CN102534205A - Method for processing lead-zinc mixed concentrate by using oxidative pressure acid leaching in zinc hydrometallurgy - Google Patents
Method for processing lead-zinc mixed concentrate by using oxidative pressure acid leaching in zinc hydrometallurgy Download PDFInfo
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- CN102534205A CN102534205A CN2012100616122A CN201210061612A CN102534205A CN 102534205 A CN102534205 A CN 102534205A CN 2012100616122 A CN2012100616122 A CN 2012100616122A CN 201210061612 A CN201210061612 A CN 201210061612A CN 102534205 A CN102534205 A CN 102534205A
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Abstract
The invention discloses a method for processing lead-zinc mixed concentrate by using oxidative pressure acid leaching in zinc hydrometallurgy. The method comprises the following steps of: (A) importing the lead-zinc mixed concentrate into oxygen and an acid to form a mixed solution, and controlling the liquid-solid ratio of the mixed solution to be 4-8, wherein the lead-zinc mixed concentrate has the grain size being over -400 meshes, the concentration of the oxygen is over 93%, and the concentration of the acid is 110-190 g/L; (B) controlling the temperature of the mixed solution to be at 150+/-5 DEG C and controlling the pressure intensity of the mixed solution to be at 0.8-1.5 Mpa; (c) stirring to carry out acid leaching for a predetermined time by using a predetermined stirring speed so as to obtain leached ore pulp; and (D) carrying out liquid-solid separation on the leached ore pulp so as to obtain ore slag and a leached solution, and conveying the leached solution into a next process for pressurizing, neutralizing, de-ironing and filtering slag so as to obtain a leachate with the zinc content accounting for 100-120 g/L, the acid concentration accounting for 20-25 g/L and the iron content accounting for being no more than 2 g/L, and lead-iron slag with the lead content accounting for 18-28%. The recovery ratio of the lead and the zinc is greatly increased after the lead-zinc mixed concentrate is processed by using the method disclosed by the invention.
Description
Technical field
The present invention relates to the nonferrous metallurgy field, especially relate to and utilize oxygen to press acidleach to handle the method for lead and zinc bulk concentrate in a kind of zinc hydrometallurgy production.
Background technology
Contain zinc 18-26.87%, plumbous 14.67-23%, iron 10-15.37%, sulphur 25-30.37% in the lead and zinc bulk concentrate that obtains through the ore dressing of traditional mixing flotation process; The recovery plumbous, zinc is low-grade poor; And traditional wet smelting process technology only is suitable for handling zinc sulfide concentrates, also temporary both at home and abroad at present no sophisticated Zinc hydrometallurgy process technical finesse lead and zinc bulk concentrate.
Summary of the invention
The present invention is intended to solve at least one of technical problem that exists in the prior art.
For this reason, one object of the present invention is to propose to utilize in a kind of zinc hydrometallurgy production oxygen to press acidleach to handle the method for lead and zinc bulk concentrate, and through the lead and zinc bulk concentrate that this method is handled, lead, zinc recovery and taste improve greatly.
Utilize oxygen to press acidleach to handle the method for lead and zinc bulk concentrate in the zinc hydrometallurgy production according to the embodiment of the invention; Said method comprising the steps of: A) lead and zinc bulk concentrate of granularity more than-400 orders fed in the acid that oxygen and the concentration of concentration 93% or more is 110-190g/L with the formation mixed solution, and the liquid-solid ratio of controlling said mixed solution is 4-8; B) temperature of the said mixed solution of control is that 150 ± 5 ℃, pressure are 0.8-1.5Mpa; C) stir the acidleach scheduled time to obtain leaching ore pulp with predetermined stirring velocity; With D) said leaching ore pulp is carried out liquid-solid the separation to obtain slag and infusion solution, during said infusion solution is sent into and is pressurizeed in next step operation with the deironing filter residue to obtain containing the leach liquor of zinc 100-120g/L, acid concentration 20-25g/L, iron level≤2g/L and the galvanized iron slag of leaded 18-28%.
