CN104313343B - A kind of high arsenic leaches gold extracting method containing gold sulfur concentrate oxidizing roasting-microwave-assisted - Google Patents
A kind of high arsenic leaches gold extracting method containing gold sulfur concentrate oxidizing roasting-microwave-assisted Download PDFInfo
- Publication number
- CN104313343B CN104313343B CN201410628726.XA CN201410628726A CN104313343B CN 104313343 B CN104313343 B CN 104313343B CN 201410628726 A CN201410628726 A CN 201410628726A CN 104313343 B CN104313343 B CN 104313343B
- Authority
- CN
- China
- Prior art keywords
- gold
- microwave
- sulfur concentrate
- assisted
- high arsenic
- 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.)
- Active
Links
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 relates to a kind of high arsenic containing gold sulfur concentrate oxidizing roasting-microwave-assisted gold extracting method.Specific implementation method is: (1) oxidizing roasting, is divided in quartz boat by high arsenic, then quartz boat is placed in resistance furnace containing gold sulfur concentrate, after roasting 2h, takes out, and after ore cooling, weighs; (2) microwave-assisted leaches, and configures special thiosulfate solution as leaching agent, by the high arsenic after roasting containing golden sulphur essence and the thiosulfate solution for preparing according to solid-to-liquid ratio in 1:2 ~ 3, be placed in microwave device microwave-assisted and leach; (3) slag meter leaching yield is calculated.Compared with directly leaching with after traditional roasting, the technology of the present invention adopts microwave-assisted thiosulfate leaching after baking, have the advantages such as leaching cycle is short, leaching yield is high, environmental pollution is little, this patent of invention is also adapted to the leaching of other high-sulfur high-arsenic refractory gold ores.
Description
Technical field
The present invention relates to the recovery technology field of high arsenic containing gold sulfur concentrate gold, be specially one and first adopt oxidizing roasting preprocessing high-arsenic containing gold sulfur concentrate, then adopt microwave-assisted to leach the technology carrying gold.
Background technology
The plumbous zinc-gold ore in Hunan often produces the high arsenic of tens thousand of ton per year containing gold sulfur concentrate.The composition of this iron concentrate is very complicated, containing gold (6.70g/t), silver (47.90g/t), sulphur (43.08%), iron (39.10%), plumbous (0.58%), zinc (0.89%), arsenic (1.02%).The how resource such as efficiency utilization gold wherein, sulphur, iron selects the long-standing a difficult problem in smelting field.Domestic and international relevant technical worker has done large quantifier elimination, but not yet makes a breakthrough.
Gold in this type of concentrate is mainly wrapped up by pyrite and arsenopyrite, and they hinder leaching agent and contact with the direct of gold, cause gold leaching rate low.And in this type of concentrate, gold is often wrapped among the lattice of these mineral, Mechanical Crushing and grinding can not make gold fully expose.
For this kind of difficult-treating gold mine resource, the method adopted at present is this type of ore of first pre-treatment, then leaches.Pretreatment process main both at home and abroad mainly contains: roasting oxidation method, pressure oxidation method, microbial oxidation, chemical oxidization method.The basic goal of these pretreatment processs makes gold dissociate out from wrap, forms monomeric gold.The leaching method of domestic and international employing is mainly agitation leach, and adopts prussiate to make leaching agent.This first pre-treatment, the method leached again, extraction time is longer, energy expenditure is higher, environmental pollution is comparatively serious, gold leaching rate is not high.
Therefore, research and development are efficient, the gold extracting method of energy-saving and environmental protection, are the keys of this kind of gold ore resource of efficiency utilization.Microwave can make atom and molecule generation vibration at high speed, thus creates more favorably thermodynamic condition for chemical reaction, all has promoter action to thermo-negative reaction or thermopositive reaction.Along with microwave technology reaches its maturity, its application in field of metallurgy is more and more extensive.Compared with traditional heating, microwave heating have do not need to contact heating object, energy be converted into non-simple heat conduction, rate of heating fast, selectivity heating can be realized to material, operation is easy to start and stop, heating from the inside of material, security is good, intelligence degree advantages of higher.And Status of Microwave-assisted Firing Technology has been applied to polymineralic leaching perhaps, as copper glance and chalcopyrite, iron trichloride, black and white tungsten ore, laterite, zinc oxide ore etc.Adopt microwave-assisted leaching-out technique, the speed of dissolving metal can be accelerated on the one hand, reduce extraction time; Effectively can improve the leaching yield of metal on the other hand.But microwave-assisted leaching-out technique is applied to wet gold extraction and there is not yet report, therefore, utilize microwave-assisted leaching-out technique to extract to be still containing the gold in gold sulfur concentrate to high arsenic and a kind ofly have new technology yet-to-be developed.
