CN104878212A - Method and system for treating gold-containing slag - Google Patents
Method and system for treating gold-containing slag Download PDFInfo
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- CN104878212A CN104878212A CN201510217397.4A CN201510217397A CN104878212A CN 104878212 A CN104878212 A CN 104878212A CN 201510217397 A CN201510217397 A CN 201510217397A CN 104878212 A CN104878212 A CN 104878212A
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- 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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses a method and system for treating gold-containing slag. The gold-containing slag contains at least one of gold, silver, copper and iron. The method comprises the following steps: (1) carrying out first crushing treatment on the gold-containing slag to obtain gold-containing slag granules; (2) mixing the gold-containing slag granules with sodium carbonate, borax, saltpetre and copper to obtain a mixture; (3) smelting the mixture to obtain a smelting slag solution; (4) cooling the smelting slag solution to obtain solid smelting slag; and (5) carrying out second crushing treatment on the solid smelting slag to obtain tailings and an alloy ingot, wherein the alloy ingot contains gold and silver. The method can obviously enhance the recovery rates of gold and silver, and does not generate pollution in a working environment.
Description
Technical field
The invention belongs to metallurgical technology field, specifically, the present invention relates to the method and system of a kind of process containing golden slag.
Background technology
Traditional process mainly adopts plumbous ensaying method, gravity separation method, amalgam process and cyanide process etc. containing golden slag technology.Wherein, plumbous ensaying method specifically first will carry out fragmentation containing golden slag, then by fragmentation containing golden slag and NaNO
3, Na
2cO
3, PbO in mass ratio for 5:1:2:8 mixing after load fire-clay crucible, then the thin borax of one deck is covered at crucible surface, put into 1200 DEG C of High Temperature Furnaces Heating Apparatus meltings and obtain plumbous button, finally lead is detained ash and blow and obtain thick gold, but the method easily causes Lead contamination and saturnine situation to occur; Gravity separation method, amalgam process, cyanide process specifically carry out fragmentation and fine grinding to containing golden slag successively, then gravity separation method, amalgam process or cyanide process recovery valuable metal is wherein adopted, but, the method recovery process is comparatively complicated, and recovery rate of valuable metals is lower, and amalgam process may cause operating personnel's mercury poisoning.
Therefore, existing process is further improved containing the technology of golden slag.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is to propose the method and system of a kind of process containing golden slag, and the method can significantly improve the rate of recovery of Jin Heyin, and operating environment is pollution-free.
In one aspect of the invention, the present invention proposes the method for a kind of process containing golden slag, the described at least one containing containing in golden slag in gold and silver, copper and iron, described method comprises:
(1) the first break process is carried out described containing golden slag, to obtain containing golden solid impurity particle;
(2) mix described with sodium carbonate, borax, nitre, copper, to obtain mixture containing golden solid impurity particle;
(3) described mixture is carried out metallurgy, to obtain metallurgical slag liquid;
(4) described metallurgical slag liquid is carried out cooling process, to obtain solid metallurgical slag; And
(5) described solid metallurgical slag is carried out the second break process, to obtain tailings and alloy pig, wherein, containing Jin Heyin in described alloy pig.
The method containing golden slag according to the process of the embodiment of the present invention can significantly improve the rate of recovery improving gold and silver, and the grade of gold and silver is higher in gained alloy pig, operating environment is pollution-free simultaneously, thus can not work the mischief to operating personnel's health, and then significantly improves production safety coefficient.
In addition, process according to the above embodiment of the present invention can also have following additional technical characteristic containing the method for golden slag:
In some embodiments of the invention, described process comprises further containing the method for golden slag: described tailings returns and carries out described metallurgy by (6).Thus, the rate of recovery containing gold and silver in golden slag can be significantly improved.
In some embodiments of the invention, in step (2), described is 1:(0.04 ~ 0.06 with sodium carbonate, borax, nitre, copper according to mass ratio containing golden solid impurity particle): (0.08 ~ 0.12): (0.01 ~ 0.03): (0.03 ~ 0.05) mixes.Thus, the rate of recovery containing gold and silver in golden slag can be improved further.
In some embodiments of the invention, described copper is from waste and old cable.Thus, significantly processing cost can be reduced.
In some embodiments of the invention, in step (3), described metallurgy carries out 15 ~ 20 minutes under 1400 ~ 1600 degrees Celsius.Thus, the rate of recovery containing gold and silver in golden slag can be improved further.
In some embodiments of the invention, described metallurgy is carried out in intermediate frequency furnace.Thus, the rate of recovery containing gold and silver in golden slag can be improved further.
In some embodiments of the invention, described metallurgy is carried out in carborundum graphite crucible in intermediate frequency furnace.Thus, the work-ing life of equipment can be significantly improved, thus reduce production cost.
In another aspect of the present invention, the present invention proposes the system of a kind of process containing golden slag, the described at least one containing containing in golden slag in gold and silver, copper and iron, described system comprises:
First shredder assembly, described first shredder assembly is suitable for carrying out the first break process by described containing golden slag, to obtain containing golden solid impurity particle;
Mixing device, described mixing device is connected with described first shredder assembly, and is suitable for mixing described with sodium carbonate, borax, nitre, copper, to obtain mixture containing golden solid impurity particle;
Smelting device, described smelting device is connected with described mixing device, and is suitable for described mixture to carry out metallurgy, to obtain metallurgical slag liquid;
Refrigerating unit, described refrigerating unit is connected with described smelting device, and is suitable for described metallurgical slag liquid being carried out cooling process, to obtain solid metallurgical slag; And second shredder assembly, described second shredder assembly is connected with described refrigerating unit, and is suitable for described solid metallurgical slag to carry out the second break process, to obtain tailings and alloy pig, wherein, containing Jin Heyin in described alloy pig.
The system containing golden slag according to the process of the embodiment of the present invention can significantly improve the rate of recovery improving gold and silver, and the grade of gold and silver is higher in gained alloy pig, operating environment is pollution-free simultaneously, thus can not work the mischief to operating personnel's health, and then significantly improves production safety coefficient.
In addition, process according to the above embodiment of the present invention can also have following additional technical characteristic containing the system of golden slag:
In some embodiments of the invention, described process comprises further containing the system of golden slag: transmitting device, described transmitting device is connected with described smelting device with described second refrigerating unit respectively, and is suitable for described tailings to be back to described smelting device.Thus, the rate of recovery containing gold and silver in golden slag can be significantly improved.
In some embodiments of the invention, described smelting device is intermediate frequency furnace, has carborundum graphite crucible in described intermediate frequency furnace.Thus, the rate of recovery containing gold and silver in golden slag can be improved further.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 processes the method flow schematic diagram containing golden slag according to an embodiment of the invention;
Fig. 2 is the method flow schematic diagram containing golden slag according to the process of another embodiment of the present invention;
Fig. 3 processes the system architecture schematic diagram containing golden slag according to an embodiment of the invention;
Fig. 4 is the system architecture schematic diagram containing golden slag according to the process of another embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In one aspect of the invention, the present invention proposes the method for a kind of process containing golden slag.According to embodiments of the invention, at least one in gold and silver, copper and iron can be contained containing golden slag.According to embodiments of the invention, method comprises: (1) carries out the first break process by described containing golden slag, to obtain containing golden solid impurity particle; (2) mix described with sodium carbonate, borax, nitre, copper, to obtain mixture containing golden solid impurity particle; (3) described mixture is carried out metallurgy, to obtain metallurgical slag liquid; (4) described metallurgical slag liquid is carried out cooling process, to obtain solid metallurgical slag; And described solid metallurgical slag is carried out the second break process by (5), to obtain tailings and alloy pig, wherein, Jin Heyin is contained in described alloy pig.Contriver finds, adopt copper as collecting agent, due to copper energy and gold, silver not only dissolves completely in the molten state and forms single liquid phase, and after liquid phase is solidified, still completely mutually dissolve and form single-phase solid solution alloy, therefore select copper as gold, the collecting agent of silver, can by gold most in metallurgical slag, silver is enriched in the copper liquid of melting, thus the rate of recovery of Jin Heyin can be significantly improved, and select sodium carbonate, borax and nitre carry out metallurgy as solubility promoter to containing golden slag, significantly can reduce proportion and the viscosity of slag, thus the alloying pellet containing gold and silver is constantly grown up, make fully to be separated with slag containing the alloying pellet containing gold and silver in golden slag, thus the rate of recovery of gold and silver can be improved further, simultaneously owing to being fully separated with slag containing the alloying pellet containing gold and silver in golden slag, gold and silver is made to be enriched in the bottom of metallurgical slag liquid, slag is enriched in the upper strata of metallurgical slag liquid, thus only need to carry out simple crushing just can realize being separated of tailings and alloy pig to metallurgical slag liquid cooling process being obtained solid metallurgical slag, and gold and silver grade is higher in gained alloy pig, the plumbous ensaying method of more traditional employing in addition, gravity separation method, amalgam process uses heavy metal to compare as collecting agent with in cyanide process technique, the present invention uses copper can not cause any pollution as the operation process of collecting agent, thus can not work the mischief to operating personnel's health, and then significantly improve production safety coefficient.
Below with reference to Fig. 1-2, the method for the process of the embodiment of the present invention containing golden slag is described in detail.According to embodiments of the invention, the method comprises:
S100: the first break process will be carried out containing golden slag
According to embodiments of the invention, the first break process will be carried out containing golden slag, thus can obtain containing golden solid impurity particle.Thus, can improve in subsequent process and fully contact with collecting agent containing the gold and silver in golden slag, thus significantly improve the rate of recovery of the Jin Heyin containing golden slag.
According to embodiments of the invention, at least one in gold and silver, copper and iron can be contained containing golden slag, concrete, can be smelting of gold slurry slag containing golden slag.According to embodiments of the invention, containing golden solid impurity particle particle diameter and be not particularly limited, those skilled in the art can select according to actual needs, and according to one embodiment of present invention, the median size containing golden solid impurity particle can be 0.3-0.5cm.Contriver finds, if particle diameter is too large, Fe alloy slag burn-off rate is excessively slow, affects power consumption, if and particle diameter is too small, intergranular gap is too small, easy conglomeration, caking, affect power consumption, and the waste gas that smelting process produces cannot be discharged in time, the situation easily causing material to spray suddenly occurs.According to embodiments of the invention, the concrete mode of the first break process is also not particularly limited, those skilled in the art can select according to actual needs, according to one embodiment of present invention, crusher or the mode of beating can be adopted to carry out break process to containing golden slag.
S200: mix with sodium carbonate, borax, nitre, copper containing golden solid impurity particle
According to embodiments of the invention, will mix with sodium carbonate, borax, nitre, copper containing golden solid impurity particle, thus can mixture be obtained.Thus, the rate of recovery of subsequent process containing gold and silver in golden slag can be significantly improved.
According to embodiments of the invention, copper can from waste and old cable.Thus, significantly processing cost can be reduced.According to embodiments of the invention, containing golden solid impurity particle and sodium carbonate, borax, nitre, copper blending ratio and be not particularly limited, those skilled in the art can select according to actual needs, according to one embodiment of present invention, be 1:(0.04 ~ 0.06 with sodium carbonate, borax, nitre, copper according to mass ratio containing golden solid impurity particle): (0.08 ~ 0.12): (0.01 ~ 0.03): (0.03 ~ 0.05) mixes.Contriver finds, in tailings, Gold Content can change along with the change of silicate degree, when silicate degree lower than 1 time, in tailings, Gold Content reduces along with the rising of silicate degree, when silicate degree is greater than 1, cause Gold Content in tailings can raise along with the rising of silicate degree, when therefore selecting silicate degree to be 1, in tailings, Gold Content is lower, and gold content is higher in gained alloy pig, selects the mixture of proportioning of the present invention thus, can ensure that the silicate degree of liquation is near 1, thus make slag viscosity lower, and then to make in follow-up gained alloy pig gold and silver content higher.
S300: mixture is carried out metallurgy
According to embodiments of the invention, mixture is carried out metallurgy, thus metallurgical slag liquid can be obtained.Thus, the thorough layering of gold and silver and slag can be realized, thus improve the rate of recovery containing gold and silver in golden slag further.
According to embodiments of the invention, metallurgy condition is also not particularly limited, and those skilled in the art can select according to actual needs, and according to one embodiment of present invention, metallurgy can carry out 15 ~ 20 minutes under 1400 ~ 1600 degrees Celsius.Contriver finds, under this smelting condition, gold and silver can thoroughly be separated with slag, thus improves the rate of recovery containing gold and silver in golden slag further.According to embodiments of the invention, the device of metallurgy is also not particularly limited, and those skilled in the art can select according to actual needs, and according to one embodiment of present invention, metallurgy can be carried out in intermediate frequency furnace.Thus, adopt intermediate frequency furnace to carry out metallurgy to mixture, due to intermediate frequency furnace have that rate of heating is fast, homogeneous heating and accuracy of temperature control high, thus the efficiency of mixture can be significantly improved, and then improve the rate of recovery containing gold and silver in golden slag.According to a particular embodiment of the invention, metallurgy can be carried out in the carborundum graphite crucible in intermediate frequency furnace.Thus, compared with traditional plumbago crucible, the carborundum graphite crucible that the present invention adopts has excellent flushing resistance, thus significantly improves the work-ing life of crucible, and then reduces equipment cost.It should be noted that, " intermediate frequency furnace " is herein any intermediate frequency furnace that can carry out metallurgy of the prior art.
S400: metallurgical slag liquid is carried out cooling process
According to embodiments of the invention, metallurgical slag liquid is carried out cooling process, thus solid metallurgical slag can be obtained.Concrete, treat that metallurgy completes, gained metallurgical slag liquid is poured out in mould, in mould, carries out naturally cooling.
S500: solid metallurgical slag is carried out the second break process
According to embodiments of the invention, solid metallurgical slag is carried out the second break process, thus tailings and alloy pig can be obtained, wherein, containing Jin Heyin in alloy pig.Thus, because gold and silver can thoroughly be separated with slag in smelting process, thus only need can realize being separated of alloy pig and tailings to solid metallurgical slag simple crushing, and in this alloy pig, the grade of gold and silver is higher.
The method containing golden slag according to the process of the embodiment of the present invention adopts copper as collecting agent, sodium carbonate, borax and nitre carry out metallurgy as solubility promoter to containing golden slag, significantly can reduce proportion and the viscosity of slag, thus the alloying pellet containing gold and silver is constantly grown up, make fully to be separated with slag containing the alloying pellet containing gold and silver in golden slag, thus the rate of recovery of Jin Heyin can be significantly improved, simultaneously owing to being fully separated with slag containing the alloying pellet containing gold and silver in golden slag, gold and silver is made to be enriched in the bottom of metallurgical slag liquid, slag is enriched in the upper strata of metallurgical slag liquid, thus only need to carry out simple crushing just can realize being separated of tailings and alloy pig to metallurgical slag liquid cooling process being obtained solid metallurgical slag, and gold and silver grade is higher in gained alloy pig, the plumbous ensaying method of more traditional employing in addition, gravity separation method, amalgam process uses heavy metal to compare as collecting agent with in cyanide process technique, the present invention uses copper can not cause any pollution as the operation process of collecting agent, thus can not work the mischief to operating personnel's health, and then significantly improve production safety coefficient.
With reference to figure 2, according to embodiments of the invention, process comprises further containing the method for golden slag:
S600: tailings is returned and carries out metallurgy
According to embodiments of the invention, tailings is returned step S300 and proceeds metallurgy.Thus, the rate of recovery containing gold and silver in golden slag can be significantly improved.
In second of the present invention, the present invention proposes the system of a kind of process containing golden slag.According to embodiments of the invention, at least one in gold and silver, copper and iron can be contained containing golden slag.According to embodiments of the invention, this system comprises: the first shredder assembly 100, mixing device 200, smelting device 300, refrigerating unit 400 and the second shredder assembly 500.
The system that process below with reference to Fig. 3-4 pairs of embodiment of the present invention contains golden slag is described in detail.According to embodiments of the invention, this system comprises:
First shredder assembly 100: according to embodiments of the invention, the first shredder assembly 100 is suitable for carrying out the first break process by containing golden slag, thus can obtain containing golden solid impurity particle.Thus, can improve in subsequent process and fully contact with collecting agent containing the gold and silver in golden slag, thus significantly improve the rate of recovery of the Jin Heyin containing golden slag.
According to embodiments of the invention, at least one in gold and silver, copper and iron can be contained containing golden slag, concrete, can be smelting of gold slurry slag containing golden slag.According to embodiments of the invention, containing golden solid impurity particle particle diameter and be not particularly limited, those skilled in the art can select according to actual needs, and according to one embodiment of present invention, the median size containing golden solid impurity particle can be 0.3-0.5cm.Contriver finds, if particle diameter is too large, Fe alloy slag burn-off rate is excessively slow, affects power consumption, if and particle diameter is too small, intergranular gap is too small, easy conglomeration, caking, affect power consumption, and the waste gas that smelting process produces cannot be discharged in time, the situation easily causing material to spray suddenly occurs.
Mixing device 200: according to embodiments of the invention, mixing device 200 is connected with the first shredder assembly 100, and is suitable for mixing containing golden solid impurity particle with sodium carbonate, borax, nitre, copper, thus can obtain mixture.Thus, the rate of recovery of subsequent process containing gold and silver in golden slag can be significantly improved.
According to embodiments of the invention, copper can from waste and old cable.Thus, significantly processing cost can be reduced.According to embodiments of the invention, containing golden solid impurity particle and sodium carbonate, borax, nitre, copper blending ratio and be not particularly limited, those skilled in the art can select according to actual needs, according to one embodiment of present invention, be 1:(0.04 ~ 0.06 with sodium carbonate, borax, nitre, copper according to mass ratio containing golden solid impurity particle): (0.08 ~ 0.12): (0.01 ~ 0.03): (0.03 ~ 0.05) mixes.Contriver finds, adopt copper as collecting agent, due to copper energy and gold, silver not only dissolves completely in the molten state and forms single liquid phase, and after liquid phase is solidified, still completely mutually dissolve and form single-phase solid solution alloy, therefore select copper as gold, the collecting agent of silver, can by gold most in metallurgical slag, silver is enriched in the copper liquid of melting, thus the rate of recovery of Jin Heyin can be significantly improved, and select sodium carbonate, borax and nitre carry out metallurgy as solubility promoter to containing golden slag, significantly can reduce proportion and the viscosity of slag, thus the alloying pellet containing gold and silver is constantly grown up, make fully to be separated with slag containing the alloying pellet containing gold and silver in golden slag, thus the rate of recovery of gold and silver can be improved further, and contriver is surprisingly found by great many of experiments, in tailings, Gold Content can change along with the change of silicate degree, when silicate degree lower than 1 time, in tailings, Gold Content reduces along with the rising of silicate degree, when silicate degree is greater than 1, cause Gold Content in tailings can raise along with the rising of silicate degree, when therefore selecting silicate degree to be 1, in tailings, Gold Content is lower, and gold content is higher in gained alloy pig, select the mixture of proportioning of the present invention thus, can ensure that the silicate degree of liquation is near 1, thus make slag viscosity lower, and then to make in follow-up gained alloy pig gold and silver content higher.
Smelting device 300: according to embodiments of the invention, smelting device 300 is connected with mixing device 200, and is suitable for mixture to carry out metallurgy, thus can obtain metallurgical slag liquid.Thus, the thorough layering of gold and silver and slag can be realized, thus improve the rate of recovery containing gold and silver in golden slag further.
According to embodiments of the invention, metallurgy condition is also not particularly limited, and those skilled in the art can select according to actual needs, and according to one embodiment of present invention, metallurgy can carry out 15 ~ 20 minutes under 1400 ~ 1600 degrees Celsius.Contriver finds, under this smelting condition, gold and silver can thoroughly be separated with slag, thus improves the rate of recovery containing gold and silver in golden slag further.According to embodiments of the invention, the particular type of smelting device is also not particularly limited, and those skilled in the art can select according to actual needs, and according to one embodiment of present invention, smelting device can be intermediate frequency furnace.Thus, adopt intermediate frequency furnace to carry out metallurgy to mixture, due to intermediate frequency furnace have that rate of heating is fast, homogeneous heating and accuracy of temperature control high, thus the efficiency of mixture can be significantly improved, and then improve the rate of recovery containing gold and silver in golden slag.According to a particular embodiment of the invention, smelting crucible in intermediate frequency furnace can be carborundum graphite crucible.Thus, compared with traditional plumbago crucible, the carborundum graphite crucible that the present invention adopts has excellent flushing resistance, thus significantly improves the work-ing life of crucible, and then reduces equipment cost.It should be noted that, " intermediate frequency furnace " is herein any intermediate frequency furnace that can carry out metallurgy of the prior art.
Refrigerating unit 400: according to embodiments of the invention, refrigerating unit 400 is connected with smelting device 300, and is suitable for metallurgical slag liquid to carry out cooling process, thus can obtain solid metallurgical slag.Concrete, treat that metallurgy completes, gained metallurgical slag liquid is poured out in mould, in mould, carries out naturally cooling.
Second shredder assembly 500: according to embodiments of the invention, the second shredder assembly 500 is connected with refrigerating unit 400, and is suitable for solid metallurgical slag to carry out the second break process, thus can obtain tailings and alloy pig, wherein, containing Jin Heyin in alloy pig.Thus, because gold and silver can thoroughly be separated with slag in smelting process, thus only need can realize being separated of alloy pig and tailings to solid metallurgical slag simple crushing, and in this alloy pig, the grade of gold and silver is higher.
The system containing golden slag according to the process of the embodiment of the present invention adopts copper as collecting agent, sodium carbonate, borax and nitre carry out metallurgy as solubility promoter to containing golden slag, significantly can reduce proportion and the viscosity of slag, thus the alloying pellet containing gold and silver is constantly grown up, make fully to be separated with slag containing the alloying pellet containing gold and silver in golden slag, thus the rate of recovery of Jin Heyin can be significantly improved, simultaneously owing to being fully separated with slag containing the alloying pellet containing gold and silver in golden slag, gold and silver is made to be enriched in the bottom of metallurgical slag liquid, slag is enriched in the upper strata of metallurgical slag liquid, thus only need to carry out simple crushing just can realize being separated of tailings and alloy pig to metallurgical slag liquid cooling process being obtained solid metallurgical slag, and gold and silver grade is higher in gained alloy pig, the plumbous ensaying method of more traditional employing in addition, gravity separation method, amalgam process uses heavy metal to compare as collecting agent with in cyanide process technique, the present invention uses copper can not cause any pollution as the operation process of collecting agent, thus can not work the mischief to operating personnel's health, and then significantly improve production safety coefficient.
With reference to figure 4, according to embodiments of the invention, process comprises further containing the system of golden slag:
Transmitting device 600: according to embodiments of the invention, transmitting device 600 is connected with smelting device 300 with the second refrigerating unit 500 respectively, and is suitable for that tailings is back to smelting device and proceeds metallurgy.Thus, the rate of recovery containing gold and silver in golden slag can be significantly improved.
Below with reference to specific embodiment, present invention is described, it should be noted that, these embodiments are only descriptive, and do not limit the present invention in any way.
Embodiment
The first break process will be carried out containing golden slag (composition is as shown in table 1), obtain containing golden solid impurity particle; To be that 1:0.05:0.1:0.02:0.04 mixes with sodium carbonate, borax, nitre, copper according to mass ratio containing golden solid impurity particle, obtain mixture; Mixture is carried out metallurgy 20 minutes in intermediate frequency furnace under 1500 degrees Celsius, obtains metallurgical slag liquid; Gained metallurgical slag liquid is poured in mould and carries out naturally cooling, obtain solid metallurgical slag; Then solid metallurgical slag is carried out the second break process, obtain tailings and alloy pig, in gained tailings, analytical data is as shown in table 1.
