Combined medicament removing agent and application thereof

Abstract

The invention provides a combined chemical removal agent and application. The combined chemical removal agent is composed of sodium sulfide, sodium hydrosulfide, calcium sulfide and activated carbon particles. According to the method, efficient separation flotation of the copper-molybdenum ore is achieved, the influence of reagents in the copper-molybdenum bulk flotation stage on rear-end copper-molybdenum separation is effectively avoided, and losses of copper and molybdenum resources are reduced; by the adoption of the combined reagent, the molybdenum grade can be improved by 4-6%, and the molybdenum recovery rate can be improved by 6-8% or above.

Description

Technical Field

[0001] This invention belongs to the field of mineral processing technology, specifically relating to a combined de-chemical agent and its application. Background Technology

[0002] Copper and molybdenum, as strategically important non-ferrous metal resources, are shining gems in the constellation of modern industry. They are not only the solid foundation for technological development but also the invisible wings of national defense and economic prosperity. my country possesses vast copper and molybdenum reserves, ranking among the world's largest. However, the current situation facing these resources includes complex occurrence states, low utilization rates of low-grade associated copper and molybdenum resources, and difficulties in recovering valuable minerals, severely impacting their efficient utilization. For copper-molybdenum separation, de-removal is crucial. De-removal methods before separation mainly include scrubbing, thickening, regrinding, and reagent addition. Typically, sodium sulfide or activated carbon are used for de-removal before separation. However, using only activated carbon or sodium sulfide for de-removal before separation does not yield ideal results for copper and molybdenum indicators. Therefore, research on de-removal reagents is of great significance for further in-depth research on key technologies for efficient copper-molybdenum resource recovery and the development of more advantageous new de-removal reagents before copper-molybdenum separation, thus improving the copper-molybdenum metal industry. Therefore, in order to improve the flotation efficiency of copper-molybdenum separation, it is urgent to develop a new type of highly efficient de-removing agent before copper-molybdenum separation, so as to achieve efficient separation and recovery of copper-molybdenum ore. Summary of the Invention

[0003] The first objective of this invention is to provide a combined de-drug agent; the second objective is to provide the application of the combined de-drug agent.

[0004] The first objective of this invention is achieved by the combination desiccant consisting of sodium sulfide, sodium hydrosulfide, calcium sulfide, and activated carbon particles.

[0005] The second objective of this invention is achieved through the application of the combined desiccant in the copper-molybdenum separation flotation process, specifically as follows: (1) A copper-molybdenum mixed concentrate has a slurry concentration of 45%, a Cu grade of 17%, and a Mo grade of 0.6%. First, a combined descaling agent is added to the stirring tank, and then the mixture is sieved through a 20-mesh sieve. The sieve is then subjected to flotation tests, and the slurry is adjusted to a slurry mass percentage concentration of 40%.

[0006] (2) Add 20 kg / t of sodium sulfide and 120 g / t of kerosene to the slurry under the screen in step (1) in sequence, and carry out one roughing operation to obtain copper-molybdenum separation roughing concentrate and copper-molybdenum separation roughing tailings; (3) Add 10 kg / t of sodium sulfide and 40 g / t of kerosene to the copper-molybdenum separation rough concentrate in step (2) and carry out a series of beneficiation I operations to obtain copper-molybdenum separation beneficiation I concentrate and copper-molybdenum separation beneficiation I tailings; (4) Add 5 kg / t of sodium sulfide and 20 g / t of kerosene to the copper-molybdenum separation and beneficiation I concentrate in step (3) and carry out a series of beneficiation II operations to obtain copper-molybdenum separation II concentrate and copper-molybdenum separation and beneficiation II tailings; (5) Add 4 kg / t of sodium sulfide and 10 g / t of kerosene to the copper-molybdenum separation and beneficiation II concentrate in step (4) and carry out a series of beneficiation III operations to obtain copper-molybdenum separation III concentrate and copper-molybdenum separation and beneficiation III tailings. (6) Add 2 kg / t of sodium sulfide and 0 g / t of kerosene to the copper-molybdenum separation and beneficiation III concentrate in step (5) and carry out a series of beneficiation IV operations to obtain copper-molybdenum separation IV concentrate and copper-molybdenum separation and beneficiation IV tailings. (7) Add 0 kg / t of sodium sulfide and 0 g / t of kerosene to the copper-molybdenum separation and beneficiation IV concentrate in step (6) and carry out a series of beneficiation V operations to obtain copper-molybdenum separation V concentrate and copper-molybdenum separation and beneficiation V tailings; (8) Add 10 kg / t of sodium sulfide and 100 g / t of kerosene to the copper-molybdenum separation roughing tailings in step (2) and carry out a series of scavenging operations I to obtain copper-molybdenum separation middlings 5 ​​and copper-molybdenum separation scavenging I tailings. (9) Add 6 kg / t of sodium sulfide and 50 g / t of kerosene to the tailings of the copper-molybdenum separation scavenging I step (8) and carry out a series of scavenging II operations to obtain copper-molybdenum separation middlings 6 and copper-molybdenum separation tailings.