Summary of the invention
For above-mentioned situation, the invention provides a kind of high arsenic and leach gold extracting method containing the oxidizing roasting-microwave-assisted of gold sulfur concentrate, this method has that sulphur removal effect of removing arsenic is good, extraction time is short, environment protecting is good, gold leaching rate advantages of higher.
Concrete scheme is:
(1) oxidizing roasting;
(2) microwave-assisted leaches;
(3) slag meter leaching yield is calculated.
Its further step is:
Described oxidizing roasting method is: divide 30g height arsenic in quartz boat containing gold sulfur concentrate, quartz boat is placed in the chamber type electric resistance furnace that power is 4kW again, the temperature of chamber type electric resistance furnace being set as 500-700 DEG C is carried out roasting, after 2h, taking out filling the quartz boat of high arsenic containing gold sulfur concentrate.After ore cooling, weigh, calculate ore rate of weight loss.
Described microwave-assisted leaching method is: take 0.48gCuSO respectively
4, 4.74gNaS
2o
3, 1.32g (NH
4)
2sO
4, 0.378gNa
2sO
3, and measure the NH that 7.5mL concentration is 15%
3h
2o, adds in the lump in the distilled water of 100mL, obtains 0.3mol/LNaS
2o
3, 0.03mol/LCuSO
4, 1.0mol/LNH
3h
2o, 0.1mol/L (NH
4)
2sO
4, 0.3mol/LNa
2sO
3thiosulfate solution;
Mixed by the solid-to-liquid ratio (unit g/mL) of 1:2 ~ 3 containing gold sulfur concentrate and the thiosulfate solution prepared by high arsenic after 10g roasting, be placed in microwave device, microwave power set is 800W, under microwave exposure booster action, leach 0.5-2.5h again.
Described slag meter leaching yield method of calculation are: the high arsenic after being leached by microwave-assisted filters containing gold sulfur concentrate, and at 105 DEG C dry 2h, then adopt aqua regia dissolution gold wherein, adopt PUFP absorption atomic absorption method to calculate the slag meter leaching yield of gold.
Described roasting optimum temps is 700 DEG C.
Described solid-to-liquid ratio the best is 1:3.
Described extraction time the best is 2.5h.
Described high arsenic containing the gold grade of gold sulfur concentrate be 6.7g/t, sulphur content is 43.08%, arsenic content is 1.02%.
The power of described microwave device is 0-1.5kW.
Compared with directly leaching with after traditional roasting, the technology of the present invention is after carrying out roasting to high arsenic containing gold sulfur concentrate, adopt thiosulphate as leaching agent, under microwave exposure booster action, it is leached, there is the advantages such as rate of heating is fast, leaching cycle is short, gold leaching rate is high, environmental pollution is little.This patent of invention is also adapted to the leaching of other high-sulfur high-arsenic refractory gold ores.
Accompanying drawing explanation
Under the different maturing temperature of Fig. 1, high arsenic contrasts containing the leaching effect that gold sulfur concentrate routine leaches and microwave-assisted leaches;
During Fig. 2 different extraction time, height arsenic contrasts containing the conventional leaching effect leached with microwave-assisted that leaches of gold sulfur concentrate;
Fig. 3 different solid leaches containing gold sulfur concentrate routine the leaching effect leached with microwave-assisted than lower high arsenic and contrasts.
Specific implementation method
The invention will be further described below.
I material
Microwave device (power be 0-1.5kW, frequency is 2450MHz), high arsenic is containing gold sulfur concentrate (gold grade is 6.7g/t, sulphur content is 43.08%, arsenic content be 1.02%), quartz boat, chamber type electric resistance furnace (power is 4kW).
II implementation method
High arsenic is laid in quartz boat containing gold sulfur concentrate, then quartz boat is put into the chamber type electric resistance furnace that power is 4kW, the temperature of chamber type electric resistance furnace being set as 500-700 DEG C, with this understanding after roasting 2h, taking out filling the quartz boat of high arsenic containing gold sulfur concentrate.After high arsenic is containing gold sulfur concentrate cooling, weigh, calculate ore rate of weight loss.Then 0.48gCuSO is taken respectively
4, 4.74gNaS
2o
3, 1.32g (NH
4)
2sO
4, 0.378gNa
2sO
3, and measure the NH that 7.5mL concentration is 15%
3h
2o, adds in the lump in the distilled water of 100mL, obtains 0.3mol/LNaS
2o
3, 0.03mol/LCuSO
4, 1.0mol/LNH
3h
2o, 0.1mol/L (NH
4)
2sO
4, 0.3mol/LNa
2sO
3thiosulfate solution.Again the high arsenic after roasting is mixed according to the solid-to-liquid ratio of 1:2-1:3 containing gold sulfur concentrate and the thiosulfate solution prepared, be placed in microwave device, be 800W by microwave power set, 0.5-2.5h is leached under microwave exposure booster action, take out the high arsenic after leaching containing gold sulfur concentrate, filter and obtain filter residue, filter residue is dry 2h at 105 DEG C, adopt aqua regia dissolution gold wherein, adopt PUFP absorption atomic absorption method to calculate the slag meter leaching yield of gold.
