CN104785356A - Method and system for processing leaching residues of zinc hydrometallurgy - Google Patents
Method and system for processing leaching residues of zinc hydrometallurgy Download PDFInfo
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- CN104785356A CN104785356A CN201510136742.1A CN201510136742A CN104785356A CN 104785356 A CN104785356 A CN 104785356A CN 201510136742 A CN201510136742 A CN 201510136742A CN 104785356 A CN104785356 A CN 104785356A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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Abstract
The invention discloses a method and system for processing leaching residues of zinc hydrometallurgy. The method comprises the steps that 1, desulfuration processing is conducted on the leaching residues, so that sulfur concentrate and desulfuration residues are obtained; 2, washing is conducted on the mixed desulfuration residues and water, and washed pulp is obtained; 3, the washed pulp and water are further mixed and then subjected to first size mixing, and hydrometallurgy residue size is obtained; 4, the hydrometallurgy residue size, sodium sulfide, collecting agents and foaming agents are mixed and subjected to first chemical pharmacy, and chemical pulp is obtained; 5, the chemical pulp is subjected to first flotation processing, and tailings and secondary concentrate with lead oxide are obtained. The method can remarkably lower the leaching residue processing cost, and can maximize the recovery of valuable metal in the leaching residues.
Description
Technical field
The invention belongs to environmental technology field, specifically, the present invention relates to a kind of method and system processing zinc hydrometallurgy leached mud.
Background technology
Current, wet processing, thermal process, floatation process, selecting smelting combination technique etc. are mainly contained to the technique of zinc hydrometallurgy leaching residue treating.In actual production process, process conditions harshness, refractory consumption rate are large, equipment investment and the shortcoming such as maintenance cost is high, poor working environment, energy consumption are high to adopt thermal process or wet processing all to exist; In addition, be difficult to reclaim according to valuable metal in single floatation process then slag, waste residue secondary utilizing status is undesirable.
Therefore, the existing technology to zinc hydrometallurgy leaching residue treating is further improved.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is to propose a kind of method and system processing zinc hydrometallurgy leached mud, and the method, while the processing cost significantly reducing leached mud, can realize the maximization that in leached mud, valuable metal recovery utilizes.
In one aspect of the invention, the present invention proposes a kind of method processing zinc hydrometallurgy leached mud, comprising:
(1) described leached mud is carried out desulfurization process, to obtain iron concentrate and desulfurization slag;
(2) described desulfurization slag is mixed with water carry out washing and process, obtain washing ore pulp;
(3) described washing ore pulp is mixed with water carry out first and size mixing, to obtain hydrometallurgy dreg slurry;
(4) described hydrometallurgy dreg slurry is mixed with vulcanized sodium, collecting agent and foaming agent carry out the first medicine, to obtain the ore pulp of medicine; And
(5) ore pulp after described medicine is carried out the first flotation process, to obtain tailings and the secondary concentrate containing lead oxide.
Under can realizing normal condition according to the method for the process zinc hydrometallurgy leached mud of the embodiment of the present invention, the secondary of zinc hydrometallurgy leached mud is utilized, comparatively traditional handicraft is compared, can significantly reduce equipment investment, maintenance cost and energy consumption, thus significantly reduce leaching residue treating cost, simultaneously by adopting washing and flotation combined technique, the maximization that in leached mud, valuable metal recovery utilizes can be realized, thus establish solid foundation for the harmless treatment of zinc hydrometallurgy leached mud, in addition, the method obviously can improve working environment, and waste residue minimizing is obvious.
In addition, the method for process zinc hydrometallurgy leached mud according to the above embodiment of the present invention can also have following additional technical characteristic:
In some embodiments of the invention, step (1) is carried out according to the following step: described leached mud mixes with water and carries out second and size mixing, to obtain leached mud slurries by (1-1); (1-2) described leached mud slurries and collecting agent and foaming agent are carried out the second medicine, to obtain the slurries after medicine; (1-3) slurries after described medicine are carried out the second flotation, to obtain iron concentrate and desulfurization slag.Thus, while significantly reducing leaching residue treating cost, improve the desulfuration efficiency of leached mud.
In some embodiments of the invention, the method of described process zinc hydrometallurgy leached mud comprises further: (6) carry out before washing processes described desulfurization slag being mixed with water, in advance described desulfurization slag is carried out the first press filtration process, to obtain the first filtrate and the first filter residue, and described first filtrate returning is carried out described second flotation.Thus, leaching residue treating cost can be reduced further.
In some embodiments of the invention, the method of described process zinc hydrometallurgy leached mud comprises further: (7) described washing ore pulp is mixed with water carry out first size mixing before, in advance described washing ore pulp is carried out the second press filtration process, to obtain the second filtrate and the second filter residue, and described second filtrate returning is carried out described second flotation.Thus, leaching residue treating cost can be reduced further.
In some embodiments of the invention, the method of described process zinc hydrometallurgy leached mud comprises further: the described secondary concentrate containing lead oxide is carried out the 3rd press filtration process by (8), to obtain the 3rd filtrate and the 3rd filter residue, and described 3rd filtrate returning is carried out described second flotation; (9) described iron concentrate is carried out the 4th press filtration process, to obtain the 4th filtrate and the 4th filter residue, and described 4th filtrate returning is carried out described second flotation; And (10) by described 4th filter residue for the preparation of sulfuric acid.Thus, while the processing cost significantly reducing leached mud, the maximization that in leached mud, element sulphur is recycled can be realized.
