CN103194612A - Advanced treatment technology for bottom blowing smelting smoke dust - Google Patents
Advanced treatment technology for bottom blowing smelting smoke dust Download PDFInfo
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- CN103194612A CN103194612A CN2013101310570A CN201310131057A CN103194612A CN 103194612 A CN103194612 A CN 103194612A CN 2013101310570 A CN2013101310570 A CN 2013101310570A CN 201310131057 A CN201310131057 A CN 201310131057A CN 103194612 A CN103194612 A CN 103194612A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention provides an advanced treatment technology for bottom blowing smelting smoke dust. The advanced treatment technology comprises the following steps of: (1) primary acid leaching oxidation: adding water into the smoke dust for making pulp, then adding acid for adjusting the PH value to be less than 1, adding an oxidant and mixing fully for leaching for at least half an hour; (2) primary filter pressing: filter pressing ore pulp generated through leaching so as to obtain leached copper liquor and leached residue; (3) secondary acid leaching oxidation; (4) secondary filter pressing; (5) arsenic removal through oxidation and filter pressing; and (6) extraction electrodeposition, wherein the filtrate with arsenic removed is copper sulfate liquor, after copper is extracted and gathered through a copper extraction system, the liquor rich in copper is returned to a copper electrolysis system for generating cathode copper through electrodeposition. The technology is simple, is stable in operation and is convenient to control; the rate of multipurpose utilization for resource is high, and gold, silver, copper and lead are all recycled; the recycling cost is low; the recovery of copper is improved; arsenic is finally removed and turned into a product through pretreatment, so that the environment protection risk is lowered.
Description
Technical field:
The present invention relates to the comprehensive utilization of resources technical field, is that a kind of flue dust that bottom-blown smelting is produced carries out advanced treatment specifically, comprehensively reclaims the method for metals such as copper, gold and silver, lead.
Background technology:
The collected smoke dust that gets off of bottom blowing copper metallurgy contains valuable elements such as gold and silver, copper, lead, zinc, arsenic.Normally returning original system handles, but increased the internal circulating load of smelting procedure flue dust and caused the enrichment of detrimental impurity such as lead, zinc, at present the main methods of such flue dust is first pre-treatment copper removal and arsenic, reaches after the refining splicer skill condition by joining the ore deposit to make sulfonium at the refining lead system and reclaim lead, gold and silver etc.The pre existing treatment technology just adopts water or sulfuric acid to leach smoke dust, make soluble salt strippings such as copper, zinc, cadmium, arsenic, but this method copper leaching rate is low, part copper exists acidleach not come out with sulphided form, simultaneously arsenic also can't reclaim, and causes that the enrichment of arsenic influences copper electrodeposition effect in the leach liquor.
Summary of the invention:
The objective of the invention is to overcome the deficiency of above-mentioned prior art, and a kind of deep treatment method of bottom-blown smelting smoke dust is provided, improve the rate of recovery of copper, realize efficient comprehensive recovery of valuable metal in the bottom-blown smelting smoke dust.
In order to achieve the above object, the present invention is achieved in that a kind of advanced treatment process of bottom-blown smelting smoke dust, and it comprises following processing step:
(1), an acidleach oxidation: smoke dust is added the water pulping, add acid then and transfer pH value less than 1, add the abundant agitation leach of oxygenant again, the control of assurance extraction temperature is stirred half hour at 80-90 ℃;
(2), a press filtration: leach the ore pulp of generation through press filtration, obtain leaching copper liquid and one and soak slag;
(3), secondary pickling oxidation: be the leaching effect that guarantees, soak slag with and carry out the secondary pickling oxidation;
(4), secondary press filtration: two soak ore pulp through obtaining the finishing slag of secondary leaching copper liquid and enriched lead, gold and silver after the press filtration, and this finishing slag is delivered to plumbous smeltery and joined valuable elements such as ore deposit recovery gold and silver, lead;
(5), oxidation arsenic removal press filtration: twice leaching copper liquid is after sedimentation, underflow send the secondary press filtration, supernatant liquor is through overregulating pH value to 2.5-3, add ferrous sulfate ventilation oxidation, arsenic in the solution is precipitated, obtain the compound filter cake of arsenic by press filtration, enter two-stage roasting arsenic collecting technology and reclaim arsenic by joining the ore deposit, filtrate is to the copper extraction electrodeposition;
(6), extraction electrodeposition: the filtrate after the arsenic removal is copper sulfate solution, and with after the copper extraction, the copper rich solution returns to cupric electrolysis system electrodeposition and produces cathode copper by copper extraction system, carry copper after waste liquid send Sewage treatment systems to adopt electrochemical process to handle;
Described oxygenant is hydrogen peroxide or sodium chlorate.
