CN205128167U - Red mud selects iron group to close equipment - Google Patents
Red mud selects iron group to close equipment Download PDFInfo
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- CN205128167U CN205128167U CN201520861182.1U CN201520861182U CN205128167U CN 205128167 U CN205128167 U CN 205128167U CN 201520861182 U CN201520861182 U CN 201520861182U CN 205128167 U CN205128167 U CN 205128167U
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Abstract
The utility model provides a red mud selects iron group to close equipment, relates to metallurgy (b) ore dressing (b) field, in particular to red mud selects iron group to close equipment, the access point setting of selecting the red mud iron is washd the outer red mud that comes of discharging of subsider with the end and is cuted after time washing of end, through the one thick one single -minded combination treatment of plants of sweeping, has increased the rate of recovery of metallic iron in the red mud.
Description
Technical field
The utility model relates to metallurgy
ore dressingfield, particularly a kind of red mud selects iron unit equipment.
Background technology
Red mud is that the superfine strong basicity solid waste of particle produced in alumina process produced by raw material with bauxite, often produces 1 ton of aluminium oxide, approximately produce red mud 1.5 tons.Current China red mud comprehensive utilization ratio is only 4%, and accumulation volume of cargo in storage is more than 2.5 hundred million tons.Along with the reduction gradually of growth and the bauxite grade year by year of China's aluminium oxide output, the year generation of red mud also will constantly increase.Red mud is stored up in a large number, both land occupation, and waste resource, easily causes environmental pollution and potential safety hazard again.
How China carries out comprehensive utilization to red mud and has carried out large quantifier elimination, and the technology having dropped into suitability for industrialized production at present mainly red mud selects iron, namely adopts the method for magnetic separation to reclaim the iron in red mud and iron oxide.Red mud selects iron technology to be applied at Pingguo alumina producer, magnificent silver-colored alumina producer, Shandong Aluminum Plant, a Chiping letter Aluminum, Shandong Wei Qiao Aluminum; The red mud iron selection process flow that it adopts is as Fig. 1.
Red mud slurry is extracted out from second from the bottom sedimentation sink and enters magnetic separation workshop, then adopt the hot water of alumina producer hot water station to carry out admittedly selecting flowing molten iron journey containing what be formulated to that suitable concn enters a thick essence again, select the red mud slurry after iron to turn back to three wash water power mixing channels again and enter into last sedimentation sink.
There is following defect in this iron separation technological flowsheet: (1) all adopts the hot water of hot water station admittedly because of red mud containing the flushing water of allotment water and thick magnetic separator, the temperature of hot water and red mud slip is at 85-90 DEG C, and magnetic separator is outdoor uncovered equipment, the mine tailing slurry temperature returned to after selecting iron is lower than former red mud slurry temperature 8 DEG C-10 DEG C, temperature loss is large, adds hydrolysis and the steam energy consumption of aluminium oxide in red-mud settlement washing process; (2) in magnetic separation process, slurry temperature reduces, and the aluminium oxide in red mud slip is separated out, causes magnetic separator to scab seriously, affect equipment performance and life-span, increases the cost cleaning and scab; (3) during magnetic separation, the solid of red mud slip contains the concentration needing a large amount of water to be diluted to 15%-25%, dilution water in above technique adopts the hot water of hot water station, cause the restriction being vulnerable to the alumina producer hot water station water yield by the water capacity of whole magnetic separation workshop section, when the hot water station water yield is inadequate, red mud slip can not be diluted to and correspondingly admittedly to contain, and causes efficiency of magnetic separation to reduce.
Utility model content
For above problem, the utility model proposes a kind of red mud and select iron unit equipment, not only avoid the defect of above flow process, select in iron base simultaneously in a former thick essence, devise cleaner tailings and scan flow process, add the rate of recovery of metallic iron in red mud.
