CN217313907U

CN217313907U - Copper-lead mixed flotation concentrate flotation separation and pesticide removal system

Info

Publication number: CN217313907U
Application number: CN202220583490.2U
Authority: CN
Inventors: 段胜红; 姜亚雄; 高起方; 谢恩龙
Original assignee: Yunnan Gold Mining Group Co ltd
Current assignee: Yunnan Gold Mining Group Co ltd
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2022-08-30
Anticipated expiration: 2032-03-17

Abstract

The utility model relates to a copper-lead mixed flotation concentrate flotation separation and reagent removal system, which comprises a mixing tank, wherein a stirrer is arranged in the mixing tank, a thickener, a preparation barrel and an active carbon storage tank are arranged above the mixing tank, and the discharge ports of the thickener and the preparation barrel are connected with the mixing tank through pipelines; the activated carbon storage tank is connected with the upper end of the mixing tank through a spiral feeder; the lower part of the mixing tank is connected with a feed inlet of the medicine-removing stirring tank through a pump; the preparation barrel and the medicine-removing stirring tank are provided with a stirrer; valves are arranged on the pipelines of the thickener, the preparation barrel and the mixing tank, and valves are arranged on the pipelines of the active carbon storage tank and the spiral feeder. The utility model discloses can be to there being a large amount of surplus flotation reagents in the copper lead mixed flotation concentrate and carry out the desorption, produce harmful effects to the separation effect, must effectually deviate from ore pulp and mineral surface adsorption's medicament before the separation, prepare good ore pulp environment for the high-efficient separation of copper lead mixed concentrate.

Description

Copper-lead mixed flotation concentrate flotation separation and pesticide removal system

Technical Field

The utility model relates to a copper-lead mix flotation concentrate flotation separation and drug removal system belongs to the ore dressing field, relates to flotation technical field.

Background

Mineral separation is to process raw ore extracted from mine, enrich useful minerals and discard useless gangue, the enriched useful minerals are called concentrate for smelting metal, and the gangue is discarded as tailings. The flotation is a mineral separation method for sorting according to the difference of the floatability of minerals according to the difference of the physicochemical properties of the surfaces of the mineral particles, and the physicochemical characteristics of the surfaces of various mineral particles and a flotation medium are adjusted by using various reagents so as to enlarge the difference of hydrophobicity-hydrophilicity (namely floatability) among various minerals and improve the flotation efficiency. The flotation process of the ore comprises three operations of ore pulp preparation, chemical adding adjustment and air flotation. In practical application, the flotation of ore pulp is a continuous process and comprises a plurality of flotation machines, the flotation machines are divided into a plurality of cycles according to ore characteristics, and each cycle comprises 1-2 rough concentration operations and a plurality of fine concentration and scavenging operations. The mixed flotation is to concentrate two or more element components into one product by flotation. Because the separation difficulty of the bulk concentrates in smelting is higher than that of the bulk concentrates in mineral separation, the production cost is high, and the indexes are poorer, the bulk concentrates are generally required to be separated in the mineral separation stage, because a large amount of surplus flotation reagents exist in the copper-lead bulk concentrates, the separation effect is often influenced badly, and because the floatability of copper and lead in the flotation is similar, the selectivity of the specific inhibitors of the copper and lead is also poor, and the copper and lead are difficult to separate. The removal of the chemicals in the separation process is an essential link, and aims to prepare an excellent ore pulp environment for the efficient separation of the copper-lead bulk concentrates. The conventional common pesticide removing method is summarized into a mechanical pesticide removing method, a chemical and physical chemical pesticide removing method and a special pesticide removing method, and the methods are used for the pesticide removing flotation separation of copper-lead bulk concentrates, some methods are incomplete in pesticide removing, high in flotation separation difficulty and large in inhibitor consumption; some of the methods have more equipment configuration, longer process flow and poorer production continuity; and the other methods are complex in process, high in cost and difficult to bear in mineral separation production. The concrete expression is as follows: the main function of the regrinding of the bulk concentrate is to dissociate the intergrowth monomers and remove only part of the medicament adsorbed on the surface of the mineral; the excessive medicament in the ore pulp can only be removed by adopting a thickener; the mixed concentrate is concentrated and filtered, and water is sprayed on a filter for washing, but the method has large washing water consumption, large water amount to be treated and complex process; the sulfide ore method is characterized in that sodium sulfide is used for desorbing a collecting agent on the surface of the ore, and then excessive sodium sulfide is removed through concentration and filtration, so that the removal of the chemical is relatively thorough, but the method has large sodium sulfide consumption and needs more chemical removal equipment; the active carbon medicine removing method is to remove the excessive medicine on the surface of mineral and in the ore pulp by utilizing the huge adsorption performance of the active carbon, but the medicine removing method is not complete; the special method for removing the pesticide comprises heating, roasting and steam blowing, but the methods are complex and high in cost. In a word, because the existing pesticide removing process has the defects, the separation effect of the copper-lead bulk flotation concentrate is poor, the grades and the recovery rates of the copper concentrate and the lead concentrate are low, the stability of the production process is poor, the production cost is high, the economic efficiency of the beneficiation technology is difficult to be effectively exerted, the economic utilization in the beneficiation stage is damaged, and in order to overcome the defects, the copper-lead bulk flotation concentrate separation and pesticide removing system which is simple in configuration, easy to control and high in efficiency is provided.