In some embodiments of the invention, the method of described process zinc hydrometallurgy leached mud comprises further: described tailings is carried out the 5th press filtration process by (11), to obtain the 5th filtrate and the 5th filter residue, and described 5th filtrate returning is carried out described second flotation.Thus, leaching residue treating cost can be reduced further.
In some embodiments of the invention, in step (1), the grade of described iron concentrate is not less than 65%.Thus, the maximization that in leached mud, element sulphur is recycled can be realized further.
In some embodiments of the invention, in step (2), being that 1:3 ~ 5 mix and carry out described washing and process by described desulfurization slag and water according to solid-to-liquid ratio, in step (3), is that 1:2 ~ 4 mix and carry out described first and size mixing by described washing ore pulp and water according to solid-to-liquid ratio.Thus, leaching residue treating cost can be reduced further.
In some embodiments of the invention, in step (4), based on described hydrometallurgy dreg slurry per ton, the consumption of described vulcanized sodium is 5000 ~ 10000 grams, the consumption of described collecting agent is 250 ~ 500 grams, the consumption of described foaming agent is 10 ~ 50 grams, and in step (5), the described secondary concentrate grade containing lead oxide is not less than 20%.Thus, leaching residue treating cost can be reduced further.
In some embodiments of the invention, in step (11), content plumbous in described 5th filter residue is not higher than 4.20wt%, and the content of zinc is not higher than 3.00wt%, and the content of sulphur is not higher than 10.00wt%.Thus, while the processing cost significantly reducing leached mud, the maximization that in leached mud, valuable metal recovery utilizes can be realized.
In another aspect of the present invention, the present invention proposes a kind of system processing zinc hydrometallurgy leached mud, comprising:
Desulfurizer, described desulfurizer is suitable for described leached mud to carry out desulfurization process, to obtain iron concentrate and desulfurization slag;
Water washing device, described water washing device is connected with described desulfurizer, and is suitable for described desulfurization slag to mix with water and carries out washing and process, and obtains washing ore pulp;
First size mixing device, described first size mixing device is connected with described water washing device, and is suitable for described washing ore pulp to mix with water and carries out first and size mixing, to obtain hydrometallurgy dreg slurry;
First medicine gasifying device, described first medicine gasifying device is connected with described first size mixing device, and is suitable for described hydrometallurgy dreg slurry to mix with vulcanized sodium, collecting agent and foaming agent to carry out the first medicine, to obtain the ore pulp of medicine; And
First flotation unit, described first flotation unit is connected with described first medicine gasifying device, and is suitable for the ore pulp after by described medicine and carries out the first flotation process, to obtain tailings and the secondary concentrate containing lead oxide.
Under can realizing normal condition according to the system of the zinc hydrometallurgy leached mud of the embodiment of the present invention, the secondary of zinc hydrometallurgy leached mud is utilized, comparatively legacy equipment is compared, can significantly reduce equipment investment, maintenance cost and energy consumption, thus significantly reduce leaching residue treating cost, simultaneously by adopting washing and flotation combined technique, the maximization that in leached mud, valuable metal recovery utilizes can be realized, thus establish solid foundation for the harmless treatment of zinc hydrometallurgy leached mud, in addition, adopt this equipment obviously can improve working environment, and waste residue minimizing is obvious.
In addition, the system of process zinc hydrometallurgy leached mud according to the above embodiment of the present invention can also have following additional technical characteristic:
In some embodiments of the invention, described vulcanization plant comprises: second sizes mixing unit, and the described second unit of sizing mixing is suitable for described leached mud to mix with water and carries out second and size mixing, to obtain leached mud slurries; Second medicine unit, described second medicine unit and described second unit of sizing mixing is connected, and is suitable for described leached mud slurries and collecting agent and foaming agent to carry out medicine, to obtain the slurries after medicine; Second flotation cells, described second flotation cells is connected with described second medicine unit, and is suitable for the slurries after by described medicine and carries out the second flotation, to obtain iron concentrate and desulfurization slag.Thus, while significantly reducing leaching residue treating cost, improve the desulfuration efficiency of leached mud.
In some embodiments of the invention, the system of described process zinc hydrometallurgy leached mud comprises further: the first filter-pressing device, described first filter-pressing device is connected with described desulfurizer, and be suitable for carrying out before washing processes described desulfurization slag is mixed with water, in advance described desulfurization slag is carried out the first press filtration process, to obtain the first filtrate and the first filter residue, and described first filtrate is back to described second flotation cells.Thus, leaching residue treating cost can be reduced further.
In some embodiments of the invention, the system of described process zinc hydrometallurgy leached mud comprises further: the second filter-pressing device, described second filter-pressing device is connected with described washing unit with described water washing device respectively, and be suitable for described washing ore pulp is mixed with water carry out first size mixing before, in advance described washing ore pulp is carried out the second press filtration process, to obtain the second filtrate and the second filter residue, and described second filtrate is back to described second flotation cells.Thus, leaching residue treating cost can be reduced further.
