CN104263910A - Process of treating high-arsenic ores by branched streaming and oxidative countercurrent washing arsenic-removal - Google Patents
Process of treating high-arsenic ores by branched streaming and oxidative countercurrent washing arsenic-removal Download PDFInfo
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Abstract
The invention discloses a process of treating branched streaming and oxidative countercurrent washing arsenic-removal. The process comprises the following steps: grinding ores and grading, removing reagent and washing, performing first-stage arsenic removal oxidization, performing liquid-phase arsenic balance, filter-pressing and washing and subsequently oxidizing the first-stage arsenic removal oxidization slag, wherein the gold grade of the oxidative slag is 140g/t which is improved by 25% in comparison with 112g/t of the gold concentrate grade; high-arsenic-resistant bacteria is utilized, so that the removal rate of the arsenic is over 96%, the removal rate for iron and sulfur is 81% and the recovery rate of the oxidative slag is 95%.
Description
Technical field
The present invention relates to a kind of branch crossfire oxidation countercurrent washing dearsenification process height arsenic minerals technique, belong to field of metallurgy.
Background technology
For the high sale present situation in golden gold ore market of domestic high arsenic and the limitation for the treatment of process, improve the selecting and smelting recovery rate of the high golden gold ore of high arsenic, expand the market outlook of high arsenic fine gold ore, just need to seek a kind of pretreated technique being more suitable for the high golden gold ore of high arsenic, domestic existing pyrogenic process gold extracting shop only has about 82% for two sections of high arsenic minerals and even the decreasing ratio of three sections of roasting pretreatment techniques to arsenic, the calcining rate of recovery of high arsenic minerals also only has 85%, unsatisfactory, microbiological oxidation pretreatment technology requires higher to process raw ore containing arsenic, the raw ore arsenic grade of process maintains about 4.5%, if raw ore is containing the too high activity that will affect bacterial classification of arsenic, bio-oxidation pretreating effect cannot ensure, but, very large development potentiality is also there is in bio-oxidation preconditioning technique in high arsenic minerals process, the resistance to arsenic of bacterium and temperature tolerance can strengthen gradually in the long-term domestication of bacterial classification and bacterial classification evolution escalation process.
The bio-oxidation preconditioning technique of high arsenic fine gold ore ([As]=8%-20%) is still in conceptual phase at home, also do not drop into industrial applications, domestic pyrogenic process factory two sections of generally applying or three sections of roastings still cannot accomplish the end in view to high arsenic minerals dearsenification, bio-oxidation preconditioning technique has very large development potentiality in high arsenic minerals process, the resistance to arsenic of bacterium and temperature tolerance strengthen gradually in from now on to the long-term domestication of bacterial classification and evolution escalation process, have very large prospect to the biological oxygen pre-treatment suitability for industrialized production realizing high arsenic minerals further.
Existing technique requires higher to process raw material containing arsenic, gold ore is too high unsuitable oxidized with existing processing condition containing arsenic, and then the rate of recovery can be caused on the low side, the rate of recovery only has about 85%, produces ton ore deposit cost and buys the index contrast economic benefit not obvious of valuating.
Summary of the invention
Object of the present invention aims to provide a kind of branch crossfire oxidation countercurrent washing dearsenification process height arsenic minerals technique, improves the selecting and smelting recovery rate of the high golden gold ore of high arsenic, improves oxidation efficiency, reduce production cost.