[0007] The advantages and beneficial effects of this invention are as follows: 1. The combined de-removal agent of the present invention achieves efficient separation and flotation of copper-molybdenum ore, effectively solves the problem of the influence of reagents in the copper-molybdenum mixed flotation stage on the downstream copper-molybdenum separation, and reduces the loss of copper and molybdenum resources.

[0008] 2. This invention uses a combination of de-chemical agents, which enhances the effect of copper-molybdenum separation agents on copper-molybdenum separation, reduces the amount of copper-molybdenum separation agents used, and lowers the separation cost.

[0009] 3. In addition, compared with the untreated group, under the same reagent dosage, the use of this group of descaling agents can increase the molybdenum grade by 4 to 6 percentage points and the molybdenum recovery rate by more than 6 to 8%. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the flotation process for low-grade copper-molybdenum ore according to the present invention. Detailed Implementation

[0011] The present invention will be further described below with reference to embodiments, but this is not intended to limit the present invention in any way. Any modifications or substitutions made based on the teachings of the present invention shall fall within the protection scope of the present invention.

[0012] The combined desiccant of the present invention is composed of sodium sulfide, sodium hydrosulfide, calcium sulfide and activated carbon particles.

[0013] The mass ratio of sodium sulfide, sodium hydrosulfide, calcium sulfide and activated carbon particles is (0.5~1.5):(0.5~1.5):(0.5~1.5):(0.5~1.5).

[0014] The mass ratio of the trithiocarbonate, diethylaminohydroxybenzoyl benzoate, isopropyl xanthate, butyl xanthate, butyl black powder, and kerosene is 1:1:1:1.

[0015] The application of the combined desiccant described in this invention is its application in the copper-molybdenum separation flotation process.

[0016] The copper-molybdenum separation flotation includes pretreatment, roughing, and post-treatment steps, specifically including: A. Pretreatment: Add the combined desiccant to the copper-molybdenum mixed concentrate to be treated, sieve it through a 20-mesh sieve, and adjust the slurry to a slurry mass percentage concentration of 30-50% to obtain material a; B. Roughing: Sodium sulfide and kerosene are added to material a in sequence to carry out a roughing operation to obtain copper-molybdenum separation rough concentrate b and copper-molybdenum separation rough tailings c. C. Selected: 1) Add sodium sulfide and kerosene to the rough concentrate b of the copper-molybdenum separation in sequence to carry out the fine treatment I operation, and obtain the copper-molybdenum separation fine treatment I concentrate and the copper-molybdenum separation fine treatment I tailings. The copper-molybdenum separation fine treatment I tailings are returned to the previous step. 2) Add sodium sulfide and kerosene to the copper-molybdenum separation and beneficiation I concentrate in sequence to carry out beneficiation II operation, to obtain copper-molybdenum separation II concentrate and copper-molybdenum separation and beneficiation II tailings. The copper-molybdenum separation and beneficiation II tailings are returned to the previous step. 3) Add sodium sulfide and kerosene to the copper-molybdenum separation II concentrate in sequence to carry out the fine-refinement III operation, to obtain copper-molybdenum separation III concentrate and copper-molybdenum separation fine-refinement III tailings. Return the copper-molybdenum separation fine-refinement III tailings to the previous step. 4) Add sodium sulfide and kerosene to the copper-molybdenum separation III concentrate in sequence to carry out the IV fine treatment operation, to obtain copper-molybdenum separation IV concentrate and copper-molybdenum separation and fine treatment IV tailings. Return the copper-molybdenum separation and fine treatment IV tailings to the previous step. 5) Add sodium sulfide and kerosene to the copper-molybdenum separation IV concentrate in sequence to carry out the V fine treatment operation, and obtain copper-molybdenum separation V concentrate and copper-molybdenum separation V tailings. Return the copper-molybdenum separation V tailings to the previous step. D. Scan: 1) Add sodium sulfide and kerosene to the copper-molybdenum separation roughing tailings c in sequence to carry out scavenging operation I, to obtain copper-molybdenum separation scavenging I concentrate and copper-molybdenum separation scavenging I tailings. The copper-molybdenum separation scavenging I concentrate is returned to the previous step. 2) Add sodium sulfide and kerosene to the tailings of copper-molybdenum separation scavenging I in sequence to carry out scavenging II operation, to obtain copper-molybdenum separation scavenging II concentrate and copper-molybdenum separation scavenging II tailings. Return the copper-molybdenum separation scavenging II concentrate to the previous step.

[0017] The amount of the combined desiccant added in step A is 8~12g / t.

[0018] The invention will be further illustrated below with specific implementation examples: Example 1

[0019] (1) The copper-molybdenum mixed concentrate without the addition of combined descaling agents was slurried to a slurry mass percentage concentration of 40%. The Cu grade was 17% and the Mo grade was 0.6%. (2) Add 20 kg / t of sodium sulfide and 120 g / t of kerosene to the slurry under the screen in step (1) in sequence, and carry out one roughing operation to obtain copper-molybdenum separation roughing concentrate and copper-molybdenum separation roughing tailings; (3) Add 10 kg / t of sodium sulfide and 40 g / t of kerosene to the copper-molybdenum separation rough concentrate in step (2) and carry out a series of beneficiation I operations to obtain copper-molybdenum separation beneficiation I concentrate and copper-molybdenum separation beneficiation I tailings; (4) Add 5 kg / t of sodium sulfide and 20 g / t of kerosene to the copper-molybdenum separation and beneficiation I concentrate in step (3) and carry out a series of beneficiation II operations to obtain copper-molybdenum separation II concentrate and copper-molybdenum separation and beneficiation II tailings; (5) Add 4 kg / t of sodium sulfide and 10 g / t of kerosene to the copper-molybdenum separation and beneficiation II concentrate in step (4) and carry out a series of beneficiation III operations to obtain copper-molybdenum separation III concentrate and copper-molybdenum separation and beneficiation III tailings. (6) Add 2 kg / t of sodium sulfide and 0 g / t of kerosene to the copper-molybdenum separation and beneficiation III concentrate in step (5) and carry out a series of beneficiation IV operations to obtain copper-molybdenum separation IV concentrate and copper-molybdenum separation and beneficiation IV tailings. (7) Add 0 kg / t of sodium sulfide and 0 g / t of kerosene to the copper-molybdenum separation and beneficiation IV concentrate in step (6) and carry out a series of beneficiation V operations to obtain copper-molybdenum separation V concentrate and copper-molybdenum separation and beneficiation V tailings; (8) Add 10 kg / t of sodium sulfide and 100 g / t of kerosene to the copper-molybdenum separation roughing tailings in step (2) and carry out a series of scavenging operations I to obtain copper-molybdenum separation middlings 5 ​​and copper-molybdenum separation scavenging I tailings. (9) Add 6 kg / t of sodium sulfide and 50 g / t of kerosene to the tailings of the copper-molybdenum separation scavenging I step (8) and carry out a series of scavenging II operations to obtain copper-molybdenum separation middlings 6 and copper-molybdenum separation tailings.

[0020] In this embodiment, a copper-molybdenum separation concentrate with a molybdenum grade of 38% and a molybdenum recovery rate of 73% can be obtained. Example 2

[0021] (1) Add the combined desiccant to the mixing tank, then sieve it through a 20-mesh sieve. Perform flotation tests on the sieved material, and adjust the slurry to a mass percentage concentration of 40%. The Cu grade is 17% and the Mo grade is 0.6%. (2) Add 20 kg / t of sodium sulfide and 120 g / t of kerosene to the slurry under the screen in step (1) in sequence, and carry out one roughing operation to obtain copper-molybdenum separation roughing concentrate and copper-molybdenum separation roughing tailings; (3) Add 10 kg / t of sodium sulfide and 40 g / t of kerosene to the copper-molybdenum separation rough concentrate in step (2) and carry out a series of beneficiation I operations to obtain copper-molybdenum separation beneficiation I concentrate and copper-molybdenum separation beneficiation I tailings; (4) Add 5 kg / t of sodium sulfide and 20 g / t of kerosene to the copper-molybdenum separation and beneficiation I concentrate in step (3) and carry out a series of beneficiation II operations to obtain copper-molybdenum separation II concentrate and copper-molybdenum separation and beneficiation II tailings; (5) Add 4 kg / t of sodium sulfide and 10 g / t of kerosene to the copper-molybdenum separation and beneficiation II concentrate in step (4) and carry out a series of beneficiation III operations to obtain copper-molybdenum separation III concentrate and copper-molybdenum separation and beneficiation III tailings. (6) Add 2 kg / t of sodium sulfide and 0 g / t of kerosene to the copper-molybdenum separation and beneficiation III concentrate in step (5) and carry out a series of beneficiation IV operations to obtain copper-molybdenum separation IV concentrate and copper-molybdenum separation and beneficiation IV tailings. (7) Add 0 kg / t of sodium sulfide and 0 g / t of kerosene to the copper-molybdenum separation and beneficiation IV concentrate in step (6) and carry out a series of beneficiation V operations to obtain copper-molybdenum separation V concentrate and copper-molybdenum separation and beneficiation V tailings; (8) Add 10 kg / t of sodium sulfide and 100 g / t of kerosene to the copper-molybdenum separation roughing tailings in step (2) and carry out a series of scavenging operations I to obtain copper-molybdenum separation middlings 5 ​​and copper-molybdenum separation scavenging I tailings. (9) Add 6 kg / t of sodium sulfide and 50 g / t of kerosene to the tailings of the copper-molybdenum separation scavenging I step (8) and carry out a series of scavenging II operations to obtain copper-molybdenum separation middlings 6 and copper-molybdenum separation tailings.