III principle
1, oxidizing roasting principle:
In oxidizing roasting process, first there is thermal dissociation in sulfide and arsenide, and thermal dissociation product at a higher temperature oxygenolysis occurs, and roughly step is as follows:
2FeAsS=2FeS+As
2
2FeS
2=2FeS+S
2
4FeAsS+4FeS
2=8FeS+As
4S
4
2As
2+3O
2=As
4O
6
S
2+2O
2=2SO
2
As
4S
4+7O
2=As
4O
6+4SO
2
3FeS+5O
2=Fe
3O
4+3SO
2
4FeS+7O
2=2Fe
2O
3+4SO
2
4Fe
3O
4+O
2=6Fe
2O
3
Through above-mentioned reaction, on the one hand, in concentrate, the sulfide of trapping gold and arsenide have changed into metal oxides, reach the object of exposed gold; On the other hand, the mineral after oxidizing roasting become loose porous, increase the contact area of leaching agent and exposed gold, thus improve the leaching yield of gold.
2, microwave-assisted Leaching mechanism:
Microwave field can directly act on chemical system thus promotes or change all kinds of chemical reaction.Under microwave exposure effect, the polar molecule in leaching agent, under microwave field effect, occurs acutely to rotate, causes heat effect due to dielectric loss, accelerate the carrying out of chemical reaction.Microwave except can except accelerated reaction, also has intermolecular direct effect and the non-thermal effect that causes, promotes the dissolving of valuable mineral in leaching agent, reduce the activation energy of chemical reaction, produce katalysis to chemical reaction.Thus accelerate the leaching velocity of mineral, improve the rate of recovery of mineral.
Water molecules belongs to polar molecule, has very strong polarity, has very strong receptivity to micro-wave energy, and along with the alternately change of microwave electromagnetic field, water molecules shakes wherein, intermolecular mutual collision, friction and produce heat energy.Thus accelerate the dissolving of monomeric gold in thiosulfate solution after dissociating, Reaction time shorten.
IV embodiment
A kind of high arsenic leaches gold extracting method containing gold sulfur concentrate oxidizing roasting-microwave-assisted, and its concrete steps are:
(1) 30g height arsenic is laid in quartz boat containing gold sulfur concentrate, again quartz boat is placed in the chamber type electric resistance furnace that power is 4kW, the temperature of chamber type electric resistance furnace being set as 500-700 DEG C, with this understanding after roasting 2h, taking out filling the quartz boat of high arsenic containing gold sulfur concentrate.After ore cooling, weigh, calculate ore rate of weight loss.
(2) 0.48gCuSO is taken respectively
4, 4.74gNaS
2o
3, 1.32g (NH
4)
2sO
4, 0.378gNa
2sO
3, and measure the NH that 7.5mL concentration is 15%
3h
2o, adds in the lump in the distilled water of 100mL, obtains 0.3mol/LNaS
2o
3, 0.03mol/LCuSO
4, 1.0mol/LNH
3h
2o, 0.1mol/L (NH
4)
2sO
4, 0.3mol/LNa
2sO
3thiosulfate solution.Mixed according to the solid-to-liquid ratio of 1:2 ~ 3 containing gold sulfur concentrate and the thiosulfate solution prepared by high arsenic after 10g roasting, be placed in microwave device, microwave power set is 800W, under microwave exposure booster action, leach 0.5-2.5h again.
(3) the high arsenic after being leached by microwave-assisted filters and drying containing gold sulfur concentrate, then adopts aqua regia dissolution gold wherein, adopts PUFP absorption atomic absorption method to calculate the slag meter leaching yield of gold.
V embodiment
Embodiment 1,30g height arsenic is laid in quartz boat containing gold sulfur concentrate, then quartz boat is placed in chamber type electric resistance furnace that power is 4kW, the temperature of chamber type electric resistance furnace is set as 500 DEG C, with this understanding after roasting 2h, take out filling the quartz boat of high arsenic containing gold sulfur concentrate.After ore cooling, weigh, ore rate of weight loss is 24.5%.
By 10g rate of weight loss be 24.5% and the thiosulfate solution prepared of 20mL add (solid-to-liquid ratio is 1:2) in Erlenmeyer flask, the Erlenmeyer flask being stoppered rubber plug is fixed in constant incubator, the temperature of constant incubator is set as 50 DEG C, speed setting is 250rpm, vibration is leached after 18h and is taken out with this understanding, is filtered by high arsenic containing gold sulfur concentrate, and at 105 DEG C dry 2h, adopt aqua regia dissolution gold wherein again, adopt PUFP absorption atomic absorption method to calculate slag meter leaching yield.The leaching yield obtaining gold is 59.7%, sees Figure of description 1.
