CN103952539A - Laterite ore roasting system - Google Patents
Laterite ore roasting system Download PDFInfo
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- CN103952539A CN103952539A CN201410169054.0A CN201410169054A CN103952539A CN 103952539 A CN103952539 A CN 103952539A CN 201410169054 A CN201410169054 A CN 201410169054A CN 103952539 A CN103952539 A CN 103952539A
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Abstract
The invention discloses a laterite ore roasting system. The roasting system comprises a roasting device and a first magnetic separation device, wherein the roasting device is adapted to mix the laterite ore with a reducing agent and a vulcanizing agent therein and carry out a roasting treatment to obtain a roasted product, and the first magnetic separation device is connected to the roasting device and adapted to carry out first magnetic separation on the roasted product so as to obtain iron ore concentrate and first tailings respectively. The laterite ore roasting system according to an embodiment of the invention can effectively separate the laterite ore to obtain the iron ore concentrate.
Description
Technical field
The invention belongs to metallurgical industry field, particularly, the present invention relates to a kind of laterite roasting system.
Background technology
Limonite type laterite ore sweetening process is mainly high pressure acidleach or ammonia soaking technology at present.In general these techniques all have the feature that long flow path, chemical consumption amount are large, utilization of resources degree is low, slag quantity discharged is large.Especially for containing polymetallic limonite type laterite, effectively even high efficiency separation the utilization of reclaiming various valuable metals and realizing iron mineral seem particularly important.
Therefore, existing baking separation technology needs further to be studied.
Summary of the invention
The present invention one of is intended to solve the problems of the technologies described above at least to a certain extent or at least provides a kind of useful business to select.For this reason, one object of the present invention is to propose a kind of laterite roasting system, and this system can be carried out effective separation to laterite and be obtained iron ore concentrate.
In one aspect of the invention, the present invention proposes a kind of laterite roasting system.According to embodiments of the invention, this system comprises:
Calciner, described calciner is suitable for laterite mix therein and carry out calcination process with reductive agent and vulcanizing agent, to obtain product of roasting; And
The first concentration equipment, described the first concentration equipment is connected with described calciner, and is suitable for described product of roasting to carry out the first magnetic separation processing, to obtain respectively iron ore concentrate and the first mine tailing.
According to the laterite roasting system of the embodiment of the present invention, can effectively implement above-mentioned laterite roasting method.
In addition, laterite roasting system according to the above embodiment of the present invention can also have following additional technical characterictic:
In some embodiments of the invention, described calciner is fluidized-bed or rotary kiln.Thus, can significantly improve iron ore concentrate separation efficiency.
In some embodiments of the invention, described laterite roasting system further comprises: the first flotation unit, described the first flotation unit is connected with described the first concentration equipment, and is suitable for described the first mine tailing to carry out the first flotation processing, to obtain respectively sulfide concentrate and the second mine tailing; And second concentration equipment, described the second concentration equipment is connected with described the first flotation unit, and is suitable for described the second mine tailing to carry out the second magnetic separation processing, to obtain respectively iron ore concentrate and the 3rd mine tailing.Thus, can further improve iron ore concentrate separation efficiency.