Comparative example
The first break process will be carried out containing golden slag, obtain containing golden solid impurity particle; To be that 1:0.05:0.1:0.02 mixes with sodium carbonate, borax, nitre according to mass ratio containing golden solid impurity particle, obtain mixture; Mixture is carried out metallurgy 20 minutes in intermediate frequency furnace under 1500 degrees Celsius, obtains metallurgical slag liquid; Gained metallurgical slag liquid is poured in mould and carries out naturally cooling, obtain solid metallurgical slag; Then solid metallurgical slag is carried out the second break process, obtain tailings and alloy pig, wherein, containing Jin Heyin in alloy pig, in gained tailings, analytical data is as shown in table 1.
Table 1
From table 1 data, process of the present invention is adopted to be starkly lower than comparative example containing gold and silver, copper and iron content in the method gained tailings of golden slag, and it is known by calculating you, the rate of recovery of gold is 98.27%, the rate of recovery of silver is 98.23%, in gained alloy pig, the grade of gold is 10 ~ 15%, and silver-colored grade is 25 ~ 30%, and copper grade is 25 ~ 30%.Show thus, adopt copper as collecting agent can significantly improve containing in golden slag gold and silver the rate of recovery, and in gained alloy pig gold and silver-colored grade higher.
In the description of this specification sheets, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification sheets or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (10)
1. process is containing a method for golden slag, the described at least one containing containing in golden slag in gold and silver, copper and iron, and it is characterized in that, described method comprises:
(1) the first break process is carried out described containing golden slag, to obtain containing golden solid impurity particle;
(2) mix described with sodium carbonate, borax, nitre, copper, to obtain mixture containing golden solid impurity particle;
(3) described mixture is carried out metallurgy, to obtain metallurgical slag liquid;
(4) described metallurgical slag liquid is carried out cooling process, to obtain solid metallurgical slag; And
(5) described solid metallurgical slag is carried out the second break process, to obtain tailings and alloy pig, wherein, containing Jin Heyin in described alloy pig.
2. method according to claim 1, is characterized in that, comprises further:
(6) described tailings is returned carry out described metallurgy.
3. method according to claim 1, it is characterized in that, in step (2), described is 1:(0.04 ~ 0.06 with sodium carbonate, borax, nitre, copper according to mass ratio containing golden solid impurity particle): (0.08 ~ 0.12): (0.01 ~ 0.03): (0.03 ~ 0.05) mixes.
4. method according to claim 3, is characterized in that, described copper is from waste and old cable.
5. method according to claim 1, is characterized in that, in step (3), described metallurgy carries out 15 ~ 20 minutes under 1400 ~ 1600 degrees Celsius.
6. method according to claim 5, is characterized in that, described metallurgy is carried out in intermediate frequency furnace.
7. method according to claim 6, is characterized in that, described metallurgy is carried out in the carborundum graphite crucible in intermediate frequency furnace.
8. process is containing a system for golden slag, the described at least one containing containing in golden slag in gold and silver, copper and iron, and it is characterized in that, described system comprises:
First shredder assembly, described first shredder assembly is suitable for carrying out the first break process by described containing golden slag, to obtain containing golden solid impurity particle;
Mixing device, described mixing device is connected with described first shredder assembly, and is suitable for mixing described with sodium carbonate, borax, nitre, copper, to obtain mixture containing golden solid impurity particle;
Smelting device, described smelting device is connected with described mixing device, and is suitable for described mixture to carry out metallurgy, to obtain metallurgical slag liquid;
Refrigerating unit, described refrigerating unit is connected with described smelting device, and is suitable for described metallurgical slag liquid being carried out cooling process, to obtain solid metallurgical slag; And
Second shredder assembly, described second shredder assembly is connected with described refrigerating unit, and is suitable for described solid metallurgical slag to carry out the second break process, to obtain tailings and alloy pig, wherein, containing Jin Heyin in described alloy pig.
9. system according to claim 8, is characterized in that, comprises further:
Transmitting device, described transmitting device is connected with described smelting device with described second refrigerating unit respectively, and is suitable for described tailings to be back to described smelting device.
10. system according to claim 9, is characterized in that, described smelting device is intermediate frequency furnace, has carborundum graphite crucible in described intermediate frequency furnace.
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