The thiosulfate solution that baked for 10g high arsenic has been prepared containing gold sulfur concentrate and 30mL is added (solid-to-liquid ratio is 1:3) in reaction vessel, the reaction vessel being stoppered rubber plug is fixedly placed in microwave device, power setting is 800W, temperature is set as 60 DEG C, leach after 2.5h with this understanding and take out, high arsenic is filtered containing gold sulfur concentrate, and at 105 DEG C dry 2h, adopt aqua regia dissolution gold wherein again, adopt PUFP absorption atomic absorption method to calculate slag meter leaching yield.The leaching yield obtaining gold is 60.9%.See Figure of description 1.After adopting this patent, the highest leaching yield of gold improves 1.2%.
Embodiment 2,30g height arsenic is laid in quartz boat containing gold sulfur concentrate, then quartz boat is placed in chamber type electric resistance furnace that power is 4kW, the temperature of chamber type electric resistance furnace is set as 600 DEG C, with this understanding after roasting 2h, take out filling the quartz boat of high arsenic containing gold sulfur concentrate.After ore cooling, weigh, ore rate of weight loss is 27.4%.
The thiosulfate solution that baked for 10g high arsenic has been prepared containing gold sulfur concentrate and 20mL is added (solid-to-liquid ratio is 1:2) in Erlenmeyer flask, the Erlenmeyer flask being stoppered rubber plug is fixed in constant incubator, the temperature of constant incubator is set as 50 DEG C, speed setting is 250rpm, vibration is leached after 18h and is taken out with this understanding, is filtered by high arsenic containing gold sulfur concentrate, and at 105 DEG C dry 2h, adopt aqua regia dissolution gold wherein again, adopt PUFP absorption atomic absorption method to calculate slag meter leaching yield.The leaching yield obtaining gold is 65.2%, sees Figure of description 1.
The thiosulfate solution that baked for 10g high arsenic has been prepared containing gold sulfur concentrate and 30mL is added (solid-to-liquid ratio is 1:3) in reaction vessel, the reaction vessel being stoppered rubber plug is fixedly placed in microwave device, power setting is 800W, temperature is set as 60 DEG C, leach after 2.5h with this understanding and take out, high arsenic is filtered containing gold sulfur concentrate, and at 105 DEG C dry 2h, adopt aqua regia dissolution gold wherein again, adopt PUFP absorption atomic absorption method to calculate slag meter leaching yield.The leaching yield obtaining gold is 67.1%.See Figure of description 1.After adopting this patent, the highest leaching yield of gold improves 1.9%.
Embodiment 3,30g height arsenic is laid in quartz boat containing gold sulfur concentrate, then quartz boat is placed in chamber type electric resistance furnace that power is 4kW, the temperature of chamber type electric resistance furnace is set as 700 DEG C, with this understanding after roasting 2h, take out filling the quartz boat of high arsenic containing gold sulfur concentrate.After ore cooling, weigh, ore rate of weight loss is 29.5%.
The thiosulfate solution that baked for 10g high arsenic has been prepared containing gold sulfur concentrate and 20mL is added (solid-to-liquid ratio is 1:2) in Erlenmeyer flask, the Erlenmeyer flask being stoppered rubber plug is fixed in constant incubator, constant incubator temperature is set as 50 DEG C, speed setting is 250rpm, vibration is leached after 18h and is taken out with this understanding, is filtered by high arsenic containing gold sulfur concentrate, and at 105 DEG C dry 2h, adopt aqua regia dissolution gold wherein again, adopt PUFP absorption atomic absorption method to calculate slag meter leaching yield.The leaching yield obtaining gold is 71.2%, sees Figure of description 1.
The thiosulfate solution that baked for 10g high arsenic has been prepared containing gold sulfur concentrate and 30mL is added (solid-to-liquid ratio is 1:3) in reaction vessel, the reaction vessel being stoppered rubber plug is fixedly placed in microwave device, power setting is 800W, temperature is set as 60 DEG C, take out after leaching 2.5h with this understanding, high arsenic is filtered containing gold sulfur concentrate, and at 105 DEG C dry 2h, adopt aqua regia dissolution gold wherein again, adopt PUFP absorption atomic absorption method to calculate slag meter leaching yield, the leaching yield obtaining gold is 72.1%.See Figure of description 1.After adopting this patent, the highest leaching yield of gold improves 0.9%.