In some embodiments of the invention, the system of described process zinc hydrometallurgy leached mud comprises further: the 3rd filter-pressing device, described 3rd filter-pressing device is connected with the second flotation cells with described first flotation unit respectively, and be suitable for the described secondary concentrate containing lead oxide to carry out the 3rd press filtration process, to obtain the 3rd filtrate and the 3rd filter residue, and described 3rd filtrate is back to described second flotation cells; 4th filter-pressing device, described 4th filter-pressing device is connected with described desulfurizer, and is suitable for described iron concentrate to carry out the 4th press filtration process, to obtain the 4th filtrate and the 4th filter residue, and described 4th filtrate is back to described second flotation cells; And sulphuric acid plant, described sulphuric acid plant is connected with described 4th filter-pressing device, and is suitable for described 4th filter residue for the preparation of sulfuric acid.Thus, while the processing cost significantly reducing leached mud, the maximization that in leached mud, element sulphur is recycled can be realized.
In some embodiments of the invention, the system of described process zinc hydrometallurgy leached mud comprises further: the 5th filter-pressing device, described 5th filter-pressing device is connected with the second flotation cells with described first flotation unit respectively, and be suitable for described tailings to carry out the 5th press filtration process, to obtain the 5th filtrate and the 5th filter residue, and described 5th filtrate is back to described second flotation cells.Thus, leaching residue treating cost can be reduced further.
In some embodiments of the invention, the grade of described iron concentrate is not less than 65%, and the described secondary concentrate grade containing lead oxide is not less than 20%.Thus, the maximization that in leached mud, valuable element is recycled can be realized further.
In some embodiments of the invention, being that 1:3 ~ 5 mix and carry out described washing and process by described desulfurization slag and water according to solid-to-liquid ratio, is that 1:2 ~ 4 mix and carry out described first and size mixing by described washing ore pulp and water according to solid-to-liquid ratio.Thus, leaching residue treating cost can be reduced further.
In some embodiments of the invention, based on described hydrometallurgy dreg slurry per ton, the consumption of described vulcanized sodium is 5000 ~ 10000 grams, and the consumption of described collecting agent is 250 ~ 500 grams, and the consumption of described foaming agent is 10 ~ 50 grams.Thus, leaching residue treating cost can be reduced further.
In some embodiments of the invention, content plumbous in described 5th filter residue is not higher than 4.20wt%, and the content of zinc is not higher than 3.00wt%, and the content of sulphur is not higher than 10.00wt%.Thus, while the processing cost significantly reducing leached mud, the maximization that in leached mud, valuable metal recovery utilizes can be realized.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Fig. 1 is the method flow schematic diagram processing zinc hydrometallurgy leached mud according to an embodiment of the invention;
Fig. 2 is the method flow schematic diagram of the process zinc hydrometallurgy leached mud according to another embodiment of the present invention;
Fig. 3 is the system architecture schematic diagram processing zinc hydrometallurgy leached mud according to an embodiment of the invention;
Fig. 4 is the system architecture schematic diagram of the process zinc hydrometallurgy leached mud according to another embodiment of the present invention.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In one aspect of the invention, the present invention proposes a kind of method processing zinc hydrometallurgy leached mud.According to embodiments of the invention, the zinc containing 3.75wt% in zinc hydrometallurgy leached mud, the water zinc of 1.13wt%, the lead of 9.79wt%, the silver of 17.68 grams/ton, the iron of 10.40wt%.Below with reference to Fig. 1-2, the method for the process zinc hydrometallurgy leached mud of the embodiment of the present invention is described in detail.According to embodiments of the invention, the method comprises:
S100: leached mud is carried out desulfurization process
According to embodiments of the invention, leached mud is carried out desulfurization process, thus iron concentrate and desulfurization slag can be obtained.Be described in detail the step of desulfurization process below with reference to Fig. 2: according to embodiments of the invention, desulfurization process comprises:
S110: leached mud is mixed with water and carries out second and size mixing
According to embodiments of the invention, leached mud is mixed with water and carries out second and size mixing, thus leached mud slurries can be obtained.
According to embodiments of the invention, leached mud and water mixed proportion are also not particularly limited, and according to a particular embodiment of the invention, leached mud and water can be that 1:2 ~ 4 mix and size mixing according to solid-to-liquid ratio.Inventor finds, if solid-to-liquid ratio is too high, adjusting slurry will overrich, and then the effect that causes sizing mixing is undesirable, affects subsequent job, and if solid-to-liquid ratio is too low, then make subsequent treatment amount reduce, cause unit cost to rise, thus make overall processing cost increase.
S120: leached mud slurries are mixed with collecting agent and foaming agent and carries out medicine
According to embodiments of the invention, the leached mud slurries obtained are mixed with collecting agent and foaming agent and carries out medicine, thus the slurries after medicine can be obtained.
According to embodiments of the invention, leached mud slurries and collecting agent and foaming agent mixed proportion are also not particularly limited, and according to a particular embodiment of the invention, leached mud slurries and collecting agent and foaming agent can be that 5000:2:1 mixes and carries out medicine according to mass ratio.Inventor finds, if quantity of slag ratio is too high, then medicine effect is inadequate, does not play medicine and turns use into, and if quantity of slag ratio is too low, reagent cost will significantly rise, and then causes processing cost to raise, and is unfavorable for popularization of the present invention.
According to embodiments of the invention, collecting agent can be sodium n-butyl xanthate, and foaming agent can be terpenic oil.
S130: the slurries after medicine are carried out the second flotation
According to embodiments of the invention, the slurries after medicine are carried out the second flotation, thus iron concentrate and desulfurization slag can be obtained.Thus, while reducing leaching residue treating cost, significantly improve the desulfuration efficiency of leached mud.
