CN1042947A - From low-grade gold, reclaim the processing method of gold - Google Patents
From low-grade gold, reclaim the processing method of gold Download PDFInfo
- Publication number
- CN1042947A CN1042947A CN88108304A CN88108304A CN1042947A CN 1042947 A CN1042947 A CN 1042947A CN 88108304 A CN88108304 A CN 88108304A CN 88108304 A CN88108304 A CN 88108304A CN 1042947 A CN1042947 A CN 1042947A
- Authority
- CN
- China
- Prior art keywords
- millimeters
- millimeter
- ore
- gold
- grade
- 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.)
- Granted
Links
Images
Classifications
-
- 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention is a kind of processing method that reclaims gold from low grade ore, it will break to the ore sizing of-15 millimeters or-12 millimeters or-10 millimeters be two kinds of grades, more coarsely graded ore on the sieve is handled with the dump leaching method, handled with all-mud cyanidation method sieving down more fine-graded ore.The present invention separates low-grade ore particle and higher-grade ore particle by sieving technology, handle with cheap dump leaching method measuring big low-grade ore particle, can reduce expense, handle with all-mud cyanidation method measuring little higher-grade ore particle, can improve the rate of recovery of gold, handle the breccia type gold mine with the present invention, its golden rate of recovery has compared with the raising of single dump leaching method about 16%.
Description
The invention belongs to field of metallurgy, be a kind of from low-grade or reclaim the processing method of gold in the grade ore.
Low grade gold ore contains gold 2～3 gram/tons usually, and what have may be lower, as 0.8 gram/ton～2 gram/tons.The method that reclaims gold from this ore has: dump leaching method, granulating and heap-leaching method, all-mud cyanidation method and flotation process.Except that indivedual mines, adopt first three methods more.
The dump leaching method is gold containing ore to be crushed to-30 ,-15 ,-12 millimeters, carries out fragmentation as adopting one section, two sections or three sections open circuits, closed circuit crushing technologies.On the heap pad that builds up by cement, pitch, plastics film or clay, build heap then, with the cyanide solution spray of alkalescence.Under cycle, gold is generated golden sodium cyanide by the sodium cyanide dissolving at certain spraying intensity and spray, and reaction formula is:
Then use activated carbon adsorption, alkaline cyanide desorb, electrolytic recovery gold.Or from your liquid, reclaim gold with zinc replacement.It is low that the dump leaching method reclaims golden cost from low grade gold ore, and the investment capital cost is lower.Even if carry out dump leaching but ore is broken to-12 millimeters～0 millimeter, because dump leaching ore grain size thickness scope is wide, therefore channeling, dead zone phenomenon and little pond phenomenon often appear when dump leaching, add in the dump leaching because perviousness is not good enough, the utilization ratio of oxygen is relatively poor, so the leaching yield of gold is lower.The rate of recovery is generally 60～70%, and indivedual ores only are 50%, if ore is further broken thin, as breaking to-2 millimeters, then the contained thin mud of ore is more, makes the perviousness of ore deposit heap poorer, and leaching can't be carried out.
For addressing the above problem and develop briquetting dump leaching method.The ore that is about to be milled to-12 to-15 millimeters is sneaked into some amount lime, Bo Telan cement, water or cyanating solution; Granulate on garden cartridge type, garden dish-type or belt-type nodulizer, make smitham stick to the coarse grain mineral surface, thereby reduce the fine particle content in the heap of ore deposit, make the ore particle even thickness, above-mentioned three kinds of phenomenons obviously reduce, and the leaching yield of gold improves.But owing to rockiness, persistence, the perviousness of ore particle group is difficult to control, in the time of many, the grain of having made is rolled into a ball and is pulverized again on the heap up to 3-6 rice, occurs above-mentioned three kinds of phenomenons again, influences the raising of the rate of recovery.And the ore per ton of granulating will increase extra charge and optional equipment.The ton dump leaching is granulated also very complicated.
All-mud cyanidation method is ore to be milled to-0.074 millimeter, leaches with alkaline cyanide in the agitation leach altar of inflation, is generally 24 hours, and concentration of cyanide is in 0.05～0.1% scope during leaching, and pH value is 11～12.Leaching can be carried out at one section, leaches with carbon absorption and can carry out synchronously at two sections usually; Also can carry out carbon absorption again after prussiate leaches, promptly so-called carbon slurry method and carbon soak method.Also can adopt zinc replacement.Jin the rate of recovery is higher in this way, is generally 90～95%, and this is that the quantity that gold is exposed to the ore particle surface increases, and helps and the prussiate direct reaction owing to the very thin Gold Ore of granularity.High-grade Gold Ore during this method is applicable to, the ore that grade is low, as 1.5g/T～2g/T, it is uneconomic that the expense ore that it is a large amount of is milled to-0.074 millimeter, so for low-grade gold, the single processing in this way is unfavorable.
