CN1309848C - Pellelizing technology suitable for biological dump leaching and extracting metal - Google Patents
Pellelizing technology suitable for biological dump leaching and extracting metal Download PDFInfo
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- CN1309848C CN1309848C CNB021288372A CN02128837A CN1309848C CN 1309848 C CN1309848 C CN 1309848C CN B021288372 A CNB021288372 A CN B021288372A CN 02128837 A CN02128837 A CN 02128837A CN 1309848 C CN1309848 C CN 1309848C
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- granulation
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- dump leaching
- extracting metal
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Abstract
The present invention relates to a pellelizing technology for a powder ore, particularly to a pellelizing technology suitable for biological dump leaching and extracting metal, which comprises the following steps: (1). in material preparation, mixing a sulfide ore powder for the biological dump leaching and extracting metal with a binder which is an organic binder, an inorganic binder, or a mixture of the organic binder and the inorganic binder; (2). in pelletization, pelletizing the materials in step (1) in a pelletizer to enable the granularity of a finished pellet is 5 to 25mm; (3). in maintenance, covering the pelletized materials with a ventilation substance, and naturally drying the pelletized materials so as to obtain a dry pellet. The technology has the advantage of simplicity, the used binder is easy to obtain and makes no difference on the biological immersion properties of the pellet, and the pellet has sufficient strength so as to enable construction dumps to have the advantages of favorable permeability and assurance of no collapse and subsidence.
Description
Technical field
The present invention relates to a kind of fine ore granulation process, particularly be applicable to the granulation process of biological dump leaching and extracting metal.
Background technology
The biological dump leaching technology is because its investment is little, technical process is short, energy consumption is little, environmental friendliness, advantages such as the utilization of resources is wide are resources processing, METAL EXTRACTION provides a good approach, at present, the resource that biological dump leaching is handled is the sulphide ores raw ore, ore is through being crushed to 10～50mm size, building dump leaching then goes out, and will be to concentrate, mine tailing carries out biological dump leaching and then has difficulty, reason is a concentrate, the mine tailing granularity is less, be generally 0.076mm, realize sulphide concentrate, the biological dump leaching technology of mine tailing, then must be to concentrate, mine tailing is made ball, its granularity is reached more than the 5mm, after building heap, to guarantee that leaching process has good penetration on the one hand, leachability also will guarantee not cave on the other hand, subside.The raw material that existing breeze granulation process is handled is mainly powdered iron ore, and the iron ore surface hydrophilicity is strong, make the ball process and be easy to balling-up, but the mineral that biological dump leaching is handled mostly is sulphide ores, and its surface hydrophobicity is difficult to balling-up; Aspect granulation process, existing pellet forming process route mostly is breeze and makes the process that ball to wet bulb is dried to dry bulb roasting balling-up, finished ball is gone into blast furnace or is advanced rotary kiln and no longer drip pouring, soak, therefore this traditional operation more complicated and be not suitable for the requirement of biological dump leaching and extracting metal technology is necessary to provide a kind of simple granulation process; Because in bioleaching process, sulfide ore particle meeting oxygenolysis, pelletizing can be subjected to the immersion and the biological corrosion of sour water, so finished ball should have properties such as anticorrosive, water-fast, building heap wants to guarantee that leaching process has good penetration and leachability, does not cave in again, subsides; In addition, used binding agent should be easy to get, cheaply in the granulation, and to the leaching process bacterial growth, the leach liquor metal ion reclaims does not have negative impact.
Summary of the invention
The purpose of this invention is to provide a kind of granulation process that is applicable to biological dump leaching and extracting metal, this technology is easy, be suitable for being difficult to the sulphide concentrate and the mine tailing of balling-up, used binding agent source is wide, the growth of leaching microbacteria and the leaching of metal all there is not influence, pelletizing has enough intensity, can make to build to pile to have good penetration, and guarantee not cave in, subside.
For achieving the above object, the present invention takes following technical scheme:
A kind of granulation process that is applicable to biological dump leaching and extracting metal, it comprises following key step:
(1) get the raw materials ready: the breeze that will be used for biological dump leaching and extracting metal mixes with binding agent, and this binding agent is the mixture of organic binder bond or mineral binder bond or organic binder bond and mineral binder bond.
