High-acid-consumption copper cobalt oxide ore leaching distributed intelligent adjusting acid adding system

Abstract

The utility model relates to a high-acid-consumption copper cobalt oxide ore leaching collecting-distributing type intelligent adjusting acid adding system which solves the problem that intelligent automatic control cannot be achieved by collecting or distributing multi-point acid adding of an acid adding mode of existing equipment. Comprising a power supply, an alarm lamp, a liquid level switch, a 1 # leaching tank inlet chute, a production water electric adjusting ball valve, a defoaming nozzle, a sulfuric acid electric adjusting ball valve A, a sulfuric acid electric adjusting ball valve B, a manual adjusting ball valve, a sulfuric acid stainless steel pipe, a sulfuric acid storage tank, a production water tank and a production water pipe, when the liquid level switch senses that the liquid level of the inlet chute of the 1 # leaching tank rises to a fixed value, the liquid level switch closes the communication circuit, and the acid adding system is started; concentrated acid adding of the leaching tanks 1 # and 2 # is stopped, when the ore pulp liquid level at the inlet chute of the leaching tank 1 # is gradually lowered to be below a fixed value, the liquid level switch automatically cuts off the circuit, and dispersed acid adding of the leaching tanks 3 #, 4 #, 5 # and 6 # is stopped. Pollution to field environment facilities due to the fact that a large amount of ore pulp overflows the tank body can be avoided, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to an intelligent regulating acid adding system, in particular to a distributed intelligent regulating acid adding system for leaching high acid consumption oxidized copper-cobalt ores, belonging to the technical field of hydrometallurgy. Background Art

[0002] Wet leaching is a process in hydrometallurgy, which involves immersing ore, concentrate, roasted sand or other materials in a selected solvent, and using the different solubility of various components in the solvent to dissolve the soluble metals or impurities to be extracted into the solution under certain conditions.

[0003] In the wet acid leaching process of calcium-magnesium high-acid-consumption oxidized copper-cobalt ore, concentrated sulfuric acid is required as an auxiliary material to be added to the leaching tank to form a dilute sulfuric acid solution as a leaching solvent, so that metal ions such as copper and cobalt are dissolved into the solution for extraction and precipitation in subsequent metallurgical processes in production.

[0004] The acid leaching process of calcium magnesium high acid consumption copper-cobalt oxide ore generally takes several hours to complete. The process equipment involves multiple leaching tanks connected in series for the continuous leaching process.

[0005] The main components of calcium magnesium high acid consumption copper-cobalt oxide ore are malachite, chrysocolla, azurite, hydrocobaltite, and cobaltite, and the associated gangue components contain a large amount of dolomite and serpentine. During the acid addition process in the leaching tank, due to the fluctuation of ore properties, the instantaneous acid consumption fluctuates greatly. A large number of bubbles will be generated at the inlet and outlet of the 1# leaching tank when the acid consumption of the high acid consumption ore is large, resulting in a bubbling phenomenon, which overflows the tank body, causing pollution to the on-site environmental facilities and reducing the processing volume, affecting production efficiency.

[0006] According to actual experience and experimental verification, the treatment method for the bubbling phenomenon of calcium magnesium high acid consumption oxidized copper-cobalt ore can be controlled by adjusting the centralized acid addition method to the dispersed multi-point acid addition method. The advantage of centralized acid addition is that the acid concentration of the leaching solution is high and the leaching reaction is rapid; the advantage of multi-point dispersed acid addition to multiple leaching tanks is that the acid concentration of the leaching solution is low, the reaction process is moderate, and the bubbling phenomenon is reduced.

[0007] The existing acid addition location of the leaching tank is mostly concentrated at the top of the pre-leaching tank or the 1# and 2# leaching tanks. The acid addition amount is mostly adjusted by manual monitoring and manual adjustment of the valve opening and closing size. It is difficult to detect the bubbling tank in time and adjust the acid addition amount or acid addition method. In view of this actual production problem, an intelligent acid addition system is urgently needed to improve production efficiency.