The objective of the invention is provides a kind of dump leaching and all-mud cyanidation method bonded processing method to reclaim gold from low grade gold ore in order to overcome dump leaching in the prior art, granulating and heap-leaching and all-mud cyanidation method reclaim gold from low grade gold ore shortcoming.
Technological process of the present invention is as follows, with crushing process with crushing raw ore to-15 millimeters or-12 millimeters or-10 millimeters, the broken concrete size of granularity depends on the easily broken property of wanting milling of ores, it is characterized in that setting up a sieving technology, with the ore sizing of-15 millimeters of output or-12 millimeters or-10 millimeters be-15+6 millimeter and-6 millimeters or-the 15+5 millimeter and-5 or-15+4 millimeter and-4 millimeters, or-12+6 millimeter and-6 millimeters or-12+5 millimeter and-5 millimeters or-12+4 millimeter and-4 millimeters, or-10+6 millimeter and-6 millimeters or-10+5 millimeter and-5 millimeters or-10+4 millimeter and-4 millimeters two kinds of grades, right-15+6 millimeter or-the 15+5 millimeter or-the 15+4 millimeter, or-the 12+6 millimeter or-the 12+5 millimeter or-the 12+4 millimeter or-the 10+6 millimeter or-the 10+5 millimeter or-ore of 10+4 millimeter grade handles with the dump leaching method, the ore productive rate of this part grade accounts for 50～70%, the grade of gold is lower or consistent with head grade, because this part ore grain size thickness narrow range, epigranular, average particle size is with the thickest, fine particle difference is little, be very suitable for dump leaching, so ditch liquid when leaching, dead zone and little pond phenomenon reduce, perviousness and coefficient of oxygen utilization obviously improve, gold leaching rate improves, the ore of right-6 millimeters or-5 millimeters or-4 millimeters grades is handled with all-mud cyanidation method, the ore productive rate of this part grade is about 30～50%, the grade of gold is higher, with broken-6 millimeters, the ore of-5 millimeters or-4 millimeters is regrinded to-0.074 millimeter, and its ore grinding expense obviously descends.
The present invention can handle many Gold Ores well, as contain golden breccia type gold mine, such ore native state is contained in the crack of pyrite and other sulphide oress, tangible segregation phenomena is arranged in shattering process, produced the rich or poor poor of coarse grain and particulate, be that the coarse grain ore grade is low, smitham is of high grade, such ore is very suitable for handling with the present invention, because can be separately with rich or poor ore particle by sieving technology of the present invention, handle with cheap dump leaching method measuring big lean ore grain, can reduce expense, because this trommel has gone thin mud part, dump leaching can be carried out smoothly simultaneously, improved leaching yield, fully grind measuring little rich ore grain, handle, improved the golden rate of recovery with all-mud cyanidation method, owing to the bigger lean ore grain of those amounts is not ground, the ore grinding expense is obviously descended again.
In sum, superiority of the present invention has been to draw the cheap and high advantage of all-mud cyanidation method gold recovery of dump leaching method, overcome the low and high shortcoming of all-mud cyanidation method ore grinding expense of the dump leaching method rate of recovery simultaneously, thereby improved the rate of recovery of gold with alap expense.
Describe in detail according to embodiment below.
Accompanying drawing, process flow sheet of the present invention.
With a breccia type gold containing ore is that example adopts three sections fragmentations, three sections sieving technologies carry out fragmentation and screening to raw ore, referring to accompanying drawing, earlier raw ore is carried out single stage crushing, cross 15 mm sieve,-15 millimeters the ore that produces is crossed 5 millimeters sieve, sieve out-ore of 15+5 millimeter and-5 millimeters two kinds of grades, the ore of single stage crushing output+15 millimeter carries out two-stage crushing, sieve after 15 millimeters, produce with-15 millimeters ores and cross 5 millimeters sieve, sieve out-ore of 15+5 millimeter and-5 millimeters two kinds of grades, and two kinds of grade ore branch grades that produced with single stage crushing merge, to two-stage crushing produce+15 millimeters ores carry out three sections fragmentations and sub-sieve, same generation-15+5 millimeter and-5 millimeters two kinds of grade ores, and with one section, two kinds of grade ores that the two-stage crushing sub-sieve produces divide grade to merge, to three sections broken institute outputs+15 millimeters ore turns back in the two-stage crushing program and circulates, draw at last-ore particle of 15+5 millimeter and-5 millimeters two kinds of grades.