(2) granulation: with the material granulation in pelletizer in (1), the granularity of finished ball is 5～25mm.
(3) maintenance: the top loam cake thing of breathing freely, make its seasoning, obtain dry bulb.
Used binding agent can be mineral binder bond such as wilkinite, diatomite, Wingdale or gypsum etc. among the present invention, can use one or more (comprising two kinds), its summation be breeze weight 0.5～4% between; Also can be organic binder bond, for example carboxymethyl cellulose, polyacrylamide, starch or papermaking wastewater, adding proportion is 0.02～1% of a breeze weight; If organic and inorganic two kinds are mixed, mix the back total amount and account for 0.3～3% of concentrate, wherein, the ratio of organic binder bond and inorganic adhesive is 15-10: 1-1.5; When described organic binder bond used separately, its consumption was pressed the weight percent meter of breeze, and wherein carboxymethyl cellulose 0.01～2%; Polyacrylamide 0.01～2%; Starch 0.01～3%; Papermaking wastewater 0.5～8%; When described mineral binder bond used separately, its consumption was with the weight percent meter of breeze, and wherein wilkinite 0.1～5%; Diatomite 0.1～6%; Wingdale 0.5～5%; Rhombspar 0.2～5%; Gypsum 0.3～6%.
Embodiment
Embodiment 1:
At first the dried nickelous sulfide cobalt copper mine concentrate with granularity very thin (0.076mm accounts for more than 75%) mixes with the compound binding agent that is made up by organic binder bond and mineral binder bond, the addition of binding agent is in concentrate and weight of binder per-cent, wherein mineral binder bond is the mixture of wilkinite and Wingdale, blending ratio is 1: 4, institute's consumption is 0.8%～4% of a concentrate consumption, organic binder bond is the mixture of carboxymethyl cellulose and starch, blending ratio is 1: 1, institute's consumption is 0.02%～1% of a concentrate consumption, (wherein, the ratio of organic binder bond and inorganic adhesive is 15-10: 1-1.5), make the abundant mixing of compound binding agent and breeze, the consumption of compound binding agent is 0.8%～2% of a concentrate consumption, and then add the tap water of concentrate weight percent meter 6～10%, continue mixing, make the abundant planar water of breeze and adhesive surface, placed 30～60 minutes.
The granulation machine is balling disc or drum mixer, and balling disc can be to make ball or make ball continuously in batches.Disk is made 40～65 ° of the disk tilt angles of ball, and disc rotation speed 80～150r/min makes and sprays 2%～5% moisture content in the ball process, makes to make ball moisture content and reach 10%～12%.Making ball makes 20 minutes ball time/every dish in batches, and disk is made ball pelletizing granularity＞5mm.For the drum mixer granulation, 12～15 ° at cylinder inclination angle, rotating speed 30～80r/min adopts and makes ball continuously, about cylinder pelletizing pelletizing granularity 5mm.More than wet bulb ultimate compression strength 1.0～2.5kg/, wet bulb is stacked naturally, top loam cake straw cloth carries out maintenance, makes its seasoning, and curing time 60 hours is more than the dry bulb ultimate compression strength 5～10kg/ after the seasoning.
Build heap with dry bulb, pile high 4～6m, drip with the high iron solution that contains ore-leaching bacteria and drench the ore deposit heap, carry out biology and leach, leach liquor pH1.8, qualified leach liquor enters the metal recovery operation; Metal ion in the qualified leach liquor adopts the extraction-electrodeposition process or the precipitator method to reclaim.
The characteristic that this pelletizing is had in building heap is anti-immersion, corrosion-resistant, builds heap and does not cave in and subside, and metal is easily leached.To soaking the active nothing influence of ore deposit bacterium, for example nickelous sulfide cobalt copper mine concentrate pelletizing leached 30 days continuously through test, and pelletizing does not fall apart, has excellent in shape, and the ore-leaching bacteria growth reaches 10
9Individual/ml, the leaching yield of nickel reaches more than 85%.