For achieving the above object, the whole process of branch of the present invention crossfire oxidation countercurrent washing dearsenification process height arsenic minerals technique is as follows:
1. grind grading: high arsenic fine gold ore is by ball mill and hierarchy system fine grinding classification before bio-oxidation pre-treatment, and make the fineness of high arsenic fine gold ore reach-325 orders, thin ore deposit accounts for 95%;
2. reagent removal washing: the lower concentration pulp conveying after grind grading is in ￠ 12m thickener, by thickener solid-liquid separation, overflow water takes the flotation reagent contained in gold ore out of, and the underflow ore pulp of more than 50% concentration drains into surge tank, dilution is sized mixing, and controls pulp density 18%;
3. one section of dearsenification oxidation: quantitative for the ore pulp of concentration stabilize continuous print is inserted in one section of dearsenification oxidation trough (￠ 8*8.5m), introduce by the 20%-30% of pulp volume amount in the stair oxidation groove in subsequent oxidation flow process containing bacterium (thiobacillus ferrooxidant, thiobacillus thiooxidans, the micro-spirobacteria of iron protoxide) ore pulp carries out bacterial oxidation to high arsenic minerals, redox potential maintains 550mv, the arsenic grade of high arsenic minerals one section of dearsenification oxidation sludge is down to 2% by 13%, Iron grade is down to 5% by 18%, sulphur grade is down to 5% by 11%, the oxidation ratio of arsenic iron sulphur reaches 83.33% respectively, 72.22%, 54.54%, the sulfide of trapping gold in gold ore, arsenide are by being that liquid phase makes gold dissociate out by solid transformation after bacterial degradation and chemical action, and the gold grade of oxidation sludge reaches 140g/t, improves 25% than the 112g/t of gold ore grade,
4. liquid phase arsenic balance: maintain one section of dearsenification oxidizing reaction, need the grade of the liquid phase arsenic in controlled oxidization groove, liquid phase arsenic grade maintains a reasonable value and As=13g/m all the time
3, the too high meeting breeding of anti-bacteria of liquid phase arsenic and the activity of bacterial classification;
5. the press filtration washing of one section of dearsenification oxidation sludge: one section of dearsenification oxidation sludge and As=2%, Fe=5%, S=5% are delivered to surge tank after pressure filter solid-liquid separation, filter cake enters surge tank and adds clear water and lime washing neutralization, when PH=7, (PH=1.3 of one section of dearsenification oxidation sludge) enters back segment operation, and oxidation solution carries out neutralization precipitation and enters tailings storehouse;
6. subsequent oxidation: one section of dearsenification oxidation sludge is delivered to subsequent oxidation system and carries out firsts and seconds oxidation, the final oxidation sludge of output, the arsenic iron sulphur grade of oxidation sludge is down to 0.5%, 3.39%, 2% respectively, the decreasing ratio of arsenic reaches more than 96%, iron, sulfur removal rate reach 81%, and the rate of recovery of oxidation sludge reaches 95%.
Branch of the present invention crossfire oxidation countercurrent washing dearsenification process height arsenic minerals technique compared with prior art has following excellent effect.
Adopt branch's crossfire oxidation countercurrent washing dearsenification process height arsenic minerals technique, the trapping gold of high arsenic fine gold ore is made to dissociate out fully, the gold grade of one section of dearsenification oxidation sludge reaches 140g/t, 25% is improve than the 112g/t of gold ore grade, the decreasing ratio of arsenic is made to reach more than 96%, iron, sulfur removal rate reach 81%, comprehensive recovery reaches 95%, coming into operation of this technique, pull domestic high arsenic fine gold ore market domestic demand, process for domestic high arsenic fine gold ore provides a kind of new approaches and new technology, more brings good economic benefit to enterprise.
Embodiment
Below branch of the present invention crossfire oxidation countercurrent washing dearsenification process height arsenic minerals technique is described in further details.
1. grind grading: high arsenic fine gold ore is by ball mill and hierarchy system fine grinding classification before bio-oxidation pre-treatment, and make the fineness of high arsenic fine gold ore reach-325 orders, thin ore deposit accounts for 95%, guarantees that arsenic iron sulfur oxidation rate is up to standard.
2. reagent removal washing: the lower concentration pulp conveying after grind grading is in ￠ 12m thickener, by thickener solid-liquid separation, overflow water takes the flotation reagent contained in gold ore out of, and the underflow ore pulp of more than 50% concentration drains into surge tank, dilution is sized mixing, and controls pulp density 18%.
3. one section of dearsenification oxidation: quantitative for the ore pulp of concentration stabilize continuous print is inserted in one section of dearsenification oxidation trough (￠ 8*8.5m), introduce by the 20%-30% of pulp volume amount in the stair oxidation groove in subsequent oxidation flow process containing bacterium (thiobacillus ferrooxidant, thiobacillus thiooxidans, the micro-spirobacteria of iron protoxide) ore pulp is oxidized high arsenic minerals, redox potential maintains 550mv, the arsenic grade of high arsenic minerals one section of dearsenification oxidation sludge is down to 2% by 13%, Iron grade is down to 5% by 18%, sulphur grade is down to 5% by 11%, the oxidation ratio of arsenic iron sulphur reaches 83.33% respectively, 72.22%, 54.54%, the sulfide of trapping gold in gold ore, arsenide are by being that liquid phase makes gold dissociate out by solid transformation after bacterial degradation and chemical action, and the gold grade of oxidation sludge reaches 140g/t, improves 25% than the 112g/t of gold ore grade.