According to embodiments of the invention, the grade of iron concentrate is not less than 65%, and the rate of recovery of sulphur is not less than 75%.Thus, the maximization that in leached mud, element sulphur is recycled can be realized further.
S200: desulfurization slag is mixed with water and carries out washing and process
According to embodiments of the invention, desulfurization slag is mixed with water and carries out washing and process, thus can obtain washing ore pulp.Thus, the objectionable impurities calcium in desulfurization slag, magnesium, iron, arsenic, antimony, cadmium, the isoionic interference of nickel can effectively be removed.
According to embodiments of the invention, desulfurization slag and water mixed proportion are also not particularly limited, and according to a particular embodiment of the invention, desulfurization slag and water can be that 1:3 ~ 5 mix and carry out washing and process according to solid-to-liquid ratio.Inventor find, if solid-to-liquid ratio is too high, water washing effect is undesirable, and brings negative effect to subsequent job, and if solid-to-liquid ratio is too low, water unit consumption will be caused to rise, and then whole processing cost is gone up.
S300: washing ore pulp is mixed with water and carries out first and size mixing
According to embodiments of the invention, washing ore pulp is mixed with water and carries out first and size mixing, thus hydrometallurgy dreg slurry can be obtained.Thus, leaching residue treating cost can be reduced further.
According to embodiments of the invention, the mixed proportion of washing ore pulp and water is also not particularly limited, and according to a particular embodiment of the invention, washing ore pulp and water can be that 1:2 ~ 4 mix and carry out first and size mixing according to solid-to-liquid ratio.Inventor finds, if solid-to-liquid ratio is too high, adjusting slurry will overrich, and then the effect that causes sizing mixing is undesirable, affect subsequent job, and if solid-to-liquid ratio is too low, then treating capacity reduces, unit cost rising, causes overall processing cost increase.
S400: hydrometallurgy dreg slurry is mixed with vulcanized sodium, collecting agent and foaming agent and carries out the first medicine
According to embodiments of the invention, obtained hydrometallurgy dreg slurry is mixed with vulcanized sodium, collecting agent and foaming agent and carries out the first medicine, thus the ore pulp of medicine can be obtained.
According to embodiments of the invention, hydrometallurgy dreg slurry and vulcanized sodium, collecting agent and foaming agent mixed proportion are also not particularly limited, according to a particular embodiment of the invention, based on hydrometallurgy dreg slurry per ton, the consumption of vulcanized sodium can be 5000 ~ 10000 grams, the consumption of collecting agent can be 250 ~ 500 grams, and the consumption of foaming agent can be 10 ~ 50 grams.Inventor finds, if amount of sodium sulfide is too high, lead oxide metal sulfuration in slag can be made excessive and suppressed, be unfavorable for reclaiming, if collecting agent and frother dosages are crossed, to make medicament lose at most selective, the plumbous grade of impact time concentrate, cause the waste of reagent cost simultaneously, and these three kinds of dosings are too low, then valuable metal cannot to be made in slag to form hydrophobic film, be difficult to reach being separated of valuable metal and gangue.
According to embodiments of the invention, collecting agent can be that amyl group sodium xanthate, butyl xanthate, diethyldithiocarbamate and butylamine black powder combine, and foaming agent can be terpenic oil.
S500: the ore pulp after medicine is carried out the first flotation process
According to embodiments of the invention, the ore pulp after medicine is carried out the first flotation process, thus tailings and the secondary concentrate containing lead oxide can be obtained.Thus, the recycling of valuable metal lead in leached mud can be realized.
According to embodiments of the invention, the secondary concentrate grade that gained contains lead oxide is not less than 20%, and the plumbous rate of recovery is not less than 60%.
Under can realizing normal condition according to the method for the process zinc hydrometallurgy leached mud of the embodiment of the present invention, the secondary of zinc hydrometallurgy leached mud is utilized, comparatively traditional handicraft is compared, can significantly reduce equipment investment, maintenance cost and energy consumption, thus significantly reduce leaching residue treating cost, simultaneously by adopting washing and flotation combined technique, the maximization that in leached mud, valuable metal recovery utilizes can be realized, thus establish solid foundation for the harmless treatment of zinc hydrometallurgy leached mud, in addition, the method obviously can improve working environment, and waste residue minimizing is obvious.
With reference to figure 2, the method for the process zinc hydrometallurgy leached mud of the embodiment of the present invention comprises further:
S600: in advance desulfurization slag is carried out the first press filtration process
According to embodiments of the invention, carry out before washing processes, in advance desulfurization slag being carried out the first press filtration process, thus the first filtrate and the first filter residue can being obtained desulfurization slag is mixed with water, and the first filtrate is returned S130 carry out the second flotation.Thus, can significantly reduce subsequent treatment pressure, thus improve leached mud subsequent treatment efficiency.
S700: in advance washing ore pulp is carried out the second press filtration process
According to embodiments of the invention, washing ore pulp is mixed with water carry out first size mixing before, in advance washing ore pulp is carried out the second press filtration process, thus the second filtrate and the second filter residue can be obtained, and the second filtrate is returned S130 carry out the second flotation.Thus, while improving leached mud subsequent treatment efficiency further, its processing cost is reduced.
S800: the secondary concentrate containing lead oxide is carried out the 3rd press filtration process
According to embodiments of the invention, what obtained by S500 carries out the 3rd press filtration process containing the secondary concentrate of lead oxide, thus can obtain the 3rd filtrate and the 3rd filter residue, and the 3rd filtrate is returned S130 carries out the second flotation.Thus, processing cost can be reduced further.