Utilize the oxygen to press acidleach to handle the method for lead and zinc bulk concentrate in the zinc hydrometallurgy production according to the embodiment of the invention, realized zinc, plumbous separation, recovery and regenerated using, and handle back zinc leaching rate>=98% through present method; Iron leaching yield≤10%, galvanized iron lead-in-dreg 18-28%, output contains the leach liquor of zinc 100-120g/L, acid concentration 20-25g/L and iron level≤2g/L simultaneously; Reach the requirement that two sections pressurization neutralizations remove weight of iron; Be convenient to through in two sections pressurizations and deironing, handle back lead recovery>=99%, zinc recovery>=98% through present method simultaneously; Zinc, the plumbous recovery and taste improve greatly; And technical process is short, and feasibility is strong, good separating effect.In addition, present method does not have waste gas, waste water, waste sludge discharge in actual production process, is beneficial to the protection environment, has improved production environment simultaneously, and equipment layout is compact, and floor space is little, and practicality is good.
In addition, the method for utilizing oxygen to press acidleach to handle lead and zinc bulk concentrate in the zinc hydrometallurgy production based on the embodiment of the invention also has following additional technical feature:
In one embodiment of the invention, said predetermined stirring velocity is 200-250r/min.Can better the lead in the lead and zinc bulk concentrate be separated with zinc and recycling thus, improve the recovery and taste plumbous, zinc.
In one embodiment of the invention, the said scheduled time is 1-1.5 hour.Can better the lead in the lead and zinc bulk concentrate be separated with zinc and recycling thus, improve the recovery and taste plumbous, zinc.
In some embodiments of the invention, said oxygen is pressurized air or oxygen-rich air or industrial oxygen.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage obviously with are easily understood becoming the description of embodiment from combining figs, wherein:
Fig. 1 utilizes oxygen to press acidleach to handle the schematic flow sheet of the method for lead and zinc bulk concentrate in the zinc hydrometallurgy production according to the embodiment of the invention.
Embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention; It will be appreciated that; The orientation of indications such as term " " center ", " vertically ", " laterally ", " on ", D score, " preceding ", " back ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward " or position relation are for based on orientation shown in the drawings or position relation; only be to describe with simplifying for the ease of describing the present invention; rather than the device or the element of indication or hint indication must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " only are used to describe purpose, and can not be interpreted as indication or hint relative importance.
In description of the invention, need to prove that only if clear and definite regulation and qualification are arranged in addition, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be to be fixedly connected, also can be to removably connect, or connect integratedly; Can be mechanical connection, also can be to be electrically connected; Can be directly to link to each other, also can link to each other indirectly through intermediary, can be the connection of two element internals.For those of ordinary skill in the art, can particular case understand above-mentioned term concrete implication in the present invention.
In addition, in description of the invention, except as otherwise noted, the implication of " a plurality of " is two or more.
Below with reference to utilizing oxygen to press acidleach to handle the method for lead and zinc bulk concentrate in the figure 1 zinc hydrometallurgy production of description according to the embodiment of the invention.As shown in Figure 1, said method comprising the steps of:
A) lead and zinc bulk concentrate of granularity more than-400 orders fed in the acid that oxygen and the concentration of concentration 93% or more is 110-190g/L with the formation mixed solution, and the liquid-solid ratio of controlling said mixed solution is 4-8;
B) temperature of the said mixed solution of control is that 150 ± 5 ℃, pressure are 0.8-1.5Mpa;
C) stir the acidleach scheduled time to obtain leaching ore pulp with predetermined stirring velocity; With
D) said leaching ore pulp is carried out liquid-solid separation to obtain slag and infusion solution, during said infusion solution is sent into and is pressurizeed in next step operation with the deironing filter residue to obtain containing the leach liquor of zinc 100-120g/L, acid concentration 20-25g/L, iron level≤2g/L and the galvanized iron slag of leaded 18-28%.
Utilize the oxygen to press acidleach to handle the method for lead and zinc bulk concentrate in the zinc hydrometallurgy production according to the embodiment of the invention, realized zinc, plumbous separation, recovery and regenerated using, and handle back zinc leaching rate>=98% through present method; Iron leaching yield≤10%, galvanized iron lead-in-dreg 18-28%, output contains the leach liquor of zinc 100-120g/L, acid concentration 20-25g/L and iron level≤2g/L simultaneously; Reach the requirement that two sections pressurization neutralizations remove weight of iron; Be convenient to through in two sections pressurizations and deironing, handle back lead recovery>=99%, zinc recovery>=98% through present method simultaneously; Zinc, the plumbous recovery and taste improve greatly; And technical process is short, and feasibility is strong, good separating effect.In addition, present method does not have waste gas, waste water, waste sludge discharge in actual production process, is beneficial to the protection environment, has improved production environment simultaneously, and equipment layout is compact, and floor space is little, and practicality is good.
