CN1400320A - Method for raising recovery rate of silver from ore containing sulfur, copper, lead, gold and silver - Google Patents
Method for raising recovery rate of silver from ore containing sulfur, copper, lead, gold and silver Download PDFInfo
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- CN1400320A CN1400320A CN 01123562 CN01123562A CN1400320A CN 1400320 A CN1400320 A CN 1400320A CN 01123562 CN01123562 CN 01123562 CN 01123562 A CN01123562 A CN 01123562A CN 1400320 A CN1400320 A CN 1400320A
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- silver
- gold
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- lead
- containing sulfur
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Abstract
The present invention relates to a method for raising silver recovery from silver ore containing sulfur, copper, lead ang gold. On the dbasis of technological process using existent "oxidation roasting-acid impregnation-cyanidation" method to treat the silver ore containing sulfur, copper, lead and gold said invention adopts the technical improvement measure of reducing oxidation roasting temp. and adding sodium sulfate as roasting additive to raise silver recovery by above 40%.
Description
The precious metal smelting industry is when being difficult to leach wherein gold element with direct cyanide process to the mineral that contain sulphur copper-lead gold and silver, general " oxidizing roasting-acidleach-cyaniding " method that adopts is handled such mineral.This technology is to carry out oxidizing roasting at 630 ℃ after such mineral are crushed to certain fineness, roasting material size mixing to liquid-solid ratio be 2, temperature is 80～90 ℃, transfers with the vitriol oil under the condition of PH=1～1.5 and reacts 1～2 hour, so that the copper in the ore deposit leaches.Soak slag behind the copper size mixing to liquid-solid ratio be 3, transfer PH=10 with yellow soda ash, add sodium cyanide and leach wherein gold and silver in room temperature.This method directly advantage of cyanide process is: the gold in the sample ore can obtain the satisfied rate of recovery; Cost is low; Copper in the sample ore is reclaimed; The mineral that sulfur-bearing is high can be reclaimed element sulphur in the vitriolic mode.But this method existing questions is that silver raising recovery rate is low, generally can only reclaim its about 30%.
Application for a patent for invention specification sheets CN1232879A propose to add sodium-chlor as roasting additive to improve the rate of recovery of silver.But sodium-chlor is during as roasting additive and since stronger coordination ability of chlorion and muriate thereof when high temperature volatile characteristic and having many insoluble problems aspect the equipment anticorrosion and the golden rate of recovery.Therefore, this method fails to be applied to produce so far.Application for a patent for invention prospectus CN1283707A claims: can improve the rate of recovery of silver more than 30% with SD solution as roasting additive.But this method does not see that so far it is used for production process.
The present invention handles on the technical process basis of ore containing sulfur, copper, lead, gold and silver thing in former " oxidizing roasting-acidleach-cyaniding " method that do not change, by reducing maturing temperature and adding the technical improvement method of sodium sulfate, can make the rate of recovery silver-colored in the mineral of sulfur-bearing copper-lead gold and silver improve more than 40% as roasting additive.
Application example
Embodiment 1:
Select somewhere, Shanxi gold ore for use.Its chemical ingredients is: Au:67.33g/t; Ag:307.93g/t; Cu:2.13%; Pb:2.06%; S:29.45%; Fineness :-200 orders account for 60%.This experimental technique is: oxidizing roasting:
To contain 11.4 gram Na
2SO
410H
2The 40 ml water solution of O join in the above-mentioned 100 gram gold ore and stir; The vessel that will fill this soup compound then place retort furnace, give birth to temperature gradually to 530 ℃ from low temperature.For guaranteeing the oxygen supply abundance, fire door is half-open, and stirs frequently.Be about 1.5 hours heat-up time.Acidleach:
Add 200 ml waters in the mineral aggregate that above-mentioned roasting is good, transfer PH=1～1.5 with the vitriol oil, be heated to 80～90 ℃, stirred 1 hour, filter, filtrate recovery is carried copper.Filter residue washes with water to neutrality.Cyaniding:
Will be in the above-mentioned filter residue add 300 ml waters, transfer PH=10 with yellow soda ash after, add the little water solution that contains 1 gram sodium cyanide stirring at room 36 hours.Filter, filter residue carries out the content analysis of corresponding each element of gold, silver and bronze through washing after the oven dry.Analytical results sees Table 1.
