CN1037115C - Method for raising cyaniding extraction rate and recovery percent of carbonaceous gold ore by compound inhibitor - Google Patents
Method for raising cyaniding extraction rate and recovery percent of carbonaceous gold ore by compound inhibitor Download PDFInfo
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- CN1037115C CN1037115C CN94111813A CN94111813A CN1037115C CN 1037115 C CN1037115 C CN 1037115C CN 94111813 A CN94111813 A CN 94111813A CN 94111813 A CN94111813 A CN 94111813A CN 1037115 C CN1037115 C CN 1037115C
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- gold
- composite inhibitor
- carbonaceous
- cyaniding
- inhibitor
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Abstract
The present invention relates to a method for enhancing cyaniding leaching rate and recovery of carbonaceous gold ores by a compound inhibitor, which is characterized in that the compound inhibitor is led in carbonaceous oxidation type gold ore cyaniding technology. The compound inhibitor is prepared by various organic matters of different molecular sizes, forms and polarities according to appropriate proportion under specific conditions. The compound inhibitor can effectively suppress the adsorption capacity of gold in a cyanide solution to carbonaceous substances. For an oxidation type gold ore the gold grade of which is 1.0 to 10 gram / ton, and the organic carbon content is 0.1 to 10%, the leaching recovery of gold can be respectively enhanced to 30% to more than 100% by carbon soakage, carbon pulp, zinc displacement or heap leaching technology. The present invention has obvious economical and social benefit.
Description
The present invention relates to a kind of composite inhibitor that adds carbonaceous gold ore is carried out the gold extracting method that cyaniding is leached, it is under normal temperature carbonaceous gold ore to be carried out pre-treatment with efficient composite inhibitor, cyanidation technology extracts gold from routinely again, and the leaching yield and the rate of recovery are greatly improved.
In the carbonaceous oxidizing type of gold ore cyanidation-leaching process owing to the carbonaceous thing reduces its leaching yield to the strong adsorption effect of dissolve gold greatly, though this class ore can make leaching yield improve after pre-treatment such as flotation or roasting, but exist energy consumption and smelting cost to increase and the problem of environmental pollution aspect.Adopt the so-called charcoal soaking technology (CIL) that cyaniding and charcoal absorption carry out simultaneously or add kerosene and suppress the later leaching yield that technology that charcoal soaks also can improve this class gold mine of carrying out again, the CA1062918 report is smelted and is adopted cyanidation technology to add the graphite inhibitor in the carbonaceous gold ore, particularly kerosene is as inhibitor, Sorp-tion properties of carbon-containing comp-onents of gold ores and their suppressionduring cyaniding Ref.Zh.Meta.1970 introduces a kind of being the carbonaceous gold ore cyanidation technology of inhibitor to the nitro-azo salicylic acid, Possiblehydrometallurgical treatment of gold-arsericCarbonaceous concentrates Igr.Vyssh.VcheclTsvet Met 1972 (6) 97. relates in a kind of carbonaceous gold ore cyanidation technology with N-methyl p-aminophenol sulfate, amidol, Resorcinol, benzenetriols etc. are the research document of inhibitor, these methods all can not be eliminated the gold that still has significant proportion when carbonaceous thing content is higher in the influence, particularly ore of carbonaceous thing fully and adsorbed by the carbonaceous thing and can't leach recovery.
Be widely used in the dump leaching technology of handling low-grade gold at present and also can't from low-grade carbonaceous oxidizing type of gold ore, leach the recovery gold effectively, its reason is that the dump leaching ore grain size is big, extraction time reaches hundreds of hours, dissolve gold most of even all may be absorbed by the carbonaceous thing, thus make the heap leaching rate of this class ore very low even be zero.Therefore, still do not have reported in literature, do not obtain development and use in the world wide yet about the research and the application of the dump leaching of low-grade carbonaceous oxidizing type of gold ore.
The objective of the invention is provides a kind of composite inhibitor that adds that carbonaceous gold ore is carried out the gold extracting method that cyaniding is leached at the deficiencies in the prior art face, be characterized in carbonaceous oxidizing type of gold ore cyanidation technology, introducing composite inhibitor, this composite inhibitor is to be prepared under certain conditions by suitable proportioning by the different multiple organism of molecular size, form and polarity, and it can suppress the adsorptive power of carbonaceous thing to gold in the cyanating solution effectively.As gold grade is 1.0-10 gram/ton, and organic carbon content is that 0.1～10% oxidizing type of gold ore adopts that charcoal soaks, charcoal slurry, zinc displacement or heap leaching method all can make the leaching rate of recovery of gold improve 30% respectively to more than 100%, and remarkable economic efficiency is arranged.