S900: iron concentrate is carried out the 4th press filtration process
According to embodiments of the invention, the iron concentrate obtained by S100 carries out the 4th press filtration process, thus can obtain the 4th filtrate and the 4th filter residue, and the 4th filtrate is returned S130 carries out the second flotation.Thus, processing cost can be reduced further.
S1000: by the 4th filter residue for the preparation of sulfuric acid
According to embodiments of the invention, by the 4th filter residue that obtains for the preparation of sulfuric acid, thus the maximization that in leached mud, element sulphur is recycled can be realized.
S1100: tailings is carried out the 5th press filtration process
According to embodiments of the invention, the tailings obtained by S500 carries out the 5th press filtration process, thus can obtain the 5th filtrate and the 5th filter residue, and the 5th filtrate is returned S130 carries out the second flotation.Thus, processing cost can be reduced further.
According to embodiments of the invention, content plumbous in the 5th filter residue is not higher than 4.20wt%, and the content of zinc is not higher than 3.00wt%, and the content of sulphur is not higher than 10.00wt%.Thus, leached mud minimizing can be realized and reach more than 35%.
In another aspect of the present invention, the present invention proposes a kind of system processing zinc hydrometallurgy leached mud.According to embodiments of the invention, the zinc containing 3.75wt% in zinc hydrometallurgy leached mud, the water zinc of 1.13wt%, the lead of 9.79wt%, the silver of 17.68 grams/ton, the iron of 10.40wt%.System below with reference to the process zinc hydrometallurgy leached mud of Fig. 3-4 pairs of embodiment of the present invention is described in detail.According to embodiments of the invention, this system comprises:
Desulfurizer 100: according to embodiments of the invention, desulfurizer 100 is suitable for leached mud to carry out desulfurization process, thus can obtain iron concentrate and desulfurization slag.Below with reference to Fig. 4, desulfurizer is described in detail: desulfurizer 100 comprises:
Second sizes mixing unit 110: according to embodiments of the invention, and the second unit 110 of sizing mixing is suitable for leached mud to mix with water and carries out second and size mixing thus can obtain leached mud slurries.
According to embodiments of the invention, leached mud and water mixed proportion are also not particularly limited, and according to a particular embodiment of the invention, leached mud and water can be that 1:2 ~ 4 mix and size mixing according to solid-to-liquid ratio.Inventor finds, if solid-to-liquid ratio is too high, adjusting slurry will overrich, and then the effect that causes sizing mixing is undesirable, affects subsequent job, and if solid-to-liquid ratio is too low, then make subsequent treatment amount reduce, cause unit cost to rise, thus make overall processing cost increase.
Second medicine unit 120: according to embodiments of the invention, the second medicine unit 120 and second unit 110 of sizing mixing is connected, and is suitable for leached mud slurries and collecting agent and foaming agent to carry out medicine, thus can obtain the slurries after medicine.
According to embodiments of the invention, leached mud slurries and collecting agent and foaming agent mixed proportion are also not particularly limited, according to a particular embodiment of the invention, leached mud slurries and collecting agent and foaming agent can be that 5000:2:1 mixes and carries out medicine according to mass ratio.Inventor finds, if quantity of slag ratio is too high, then medicine effect is inadequate, does not play medicine and turns use into, and if quantity of slag ratio is too low, reagent cost will significantly rise, and then causes processing cost to raise, and is unfavorable for popularization of the present invention.
According to embodiments of the invention, collecting agent can be amyl group sodium xanthate, and foaming agent can be terpenic oil.
Second flotation cells 130: according to embodiments of the invention, the second flotation cells 130 is connected with the second medicine unit 120, and is suitable for the slurries after by medicine and carries out the second flotation, thus can obtain iron concentrate and desulfurization slag.Thus, while reducing leaching residue treating cost, significantly improve the desulfuration efficiency of leached mud.
According to embodiments of the invention, the grade of iron concentrate is not less than 65%, and the rate of recovery of sulphur is not less than 75%.Thus, the maximization that in leached mud, element sulphur is recycled can be realized further.
Water washing device 200: according to embodiments of the invention, water washing device 200 is connected with desulfurizer 100, and is suitable for desulfurization slag to mix with water and carries out washing and process, thus can obtain washing ore pulp.Thus, the objectionable impurities calcium in desulfurization slag, magnesium, iron, arsenic, antimony, cadmium, the isoionic interference of nickel can effectively be removed.
According to embodiments of the invention, desulfurization slag and water mixed proportion are also not particularly limited, and according to a particular embodiment of the invention, desulfurization slag and water can be that 1:3 ~ 5 mix and carry out washing and process according to solid-to-liquid ratio.Inventor find, if solid-to-liquid ratio is too high, water washing effect is undesirable, and brings negative effect to subsequent job, and if solid-to-liquid ratio is too low, water unit consumption will be caused to rise, and then whole processing cost is gone up.
First size mixing device 300: according to embodiments of the invention, the first size mixing device 300 is connected with water washing device 200, and is suitable for washing ore pulp to mix with water and carries out first and size mixing, thus can obtain hydrometallurgy dreg slurry.Thus, leaching residue treating cost can be reduced further.
According to embodiments of the invention, the mixed proportion of washing ore pulp and water is also not particularly limited, and according to a particular embodiment of the invention, washing ore pulp and water can be that 1:2 ~ 4 mix and carry out first and size mixing according to solid-to-liquid ratio.Inventor finds, if solid-to-liquid ratio is too high, adjusting slurry will overrich, and then the effect that causes sizing mixing is undesirable, affect subsequent job, and if solid-to-liquid ratio is too low, then treating capacity reduces, unit cost rising, causes overall processing cost increase.
First medicine gasifying device 400: according to embodiments of the invention, first medicine gasifying device 400 is connected with the first size mixing device 300, and be suitable for obtained hydrometallurgy dreg slurry to mix with vulcanized sodium, collecting agent and foaming agent to carry out the first medicine, thus the ore pulp of medicine can be obtained.
According to embodiments of the invention, hydrometallurgy dreg slurry and vulcanized sodium, collecting agent and foaming agent mixed proportion are also not particularly limited, according to a particular embodiment of the invention, based on hydrometallurgy dreg slurry per ton, the consumption of vulcanized sodium can be 5000 ~ 10000 grams, the consumption of collecting agent can be 250 ~ 500 grams, and the consumption of foaming agent can be 10 ~ 50 grams.Inventor finds, if amount of sodium sulfide is too high, lead oxide metal sulfuration in slag can be made excessive and suppressed, be unfavorable for reclaiming, if collecting agent and frother dosages are crossed, to make medicament lose at most selective, the plumbous grade of impact time concentrate, cause the waste of reagent cost simultaneously, and these three kinds of dosings are too low, then valuable metal cannot to be made in slag to form hydrophobic film, be difficult to reach being separated of valuable metal and gangue.
According to embodiments of the invention, collecting agent can be that amyl group sodium xanthate, butyl xanthate, diethyldithiocarbamate and butylamine black powder combine, and foaming agent can be terpenic oil.
First flotation unit 500: according to embodiments of the invention, the first flotation unit 500 is connected with the first medicine gasifying device 400, and is suitable for the ore pulp after by medicine and carries out the first flotation process, thus can obtain tailings and the secondary concentrate containing lead oxide.Thus, the recycling of valuable metal lead in leached mud can be realized.
According to embodiments of the invention, the secondary concentrate grade that gained contains lead oxide is not less than 20%, and the plumbous rate of recovery is not less than 60%.
Under can realizing normal condition according to the system of the process zinc hydrometallurgy leached mud of the embodiment of the present invention, the secondary of zinc hydrometallurgy leached mud is utilized, comparatively traditional handicraft is compared, significantly can reduce equipment investment, maintenance cost and energy consumption, thus significantly reduce leaching residue treating cost, simultaneously by adopting washing and flotation combined technique, the maximization that in leached mud, valuable metal recovery utilizes can be realized, thus establish solid foundation for the harmless treatment of zinc hydrometallurgy leached mud, in addition, adopt this system obviously can improve working environment, and waste residue minimizing is obvious.
With reference to figure 4, the system of the process zinc hydrometallurgy leached mud of the embodiment of the present invention comprises further:
First filter-pressing device 600: according to embodiments of the invention, first filter-pressing device 600 is connected with desulfurizer 100, and be suitable for carrying out before washing processes desulfurization slag is mixed with water, in advance desulfurization slag is carried out the first press filtration process, thus the first filtrate and the first filter residue can be obtained, and the first filtrate is back to the second flotation cells 130.Thus, can significantly reduce subsequent treatment pressure, thus improve leached mud subsequent treatment efficiency.
Second filter-pressing device 700: according to embodiments of the invention, second filter-pressing device 700 is connected with the second flotation cells 130 with water washing device 200 respectively, and be suitable for washing ore pulp is mixed with water carry out first size mixing before, in advance washing ore pulp is carried out the second press filtration process, thus the second filtrate and the second filter residue can be obtained, and the second filtrate is returned the second flotation cells 130.Thus, while improving leached mud subsequent treatment efficiency further, its processing cost is reduced.
3rd filter-pressing device 800: according to embodiments of the invention, 3rd filter-pressing device 800 is connected with the second flotation cells 130 with the first flotation unit 500 respectively, and be suitable for the secondary concentrate containing lead oxide obtained to carry out the 3rd press filtration process, thus the 3rd filtrate and the 3rd filter residue can be obtained, and the 3rd filtrate is returned the second flotation cells 130.Thus, processing cost can be reduced further.
4th filter-pressing device 900: according to embodiments of the invention, 4th filter-pressing device 900 is connected with the second flotation cells 130 with desulfurizer 100 respectively, and be suitable for iron concentrate to carry out the 4th press filtration process, thus the 4th filtrate and the 4th filter residue can be obtained, and the 4th filtrate is returned the second flotation cells 130.Thus, processing cost can be reduced further.
Sulphuric acid plant 1000: according to embodiments of the invention, sulphuric acid plant 1000 is connected with the 4th filter-pressing device 900, and is suitable for by the 4th filter residue for the preparation of sulfuric acid, thus can realize the maximization that in leached mud, element sulphur is recycled.
5th filter-pressing device 1100: according to embodiments of the invention, 5th filter-pressing device 1100 is connected with the second flotation cells 130 with the first flotation unit 500 respectively, and be suitable for tailings to carry out the 5th press filtration process, thus the 5th filtrate and the 5th filter residue can be obtained, and the 5th filtrate is returned the second flotation cells 130.Thus, processing cost can be reduced further.