Below that screen analysis the results list of the productive rate of each grade of this example and gold grade is as follows:
Grade (mm) productive rate (%) grade (g/T) Metal Distribution rate (%)
-15,+10 29.53 0.70 9.3
-1,0+8 15.05 0.80 5.7
-8+5 26.02 1.50 17.3
-5+2 13.47 3.90 23.5
-2+0.6 4.87 5.30 11.5
-0.6+0.0074 5.56 5.60 13.7
-0.074 4.90 8.80 19.
Add up to 100.00 2.26 100.00
Calculate-15+5 millimeter productive rate is 71.2%, and 32.2% ,-5 millimeters productive rates of grade 1.01g/T Metal Distribution rate are 28.8%, and grade 5.29g/T Metal Distribution rate is 67.7%, finds out that from The above results segregation phenomena is clearly.
The low grade ore of 1.01g/T is handled with the dump leaching method, and leaching yield is 62%.It is 96% that the high grade ore of 5.29g/T is handled leaching yield with all-mud cyanidation method.Total yield is 82.3%.
With single dump leaching method, its golden rate of recovery is 66%, and uses processing method of the present invention concerning the ore of 2.26g/T, and gold recovery brings up to 82.3%, improves the rate of recovery about 16.3%.
Another native state dust type ore, head grade is 1.55 gram/tons, be broken to-12 millimeters, through screen analysis ,-12+6 millimeter productive rate accounts for 70%, grade 1.01 gram/tons,-6 millimeters productive rates 30%, grade 2.81 gram/tons, segregation phenomena is also fairly obvious, is suitable for handling with processing method of the present invention.
Claims (1)
1, reclaim the processing method of gold from low grade gold ore, elder generation, is characterized in that extremely-15 millimeters or-12 millimeters or-10 millimeters of crushing raw ores with crushing process:
A, set up a sieving technology, with the ore sizing of-15 millimeters of output or-12 millimeters or-10 millimeters be-15+6 millimeter and-16 millimeters or-15+5 millimeter and-5 millimeters or-15+4 millimeter and-4 millimeters, or-12+6 millimeter and-6 millimeters or-12+5 millimeter and-5 millimeters or-12+4 millimeter and-4 millimeters or-10+6 millimeter and-6 millimeters or-10+5 millimeter and-5 millimeters or-10+4 millimeter and-4 millimeters two kinds of grades;
B, to sieve out-the 15+6 millimeter or-the 15+5 millimeter or-the 15+4 millimeter or-the 12+6 millimeter or-the 12+5 millimeter or-the 12+4 millimeter or-the 10+6 millimeter or-the 10+5 millimeter or-ore of 10+4 millimeter grade handles with the dump leaching method;
C, the ore of-6 millimeters or-5 millimeters or-4 millimeters grades of sieving out is handled with all-mud cyanidation method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88108304A CN1021059C (en) | 1988-12-01 | 1988-12-01 | Treatment method for lower grade goldmine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88108304A CN1021059C (en) | 1988-12-01 | 1988-12-01 | Treatment method for lower grade goldmine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1042947A true CN1042947A (en) | 1990-06-13 |
| CN1021059C CN1021059C (en) | 1993-06-02 |
Family
ID=4835022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88108304A Expired - Fee Related CN1021059C (en) | 1988-12-01 | 1988-12-01 | Treatment method for lower grade goldmine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1021059C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051806C (en) * | 1996-04-17 | 2000-04-26 | 王明玉 | Selectively smelting tech. and appts. for fine particle of primary gold ore via contaminating |
| CN101831558A (en) * | 2010-05-25 | 2010-09-15 | 潞西市海华开发有限公司 | Osmotic treatment and stacking method of oxidized clay type gold ores |
| CN101884950A (en) * | 2009-05-12 | 2010-11-17 | 沈阳铝镁设计研究院 | Limestone crushing process |
| CN103464275A (en) * | 2013-09-12 | 2013-12-25 | 阿勒泰正元国际矿业有限公司 | Beneficiation method and device for quartz vein type gold deposit |
| CN103785526A (en) * | 2014-01-23 | 2014-05-14 | 桂林市临桂佳业机械厂 | Beneficiation method of gold ore |
| CN104498730A (en) * | 2014-12-03 | 2015-04-08 | 云南黄金矿业集团股份有限公司 | Method for processing low-grade gold ore |
| CN104946902A (en) * | 2015-06-25 | 2015-09-30 | 长春黄金研究院 | Method for balancing cyanide in all-sliming cyanided carbon slurry gold extraction process |
| CN105214831A (en) * | 2015-11-12 | 2016-01-06 | 福州大学 | A kind of low grade gold ore dump leaching process pulverized based on high pressure roller |