Interpolation composite inhibitor provided by the invention carries out the gold extracting method that cyaniding is leached to carbonaceous gold ore, is characterized in:
1. the composition of composite inhibitor and recipe ingredient (by weight) are:
Naphthalene derivatives C
10H
6R
210-50 part such as (available 1 or the 2-naphthene sulfonic acid, 1 or beta naphthal, 1 or the 2-naphthylamines, 1 or 2-naphthalene bromide at least a)
R is H in the formula, OH, Cl, NO
2, NH
2Or SO
3H
Benzene derivative C
6H
2R
4(available nitrophenols, tribromophenol, para-chlorophenol, aniline or Phenylsulfonic acid etc. are at least a) 10-50 part
R is H in the formula, OH, Br, NO
2, NH
2Or SO
3H
Replace first, ethane C
nH
2n-2R
4(methylene dichloride or tetracol phenixin etc. are at least a for available trichloroethane, trichloromethane) 10-50 part
N=1 in the formula～2, R is H, OH, Cl or Br.
Several substituting groups of same compound can be identical, also can be inequality, but OH, NH
3And SO
3H all no more than 1.
Tensio-active agent C
mH
2m+1Q (available sodium laurylsulfonate, OP-10, sodium stearate, Sodium dodecylbenzene sulfonate or tween-80 etc. are at least a) 0-50 part
M=11 in the formula～17, Q is COONa, SO
3Na, C
6H
4(OC
2H
4)
xOH or OC
6H
6(OH)
2X 〉=100
Alkaline hydrated oxide M (OH)
p(available hydrogen potassium oxide, sodium hydroxide, calcium hydroxide, magnesium hydroxide or aluminium hydroxide etc.) 0-20 part
M is K in the formula, Na, and Ca, Mg, Al,
P is 1,2,3,
2. with composite inhibitor 0.2-2 part, add in 1000-10000 part water, stir and make it abundant dissolving, again the inhibitor aqueous solution is added ore powder 500-5000 part, fully stirred 1～10 hour.
3. adding lime, to make pH values of pulp for 5～50 parts be 9～13.
4. sodium cyanide 0.5-5 part and gac or resin 10-100 part are added ore pulp, stirred 3～24 hours, tell gac or resin is 640 microns with screen cloth, clean.According to a conventional method desorb and from stripping workshop electrolytic recovery gold.
The preparation of composite inhibitor is with benzene derivative 10-50 part, naphthalene derivatives 10-50 part, replace first, ethane 10-50 part, tensio-active agent 0-50 part and alkaline hydrated oxide 0-20 part, weighing respectively, add in the reactor, in 20-100 ℃ of reaction 2-8 hour, the cooling back obtained the composite inhibitor finished product under normal pressure.
The present invention has following advantage:
1. composite inhibitor is to be prepared under certain condition by suitable proportioning by the different multiple organism of molecular size, form and polarity.Its preparation method is simple, and raw material sources are wide, suppresses effective, and cost is low, applies easily.
2. adopting the self-control composite inhibitor is 1.0～10 gram/tons to gold grade, organic carbon content is that the charcoal of 0.1～10% oxidized form carbonaceous gold ore soaks, charcoal slurry, zinc displacement or heap leaching method can make the leaching rate of recovery of gold improve 30% respectively to more than 100%, and remarkable economic efficiency and social benefit are arranged.
8. adopt the simple and effective of self-control composite inhibitor or the low-grade carbonaceous oxidizing type of gold ore that in the past always go out of use big to those reserves and cheaply gold extraction technology become possibility, therefore, can develop this part valuable gold resource fully effectively.
Embodiment
1. in 20 liters of plastic tanks, add 15 kilograms in water and inhibitor 10 grams, starting to stir fully dissolves it, the inhibitor aqueous solution poured into 10 kilograms of breezes are housed (gold grade is 5.79 gram/tons, organic carbon content is 1.0%) 25 liters of buckets in, add lime 50 grams, continue to stir 4 hours, adding granularity is 860 microns (diameter 0.6～2mm) gac 200 grams, sodium cyanide 20 grams, continue to stir after 10 hours and tell gac with 640 microns screen clothes, clean, pack in the glass column with NaOH-NaCN-MeOH liquid 80 ℃ of following desorbs, stripping liquid electrolysis again after methyl alcohol is reclaimed in distillation obtains 48.9 milligrams of gold from stainless steel cathode plate at last, the leaching yield of gold is 88.2%, and the rate of recovery is 84.5%.
2. soak after operation finishes and sieve out gac at embodiment 1 described charcoal, in ore pulp, add gac 100～200 grams and sodium cyanide 5～10 grams again, stirred 1～5 hour, sieve out gac, clean, utilize at present conventional 3～5 stage countercurrent charcoal soaking technologies by that analogy, the leaching rate of recovery of gold can also improve 1-10%.
