CN112844859A - Beneficiation process for high-carbon high-oxidation micro-fine-particle gold ore - Google Patents
Beneficiation process for high-carbon high-oxidation micro-fine-particle gold ore Download PDFInfo
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- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
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- B03D1/001—Flotation agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
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Abstract
The invention provides a beneficiation process of high-carbon high-oxidation micro-fine-particle gold ores, and relates to the technical field of ore beneficiation. Mixing raw ore with 1000 parts of sodium hydroxide and 2000 parts of sodium carbonate, and then crushing by using a ball mill to obtain ore pulp 1; carrying out classification treatment on the ore pulp 1, and returning coarse materials obtained by separation treatment to crushing treatment; stirring the fine materials obtained by separation treatment; after being uniformly stirred, the mixture is subjected to roughing treatment to obtain coarse tailings and coarse concentrate; carrying out fine concentration treatment on rough concentrate obtained by rough concentration; and carrying out scavenging treatment on the rough tailings obtained by roughing. The process has simple flow and low cost, improves the grade of the gold concentrate, and increases the recovery rate of ore dressing.
Description
Technical Field
The invention relates to the technical field of ore dressing, in particular to a mineral dressing process of high-carbon high-oxidation fine-particle gold ores.
Background
Gold is an extremely important strategic resource in the world, and is a hard currency in the world. Along with continuous development and utilization of gold, gold resources are gradually reduced, and the existing gold resources are often fine, barren or rich in impurities, so that the treatment difficulty of the existing gold resources is improved.
Disclosure of Invention
The invention aims to provide a beneficiation process for high-carbon high-oxidation fine-particle gold ores, which has the advantages of simple process flow and low cost, and can improve the grade of gold concentrate and the beneficiation recovery rate.
The embodiment of the invention is realized by the following steps:
the embodiment of the application provides a beneficiation process of high-carbon and high-oxidation fine-particle gold ores, which comprises the following steps:
s1: mixing raw ore with 1000 parts of sodium hydroxide and 2000 parts of sodium carbonate, pretreating by using a ball mill, and carrying out classification treatment to obtain ore pulp 1;
s2: adding composite higher alcohol, a dispersing agent and an activating agent into the ore pulp 1, and stirring to obtain ore pulp 2;
s3: adding a collecting agent into the ore pulp 2, and stirring to obtain flotation ore pulp;
s4: after being uniformly stirred, the mixture is subjected to roughing treatment to obtain coarse tailings and coarse concentrate;
s4-1: carrying out fine concentration treatment on rough concentrate obtained by rough concentration;
s4-2: and carrying out scavenging treatment on the rough tailings obtained by roughing.
In some embodiments of the present invention, the classification treatment includes spiral classification treatment, and after the ore pulp 1 is subjected to ball milling and ore discharge and enters the spiral classification treatment, the returned sand is returned to the ball mill for pretreatment again, so as to obtain the overflow fines 1.
In some embodiments of the invention, the classification treatment further comprises cyclone classification, the overflow fine material 1 enters cyclone classification treatment to obtain overflow fine material 2 and settled sand, and the settled sand enters a ball mill for pretreatment.
In some embodiments of the present invention, the agitation treatment includes a first-stage agitation treatment and a second-stage agitation treatment, and 70 parts of complex higher alcohol, 90 parts of sodium sulfide, 70 parts of copper sulfate, 800 parts of water glass, and 75 parts of pentylxanthate are added before the first-stage agitation treatment and the PH is adjusted to 9, and sufficiently agitated with the overflow fines 2 obtained from the classification treatment to obtain a pulp 3 and subjected to the second-stage agitation treatment.
In some embodiments of the invention, 160 parts of the compound xanthate is added before the second-stage stirring treatment, and is blended and stirred with the ore pulp 3 to obtain ore pulp 4.
In some embodiments of the invention, the rougher treatment employs flotation and obtains a coarse concentrate and a coarse tailings.
