CN107267773A - A kind of improved method for improving fired slags gold recovery - Google Patents
A kind of improved method for improving fired slags gold recovery Download PDFInfo
- Publication number
- CN107267773A CN107267773A CN201710434207.3A CN201710434207A CN107267773A CN 107267773 A CN107267773 A CN 107267773A CN 201710434207 A CN201710434207 A CN 201710434207A CN 107267773 A CN107267773 A CN 107267773A
- Authority
- CN
- China
- Prior art keywords
- roasting
- gold
- burner
- flue gas
- improved method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/08—Obtaining noble metals by cyaniding
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B30/00—Obtaining antimony, arsenic or bismuth
- C22B30/04—Obtaining arsenic
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The present invention relates to a kind of improved method for improving fired slags gold recovery, specifically include：Two grades of roaster roastings are reentered to the mine dust that flue dust is produced after dedusting after one-level roasting, two grades of roastings, roastings, sintering temperature is controlled at 640 ~ 660 DEG C, roasting time ＞ 0.5h, compared in the smelting process of traditional gold concentrate, the golden rate of recovery of the fired slags of the present invention is up to more than 85%, and the rate of recovery of traditional roasting technique is between 50% 60%, improved method in the present invention substantially increases the rate of recovery of valuable metal metallic gold, and operation is simple and feasible and reduces the waste of resource.
Description
Technical field
The present invention relates to chemical metallurgy technical field, specifically a kind of improvement side for improving fired slags gold recovery
Method.
Background technology
At present, for the smelting of high arsenic gold ores containing sulfur, general using two-stage calcination processing, two-stage calcination can not only be very
Good this problem of solution dearsenification desulfurization, can also convert the arsenic trioxide produced when being calcined the white arsenic product of powdering, both
Purpose free from environmental pollution and that comprehensive reutilization can be reached.Typical two-stage roasting technological process is:After raw material is by sizing mixing
Beat and enter roaster fluidized bed roasting to one section of roaster furnace roof distributor, one section of roasting hearth deslagging to two sections of oxidation furnace is roasted
Burn, after two sections of oxidation kiln gas of one section of flue gas after cyclone dust collection and through cyclone dust collection deliver to cottrell purification together, then
Temperature adjustment tower is cooled down into provided with atomizing water nozzle, flue gas enters cloth bag receipts arsenic device after temperature adjustment, receive flue gas after arsenic and go relieving haperacidity.
But existing two-stage calcination is there is also certain deficiency, wherein the amount of dust that one section of roaster is taken away with flue gas is
The 15%--30% of total quantity of slag.By repeatedly inspection, this part mine dust sulphur removal, arsenic removal, except carbon effect it is not good, cause this part ore deposit
The valuable metals such as the gold of dirt（Mainly gold, silver）The rate of recovery it is relatively low.
The content of the invention
The technical problems to be solved by the invention, which are to provide, a kind of can effectively improve the improvement side of gold recovery in gold concentrate
Method, energy-conserving and environment-protective, it is possible to increase the rate of recovery of valuable element gold, and with significant economic benefit.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of improvement side for improving fired slags gold recovery
Method, comprises the following steps：
1）Gold concentrate is chosen, organizes with slurry with adjusting pulp density；
2）By step 1）Flowsheet of slurry agitation uniformly spray into one-level reduction furnace afterwards and carry out reduction roasting, the baking flue gas of output enters the
One cyclone dust collectors dedusting, the flue gas discharged after dedusting enters the second cyclone dust collectors dedusting, enters back into the first burner-gas cooler
Cooled；
3）Step 2）The mine dust that the calcining and the first cyclone dust collectors of reduction roasting discharge are collected is calcined into secondary oxidation stove, row
The ash-laden gas gone out enters the cooling of the second burner-gas cooler and gathered dust；
4）By step 3）The calcining that middle process secondary oxidation stove roasting is produced is delivered to acidleach workshop section by embedded scraper transporter, most
By cyaniding, Refining output finished product gold, step 2）In the first burner-gas cooler and step 3）Second burner-gas cooler is discharged
Flue gas collect after gathered dust into electric cleaner；
5）Step 4）The flue gas of middle electric cleaner discharge is changed into solid-state by the gaseous state arsenic being quenched in tower cooler quick refrigeration, flue gas
Arsenic, receives arsenic device through cloth bag and reclaims arsenic trioxide, the flue gas of removing arsenic trioxide enters acid making system；
6）Step 2) in the first burner-gas cooler, step 3）The second burner-gas cooler and step 4）The mine dust that electric cleaner is reclaimed
It is delivered to by wind model equipment in secondary oxidation stove and carries out after baking, the calcining and ash-laden gas produced after roasting is again
Into step 4）.