4. liquid phase arsenic balance: maintain one section of dearsenification oxidizing reaction, need the grade of the liquid phase arsenic in controlled oxidization groove, liquid phase arsenic grade maintains a reasonable value and As=13g/m all the time
3, liquid phase arsenic is too high can the breeding of anti-bacteria and the activity of bacterial classification.
5. the press filtration washing of one section of dearsenification oxidation sludge: one section of dearsenification oxidation sludge and As=2%, Fe=5%, S=5% are delivered to surge tank after pressure filter solid-liquid separation, filter cake enters surge tank and adds clear water and lime washing neutralization, when PH=7, (PH=1.3 of one section of dearsenification oxidation sludge) enters back segment operation, and oxidation solution carries out neutralization precipitation and enters tailings storehouse.
6. subsequent oxidation: one section of dearsenification oxidation sludge is delivered to subsequent oxidation system and carries out firsts and seconds oxidation, the final oxidation sludge of output, the arsenic iron sulphur grade of oxidation sludge is down to 0.5%, 3.39%, 2% respectively, the decreasing ratio of arsenic reaches more than 96%, iron, sulfur removal rate reach 81%, and the rate of recovery of oxidation sludge reaches 95%.
Claims (1)
1. branch's crossfire oxidation countercurrent washing dearsenification process height arsenic minerals technique, is characterized in that
(1) grind grading: high arsenic fine gold ore is by ball mill and hierarchy system fine grinding classification before bio-oxidation pre-treatment, and make the fineness of high arsenic fine gold ore reach-325 orders, thin ore deposit accounts for 95%, guarantees that arsenic iron sulfur oxidation rate is up to standard.
(2) reagent removal washing: the lower concentration pulp conveying after grind grading is in ￠ 12m thickener, by thickener solid-liquid separation, overflow water takes the flotation reagent contained in gold ore out of, and the underflow ore pulp of more than 50% concentration drains into surge tank, dilution is sized mixing, and controls pulp density 18%.
(3) one sections of dearsenification oxidations: quantitative for the ore pulp of concentration stabilize continuous print is inserted in one section of dearsenification oxidation trough (￠ 8*8.5m), introduce by the 20%-30% of pulp volume amount in the stair oxidation groove in subsequent oxidation flow process containing bacterium (thiobacillus ferrooxidant, thiobacillus thiooxidans, the micro-spirobacteria of iron protoxide) ore pulp carries out bacterial oxidation to high arsenic minerals, redox potential maintains 550mv, the arsenic grade of high arsenic minerals one section of dearsenification oxidation sludge is down to 2% by 13%, Iron grade is down to 5% by 18%, sulphur grade is down to 5% by 11%, the oxidation ratio of arsenic iron sulphur reaches 83.33% respectively, 72.22%, 54.54%, the sulfide of trapping gold in gold ore, arsenide are by being that liquid phase makes gold dissociate out by solid transformation after bacterial degradation and chemical action, and the gold grade of oxidation sludge reaches 140g/t, improves 25% than the 112g/t of gold ore grade.
(4) liquid phase arsenic balance: maintain one section of dearsenification oxidizing reaction, need the grade of the liquid phase arsenic in controlled oxidization groove, liquid phase arsenic grade maintains a reasonable value and As=13g/m all the time
3, liquid phase arsenic is too high can the breeding of anti-bacteria and the activity of bacterial classification.
The press filtration washing of (5) one sections of dearsenification oxidation sludges: one section of dearsenification oxidation sludge and As=2%, Fe=5%, S=5% are delivered to surge tank after pressure filter solid-liquid separation, filter cake enters surge tank and adds clear water and lime washing neutralization, when PH=7, (PH=1.3 of one section of dearsenification oxidation sludge) enters back segment operation, and oxidation solution carries out neutralization precipitation and enters tailings storehouse.