In some embodiments of the invention, the scavenging comprises a first stage scavenging, a second stage scavenging and a third stage scavenging; the scavenging comprises a first-stage scavenging, a second-stage scavenging and a third-stage scavenging; when the first-stage scavenging is carried out, 45 parts of amyl xanthate, 80 parts of compound xanthate, 30 parts of copper sulfate and 7 parts of compound higher alcohol are added to fully react with the coarse tailings, scavenged tailings 1 and scavenged concentrate 1 are obtained, the second-stage scavenging is carried out on the scavenged tailings 1, and the scavenged concentrate 1 is subjected to the coarse scavenging.
In some embodiments of the invention, 60 parts of composite xanthate, 10 parts of copper sulfate and 28 parts of composite higher alcohol are added during the second-stage scavenging and fully reacted with the scavenged tailings 1 to obtain scavenged tailings 2 and scavenged concentrate 2, the third-stage scavenging is performed on the scavenged tailings 2, and the first-stage scavenging is performed on the scavenged concentrate 2.
In some embodiments of the invention, 30 parts of composite xanthate and 15 parts of composite higher alcohol are added during the third-stage scavenging and fully react with the scavenged tailings 2 to obtain scavenged tailings 3 and scavenged concentrate 3, and the scavenged concentrate 3 is subjected to the second-stage scavenging.
In some embodiments of the invention, the concentration process is a multi-stage concentration process, the gold concentrate from each stage is directly subjected to the next stage of concentration process, and the mixture from each stage is returned to the previous stage for re-concentration.
Compared with the prior art, the embodiment of the invention has at least the following advantages or beneficial effects:
a mineral processing technology of high-carbon high-oxidation micro-fine gold ore comprises the following steps:
s1: mixing raw ore with 1000 parts of sodium hydroxide and 2000 parts of sodium carbonate, pretreating by using a ball mill, and carrying out classification treatment to obtain ore pulp 1;
s2: adding composite higher alcohol, a dispersing agent and an activating agent into the ore pulp 1, and stirring to obtain ore pulp 2;
s3: adding a collecting agent into the ore pulp 2, and stirring to obtain flotation ore pulp;
s4: after being uniformly stirred, the mixture is subjected to roughing treatment to obtain coarse tailings and coarse concentrate;
s4-1: carrying out fine concentration treatment on rough concentrate obtained by rough concentration;
s4-2: and carrying out scavenging treatment on the rough tailings obtained by roughing.
Based on the design idea of simplicity, feasibility and low cost, the design mainly aims at improving the additive and making a breakthrough. The influence of carbon is large in the beneficiation process, most of raw ores contain high-content organic carbon, and the organic carbon has strong gold adsorption capacity, so that the organic carbon can generate large resistance to the beneficiation of gold ores during the beneficiation treatment, and the organic carbon is also called as gold robbery in the field of the technology. Therefore, the design adopts the mode that the sodium hydroxide is added before the crushing treatment, so that the sodium hydroxide reacts with the organic carbon in the ore, and the product contains water or other organic matters dissolved in the water and is easy to separate from the gold ore, so that the subsequent process is more convenient and quicker. And because the content of the organic carbon in the gold ore is 0.3-0.35%, the content of the sodium hydroxide is set to be 1000 g/ton in order to ensure that the sodium hydroxide and the organic carbon fully react and avoid the condition of gold robbing caused by the residual organic carbon and the adsorption influence on medicaments. Meanwhile, in order to disperse the slime and activate the oxidized ore, the activating agent sodium carbonate with the content of 2000 g/ton is adopted in the embodiment, so that the adsorption capacity of the surface of the ore to the collecting agent can be fully enhanced, and the ore dressing efficiency is improved. The gold ore is crushed by using the cooperation of sodium hydroxide and sodium carbonate, and then is graded, so that particles in the gold ore are separated according to the size, and then the gold ore is stirred to enable the reaction to be more sufficient, and the gold ore concentrate and the recyclable metal minerals capable of meeting the requirements are respectively obtained through rough concentration, fine concentration and scavenging. According to the same chemical principle, the process in the design is also suitable for beneficiation of high-oxidation ores in the current beneficiation difficulty.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a block diagram of a process flow of beneficiation of high-carbon high-oxidation fine-grained gold ore according to the present invention.