It is used as preferred, step 1）Described in gold concentrate add water 20-30%, the adjustment pulp density is 65%-70%.
It is used as preferred, step 2）Described in the roasting of one-level roaster weak oxygen atmosphere, control 580 ~ 630 DEG C of temperature.
It is used as preferred, step 6）Described in by collected dust enter secondary oxidation stove oxygen-enriched air roasting, control temperature
Degree is at 640 ~ 660 DEG C, and roasting time is more than 0.5 hour.
A kind of improved method for improving fired slags gold recovery of the present invention, compared with prior art with prominent
The mine dust of collection is delivered in secondary oxidation stove by substantive distinguishing features and marked improvement, this method by wind model equipment
Row after baking, the golden rate of recovery after roasting can reach expection, effective to improve recycled in its entirety rate.Technique simple possible,
Easily operated, mineral resources strong adaptability reduces the unnecessary wasting of resources.
Embodiment
Embodiment 1
1）The gold concentrate chosen first is added into surge tank the ore pulp that concentration is 65% is made；
2）Ore pulp is sprayed into one-level reduction roaster with peristaltic pump, is calcined under the conditions of weak oxygen, it is 630 DEG C to control temperature, discharge
Flue gas carry a large amount of fired slags and mine dust, into the first cyclone dust collectors dedusting, the flue gas after dedusting enters back into first
Burner-gas cooler cools；
3）Step 2）The mine dust that the calcining and the first cyclone dust collectors of reduction roasting discharge are collected is calcined into secondary oxidation stove,
It is 650 DEG C to control temperature, roasting time 0.8 hour, and the ash-laden gas of discharge enters the cooling of the second burner-gas cooler and gathered dust；
4）By step 3）The calcining that middle process secondary oxidation stove roasting is produced is delivered to acidleach workshop section by embedded scraper transporter,
Most afterwards through cyaniding, Refining output finished product gold, step 2）In the first burner-gas cooler and step 3）Second burner-gas cooler is arranged
The flue gas gone out gathers dust after collecting into electric cleaner；
5）Step 4）The flue gas of middle electric cleaner discharge is changed into by the gaseous state arsenic in being quenched in tower cooler quick refrigeration, flue gas
Solid-state arsenic, receives arsenic device through cloth bag and reclaims arsenic trioxide, the flue gas of removing arsenic trioxide enters acid making system；
6）Step 2) in the first burner-gas cooler, step 3）The second burner-gas cooler and step 4）The mine dust that electric cleaner is reclaimed
It is delivered to by wind model equipment in secondary oxidation stove and carries out after baking, the calcining and ash-laden gas produced after roasting is again
Into step 4）.
The results showed, gold recovery is not carried out in the mine dust of after baking between 50%---60%, and pass through secondary
The mine dust of roasting is calcined more than ＞ 0.5h under 650 DEG C of environment, and the golden rate of recovery can improve more than 15%.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements done etc. should be included in the scope of the protection.
Claims (4)
1. a kind of improved method for improving fired slags gold recovery, is comprised the following steps that：
1）Gold concentrate is chosen, organizes with slurry with adjusting pulp density；
2）By step 1）Flowsheet of slurry agitation uniformly spray into one-level reduction furnace afterwards and carry out reduction roasting, the baking flue gas of output enters the
One cyclone dust collectors dedusting, the flue gas discharged after dedusting enters the second cyclone dust collectors dedusting, enters back into the first burner-gas cooler
Cooled；
3）Step 2）The mine dust that the calcining and the first cyclone dust collectors of reduction roasting discharge are collected is calcined into secondary oxidation stove, row
The ash-laden gas gone out enters the cooling of the second burner-gas cooler and gathered dust；
4）By step 3）The calcining that middle process secondary oxidation stove roasting is produced is delivered to acidleach workshop section by embedded scraper transporter, most
By cyaniding, Refining output finished product gold, step 2）In the first burner-gas cooler and step 3）Second burner-gas cooler is discharged
Flue gas collect after gathered dust into electric cleaner；
5）Step 4）The flue gas of middle electric cleaner discharge is changed into solid-state by the gaseous state arsenic being quenched in tower cooler quick refrigeration, flue gas
Arsenic, receives arsenic device through cloth bag and reclaims arsenic trioxide, the flue gas of removing arsenic trioxide enters acid making system；
6）Step 2) in the first burner-gas cooler, step 3）The second burner-gas cooler and step 4）The mine dust that electric cleaner is reclaimed
It is delivered to by wind model equipment in secondary oxidation stove and carries out after baking, the calcining and ash-laden gas produced after roasting is again
Into step 4）.