In one embodiment of the invention, said predetermined stirring velocity is 200-250r/min.Can better the lead in the lead and zinc bulk concentrate be separated with zinc and recycling thus, improve the recovery and taste plumbous, zinc.
In one embodiment of the invention, the said scheduled time is 1-1.5 hour.Can better the lead in the lead and zinc bulk concentrate be separated with zinc and recycling thus, improve the recovery and taste plumbous, zinc.
In one embodiment of the invention, said oxygen is pressurized air.Certainly, the present invention is not limited to this, and in other embodiment of the present invention, said oxygen also can be oxygen-rich air or industrial oxygen.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described embodiments of the invention; Those having ordinary skill in the art will appreciate that: under the situation that does not break away from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited claim and equivalent thereof.
Claims (4)
1. utilize oxygen to press acidleach to handle the method for lead and zinc bulk concentrate in a zinc hydrometallurgy production, said method comprising the steps of:
A) lead and zinc bulk concentrate of granularity more than-400 orders fed in the acid that oxygen and the concentration of concentration 93% or more is 110-190g/L with the formation mixed solution, and the liquid-solid ratio of controlling said mixed solution is 4-8;
B) temperature of the said mixed solution of control is that 150 ± 5 ℃, pressure are 0.8-1.5Mpa;
C) stir the acidleach scheduled time to obtain leaching ore pulp with predetermined stirring velocity; With
D) said leaching ore pulp is carried out liquid-solid separation to obtain slag and infusion solution, during said infusion solution is sent into and is pressurizeed in next step operation with the deironing filter residue to obtain containing the leach liquor of zinc 100-120g/L, acid concentration 20-25g/L, iron level≤2g/L and the galvanized iron slag of leaded 18-28%.
2. utilize oxygen to press acidleach to handle the method for lead and zinc bulk concentrate in the zinc hydrometallurgy production according to claim 1, it is characterized in that said predetermined stirring velocity is 200-250r/min.
3. utilize oxygen to press acidleach to handle the method for lead and zinc bulk concentrate in the zinc hydrometallurgy production according to claim 1, it is characterized in that the said scheduled time is 1-1.5 hour.
4. utilize oxygen to press acidleach to handle the method for lead and zinc bulk concentrate in the zinc hydrometallurgy production according to claim 1, it is characterized in that said oxygen is pressurized air or oxygen-rich air or industrial oxygen.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100616122A CN102534205A (en) | 2012-03-09 | 2012-03-09 | Method for processing lead-zinc mixed concentrate by using oxidative pressure acid leaching in zinc hydrometallurgy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100616122A CN102534205A (en) | 2012-03-09 | 2012-03-09 | Method for processing lead-zinc mixed concentrate by using oxidative pressure acid leaching in zinc hydrometallurgy |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709373A (en) * | 2009-11-18 | 2010-05-19 | 云南冶金集团股份有限公司技术中心 | Method and system for treating lead-zinc sulfide ores |
| CN102002602A (en) * | 2010-11-10 | 2011-04-06 | 云南永昌铅锌股份有限公司 | Method for increasing recovery rates of lead and zinc during lead-zinc sulfide ore dressing-smelting joint application |
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- 2012-03-09 CN CN2012100616122A patent/CN102534205A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709373A (en) * | 2009-11-18 | 2010-05-19 | 云南冶金集团股份有限公司技术中心 | Method and system for treating lead-zinc sulfide ores |
| CN102002602A (en) * | 2010-11-10 | 2011-04-06 | 云南永昌铅锌股份有限公司 | Method for increasing recovery rates of lead and zinc during lead-zinc sulfide ore dressing-smelting joint application |
Non-Patent Citations (1)
| Title |
|---|
| 李勇等: "低品位硫化铅锌矿混合浮选-氧压酸浸分离铅锌的研究", 《中国有色冶金》 * |
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Application publication date: 20120704 |