(6) subsequent oxidation: one section of dearsenification oxidation sludge is delivered to subsequent oxidation system and carries out firsts and seconds oxidation, the final oxidation sludge of output, the arsenic iron sulphur grade of oxidation sludge is down to 0.5%, 3.39%, 2% respectively, the decreasing ratio of arsenic reaches more than 96%, iron, sulfur removal rate reach 81%, and the rate of recovery of oxidation sludge reaches 95%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714126A (en) * | 2016-02-02 | 2016-06-29 | 青岛智瑞生物有限公司 | Branch biological oxidation technology for high-arsenic and high-sulfur gold concentrate |
| CN111778185A (en) * | 2020-07-01 | 2020-10-16 | 江西三和金业有限公司 | Composite microbial agent and application thereof, and biological oxidation dearsenification and desulfurization pretreatment method for arsenic gold concentrate |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1215758A (en) * | 1998-01-25 | 1999-05-05 | 地矿部矿业生物工程研究中心 | Method for bacteria preoxidation extraction of gold from refractory high-arsenic gold-ore and bacteria oxidation tank used |
| CN1362528A (en) * | 2001-01-08 | 2002-08-07 | 冶金工业部长春黄金研究院 | Two-section bacteria oxidation process to extract gold |
| CN1410563A (en) * | 2002-11-06 | 2003-04-16 | 山东天承生物金业股份有限公司 | Biological gold extraction method of difficult separation concentrate and special equipment |
| RU2222621C2 (en) * | 2002-01-30 | 2004-01-27 | Институт микробиологии РАН | Method of processing sulfide gold-and-arsenic concentrates |
| RU2261928C1 (en) * | 2004-04-02 | 2005-10-10 | Совмен Хазрет Меджидович | Method of processing of persistent gold-arsenic ores and concentrates |
| CN101285126A (en) * | 2008-06-05 | 2008-10-15 | 长春黄金研究院 | Gold extraction process with low pollution and high recovery for refractory gold concentrate |
| CN101333599A (en) * | 2008-04-30 | 2008-12-31 | 东北大学 | Cyanidation aurum-extracting method for preprocessing high-arsenic complex refractory gold ore by oxidation with arsenic resistant strains |
| CN102031390A (en) * | 2010-12-23 | 2011-04-27 | 紫金矿业集团股份有限公司 | Process for extracting gold from low-grade difficultly-treatable gold ore containing arsenic and carbon |
| CN103911509A (en) * | 2012-12-28 | 2014-07-09 | 北京有色金属研究总院 | Two-stage biological pre-oxidation gold extraction process for Carlin-type gold deposit by two exclusive ore-leaching bacteria |
-
2014
- 2014-09-03 CN CN201410462509.8A patent/CN104263910B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1215758A (en) * | 1998-01-25 | 1999-05-05 | 地矿部矿业生物工程研究中心 | Method for bacteria preoxidation extraction of gold from refractory high-arsenic gold-ore and bacteria oxidation tank used |
| CN1362528A (en) * | 2001-01-08 | 2002-08-07 | 冶金工业部长春黄金研究院 | Two-section bacteria oxidation process to extract gold |
| RU2222621C2 (en) * | 2002-01-30 | 2004-01-27 | Институт микробиологии РАН | Method of processing sulfide gold-and-arsenic concentrates |
| CN1410563A (en) * | 2002-11-06 | 2003-04-16 | 山东天承生物金业股份有限公司 | Biological gold extraction method of difficult separation concentrate and special equipment |
| RU2261928C1 (en) * | 2004-04-02 | 2005-10-10 | Совмен Хазрет Меджидович | Method of processing of persistent gold-arsenic ores and concentrates |
| CN101333599A (en) * | 2008-04-30 | 2008-12-31 | 东北大学 | Cyanidation aurum-extracting method for preprocessing high-arsenic complex refractory gold ore by oxidation with arsenic resistant strains |
| CN101285126A (en) * | 2008-06-05 | 2008-10-15 | 长春黄金研究院 | Gold extraction process with low pollution and high recovery for refractory gold concentrate |
| CN102031390A (en) * | 2010-12-23 | 2011-04-27 | 紫金矿业集团股份有限公司 | Process for extracting gold from low-grade difficultly-treatable gold ore containing arsenic and carbon |
| CN103911509A (en) * | 2012-12-28 | 2014-07-09 | 北京有色金属研究总院 | Two-stage biological pre-oxidation gold extraction process for Carlin-type gold deposit by two exclusive ore-leaching bacteria |
Non-Patent Citations (1)
| Title |
|---|
| 吕卫强: "难处理金精矿连续生物氧化—炭浸提金研究", 《矿产保护与利用》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714126A (en) * | 2016-02-02 | 2016-06-29 | 青岛智瑞生物有限公司 | Branch biological oxidation technology for high-arsenic and high-sulfur gold concentrate |
| CN111778185A (en) * | 2020-07-01 | 2020-10-16 | 江西三和金业有限公司 | Composite microbial agent and application thereof, and biological oxidation dearsenification and desulfurization pretreatment method for arsenic gold concentrate |
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| CN104263910B (en) | 2016-06-08 |
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