Embodiment 4,30g height arsenic is laid in quartz boat containing gold sulfur concentrate, then quartz boat is placed in chamber type electric resistance furnace that power is 4kW, the temperature of chamber type electric resistance furnace is set as 700 DEG C, with this understanding after roasting 2h, take out filling the quartz boat of high arsenic containing gold sulfur concentrate.After ore cooling, weigh, ore rate of weight loss is 29.5%.
The thiosulfate solution that baked for 10g high arsenic has been prepared containing gold sulfur concentrate and 20mL is added (solid-to-liquid ratio is 1:2) in Erlenmeyer flask, the Erlenmeyer flask being stoppered rubber plug is fixed in constant incubator, constant incubator temperature is set as 50 DEG C, speed setting is 250rpm, vibration is leached after 0.5h and is taken out with this understanding, is filtered by high arsenic containing gold sulfur concentrate, and at 105 DEG C dry 2h, adopt aqua regia dissolution gold wherein again, adopt PUFP absorption atomic absorption method to calculate slag meter leaching yield.Show that golden leaching yield is 12.1%, see Figure of description 2.
The thiosulfate solution that baked for 10g high arsenic has been prepared containing gold sulfur concentrate and 30mL is added (solid-to-liquid ratio is 1:3) in reaction vessel, the reaction vessel being stoppered rubber plug is fixedly placed in microwave device, power setting is 800W, temperature is set as 60 DEG C, leach after 0.5h with this understanding and take out, high arsenic is filtered containing gold sulfur concentrate, and at 105 DEG C dry 2h, adopt aqua regia dissolution gold wherein again, adopt PUFP absorption atomic absorption method to calculate slag meter leaching yield.The leaching yield obtaining gold is 29.2%, sees Figure of description 2.After adopting this patent, gold leaching rate improves 17.1%.
Embodiment 5,30g height arsenic is laid in quartz boat containing gold sulfur concentrate, then quartz boat is placed in the chamber type electric resistance furnace that power is 4kW, the temperature of chamber type electric resistance furnace is set as 700 DEG C, with this understanding after roasting 2h, take out filling the quartz boat of high arsenic containing gold sulfur concentrate.After ore cooling, weigh, ore rate of weight loss is 29.5%.
The thiosulfate solution that baked for 10g high arsenic has been prepared containing gold sulfur concentrate and 20mL is added (solid-to-liquid ratio is 1:2) in Erlenmeyer flask, the Erlenmeyer flask being stoppered rubber plug is fixed in constant incubator, constant incubator temperature is set as 50 DEG C, speed setting is 250rpm, vibration is leached after 1h and is taken out with this understanding, is filtered by high arsenic containing gold sulfur concentrate, and at 105 DEG C dry 2h, adopt aqua regia dissolution gold wherein again, adopt PUFP absorption atomic absorption method to calculate slag meter leaching yield.The leaching yield obtaining gold is 18.6%, sees Figure of description 2.
The thiosulfate solution that baked for 10g high arsenic has been prepared containing gold sulfur concentrate and 30mL is added (solid-to-liquid ratio is 1:3) in reaction vessel, the reaction vessel being stoppered rubber plug is fixedly placed in microwave device, power setting is 800W, temperature is set as 60 DEG C, leach after 1h with this understanding and take out, high arsenic is filtered containing gold sulfur concentrate, and at 105 DEG C dry 2h, adopt aqua regia dissolution gold wherein again, adopt PUFP absorption atomic absorption method to calculate slag meter leaching yield.The leaching yield obtaining gold is 46.3%, sees Figure of description 2.After adopting this patent, gold leaching rate improves 27.7%.
Embodiment 6,30g height arsenic is laid in quartz boat containing gold sulfur concentrate, then quartz boat is placed in the chamber type electric resistance furnace that power is 4kW, the temperature of chamber type electric resistance furnace is set as 700 DEG C, with this understanding after roasting 2h, take out filling the quartzy Noah's ark of high arsenic containing gold sulfur concentrate.After ore cooling, weigh, ore rate of weight loss is 29.5%.
The thiosulfate solution that baked for 10g high arsenic has been prepared containing gold sulfur concentrate and 20mL is added in Erlenmeyer flask, namely solid-to-liquid ratio is 1:2, the Erlenmeyer flask being stoppered rubber plug is fixed in constant incubator, constant incubator temperature is set as 50 DEG C, and speed setting is 250rpm, and vibration is taken out after leaching 1.5h with this understanding, high arsenic is filtered containing gold sulfur concentrate, and at 105 DEG C dry 2h, then adopt aqua regia dissolution gold wherein, adopt PUFP absorption atomic absorption method to calculate slag meter leaching yield.The leaching yield obtaining gold is 33.5%, sees Figure of description 2.
