阅读说明：本技术 一种提高铜矿石铜及伴生金回收率的活化剂及制备和应用 (Activating agent for improving recovery rate of copper and associated gold in copper ore, and preparation and application thereof ) 是由 田树国 王乾坤 孙忠梅 胡敏 崔立凤 丛颖 周利华 唐浪峰 缪彦 李继福 于 2021-08-11 设计创作，主要内容包括：本发明公开了一种提高铜矿石铜及伴生金回收率的活化剂及制备和应用,活化剂的原料按照如下重量百分比包括十二烷基磺酸钠10％-40％、柠檬酸钠20％-50％、巯基苯并噻唑钠20％-50％。本发明开发一种选择性活化效果好、适应性强、绿色环保、对提高铜矿石铜及伴生金回收率有明显作用的活化剂。(The invention discloses an activator for improving recovery rates of copper and associated gold in copper ores, and preparation and application thereof, wherein the raw materials of the activator comprise 10-40% of sodium dodecyl sulfate, 20-50% of sodium citrate and 20-50% of sodium mercaptobenzothiazole according to the following weight percentage. The activating agent has the advantages of good selective activation effect, strong adaptability, environmental protection and obvious effect of improving the recovery rate of copper in copper ores and associated gold.)

1. The activating agent for improving the recovery rate of copper and associated gold in copper ore is characterized in that the raw materials comprise 10-40% of sodium dodecyl sulfate, 20-50% of sodium citrate and 20-50% of sodium mercaptobenzothiazole according to the following weight percentage.

2. A method for preparing the activator for improving the recovery rate of copper and associated gold from copper ore according to claim 1, comprising the steps of:

s1, weighing the raw materials according to the weight percentage, and uniformly mixing the raw materials;

s2, placing the mixed material obtained in the step S1 into a conical flask, plugging the flask opening with a bottle plug, placing the conical flask into a constant-temperature vibration table, adjusting the temperature of the constant-temperature vibration table to be 40-60 ℃, the rotation speed to be 150 plus 200 rpm, the amplitude to be 5-20 mm, and vibrating for 2-3 hours under the constant temperature condition to obtain the activating agent.

3. Use of the activator of claim 1 for increasing the recovery of copper from copper ore and associated gold.

4. The application of claim 3, wherein the specific process is as follows:

(1) grinding: crushing raw ore, mixing with water, and grinding;

(2) carrying out copper-gold-sulfur mixing and roughing operation: adding the ground minerals into a single-groove flotation machine, adding a sulfide collecting agent, namely amyl xanthate, stirring, adding foaming agent, namely pine oil, stirring, and then carrying out first copper-gold-sulfur mixed roughing operation, wherein the concentrate obtained by the first copper-gold-sulfur mixed roughing operation is first copper-gold-sulfur mixed roughing concentrate, and the tailings obtained by the first copper-gold-sulfur mixed roughing operation enter second copper-gold-sulfur mixed roughing operation;

(3) and (2) carrying out copper-gold-sulfur mixing and roughing operation: adding the activating agent into a tailing flotation tank obtained by the first copper-gold-sulfur mixed roughing operation, adding a sulfide collecting agent, namely amyl xanthate after stirring, adding a foaming agent, namely pinitol oil after stirring, performing second copper-gold-sulfur mixed roughing operation after stirring, obtaining a concentrate obtained by the second copper-gold-sulfur mixed roughing operation, namely a second copper-gold-sulfur mixed rough concentrate, and enabling tailings obtained by the second copper-gold-sulfur mixed roughing operation to enter a third copper-gold-sulfur mixed roughing operation;

(4) three operations of copper, gold and sulfur mixing and roughing: adding an activating agent into a tailing flotation tank obtained by the second copper-gold-sulfur mixed roughing operation, adding a sulfide collecting agent, namely amyl xanthate after stirring, adding a foaming agent, namely pine oil after stirring, and performing third copper-gold-sulfur mixed roughing operation after stirring, wherein a concentrate obtained by the third copper-gold-sulfur mixed roughing operation is a third copper-gold-sulfur mixed rough concentrate, and a tailing obtained by the third copper-gold-sulfur mixed roughing operation is a first tailing;

(5) regrinding the copper-gold-sulfur mixed rough concentrate: combining the copper-gold-sulfur mixed rough concentrate I, the copper-gold-sulfur mixed rough concentrate II and the copper-gold-sulfur mixed rough concentrate III, clarifying, extracting excessive water, adding lime for fine grinding, and performing copper-gold-sulfur separation and copper-gold roughing operation;

(6) copper-gold-sulfur separation copper-gold roughing operation: adding the finely ground copper-gold-sulfur mixed rough concentrate into a single-tank flotation machine, adding lime, adjusting the pH value of ore pulp to 11.5-12.0, adding the activating agent after stirring, adding Z-200 after stirring, adding a foaming agent terpineol oil after stirring, performing copper-gold-sulfur separation copper-gold roughing operation after stirring, wherein the concentrate obtained in the copper-gold-sulfur separation copper-gold roughing operation is the copper-gold rough concentrate, performing copper-gold fine concentration one operation, and performing copper-gold-sulfur separation copper-gold roughing operation on the obtained tailings;

(7) copper-gold-sulfur separation copper-gold scavenging operation: adding the activating agent into tailings obtained in the copper-gold-sulfur separation copper-gold roughing operation, adding a collecting agent Z-200 after stirring, adding a foaming agent terpineol oil after stirring, performing copper-gold-sulfur separation copper-gold scavenging after stirring, returning concentrate obtained in the copper-gold-sulfur separation copper-gold roughing operation to the copper-gold-sulfur separation copper-gold roughing operation, and allowing the tailings obtained in the copper-gold-sulfur separation copper-gold scavenging operation to enter a copper-gold-sulfur separation copper-gold scavenging operation;

(8) copper-gold-sulfur separation and copper-gold scavenging operation: adding the activating agent into tailings obtained in the first copper-gold-sulfur separation copper-gold scavenging operation, adding a collecting agent Z-200 after stirring, adding a foaming agent terpineol after stirring, performing second copper-gold-sulfur separation copper-gold scavenging operation after stirring, returning concentrate obtained in the second copper-gold-sulfur separation copper-gold scavenging operation, and allowing tailings obtained in the second copper-gold-sulfur separation copper-gold scavenging operation to enter third copper-gold-sulfur separation copper-gold scavenging operation;

(9) copper-gold-sulfur separation and copper-gold scavenging three operations: adding the activating agent into tailings obtained by the second copper-gold-sulfur separation and copper-gold scavenging operation, adding a collecting agent Z-200 after stirring, adding a foaming agent terpineol after stirring, performing third copper-gold-sulfur separation and copper-gold scavenging after stirring, returning concentrate obtained by the third copper-gold-sulfur separation and copper-gold scavenging operation to the second copper-gold-sulfur separation and copper-gold scavenging operation, and obtaining tailings which are second tailings after the third copper-gold-sulfur separation and copper-gold scavenging operation;

(10) copper and gold fine selection operation: adding the copper-gold rough concentrate into a hanging-groove flotation machine, adding lime, stirring, and then carrying out copper-gold fine concentration operation, wherein the concentrate obtained in the copper-gold fine concentration operation enters a copper-gold fine concentration operation, and tailings obtained in the copper-gold fine concentration operation return to a copper-gold-sulfur separation copper-gold rough concentration operation;

(11) and (2) copper and gold fine selection: adding the concentrate obtained in the first copper-gold concentration operation into a hanging groove flotation machine, adding lime, stirring, and then carrying out second copper-gold concentration operation to obtain a foam product, namely the copper-gold concentrate, and returning tailings to the first copper-gold concentration operation.

Technical Field

The invention belongs to the technical field of mineral processing, and particularly relates to an activating agent for improving recovery rates of copper and associated gold in copper ore, preparation and application thereof, which are suitable for comprehensively recovering associated copper and gold ore in which the associated gold is mainly monomer gold and continuous gold.