3. carbon slurry process (CIP): the preparation inhibitor aqueous solution also adds and stirs after 4 hours in the breeze, add steps such as lime and sodium cyanide with embodiment 1, agitation leach added gac after 10 hours, continue to stir 3 hours, sieve out gac, clean, the operation of desorb and electrolytic recovery gold is with embodiment 1, characteristics are that the gac wear rate is lower, and the leaching rate of recovery of gold is near embodiment 1.
4. zinc dust precipitation technology: inhibition is identical with embodiment 3 with leaching operation, leach to finish the back adopt filter or repeatedly decant with infusion solution and slag separation, 0.1 gram zinc powder is added the leaching clear liquid to be stirred 30 minutes, the filtering separation throw out, adopt sour Xian and pyrogenic process SEPARATION OF GOLD at last, characteristics are that the rate of recovery is all received height, is applicable to the smelting of the carbonaceous gold ore that argentiferous is higher to gold and silver-colored separating.
5. in 20 liters of plastic tanks, add 15 kilograms in water and inhibitor 2 grams, start to stir and make it abundant dissolving, (gold grade is 4.24 gram/tons to the granularity of packing in 400 * 400 millimeters of φ for＜50 millimeters ore, organic carbon content is 2.5%) 20 kilograms, with the continuous evenly sprinkle ore 48 hours of the inhibitor aqueous solution for preparing, the sodium cyanide solution of using 500 mg/litre again is sprinkle 240 hours continuously evenly, contain golden leach liquor by the adsorption column of 50 milliliters of gacs is housed, effluent liquid is reused for sprinkle after adding sodium cyanide, after leaching and recovery are finished, press 50.0 milligrams of embodiment 2 described desorbs and electrolytic recovery gold, the leaching yield and the rate of recovery of gold are respectively 70.2% and 68.4%.
6. get 2-naphthene sulfonic acid 100 gram, tribromophenol 100 grams, trichloroethane 100 grams, sodium stearate 50 grams and caustic soda 20 grams add in 500 milliliters the three-necked bottle, and reaction is 4 hours about heating in water bath to 80 ℃, acquisition oily composite inhibitor finished product after the cooling.
7. get p-NP 120 grams, trichloromethane 120 grams in the three-necked bottle that OP-10 emulsifying agent (being the alkyl phenoxy polyethylene oxide) 60 grams and white lime 10 gram addings are 500 milliliters, add 50 milliliters in water again, reaction is 4 hours about heating in water bath to 60 ℃, and the cooling back obtains emulsus composite inhibitor finished product.
8. get beta naphthal 100 gram, para-chlorophenol 100 grams, sodium laurylsulfonate 50 grams and caustic soda 20 grams add in 500 milliliters the three-necked bottle, add 50 milliliters of entry again, and reaction is 4 hours about heating in water bath to 80 ℃, the brown composite inhibitor finished product of cooling acquisition.
Claims (7)
1. one kind is added composite inhibitor to the gold extracting method that carbonaceous gold ore carries out the cyaniding leaching, it is characterized in that:
(1) composition of composite inhibitor and recipe ingredient (by weight) are:
Naphthalene derivatives C
10H
5R
210-50 part
R is H in the formula, OH, Cl, Br
2NO
2, NH
2Or SO
2H
Benzene derivative C
6H
2R
410-50 part
R is H in the formula, OH, Br, Cl
2NO
2, NH
2Or SO
3H
Replace first, ethane C
nH
2n-2R
410-50 part
N=1 in the formula～2, R is H, OH, Cl or Br
Tensio-active agent C
mH
2m+1Q 0-50 part
M=11 in the formula～17, Q is COONa, SO
3Na, C
5H
4(OC
2H
4)
xOH or OC
2H
6(OH)
2, x 〉=100
Alkaline hydrated oxide M (OH)
p0-20 part
M is K, Na, and Ca, Mg, Al, p are 1,2,3
(2) composite inhibitor 0.2-2 part is added in 1000-10000 part water, stirs and make it abundant dissolving, again the inhibitor aqueous solution is added breeze 500-5000 part, fully stirred 1～10 hour,
(3) adding lime 5-50 part, to make pH values of pulp be 9-13,
(4) sodium cyanide 0.5-5 part and gac or resin 10-100 part are added ore pulp, stirred 3-24 hour, tell gac or resin is 640 microns with screen cloth, clean, according to a conventional method desorb and from stripping workshop electrolytic recovery gold.