[0022] Add 8 kg / t of combined desiccant to the mixing tank. The combined desiccant is a mixture of sodium sulfide, sodium hydrosulfide, calcium sulfide, and activated carbon particles in a 1:1:1:1 ratio.

[0023] In this embodiment, a copper-molybdenum separation concentrate with a molybdenum grade of 44% and a molybdenum recovery rate of 80% can be obtained.

Claims

1. A combined de-drug agent, characterized in that, The combined desiccant consists of sodium sulfide, sodium hydrosulfide, calcium sulfide, and activated carbon particles.

2. The combined de-drug agent according to claim 1, characterized in that, The mass ratio of sodium sulfide, sodium hydrosulfide, calcium sulfide and activated carbon particles is (0.5~1.5):(0.5~1.5):(0.5~1.5):(0.5~1.5).

3. The combined de-drug agent according to claim 1 or 2, characterized in that, The mass ratio of the trithiocarbonate, diethylaminohydroxybenzoyl benzoate, isopropyl xanthate, butyl xanthate, butyl black powder, and kerosene is 1:1:1:

1.

4. The application of the combined de-drug agent according to any one of claims 1 to 3, characterized in that, Application of the combined desiccant in the copper-molybdenum separation flotation process.

5. The application according to claim 4, characterized in that, The copper-molybdenum separation flotation includes pretreatment, roughing, and post-treatment steps, specifically including: A. Pretreatment: Add the combined desiccant to the copper-molybdenum mixed concentrate to be treated, sieve it through a 20-mesh sieve, and adjust the slurry to a slurry mass percentage concentration of 30-50% to obtain material a; B. Roughing: Sodium sulfide and kerosene are added to material a in sequence to carry out a roughing operation to obtain copper-molybdenum separation rough concentrate b and copper-molybdenum separation rough tailings c. C. Selected: 1) Add sodium sulfide and kerosene to the rough concentrate b of the copper-molybdenum separation in sequence to carry out the fine treatment I operation, and obtain the copper-molybdenum separation fine treatment I concentrate and the copper-molybdenum separation fine treatment I tailings. The copper-molybdenum separation fine treatment I tailings are returned to the previous step. 2) Add sodium sulfide and kerosene to the copper-molybdenum separation and beneficiation I concentrate in sequence to carry out beneficiation II operation, to obtain copper-molybdenum separation II concentrate and copper-molybdenum separation and beneficiation II tailings. The copper-molybdenum separation and beneficiation II tailings are returned to the previous step. 3) Add sodium sulfide and kerosene to the copper-molybdenum separation II concentrate in sequence to carry out the fine-refinement III operation, to obtain copper-molybdenum separation III concentrate and copper-molybdenum separation fine-refinement III tailings. Return the copper-molybdenum separation fine-refinement III tailings to the previous step. 4) Add sodium sulfide and kerosene to the copper-molybdenum separation III concentrate in sequence to carry out the IV fine treatment operation, to obtain copper-molybdenum separation IV concentrate and copper-molybdenum separation and fine treatment IV tailings. Return the copper-molybdenum separation and fine treatment IV tailings to the previous step. 5) Add sodium sulfide and kerosene to the copper-molybdenum separation IV concentrate in sequence to carry out the V fine treatment operation, and obtain copper-molybdenum separation V concentrate and copper-molybdenum separation V tailings. Return the copper-molybdenum separation V tailings to the previous step. D. Scan: 1) Add sodium sulfide and kerosene to the copper-molybdenum separation roughing tailings c in sequence to carry out scavenging operation I, to obtain copper-molybdenum separation scavenging I concentrate and copper-molybdenum separation scavenging I tailings. The copper-molybdenum separation scavenging I concentrate is returned to the previous step. 2) Add sodium sulfide and kerosene to the tailings of copper-molybdenum separation scavenging I in sequence to carry out scavenging II operation, to obtain copper-molybdenum separation scavenging II concentrate and copper-molybdenum separation scavenging II tailings. Return the copper-molybdenum separation scavenging II concentrate to the previous step.

6. The application according to claim 5, characterized in that, The amount of the combined desiccant added in step A is 8~12g / t.

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