Background

The average gold content in the crust is about 1.1 parts per billion, and gold deposits are formed by enriching gold elements through long-term crust movement and geological changes. The grade of gold in general gold ore with industrial value is 2-3 g/ton, the grade of gold in rich ore is 5-50 g/ton, the grade of gold in super-rich ore is 50-500 g/ton, the grade of gold in lean ore is 0.1-1 g/ton, and the current concentration technology level is more than 0.5 g/ton, so that the gold has industrial exploitation value. Gold has thiophilic property, and is often closely symbiotic with sulfide to form associated gold ore. Along with the development of mineral resources, single ore and rich ore are nearly exhausted; the mineral separation utilization of poor impurity and fine and associated ore resources is increasingly important. The copper and gold resources also face the problems that single and easily-treated copper ores and gold ores are gradually reduced, and copper, gold and sulfur associated ores with complex embedding relations become one of the main raw materials for the comprehensive recovery of copper (gold) at present. The comprehensive recovery of the gold-bearing copper-sulfur ore is mainly carried out by a flotation method, and the traditional separation process is mainly carried out by a priority flotation process and a mixed flotation and re-separation process. However, the conventional preferential flotation process or the mixed flotation and separation process is adopted, and the copper ore of the type is sorted in a strong-pressure and strong-pressure or strong-pressure and strong-pressure mode, so that the medicament consumption is generally high, the mineral separation index is poor, particularly the recovery rate of gold is low, and the comprehensive utilization rate of resources is low. Therefore, the copper-gold flotation activating agent with good selective activation effect and strong adaptability is developed and matched with a reasonable mineral processing process flow, and the recovery rate of copper and associated gold is improved.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide an activating agent for improving the recovery rate of copper ore and associated gold, and preparation and application thereof, and develops an activating agent which has good selective activation effect, strong adaptability, environmental protection and obvious effect on improving the recovery rate of copper ore and associated gold.

In order to achieve the purpose, the invention adopts the following technical scheme:

an activating agent for improving the recovery rate of copper and associated gold in copper ore comprises, by weight, 10% -40% of sodium dodecyl sulfate, 20% -50% of sodium citrate and 20% -50% of sodium mercaptobenzothiazole.

The invention also provides a preparation method of the activating agent for improving the recovery rate of copper and associated gold in copper ores, which comprises the following steps:

s1, weighing the raw materials according to the weight percentage, and uniformly mixing the raw materials;

s2, placing the mixed material obtained in the step S1 into a conical flask, plugging the flask opening with a bottle plug, placing the conical flask into a constant-temperature vibration table, adjusting the temperature of the constant-temperature vibration table to be 40-60 ℃, the rotation speed to be 150 plus 200 rpm, the amplitude to be 5-20 mm, and vibrating for 2-3 hours under the constant temperature condition to obtain the activating agent.

The invention also provides application of the activating agent in improving the recovery rate of copper in copper ores and associated gold.

Further, the specific process of the application is as follows:

(1) grinding: crushing raw ore, mixing with water, and grinding;

(2) carrying out copper-gold-sulfur mixing and roughing operation: adding the ground minerals into a single-groove flotation machine, adding a sulfide collecting agent, namely amyl xanthate, stirring, adding foaming agent, namely pine oil, stirring, and then carrying out first copper-gold-sulfur mixed roughing operation, wherein the concentrate obtained by the first copper-gold-sulfur mixed roughing operation is first copper-gold-sulfur mixed roughing concentrate, and the tailings obtained by the first copper-gold-sulfur mixed roughing operation enter second copper-gold-sulfur mixed roughing operation;

(3) and (2) carrying out copper-gold-sulfur mixing and roughing operation: adding the activating agent into a tailing flotation tank obtained by the first copper-gold-sulfur mixed roughing operation, adding a sulfide collecting agent, namely amyl xanthate after stirring, adding a foaming agent, namely pinitol oil after stirring, performing second copper-gold-sulfur mixed roughing operation after stirring, obtaining a concentrate obtained by the second copper-gold-sulfur mixed roughing operation, namely a second copper-gold-sulfur mixed rough concentrate, and enabling tailings obtained by the second copper-gold-sulfur mixed roughing operation to enter a third copper-gold-sulfur mixed roughing operation;

(4) three operations of copper, gold and sulfur mixing and roughing: adding an activating agent into a tailing flotation tank obtained by the second copper-gold-sulfur mixed roughing operation, adding a sulfide collecting agent, namely amyl xanthate after stirring, adding a foaming agent, namely pine oil after stirring, and performing third copper-gold-sulfur mixed roughing operation after stirring, wherein a concentrate obtained by the third copper-gold-sulfur mixed roughing operation is a third copper-gold-sulfur mixed rough concentrate, and a tailing obtained by the third copper-gold-sulfur mixed roughing operation is a first tailing;

(5) regrinding the copper-gold-sulfur mixed rough concentrate: combining the copper-gold-sulfur mixed rough concentrate I, the copper-gold-sulfur mixed rough concentrate II and the copper-gold-sulfur mixed rough concentrate III, clarifying, extracting excessive water, adding lime for fine grinding, and performing copper-gold-sulfur separation and copper-gold roughing operation;

(6) copper-gold-sulfur separation copper-gold roughing operation: adding the finely ground copper-gold-sulfur mixed rough concentrate into a single-tank flotation machine, adding lime, adjusting the pH value of ore pulp to 11.5-12.0, adding the activating agent after stirring, adding Z-200 after stirring, adding a foaming agent terpineol oil after stirring, performing copper-gold-sulfur separation copper-gold roughing operation after stirring, wherein the concentrate obtained in the copper-gold-sulfur separation copper-gold roughing operation is the copper-gold rough concentrate, performing copper-gold fine concentration one operation, and performing copper-gold-sulfur separation copper-gold roughing operation on the obtained tailings;

(7) copper-gold-sulfur separation copper-gold scavenging operation: adding the activating agent into tailings obtained in the copper-gold-sulfur separation copper-gold roughing operation, adding a collecting agent Z-200 after stirring, adding a foaming agent terpineol oil after stirring, performing copper-gold-sulfur separation copper-gold scavenging after stirring, returning concentrate obtained in the copper-gold-sulfur separation copper-gold roughing operation to the copper-gold-sulfur separation copper-gold roughing operation, and allowing the tailings obtained in the copper-gold-sulfur separation copper-gold scavenging operation to enter a copper-gold-sulfur separation copper-gold scavenging operation;

(8) copper-gold-sulfur separation and copper-gold scavenging operation: adding the activating agent into tailings obtained in the first copper-gold-sulfur separation copper-gold scavenging operation, adding a collecting agent Z-200 after stirring, adding a foaming agent terpineol after stirring, performing second copper-gold-sulfur separation copper-gold scavenging operation after stirring, returning concentrate obtained in the second copper-gold-sulfur separation copper-gold scavenging operation, and allowing tailings obtained in the second copper-gold-sulfur separation copper-gold scavenging operation to enter third copper-gold-sulfur separation copper-gold scavenging operation;

(9) copper-gold-sulfur separation and copper-gold scavenging three operations: adding the activating agent into tailings obtained by the second copper-gold-sulfur separation and copper-gold scavenging operation, adding a collecting agent Z-200 after stirring, adding a foaming agent terpineol after stirring, performing third copper-gold-sulfur separation and copper-gold scavenging after stirring, returning concentrate obtained by the third copper-gold-sulfur separation and copper-gold scavenging operation to the second copper-gold-sulfur separation and copper-gold scavenging operation, and obtaining tailings which are second tailings after the third copper-gold-sulfur separation and copper-gold scavenging operation;

(10) copper and gold fine selection operation: adding the copper-gold rough concentrate into a hanging-groove flotation machine, adding lime, stirring, and then carrying out copper-gold fine concentration operation, wherein the concentrate obtained in the copper-gold fine concentration operation enters a copper-gold fine concentration operation, and tailings obtained in the copper-gold fine concentration operation return to a copper-gold-sulfur separation copper-gold rough concentration operation;

(11) and (2) copper and gold fine selection: adding the concentrate obtained in the first copper-gold concentration operation into a hanging groove flotation machine, adding lime, stirring, and then carrying out second copper-gold concentration operation to obtain a foam product, namely the copper-gold concentrate, and returning tailings to the first copper-gold concentration operation.

The invention has the beneficial effects that:

(1) the activating agent for improving the recovery rate of copper and associated gold in the copper ore has a simple preparation process, and the raw materials of sodium dodecyl sulfate, sodium citrate and sodium mercaptobenzothiazole are all chemical raw materials which are easily purchased in the market, so that the raw materials are low in price and wide in source.

