CN86105982A - Cryogenic vulcanization roasting-beneficiating method reclaims copper, gold and silver - Google Patents
Cryogenic vulcanization roasting-beneficiating method reclaims copper, gold and silver Download PDFInfo
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- CN86105982A CN86105982A CN86105982.4A CN86105982A CN86105982A CN 86105982 A CN86105982 A CN 86105982A CN 86105982 A CN86105982 A CN 86105982A CN 86105982 A CN86105982 A CN 86105982A
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- flotation
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Abstract
Copper is reclaimed in cryogenic vulcanization roasting-beneficiating method, gold and silver are to adopt cryogenic vulcanization roasting-joint flotation technology at the associativity copper oxide ore of low-grade refractory choosing and association precious metal thereof, makes the copper after the artificial sulfuration and the precious metal of association thereof deviate to obtain good flotation effect from the raw ore matrix.The direct ore dressing of comparing or directly wet method soak and moltenly have that cost is low, technical process is simple, facility investment is low, less energy consumption, easily realize and advantage such as pollution-free.
Description
Cryogenic vulcanization roasting-beneficiating method reclaims copper, gold and silver are to extract a kind of respond well method in the metallurgy.
Nearly two have many people that complicated and copper oxide ore difficult choosing was done much to study both at home and abroad and the experiment of various scales during the last ten years, fail to determine a kind of preferred plan that is suitable for handling this kind ore body so far.The objective of the invention is to use low temperature (about 250 ℃) this ore of sulfidizing at short notice, obtain sulphide ores direct flotation then, abandon a large amount of useless rocks in concentrate with conventional dose enriching Cu, gold and silver.
The key problem in technology of this law is the processing condition of control cryogenic vulcanization roasting, makes the sulfuration of copper and oxide compound thereof, preferentially generates sulfide and breaks away from product separately with its matrix
, again that this flotation performance is much better than copper oxide ore artificial sulphide ores carries out flotation, and that copper, gold and silver are enriched in the concentrate is existing as follows with the processing condition division of cryogenic vulcanization roasting and flotation two processes.
One, cryogenic vulcanization roasting
1. processing condition
Maturing temperature: 250 ℃
Roasting time: 30～40 minutes
Ore grain size: be milled to less than 200 orders and account for 93%
Additive: add SULPHUR POWDER 0.5%(ore: sulphur=100: 0.5)
2. roasting apparatus
Can be with the stove-shaped structure of being recommended as specification sheets figure.Figure is a horizontal sealing cryogenic vulcanization rotary kiln synoptic diagram, mainly partly forms by three.Sealing blending bun 1, seal gate valve 2, feeding warehouse 7 are formed the feed bin system, and the mineral aggregate through mixing is just from importing in the roasting kiln here.The kiln system is made of thermal insulation layer 3, nichrome wire 4, tubular kiln body 5, water cooled seal circle 6 and support roller 10, and mineral aggregate enters the seal silo system after this carries out the cryogenic vulcanization roasting, and it is made up of seal silo 8, seal gate valve 9, and the mineral aggregate that roasting is good is discharged thus.
Two, flotation.Closed circuit flow process of flotation and regime of agent are shown in Figure of description 2.
Send into flotation from the artificial sulphide ores of stoving oven output.Flotation flowsheet is an one roughing, secondary is roughly selected and scan selected respectively once, chats returns one roughing respectively, secondary is roughly selected.
Adopt this law to handle tangdan copper mine, it is as follows to have obtained the existing division of good techno-economic.
1. raw ore valuable metal grade: copper 0.62%, silver 5 gram/tons, golden 0.059%/ton.
2. cryogenic vulcanization roasting condition: 250 ℃ of temperature; Roasting time 30 minutes; Raw ore dry grinding is to 93% by 200 orders; Sulphur add-on 0.5%.
3. flotation flowsheet and regime of agent are as shown in table 1.
4. the technico-economical comparison of obtaining
Copper ore concentrates grade: copper 10.2%, silver 78.3 gram/tons, gold 1.35 gram/tons
The rate of recovery: copper 83%, silver 72.3%, gold 91.6%
Concentrate yield: 4～5%
Compare with high pressure ammonia process, segregation process, the pyrometallurgical smelting of present employing and to have following advantage:
1. roasting apparatus is simple under atmospheric low-temperature, investment is low, be easy to realization, easy handling, do not need special reagent and refractory materials;
2. roasting energy consumption is low, only is 9.1 kilograms of/ton ore deposits of mark coal as adopting dry method grinding theory consumption of coal (not counting heat utilization efficiency);
Head grade low and in the concentrate copper, the gold and silver rate of recovery and grade all reach more excellent effect;
4. full technical process is the output small amounts of sulfur dioxide only, and the sulphur in a part of concentrate can bessemerized middle recovery, and the sulfurous gas of roasting output is also recyclable, therefore accomplishes pollution-free substantially.