In some embodiments of the invention, described laterite roasting system further comprises: the second flotation unit, and described the second flotation unit is connected with described the first concentration equipment, and is suitable for described iron ore concentrate to carry out the second flotation processing; And drying installation, described drying installation is connected with described calciner, and is suitable for, before described calcination process, described laterite is carried out to drying treatment.Thus, can significantly improve calcination process efficiency.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 is the structural representation of laterite roasting system according to an embodiment of the invention;
Fig. 2 is the structural representation of the laterite roasting system of another embodiment according to the present invention;
Fig. 3 is the structural representation of the laterite roasting system of another embodiment according to the present invention;
Fig. 4 is the schematic flow sheet that utilizes the laterite roasting system enforcement laterite roasting method of one embodiment of the invention;
Fig. 5 is the schematic flow sheet that utilizes the laterite roasting system enforcement laterite roasting method of another embodiment of the present invention;
Fig. 6 is the schematic flow sheet that utilizes the laterite roasting system enforcement laterite roasting method of another embodiment of the present invention.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " a plurality of " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In one aspect of the invention, the present invention proposes a kind of laterite roasting system.Laterite roasting system below with reference to Fig. 1～3 pair embodiment of the present invention is described in detail.According to embodiments of the invention, this system comprises:
Calciner 100: according to embodiments of the invention, calciner 100 is suitable for laterite being mixed therein with reductive agent and vulcanizing agent and carrying out calcination process, thereby can obtain product of roasting.According to embodiments of the invention, the particular type of calciner 100 is also not particularly limited, and according to a particular embodiment of the invention, calciner 100 can be fluidized-bed or rotary kiln.According to embodiments of the invention, the composition of laterite is also not particularly limited, and according to a particular embodiment of the invention, laterite can contain the Ni of 0.5～2.0 weight part; The Fe of 35～60 weight parts; The SiO of 8～15 weight parts
2; The Al of 2～8 weight parts
2o
3; The MgO of 0.5～1.5 weight part; The Cu of 0.01～0.5 weight part; And the Co of 0.01～0.2 weight part.It should be noted that, the nickel in above-mentioned laterite, iron, copper and cobalt are to exist with simple substance and compound form.According to embodiments of the invention, the particular type of reductive agent is also not particularly limited, according to a particular embodiment of the invention, laterite is mixed in fluidized-bed with reductive agent and vulcanizing agent and carry out calcination process, to obtain product of roasting, wherein reductive agent can be for being selected from least one in Sweet natural gas, coke-oven gas and producer gas, it should be explained that, coke-oven gas and producer gas all contain carbon monoxide and hydrogen, and Sweet natural gas can generate after cracking is processed that to using carbon monoxide and hydrogen be that main mixed gas is as reducing gas; Laterite is mixed and carries out calcination process with reductive agent and vulcanizing agent in rotary kiln, to obtain product of roasting, wherein reductive agent can be for being selected from least one in coal, coke and blue charcoal.According to embodiments of the invention, the particular type of vulcanizing agent is also not particularly limited, and according to a particular embodiment of the invention, vulcanizing agent can be for being selected from least one in sulphur and pyrite.According to embodiments of the invention, the condition of calcination process is also not particularly limited, and according to a particular embodiment of the invention, calcination process can be carried out 30～90 minutes at the temperature of 600～850 degrees Celsius.In this step, concrete, in laterite, ferro element be take limonite and pyrrhosiderite and is existed as essential mineral form, and nickel, copper, cobalt, silicon, aluminium, calcium and magnesium etc. are all attached in iron-bearing mineral with oxide colloid form, through calcination process, make iron mineral change iron ore concentrate (Fe into
3o
4), nickel, copper, cobalt exist with sulphided form, and silicon, aluminium, calcium and magnesium still exist with oxide form.The chemical equation occurring is as shown in following:
3FeO (OH)+2CO=Fe
3o
4+ 2CO
2and 6FeO (OH)+H
2=2Fe
3o
4+ 4H
2o
NiO+CO=Ni+CO
2and NiO+H
2=Ni+H
2o
CuO+CO=Cu+CO
2and CuO+H
2=Cu+H
2o
CoO+CO=Co+CO
2and CoO+H
2=Co+H
2o
3Ni+2S＝Ni
3S
2
Co+S＝CoS
2Cu+S＝Cu
2S
The first concentration equipment 200: according to embodiments of the invention, the first concentration equipment 200 is connected with calciner 100, and be suitable for product of roasting to carry out the first magnetic separation processing, thereby iron ore concentrate and the first mine tailing can be obtained respectively.According to embodiments of the invention, the condition that the first magnetic separation is processed is also not particularly limited, and according to a particular embodiment of the invention, the first magnetic separation processing can be carried out under the magneticstrength of 0.05～0.15T.Contriver finds, if magneticstrength is too high, gangue content in gained iron ore concentrate is increased, thereby causes Ni grade to reduce.In this step, concrete, the iron mineral after calcination process changes iron ore concentrate (Fe into
3o
4), nickel, copper, cobalt exist with sulphided form, and silicon, aluminium, calcium and magnesium still exist with oxide form, by the first magnetic separation, process, can so that with the iron ore concentrate of magnetic and nonmagnetic nickel, copper, cobalt sulfide and silicon, aluminium, calcium and magnesium oxides, be able to separated, thereby can separation obtain iron ore concentrate.
According to the laterite roasting system of the embodiment of the present invention, can carry out effective separation to laterite and obtain iron ore concentrate.
With reference to figure 2, according to the laterite roasting system of the embodiment of the present invention, may further include:
The first flotation unit 300: according to embodiments of the invention, the first flotation unit 300 is connected with the first concentration equipment 200, and is suitable for the first mine tailing to carry out the first flotation processing, thereby can obtain respectively sulfide concentrate and the second mine tailing.According to embodiments of the invention, in the first mine tailing, can contain nickel, copper, cobalt sulfide and silicon, aluminium, calcium, magnesium oxide and a small amount of iron ore concentrate.Thus, through flotation, process, can and contain silicon, aluminium, calcium, magnesium oxide mineral and a small amount of iron ore concentrate is able to separated by nickeliferous, copper, cobalt sulfide concentrate.
The second concentration equipment 400: according to embodiments of the invention, the second concentration equipment 400 is connected with the first flotation unit 300, and is suitable for the second mine tailing to carry out the second magnetic separation processing, thereby can obtain respectively iron ore concentrate and the 3rd mine tailing.According to embodiments of the invention, the condition that the second magnetic separation is processed is also not particularly limited, and according to a particular embodiment of the invention, the second magnetic separation is processed and can under the magneticstrength of 0.08～0.2T, be carried out.According to embodiments of the invention, in the second mine tailing, can contain silicon, aluminium, calcium, magnesium oxide mineral and a small amount of iron ore concentrate.In this step, concrete, iron ore concentrate has magnetic, and contain silicon, aluminium, calcium, magnesium oxide mineral, it is non magnetic ore, through the second magnetic separation, process, can by be with magnetic iron ore concentrate with nonmagnetic contain silicon, aluminium, calcium, magnesium oxide mineral be able to separated, thereby can separation obtain iron ore concentrate.
With reference to figure 3, according to the laterite roasting system of the embodiment of the present invention, further comprise:
The second flotation unit 500: according to embodiments of the invention, the second flotation unit 500 is connected with described the first concentration equipment 200, is suitable for resulting iron ore concentrate in the first magnetic separation treating processes to carry out the second flotation processing, thereby can obtains pure iron ore concentrate.Particularly, in magnetic separation treating processes for the first time, utilize, compared with low magnetic field intensity, magnetite is carried out to preliminary election, thereby the iron ore that can avoid excessive field intensity to cause coarse particles to be enclosed with sulphide ores is selected, make iron ore concentrate foreign matter content lower, but unavoidably have sulphide ores and enter iron ore concentrate, utilize thus the second flotation to process and can effectively reduce the sulphide ores foreign matter content in iron ore concentrate, can reclaim the sulphide ores in iron ore concentrate simultaneously.
Drying installation 600: according to embodiments of the invention, drying installation 600 is connected with calciner 100, and is suitable for, before calcination process, laterite is carried out to drying treatment.According to embodiments of the invention, drying mode is also not particularly limited, and according to a particular embodiment of the invention, can adopt pocket type loft drier to be dried or cyclone drying.According to embodiments of the invention, the laterite water content after drying treatment is 5～20wt%.Contriver finds, before laterite is carried out to calcination process, laterite is carried out to drying treatment, can significantly improve follow-up calcination process efficiency.
For convenient, understand, below with reference to Fig. 4～6 pair, this utilizes the laterite roasting system of the embodiment of the present invention to implement laterite roasting method to be described in detail.According to embodiments of the invention, the method comprises:
S100: calcination process
According to embodiments of the invention, laterite is mixed and carries out calcination process with reductive agent and vulcanizing agent in fluidized-bed or rotary kiln, to obtain product of roasting.According to embodiments of the invention, the composition of laterite is also not particularly limited, and according to a particular embodiment of the invention, laterite can contain the Ni of 0.5～2.0 weight part; The Fe of 35～60 weight parts; The SiO of 8～15 weight parts
2; The Al of 2～8 weight parts
2o
3; The MgO of 0.5～1.5 weight part; The Cu of 0.01～0.5 weight part; And the Co of 0.01～0.2 weight part.It should be noted that, the nickel in above-mentioned laterite, iron, copper and cobalt are to exist with simple substance and compound form.According to embodiments of the invention, the particular type of reductive agent is also not particularly limited, according to a particular embodiment of the invention, laterite is mixed in fluidized-bed with reductive agent and vulcanizing agent and carry out calcination process, to obtain product of roasting, wherein reductive agent can be for being selected from least one in Sweet natural gas, coke-oven gas and producer gas, it should be explained that, coke-oven gas and producer gas all contain carbon monoxide and hydrogen, and Sweet natural gas can generate after cracking is processed that to using carbon monoxide and hydrogen be that main mixed gas is as reducing gas; Laterite is mixed and carries out calcination process with reductive agent and vulcanizing agent in rotary kiln, to obtain product of roasting, wherein reductive agent can be for being selected from least one in coal, coke and blue charcoal.According to embodiments of the invention, the particular type of vulcanizing agent is also not particularly limited, and according to a particular embodiment of the invention, vulcanizing agent can be for being selected from least one in sulphur and pyrite.According to embodiments of the invention, the condition of calcination process is also not particularly limited, and according to a particular embodiment of the invention, calcination process can be carried out 30～90 minutes at the temperature of 600～850 degrees Celsius.In this step, concrete, in laterite, ferro element be take limonite and pyrrhosiderite and is existed as essential mineral form, and nickel, copper, cobalt, silicon, aluminium, calcium and magnesium etc. are all attached in iron-bearing mineral with oxide colloid form, through calcination process, make iron mineral change iron ore concentrate (Fe into
3o
4), nickel, copper, cobalt exist with sulphided form, and silicon, aluminium, calcium and magnesium still exist with oxide form.The chemical equation occurring is as shown in following:
3FeO (OH)+2CO=Fe
3o
4+ 2CO
2and 6FeO (OH)+H
2=2Fe
3o
4+ 4H
2o
NiO+CO=Ni+CO
2and NiO+H
2=Ni+H
2o
CuO+CO=Cu+CO
2and CuO+H
2=Cu+H
2o
CoO+CO=Co+CO
2and CoO+H
2=Co+H
2o
3Ni+2S＝Ni
3S
2
Co+S＝CoS
2Cu+S＝Cu
2S
S200: the first magnetic separation is processed
According to embodiments of the invention, above-mentioned product of roasting is carried out to the first magnetic separation processing, thereby can obtain iron ore concentrate and the first mine tailing.According to embodiments of the invention, the condition that the first magnetic separation is processed is also not particularly limited, and according to a particular embodiment of the invention, the first magnetic separation processing can be carried out under the magneticstrength of 0.05～0.15T.Contriver finds, if magneticstrength is too high, gangue content in gained iron ore concentrate is increased, thereby causes Ni grade to reduce.In this step, concrete, the iron mineral after calcination process changes iron ore concentrate (Fe into
3o
4), nickel, copper, cobalt exist with sulphided form, and silicon, aluminium, calcium and magnesium still exist with oxide form, by the first magnetic separation, process, can so that with the iron ore concentrate of magnetic and nonmagnetic nickel, copper, cobalt sulfide and silicon, aluminium, calcium and magnesium oxides, be able to separated, thereby can separation obtain iron ore concentrate.
Contriver finds, by add vulcanizing agent in calcination process process, can be so that the metallic element such as nickel, copper and cobalt exist with sulphided form in laterite, and then process through magnetic separation, make Armco magnetic iron concentrate be able to separation, thereby can realize the efficient utilization of various metals in ore.