FIG. 2 is a process flow diagram of the beneficiation process of high-carbon high-oxidation fine-particle gold ore
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to specific examples.
The features and properties of the present invention are described in further detail below with reference to examples. Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the individual features of the embodiments can be combined with one another without conflict.
Examples
As shown in fig. 1, the beneficiation process of the high-carbon high-oxidation fine-grained gold ore provided by the embodiment of the application includes the following steps:
s1: mixing raw ore with 1000 parts of sodium hydroxide and 2000 parts of sodium carbonate, pretreating by using a ball mill, and carrying out classification treatment to obtain ore pulp 1;
s2: adding composite higher alcohol, a dispersing agent and an activating agent into the ore pulp 1, and stirring to obtain ore pulp 2;
s3: adding a collecting agent into the ore pulp 2, and stirring to obtain flotation ore pulp;
s4: after being uniformly stirred, the mixture is subjected to roughing treatment to obtain coarse tailings and coarse concentrate;
s4-1: carrying out fine concentration treatment on rough concentrate obtained by rough concentration;
s4-2: and carrying out scavenging treatment on the rough tailings obtained by roughing.
In some embodiments of the present invention, the design is mainly targeted at improving additives and thus making breakthroughs, based on a simple, easy and low-cost design idea. The influence of carbon is large in the beneficiation process, most of raw ores contain high-content organic carbon, and the organic carbon has strong gold adsorption capacity, so that the organic carbon can generate large resistance to the beneficiation of gold ores during the beneficiation treatment, and the organic carbon is also called as gold robbery in the field of the technology. Therefore, the design adopts the mode that the sodium hydroxide is added before the crushing treatment, so that the sodium hydroxide reacts with the organic carbon in the ore, and the product contains water or other organic matters dissolved in the water and is easy to separate from the gold ore, so that the subsequent process is more convenient and quicker. And because the content of the organic carbon in the gold ore is 0.3-0.35%, the content of the sodium hydroxide is set to be 1000 g/ton in order to ensure that the sodium hydroxide and the organic carbon fully react and avoid the condition of gold robbing caused by the residual organic carbon and the adsorption influence on medicaments. Meanwhile, in order to disperse the slime and activate the oxidized ore, the activating agent sodium carbonate with the content of 2000 g/ton is adopted in the embodiment, so that the adsorption capacity of the surface of the ore to the collecting agent can be fully enhanced, and the ore dressing efficiency is improved. The gold ore is crushed by using the cooperation of sodium hydroxide and sodium carbonate, and then is graded, so that particles in the gold ore are separated according to the size, and then the gold ore is stirred to enable the reaction to be more sufficient, and the gold ore concentrate and the recyclable metal minerals capable of meeting the requirements are respectively obtained through rough concentration, fine concentration and scavenging.
In some embodiments of the present invention, after the ore pulp 1 is subjected to ball milling and ore discharge and enters spiral classification treatment, the return sand is returned to the ball mill for pretreatment again, and the overflow fines 1 are obtained.
In some embodiments of the present invention, the fineness of the ore is also an important factor influencing mineral separation, because the fineness of the ore determines the contact surface of the reaction between the ore and the additive, wherein the ore with smaller fineness reacts with the additive more fully and the reaction time is faster, so that under the comprehensive consideration of the cost, the present embodiment adopts a spiral classification treatment mode, and utilizes the principle that the specific gravity of solid particles is different and the sedimentation speed in liquid is different to perform mechanical classification, so that coarse materials with the particle size of more than 100 meshes are separated and returned to a crushing treatment for reprocessing, thereby ensuring the reutilization of resources, and fine materials with the particle size of less than or equal to 100 meshes are subjected to the next treatment.