[0008] The multi-point acid addition device for leaching in the clean production process of vanadium oxide (patent number: CN204237846U) mentions that the device consists of two parts: an acid inlet main pipe and a multi-point acid addition unit, which effectively solves the problem of uniformity of acid addition in the leaching process in the "calcification roasting-sulfuric acid leaching" clean production process of vanadium oxide, ensures stable control of the pH value in the leaching process, avoids the problem of low local pH and vanadium precipitation loss in the leaching process, thereby ensuring the leaching effect and vanadium leaching yield. The multi-point acid addition unit is a circular spray plate, and a plurality of acid outlet holes are evenly arranged on the circular spray plate. The device is for the clean production process of vanadium oxide and does not have an intelligent adjustment function. Utility Model Content

[0009] The utility model provides a distributed intelligent regulating acid adding system for leaching high acid consumption oxidized copper-cobalt ore, thereby solving the problem that the centralized or dispersed multi-point acid adding in the existing equipment cannot realize intelligent automatic control.

[0010] The utility model is realized by the following technical solutions:

[0011] A distributed intelligent regulating acid adding system for leaching high acid consumption oxidized copper-cobalt ore, comprising a power supply (1), an alarm light (2), a liquid level switch (3), a No. 1 leaching tank inlet chute (4), a production water electric regulating ball valve (5), a defoaming nozzle (6), a sulfuric acid electric regulating ball valve A (7), a sulfuric acid electric regulating ball valve B (8), a manual regulating ball valve (9), a sulfuric acid stainless steel pipe (10), a sulfuric acid storage tank (11), a production water tank (12) and a production water pipe (13); the alarm light (2) is connected to the liquid level switch (3), the No. 1 leaching tank inlet chute (4) is connected to the No. 1 leaching tank, the production water pipe (13) is connected to the production water tank (12), and the production water electric regulating ball valve (5) is installed in the production water tank. The sulfuric acid electric regulating ball valve A (7) is installed on the sulfuric acid stainless steel pipe (10) leading to the 1# and 2# leaching tanks, the sulfuric acid electric regulating ball valve B (8) is installed on the sulfuric acid stainless steel pipe connected between the 2# and 3# leaching tanks, and four manual regulating ball valves (9) are installed at the branch pipes of the sulfuric acid stainless steel pipe (10) leading to the 3#, 4#, 5# and 6# leaching tanks, which are in a normally open state. The sulfuric acid stainless steel pipe (10) is connected to the sulfuric acid storage tank (11), and the power supply (1) is used to provide power to the alarm light (2), the liquid level switch (3), the produced water electric regulating ball valve (5), the sulfuric acid electric regulating ball valve A (7) and the sulfuric acid electric regulating ball valve B (8);

[0012] When the liquid level switch (3) senses that the liquid level of the inlet chute (4) of the No. 1 leaching tank has risen to a fixed value, the liquid level switch (3) closes the connecting circuit and the acid adding system is started; at the same time, the alarm light (2) is turned on, the production water electric regulating ball valve (5) is turned on, and the defoaming nozzle (6) emits a jet to defoam; at the same time, the sulfuric acid electric regulating ball valve B (8) is automatically opened, and the sulfuric acid electric regulating ball valve A (7) is automatically closed; at the same time, the concentrated sulfuric acid in the sulfuric acid storage tank (11) is dispersedly added to the No. 3, No. 4, No. 5, and No. 6 leaching tanks through the sulfuric acid stainless steel pipe (10) and the sulfuric acid electric regulating ball valve B (8), and the No. 1 and No. 2 leaching tanks are concentratedly added. The acid is stopped. When the slurry level at the entrance chute (4) of the No. 1 leaching tank gradually drops below the set value and the bubbling problem is solved, the liquid level switch (3) automatically disconnects the circuit, the alarm light (2) turns off, the production water electric regulating ball valve (5) turns off, and the defoaming nozzle (6) stops jetting; at the same time, the sulfuric acid electric regulating ball valve B (8) automatically closes, and the sulfuric acid electric regulating ball valve A (7) automatically opens; at the same time, the concentrated sulfuric acid in the sulfuric acid storage tank (11) is concentratedly added to the No. 1 and No. 2 leaching tanks through the sulfuric acid stainless steel pipe (10) and the sulfuric acid electric regulating ball valve A (7), and the dispersed addition of acid to the No. 3, No. 4, No. 5, and No. 6 leaching tanks is stopped.

[0013] The specification of the liquid level switch (3) is EFVS-25 stainless steel liquid level switch, which is resistant to acid corrosion.

[0014] The specification of the production water electric regulating ball valve (5) is Q911F-16F stainless steel micro electric ball valve.

[0015] The specifications of the sulfuric acid electric regulating ball valve A (7) and the sulfuric acid electric regulating ball valve B (8) are Q911F-16F stainless steel micro electric ball valves.

[0016] The manual regulating ball valve (9) is a Q41F-16P stainless steel ball valve.

[0017] The utility model discloses a distributed intelligent regulating acid adding system for leaching high acid consumption oxidized copper-cobalt ores, which prevents a large amount of ore pulp from overflowing the tank and causing pollution to on-site environmental facilities, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0019] like Figure 1 As shown, the utility model provides a complete set of distributed intelligent regulating acid adding system, which can instantly judge whether the tank is bubbling according to the on-site production situation, realize the intelligent automatic control of centralized or decentralized multi-point acid adding, eliminate the environmental impact of equipment facilities caused by the bubbling phenomenon and improve production efficiency.

[0020] The utility model provides a distributed intelligent regulating acid adding system for leaching high acid consumption copper-cobalt oxide ores, comprising a power supply (1), an alarm lamp (2), a liquid level switch (3), a No. 1 leaching tank inlet chute (4), a production water electric regulating ball valve (5), a defoaming nozzle (6), a sulfuric acid electric regulating ball valve A (7), a sulfuric acid electric regulating ball valve B (8), a manual regulating ball valve (9), a sulfuric acid stainless steel pipe (10), a sulfuric acid storage tank (11), a production water tank (12) and a production water pipe (13). The alarm light (2) is connected to the liquid level switch (3); the production water electric regulating ball valve (5) is connected to the defoaming nozzle (6); the sulfuric acid electric regulating ball valve A (7) is installed on the sulfuric acid stainless steel pipe (10) leading to the 1# and 2# leaching tanks; the sulfuric acid electric regulating ball valve B (8) is installed on the sulfuric acid stainless steel pipe connected between the 2# and 3# leaching tanks; four manual regulating ball valves (9) are installed at the branch pipes of the sulfuric acid stainless steel pipe (10) leading to the 3#, 4#, 5# and 6# leaching tanks; the sulfuric acid stainless steel pipe (10) is connected to the sulfuric acid storage tank (11); and the production water pipe (13) is connected to the production water tank (12).

[0021] In the wet acidic stirring leaching production process of calcium magnesium high acid consumption oxidized copper-cobalt ore, the copper grade of the original ore is 2%-3%, the cobalt grade is 0.3%-0.45%, the copper oxidation rate (copper oxidation rate refers to the percentage of copper oxide in the total copper, CuOx / Cu) is greater than 95%, the calcium magnesium component and content CaO is greater than 5%, and MgO is greater than 7%. After the calcium magnesium high acid consumption oxidized copper-cobalt ore ore is crushed-grinded-thickened-pre-leaching tank slurry adjustment process, the slurry concentration reaches 25-30%. When the slurry after slurry adjustment enters the No. 1 leaching tank through the conveying pipeline, due to the fluctuation of ore properties, when the acid consumption reaches 150-250kg / (t·ore), a large number of bubbles will be generated at the entrance of the No. 1 leaching tank, and the liquid level of the chute at the entrance of the No. 1 leaching tank will rise, and the slurry will soon burst.