| CN105755295A (en) * | 2016-03-07 | 2016-07-13 | 紫金矿业集团股份有限公司 | Method for recovery of copper from low-grade secondary copper sulfide ore |
-
1988
- 1988-12-01 CN CN88108304A patent/CN1021059C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051806C (en) * | 1996-04-17 | 2000-04-26 | 王明玉 | Selectively smelting tech. and appts. for fine particle of primary gold ore via contaminating |
| CN101884950A (en) * | 2009-05-12 | 2010-11-17 | 沈阳铝镁设计研究院 | Limestone crushing process |
| CN101831558A (en) * | 2010-05-25 | 2010-09-15 | 潞西市海华开发有限公司 | Osmotic treatment and stacking method of oxidized clay type gold ores |
| CN103464275A (en) * | 2013-09-12 | 2013-12-25 | 阿勒泰正元国际矿业有限公司 | Beneficiation method and device for quartz vein type gold deposit |
| CN103464275B (en) * | 2013-09-12 | 2015-05-20 | 阿勒泰正元国际矿业有限公司 | Beneficiation method and device for quartz vein type gold deposit |
| CN103785526A (en) * | 2014-01-23 | 2014-05-14 | 桂林市临桂佳业机械厂 | Beneficiation method of gold ore |
| CN104498730A (en) * | 2014-12-03 | 2015-04-08 | 云南黄金矿业集团股份有限公司 | Method for processing low-grade gold ore |
| CN104946902A (en) * | 2015-06-25 | 2015-09-30 | 长春黄金研究院 | Method for balancing cyanide in all-sliming cyanided carbon slurry gold extraction process |
| CN105214831A (en) * | 2015-11-12 | 2016-01-06 | 福州大学 | A kind of low grade gold ore dump leaching process pulverized based on high pressure roller |
| CN105755295A (en) * | 2016-03-07 | 2016-07-13 | 紫金矿业集团股份有限公司 | Method for recovery of copper from low-grade secondary copper sulfide ore |
| CN105755295B (en) * | 2016-03-07 | 2017-10-17 | 紫金矿业集团股份有限公司 | The method that copper is reclaimed from low-grade secondary copper sulfide mineral |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1021059C (en) | 1993-06-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1021059C (en) | Treatment method for lower grade goldmine | |
| US4362558A (en) | Process of upgrading nickeliferous oxide ores of lateritic origin | |
| CN101857917B (en) | Method of classified leaching of oxidized ore with abundant mud | |
| CN109225612A (en) | A kind of novel environment friendly gold mine ore-dressing technique | |
| CA1218961A (en) | Mineral separation | |
| CN107815552B (en) | Method for recovering gold from gold-containing washing mud of gold ore cyanidation system | |
| AU616723B2 (en) | Pretreatment/agglomeration as a vehicle for refractory ore treatment | |
| CN1187124C (en) | Ore separating method for low-grade oxide gold ore | |
| CN1765519A (en) | Deslim-floatation celestite inished ore process | |
| CN104232908B (en) | Method for recovering gold from gold-containing mercury smelting tailings | |
| CN104745833B (en) | A kind of handling process for high golden paint ore | |
| CN108514950A (en) | A method of improving copper-sulphide ores copper recovery | |
| CN109158216B (en) | High-efficiency flotation process for high-arsenic high-carbon refractory gold ore | |
| von Michaelis | Real and potential metallurgical benefits of HPGR in hard rock ore processing | |
| CN111495582B (en) | Method for preparing dense medium powder by using lead-zinc smelting water-quenched slag | |
| CN110898961A (en) | Self-circulation grinding and beneficiation method for fine screen | |
| CN105803185B (en) | A kind of beneficiation method of aufe oxide ore packet classification synthetical recovery | |
| CN115069424B (en) | Alkali-acid exchange flotation gold extraction process for carbonate type gold ore | |
| CN109971944A (en) | From the method for low-grade secondary copper sulfide mineral high efficiente callback copper | |
| CN219079611U (en) | Recovery system of copper in copper-containing gold concentrate | |
| CN1220784C (en) | Ore dressing process of clay type gold ore leaching method | |
| CN220386809U (en) | Efficient gold ore sorting production system | |
| CN217796651U (en) | System for efficiently recycling valuable components in copper-and sulfur-containing complex oxidized gold and silver ores | |
| CN217313866U (en) | System for efficiently recycling gold from heap leaching tailings | |
| CN113680534B (en) | Fine iron mineral collector and method for asynchronous flotation of coarse and fine iron ore containing carbonate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |