Sorting method for marmatite-containing copper-zinc sulfide ore

Abstract

The invention relates to the technical field of copper-zinc sulfide ores, in particular to a marmatite-containing copper-zinc sulfide ore separation method which comprises the following steps: S1, early-stage preparation: S1-1, ore pulp preparation: carrying out crushing and ore grinding treatment on copper-zinc ore raw ores, and enabling ore grinding fineness to be-0.074 mm accounting for 65-75%; s2, flotation is conducted, wherein in the step S2, flotation operation is conducted on prepared ore pulp, and the flotation concentration is 25%-35%; s2-2, a defoaming device is adopted for defoaming treatment, and foam is crushed and discharged; and S3, copper, zinc, sulfur and the like are floatable. According to the method, high copper, zinc and sulfur recovery rates can be obtained for the marmatite-containing copper-zinc sulfide ore, the comprehensive recovery effect is ideal, efficient separation of copper, zinc, sulfur and other minerals is achieved through one-section roughing, one-section scavenging and copper-zinc bulk flotation including roughing, fine scavenging, fine selection, sulfur flotation and other multi-section flotation processes, and the flotation efficiency is improved. By means of the multi-section flotation mode, the purity of minerals can be gradually improved.

Description

Technical Field

[0001] The present invention relates to the technical field of copper-zinc sulfide ore, and particularly to a separation method for copper-zinc sulfide ore containing marmatite. Background Art

[0002] Copper-zinc sulfide ore is an ore containing copper and zinc sulfides and is an important raw material for extracting copper and zinc. Copper-zinc sulfide ore is mainly composed of sulfide minerals such as chalcopyrite and sphalerite. In addition, it may also contain other sulfide minerals such as pyrite and pyrrhotite, as well as non-metallic minerals such as quartz and calcite. The content and distribution state of these minerals in the ore vary depending on the ore type and origin.

[0003] The properties of copper-zinc sulfide ore are complex, mainly manifested in the following aspects: complex mineral composition, fine dissemination size, and large difference in floatability.

[0004] In view of the properties of copper-zinc sulfide ore, the commonly used separation methods mainly include flotation, gravity separation, magnetic separation, etc. Among them, flotation is the main and most effective method. The basic principle of flotation is to utilize the differences in the physicochemical properties of the mineral surfaces and, by adjusting the pH value of the pulp and using reagents such as collectors and inhibitors, to effectively separate the valuable minerals from gangue minerals or other minerals.

[0005] However, in the process of suppressing sulfur in copper-zinc sulfide ore containing marmatite, marmatite is easily suppressed and enriched in pyrite together with sulfur, resulting in a low zinc recovery rate and a high zinc grade in the sulfur concentrate, causing waste of zinc resources. Therefore, the efficient recovery of copper, zinc, and sulfur from copper-zinc sulfide ore containing marmatite is an important problem faced by concentrators.

[0006] Therefore, it is urgent to improve the separation of copper-zinc sulfide ore to solve the above existing problems. Summary of the Invention

[0007] The purpose of the present invention is to provide a separation method for copper-zinc sulfide ore containing marmatite, which can obtain high recovery rates of copper, zinc, and sulfur for copper-zinc sulfide ore containing marmatite, and the comprehensive recovery effect is ideal.

[0008] To achieve the above purpose, the main technical solutions adopted by the present invention include: A separation method for copper-zinc sulfide ore containing marmatite, comprising the following steps:

[0009] S1. Preliminary Preparation

[0010] S1-1: Pulp Preparation: The original copper-zinc ore is subjected to crushing and grinding treatment, and the grinding fineness is -0.074mm accounting for 65%-75%;

[0011] S2. Flotation

[0012] S2-1: Conduct flotation operation on the prepared pulp with a flotation concentration of 25%-35%;

[0013] S2-2: Use a defoaming device for defoaming treatment to break and discharge the foam;

[0014] S3. Float copper, zinc, sulfur, etc. Among them, the flotation operation is divided into one-stage roughing and one-stage scavenging;

[0015] S3-1: Roughing: Add inhibitors, activators, collectors, and frothers in the roughing section of flotation. The inhibitors are lime 1000-3000 g / t, sodium sulfite 1000-3000 g / t, calcium hypochlorite 200-400 g / t. The added activator copper sulfate is 100-200 g / t, the dosage of copper-zinc collector is 40-80 g / t, the frother is 20-40 g / t, and the flotation time is 4-8 min;

[0016] S3-2: Scavenging: Add the same types of activators, collectors, and frothers as in roughing to the pulp after roughing for one-stage scavenging. The dosage of the activator added in scavenging is 40-80 g / t, the dosage of the collector is 20-40 g / t, the dosage of the frother is 10-20 g / t, and the flotation time is 3-6 min;

[0017] S4. Copper-zinc bulk flotation - suppress sulfur - sulfur flotation. Among them, the flotation operation is divided into one-stage copper-zinc bulk roughing, three-stage copper-zinc cleaning scavenging, four-stage copper-zinc cleaning, and sulfur cleaning operations;

[0018] S4-1: Copper-zinc bulk roughing: Add inhibitors, activators, and collectors in the roughing section of copper-zinc bulk flotation. The inhibitors are lime 1000-3000 g / t, sodium sulfite 1000-3000 g / t, calcium hypochlorite 200-400 g / t. The added activator copper sulfate is 40-80 g / t, the dosage of copper-zinc collector is 10-40 g / t, and the flotation time is 3-6 min;

[0019] S4-2: Copper-zinc cleaning scavenging: Add the same types of activators and collectors as in roughing to the pulp after roughing for three-stage cleaning scavenging. The dosage of the activator added in cleaning scavenging is 10-30 g / t, the dosage of the collector is 10-20 g / t, and the flotation time is 2-4 min;