The utility model is achieved in that
A kind of red mud selects iron unit equipment, and this red mud selects iron unit equipment to comprise every ballast screen, permanent magnetic motor, high gradient magnetic separator, concentrator, filter press, tank diameter; Red mud is selected after the access point of iron is arranged on final wash, end is washed the red mud ejected outside washing settling groove to block, be transported to magnetic separation workshop, red mud solids in pulp, as adjustment red mud solids in pulp water, is adjusted to 150g/l-400g/l by following cycle and the dense overflowing liquid of mine tailing that comes in tank diameter 1; Red mud pulp flow is through removing coarse granule and iron filings respectively every ballast screen 2 and permanent magnetic motor 3, red mud slip flows in high gradient magnetic separator A4 again and carries out magnetic separation, the mine tailing of high gradient magnetic separator A4 enters in concentrator A7, and the underflow of concentrator A7 enters red mud filter pressing workshop by throwing tail after filter press A8 filter-press dehydration; The overflow of concentrator A7 turns back to tank diameter 1 as red mud solids in pulp adjustment water and be back to as flushing water in ballast screen 2 and high gradient magnetic separator A4, forms a closed water circulation system with this; The concentrate of high gradient magnetic separator A4 enters into high gradient magnetic separator B6, the concentrate of high gradient magnetic separator B6 enters in concentrator B9, the concentrate of concentrator B9 enters concentrate press filtration workshop by obtaining iron ore concentrate after filter press B10 press filtration, the overflowing liquid of concentrator B9 turns back to as flushing water in high gradient magnetic separator B6 and permanent magnetic motor 3, forms another closed water circulation system with this; The mine tailing of high gradient magnetic separator B6 enters into high gradient magnetic separator C5, and the concentrate of high gradient magnetic separator C5 is got back in concentrator B9, and mine tailing is then got back in concentrator A7.
Further: described tank diameter 1 is the cylindrical steel cell body that band stirs; Described concentrator A7, concentrator B9 are band cone end concentrator; Described filter press A8, filter press B10 are plate and frame filter press.
Further: described aperture≤0.5mm every ballast screen 2; Magnetic field intensity≤the 0.3T of described permanent magnetic motor 3; Magnetic separation strength≤the 2T of the magnetic separation strength≤2T of the magnetic separation strength≤2T of described high gradient magnetic separator A4, high gradient magnetic separator B6, high gradient magnetic separator C5.
advantageous Effects
1, there are two water self-circulation systems in the utility model: overflowing liquid when being Tailing thickening is as red mud admittedly containing adjustment water and the wash water every ballast screen, the thick magnetic separator of high gradient, and another is the wash water of the overflowing liquid of concentrate when concentrating as high gradient essence magnetic separator.These two circulations are all independently, do not interfere with each other, and have and utilize the tissue on producing and model for water quantity allocation.
2, the mine tailing underflow in the utility model after mine tailing concentrator is dense is stored up after going to press filtration workshop to carry out tailings characteristic, no longer returning alumina factory red-mud settlement sink, therefore the decline of temperature can not be caused to the slip in red-mud settlement workshop, reduce heat-energy losses, 10000Kcal/t-red mud slip can be about by saving heat energy.
3, in the utility model, the access point of red mud slip is selected after final wash, because final wash red mud slurry temperature is not high about 65 DEG C, in solution, alumina hydrolysis loss is little, scabbing of magnetic plant greatly reduces, the equipment cleaning frequency can once extend to cleaning in about 1 year once by cleaning in original 1-2 month, substantially increases the running efficiency of equipment.
4, add cleaner tailings in the utility model flow process and scan link, the rate of recovery increasing iron in red mud after scanning link improves about 3%-5% than not increasing the rate of recovery of scanning link iron.
Metal Ferrum content TFe19.7% in mountain of papers red mud for alumina plant, the iron ore concentrate selected after adopting unit equipment of the present utility model after testing composition is as follows: TFe56.23%, Al2O35.23%, SiO23.04%, P2O50.028%, S0.028%, As0.0087%, attached water 16%.In red mud, the rate of recovery of metallic iron is 33%, reaches domestically leading level.
Accompanying drawing explanation
Fig. 1 is the red mud iron selection technique flow chart of prior art;
Fig. 2 is that red mud of the present utility model selects iron equipment constitutional diagram.
In figure, 1-tank diameter, 2-every ballast screen, 3-permanent magnetic motor, 4-high gradient magnetic separator A, 5-high gradient magnetic separator C, 6-high gradient magnetic separator B, 7-concentrator A, 8-filter press A, 9-concentrator B, 10-filter press B.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further, to facilitate the technical staff to understand.