With reference to figure 5, according to the laterite roasting method of the embodiment of the present invention, further comprise:
S300: the first flotation is processed
According to embodiments of the invention, above-mentioned gained the first mine tailing is carried out to the first flotation processing, thereby can obtain respectively sulfide concentrate and the second mine tailing.According to embodiments of the invention, in the first mine tailing, can contain nickel, copper, cobalt sulfide and silicon, aluminium, calcium, magnesium oxide and a small amount of iron ore concentrate.Thus, through flotation, process, can and contain silicon, aluminium, calcium, magnesium oxide mineral and a small amount of iron ore concentrate is able to separated by nickeliferous, copper, cobalt sulfide concentrate.
S400: the second magnetic separation is processed
According to embodiments of the invention, above-mentioned resulting the second mine tailing is carried out to the second magnetic separation processing, thereby can obtain respectively iron ore concentrate and the 3rd mine tailing.According to embodiments of the invention, the condition that the second magnetic separation is processed is also not particularly limited, and according to a particular embodiment of the invention, the second magnetic separation is processed and can under the magneticstrength of 0.08～0.2T, be carried out.According to embodiments of the invention, in the second mine tailing, can contain silicon, aluminium, calcium, magnesium oxide mineral and a small amount of iron ore concentrate.In this step, concrete, iron ore concentrate has magnetic, and contain silicon, aluminium, calcium, magnesium oxide mineral, it is non magnetic ore, through the second magnetic separation, process, can by be with magnetic iron ore concentrate with nonmagnetic contain silicon, aluminium, calcium, magnesium oxide mineral be able to separated, thereby can separation obtain iron ore concentrate.
With reference to figure 6, according to the laterite roasting method of the embodiment of the present invention, further comprise:
S500: the second flotation is processed
According to embodiments of the invention, resulting iron ore concentrate in S200 is carried out to the second flotation processing, thereby can obtain pure iron ore concentrate.Particularly, in magnetic separation treating processes for the first time, utilize, compared with low magnetic field intensity, magnetite is carried out to preliminary election, thereby the iron ore that can avoid excessive field intensity to cause coarse particles to be enclosed with sulphide ores is selected, make iron ore concentrate foreign matter content lower, but unavoidably have sulphide ores and enter iron ore concentrate, utilize thus the second flotation to process and can effectively reduce the sulphide ores foreign matter content in iron ore concentrate, can reclaim the sulphide ores in iron ore concentrate simultaneously.
S600: drying treatment
According to embodiments of the invention, before laterite is carried out to calcination process, laterite is carried out to drying treatment.According to embodiments of the invention, drying mode is also not particularly limited, and according to a particular embodiment of the invention, can adopt pocket type loft drier to be dried or cyclone drying.According to embodiments of the invention, the laterite water content after drying treatment is 5～20wt%.Contriver finds, before laterite is carried out to calcination process, laterite is carried out to drying treatment, can significantly improve follow-up calcination process efficiency.
Below with reference to specific embodiment, present invention is described, it should be noted that, these embodiment are only descriptive, and do not limit the present invention in any way.
Embodiment 1
Composition of ores: Ni0.8%, Fe40%, SiO
28%, Al
2o
32%, MgO1.2%, Cu0.5%, Co0.2%, H
2o40% scaling loss 6.5%.
Auxiliary material: sulphur, flotation reagent.
Technological process: ore is carried out at the temperature of 200 ℃ to drying treatment; remove 35% free-water; then dry ore deposit is crushed to the ore particle that granularity is 0.5～3mm; by charging machine, ore particle is added in fluidized-bed and at 850 ℃ of temperature and carries out reduction-sulfurization roasting; pressure with 6MPa is filled with reducing gas in fluidized-bed; and sulphur steam blast device (charged pressure of sulphur steam is 6MPa) is set in fluidized-bed, roasting product is cooled to room temperature through take coal gas under the reducing atmosphere of protection gas.
Cooling product of roasting is carried out to break process (making the ore particle below 200 orders account for 90%), then adopting wet magnetic separation mode is, under 0.1T, the product of roasting after fragmentation is carried out to the first magnetic separation processing in magnetic separation strength, and the productive rate that obtains iron ore concentrate and the first mine tailing is respectively 70% and 30%; Iron ore concentrate enters flotation flowsheet and carries out selectedly, sorts out secondary iron ore concentrate and sulphide ores, and productive rate is respectively 98% and 2%; The first mine tailing enters flotation flowsheet and sorts sulphide ores, and the productive rate that obtains sulphide concentrate and the second mine tailing is respectively 85% and 15%; Under the condition that is 0.2T in magneticstrength, the second mine tailing is carried out to the second magnetic separation processing, obtain iron ore concentrate and the 3rd mine tailing, productive rate is respectively 55% and 45%.Thus, through two stages of magnetic separation and flotation, can obtain respectively iron ore concentrate and mixed sulfides concentrate.