[0020] S4-3: Copper-zinc bulk concentrate cleaning: Add the same types of inhibitors, activators, and collectors as in the roughing stage to the concentrate pulp for four-stage cleaning. In the first and second stages of cleaning, the dosage of lime as inhibitor is 1000 - 3000 g / t, sodium sulfite is 1000 - 3000 g / t, calcium hypochlorite is 200 - 400 g / t, the dosage of copper sulfate as activator is 40 - 80 g / t, the dosage of copper-zinc collector is 10 - 40 g / t, and the flotation time is 2 - 4 min; In the third stage of cleaning, the dosage of lime as inhibitor is 500 - 1500 g / t, sodium sulfite is 500 - 1500 g / t, calcium hypochlorite is 100 - 200 g / t, the dosage of copper sulfate as activator is 20 - 40 g / t, the dosage of copper-zinc collector is 10 - 20 g / t, and the flotation time is 2 - 4 min; In the fourth stage of cleaning, the dosage of lime as inhibitor is 300 - 800 g / t, sodium sulfite is 300 - 800 g / t, calcium hypochlorite is 50 - 200 g / t, the dosage of copper sulfate as activator is 20 - 40 g / t, the dosage of copper-zinc collector is 10 - 40 g / t, and the flotation time is 1 - 3 min;

[0021] S4-4: The pulp after copper-zinc bulk scavenging is subjected to sulfur flotation. The flotation consists of one-stage roughing and two-stage cleaning. The dosage of copper sulfate as activator is 100 - 200 g / t, the dosage of sulfur collector is 100 - 200 g / t, and the flotation time is 3 - 6 min; Sulfur cleaning is blank cleaning without adding flotation reagents, and the flotation time is 2 - 4 min;

[0022] S5. Sulfur flotation of the floatable tailings of copper, zinc, sulfur, etc. Among them, the flotation operation is divided into one-stage sulfur roughing, one-stage sulfur scavenging, and two-stage sulfur cleaning;

[0023] S5-1: Sulfur roughing: Add 100 - 300 g / t of copper sulfate as activator and 100 - 200 g / t of sulfur collector in the sulfur roughing stage, and the flotation time is 3 - 6 min;

[0024] S5-2: Sulfur scavenging: Add the same types of activator and collector as in the roughing stage to the pulp after sulfur roughing for one-stage scavenging. The dosage of activator added in scavenging is 50 - 150 g / t, the dosage of sulfur collector is 50 - 100 g / t, and the flotation time is 2 - 4 min;

[0025] S5-3: Sulfur cleaning: Sulfur cleaning is blank cleaning without adding flotation reagents, and the flotation time is 2 - 4 min.

[0026] Preferably, the inhibitor is a combined inhibitor of lime, sodium sulfite, and calcium hypochlorite, and the copper-zinc flotation collector is isopropyl ethyl thionocarbamate.

[0027] Preferably, the sulfur flotation collector is amyl xanthate, butyl xanthate, and higher xanthate.

[0028] Preferably, the defoaming device is composed of a mounting table, a transmission assembly, a defoaming structure, and a driving mechanism. The transmission assembly includes a transmission sleeve and a transmission shaft connected by splines. The transmission sleeve is installed on the mounting table by bearings, and the bottom end of the transmission shaft penetrates the inside of the transmission sleeve.

[0029] Preferably, an installation frame is bolted to the outer surface of the bottom end of the transmission shaft, and the defoaming structure is detachably installed in the installation frame;

[0030] The defoaming structure includes a sliding seat detachably installed in the installation frame, a connecting rod fixed inside the sliding seat, and a conduction plate fixed to the bottom end of the connecting rod. A vibrator is fixed to the outer surface of the conduction plate, and a plurality of filter holes are formed inside the conduction plate. The number of defoaming structures is six, the number of installation frames is two, and the six defoaming structures are evenly distributed in the installation frame in groups of three.

[0031] Preferably, the driving mechanism includes a double-shaft motor fixed inside the mounting table, transmission gears fixed on two output shafts of the double-shaft motor, and a driven gear fixed on the outer surface of the transmission sleeve. The driven gear meshes with the bottom transmission gear.

[0032] Preferably, a cleaning structure for cleaning the filter holes is fixedly installed on the outer surface of the conduction plate. The cleaning structure includes a frame, a cross plate fixed inside the frame, a through member detachably installed on the cross plate, and a resistance member installed on one side of the frame;

[0033] The through member includes a sleeve, mounting rods fixed on the left and right sides of the sleeve, and a through pipe. The mounting rods penetrate the inside of the frame, and a locking ring that abuts against the outer surface of the cross plate is threadedly installed on the outer surface of the mounting rods. A buffer pad is fixed on the outer surface of the sleeve near one end of the through pipe.

[0034] Preferably, the resistance member includes a mounting block fixed on one side of the frame, an adjusting rod threadedly installed inside the mounting block, and a resistance block fixed to the other end of the adjusting rod. The resistance block is provided with a first resistance surface and a second resistance surface;

[0035] A reset structure is arranged between the conduction plate and the mounting block. The reset structure includes a guide rod fixed on the outer surface of the conduction plate and an abutting ring fixed on the outer surface of one end of the guide rod. The guide rod penetrates the inside of the mounting block, and a reset spring surrounding the outer portion of the guide rod is fixed between the abutting ring and the mounting block.

[0036] Preferably, a lifting structure for cooperating with the driving mechanism is provided on the upper surface of the mounting table. The lifting structure includes a rotating cylinder bearing-mounted on the upper surface of the mounting table, a linkage gear fixed to the outer surface of the bottom end of the rotating cylinder and meshing with the top transmission gear, and a connecting member provided at the top end of the transmission shaft. The connecting member includes a mounting sleeve rotatably mounted on the outer surface of the top end of the transmission shaft, a connecting rod fixed to the outer surface of the mounting sleeve, and a slider rotatably mounted at the other end of the connecting rod. An inclined chute is formed on the outer surface of the rotating cylinder, and the slider is slidably connected to the inclined chute;

[0037] A guiding structure for limiting the transmission shaft is provided on the upper surface of the mounting table, and a limiting structure for limiting the defoaming structure is further provided on the lower surface of the mounting table.

[0038] Preferably, the limiting structure includes a circular table fixed to the lower surface of the mounting table. A limiting chute is formed inside the circular table, and a limiting block is slidably connected inside the limiting chute. A connecting rod penetrating through the inside of the limiting block is fixed to the upper surface of the mounting frame; A locking mechanism for limiting the transmission shaft is provided on the upper surface of the circular table. The locking mechanism includes a cylinder base fixed to the upper surface of the circular table, a telescopic electric cylinder fixed inside the cylinder base, and a ball rotatably mounted on the output end of the telescopic electric cylinder. An annular chute is formed inside the transmission shaft, and the ball is in rolling connection with the annular chute.

[0039] The present invention has at least the following beneficial effects:

[0040] 1. For the copper-zinc sulfide ore containing iron sphalerite, the present invention can obtain relatively high recovery rates of copper, zinc, and sulfur, and the comprehensive recovery effect is ideal. Through one-stage roughing, one-stage scavenging, and copper-zinc bulk flotation, including multiple flotation processes such as roughing, fine scavenging, cleaning, and sulfur flotation, the efficient separation of minerals such as copper, zinc, and sulfur is achieved. This multi-stage flotation method can gradually improve the purity of minerals and finally obtain high-grade copper, zinc, and sulfur concentrates.

[0041] 2. At different flotation stages, the present invention realizes the refined control of the flotation process by adjusting the types and dosages of inhibitors, activators, collectors, and frothers, as well as the flotation time. This refined control helps to maximize the recovery of useful minerals while reducing the mixing of impurities.

[0042] 3. By optimizing the types and dosages of reagents, the present invention reduces the consumption of reagents. In the cleaning stage of copper-zinc bulk flotation, the dosages of inhibitors and collectors are gradually reduced, which not only ensures the flotation effect but also reduces the reagent cost. The use of a defoaming device for defoaming treatment can effectively reduce the generation and accumulation of foam, thereby reducing the dosage of frother.

[0043] 4. In the present invention, through the design of the cleaning structure, the through member can periodically clean the filter holes under the action of the resistance member and the reset structure, which avoids the influence of the defoaming effect caused by foam residue or impurity blockage in the filter holes and ensures the continuous and efficient operation of the defoaming device.

[0044] 3. In the present invention, through the design of the lifting structure, the transmission shaft and the defoaming structure thereon can be adjusted up and down according to actual needs. Through the rotation of the rotating cylinder, the linkage gear meshes with the top transmission gear, driving the connecting member to slide along the inclined chute, thereby realizing the lifting of the transmission shaft. This adjustment ability enables the defoaming structure to be more accurately positioned in the foam layer, improving the pertinence and quality of defoaming. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The drawings described herein are used to provide a further understanding of the present application, form a part of the present application, and the schematic embodiments and descriptions thereof are used to explain the present application, and do not constitute an improper limitation of the present application. In the drawings:

[0046] Figure 1 is the process flow diagram of the sulfide copper-zinc ore beneficiation of iron-bearing sphalerite of the present invention;

[0047] Figure 2 is the process flow diagram of the copper-zinc bulk flotation and sulfur depression beneficiation of sulfide copper-zinc ore of the present invention;

[0048] Figure 3 is the overall structure schematic diagram of the defoaming device of the present invention;

[0049] Figure 4 is the sectional view of the mounting table in the present invention;

[0050] Figure 5 is the structure schematic diagram of the driving mechanism in the present invention;

[0051] Figure 6 is the structure schematic diagram after the defoaming structure is installed in the present invention;

[0052] Figure 7 is the structure schematic diagram of the defoaming structure in the present invention;

[0053] Figure 8 is the structure schematic diagram of the filter hole in the present invention;

[0054] Figure 9 is the present invention Figure 5 The enlarged structure schematic diagram of A shown;

[0055] Figure 10 is the structure schematic diagram of the cleaning structure in the present invention;

[0056] Figure 11 is the structure schematic diagram of the through member in the present invention;

[0057] Figure 12 For the present invention Figure 10 Schematic enlarged structure diagram of B shown

[0058] Figure 13 Schematic structure diagram of the limiting structure and the locking mechanism in the present invention

[0059] In the figure, 1, mounting table; 2, transmission assembly; 201, transmission sleeve; 202, transmission shaft; 3, mounting frame; 4, defoaming structure; 41, sliding seat; 42, connecting rod; 43, conduction plate; 44, vibrator; 45, filter hole; 5, cleaning structure; 51, frame; 52, cross plate; 53, through member; 531, sleeve; 532, mounting rod; 533, locking ring; 534, through pipe; 535, buffer pad; 54, resistance member; 541, mounting block; 542, adjusting rod; 543, resistance block; 5431, first resistance surface; 5432, second resistance surface; 544, guide rod; 545, abutting ring; 546, return spring; 6, driving mechanism; 61, double-shaft motor; 62, driving gear; 63, driven gear; 7, lifting structure; 71, rotating cylinder; 72, linkage gear; 73, inclined chute; 74, mounting sleeve; 75, connecting rod; 75, slider; 8, limiting structure; 81, circular table; 82, limiting chute; 83, limiting block; 84, connecting rod; 85, limiting ring; 86, through hole; 9, guiding structure; 10, locking mechanism; 1001, cylinder seat; 1002, telescopic electric cylinder; 1003, ball Specific embodiments

[0060] The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments

[0061] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention

[0062] Embodiment 1

[0063] As Figure 1 shown, the method for separating copper-zinc sulfide ore containing marmatite provided in this embodiment includes the following steps

[0064] S1. Preliminary preparation

[0065] S1-1: Pulp preparation: The original copper-zinc ore is crushed and ground, and the grinding fineness of -0.074mm accounts for 75%; the copper grade in the copper-zinc sulfide ore is 0.57%, the zinc grade is 3.08%, and the sulfur grade is 16.17%

[0066] S2. Flotation

[0067] S2-1: Conduct flotation operation on the prepared pulp with a flotation concentration of 35%.

[0068] S2-2: Use a defoaming device for defoaming treatment to break and discharge the foam.

[0069] S3. Floatability of copper, zinc, sulfur, etc. Among them, the flotation operation is divided into one-stage roughing and one-stage scavenging.

[0070] S3-1: Roughing: Add inhibitor, activator, collector, and frother in the roughing stage of flotation. The inhibitor is lime 2000 g / t, sodium sulfite 2000 g / t, calcium hypochlorite 400 g / t. The activator copper sulfate is 100 g / t, the copper-zinc collector isopropyl ethyl thionocarbamate dosage is 80 g / t, and the frother No. 2 oil is 30 g / t. The flotation time is 8 min.

[0071] S3-2: Scavenging: Add the same types of activator, collector, and frother as in roughing to the pulp after roughing for one-stage scavenging. The dosage of the activator added in scavenging is 60 g / t, the dosage of the collector isopropyl ethyl thionocarbamate is 30 g / t, the dosage of the frother is 10 g / t, and the flotation time is 5 min.

[0072] S4. Copper-zinc bulk flotation - sulfur inhibition - sulfur flotation. Among them, the flotation operation is divided into one-stage copper-zinc bulk roughing, three-stage copper-zinc fine scavenging, four-stage copper-zinc cleaning, and sulfur cleaning operations.

[0073] S4-1: The inhibitor is lime 2000 g / t, sodium sulfite 2000 g / t, calcium hypochlorite 400 g / t. The added activator copper sulfate is 60 g / t, and the dosage of the copper-zinc collector isopropyl ethyl thionocarbamate is 30 g / t. The flotation time is 4 min.

[0074] S4-2: Copper-zinc fine scavenging: Add the same types of activator and collector as in roughing to the pulp after roughing for three-stage fine scavenging. The dosage of the activator added in fine scavenging is 30 g / t, and the dosage of the collector isopropyl ethyl thionocarbamate is 15 g / t. The flotation time is 3 min.

[0075] S4-3: Copper-zinc bulk concentrate cleaning: Add the same types of inhibitors, activators, and collectors as in the roughing stage to the concentrated pulp for four-stage cleaning. For the first and second stages of cleaning, the dosage of lime as inhibitor is 2000 g / t, sodium sulfite is 2000 g / t, calcium hypochlorite is 400 g / t, the dosage of copper sulfate as activator is 60 g / t, and the dosage of isopropyl ethyl thionocarbamate as copper-zinc collector is 30 g / t, with a flotation time of 4 min; for the third stage of cleaning, the dosage of lime as inhibitor is 1000 g / t, sodium sulfite is 1000 g / t, calcium hypochlorite is 200 g / t, the dosage of copper sulfate as activator is 30 g / t, and the dosage of isopropyl ethyl thionocarbamate as copper-zinc collector is 15 g / t, with a flotation time of 3 min; for the fourth stage of cleaning, the dosage of lime as inhibitor is 500 g / t, sodium sulfite is 500 g / t, calcium hypochlorite is 100 g / t, the dosage of copper sulfate as activator is 20 g / t, and the dosage of isopropyl ethyl thionocarbamate as copper-zinc collector is 10 g / t, with a flotation time of 2 min;

[0076] S4-4: The pulp after copper-zinc bulk concentrate scavenging is subjected to sulfur flotation. The flotation consists of one-stage roughing and two-stage cleaning. The dosage of copper sulfate as activator is 200 g / t, the dosage of sulfur collector is 200 g / t, and the flotation time is 5 min; sulfur cleaning is blank cleaning without adding flotation reagents, and the flotation time is 5 min;

[0077] S5. Sulfur flotation of the floatable tailings of copper, zinc, sulfur, etc. Among them, the flotation operation is divided into one-stage sulfur roughing, one-stage sulfur scavenging, and two-stage sulfur cleaning;

[0078] S5-1: Sulfur roughing: Add 200 g / t of copper sulfate as activator and 200 g / t of butyl xanthate as sulfur collector in the sulfur roughing stage, with a flotation time of 5 min;

[0079] S5-2: Sulfur scavenging: Add the same types of activator and collector as in the roughing stage to the pulp after sulfur roughing for one-stage scavenging. The dosage of activator added in scavenging is 100 g / t, and the dosage of butyl xanthate as sulfur collector is 60 g / t, with a flotation time of 3 min;

[0080] S5-3: Sulfur cleaning: Sulfur cleaning is blank cleaning without adding flotation reagents, and the flotation time is 3 min.

[0081] It should be noted that the copper-zinc flotation collector is isopropyl ethyl thionocarbamate; the sulfur flotation collectors are amyl xanthate, butyl xanthate, higher xanthate or any combination thereof; the flotation frothers include, but are not limited to: No. 2 oil, MIBC, etc.

[0082] Test N1: Using the process flow and reagent system of this patent, the copper recovery rate of the copper-zinc bulk concentrate is 91.22%, the zinc recovery rate is 96.13%, and the sulfur recovery rate is 72.57%.

[0083]

[0084] Example 2:

[0085] As Figure 2 shown, the separation method of copper-zinc sulfide ore containing marmatite provided in this embodiment includes the following steps:

[0086] S1. Preliminary preparation

[0087] S1-1: Pulp preparation: The original copper-zinc ore is crushed and ground, and the grinding fineness of -0.074mm accounts for 75%; the copper grade in the copper-zinc sulfide ore is 0.57%, the zinc grade is 3.08%, and the sulfur grade is 16.16%

[0088] S2. Flotation

[0089] S2-1: The prepared pulp is subjected to a flotation operation, and the flotation concentration is 35%;

[0090] S2-2: A defoaming device is used for defoaming treatment to break and discharge the foam;

[0091] S3. Co-floatation of copper, zinc and sulfur. Among them, the flotation operation is divided into one-stage roughing and one-stage scavenging;

[0092] S3-1: Roughing: In the roughing stage of flotation, an inhibitor, an activator, a collector and a frother are added. The inhibitor is lime at 5000g / t, the activator copper sulfate is 100g / t, the copper-zinc collector isopropyl ethyl thionocarbamate is used at 80g / t, and the frother No. 2 oil is 30g / t. The flotation time is 8min;

[0093] S3-2: Scavenging: The same types of activator, collector and frother as in roughing are added to the pulp after roughing for one-stage scavenging. The dosage of the activator added in scavenging is 60g / t, the dosage of the collector is 30g / t, the dosage of the frother is 10g / t, and the flotation time is 5min;

[0094] S4. Suppress sulfur in the copper-zinc bulk flotation. The flotation operation is divided into one-stage roughing, one-stage scavenging and four-stage cleaning;

[0095] S4-1: The inhibitors are lime at 2000g / t, sodium sulfite at 2000g / t, and calcium hypochlorite at 400g / t. The added activator copper sulfate is 60g / t, and the copper-zinc collector isopropyl ethyl thionocarbamate is used at 30g / t. The flotation time is 4min;

[0096] S4-2: Copper-zinc bulk concentrate scavenging: The same types of activator and collector as in roughing are added to the pulp after roughing for three-stage concentrate scavenging. The dosage of the activator added in concentrate scavenging is 30g / t, and the dosage of the collector isopropyl ethyl thionocarbamate is 15g / t. The flotation time is 3min;

[0097] S4-3: Copper-zinc bulk concentrate cleaning: Add the same types of inhibitors, activators, and collectors as in the roughing stage to the cleaned pulp for four-stage cleaning. For the first and second stages of cleaning, the dosage of the inhibitor lime is 2000 g / t, the activator copper sulfate is 60 g / t, the dosage of the copper-zinc collector isopropyl ethyl thionocarbamate is 30 g / t, and the flotation time is 4 min. For the third stage of cleaning, the dosage of the inhibitor lime is 1000 g / t, the activator copper sulfate is 30 g / t, the dosage of the copper-zinc collector isopropyl ethyl thionocarbamate is 15 g / t, and the flotation time is 3 min. For the fourth stage of cleaning, the dosage of the inhibitor lime is 500 g / t, the activator copper sulfate is 20 g / t, the dosage of the copper-zinc collector isopropyl ethyl thionocarbamate is 10 g / t, and the flotation time is 2 min.

[0098] S4-4: The pulp after copper-zinc bulk concentrate scavenging is subjected to sulfur flotation. The flotation consists of one-stage roughing and two-stage cleaning. The activator copper sulfate is 200 g / t, the dosage of the sulfur collector is 200 g / t, and the flotation time is 5 min. The sulfur cleaning is blank cleaning without adding flotation reagents, and the flotation time is 5 min.

[0099] S5. Sulfur flotation of the floatable tailings of copper, zinc, and sulfur. Among them, the flotation operation is divided into one-stage sulfur roughing, one-stage sulfur scavenging, and three-stage sulfur cleaning.

[0100] S5-1: Sulfur roughing: Add the activator copper sulfate 200 g / t and the sulfur collector butyl xanthate 200 g / t in the sulfur roughing stage, and the flotation time is 5 min.

[0101] S5-2: Sulfur scavenging: Add the same types of activator and collector as in the roughing stage to the pulp after sulfur roughing for one-stage scavenging. The dosage of the activator added in the scavenging is 100 g / t, the dosage of the sulfur collector butyl xanthate is 60 g / t, and the flotation time is 3 min.

[0102] S5-3: Sulfur cleaning: The sulfur cleaning is blank cleaning without adding flotation reagents, and the flotation time is 3 min.

[0103] It should be noted that the copper-zinc flotation collector is isopropyl ethyl thionocarbamate; the sulfur flotation collectors are amyl xanthate, butyl xanthate, higher xanthate or any combination of them; the flotation frothers include but are not limited to: No. 2 oil, MIBC, etc.

[0104] Test N2: Using the copper-zinc bulk flotation - suppressing sulfur first and then flotation sulfur process flow, the copper recovery rate of the copper-zinc bulk concentrate is 91.42%, the zinc recovery rate is 58.13%, and the sulfur recovery rate is 80.12%.

[0105]

[0106] In summary, the test results of the test examples and the comparative examples show that:

[0107] In Test N1, the process flow of this patent was adopted, and the recovery effect of copper, zinc, and sulfur was good.

[0108] In Test N2, the process of bulk flotation of copper and zinc - depressing sulfur and then re - selecting sulfur was adopted, and the zinc recovery effect was not ideal.

[0109] Example 3: To achieve the defoaming effect:

[0110] As Figures 3 - 13 shown, the defoaming device consists of an installation platform 1, a transmission component 2, a defoaming structure 4, and a driving mechanism 6. The transmission component 2 includes a transmission sleeve 201 and a transmission shaft 202 connected by a spline. The transmission sleeve 201 is installed on the installation platform 1 by bearings, and the bottom end of the transmission shaft 202 penetrates through the inside of the transmission sleeve 201. Among them, an installation frame 3 is bolt - fixed on the outer surface of the bottom end of the transmission shaft 202, and the defoaming structure 4 is detachably installed in the installation frame 3;

[0111] As Figure 3 、 Figure 4 、 Figures 6 - 8 shown, the defoaming structure 4 includes a sliding seat 41 detachably installed in the installation frame 3, a connecting rod 42 fixed inside the sliding seat 41, and a conduction plate 43 fixed at the bottom end of the connecting rod 42. A vibrator 44 is fixed on the outer surface of the conduction plate 43, and a number of filter holes 45 are opened inside the conduction plate 43. The number of defoaming structures 4 is six, and the number of installation frames 3 is two. And the six defoaming structures 4 are evenly distributed in the installation frame 3 in groups of three. The six defoaming structures 4 are evenly distributed in two installation frames 3 in groups of three. This layout ensures that the defoaming device can act uniformly when dealing with foam, avoids the situation of insufficient local defoaming, and improves the overall defoaming effect. As Figures 3 - 5 shown, the driving mechanism 6 includes a double - shaft motor 61 fixed inside the installation platform 1, transmission gears 62 fixed on the two output shafts of the double - shaft motor 61, and a driven gear 63 fixed on the outer surface of the transmission sleeve 201. The driven gear 63 meshes with the bottom transmission gear 62. By driving the driven gear 63 with the double - shaft motor 61 and the transmission between the driven gears 63, the automatic control of the defoaming structure 4 is realized. This design simplifies the operation process and improves the automation degree of the equipment.

[0112] To improve the defoaming effect, in this embodiment, a cleaning structure 5 for cleaning the filter holes 45 is fixedly installed on the outer surface of the conduction plate 43. As Figure 3 、 Figure 4 、 Figure 6 、 Figures 10 - 12As shown in the figure, the cleaning structure 5 includes a frame 51, a transverse plate 52 fixed to the inner side of the frame 51, a through member 53 detachably mounted on the transverse plate 52, and a resistance member 54 mounted on one side of the frame 51. Among them, the through member 53 includes a sleeve 531, mounting rods 532 fixed to the left and right sides of the sleeve 531, and a through pipe 534. The mounting rods 532 penetrate the inside of the frame 51, and a locking ring 533 that abuts against the outer surface of the transverse plate 52 is threadedly mounted on the outer surface of the mounting rods 532. A buffer pad 535 is fixed to the outer surface of one end of the sleeve 531 close to the through pipe 534. The through member 53 is detachably mounted on the transverse plate 52 and is fixed by the threaded connection between the locking ring 533 and the mounting rods 532. This design makes the through member 53 easy to disassemble and replace. When the through member 53 is worn or damaged, it can be quickly replaced, reducing the maintenance cost and time.

[0113] To improve the displacement effect of the through member 53, as Figures 10 - 12 shown, the resistance member 54 includes a mounting block 541 fixed to one side of the frame 51, an adjusting rod 542 threadedly mounted inside the mounting block 541, and a resistance block 543 fixed to the other end of the adjusting rod 542. The resistance block 543 is provided with a first resistance surface 5431 and a second resistance surface 5432. Among them, a reset structure is provided between the conduction plate 43 and the mounting block 541. The reset structure includes a guide rod 544 fixed to the outer surface of the conduction plate 43 and an abutting ring 545 fixed to the outer surface of one end of the guide rod 545. The guide rod 544 penetrates the inside of the mounting block 541, and a reset spring 546 surrounding the outside of the guide rod 545 is fixed between the abutting ring 545 and the mounting block 541. The design of the cleaning structure 5 enables the through member 53 to periodically clean the filter holes 45 under the action of the resistance member 54 and the reset structure. This avoids the influence of the filter holes being blocked by foam residues or impurities on the defoaming effect and ensures the continuous and efficient operation of the defoaming device.

[0114] It is worth mentioning that the adjusting rod 542 in the resistance member 54 can be threadedly mounted inside the mounting block 541. By rotating the adjusting rod 542, the contact force between the resistance block 543 and the through member 53 can be adjusted, thereby controlling the displacement speed and cleaning force of the through member 53. This design enables the cleaning structure 5 to adapt to different foam characteristics and defoaming requirements, improving the flexibility and applicability of the equipment.

[0115] To improve the defoaming quality, in this embodiment, a lifting structure 7 for cooperating with the driving mechanism 6 is provided on the upper surface of the mounting table 1, as Figures 3 - 5 and Figure 9As shown in the figure, the lifting structure 7 includes a rotating cylinder 71 with bearings installed on the upper surface of the mounting table 1, a linkage gear 72 fixed to the outer surface of the bottom end of the rotating cylinder 71 and meshing with the top transmission gear 62, and a connecting member provided at the top end of the transmission shaft 202. The connecting member includes a mounting sleeve 72 rotatably installed on the outer surface of the top end of the transmission shaft 202, a connecting rod 75 fixed to the outer surface of the mounting sleeve 72, and a slider 75 rotatably connected to the other end of the connecting rod 75. An inclined chute 73 is provided on the outer surface of the rotating cylinder 71, and the slider 75 is slidably connected to the inclined chute 73. The design of the lifting structure 7 enables the transmission shaft 202 and the defoaming structure 4 thereon to be adjusted up and down according to actual needs. By rotating the rotating cylinder 71, the linkage gear 72 meshes with the top transmission gear 62, driving the connecting member (including the mounting sleeve 72, the connecting rod 75, and the slider 75) to slide along the inclined chute 73, thereby realizing the lifting of the transmission shaft 202. This adjustment ability enables the defoaming structure 4 to be more accurately positioned in the foam layer, improving the pertinence and quality of defoaming. Among them, a guiding structure 9 for limiting the transmission shaft 202 is provided on the upper surface of the mounting table 1, and a limiting structure 8 for limiting the defoaming structure 4 is also provided on the lower surface of the mounting table 1.

[0116] To ensure defoaming stability, as Figure 3 , Figure 5 , Figure 13 shown, the limiting structure 8 includes a circular platform 81 fixed to the lower surface of the mounting table 1. A limiting chute 82 is provided inside the circular platform 81, and a limiting block 83 is slidably connected inside the limiting chute 82. A connecting rod 84 penetrating inside the limiting block 83 is fixed to the upper surface of the mounting frame 3. The design of the limiting chute 82 and the limiting block 83 in the limiting structure 8, and the penetrating fixation of the connecting rod 84 ensure that the mounting frame 3 and the defoaming structure 4 thereon can remain stable during the lifting process and will not shift due to external forces or vibrations. This stability is crucial for the continuity and reliability of the defoaming effect. A locking mechanism 10 for limiting the transmission shaft 202 is provided on the upper surface of the circular platform 81. The locking mechanism 10 includes a cylinder seat 1001 fixed to the upper surface of the circular platform 81, a telescopic electric cylinder 1002 fixed inside the cylinder seat 1001, and a ball 1003 rotatably installed at the output end of the telescopic electric cylinder 1002. An annular chute is provided inside the transmission shaft 202, and the ball 1003 is in rolling connection with the annular chute. The design of the telescopic electric cylinder 1002 and the ball 1003 in the locking mechanism 10 realizes the precise control of the position of the transmission shaft 202. When it is necessary to lock the transmission shaft 202, the telescopic electric cylinder 1002 extends, and the ball 1003 is embedded in the annular chute inside the transmission shaft 202, thereby fixing the position of the transmission shaft 202.