Compared with the prior art the advanced treatment process of a kind of bottom-blown smelting smoke dust of the present invention has outstanding substantive distinguishing features and marked improvement: 1, the processing unit configuration is simple, and stable operation is convenient to control; 2, comprehensive utilization of resources rate height, gold and silver, copper, lead, arsenic etc. have all obtained recycling; 3, cost recovery is low, has very high economic worth; 4, by adding oxygenant, the sulfide of copper is efficiently leached, improved the rate of recovery of copper greatly; 5, by the pre-treatment to arsenic, arsenic removes and becomes product the most at last, reduces the environmental protection risk.
Description of drawings
Fig. 1 is process flow sheet of the present invention.
Embodiment
In order to understand better and to implement, describe the advanced treatment process of a kind of bottom-blown smelting smoke dust of the present invention in detail below in conjunction with embodiment: 2t smoke dust (composition sees table 1 for details) adding is filled in the reactor of 4m3 water, be warming up to 85 ℃, add sulfuric acid and regulate assurance sulfuric acid concentration 10g/l, stirring reaction 30min, add the abundant agitation leach of hydrogen peroxide 100kg, guarantee that the oxidation extraction time reaches half hour; 2, the ore pulp press filtration after will leaching obtains leaching copper liquid 3.6m3 and an acid leaching residue; 3, an acid leaching residue is unloaded to accepting in the steel basin, adopt with one and soak same temperature, acidity, oxygenant, acidleach 30min; 4, with after the press filtration of secondary pickling ore pulp process, obtain secondary and leach copper liquid 3.6m3, and finishing slag plumbous, the gold and silver enrichment, slag is washed in pressure filter with clear water, and water consumption 4m3 obtains moisture clean slag 2t, this slag can be delivered to bottom blowing lead refinery, joins the ore deposit and reclaims valuable elements such as gold and silver, lead; 5, washing water and twice leach liquor are total to 11.2m3, through after the sedimentation, discharging supernatant liquor 5m3, add magnesium oxide and regulate pH value to 3, in the roots blower air blast simultaneously, add iron vitriol 355kg, reaction 30min, to react back slurry press filtration, obtain the compound filter cake of arsenic, this filter cake will be carried out two-stage roasting arsenic collecting technology recovery arsenic As by joining the ore deposit
2O
3, filtrate to copper extracts; 6, the filtrate 5m3 after the arsenic removal, with copper extraction, enrichment, it is 25% that extractant concentration is adopted in extraction, i.e. M5649 and 260 by copper extraction system
#The volume ratio of kerosene is compared O:A=1.8:1, and back extraction is the sulphuric acid soln of 260g/l with acid, obtains the copper sulfate rich solution and returns to the cupric electrolysis system, produces cathode copper, its constituent content such as table 1 and table 2 through electrodeposition.
The embodiment effect sees Table 1, table 2
Table 1 smoke dust leaches table as a result
Table 2 electric dust leaches comprehensive liquid analysis
By above-mentioned two tables, can find out that the copper leaching rate of the implementation case reaches 97.72%, the slag rate is 60%, than the copper leaching rate raising 5% of traditional technology; By arsenic removal technology, can realize that 90.1% arsenic is removed to slag, final two-stage roasting becomes the product white arsenic, reaches the purpose of comprehensive recovery; Metals such as gold and silver, lead are become to contain the precious metal lead ore concentrate by enrichment simultaneously, significantly reduce pyrometallurgical smelting and extract plumbous treatment capacity, have reduced cost.