2. according to the described interpolation composite inhibitor of claim 1 carbonaceous gold ore is carried out the gold extracting method that cyaniding is leached, it is characterized in that the naphthalene derivatives that composite inhibitor is formed is 1 or 2 naphthene sulfonic acid, 1 or 2 naphthols, 1 or the 2-naphthylamines, 1 or the 2-naphthalene bromide at least a.
3. according to the described interpolation composite inhibitor of claim 1 carbonaceous gold ore is carried out the gold extracting method that cyaniding is leached, it is characterized in that the benzene derivative that composite inhibitor is formed is a p-NP, tribromophenol, para-chlorophenol, aniline or Phenylsulfonic acid are at least a.
4. according to the described interpolation composite inhibitor of claim 1 carbonaceous gold ore is carried out the gold extracting method that cyaniding is leached, it is characterized in that replacement first, the ethane that composite inhibitor is formed is trichloroethane, trichloromethane, methylene dichloride or tetracol phenixin are at least a.
5. according to the described interpolation composite inhibitor of claim 1 carbonaceous gold ore is carried out the gold extracting method that cyaniding is leached, it is characterized in that the tensio-active agent that composite inhibitor is formed is a sodium laurylsulfonate, OP-10, sodium stearate, Sodium dodecylbenzene sulfonate or tween-80 are at least a.
6. according to the described interpolation composite inhibitor of claim 1 carbonaceous gold ore is carried out the gold extracting method that cyaniding is leached, it is characterized in that the alkaline hydrated oxide that composite inhibitor is formed is a potassium hydroxide, sodium hydroxide, calcium hydroxide, magnesium hydroxide or aluminium hydroxide are at least a.
7. according to the described interpolation composite inhibitor of claim 1 carbonaceous gold ore is carried out the gold extracting method that cyaniding is leached, the preparation that it is characterized in that composite inhibitor is with naphthalene derivatives 10-50 part, benzene derivative 10-50 part, replace first, ethane 10-50 part, the weighing respectively of tensio-active agent 0-50 part and alkaline hydrated oxide 0-20 part, add in the reactor, in 20-100 ℃ of reaction 2-8 hour, the cooling back obtained the composite inhibitor finished product under normal pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94111813A CN1037115C (en) | 1994-06-29 | 1994-06-29 | Method for raising cyaniding extraction rate and recovery percent of carbonaceous gold ore by compound inhibitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94111813A CN1037115C (en) | 1994-06-29 | 1994-06-29 | Method for raising cyaniding extraction rate and recovery percent of carbonaceous gold ore by compound inhibitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1101948A CN1101948A (en) | 1995-04-26 |
| CN1037115C true CN1037115C (en) | 1998-01-21 |
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ID=5035645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94111813A Expired - Fee Related CN1037115C (en) | 1994-06-29 | 1994-06-29 | Method for raising cyaniding extraction rate and recovery percent of carbonaceous gold ore by compound inhibitor |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1077604C (en) * | 1999-02-10 | 2002-01-09 | 昆明理工大学 | Technology for gold extraction by cyanide process with mixed auxiliary |
| AU783904B2 (en) * | 2001-04-10 | 2005-12-22 | Grd Minproc Limited | Improved processing of precious metal-containing materials |
| CN1309848C (en) * | 2002-08-15 | 2007-04-11 | 北京有色金属研究总院 | Pellelizing technology suitable for biological dump leaching and extracting metal |
| CN101012511B (en) * | 2007-02-12 | 2011-01-19 | 长春黄金研究院 | Method for eliminating calcium ion effect in gold ore bulk leaching by using descaling agent |
| CN101736154B (en) * | 2008-11-26 | 2011-09-07 | 北京有色金属研究总院 | Method for keeping biological activity in biological heap leaching process and improving leaching efficiency |
| CN101798631A (en) * | 2010-04-20 | 2010-08-11 | 王吉青 | Method for extracting gold from gold-concentration flotation tailings |
| CN103820649B (en) * | 2014-01-28 | 2015-02-18 | 中国有色桂林矿产地质研究院有限公司 | Method for extracting gold from refractory carbonaceous oxidized ore |
| CN104502331A (en) * | 2015-01-17 | 2015-04-08 | 山东黄金矿业(莱州)有限公司精炼厂 | United detection method of gold and silver elements in cyaniding liquid |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3736126A (en) * | 1971-09-24 | 1973-05-29 | Atomic Energy Commission | Gold recovery from aqueous solutions |
-
1994
- 1994-06-29 CN CN94111813A patent/CN1037115C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3736126A (en) * | 1971-09-24 | 1973-05-29 | Atomic Energy Commission | Gold recovery from aqueous solutions |
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| CN1101948A (en) | 1995-04-26 |
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