CN106316162A - Method for firing active lime by using lead-zinc tailings and recovering precious metals - Google Patents
Method for firing active lime by using lead-zinc tailings and recovering precious metals Download PDFInfo
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- CN106316162A CN106316162A CN201510323594.4A CN201510323594A CN106316162A CN 106316162 A CN106316162 A CN 106316162A CN 201510323594 A CN201510323594 A CN 201510323594A CN 106316162 A CN106316162 A CN 106316162A
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- China
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- tailings
- lead
- active lime
- firing
- zinc tailings
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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
- 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 an active lime production method, particularly to a method for firing active lime by using lead-zinc tailings and recovering precious metals. A purpose of the present invention is to mainly solve the problems of the stacking of a large number of lead-zinc tailings and the pollution of heavy metals contained in the lead-zinc tailings on soil and water sources. According to the present invention, with the application of the lead-zinc tailings to fire the active lime, the tailings stacking is solved, and a certain added value can be produced; the high content precious metals are recovered during the lime firing process, such that the waste of resources is avoided, and the environment is protected; the process of the method for firing the active lime by using the lead-zinc tailings and recovering the precious metals comprises performing active lime firing through a rotation kiln and recovering heavy metals through flue gas; and the method of the present invention has advantages of complete lead-zinc tailings utilization, effective soil source saving, production cost reducing, excellent mechanical property, no pollution during the production process, and meeting of the environmental protection requirements.
Description
Technical field
The present invention relates to the production method of a kind of active lime, especially relate to a kind of utilize Pb-Zn tailings fire active lime and reclaim noble metal method.
Background technology
China's Pb-Zn tailings and smeltery's distribution thereof are very wide, and waste sludge discharge amount is the biggest, need to take a large amount of farmland as stacking place, and harmful leachable therein also can polluted source.Therefore using waste residue as former, the fuel of manufacture of cement, be economize on resources, the Main way of the energy, this direction is recognized by numerous scientific research personnel and cement production enterprise, and actively expands constantly and utilize scope.
The continuous growth needed led-zinc-silver deposit along with social development, Lead and Zinc resource is by constantly exploitation exhaustion day by day.Meanwhile, a large amount of Pb-Zn tailings produce and are stored in Tailings Dam with the form of storing up for a long time, do not only take up tract, also result in the environmental destruction such as soil erosion and water pollution.Mine tailing is as residue mineral resources, and either from the sustainable development of resource, or in terms of environmental conservation, the comprehensive utilization of resource is only the key of solution problem.
Summary of the invention
The purpose of the present invention, solves the heavy metal stacked in a large number and contain of Pb-Zn tailings to soil and the pollution problem of water resource.Utilize Pb-Zn tailings to fire active lime i.e. to solve the stacking of mine tailing and can produce again certain added value；Reclaiming, during lime calcining, the noble metal that content is higher, environment is protected again in the waste i.e. avoiding resource, meets the requirement of national policy.
What the present invention provided utilize Pb-Zn tailings fires active lime and the technique of method reclaiming noble metal thereof are to carry out firing of active lime, simultaneously by off-gas recovery heavy metal by rotary kiln.
Accompanying drawing illustrates:
Fig. 1 is that the present invention utilizes Pb-Zn tailings fire active lime and reclaim the method artwork of noble metal.
Detailed description of the invention:
Embodiment 1: mine tailing puts in rotary kiln by charging aperture, the lead in recovered flue gas and zinc by the way of extraction.
Claims (5)
1. one kind utilizes Pb-Zn tailings to fire active lime and the method reclaiming noble metal thereof, it is characterised in that: utilize Pb-Zn tailings while firing active lime, to carry out the recovery operation of the higher noble metal of content.
2. utilize Pb-Zn tailings to fire active lime and the method reclaiming noble metal thereof according to a kind of described in claim 1, it is characterised in that: it is to direct plunge in rotary kiln by Pb-Zn tailings, utilizes the heat of flue gas to dry, a kind of technique directly burnt till in high-temperature region.
3. utilize Pb-Zn tailings to fire active lime and the method reclaiming noble metal thereof according to a kind of described in claim 1, it is characterised in that: the temperature of rotary kiln high-temperature region is between 900-1200 DEG C.
4. utilize Pb-Zn tailings to fire active lime and the method reclaiming noble metal thereof according to a kind of described in claim 1, it is characterised in that: material is between 5-30min in the time of staying of rotary kiln high-temperature region.
5. utilize Pb-Zn tailings to fire active lime and the method reclaiming noble metal thereof according to a kind of described in claim 1, it is characterised in that: it is to be reclaimed by the noble metal that content in the flue gas to rotary kiln is higher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510323594.4A CN106316162A (en) | 2015-06-15 | 2015-06-15 | Method for firing active lime by using lead-zinc tailings and recovering precious metals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510323594.4A CN106316162A (en) | 2015-06-15 | 2015-06-15 | Method for firing active lime by using lead-zinc tailings and recovering precious metals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106316162A true CN106316162A (en) | 2017-01-11 |
Family
ID=57732362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510323594.4A Pending CN106316162A (en) | 2015-06-15 | 2015-06-15 | Method for firing active lime by using lead-zinc tailings and recovering precious metals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106316162A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1789194A (en) * | 2005-12-14 | 2006-06-21 | 浙江大学 | Method for burning agglomerate material by utilizing copper, lead and zinc tailings in rotary kiln by dry method |
| CN103466968A (en) * | 2013-08-23 | 2013-12-25 | 西安建筑科技大学 | Method for preparing natural hydraulic lime with lead and zinc mine tailings |
| CN104355558A (en) * | 2014-10-28 | 2015-02-18 | 中南大学 | Cement employing lead-zinc tailings as raw material and preparation method of cement |
-
2015
- 2015-06-15 CN CN201510323594.4A patent/CN106316162A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1789194A (en) * | 2005-12-14 | 2006-06-21 | 浙江大学 | Method for burning agglomerate material by utilizing copper, lead and zinc tailings in rotary kiln by dry method |
| CN103466968A (en) * | 2013-08-23 | 2013-12-25 | 西安建筑科技大学 | Method for preparing natural hydraulic lime with lead and zinc mine tailings |
| CN104355558A (en) * | 2014-10-28 | 2015-02-18 | 中南大学 | Cement employing lead-zinc tailings as raw material and preparation method of cement |
Non-Patent Citations (1)
| Title |
|---|
| 沈雪飞等: "利用铅锌尾矿制备天然水硬性石灰可行性研究", 《硅酸盐通报》 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170111 |