In some embodiments of the invention, the classification treatment further comprises cyclone classification, the overflow fine material 1 enters cyclone classification treatment to obtain overflow fine material 2 and settled sand, and the settled sand enters a ball mill for pretreatment.
In some embodiments of the invention, in order to further reduce the fineness of the ore, the design adopts a cyclone classification processing mode and utilizes a centrifugal sedimentation principle to generate strong three-dimensional elliptical strong-rotation shearing turbulent flow motion after the fine material 1 to be separated enters the cyclone tangentially from the periphery of the cyclone under a certain pressure. Because the particle size difference exists between the coarse particles and the fine particles, the coarse particles and the fine particles are subjected to different sizes such as centrifugal force, centripetal buoyancy, fluid drag force and the like, and are subjected to centrifugal sedimentation, materials larger than 200 meshes are discharged through a sand settling nozzle of a cyclone, backflow is carried out on the materials for crushing, overflow fine materials 2 smaller than 200 meshes are discharged through an overflow pipe, and next-step treatment is carried out, so that the treatment of smaller fineness of ores is achieved, metal mineral monomers are separated, and the reaction efficiency is improved.
In some embodiments of the present invention, the agitation treatment includes a first-stage agitation treatment and a second-stage agitation treatment, and 70 parts of complex higher alcohol, 90 parts of sodium sulfide, 70 parts of copper sulfate, 800 parts of water glass, and 75 parts of pentylxanthate are added before the first-stage agitation treatment and the PH is adjusted to 9, and sufficiently agitated with the overflow fines 2 obtained from the classification treatment to obtain a pulp 3 and subjected to the second-stage agitation treatment.
In some embodiments of the invention, 160 parts of the compound xanthate is added before the second-stage stirring treatment, and is blended and stirred with the ore pulp 3 to obtain ore pulp 4.
In some embodiments of the invention, before the first-stage stirring treatment, since oxidized ore in the primary ore is often accompanied by a large amount of primary mud and secondary mud generated by crushing treatment with a ball mill, silicate particles of water glass are negatively charged, hydrated layers are arranged on the surfaces of the silicate particles, so that silicate colloidal particles can be stably dispersed and suspended in ore pulp without agglomeration and sedimentation, and when the colloidal particles are adsorbed on the surface of the ore pulp, the ore pulp is in a dispersed state. And because the amount of primary mud in the primary ore is large, in order to further enable the primary mud and the secondary mud to be fully dispersed, 800 g/ton of water glass is added, and the water glass is an inorganic colloid, has a dispersing effect on the mud, has a good inhibiting effect on gangue minerals such as quartz, silicate and the like, and further improves the ore dressing efficiency. And 70 g/ton copper sulfate and 90 g/ton sodium sulfide are added for activation, and the adsorption capacity of the mineral surface on the collecting agent is enhanced, so that the collecting agent is easy to adsorb. The method is used for eliminating the action of an inhibitor by changing the chemical composition of the surface of the mineral, and improving the mineral separation efficiency. In order to further enable the reaction to be fully performed, the second stirring treatment is carried out, and then the next step is carried out.
In some embodiments of the invention, the rougher treatment employs flotation and obtains a coarse concentrate and a coarse tailings.
In some embodiments of the invention, the reason for the flotation process is a beneficiation process that has wide application and good results in the separation of fine and very fine materials. Because the material has fine granularity and extremely small granularity and density effects, the gravity separation method is difficult to separate; while some minerals with little difference in magnetism or electric property are difficult to separate by magnetic separation or electric separation, but according to the difference of surface properties (namely according to the difference of action of the minerals with water, air bubbles and medicaments in water), useful minerals and useless gangue minerals can be separated by a flotation method with high efficiency through medicaments and mechanical adjustment. It can be used for treating non-ferrous minerals (such as copper, gold, lead, zinc, cobalt, tungsten, antimony ore, etc.), and non-metallic minerals (such as graphite, barite, fluorite, apatite, feldspar, talc, etc.). Ferrous metal minerals (such as hematite, manganese, titanium ore, etc.) can also be treated. Compared with other ore dressing methods, the separation efficiency of flotation is higher, and raw ore with very low grade can be separated into concentrate with high grade, so that the mineral resource range is expanded, and low-grade ore deposits which cannot be developed in the past are changed into ore deposits with industrial value; flotation is particularly effective in treating fine-grained impregnated ore, solving the problem of recovering useful components from many fine ore particles; thus improving the beneficiation efficiency.
In some embodiments of the invention, the scavenging comprises a first stage scavenging, a second stage scavenging and a third stage scavenging; when the first-stage scavenging is carried out, 45 parts of amyl xanthate, 80 parts of composite xanthate, 30 parts of copper sulfate and 20 parts of composite higher alcohol are added to fully react with the coarse tailings, scavenged tailings 1 and scavenged concentrate 1 are obtained, the second-stage scavenging is carried out on the scavenged tailings 1, and the scavenged concentrate 1 is subjected to the coarse scavenging.
In some embodiments of the invention, for the lack of the existing gold ore resources, in order to improve the utilization rate of the existing gold ore resources, the tailings generated after the roughing treatment are subjected to a first-stage scavenging treatment, so as to improve the recovery rate of gold ores or other useful metals, the specific implementation manner is that 45 g/ton of amyl xanthate, 80 g/ton of compound xanthate (abbreviated as MA-3), 30 g/ton of copper sulfate and 7 g/ton of compound higher alcohol (commonly referred to as 2# oil) are added during the first-stage scavenging, and the adsorption capacity of the mineral surface to the collecting agent is enhanced, so that the collecting agent is easy to adsorb. The method is used for eliminating the action of an inhibitor by changing the chemical composition of the surface of the mineral, and improving the recovery efficiency of the metal mineral.
In some embodiments of the invention, 60 parts of composite xanthate, 10 parts of copper sulfate and 28 parts of composite higher alcohol are added during the second-stage scavenging and fully reacted with the scavenged tailings 1 to obtain scavenged tailings 2 and scavenged concentrate 2, the third-stage scavenging is performed on the scavenged tailings 2, and the first-stage scavenging is performed on the scavenged concentrate 2.
In some embodiments of the invention, in order to further recover the scavenged tailings 1 after the first-stage scavenging treatment, 60 g/ton of composite xanthate (abbreviated as MA-3), 10 g/ton of copper sulfate and 28 g/ton of composite higher alcohol (commonly known as 2# oil) are added in the design, and the second-stage scavenging is performed on the scavenged tailings 2, so that the quality of the tailings recovered in the scavenging process is further enhanced, and the minerals which do not meet the requirements can be returned to the first-stage scavenging process for re-scavenging, so that the scavenging process is more thorough, and the waste of resources is avoided.
In some embodiments of the invention, 20 g/t of composite xanthate and 15 parts of composite higher alcohol are added during the third-stage scavenging and fully reacted with the scavenged tailings 2 to obtain scavenged tailings 3 and scavenged concentrate 3, and the scavenged concentrate 3 is subjected to the second-stage scavenging.
In some embodiments of the present invention, the tailings may be subjected to another scavenging, and with three scavenging, the tailings may reach a higher recovery rate when the cost allows, and the specific recovery rate is shown in table 1.
| Date | Recovery (%) | Raw ore grade (g/t) | Concentrate grade (g/t) |
| 19 years and 10 months | 70.96 | 2.74 | 36.17 |
| 19 years and 11 months | 72.13 | 2.74 | 32.50 |
| 19 years and 12 months | 79.72 | 2.76 | 31.71 |
| 20 years and 4 months | 78.91 | 3.02 | 30.61 |
| 20 years and 5 months | 80.16 | 2.97 | 30.22 |
| 20 years and 10 months | 82.29 | 3.06 | 32.61 |
| 20 years and 11 months | 83.06 | 2.77 | 30.66 |
TABLE 1
In some embodiments of the invention, the concentration process is a multi-stage concentration process, the gold concentrate from each stage is directly subjected to the next stage of concentration process, and the mixture from each stage is returned to the previous stage for re-concentration.
In some embodiments of the present invention, the concentration of gold ore requires multiple concentration, and this embodiment uses three concentrations, which aim to control the cost and concentration efficiency to the best effect in consideration of the cost and the efficiency decrease each time the concentration is performed, and the specific experimental data is shown in table 1.
In summary, the mineral processing technology for the high-carbon high-oxidation fine-particle gold ore provided by the embodiment of the application comprises the following steps:
s1: mixing raw ore with 1000 parts of sodium hydroxide and 2000 parts of sodium carbonate, pretreating by using a ball mill, and carrying out classification treatment to obtain ore pulp 1;
s2: adding composite higher alcohol, a dispersing agent and an activating agent into the ore pulp 1, and stirring to obtain ore pulp 2;
s3: adding a collecting agent into the ore pulp 2, and stirring to obtain flotation ore pulp;
s4: after being uniformly stirred, the mixture is subjected to roughing treatment to obtain coarse tailings and coarse concentrate;
s4-1: carrying out fine concentration treatment on rough concentrate obtained by rough concentration;
s4-2: and carrying out scavenging treatment on the rough tailings obtained by roughing.
Based on the design idea of simplicity, feasibility and low cost, the design mainly aims at improving the additive and making a breakthrough. The influence of carbon is large in the beneficiation process, most of raw ores contain high-content organic carbon, and the organic carbon has strong gold adsorption capacity, so that the organic carbon can generate large resistance to the beneficiation of gold ores during the beneficiation treatment, and the organic carbon is also called as gold robbery in the field of the technology. Therefore, the design adopts the mode that the sodium hydroxide is added before the crushing treatment, so that the sodium hydroxide reacts with the organic carbon in the ore, and the product contains water or other organic matters dissolved in the water and is easy to separate from the gold ore, so that the subsequent process is more convenient and quicker. And because the content of the organic carbon in the gold ore is 0.3-0.35%, the content of the sodium hydroxide is set to be 1000 g/ton in order to ensure that the sodium hydroxide and the organic carbon fully react and avoid the condition of gold robbing caused by the residual organic carbon and the adsorption influence on medicaments. Meanwhile, in order to disperse the slime and activate the oxidized ore, the activating agent sodium carbonate with the content of 2000 g/ton is adopted in the embodiment, so that the adsorption capacity of the surface of the ore to the collecting agent can be fully enhanced, and the ore dressing efficiency is improved. The gold ore is crushed by using the cooperation of sodium hydroxide and sodium carbonate, and then is graded, so that particles in the gold ore are separated according to the size, and then the gold ore is stirred to enable the reaction to be more sufficient, and the gold ore concentrate and the recyclable metal minerals capable of meeting the requirements are respectively obtained through rough concentration, fine concentration and scavenging.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. A mineral processing technology of high-carbon high-oxidation micro-fine gold ore is characterized by comprising the following steps:
s1: mixing raw ore with 1000 parts of sodium hydroxide and 2000 parts of sodium carbonate, pretreating by using a ball mill, and carrying out classification treatment to obtain ore pulp 1;
s2: adding composite higher alcohol, a dispersing agent and an activating agent into the ore pulp 1, and stirring to obtain ore pulp 2;
s3: adding a collecting agent into the ore pulp 2, and stirring to obtain flotation ore pulp;
s4: after being uniformly stirred, the mixture is subjected to roughing treatment to obtain coarse tailings and coarse concentrate;
s4-1: carrying out fine concentration treatment on rough concentrate obtained by rough concentration;
s4-2: and carrying out scavenging treatment on the rough tailings obtained by roughing.