Embodiment 2
The raw material dried mine tailing of nickelous sulfide cobalt copper mine, implementation step is with example 1.
At first the dried mine tailing of nickelous sulfide cobalt copper mine with granularity very thin (0.076mm accounts for more than 75%) mixes with the compound binding agent that is made up by organic binder bond and mineral binder bond, the addition of binding agent is in mine tailing and weight of binder per-cent, mineral binder bond is a wilkinite, diatomite, Wingdale, rhombspar, and gypsum, blending ratio is 1: 1: 1: 1: 1, institute's consumption is 0.5%～3% of a concentrate consumption, organic binder bond is a carboxymethyl cellulose, polyacrylamide, blending ratio is 1: 1, institute's consumption is 0.02～1% of a mine tailing consumption, make the abundant mixing of compound binding agent and breeze, the consumption of compound binding agent is 0.8%～2% of a mine tailing consumption, wherein, the ratio of organic binder bond and inorganic adhesive is 15-10: 1-1.5, add the tap water of pressing mine tailing weight percent meter 6～10% then, continue mixing, make the abundant planar water of breeze and adhesive surface, placed 30～60 minutes, put into balling disc then or drum mixer is made ball, wherein make ball for disk, 40～65 ° of disk tilt angles, disc rotation speed 80～150r/min makes and sprays 2%～5% moisture content in the ball process, makes to make ball moisture content and reach 10%～12%.Make ball and adopt batch of material to make ball and make ball continuously, make ball for batch of material and make 20 minutes ball time/every dish.For the drum mixer granulation, 12～15 ° at cylinder inclination angle, rotating speed 30～80r/min adopts and makes ball continuously.Wherein disk is made ball pelletizing granularity＞5mm, about cylinder pelletizing pelletizing granularity 5mm.More than wet bulb ultimate compression strength 1.0～2.5kg/, wet bulb is stacked naturally top loam cake straw cloth, carry out maintenance, make its seasoning, curing time 60 hours is more than the dry bulb ultimate compression strength 5～10kg/ after the seasoning, build heap with dry bulb, pile high 4～6m, drip with the high iron solution that contains ore-leaching bacteria and drench the ore deposit heap, carry out biology and leach, leach liquor pH1.8, qualified leach liquor enters the metal recovery operation; Metal ion in the qualified leach liquor adopts extraction one electrodeposition process or the precipitator method to reclaim.
Embodiment 3:
Making the ball raw material is the wet mine tailing of nickelous sulfide cobalt copper mine, pellet forming process is as follows: at first the wet mine tailing of nickelous sulfide cobalt copper mine with granularity very thin (0.076mm accounts for more than 75%) mixes with the compound binding agent that is made up by organic binder bond and mineral binder bond, the addition of binding agent is in breeze and weight of binder per-cent, mineral binder bond is a wilkinite, diatomite, Wingdale, rhombspar, and gypsum, blending ratio is 1: 1: 1: 1: 1, institute's consumption is 0.5%～4% of a mine tailing consumption, organic binder bond is a carboxymethyl cellulose, starch and papermaking wastewater, blending ratio is 1: 1: 6, adding proportion 0.5～1%, make the abundant mixing of compound binding agent and breeze, the consumption of compound binding agent is 0.8%～2% of a mine tailing consumption, wherein, the ratio of organic binder bond and inorganic adhesive is 15-10: 1-1.5, add the tap water of pressing mine tailing weight percent 3% then, continue mixing, make the abundant planar water of breeze and adhesive surface, placed 30～60 minutes, put into balling disc then or drum mixer is made ball, wherein make ball for disk, 40～65 ° of disk tilt angles, disc rotation speed 80～150r/min, make in the ball process and to spray 2.5% moisture content, make and make ball moisture content and reach 10.5%.Make ball and adopt batch of material to make ball and make ball continuously, make ball, make 20 minutes ball time/every dish for batch of material.For the drum mixer granulation, 12～15 ° at cylinder inclination angle, rotating speed 30～80r/min adopts and makes ball continuously.Wherein disk is made ball pelletizing granularity＞5mm, about cylinder pelletizing pelletizing granularity 5mm.Wet bulb ultimate compression strength 1.0～2.5kg/, wet bulb is stacked naturally top loam cake straw cloth, carry out maintenance, make its seasoning, curing time 70 hours is more than the dry bulb ultimate compression strength 10～15kg/ after the seasoning, build heap with dry bulb, pile high 4～6m, drip with the high iron solution that contains ore-leaching bacteria and drench the ore deposit heap, carry out biology and leach, leach liquor pH1.7～2.0, qualified leach liquor enters the metal recovery operation; Metal ion in the qualified leach liquor adopts the extraction-electrodeposition process or the precipitator method to reclaim.