Embodiment 2:
Experimental technique is with embodiment 1, and just the oxidizing roasting temperature is 630 ℃.The content of each element of gold, silver and bronze sees Table 1 in the cyaniding slag.
Embodiment 3:
Experimental technique is with embodiment 1, but oxidizing temperature is 630 ℃, does not add sodium sulfate simultaneously.The content of each element of gold, silver and bronze sees Table 1 in the cyaniding slag.
Embodiment 4: experimental technique is with embodiment 1, but do not add sodium sulfate.The content of each element of gold, silver and bronze sees Table 1 in the cyaniding slag.
Table 1. experimental result
| Au (g/t) Ag (g/t) Ag extraction yield (%) Cu (%) | |
| Embodiment 1 | ??1.50???????77.60????????74.80??????????0.19 |
| Embodiment 2 | ??1.48???????110.85???????64.00??????????0.20 |
| Embodiment 3 | ??1.51???????202.46???????34.25??????????0.21 |
| Embodiment 4 | ??1.50???????207.98???????32.46??????????0.21 |
Claims (2)
1. method that from ore containing sulfur, copper, lead, gold and silver, improves silver raising recovery rate.It is characterized in that: handle in existing " oxidizing roasting-acidleach-cyaniding " method on the technical process basis of ore containing sulfur, copper, lead, gold and silver, reduce the oxidizing roasting temperature and add sodium sulfate as roasting additive.
2. according to claim 1, it is characterized in that the oxidizing roasting temperature is below 540 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011235624A CN1169976C (en) | 2001-08-02 | 2001-08-02 | Method for raising recovery rate of silver from ore containing sulfur, copper, lead, gold and silver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011235624A CN1169976C (en) | 2001-08-02 | 2001-08-02 | Method for raising recovery rate of silver from ore containing sulfur, copper, lead, gold and silver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1400320A true CN1400320A (en) | 2003-03-05 |
| CN1169976C CN1169976C (en) | 2004-10-06 |
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ID=4665154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011235624A Expired - Fee Related CN1169976C (en) | 2001-08-02 | 2001-08-02 | Method for raising recovery rate of silver from ore containing sulfur, copper, lead, gold and silver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1169976C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102492854A (en) * | 2011-12-28 | 2012-06-13 | 山东国大黄金股份有限公司 | Method for raising leaching rate of silver cyanide |
| CN103789534A (en) * | 2014-02-18 | 2014-05-14 | 云龙县铂翠贵金属科技有限公司 | Method for enriching noble metals from high-sulfur material |
| CN105272620A (en) * | 2015-10-29 | 2016-01-27 | 内蒙古辽中京农业科技有限责任公司 | High-concentration suspension type liquid compound fertilizer and preparation method thereof |
| CN107034353A (en) * | 2017-04-27 | 2017-08-11 | 中南大学 | A kind of method of low-temperature bake acidleach dissociation gold |
| CN107904396A (en) * | 2017-11-30 | 2018-04-13 | 长春黄金研究院 | A kind of method for improving prousite and leaching the rate of recovery |
-
2001
- 2001-08-02 CN CNB011235624A patent/CN1169976C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102492854A (en) * | 2011-12-28 | 2012-06-13 | 山东国大黄金股份有限公司 | Method for raising leaching rate of silver cyanide |
| CN103789534A (en) * | 2014-02-18 | 2014-05-14 | 云龙县铂翠贵金属科技有限公司 | Method for enriching noble metals from high-sulfur material |
| CN105272620A (en) * | 2015-10-29 | 2016-01-27 | 内蒙古辽中京农业科技有限责任公司 | High-concentration suspension type liquid compound fertilizer and preparation method thereof |
| CN107034353A (en) * | 2017-04-27 | 2017-08-11 | 中南大学 | A kind of method of low-temperature bake acidleach dissociation gold |
| CN107904396A (en) * | 2017-11-30 | 2018-04-13 | 长春黄金研究院 | A kind of method for improving prousite and leaching the rate of recovery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1169976C (en) | 2004-10-06 |
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