2. a kind of improved method for improving fired slags gold recovery according to claim 1, it is characterised in that：Step 1）In
Described gold concentrate adds water 20-30%, and the adjustment pulp density is 65%-70%.
3. a kind of improved method for improving fired slags gold recovery according to claim 1, it is characterised in that：Step 2）In
The weak oxygen atmosphere roasting of described one-level roaster, controls 580 ~ 630 DEG C of temperature.
4. a kind of improved method for improving fired slags gold recovery according to claim 1, it is characterised in that：Step 6）In
Described enters collected dust secondary oxidation stove oxygen-enriched air roasting, and control temperature is at 640 ~ 660 DEG C, and roasting time is more than
0.5 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710434207.3A CN107267773A (en) | 2017-06-09 | 2017-06-09 | A kind of improved method for improving fired slags gold recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710434207.3A CN107267773A (en) | 2017-06-09 | 2017-06-09 | A kind of improved method for improving fired slags gold recovery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107267773A true CN107267773A (en) | 2017-10-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710434207.3A Pending CN107267773A (en) | 2017-06-09 | 2017-06-09 | A kind of improved method for improving fired slags gold recovery |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986851A (en) * | 2006-12-06 | 2007-06-27 | 山东国大黄金股份有限公司 | Two-section roasting production process for recovering Au, Cu, Ag, As and s from As and C containing aurin ore |
| CN101519731A (en) * | 2009-04-10 | 2009-09-02 | 山东恒邦冶炼股份有限公司 | Method for extracting high arsenic complicated golden ore concentrate multielement |
| CN102021316A (en) * | 2011-01-05 | 2011-04-20 | 铜陵有色金属集团控股有限公司铜冠冶化分公司 | Two-stage roasting smelting process for arsenic-sulfur gold concentrates |
| CN102181629A (en) * | 2011-04-27 | 2011-09-14 | 北京矿冶研究总院 | Roasting treatment method for arsenic-containing gold concentrate |
| CN102560084A (en) * | 2012-01-14 | 2012-07-11 | 长春黄金设计院 | Arsenic removal process containing post-combustion technology |
| CN104498705A (en) * | 2014-12-18 | 2015-04-08 | 北京矿冶研究总院 | Pretreatment method of complex refractory gold ore |
-
2017
- 2017-06-09 CN CN201710434207.3A patent/CN107267773A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986851A (en) * | 2006-12-06 | 2007-06-27 | 山东国大黄金股份有限公司 | Two-section roasting production process for recovering Au, Cu, Ag, As and s from As and C containing aurin ore |
| CN101519731A (en) * | 2009-04-10 | 2009-09-02 | 山东恒邦冶炼股份有限公司 | Method for extracting high arsenic complicated golden ore concentrate multielement |
| CN102021316A (en) * | 2011-01-05 | 2011-04-20 | 铜陵有色金属集团控股有限公司铜冠冶化分公司 | Two-stage roasting smelting process for arsenic-sulfur gold concentrates |
| CN102181629A (en) * | 2011-04-27 | 2011-09-14 | 北京矿冶研究总院 | Roasting treatment method for arsenic-containing gold concentrate |
| CN102560084A (en) * | 2012-01-14 | 2012-07-11 | 长春黄金设计院 | Arsenic removal process containing post-combustion technology |
| CN104498705A (en) * | 2014-12-18 | 2015-04-08 | 北京矿冶研究总院 | Pretreatment method of complex refractory gold ore |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 265100 Yantai City, Shandong Province, Haiyang city xujiazhen Yan Wing mountain village north Applicant after: Yantai kingau Environmental Technology Co. Ltd. Address before: 265141 Yantai City, Shandong Province, Haiyang city xujiazhen Yan Wing mountain village north Applicant before: Yantai jinau smelting Co Ltd |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171020 |