Claims (2)
1, a kind of non-ferrous metal extracting method, copper oxide ore is through broken ore grinding, batching, smelting or hydrometallurgical process obtain concentrate or crude metal, it is characterized in that said smelting process is a kind of cryogenic vulcanization roasting and flotation combined flow process, this flow process is that the copper oxide ore process is levigate to the granularity that accounts for less than 200 purposes more than 93%, the SULPHUR POWDER of adding 0.5% mixes and places roasting under 250 ℃ of low temperature in the stoving oven then, roasting time 30～40 minutes, at this moment the gold of cupric oxide and association thereof and silver are converted into sulfide and break away from the raw ore matrix, obtain artificial copper-sulphide ores and send into flotation again, flotation is adopted one section and is roughly selected, roughly select for two sections, scan once selected respectively, chats returns one, two sections flow processs of roughly selecting, the output concentrate, mine tailing is abandoned it.
2, metallurgical method as claimed in claim 1 is characterized in that handled copper oxide ore is a kind of low-grade refractory ore, and the grade of copper is below 1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86105982 CN1014802B (en) | 1986-09-03 | 1986-09-03 | Recovery of copper, gold and silver by vulcanizing roasting at law temp.-ore dressing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86105982 CN1014802B (en) | 1986-09-03 | 1986-09-03 | Recovery of copper, gold and silver by vulcanizing roasting at law temp.-ore dressing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86105982A true CN86105982A (en) | 1988-04-20 |
| CN1014802B CN1014802B (en) | 1991-11-20 |
Family
ID=4803043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86105982 Expired CN1014802B (en) | 1986-09-03 | 1986-09-03 | Recovery of copper, gold and silver by vulcanizing roasting at law temp.-ore dressing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1014802B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5700369A (en) * | 1997-01-14 | 1997-12-23 | Guangzhou Institute Of Geochemistry Chinese Academy Of Sciences | Process for adsorboaggregational flotation of Carlin type natural gold ore dressing |
| CN101829633A (en) * | 2010-04-01 | 2010-09-15 | 江西理工大学 | Process for directly reclaiming gold and silver by floatation from acid leaching ore pulp in wet smelting at high temperature |
| CN102133556A (en) * | 2010-12-09 | 2011-07-27 | 古晓跃 | Method for reclaiming gold and silver by ultrasonic treatment and flotation of gold and silver containing tailings |
| CN103480496A (en) * | 2013-09-29 | 2014-01-01 | 中南大学 | Sulfuration roasting flotation process for low-grade antimony oxide ore |
| CN106238197A (en) * | 2016-08-11 | 2016-12-21 | 李国民 | Copper concentrate produces the roasting beneficiation method of " copper matte regulus " |
| CN106391323A (en) * | 2016-09-23 | 2017-02-15 | 中南大学 | Application of 1,2,4,5-tetrazole-3-thioketone flotation collecting agent |
| CN114737047A (en) * | 2021-04-01 | 2022-07-12 | 北京千冶科技有限公司 | Process for treatment of ores and materials for refining metals |
-
1986
- 1986-09-03 CN CN 86105982 patent/CN1014802B/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5700369A (en) * | 1997-01-14 | 1997-12-23 | Guangzhou Institute Of Geochemistry Chinese Academy Of Sciences | Process for adsorboaggregational flotation of Carlin type natural gold ore dressing |
| CN101829633A (en) * | 2010-04-01 | 2010-09-15 | 江西理工大学 | Process for directly reclaiming gold and silver by floatation from acid leaching ore pulp in wet smelting at high temperature |
| CN101829633B (en) * | 2010-04-01 | 2013-03-06 | 江西理工大学 | Process for directly reclaiming gold and silver by floatation from acid leaching ore pulp in wet smelting at high temperature |
| CN102133556A (en) * | 2010-12-09 | 2011-07-27 | 古晓跃 | Method for reclaiming gold and silver by ultrasonic treatment and flotation of gold and silver containing tailings |
| CN103480496A (en) * | 2013-09-29 | 2014-01-01 | 中南大学 | Sulfuration roasting flotation process for low-grade antimony oxide ore |
| CN106238197A (en) * | 2016-08-11 | 2016-12-21 | 李国民 | Copper concentrate produces the roasting beneficiation method of " copper matte regulus " |
| CN106238197B (en) * | 2016-08-11 | 2018-08-31 | 李国民 | Copper concentrate produces the roasting-beneficiation method of " copper matte regulus " |
| CN106391323A (en) * | 2016-09-23 | 2017-02-15 | 中南大学 | Application of 1,2,4,5-tetrazole-3-thioketone flotation collecting agent |
| CN114737047A (en) * | 2021-04-01 | 2022-07-12 | 北京千冶科技有限公司 | Process for treatment of ores and materials for refining metals |
| CN114737047B (en) * | 2021-04-01 | 2024-03-19 | 北京千冶科技有限公司 | Method for processing ore and material for refining metal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1014802B (en) | 1991-11-20 |
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Correction item: Co-applicant Correct: Institute of precious metals; Dongchuan Mining Bureau Research Institute False: Dongchuan Mining Bureau Research Institute Number: 16 Page: 31 Volume: 4 |
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Free format text: CORRECT FROM: DONGCHUAN BUREAU OF MINES RESEARCH INSTITUTE TO: PRECIOUS METALS INSTITUTE RESEARCH INSTITUTES DONGCHUAN MINING BUREAU |
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| C14 | Grant of patent or utility model | ||
| C19 | Lapse of patent right due to non-payment of the annual fee |