(2) The activating agent for improving the recovery rate of copper and associated gold in the copper ore can react with the surface of the gold and copper mineral to generate a water transfer film in the using process, so that the hydrophobicity of the gold and copper mineral is enhanced, and the selective activation effect is further achieved. The sodium dodecyl sulfate, the sodium citrate and the sodium mercaptobenzothiazole are mutually cooperated to activate the gold and the copper, so that the dosage of the traditional Chinese medicine in practical application is small, the activation effect on the gold and the copper and the gold is good, especially the activation effect on the gold is good, and the comprehensive recovery index of the copper and the gold is good.

Drawings

FIG. 1 is a schematic flow chart of example 6 of the present invention;

FIG. 2 is a process flow diagram of examples 7-11 of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, and it should be noted that the present embodiment is based on the technical solution, and the detailed implementation and the specific operation process are provided, but the protection scope of the present invention is not limited to the present embodiment.

Example 1

The present embodiment provides an activator for increasing recovery rates of copper and associated gold in copper ore, wherein the raw materials include, by weight, 10% of sodium dodecyl sulfate, 40% of sodium citrate, and 50% of sodium mercaptobenzothiazole.

Example 2

The present embodiment provides an activator for increasing recovery rates of copper and associated gold in copper ore, wherein the raw materials include, by weight, 10% of sodium dodecyl sulfate, 50% of sodium citrate, and 40% of sodium mercaptobenzothiazole.

Example 3

The present embodiment provides an activator for increasing recovery rates of copper and associated gold from copper ore, wherein the raw materials include, by weight, 40% of sodium dodecyl sulfate, 20% of sodium citrate, and 40% of sodium mercaptobenzothiazole.

Example 4

The present embodiment provides an activator for increasing recovery rates of copper and associated gold from copper ore, wherein the raw materials include, by weight, 40% of sodium dodecyl sulfate, 40% of sodium citrate, and 20% of sodium mercaptobenzothiazole.

Example 5

The present embodiment provides an activator for increasing recovery rates of copper and associated gold in copper ore, wherein the raw materials include, by weight, 20% of sodium dodecyl sulfate, 30% of sodium citrate, and 50% of sodium mercaptobenzothiazole.

Example 6

This example provides a method for preparing an activator for improving the recovery rate of copper and associated gold from copper ore as described in example 1, and as shown in fig. 1, the method includes the following steps:

s1, weighing the raw materials according to the weight percentage, placing the raw materials on a 40 cm-by-40 cm square soft rubber pad, and mixing the raw materials uniformly by adopting a rolling mixing method (the rolling mixing method is to hold opposite corners of the square soft rubber pad by two hands, draw the opposite corners of the rubber pad together as much as possible to form a certain angle, carrying the opposite corners of the rubber pad by the two hands to move back and forth so that the materials roll on the rubber pad, changing the other opposite corner after rolling for 6-9 times to repeat material rolling motion for 6-9 times, performing reciprocating exchange rolling for 8-10 times in the way, and mixing the materials uniformly in the rolling process).

S2, placing the mixed material obtained in the step S1 into a conical flask, plugging the flask opening with a bottle plug, placing the conical flask into a constant-temperature vibration shaking table, adjusting the temperature of the constant-temperature vibration shaking table to be 40-60 ℃, the rotating speed to be 150-200 rpm and the amplitude to be 5-20 mm, and shaking the conical flask for 2-3 hours under the constant temperature condition to obtain the activating agent (hereinafter referred to as TC 1910).

In FIG. 1, a is sodium dodecyl sulfate, b is sodium citrate, c is sodium mercaptobenzothiazole, and E is TC 1910.

Example 7

Copper minerals in a certain gold-containing copper sulfide ore are mainly chalcopyrite, contain a small amount of chalcocite, copper blue and a very small amount of bornite; the gold mainly comprises monomer gold, continuous gold and copper sulfide mineral gold, and then pyrite gold, and gangue mineral gold is less; the gangue minerals are mainly quartz, and sericite and aluminosilicate minerals are secondarily.

The activating agent (hereinafter referred to as TC1910) for improving the recovery rate of copper and associated gold of the copper ore in the embodiment 1-5 is adopted to carry out beneficiation process tests on raw ores of different ore sections of the ore area, the original production process flow and the type of the agent are unchanged, and the use of the activating agent TC1910 is added on the basis of the original process.

In the present example, raw ore containing 0.87% copper and 0.37g/t gold;

as shown in figure 2, raw ore is crushed to 2mm and mixed with water according to the weight ratio of 1:1 for grinding until the fineness of the product is-0.075 mm and accounts for 60%. Adding the ground minerals into a single-groove flotation machine, adding a sulfide mineral collecting agent amyl xanthate with the dosage of 40g/t of dry weight of the raw ore, stirring for 2 minutes, adding a foaming agent pinitol oil with the dosage of 10g/t of dry weight of the raw ore, stirring for 1 minute, and then carrying out copper-gold-sulfur mixed roughing on the mixture, wherein the concentrate (foam product) is the first copper-gold-sulfur mixed roughing concentrate, and the tailings enter the second copper-gold-sulfur mixed roughing. Adding an activating agent TC1910 described in example 1 into copper-gold-sulfur mixed roughing tailings, stirring for 3 minutes, adding a sulfide collecting agent amyl xanthate, stirring for 20g/t of the dry weight of the raw ore, stirring for 2 minutes, adding a foaming agent terpineol, stirring for 5g/t of the dry weight of the raw ore, performing copper-gold-sulfur mixed roughing II after stirring for 1 minute, wherein a concentrate (a foam product) is copper-gold-sulfur mixed rough concentrate II, and enabling the tailings to enter a copper-gold-sulfur mixed roughing III. Adding the activator TC1910 described in example 1 into the second tailings of the mixed rough concentration of copper, gold and sulfur, wherein the dosage of the activator TC1910 is 100g/t of dry weight of raw ore, stirring for 3 minutes, adding a sulfide collecting agent amyl xanthate, the dosage of the amyl xanthate is 15g/t of dry weight of the raw ore, stirring for 2 minutes, adding a foaming agent terpineol oil, the dosage of the foaming agent terpineol oil is 5g/t of dry weight of the raw ore, stirring for 1 minute, performing third mixed rough concentration of copper, gold and sulfur, wherein the concentrate (foam product) is a third mixed rough concentrate of copper, gold and sulfur, and the tailings are the first tailings. And combining the first copper gold sulfur mixed rough concentrate, the second copper gold sulfur mixed rough concentrate and the third copper gold sulfur mixed rough concentrate, clarifying, extracting excessive water by using a aurilave, adding the mixture into an Aisha mill, adding lime into the Aisha mill until the dosage is 2500g/t of the dry weight of the raw ore, finely grinding until the product fineness is minus 0.020mm and the content accounts for 80%, and performing a copper gold and sulfur separation process. Adding finely ground copper-gold-sulfur mixed rough concentrate into a single-tank flotation machine, adding lime with the dosage of 1500g/t of dry weight of raw ore, adjusting the pH value of ore pulp to 11.80, stirring for 3 minutes, adding TC1910 described in example 1 with the dosage of 200g/t of dry weight of raw ore, stirring for 2 minutes, adding Z-200 with the dosage of 20g/t of dry weight of raw ore, stirring for 2 minutes, adding foaming agent terpineol oil with the dosage of 10g/t of dry weight of raw ore, stirring for 1 minute, performing copper-gold-sulfur separation and copper-gold rough separation, wherein the concentrate (foam product) is copper-gold rough concentrate, performing copper-gold fine separation operation, and performing copper-gold-sulfur separation and copper-gold scavenging operation on tailings. Copper-gold-sulfur separation copper-gold roughing tailings are added with TC1910 described in example 1, the using amount of the TC1910 is 500g/t of the dry weight of raw ore, collecting agent Z-200 is added after stirring for 2 minutes, the using amount of the collecting agent Z-200 is 15g/t of the dry weight of raw ore, foaming agent terpineol oil is added after stirring for 2 minutes, the using amount of the foaming agent pine oil is 5g/t of the dry weight of raw ore, copper-gold-sulfur separation copper-gold scavenging is performed after stirring for 1 minute, concentrate (foam product) returns to copper-gold-sulfur separation copper-gold roughing, and tailings enter copper-gold-sulfur separation copper-gold scavenging. Copper-gold-sulfur separation copper-gold scavenging first tailings are added with TC1910 described in example 1, the dosage of the TC1910 is 100g/t of dry weight of raw ore, a collecting agent Z-200 is added after stirring for 2 minutes, the dosage of the collecting agent Z-200 is 10g/t of dry weight of raw ore, a foaming agent terpineol oil is added after stirring for 2 minutes, the dosage of the foaming agent Z-200 is 3g/t of dry weight of raw ore, copper-gold-sulfur separation copper-gold scavenging second is carried out after stirring for 1 minute, concentrate (foam product) returns to copper-gold-sulfur separation copper-gold scavenging first, and tailings enter copper-gold-sulfur separation copper-gold scavenging third. Copper-gold-sulfur separation copper-gold scavenging second tailings are added with TC1910 described in example 1, the dosage of the TC1910 is 50g/t of dry weight of raw ore, a collecting agent Z-200 is added after stirring for 2 minutes, the dosage of the collecting agent Z-200 is 10g/t of dry weight of raw ore, a foaming agent terpineol oil is added after stirring for 2 minutes, the dosage of the foaming agent terpineol oil is 3g/t of dry weight of raw ore, copper-gold-sulfur separation copper-gold scavenging third is carried out after stirring for 1 minute, concentrate (foam product) returns to copper-gold-sulfur separation copper-gold scavenging second, and tailings are tailings second. Adding the copper-gold rough concentrate into a hanging-groove flotation machine, adding lime with the dosage of 300g/t of dry weight of raw ore, stirring for three minutes, carrying out first copper-gold concentration operation, enabling the concentrate (foam product) to enter second copper-gold concentration operation, and enabling tailings to return to copper-gold-sulfur separation and copper-gold rough concentration. Adding the first copper-gold concentration concentrate into a hanging-groove flotation machine, adding lime with the dosage of 200g/t of dry weight of raw ore, stirring for three minutes, and then carrying out second copper-gold concentration operation to obtain a foam product, namely the copper-gold concentrate, and returning tailings to the first copper-gold concentration operation.