[0117] As Figures 3 - 13 shown, the principle of the separation method of copper-zinc sulfide ore containing marmatite provided in this embodiment is as follows:

[0118] First, the dual-axis motor 61 in the driving mechanism 6 starts, driving the transmission gear 62 to rotate. The transmission gear 62 meshes with the driven gear 63, thereby driving the transmission sleeve 201 to rotate on the mounting table 1. The transmission shaft 202 is connected to the transmission sleeve 201 through a spline connection. Therefore, the rotation of the transmission sleeve 201 drives the transmission shaft 202 to rotate. An installation frame 3 is fixed to the bottom end of the transmission shaft 202, and an anti-foaming structure 4 is detachably installed in the installation frame 3. A vibrator 44 is fixed to the outer surface of the conduction plate 43 in the anti-foaming structure 4. When the vibrator 44 works, it generates vibrations, which are transmitted to the liquid through the conduction plate 43 to achieve the anti-foaming effect. The filter holes 45 on the conduction plate 43 allow the liquid to pass through, and at the same time, the vibrations of the vibrator 44 help to break the foam;

[0119] The through member 53 in the cleaning structure 5 can clean the filter holes 45 through the sleeve 531 and the through pipe 534 to prevent blockage. The resistance member 54 adjusts the position of the resistance block 543 through the adjusting rod 542 to control the moving resistance of the cleaning structure 5 on the conduction plate 43. The reset structure guide rod 544, the abutting ring 545 and the reset spring 546 ensure that the cleaning structure 5 can be reset after moving;

[0120] The rotating cylinder 71 in the lifting structure 7 meshes with the top transmission gear 62 through the linkage gear 72. When the rotating cylinder 71 rotates, it can drive the transmission shaft 202 to move up and down. The slider 75 slides in the inclined chute 73 to realize the lifting of the transmission shaft 202, thereby adjusting the working position of the anti-foaming structure 4.

[0121] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in names as a way to distinguish components, but use the difference in functions of components as the criterion for distinction. As mentioned throughout the specification and claims, the term "comprising" is an open-ended term and should be interpreted as "including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve technical problems within a certain error range and basically achieve the technical effect.

[0122] It should be noted that the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a commodity or system including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent in such commodity or system. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of another identical element in the commodity or system including the element.

[0123] The foregoing description has shown and described several preferred embodiments of the present invention. However, as previously mentioned, it should be understood that the present invention is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the techniques or knowledge in the relevant field. Any changes and variations made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A method for separating sulfide copper-zinc ore containing sphalerite, comprising the following steps: S1. Preliminary preparation S1-1: Slurry preparation: The copper-zinc ore is crushed and ground, with a grinding fineness of -0.074mm accounting for 65%-75%; S2. Flotation S2-1: flotation of the prepared pulp with a flotation concentration of 25%-35%; S2-2: Use a defoaming device to perform defoaming treatment to break up and discharge the foam; S3, copper, zinc, sulfur, etc. can float, among which the flotation operation is divided into a roughing selection and a scavenging selection; S3-1: Roughing: In the roughing flotation section, inhibitors, activators, collectors and frothers are added. The inhibitors are lime 1000-3000g / t, sodium sulfite 1000-3000g / t, calcium hypochlorite 200-400g / t, the activator copper sulfate added is 100-200g / t, the copper-zinc collector dosage is 40-80g / t, the frother is 20-40g / t, and the flotation time is 4-8min; S3-2: Scavenging: Add the same type of activator, collector and frother as in the roughing to the pulp after roughing for a scavenging process. The amount of activator added in the scavenging process is 40-80g / t, the amount of collector is 20-40g / t, the amount of frother is 10-20g / t, and the flotation time is 3-6min; S4, copper-zinc mixed flotation-sulfur suppression-sulfur selection flotation, in which the flotation operation is divided into a first stage of copper-zinc mixed roughing, a third stage of copper-zinc fine scavenging, a fourth stage of copper-zinc concentration and sulfur concentration; S4-1: Copper-zinc mixed roughing: In the copper-zinc mixed flotation roughing section, inhibitors, activators and collectors are added. The inhibitors are lime 1000-3000g / t, sodium sulfite 1000-3000g / t, calcium hypochlorite 200-400g / t, the activator copper sulfate added is 40-80g / t, the copper-zinc collector dosage is 10-40g / t, and the flotation time is 3-6min; S4-2: Copper-zinc mixed fine scavenging: add the same type of activator and collector as the roughing slurry to the pulp after roughing to carry out three-stage fine scavenging. The amount of activator added in fine scavenging is 10-30g / t, the amount of collector added is 10-20g / t, and the flotation time is 2-4min; S4-3: Copper-zinc mixed concentration: Add the same type of inhibitor, activator and collector as the roughing to the selected pulp for four-stage concentration. The first and second stages of concentration inhibitor lime dosage is 1000-3000g / t, sodium sulfite 1000-3000g / t, calcium hypochlorite 200-400g / t, activator copper sulfate is 40-80g / t, copper-zinc collector dosage is 10-40g / t, and flotation time is 2-4min; the third stage of concentration inhibitor lime dosage is 500-1500g / t , sodium sulfite 500-1500g / t, calcium hypochlorite 100-200g / t, activator copper sulfate 20-40g / t, copper-zinc collector dosage 10-20g / t, flotation time 2-4min; fourth stage selection inhibitor lime dosage 300-800g / t, sodium sulfite 300-800g / t, calcium hypochlorite 50-200g / t, activator copper sulfate 20-40g / t, copper-zinc collector dosage 10-40g / t, flotation time 1-3min; S4-4: The pulp after copper-zinc mixed fine scavenging is subjected to sulfur flotation operation. The flotation is one-stage roughing and two-stage concentrating. The activator copper sulfate is 100-200g / t, the sulfur collector dosage is 100-200g / t, and the flotation time is 3-6min. The sulfur concentrating is blank concentrating, no flotation reagent is added, and the flotation time is 2-4min. S5, sulfur flotation of floatable tailings such as copper, zinc and sulfur, where the flotation operation is divided into one stage of sulfur roughing, one stage of sulfur scavenging and two stages of sulfur cleaning; S5-1: Sulfur roughing: 100-300g / t of copper sulfate activator and 100-200g / t of sulfur collector are added to the sulfur roughing section, and the flotation time is 3-6min; S5-2: Sulfur scavenging: Add the same type of activator and collector as in the roughing to the pulp after sulfur roughing for a scavenging process. The amount of activator added in the scavenging process is 50-150g / t, and the amount of sulfur collector added is 50-100g / t. The flotation time is 2-4min. S5-3: Sulfur concentration: Sulfur concentration is blank concentration, no flotation agent is added, and the flotation time is 2-4 minutes.