2. The beneficiation process of high-carbon high-oxidation fine gold ore according to claim 1, wherein the classification treatment comprises spiral classification treatment, and after ball milling and ore discharge of the ore pulp 1 enter the spiral classification treatment, return sand returns to ball milling for pretreatment again to obtain overflow fines 1.
3. The beneficiation process of high-carbon high-oxidation fine-grained gold ore according to claim 2, wherein the grading treatment further comprises cyclone grading, the overflow fine material 1 enters the cyclone grading treatment to obtain overflow fine material 2 and settled sand, and the settled sand enters a ball mill for pretreatment.
4. The mineral processing technology of the high-carbon high-oxidation fine gold ore according to claim 3, wherein the stirring treatment comprises a first-stage stirring treatment and a second-stage stirring treatment, 70 parts of complex higher alcohol, 90 parts of sodium sulfide, 70 parts of copper sulfate, 800 parts of water glass and 75 parts of amyl xanthate are added before the first-stage stirring treatment, the pH value is adjusted to 9, and the mixture is fully stirred with overflow fine material 2 obtained by the classification treatment to obtain ore pulp 3 and the second-stage stirring treatment is carried out.
5. The beneficiation process of high-carbon high-oxidation fine gold ore according to claim 4, wherein 160 parts of composite xanthate is added before the second-stage stirring treatment, and is mixed and stirred with the ore pulp 3 to obtain ore pulp 4.
6. The beneficiation process of high-carbon high-oxidation fine-particle gold ore according to claim 5, wherein the roughing treatment is performed by a flotation method, and a rough concentrate and a rough tailings are obtained.
7. The beneficiation process for high-carbon high-oxidation fine gold ore according to claim 6, wherein the scavenging treatment comprises a first stage scavenging, a second stage scavenging and a third stage scavenging; and adding 45 parts of amyl xanthate, 80 parts of compound xanthate, 30 parts of copper sulfate and 7 parts of compound higher alcohol to fully react with the coarse tailings during the primary scavenging, then obtaining scavenged tailings 1 and scavenged concentrate 1, performing the secondary scavenging on the scavenged tailings 1, and performing the coarse scavenging on the scavenged concentrate 1.
8. The beneficiation process for the high-carbon high-oxidation fine gold ore according to claim 7, wherein 60 parts of composite xanthate, 10 parts of copper sulfate and 28 parts of composite higher alcohol are added during the second-stage scavenging and fully react with scavenged tailings 1 to obtain scavenged tailings 2 and scavenged concentrate 2, the third-stage scavenging is performed on the scavenged tailings 2, and the first-stage scavenging is performed on the scavenged concentrate 2.
9. The beneficiation process for high-carbon high-oxidation fine gold ore according to claim 8, wherein 30 parts of composite xanthate and 15 parts of composite higher alcohol are added during the third-stage scavenging and fully react with scavenged tailings 2 to obtain scavenged tailings 3 and scavenged concentrate 3, and the scavenged concentrate 3 is subjected to the second-stage scavenging.
10. The beneficiation process of high-carbon high-oxidation fine-grained gold ore according to claim 6, wherein the concentration treatment is a multi-stage concentration treatment, gold concentrate from each stage of concentration is directly subjected to the next stage of concentration treatment, and the mixture from each stage of concentration is returned to the previous stage for re-concentration.
Priority Applications (1)
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| CN113333180A (en) * | 2021-06-18 | 2021-09-03 | 核工业北京化工冶金研究院 | Flotation method for ore containing altered rock |
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| CN102127653A (en) * | 2010-11-29 | 2011-07-20 | 长春黄金研究院 | Process for extracting gold by modified pressure oxidation-cyaniding |
| CN104511373A (en) * | 2013-09-26 | 2015-04-15 | 沈阳有色金属研究院 | Mineral separation method for high-oxidative molybdenum ore |
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