According to embodiments of the invention, content plumbous in the 5th filter residue is not higher than 4.20wt%, and the content of zinc is not higher than 3.00wt%, and the content of sulphur is not higher than 10.00wt%.Thus, leached mud minimizing can be realized and reach more than 35%.
Below with reference to specific embodiment, present invention is described, it should be noted that, these embodiments are only descriptive, and do not limit the present invention in any way.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (20)
1. process a method for zinc hydrometallurgy leached mud, it is characterized in that, comprising:
(1) described leached mud is carried out desulfurization process, to obtain iron concentrate and desulfurization slag;
(2) described desulfurization slag is mixed with water carry out washing and process, obtain washing ore pulp;
(3) described washing ore pulp is mixed with water carry out first and size mixing, to obtain hydrometallurgy dreg slurry;
(4) described hydrometallurgy dreg slurry is mixed with vulcanized sodium, collecting agent and foaming agent carry out the first medicine, to obtain the ore pulp of medicine; And
(5) ore pulp after described medicine is carried out the first flotation process, to obtain tailings and the secondary concentrate containing lead oxide.
2. method according to claim 1, is characterized in that, step (1) is carried out according to the following step:
(1-1) described leached mud is mixed with water carry out second and size mixing, to obtain leached mud slurries;
(1-2) described leached mud slurries are mixed with collecting agent and foaming agent carry out the second medicine, to obtain the slurries after medicine;
(1-3) slurries after described medicine are carried out the second flotation, to obtain iron concentrate and desulfurization slag.
3. method according to claim 2, is characterized in that, comprises further:
(6) carry out before washing processes, in advance described desulfurization slag being carried out the first press filtration process, to obtain the first filtrate and the first filter residue, and described first filtrate returning being carried out described second flotation described desulfurization slag is mixed with water.
4. method according to claim 2, is characterized in that, comprises further:
(7) described washing ore pulp is mixed with water carry out first size mixing before, in advance described washing ore pulp is carried out the second press filtration process, to obtain the second filtrate and the second filter residue, and described second filtrate returning is carried out described second flotation.
5. method according to claim 2, is characterized in that, comprises further:
(8) the described secondary concentrate containing lead oxide is carried out the 3rd press filtration process, to obtain the 3rd filtrate and the 3rd filter residue, and described 3rd filtrate returning is carried out described second flotation;
(9) described iron concentrate is carried out the 4th press filtration process, to obtain the 4th filtrate and the 4th filter residue, and described 4th filtrate returning is carried out described second flotation; And
(10) by described 4th filter residue for the preparation of sulfuric acid.
6. method according to claim 2, is characterized in that, comprises further:
(11) described tailings is carried out the 5th press filtration process, to obtain the 5th filtrate and the 5th filter residue, and described 5th filtrate returning is carried out described second flotation.
7. method according to claim 1, is characterized in that, in step (1), the grade of described iron concentrate is not less than 65%.
8. method according to claim 1, is characterized in that,
In step (2), be that 1:3 ~ 5 mix and carry out described washing and process by described desulfurization slag and water according to solid-to-liquid ratio,
In step (3), be that 1:2 ~ 4 mix and carry out described first and size mixing by described washing ore pulp and water according to solid-to-liquid ratio.
9. method according to claim 1, is characterized in that,
In step (4), based on described hydrometallurgy dreg slurry per ton, the consumption of described vulcanized sodium is 5000 ~ 10000 grams, and the consumption of described collecting agent is 250 ~ 500 grams, and the consumption of described foaming agent is 10 ~ 50 grams,
In step (5), the described secondary concentrate grade containing lead oxide is not less than 20%.
10. method according to claim 6, is characterized in that, in step (11), content plumbous in described 5th filter residue is not higher than 4.20wt%, and the content of zinc is not higher than 3.00wt%, and the content of sulphur is not higher than 10.00wt%.
11. 1 kinds of systems processing zinc hydrometallurgy leached mud, is characterized in that, comprising:
Desulfurizer, described desulfurizer is suitable for described leached mud to carry out desulfurization process, to obtain iron concentrate and desulfurization slag;
Water washing device, described water washing device is connected with described desulfurizer, and is suitable for described desulfurization slag to mix with water and carries out washing and process, and obtains washing ore pulp;
First size mixing device, described first size mixing device is connected with described water washing device, and is suitable for described washing ore pulp to mix with water and carries out first and size mixing, to obtain hydrometallurgy dreg slurry;
First medicine gasifying device, described first medicine gasifying device is connected with described first size mixing device, and is suitable for described hydrometallurgy dreg slurry to mix with vulcanized sodium, collecting agent and foaming agent to carry out the first medicine, to obtain the ore pulp of medicine; And
First flotation unit, described first flotation unit is connected with described first medicine gasifying device, and is suitable for the ore pulp after by described medicine and carries out the first flotation process, to obtain tailings and the secondary concentrate containing lead oxide.
12. systems according to claim 11, is characterized in that, described vulcanization plant comprises:
Second sizes mixing unit, and the described second unit of sizing mixing is suitable for described leached mud to mix with water and carries out second and size mixing, to obtain leached mud slurries;
Second medicine unit, described second medicine unit and described second unit of sizing mixing is connected, and is suitable for described leached mud slurries and collecting agent and foaming agent to carry out medicine, to obtain the slurries after medicine;
Second flotation cells, described second flotation cells is connected with described second medicine unit, and is suitable for the slurries after by described medicine and carries out the second flotation, to obtain iron concentrate and desulfurization slag.
13. systems according to claim 12, it is characterized in that, comprise further: the first filter-pressing device, described first filter-pressing device is connected with described desulfurizer, and be suitable for carrying out before washing processes described desulfurization slag is mixed with water, in advance described desulfurization slag is carried out the first press filtration process, to obtain the first filtrate and the first filter residue, and described first filtrate is back to described second flotation cells.
14. systems according to claim 12, is characterized in that, comprise further:
Second filter-pressing device, described second filter-pressing device is connected with described second flotation cells with described water washing device respectively, and be suitable for described washing ore pulp is mixed with water carry out first size mixing before, in advance described washing ore pulp is carried out the second press filtration process, to obtain the second filtrate and the second filter residue, and described second filtrate is back to described second flotation cells.
15. systems according to claim 12, is characterized in that, comprise further:
3rd filter-pressing device, described 3rd filter-pressing device is connected with described second flotation cells with described first flotation unit respectively, and be suitable for the described secondary concentrate containing lead oxide to carry out the 3rd press filtration process, to obtain the 3rd filtrate and the 3rd filter residue, and described 3rd filtrate is back to described second flotation cells;
4th filter-pressing device, described 4th filter-pressing device is connected with described desulfurizer, and is suitable for described iron concentrate to carry out the 4th press filtration process, to obtain the 4th filtrate and the 4th filter residue, and described 4th filtrate is back to described second flotation cells; And
Sulphuric acid plant, described sulphuric acid plant is connected with described 4th filter-pressing device, and is suitable for described 4th filter residue for the preparation of sulfuric acid.
16. systems according to claim 12, is characterized in that, comprise further:
5th filter-pressing device, described 5th filter-pressing device is connected with the second flotation cells with described first flotation unit respectively, and be suitable for described tailings to carry out the 5th press filtration process, to obtain the 5th filtrate and the 5th filter residue, and described 5th filtrate is back to described second flotation cells.
17. systems according to claim 11, is characterized in that, the grade of described iron concentrate is not less than 65%, and the described secondary concentrate grade containing lead oxide is not less than 20%.
18. systems according to claim 11, is characterized in that, are that 1:3 ~ 5 mix and carry out described washing and process by described desulfurization slag and water according to solid-to-liquid ratio, are that 1:2 ~ 4 mix and carry out described first and size mixing by described washing ore pulp and water according to solid-to-liquid ratio.
19. systems according to claim 11, is characterized in that, based on described hydrometallurgy dreg slurry per ton, the consumption of described vulcanized sodium is 5000 ~ 10000 grams, and the consumption of described collecting agent is 250 ~ 500 grams, and the consumption of described foaming agent is 10 ~ 50 grams.
20. systems according to claim 16, is characterized in that, content plumbous in described 5th filter residue is not higher than 4.20wt%, and the content of zinc is not higher than 3.00wt%, and the content of sulphur is not higher than 10.00wt%.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4824655A (en) * | 1986-10-03 | 1989-04-25 | Bayer Aktiengesellschaft | Process for the preparation of sulphur dioxide |
| CN101734626A (en) * | 2009-11-23 | 2010-06-16 | 长沙有色冶金设计研究院 | Method for recovering sulfur element from zinc sulphide concentrate direct leaching residues |
| CN102527497A (en) * | 2011-12-29 | 2012-07-04 | 中南大学 | Beneficiation method for separating zinc sulfide ores from sulphur in wet-method zinc smelting slag |
| CN102600963A (en) * | 2012-03-09 | 2012-07-25 | 大兴安岭云冶矿业开发有限公司 | Ore residue separation method after pressurized acid leaching of zinc sulfide ore concentrate |
| CN102824962A (en) * | 2012-09-17 | 2012-12-19 | 株洲市兴民科技有限公司 | Reagent formula used for zinc leaching residue floatation process and application method of reagent formula |
| CN103103344A (en) * | 2013-03-01 | 2013-05-15 | 中南大学 | Dressing-smelting combined treatment method for sulfate-containing lead-zinc smelting slags |
-
2015
- 2015-03-26 CN CN201510136742.1A patent/CN104785356A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4824655A (en) * | 1986-10-03 | 1989-04-25 | Bayer Aktiengesellschaft | Process for the preparation of sulphur dioxide |
| CN101734626A (en) * | 2009-11-23 | 2010-06-16 | 长沙有色冶金设计研究院 | Method for recovering sulfur element from zinc sulphide concentrate direct leaching residues |
| CN102527497A (en) * | 2011-12-29 | 2012-07-04 | 中南大学 | Beneficiation method for separating zinc sulfide ores from sulphur in wet-method zinc smelting slag |
| CN102600963A (en) * | 2012-03-09 | 2012-07-25 | 大兴安岭云冶矿业开发有限公司 | Ore residue separation method after pressurized acid leaching of zinc sulfide ore concentrate |
| CN102824962A (en) * | 2012-09-17 | 2012-12-19 | 株洲市兴民科技有限公司 | Reagent formula used for zinc leaching residue floatation process and application method of reagent formula |
| CN103103344A (en) * | 2013-03-01 | 2013-05-15 | 中南大学 | Dressing-smelting combined treatment method for sulfate-containing lead-zinc smelting slags |
Non-Patent Citations (1)
| Title |
|---|
| F.拉什申等: "铅钒浮选:从锌浸出渣中回收铅的研究", 《国外技术矿选矿》 * |
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