Embodiment 4:
Granulating raw material is a nickelous sulfide cobalt copper mine wet concentrate, pellet forming process is as follows: at first with the compound binding agent mixing of organic binder bond and mineral binder bond combination, mineral binder bond is the mixture of wilkinite and Wingdale, blending ratio is 1: 4, institute's consumption is 0.8%～4% of a concentrate consumption, organic binder bond is the mixture of carboxymethyl cellulose and starch, blending ratio is 1: 1, institute's consumption is 0.02%～1% of a concentrate consumption, make by compound binding agent and the abundant mixing of breeze, the consumption of compound binding agent is 0.8%～2% of a concentrate consumption, in concentrate and weight of binder per-cent, the dense operation section that the combination compound binding agent is directly added ore dressing process, at dense whipping process, make the abundant mixing of binding agent and fine ore, nickelous sulfide cobalt copper mine granularity of concentrate is that 0.076mm accounts for more than 75%, concentrate and the moisture tap water of pressing concentrate weight percent existing 10% of binder mixtures by the thickener output, so no longer add water, the ball raw material of making of output is broken up placement 30～60 minutes, put into balling disc then or drum mixer is made ball, wherein make ball for disk, 40～65 ° of disk tilt angles, disc rotation speed 80～150r/min, make in the ball process and spray less water, make and make ball moisture content and reach 10.5%.Make ball and adopt batch of material to make ball and make ball continuously, make ball for batch of material and make 20 minutes ball time/every dish.For the drum mixer granulation, 12～15 ° at cylinder inclination angle, rotating speed 30～80r/min adopts and makes ball continuously.Wherein disk is made ball pelletizing granularity＞5mm, about cylinder pelletizing pelletizing granularity 5mm.Wet bulb ultimate compression strength 1.0～2.5kg/, wet bulb is stacked naturally top loam cake straw cloth, carry out maintenance, make its seasoning, curing time 70 hours is more than the dry bulb ultimate compression strength 8～15kg/ after the seasoning, build heap with dry bulb, pile high 4～6m, drip with the high iron solution that contains ore-leaching bacteria and drench the ore deposit heap, carry out biology and leach, leach liquor pH1.7～2.0, qualified leach liquor enters the metal recovery operation; Metal ion in the qualified leach liquor adopts the extraction-electrodeposition process or the precipitator method to reclaim.
Advantage of the present invention: this technology is easy, is suitable for being difficult to the sulphide concentrate and the mine tailing of balling-up, and used binding agent source is wide, the growth of leaching microbacteria and the leaching of metal all there is not influence, pelletizing has enough intensity, can make to build to pile to have good penetration, and guarantee not cave in, subside.
Claims (6)
1, a kind of granulation process that is applicable to biological dump leaching and extracting metal, it is characterized in that: it may further comprise the steps:
(1) get the raw materials ready: the breeze that will be used for biological dump leaching and extracting metal mixes with binding agent, and this binding agent is carboxymethyl cellulose, starch or papermaking wastewater.
(2) granulation: with the material granulation in pelletizer in (1), the granularity of finished ball is 5～25mm;
(3) maintenance: top loam cake straw cloth, make its seasoning, obtain dry bulb.
2, the granulation process that is applicable to biological dump leaching and extracting metal according to claim 1 is characterized in that: when described binding agent used separately, its consumption was pressed the weight percent meter of breeze, and wherein carboxymethyl cellulose 0.01～2%; Starch 0.01～3%; Papermaking wastewater 0.5～8%.