In fig. 2, d is raw ore, e is amyl xanthate, f is pine oil, g is lime, h is TC1910, i is Z-200, K is copper gold concentrate, X1 is first tailings, and X2 is second tailings.

Example 8

The raw ore used in this example contained 0.88% copper and 0.36g/t gold, and the copper-gold concentrate contained 24.16% copper and 8.34g/t gold, with a copper recovery of 93.64% and a gold recovery of 79.49%. This example is identical to example 7 in the flotation process, except that TC1910 as described in example 2 is used in this example.

Example 9

The raw ore used in this example contained 0.87% copper and 0.37g/t gold, and the copper-gold concentrate contained 21.68% copper and 7.97g/t gold, with a copper recovery of 94.11% and a gold recovery of 81.77%. This example is identical to example 7 in the flotation process, except that TC1910 as described in example 3 is used in this example.

Example 10

The raw ore used in this example contained 0.89% copper and 0.35g/t gold, and copper-gold concentrate contained 23.86% copper and 7.84g/t gold, with a copper recovery of 94.13% and a gold recovery of 80.11%. This example is identical to example 7 in the flotation process, except that the TC1910 described in example 4 is used in this example.

Example 11

The raw ore used in this example contained 0.88% copper and 0.35g/t gold, and copper-gold concentrate contained 23.03% copper and 7.92g/t gold, with a copper recovery of 93.96% and a gold recovery of 77.52%. This example is identical to example 7 in the flotation process, except that the TC1910 described in example 5 was used in this example.

The specific process experimental criteria of examples 7-11 are shown in Table 1.

TABLE 1

Comparative example 1

The raw ore used in the comparative example contains 0.87% of copper, 0.32% of gold and 2.08% of sulfur. Flotation was carried out using the original production process, i.e. the process of examples 7-11, to remove the use of activator TC 1910. The indexes of the closed circuit test of the original production process are shown in the table 2.

TABLE 2 closed-loop test indexes of original production process

As can be seen from tables 1 and 2, the mixed process method of "copper-gold-sulfur mixed flotation-copper-gold-sulfur mixed flotation coarse concentrate fine grinding-fine grinding product flotation copper gold" is applied by using the activating agent TC1910 described in examples 1 to 5, and compared with the original production process, the mixed process method can effectively improve the copper-gold grade and the recovery rate index, and particularly greatly improve the gold recovery rate, and has stable ore dressing index, good selective activation effect, and better application prospect.

Various corresponding changes and modifications can be made by those skilled in the art based on the above technical solutions and concepts, and all such changes and modifications should be included in the protection scope of the present invention.