[0022] When the liquid level switch (3) of the distributed intelligent regulating acid addition system for leaching high acid consumption oxidized copper-cobalt ore senses that the liquid level of the inlet chute 4 of the No. 1 leaching tank has risen to 450 mm, the liquid level switch (3) closes the connecting circuit and the acid addition system is started; at the same time, the alarm light (2) is turned on, the production water electric regulating ball valve (5) is turned on, and the defoaming nozzle (6) emits a jet to defoam; at the same time, the sulfuric acid electric regulating ball valve B (8) is automatically opened, and the sulfuric acid electric regulating ball valve A (7) is automatically closed; at the same time, the 96%-98% concentrated sulfuric acid in the sulfuric acid storage tank (11) is dispersedly added to the No. 3, No. 4, No. 5, and No. 6 leaching tanks through the sulfuric acid stainless steel pipe (10) and the sulfuric acid electric regulating ball valve B (8), and the concentrated acid addition to the No. 1 and No. 2 leaching tanks is stopped. When the slurry level at the entrance chute of the No. 1 leaching tank gradually drops below 450 mm and the bubbling problem is solved, the liquid level switch (3) automatically disconnects the circuit, the alarm light (2) turns off, the production water electric regulating ball valve (5) turns off, and the defoaming nozzle (6) stops jetting; at the same time, the sulfuric acid electric regulating ball valve B (8) automatically closes, and the sulfuric acid electric regulating ball valve A (7) automatically opens; at the same time, the 96%-98% concentrated sulfuric acid in the sulfuric acid storage tank (11) is concentratedly added to the No. 1 and No. 2 leaching tanks through the sulfuric acid stainless steel pipe (10) and the sulfuric acid electric regulating ball valve A (7), and the dispersed addition of acid to the No. 3, No. 4, No. 5, and No. 6 leaching tanks is stopped.

[0023] The power supply (1) is a 220V AC power supply, which is used to provide power for the alarm light (2), the liquid level switch (3), the production water electric regulating ball valve (5), the sulfuric acid electric regulating ball valve (7) and (8).

[0024] The specification of the alarm light (2) is a DC24V alarm light, which is used to alarm when there is a bubbling phenomenon.

[0025] (3) Specifications of the liquid level switch: EFVS-25 stainless steel liquid level switch, resistant to acid corrosion, closes the circuit when the liquid level is greater than 450mm, and is used to start the intelligent acid addition system when the tank is bubbling.

[0026] The specification of the inlet chute (4) of the 1# leaching tank is 2500mm×1000mm×500mm;

[0027] The production water electric regulating ball valve (5) is a stainless steel micro electric ball valve of specification Q911F-16F. When the power is turned on, the valve opens and connects the production water (0.4-0.6MPa) with the defoaming nozzle (6) to realize the defoaming function of the bubbling tank.

[0028] The defoaming nozzle (6) has a specification of φ20mm×800mm and a surface aperture of φ1mm, and is used to generate jet defoaming;

[0029] The sulfuric acid electric regulating ball valve A (7) is a stainless steel miniature electric ball valve of specification Q911F-16F. When the power is on, the valve is closed and the sulfuric acid output is prohibited.

[0030] The sulfuric acid electric regulating ball valve B (8) is a stainless steel micro electric ball valve of specification Q911F-16F. When the power is turned on, the valve opens, and the sulfuric acid passes through the valve and then through the sulfuric acid stainless steel pipe (10) into the manual regulating ball valve (9).

[0031] The manual regulating ball valve (9) is a stainless steel ball valve of specification Q41F-16P, which is used for dispersing sulfuric acid into leaching tanks 3#, 4#, 5# and 6#, and is in a normally open state.

[0032] The sulfuric acid stainless steel pipe (10) is manufactured by processing a stainless steel pipe with a specification of φ40mm×10m.

[0033] The sulfuric acid storage tank (11) is a carbon steel storage tank with a specification of φ3m×5m, and stores sulfuric acid with a concentration of 96%-98%. The sulfuric acid is pumped through a sulfuric acid pump (Q=25m 3 / h, H=40) is pumped into the sulfuric acid stainless steel pipe (10).

[0034] The production water tank (12) is a carbon steel storage tank with a specification of φ18m×8m.

[0035] The production water tank (13) is made of stainless steel pipe with a specification of φ40mm×10m.

[0036] By utilizing the distributed intelligent regulating acid adding system for leaching copper-cobalt ore with high acid consumption in the utility model, the bubbling phenomenon in the calcium-magnesium high acid consumption copper-cobalt ore leaching workshop is effectively controlled, the number of bubbling is reduced from 1 to 3 times / month to 0 times / month, the upstream grinding capacity is increased by about 1,000-12,000 tons / month, the bubbling problem at the entrance of the No. 1 leaching tank is effectively solved, the slurry is prevented from overflowing the tank in large quantities to cause pollution to the on-site environmental facilities, and the production efficiency is improved.

