A (en) | 2016-07-29 | 2016-07-29 | Enrichment method containing cobalt, nickel minerals |
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| CN201610610921.9A CN107663593A (en) | 2016-07-29 | 2016-07-29 | Enrichment method containing cobalt, nickel minerals |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3876415A (en) * | 1972-02-09 | 1975-04-08 | Int Nickel Co | Concentration of nickel values in oxidized ores |
| CN101020957A (en) * | 2006-12-22 | 2007-08-22 | 昆明贵金属研究所 | Process of fast reducing carbon-containing red mud nickel ore pellet to beneficiate nickel in a bottom rotating furnace |
| CN101413056A (en) * | 2008-11-25 | 2009-04-22 | 朱军 | Manganese ore reduction calcination method and apparatus |
| CN101514401A (en) * | 2009-03-18 | 2009-08-26 | 中南大学 | Method for efficiently concentrating cobalt and nickel from low-grade nickeliferous laterite ore |
| CN102373329A (en) * | 2010-08-18 | 2012-03-14 | 沈阳有色金属研究院 | Method for gathering nickel and iron from laterite-nickel ores |
| CN203462103U (en) * | 2013-07-29 | 2014-03-05 | 青岛智邦炉窑设计研究有限公司 | Mineral roasting reduction device |
-
2016
- 2016-07-29 CN CN201610610921.9A patent/CN107663593A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3876415A (en) * | 1972-02-09 | 1975-04-08 | Int Nickel Co | Concentration of nickel values in oxidized ores |
| CN101020957A (en) * | 2006-12-22 | 2007-08-22 | 昆明贵金属研究所 | Process of fast reducing carbon-containing red mud nickel ore pellet to beneficiate nickel in a bottom rotating furnace |
| CN101413056A (en) * | 2008-11-25 | 2009-04-22 | 朱军 | Manganese ore reduction calcination method and apparatus |
| CN101514401A (en) * | 2009-03-18 | 2009-08-26 | 中南大学 | Method for efficiently concentrating cobalt and nickel from low-grade nickeliferous laterite ore |
| CN102373329A (en) * | 2010-08-18 | 2012-03-14 | 沈阳有色金属研究院 | Method for gathering nickel and iron from laterite-nickel ores |
| CN203462103U (en) * | 2013-07-29 | 2014-03-05 | 青岛智邦炉窑设计研究有限公司 | Mineral roasting reduction device |
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Application publication date: 20180206 |