Embodiment 1: as shown in Figure 2, a kind of red mud selects iron unit equipment, and this red mud selects iron unit equipment to comprise every ballast screen, permanent magnetic motor, high gradient magnetic separator, concentrator, filter press, tank diameter; Red mud is selected after the access point of iron is arranged on final wash, end is washed the red mud ejected outside washing settling groove to block, be transported to magnetic separation workshop, red mud solids in pulp, as adjustment red mud solids in pulp water, is adjusted to 150g/l by following cycle and the dense overflowing liquid of mine tailing that comes in tank diameter 1; Red mud pulp flow, through removing coarse granule and iron filings respectively every ballast screen 2 and permanent magnetic motor 3, is 0.1mm every the aperture of ballast screen 2; The magnetic field intensity of described permanent magnetic motor 3 is 0.1T; Red mud slip flows in high gradient magnetic separator A4 again and carries out magnetic separation, and magnetic separation strength is 1T, and the mine tailing of high gradient magnetic separator A4 enters in concentrator A7, and the underflow of concentrator A7 enters red mud filter pressing workshop by throwing tail after filter press A8 filter-press dehydration; The overflow of concentrator A7 turns back to tank diameter 1 as red mud solids in pulp adjustment water and be back to as flushing water in ballast screen 2 and high gradient magnetic separator A4, forms a closed water circulation system with this; The concentrate of high gradient magnetic separator A4 enters into high gradient magnetic separator B6, magnetic separation strength is 1.2T, the concentrate of high gradient magnetic separator B6 enters in concentrator B9, the concentrate of concentrator B9 enters concentrate press filtration workshop by obtaining iron ore concentrate after filter press B10 press filtration, the overflowing liquid of concentrator B9 turns back to as flushing water in high gradient magnetic separator B6 and permanent magnetic motor 3, forms another closed water circulation system with this; The mine tailing of high gradient magnetic separator B6 enters into high gradient magnetic separator C5, and magnetic separation strength is 2T, and the concentrate of high gradient magnetic separator C5 is got back in concentrator B9, and mine tailing is then got back in concentrator A7.
Embodiment 2: as shown in Figure 2, a kind of red mud selects iron unit equipment, and this red mud selects iron unit equipment to comprise every ballast screen, permanent magnetic motor, high gradient magnetic separator, concentrator, filter press, tank diameter; Red mud is selected after the access point of iron is arranged on final wash, end is washed the red mud ejected outside washing settling groove to block, be transported to magnetic separation workshop, red mud solids in pulp, as adjustment red mud solids in pulp water, is adjusted to 400g/l by following cycle and the dense overflowing liquid of mine tailing that comes in tank diameter 1; Red mud pulp flow, through removing coarse granule and iron filings respectively every ballast screen 2 and permanent magnetic motor 3, is 0.5mm every the aperture of ballast screen 2; The magnetic field intensity of described permanent magnetic motor 3 is 0.3T; Red mud slip flows in high gradient magnetic separator A4 again and carries out magnetic separation, and magnetic separation strength is 2T, and the mine tailing of high gradient magnetic separator A4 enters in concentrator A7, and the underflow of concentrator A7 enters red mud filter pressing workshop by throwing tail after filter press A8 filter-press dehydration; The overflow of concentrator A7 turns back to tank diameter 1 as red mud solids in pulp adjustment water and be back to as flushing water in ballast screen 2 and high gradient magnetic separator A4, forms a closed water circulation system with this; The concentrate of high gradient magnetic separator A4 enters into high gradient magnetic separator B6, magnetic separation strength is 2T, the concentrate of high gradient magnetic separator B6 enters in concentrator B9, the concentrate of concentrator B9 enters concentrate press filtration workshop by obtaining iron ore concentrate after filter press B10 press filtration, the overflowing liquid of concentrator B9 turns back to as flushing water in high gradient magnetic separator B6 and permanent magnetic motor 3, forms another closed water circulation system with this; The mine tailing of high gradient magnetic separator B6 enters into high gradient magnetic separator C5, and magnetic separation strength is 1.8T, and the concentrate of high gradient magnetic separator C5 is got back in concentrator B9, and mine tailing is then got back in concentrator A7.
Embodiment 3: as shown in Figure 2, a kind of red mud selects iron unit equipment, and this red mud selects iron unit equipment to comprise every ballast screen, permanent magnetic motor, high gradient magnetic separator, concentrator, filter press, tank diameter; Red mud is selected after the access point of iron is arranged on final wash, end is washed the red mud ejected outside washing settling groove to block, be transported to magnetic separation workshop, red mud solids in pulp, as adjustment red mud solids in pulp water, is adjusted to 300g/l by following cycle and the dense overflowing liquid of mine tailing that comes in tank diameter 1; Red mud pulp flow, through removing coarse granule and iron filings respectively every ballast screen 2 and permanent magnetic motor 3, is 0.4mm every the aperture of ballast screen 2; The magnetic field intensity of described permanent magnetic motor 3 is 0.2T; Red mud slip flows in high gradient magnetic separator A4 again and carries out magnetic separation, and magnetic separation strength is 2T, and the mine tailing of high gradient magnetic separator A4 enters in concentrator A7, and the underflow of concentrator A7 enters red mud filter pressing workshop by throwing tail after filter press A8 filter-press dehydration; The overflow of concentrator A7 turns back to tank diameter 1 as red mud solids in pulp adjustment water and be back to as flushing water in ballast screen 2 and high gradient magnetic separator A4, forms a closed water circulation system with this; The concentrate of high gradient magnetic separator A4 enters into high gradient magnetic separator B6, magnetic separation strength is 1.8T, the concentrate of high gradient magnetic separator B6 enters in concentrator B9, the concentrate of concentrator B9 enters concentrate press filtration workshop by obtaining iron ore concentrate after filter press B10 press filtration, the overflowing liquid of concentrator B9 turns back to as flushing water in high gradient magnetic separator B6 and permanent magnetic motor 3, forms another closed water circulation system with this; The mine tailing of high gradient magnetic separator B6 enters into high gradient magnetic separator C5, and magnetic separation strength is 1.8T, and the concentrate of high gradient magnetic separator C5 is got back in concentrator B9, and mine tailing is then got back in concentrator A7.
Embodiment 4: as shown in Figure 2, the tank diameter 1 described in any example of embodiment 1-3 is the cylindrical steel cell body that band stirs; Described concentrator A7, concentrator B9 are band cone end concentrator; Described filter press A8, filter press B10 are plate and frame filter press; Remainder is all identical.
When not departing from the utility model scope, various conversion and equivalent replacement can also be carried out to utility model, therefore, the utility model utility model patent is not limited to disclosed specific implementation process, and should comprise the whole embodiments fallen in the utility model utility model right claimed range.
Claims (3)
1. red mud selects an iron unit equipment, it is characterized in that, this red mud select iron unit equipment comprise every ballast screen, permanent magnetic motor, high gradient magnetic separator,
concentrator, filter press, tank diameter; Red mud is selected after the access point of iron is arranged on final wash, end is washed the red mud ejected outside washing settling groove and block, be transported to magnetic separation workshop, following cycle and the dense overflowing liquid of the mine tailing that comes as adjustment red mud solids in pulp water, by red mud solids in pulp
in tank diameter (1)be adjusted to 150g/l-400g/l; Red mud pulp flow is through removing coarse granule and iron filings respectively every ballast screen (2) and permanent magnetic motor (3), and red mud slip flows into high gradient magnetic separator A(4 again) in carry out magnetic separation, high gradient magnetic separator A(4) mine tailing enter
concentratora(7) in,
concentratora(7) underflow enters red mud filter pressing workshop to be passed through
filter press A(8)tail is thrown after filter-press dehydration;
concentratora(7) overflow turns back to
tank diameter (1) conductred mud solids in pulp adjustment water and be back to every ballast screen (2) and high gradient magnetic separator A(4) in as flushing water, form a closed water circulation system with this; High gradient magnetic separator A(4) concentrate enter into high gradient magnetic separator B(6), high gradient magnetic separator B(6) concentrate enter
concentratorb(9) in,
concentratorb(9) concentrate enters concentrate press filtration workshop to be passed through
filter press B(10)iron ore concentrate is obtained after press filtration,
concentratorb(9) overflowing liquid turns back to high gradient magnetic separator B(6) and permanent magnetic motor (3) in as flushing water, form another closed water circulation system with this; High gradient magnetic separator B(6) mine tailing enter into high gradient magnetic separator C(5), high gradient magnetic separator C(5) concentrate get back to
concentratorb(9), in, mine tailing is then got back to
concentratora(7) in.
2. a kind of red mud according to claim 1 selects iron unit equipment, it is characterized in that, described
tank diameter (1) is the cylindrical steel cell body that band stirs; Described concentratora(7),
concentratorb(9) be
band cone end concentrator; Described filter press A(8), filter press B(10) be plate and frame filter press.
3. a kind of red mud according to claims 1 or 2 any one selects iron unit equipment, it is characterized in that, described aperture≤0.5mm every ballast screen (2); Magnetic field intensity≤the 0.3T of described permanent magnetic motor (3); Described high gradient magnetic separator A(4) magnetic separation strength≤2T, high gradient magnetic separator B(6) magnetic separation strength≤2T, high gradient magnetic separator C(5) magnetic separation strength≤2T.
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| CN201520861182.1U CN205128167U (en) | 2015-11-02 | 2015-11-02 | Red mud selects iron group to close equipment |
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| CN201520861182.1U CN205128167U (en) | 2015-11-02 | 2015-11-02 | Red mud selects iron group to close equipment |
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| CN205128167U true CN205128167U (en) | 2016-04-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604044A (en) * | 2018-12-20 | 2019-04-12 | 中铝国际工程股份有限公司 | A kind of red mud iron selection technique |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604044A (en) * | 2018-12-20 | 2019-04-12 | 中铝国际工程股份有限公司 | A kind of red mud iron selection technique |
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