3, the granulation process that is applicable to biological dump leaching and extracting metal according to claim 1 is characterized in that: when described binding agent was two or more, its consumption was pressed the weight percent meter of breeze, and its consumption is 0.02%-1%.
4, according to claim 1 or the 2 or 3 described granulation processs that are applicable to biological dump leaching and extracting metal, it is characterized in that: described breeze is the breeze of fine ore, concentrate or the mine tailing of sulphide ores, and is pulp; When binding agent mixes with breeze, need add the breeze weight percent and be 6～10% water.
5, the granulation process that is applicable to biological dump leaching and extracting metal according to claim 4, it is characterized in that: in the described granulating working procedure, adopting the disk tilt angle of pelletizing disks is 40～65 °, disc rotation speed 80～150r/min, spray water in the granulation makes ball moisture content reach 8～12% weight percentage.
6, the granulation process that is applicable to biological dump leaching and extracting metal according to claim 4, it is characterized in that: in the described granulating working procedure, adopt the granulation of granulation drum mixer, the inclination angle of cylinder is 12～15 °, rotating speed 30～80r/min, spray water in the granulation makes ball moisture content reach 8～10% weight percentage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021288372A CN1309848C (en) | 2002-08-15 | 2002-08-15 | Pellelizing technology suitable for biological dump leaching and extracting metal |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB021288372A CN1309848C (en) | 2002-08-15 | 2002-08-15 | Pellelizing technology suitable for biological dump leaching and extracting metal |
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| CN1475584A CN1475584A (en) | 2004-02-18 |
| CN1309848C true CN1309848C (en) | 2007-04-11 |
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| CNB021288372A Expired - Fee Related CN1309848C (en) | 2002-08-15 | 2002-08-15 | Pellelizing technology suitable for biological dump leaching and extracting metal |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105506272A (en) * | 2015-12-11 | 2016-04-20 | 北京科技大学 | Pelletizing method suitable for heap leaching of gold ores |
| CN105907955A (en) * | 2016-06-17 | 2016-08-31 | 武汉钢铁股份有限公司 | Inorganic binder for oxidized pellets and manufacturing method |
| CN106282551B (en) * | 2016-09-18 | 2018-03-13 | 深圳市如茵生态环境建设有限公司 | A kind of granulation heap leaching method of shale and low-grade difficult fine ore |
| CN110195154A (en) * | 2019-06-18 | 2019-09-03 | 中国科学院过程工程研究所 | A kind of mercury tailing forming method for dump leaching |
| CN111893298B (en) * | 2020-08-20 | 2021-11-30 | 核工业北京化工冶金研究院 | Heap leaching treatment process for low-grade uranium ore rich in gypsum |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4069119A (en) * | 1976-05-14 | 1978-01-17 | Continental Oil Company | Copper recovery by leaching and ion exchange |
| CN1047887A (en) * | 1989-06-07 | 1990-12-19 | 德鲁化学公司 | From ore, reclaim noble metal |
| SU693980A1 (en) * | 1977-08-02 | 1991-10-30 | Химико-металлургический институт АН КазССР | Method of preparing copper concentrate to pyrrometallurgical treatment |
| CN1101948A (en) * | 1994-06-29 | 1995-04-26 | 四川联合大学 | Method for Improving Cyanide Leach Rate and Recovery Rate of Carbonaceous Gold Ore with Composite Inhibitor |
-
2002
- 2002-08-15 CN CNB021288372A patent/CN1309848C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4069119A (en) * | 1976-05-14 | 1978-01-17 | Continental Oil Company | Copper recovery by leaching and ion exchange |
| SU693980A1 (en) * | 1977-08-02 | 1991-10-30 | Химико-металлургический институт АН КазССР | Method of preparing copper concentrate to pyrrometallurgical treatment |
| CN1047887A (en) * | 1989-06-07 | 1990-12-19 | 德鲁化学公司 | From ore, reclaim noble metal |
| CN1101948A (en) * | 1994-06-29 | 1995-04-26 | 四川联合大学 | Method for Improving Cyanide Leach Rate and Recovery Rate of Carbonaceous Gold Ore with Composite Inhibitor |
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