Claims

1. A distributed intelligent regulating acid addition system for leaching high acid consumption oxidized copper-cobalt ore, characterized by: The invention comprises a power supply (1), an alarm light (2), a liquid level switch (3), a No. 1 leaching tank inlet chute (4), a production water electric regulating ball valve (5), a defoaming nozzle (6), a sulfuric acid electric regulating ball valve A (7), a sulfuric acid electric regulating ball valve B (8), a manual regulating ball valve (9), a sulfuric acid stainless steel pipe (10), a sulfuric acid storage tank (11), a production water tank (12) and a production water pipe (13); the alarm light (2) is connected to the liquid level switch (3), the No. 1 leaching tank inlet chute (4) is connected to the No. 1 leaching tank, the production water pipe (13) is connected to the production water tank (12), the production water electric regulating ball valve (5) is installed on the production water pipe (13) and connected to the defoaming nozzle The electric regulating ball valve A (7) of sulfuric acid is installed on the sulfuric acid stainless steel pipe (10) leading to the 1# and 2# leaching tanks, the electric regulating ball valve B (8) of sulfuric acid is installed on the sulfuric acid stainless steel pipe connected between the 2# and 3# leaching tanks, and four manual regulating ball valves (9) are installed at the branch pipes of the sulfuric acid stainless steel pipe (10) leading to the 3#, 4#, 5# and 6# leaching tanks, which are in a normally open state. The sulfuric acid stainless steel pipe (10) is connected to the sulfuric acid storage tank (11), and the power supply (1) is used to provide power to the alarm light (2), the liquid level switch (3), the produced water electric regulating ball valve (5), the sulfuric acid electric regulating ball valve A (7) and the sulfuric acid electric regulating ball valve B (8); When the liquid level switch (3) senses that the liquid level of the inlet chute (4) of the No. 1 leaching tank has risen to a fixed value, the liquid level switch (3) closes the connecting circuit and the acid adding system is started; at the same time, the alarm light (2) is turned on, the production water electric regulating ball valve (5) is turned on, and the defoaming nozzle (6) emits a jet to defoam; at the same time, the sulfuric acid electric regulating ball valve B (8) is automatically opened, and the sulfuric acid electric regulating ball valve A (7) is automatically closed; at the same time, the concentrated sulfuric acid in the sulfuric acid storage tank (11) is dispersedly added to the No. 3, No. 4, No. 5, and No. 6 leaching tanks through the sulfuric acid stainless steel pipe (10) and the sulfuric acid electric regulating ball valve B (8), and the No. 1 and No. 2 leaching tanks are concentratedly added. The acid is stopped. When the slurry level at the entrance chute (4) of the No. 1 leaching tank gradually drops below the set value and the bubbling problem is solved, the liquid level switch (3) automatically disconnects the circuit, the alarm light (2) turns off, the production water electric regulating ball valve (5) turns off, and the defoaming nozzle (6) stops jetting; at the same time, the sulfuric acid electric regulating ball valve B (8) automatically closes, and the sulfuric acid electric regulating ball valve A (7) automatically opens; at the same time, the concentrated sulfuric acid in the sulfuric acid storage tank (11) is concentratedly added to the No. 1 and No. 2 leaching tanks through the sulfuric acid stainless steel pipe (10) and the sulfuric acid electric regulating ball valve A (7), and the dispersed addition of acid to the No. 3, No. 4, No. 5, and No. 6 leaching tanks is stopped.

2. According to claim 1, a distributed intelligent adjustment and acid addition system for leaching high acid consumption copper-cobalt ore is characterized by: The specification of the liquid level switch (3) is EFVS-25 stainless steel liquid level switch, which is resistant to acid corrosion.

3. According to claim 1, a distributed intelligent adjustment and acid addition system for leaching high acid consumption copper-cobalt ore is characterized by: The specification of the production water electric regulating ball valve (5) is Q911F-16F stainless steel micro electric ball valve.

4. The high acid consumption oxidized copper-cobalt ore leaching distributed intelligent regulating acid addition system according to claim 1 is characterized by: The specifications of the sulfuric acid electric regulating ball valve A (7) and the sulfuric acid electric regulating ball valve B (8) are Q911F-16F stainless steel micro electric ball valves.

5. The high acid consumption oxidized copper-cobalt ore leaching distributed intelligent regulating acid addition system according to claim 1 is characterized by: The manual regulating ball valve (9) is a Q41F-16P stainless steel ball valve.

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