Embodiment 2
Ore: Ni0.8%, Fe40%, SiO
28%, Al
2o
32%, MgO1.2%, Cu0.5%, Co0.2%, H
2o40% scaling loss 6.5%
Auxiliary material: fine coal, sulphur, flotation reagent
Technological process: ore is carried out at the temperature of 200 ℃ to drying treatment; remove 35% free-water; then dry ore deposit is crushed to the ore particle that granularity is 0.5～3mm; by ore particle with go back raw coal by weight adding and carry out reduction-sulfurization roasting in rotary kiln and at 850 ℃ of temperature by charging machine after mixing for the ratio of 1:0.3; at rotary kiln discharging section, sulphur steam blast device (charged pressure of sulphur steam is 2MPa) is set, roasting product through take coal gas as protection gas reducing atmosphere under be cooled to room temperature.
Cooling product of roasting is carried out to break process (making the ore particle below 200 orders account for 90%), then adopting wet magnetic separation mode is, under 0.1T, the product of roasting after fragmentation is carried out to the first magnetic separation processing in magnetic separation strength, and the productive rate that obtains iron ore concentrate and the first mine tailing is respectively 65% and 35%; Iron ore concentrate enters flotation flowsheet and carries out selectedly, sorts out secondary iron ore concentrate and sulphide ores, and productive rate is respectively 95% and 5%; The first mine tailing enters flotation flowsheet and sorts sulphide ores, and the productive rate that obtains sulphide concentrate and the second mine tailing is respectively 80% and 20%; Under the condition that is 0.2T in magneticstrength, the second mine tailing is carried out to the second magnetic separation processing, obtain iron ore concentrate and the 3rd mine tailing, productive rate is respectively 58% and 42%.Thus, through two stages of magnetic separation and flotation, can obtain respectively iron ore concentrate and mixed sulfides concentrate.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention in the situation that not departing from principle of the present invention and aim, modification, replacement and modification.
Claims (4)
1. a laterite roasting system, is characterized in that, comprising:
Calciner, described calciner is suitable for laterite mix therein and carry out calcination process with reductive agent and vulcanizing agent, to obtain product of roasting; And
The first concentration equipment, described the first concentration equipment is connected with described calciner, and is suitable for described product of roasting to carry out the first magnetic separation processing, to obtain respectively iron ore concentrate and the first mine tailing.
2. laterite roasting system according to claim 1, is characterized in that, described calciner is fluidized-bed or rotary kiln.
3. laterite roasting system according to claim 1, is characterized in that, further comprises:
The first flotation unit, described the first flotation unit is connected with described the first concentration equipment, and is suitable for described the first mine tailing to carry out the first flotation processing, to obtain respectively sulfide concentrate and the second mine tailing; And
The second concentration equipment, described the second concentration equipment is connected with described the first flotation unit, and is suitable for described the second mine tailing to carry out the second magnetic separation processing, to obtain respectively iron ore concentrate and the 3rd mine tailing.
4. laterite roasting system according to claim 1, is characterized in that, further comprises:
The second flotation unit, described the second flotation unit is connected with described the first concentration equipment, and is suitable for described iron ore concentrate to carry out the second flotation processing; And
Drying installation, described drying installation is connected with described calciner, and is suitable for, before described calcination process, described laterite is carried out to drying treatment.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108796222A (en) * | 2018-06-11 | 2018-11-13 | 广东省资源综合利用研究所 | A kind of harmless resource method of industrial sludge containing cupro-nickel |
| CN114606395A (en) * | 2022-03-11 | 2022-06-10 | 中南大学 | Method for realizing efficient selective smelting of products from laterite-nickel ore |
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