SUMMERY OF THE UTILITY MODEL

Because a large amount of surplus flotation agents exist in the copper-lead bulk concentrate, the flotation agents have adverse effects on the separation effect, and the ore pulp and the agents adsorbed on the surface of minerals must be effectively removed before separation, so that an excellent ore pulp environment is prepared for efficient flotation and separation of the copper-lead bulk concentrate. Therefore, the copper-lead mixed flotation concentrate separation and reagent removal system is provided, and can remove a large amount of excessive flotation reagents existing in the copper-lead mixed flotation concentrate.

The specific technical scheme is as follows: a copper-lead mixed flotation concentrate flotation separation and reagent removal system comprises a mixing tank, wherein a stirrer is arranged in the mixing tank, a thickener, a preparation barrel and an active carbon storage tank are arranged above the mixing tank, and discharge ports of the thickener and the preparation barrel are connected with the mixing tank through pipelines; the activated carbon storage tank is connected with the upper end of the mixing tank through a spiral feeder; the lower part of the mixing tank is connected with a feed inlet of the medicine-removing stirring tank through a pump; the preparation barrel and the medicine-removing stirring tank are provided with a stirrer; valves are arranged on the pipelines of the thickener, the preparation barrel and the mixing tank, and valves are arranged on the pipelines of the active carbon storage tank and the spiral feeder.

Further, the stirred tank of taking off the medicine has more than two, and the stirred tank of taking off the medicine more than two is established ties, and the mixed tank lower part is taken off the medicine stirred tank feed inlet through pump and first order promptly and is connected, and the first order is taken off the medicine stirred tank overflow mouth and is taken off the medicine stirred tank feed inlet through pipeline next stage and connect.

Further, the agitator includes stirring rake and motor, and the stirring rake is by motor drive, and the motor setting is on preparing the bucket or taking off the medicine stirred tank, and the stirring rake stretches into and prepares in the bucket or takes off the medicine stirred tank.

The specific medicine removing method comprises the following steps:

(1) concentrating the copper-lead ore pulp to 60-70% by using a thickener;

(2) adding copper-lead ore pulp into an ore pulp mixing tank through a bottom ball valve according to the treatment capacity;

(3) adding powdered activated carbon and sodium sulfide into an ore pulp mixing tank according to a dry material ratio, and mixing with copper-lead ore pulp;

(4) conveying the copper-lead mixed ore pulp subjected to the step (3) to a No. 1 stirring and pesticide removing barrel by using an ore pulp pump for treatment for 5-10 minutes;

(5) conveying the copper-lead ore pulp subjected to the step (4) to a No. 2 stirring and pesticide removing barrel for further treatment for 5-10 minutes;

(6) and (5) conveying the copper-lead ore pulp subjected to the step (5) to a copper-lead separation inhibition stirring barrel for treatment for 3 minutes.

The utility model discloses can be to there being a large amount of surplus flotation reagents in the copper lead mixed flotation concentrate and carry out the desorption, produce harmful effects to the separation effect, must effectually deviate from ore pulp and mineral surface adsorption's medicament before the separation, prepare good ore pulp environment for the high-efficient separation of copper lead mixed concentrate.

Compared with the prior method, has the advantages and positive effects

(1) The efficiency of removing the chemicals is high, and the residual medicament in the ore pulp is low;

(2) the dosage of the copper or lead inhibitor is reduced, and the cost of the medicament is reduced;

(3) the copper-lead separation effect is greatly improved;

(4) the copper and lead grades and the recovery rate are improved;

(5) the process stability, the production continuity and the easy controllability are greatly improved.

Drawings

FIG. 1 is a connection diagram of a copper-lead flotation concentrate separation and reagent removal system;

wherein, 1: a thickener; 2: a mixing tank; 3: a preparation barrel (sodium sulfide preparation barrel); 4, a stirrer; 5: an activated carbon storage tank; 6: a screw feeder; 7: a pump; 8: a No. 1 pesticide-removing stirring tank; 9: 2# pesticide-removing stirring tank; 10: and a medicine removal inhibiting stirring tank.