2. The method for separating the sulfide copper-zinc ore containing iron sphalerite according to claim 1, characterized in that: The inhibitor is a combination of lime, sodium sulfite and calcium hypochlorite, and the copper and zinc flotation collector is isopropyl ethyl thiocarbamate.

3. The method for separating the sulfide copper-zinc ore containing sphalerite according to claim 1, characterized in that: The sulfur flotation collectors are amyl xanthate, butyl xanthate and advanced xanthate.

4. The method for separating the sulfide copper-zinc ore containing sphalerite according to claim 1, characterized in that: The defoaming device is composed of a mounting platform (1), a transmission component (2), a defoaming structure (4) and a driving mechanism (6); the transmission component (2) comprises a transmission sleeve (201) and a transmission shaft (202) connected by splines; the bearing of the transmission sleeve (201) is mounted on the mounting platform (1), and the bottom end of the transmission shaft (202) passes through the interior of the transmission sleeve (201).

5. The method for separating the sulfide copper-zinc ore containing iron sphalerite according to claim 4, characterized in that: A mounting frame (3) is fixed by bolts on the outer surface of the bottom end of the transmission shaft (202), and the defoaming structure (4) is detachably mounted in the mounting frame (3); The defoaming structure (4) comprises a sliding seat (41) detachably mounted in the mounting frame (3), a connecting rod (42) fixed inside the sliding seat (41), and a conducting plate (43) fixed to the bottom end of the connecting rod (42); a vibrator (44) is fixed to the outer surface of the conducting plate (43); a plurality of filter holes (45) are provided inside the conducting plate (43); the number of the defoaming structures (4) is six, the number of the mounting frames (3) is two, and the six defoaming structures (4) are equidistantly distributed in groups of three in the mounting frame (3).

6. The method for separating the sulfide copper-zinc ore containing sphalerite according to claim 4, characterized in that: The driving mechanism (6) comprises a double-axis motor (61) fixed inside the mounting platform (1), a transmission gear (62) fixed on two output shafts of the double-axis motor (61), and a driven gear (63) fixed on the outer surface of the transmission sleeve (201), wherein the driven gear (63) meshes with the bottom transmission gear (62).

7. The method for separating the sulfide copper-zinc ore containing sphalerite according to claim 5, characterized in that: A cleaning structure (5) for cleaning the filter holes (45) is fixedly mounted on the outer surface of the conductive plate (43), the cleaning structure (5) comprising a frame (51), a horizontal plate (52) fixed to the inner side of the frame (51), a through piece (53) detachably mounted on the horizontal plate (52), and a resistance piece (54) mounted on one side of the frame (51); The through-piece (53) comprises a sleeve (531), a mounting rod (532) fixed to the left and right sides of the sleeve (531), and a through pipe (534); the mounting rod (532) passes through the interior of the frame (51); a locking ring (533) abutting against the outer surface of the cross plate (52) is threadedly mounted on the outer surface of the mounting rod (532); and a buffer pad (535) is fixed to the outer surface of one end of the sleeve (531) close to the through pipe (534).

8. The method for separating the sulfide copper-zinc ore containing sphalerite according to claim 7, characterized in that: The resistance member (54) comprises a mounting block (541) fixed to one side of the frame (51), an adjusting rod (542) threadedly mounted inside the mounting block (541), and a resistance block (543) fixed to the other end of the adjusting rod (542), wherein the resistance block (543) is provided with a first resistance surface (5431) and a second resistance surface (5432); A reset structure is provided between the conductive plate (43) and the mounting block (541), the reset structure comprising a guide rod (544) fixed to the outer surface of the conductive plate (43) and an abutment ring (545) fixed to the outer surface of one end of the guide rod (545), the guide rod (544) passes through the interior of the mounting block (541), and a reset spring (546) surrounding the exterior of the guide rod (545) is fixed between the abutment ring (545) and the mounting block (541).

9. The method for separating the sulfide copper-zinc ore containing sphalerite according to claim 6, characterized in that: The upper surface of the mounting platform (1) is provided with a lifting structure (7) used in conjunction with the driving mechanism (6), the lifting structure (7) comprising a rotating drum (71) bearing-mounted on the upper surface of the mounting platform (1), a linkage gear (72) fixed to the outer surface of the bottom end of the rotating drum (71) and meshing with the top transmission gear (62), and a connecting piece arranged at the top end of the transmission shaft (202), the connecting piece comprising a mounting sleeve (72) rotatably mounted on the outer surface of the top end of the transmission shaft (202), a connecting rod (75) fixed to the outer surface of the mounting sleeve (72), and a sliding block (75) rotatably mounted on the other end of the connecting rod (75), the outer surface of the rotating drum (71) is provided with an inclined sliding groove (73) arranged obliquely, and the sliding block (75) is slidably connected to the inclined sliding groove (73); The upper surface of the mounting platform (1) is provided with a guide structure (9) for limiting the position of the transmission shaft (202), and the lower surface of the mounting platform (1) is also provided with a limiting structure (8) for limiting the position of the defoaming structure (4).

10. The method for separating the copper-zinc sulfide ore containing sphalerite according to claim 9, characterized in that: The limiting structure (8) comprises a circular platform (81) fixed to the lower surface of the mounting platform (1), a limiting sliding groove (82) is provided inside the circular platform (81), a limiting block (83) is slidably connected inside the limiting sliding groove (82), and a connecting rod (84) penetrating inside the limiting block (83) is fixed on the upper surface of the mounting frame (3); a locking mechanism (10) for limiting the transmission shaft (202) is arranged on the upper surface of the circular platform (81), and the locking mechanism (10) comprises a cylinder seat (1001) fixed to the upper surface of the circular platform (81), a telescopic electric cylinder (1002) fixed inside the cylinder seat (1001), and a ball (1003) rotatably mounted on the output end of the telescopic electric cylinder (1002); an annular sliding groove is provided inside the transmission shaft (202), and the ball (1003) is rollingly connected to the annular sliding groove.

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