Claims (2)
1. the advanced treatment process of a bottom-blown smelting smoke dust is characterized in that it comprises following processing step:
(1), an acidleach oxidation: smoke dust is added the water pulping, add acid then and transfer pH value less than 1, add the abundant agitation leach of oxygenant again, the control of assurance extraction temperature is stirred half hour at 80-90 ℃;
(2), a press filtration: leach the ore pulp of generation through press filtration, obtain leaching copper liquid and one and soak slag;
(3), secondary pickling oxidation: be the leaching effect that guarantees, soak slag with and carry out the secondary pickling oxidation;
(4), secondary press filtration: two soak ore pulp through obtaining the finishing slag of secondary leaching copper liquid and enriched lead, gold and silver after the press filtration, and this finishing slag is delivered to plumbous smeltery and joined valuable elements such as ore deposit recovery gold and silver, lead;
(5), oxidation arsenic removal press filtration: twice leaching copper liquid is after sedimentation, underflow send the secondary press filtration, supernatant liquor is through overregulating pH value to 2.5-3, add ferrous sulfate ventilation oxidation, arsenic in the solution is precipitated, obtain the compound filter cake of arsenic by press filtration, enter two-stage roasting arsenic collecting technology and reclaim arsenic by joining the ore deposit, filtrate is to the copper extraction electrodeposition;
(6), extraction electrodeposition: the filtrate after the arsenic removal is copper sulfate solution, and with after the copper extraction, the copper rich solution returns to cupric electrolysis system electrodeposition and produces cathode copper by copper extraction system, carry copper after waste liquid send Sewage treatment systems to adopt electrochemical process to handle.
2. the advanced treatment process of a kind of bottom-blown smelting smoke dust according to claim 1 is characterized in that described oxygenant is hydrogen peroxide or sodium chlorate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101310570A CN103194612A (en) | 2013-04-16 | 2013-04-16 | Advanced treatment technology for bottom blowing smelting smoke dust |
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| CN2013101310570A CN103194612A (en) | 2013-04-16 | 2013-04-16 | Advanced treatment technology for bottom blowing smelting smoke dust |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551025A (en) * | 2013-08-27 | 2014-02-05 | 昆明理工大学 | Harmless treatment method of arsenic-containing flue dust |
| CN103981369A (en) * | 2014-05-07 | 2014-08-13 | 西北矿冶研究院 | Comprehensive recovery process for multiple metals in arsenic-containing soot |
| CN106191452A (en) * | 2016-09-28 | 2016-12-07 | 江苏理工学院 | A kind of method preparing Red copper oxide for raw materials recovery with copper scrap tungsten alloy |
| CN106834704A (en) * | 2016-11-18 | 2017-06-13 | 河南中原黄金冶炼厂有限责任公司 | A kind of white cigarette dirt valuable metal recovery and the method for harmless treatment |
| CN113913624A (en) * | 2020-07-10 | 2022-01-11 | 西南科技大学 | Method for resource recovery of copper in reclaimed copper smelting dust |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851497A (en) * | 2012-09-21 | 2013-01-02 | 北京矿冶研究总院 | Method for treating arsenic-containing material |
-
2013
- 2013-04-16 CN CN2013101310570A patent/CN103194612A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851497A (en) * | 2012-09-21 | 2013-01-02 | 北京矿冶研究总院 | Method for treating arsenic-containing material |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551025A (en) * | 2013-08-27 | 2014-02-05 | 昆明理工大学 | Harmless treatment method of arsenic-containing flue dust |
| CN103981369A (en) * | 2014-05-07 | 2014-08-13 | 西北矿冶研究院 | Comprehensive recovery process for multiple metals in arsenic-containing soot |
| CN103981369B (en) * | 2014-05-07 | 2016-04-13 | 西北矿冶研究院 | Comprehensive recovery process for multiple metals in arsenic-containing soot |
| CN106191452A (en) * | 2016-09-28 | 2016-12-07 | 江苏理工学院 | A kind of method preparing Red copper oxide for raw materials recovery with copper scrap tungsten alloy |
| CN106834704A (en) * | 2016-11-18 | 2017-06-13 | 河南中原黄金冶炼厂有限责任公司 | A kind of white cigarette dirt valuable metal recovery and the method for harmless treatment |
| CN113913624A (en) * | 2020-07-10 | 2022-01-11 | 西南科技大学 | Method for resource recovery of copper in reclaimed copper smelting dust |
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Application publication date: 20130710 |