The thiosulfate solution that baked for 10g high arsenic has been prepared containing gold sulfur concentrate and 30mL is added (solid-to-liquid ratio is 1:3) in reaction vessel, the reaction vessel being stoppered rubber plug is fixedly placed in microwave device, power setting is 800W, temperature is set as 60 DEG C, leach after 1.5h with this understanding and take out, high arsenic is filtered containing gold sulfur concentrate, and at 105 DEG C dry 2h, adopt aqua regia dissolution gold wherein again, adopt PUFP absorption atomic absorption method to calculate slag meter leaching yield.The leaching yield obtaining gold is 54.2%, sees Figure of description 2.After adopting this patent, gold leaching rate improves 20.7%.
Embodiment 7,30g height arsenic is laid in quartz boat containing gold sulfur concentrate, then quartz boat is placed in the chamber type electric resistance furnace that power is 4kW, the temperature of chamber type electric resistance furnace is set as 700 DEG C, with this understanding after roasting 2h, take out filling the quartzy Noah's ark of high arsenic containing gold sulfur concentrate.After ore cooling, weigh, ore rate of weight loss is 29.5%.
The thiosulfate solution that baked for 10g high arsenic has been prepared containing gold sulfur concentrate and 20mL is added (namely solid-to-liquid ratio is 1:2) in Erlenmeyer flask, the Erlenmeyer flask being stoppered rubber plug is fixed in constant incubator, constant incubator temperature is set as 50 DEG C, speed setting is 250rpm, vibration is leached after 2h and is taken out with this understanding, is filtered by high arsenic containing gold sulfur concentrate, and at 105 DEG C dry 2h, adopt aqua regia dissolution gold wherein again, adopt PUFP absorption atomic absorption method to calculate slag meter leaching yield.The leaching yield obtaining gold is 39.7%, sees Figure of description 2.
The thiosulfate solution that baked for 10g high arsenic has been prepared containing gold sulfur concentrate and 30mL is added (solid-to-liquid ratio is 1:3) in reaction vessel, the reaction vessel being stoppered rubber plug is fixedly placed in microwave device, power setting is 800W, temperature is set as 60 DEG C, leach after 2h with this understanding and take out, high arsenic is filtered containing gold sulfur concentrate, and at 105 DEG C dry 2h, adopt aqua regia dissolution gold wherein again, adopt PUFP absorption atomic absorption method to calculate slag meter leaching yield.The leaching yield obtaining gold is 66.5%, sees Figure of description 2.After adopting this patent, gold leaching rate improves 26.8%.
Embodiment 8,30g height arsenic is laid in quartz boat containing gold sulfur concentrate, then quartz boat is placed in the chamber type electric resistance furnace that power is 4kW, the temperature of chamber type electric resistance furnace is set as 700 DEG C, with this understanding after roasting 2h, take out filling the quartzy Noah's ark of high arsenic containing gold sulfur concentrate.After ore cooling, weigh, ore rate of weight loss is 29.5%.
The thiosulfate solution that baked for 10g high arsenic has been prepared containing gold sulfur concentrate and 20mL is added (solid-to-liquid ratio is 1:2) in Erlenmeyer flask, the Erlenmeyer flask being stoppered rubber plug is fixed in constant incubator, constant incubator temperature is set as 50 DEG C, speed setting is 250rpm, vibration is leached after 18h and is taken out with this understanding, is filtered by high arsenic containing gold sulfur concentrate, and at 105 DEG C dry 2h, adopt aqua regia dissolution gold wherein again, adopt PUFP absorption atomic absorption method to calculate slag meter leaching yield.The leaching yield obtaining gold is 71.2%, sees Figure of description 3.
The thiosulfate solution that baked for 10g high arsenic has been prepared containing gold sulfur concentrate and 30mL is added (namely solid-to-liquid ratio is 1:3) in reaction vessel, the reaction vessel being stoppered rubber plug is fixedly placed in microwave device, power setting is 800W, temperature is set as 60 DEG C, take out after leaching 2h with this understanding, high arsenic is filtered containing gold sulfur concentrate, and at 105 DEG C dry 2h, adopt aqua regia dissolution gold wherein again, adopt PUFP absorption atomic absorption method to calculate slag meter leaching yield, the leaching yield obtaining gold is 71.7%.See Figure of description 3.After adopting this patent, gold leaching rate improves 0.5%.
Embodiment 9,30g height arsenic is laid in quartz boat containing gold sulfur concentrate, then quartz boat is placed in the chamber type electric resistance furnace that power is 4kW, the temperature of chamber type electric resistance furnace is set as 700 DEG C, with this understanding after roasting 2h, take out filling the quartzy Noah's ark of high arsenic containing gold sulfur concentrate.After ore cooling, weigh, ore rate of weight loss is 29.5%.