Detailed Description

The copper-lead mixed flotation concentrate flotation separation and reagent removal system shown in fig. 1 comprises a mixing tank 2, wherein a stirrer 4 is arranged in the mixing tank 2, a thickener 1, a preparation barrel 3 and an active carbon storage tank 5 are arranged above the mixing tank 2, and discharge ports of the thickener 1 and the preparation barrel 3 are connected with the mixing tank 2 through pipelines; the activated carbon storage tank 5 is connected with the upper end of the mixing tank 2 through a screw feeder 6; the lower part of the mixing tank 2 is connected with a feed inlet of the medicine removing and stirring tank through a pump 7; the preparation barrel 3 and the medicine-removing stirring tank are provided with a stirrer 4; valves are arranged on the pipelines connecting the thickener 1, the preparation barrel 3 and the mixing tank 2, and valves are arranged on the pipelines connecting the active carbon storage tank 5 and the screw feeder 6.

Further, agitator 4 includes stirring rake and motor, and the stirring rake is by motor drive, and the motor setting is on preparing the bucket or taking off the medicine stirred tank, and the stirring rake stretches into and prepares in the bucket or takes off the medicine stirred tank.

Examples

(1) The copper-lead ore pulp is concentrated to 60-70% by adopting a thickener 1, and the removal of the pesticide is carried out under the condition of high concentration, so that the dosage of the removal of the pesticide is greatly reduced;

(2) adding powdered activated carbon and sodium sulfide into the ore pulp mixing tank 2 according to the proportion of dry materials, mixing with the copper-lead ore pulp, and then stirring strongly to mix the materials uniformly. In the mixing process, the adding position of the powdered activated carbon is as close to the stirring shaft as possible, otherwise the powdered activated carbon is easy to float on the surface of ore pulp, the stirring is not uniform, the using amounts of the powdered activated carbon and sodium sulfide are strictly controlled, the using amount is too small, a medicament is difficult to completely remove, the using amount is too large, the using amounts of a collecting agent and a foaming agent in the subsequent flotation separation link are increased, the production cost is increased, the using amount of the powdered activated carbon is 3000 g/t-4500 g/t, and the using amount of the sodium sulfide is 1200 g/t-2500 g/t;

(3) conveying the copper-lead mixed ore pulp subjected to the step (3) to a No. 1 stirring and pesticide removing barrel for treatment for 5-10 minutes by using an ore pulp pump, then conveying the ore pulp to a No. 2 stirring and pesticide removing barrel for treatment for 5-10 minutes, and performing two-stage pesticide removing to avoid short circuit of the ore pulp in a dynamic pesticide removing process;

(4) then the copper-lead ore pulp which is finished by the step (4) is conveyed to a copper-lead separation inhibition stirring barrel for treatment for 3 minutes, in the process, the inhibitor can further remove the collecting agent which is difficult to desorb on the surface of the copper sulfide, and is adsorbed on the surface of the copper sulfide for selective inhibition,

(5) through multi-section high-concentration progressive chemical removal, the original chemical in the copper-lead ore pulp is completely removed, and the separation effect is greatly improved.

In this way, the following effects can be achieved:

concentrating the copper-lead ore pulp to 60-70% by using a thickener, and performing high-concentration removal; the concentration of the pesticide removing agent is improved, the pesticide removing effect is improved, and the consumption of the pesticide is reduced. Powdered activated carbon and sodium sulfide are synchronously added for combined removal of the medicine. The chemicals in the ore pulp are thoroughly removed through the synergistic effect; the 1# stirring barrel and the 2# stirring barrel are adopted for step-by-step pesticide removal, so that a good pesticide removal effect can be achieved.

Claims

1. A copper-lead mixed flotation concentrate flotation separation and reagent removal system is characterized by comprising a mixing tank, wherein a stirrer is arranged in the mixing tank, a thickener, a preparation barrel and an active carbon storage tank are arranged above the mixing tank, and a discharge port of the thickener and a discharge port of the preparation barrel are connected with the mixing tank through a pipeline;

the activated carbon storage tank is connected with the upper end of the mixing tank through a spiral feeder;

the lower part of the mixing tank is connected with a feed inlet of the medicine-removing stirring tank through a pump;

the preparation barrel and the medicine-removing stirring tank are provided with a stirrer;

valves are arranged on the pipelines of the thickener, the preparation barrel and the mixing tank, and valves are arranged on the pipelines of the active carbon storage tank and the spiral feeder.

2. The copper-lead mixed flotation concentrate flotation separation and reagent removal system according to claim 1, characterized in that more than two reagent removal stirring tanks are connected in series, namely, the lower part of the mixing tank is connected with the feed inlet of the first reagent removal stirring tank through a pump, and the overflow port of the first reagent removal stirring tank is connected with the feed inlet of the next reagent removal stirring tank through a pipeline.

3. The copper-lead mixed flotation concentrate flotation separation and pesticide removal system as claimed in claim 1, wherein the stirrer comprises a stirring paddle and a motor, the stirring paddle is driven by the motor, the motor is arranged on the preparation barrel or the pesticide removal stirring tank, and the stirring paddle extends into the preparation barrel or the pesticide removal stirring tank.