The thiosulfate solution that baked for 10g high arsenic has been prepared containing gold sulfur concentrate and 20mL is added (solid-to-liquid ratio is 1:2) in Erlenmeyer flask, the Erlenmeyer flask being stoppered rubber plug is fixed in constant incubator, constant incubator temperature is set as 50 DEG C, speed setting is 250rpm, vibration is taken out after leaching 2h with this understanding, high arsenic is filtered containing gold sulfur concentrate, and at 105 DEG C dry 2h, adopt aqua regia dissolution gold wherein again, PUFP absorption atomic absorption method is adopted to calculate slag meter leaching yield, the leaching yield obtaining gold is 67.5%, sees Figure of description 3.
The thiosulfate solution that baked for 10g high arsenic has been prepared containing gold sulfur concentrate and 30mL is added in reaction vessel, namely solid-to-liquid ratio is 1:3, the reaction vessel being stoppered rubber plug is fixedly placed in microwave device, power setting is 800W, temperature is set as 60 DEG C, take out after leaching 2.5h with this understanding, high arsenic is filtered containing gold sulfur concentrate, and at 105 DEG C dry 2h, adopt aqua regia dissolution gold wherein again, adopt PUFP absorption atomic absorption method to calculate slag meter leaching yield, the leaching yield obtaining gold is 72.1%, sees Figure of description 3.After adopting this patent, gold leaching rate improves 4.6%.
Below be only better embodiment of the present invention, according to above-mentioned design of the present invention, those skilled in the art also can make various amendment and conversion.Such as, extend microwave-assisted extraction time, change microwave-assisted leaching power, change maturing temperature, change solid-to-liquid ratio, use other leaching agents instead and adopt other difficult-treating gold mine resource of this method process, etc.But similar this conversion and amendment all belong to essence of the present invention.
Claims (6)
1. high arsenic leaches a gold extracting method containing gold sulfur concentrate oxidizing roasting-microwave-assisted, and it is characterized in that, concrete steps are:
(1) oxidizing roasting;
(2) microwave-assisted leaches;
(3) slag meter leaching yield is calculated;
Described oxidizing roasting method is: divide 30g height arsenic in quartz boat containing gold sulfur concentrate, quartz boat is placed in the chamber type electric resistance furnace that power is 4kW again, the temperature of chamber type electric resistance furnace is set as 500-700 DEG C is carried out roasting, after 2h, take out filling the quartz boat of high arsenic containing gold sulfur concentrate, after ore cooling, weigh, calculate ore rate of weight loss;
Described microwave-assisted leaching method is: take 0.48gCuSO respectively
4, 4.74gNaS
2o
3, 1.32g (NH
4)
2sO
4, 0.378gNa
2sO
3, and measure the NH that 7.5mL concentration is 15%
3h
2o, adds in the lump in the distilled water of 100mL, obtains 0.3mol/LNaS
2o
3, 0.03mol/LCuSO
4, 1.0mol/LNH
3h
2o, 0.1mol/L (NH
4)
2sO
4, 0.3mol/LNa
2sO
3thiosulfate solution;
High arsenic after 10g roasting is contained gold sulfur concentrate and the solid-to-liquid ratio of the thiosulfate solution prepared by 1:2 ~ 3 again, unit g/mL, mixes, and is placed in microwave device, and microwave power set is 800W, under microwave exposure booster action, leach 0.5-2.5h;
Described calculating slag meter leaching yield method is: the high arsenic after being leached by microwave-assisted filters containing gold sulfur concentrate, and at 105 DEG C dry 2h, then adopt aqua regia dissolution gold wherein, adopt PUFP absorption atomic absorption method to calculate the slag meter leaching yield of gold.
2. the high arsenic of one according to claim 1 leaches gold extracting method containing gold sulfur concentrate oxidizing roasting-microwave-assisted, and it is characterized in that, described roasting optimum temps is 700 DEG C.
3. the high arsenic of one according to claim 1 leaches gold extracting method containing gold sulfur concentrate oxidizing roasting-microwave-assisted, and it is characterized in that, described solid-to-liquid ratio the best is 1:3.
4. the high arsenic of one according to claim 1 leaches gold extracting method containing gold sulfur concentrate oxidizing roasting-microwave-assisted, and it is characterized in that, described extraction time the best is 2.5h.
5. the high arsenic of one according to claim 1 leaches gold extracting method containing gold sulfur concentrate oxidizing roasting-microwave-assisted, it is characterized in that, described high arsenic containing the gold grade of gold sulfur concentrate be 6.7g/t, sulphur content is 43.08%, arsenic content is 1.02%.
6. the high arsenic of one according to claim 1 leaches gold extracting method containing gold sulfur concentrate oxidizing roasting-microwave-assisted, and it is characterized in that, the power of described microwave device is 0-1.5kW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410628726.XA CN104313343B (en) | 2014-11-11 | 2014-11-11 | A kind of high arsenic leaches gold extracting method containing gold sulfur concentrate oxidizing roasting-microwave-assisted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410628726.XA CN104313343B (en) | 2014-11-11 | 2014-11-11 | A kind of high arsenic leaches gold extracting method containing gold sulfur concentrate oxidizing roasting-microwave-assisted |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104313343A CN104313343A (en) | 2015-01-28 |
| CN104313343B true CN104313343B (en) | 2016-02-24 |
Family
ID=52368650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410628726.XA Active CN104313343B (en) | 2014-11-11 | 2014-11-11 | A kind of high arsenic leaches gold extracting method containing gold sulfur concentrate oxidizing roasting-microwave-assisted |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104313343B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106222436A (en) * | 2016-08-24 | 2016-12-14 | 铜仁市万山区盛和矿业有限责任公司 | A kind of microwave extract method of magnetic iron ore |
| CN106222435B (en) * | 2016-08-24 | 2018-06-29 | 铜仁市万山区盛和矿业有限责任公司 | A kind of method for extracting gold from arsenical pyrite using microwave |
| CN112501450B (en) * | 2020-10-28 | 2022-07-22 | 黄伟 | Gold extraction agent for treating high-sulfur high-arsenic gold ore and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497941A (en) * | 2009-03-12 | 2009-08-05 | 昆明理工大学 | Ammonia-free thiosulfate solution for leaching silver from ore |
| CN103937964A (en) * | 2014-04-28 | 2014-07-23 | 南华大学 | Novel microwave roasting and gold-extracting method for gold-bearing concentrated dimorphite |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101314815B (en) * | 2008-06-13 | 2010-09-08 | 东华大学 | Atmosphere-pressure catalytic oxidation method for high-sulfur high-arsenic hard washing golden ore concentrate |
-
2014
- 2014-11-11 CN CN201410628726.XA patent/CN104313343B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497941A (en) * | 2009-03-12 | 2009-08-05 | 昆明理工大学 | Ammonia-free thiosulfate solution for leaching silver from ore |
| CN103937964A (en) * | 2014-04-28 | 2014-07-23 | 南华大学 | Novel microwave roasting and gold-extracting method for gold-bearing concentrated dimorphite |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104313343A (en) | 2015-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Sattar et al. | Resource recovery of critically-rare metals by hydrometallurgical recycling of spent lithium ion batteries | |
| CN101509077B (en) | Method for extracting platinum, palladium, rhodium from automotive catalyst of ore phase reconstruction | |
| CN102583503B (en) | Method for preparing activated zinc oxide by utilizing high-arsenic secondary zinc oxide resource ammonia-ammonium process | |
| CN101817553B (en) | Method for treating arsenic-containing smoke dust | |
| CN106916944B (en) | A kind of method that Solid Inclusion cupric oxide ore selecting smelting combination recycles | |
| Nan et al. | Pretreatment process on refractory gold ores with As | |
| CN109321755A (en) | A kind of method of Copper making flue dust dearsenification | |
| CN102912123A (en) | Method for decomposing stone coal vanadium ore by curing sulfuric acid | |
| CN104313343B (en) | A kind of high arsenic leaches gold extracting method containing gold sulfur concentrate oxidizing roasting-microwave-assisted | |
| Wang et al. | A green process to recover valuable metals from the spent ternary lithium-ion batteries | |
| CN109750155A (en) | A method of the Call Provision from waste lithium ion cell anode material | |
| CN107586956A (en) | A kind of method of efficiently concentrating rhodium in organic rhodium catalyst waste liquid from failure | |
| CN106048251A (en) | Technological method for cleaning and efficiently treating arsenic matte | |
| CN102061388A (en) | Method for smelting ferromolybdenum by utilizing molybdenum scrap | |
| CN105483395A (en) | Method for selectively and efficiently extracting zinc and removing iron from zinc-containing electric furnace dust | |
| CN104372173B (en) | A kind of method being enriched with platinum from fluorine-containing inefficacy platinum catalyst | |
| CN106319199A (en) | Pretreatment method of antimony-and arsenic-containing refractory gold ore | |
| CN102534195A (en) | Gold extraction process method for refractory gold ore | |
| CN107185386A (en) | A kind of low nickel matte ore pulp absorbs the method for administering nitrous oxides exhaust gas | |
| CN106995880A (en) | A kind of method of uranium molybdenum ore Oxidation Leaching | |
| CN107058750A (en) | Germanic Bellamya aeruginosa comprehensive recycling process | |
| CN103820587A (en) | Method for removing arsenic from arsenic-containing iron-rich slag by volatilization | |
| CN109136565A (en) | A kind of method of cyanidation tailings harmless treatment and resource utilization | |
| CN102560102A (en) | Method for leaching nickel and molybdenum from nickel-molybdenum ores by catalytic oxidation | |
| CN103695646B (en) | Method for recovery of gold, silver and iron from gold smelting waste residue |
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 |