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A kind of beneficiation method of low-grade copper-nickel sulfide ore

A technology of copper-nickel sulfide ore and beneficiation method, which is applied in chemical instruments and methods, flotation, wet separation, etc., can solve the problems of reducing the recovery rate of copper-nickel minerals, the effect of floating of copper-nickel minerals, and the number of additions, etc. Excellent hydrophobicity and adhesion, excellent collection performance, effect of reducing dosage

Active Publication Date: 2022-02-15
NANHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the inhibitors added by this method can inhibit the gangue minerals, the number of additions is relatively large, and the overall addition amount is relatively large, which will affect the floating of copper-nickel minerals, so that part of the copper-nickel minerals will float with the gangue. Minerals enter the tailings, reducing the recovery rate of copper nickel minerals

Method used

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  • A kind of beneficiation method of low-grade copper-nickel sulfide ore
  • A kind of beneficiation method of low-grade copper-nickel sulfide ore
  • A kind of beneficiation method of low-grade copper-nickel sulfide ore

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preparation example Construction

[0042] The preparation method of described superhydrophobic polyurethane nanoparticle comprises the steps:

[0043] (1) Add toluene diisocyanate and catalyst dibutyltin dilaurate to polypropylene glycol, and react at 80° C. for 1 hour, then add chain extender hydroxyl silicone oil, and continue to react for 2 hours to prepare silicone-modified polyurethane;

[0044] (2) Nano-SiO 2 and the organosilicon-modified polyurethane were respectively placed in the solvent ethyl acetate, and after ultrasonic dispersion for 1 h, the nano-SiO 2 The dispersion liquid and the polyurethane dispersion liquid were uniformly mixed, and then ultrasonically dispersed for 0.5 h to obtain superhydrophobic polyurethane nanoparticles.

[0045] In step S4, the addition amount of the collector in the first-stage sweeping is 40g / t, the addition amount of the collector in the first-stage refining is 30g / t, and the addition of the inhibitor The amount is 50g / t.

[0046] In step S5, the content of parti...

Embodiment 1

[0049] The present embodiment provides a kind of beneficiation method of low-grade copper-nickel sulfide ore, comprising the following steps:

[0050] S1. Carry out primary grinding on the raw ore, so that the particle content of -74μm fineness after grinding is greater than 65%, and add water to adjust the pulp to a pulp concentration of 30%, and then add 500g / t of sodium carbonate to the obtained pulp As a regulator, stir for 3 minutes to adjust the slurry;

[0051] S2, adding 13g / t foaming agent to the pulp obtained in step S1 for desliming, the foaming agent is a mixture of terpineol oil and dodecylamine, wherein the mass ratio of terpineol oil to dodecylamine is 1 :2;

[0052] S3. Add 80g / t of copper sulfate to the deslimed pulp as an activator, add 70g / t of superhydrophobic polyurethane nanoparticles as a collector after stirring for 3 minutes, and add 100g / t of carboxymethyl after stirring for 3 minutes Sodium cellulose is used as an inhibitor to conduct primary rough...

Embodiment 2～5 and comparative example 1

[0064] Embodiment 2~5 and comparative example 1 provide a kind of beneficiation method of low-grade copper-nickel sulfide ore respectively, compared with embodiment 1, the difference of embodiment 2~5 is to change the foaming agent in step S2 The mass ratio of terpineol oil and dodecylamine in addition amount or foaming agent; The difference of comparative example 1 is that only contains pine alcohol oil in the foaming agent used in step S2; Embodiment 2~5 and comparative example 1 correspond The relevant parameters are shown in Table 2.

[0065] Relevant parameters in table 2 embodiment 2~5 and comparative example 1

[0066] Example Amount of foaming agent added (g / t) Mass ratio of terpineol oil to dodecylamine Example 2 10 1:2 Example 3 15 1:2 Example 4 13 1:3 Example 5 13 1:1 Comparative example 1 13 1:0

[0067] The minerals obtained in Examples 2 to 5 and Comparative Example 1 were detected, and the indicators for the ...

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Abstract

The invention discloses a beneficiation method of low-grade copper-nickel sulfide ore. By setting two-stage grinding and flotation, a roughing, a sweeping and a beneficiation are carried out after the primary grinding to obtain a primary mixed concentrate. ore and first-grade tailings; and then carry out secondary grinding after the first-grade tailings cyclone classification, and carry out one roughing, three times of sweeping and two beneficiaries to obtain the second-grade mixed concentrate and the second-grade tailings ore; the copper-nickel mixed concentrate is obtained after mixing the primary mixed concentrate and the secondary mixed concentrate. At the same time, the present invention also adopts a mixture of pine alcohol oil and dodecylamine as a foaming agent, and prepares superhydrophobic polyurethane nanoparticles as a collector, thereby effectively removing gangue minerals and strengthening the flotation effect of copper-nickel minerals , Improve the grade and recovery rate of copper-nickel mixed concentrate. Through the above method, the ore dressing method provided by the present invention can effectively separate low-grade copper-nickel sulfide ore, and has less chemical usage and strong controllability, which can meet actual needs.

Description

technical field [0001] The invention relates to the technical field of beneficiation methods, in particular to a beneficiation method of low-grade copper-nickel sulfide ore. Background technique [0002] With the rapid development of the national economy, people's demand for copper and nickel is increasing, which drives the development and utilization of corresponding ore resources. Copper-nickel sulfide ore, as the main nickel deposit, has become poorer, finer, and hybridized under continuous and in-depth mining. Problems such as low ore grade, fine embedded particle size, and high impurity content make the beneficiation of copper-nickel sulfide ore more and more difficult. , the traditional beneficiation method has been difficult to effectively separate a large number of low-grade copper-nickel sulfide ores. Therefore, the development of beneficiation methods for low-grade copper-nickel sulfide ore is of great significance to improve the utilization rate of mineral resour...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B9/00B03D1/00B03B1/00B03B5/34B03D1/01B03D101/04B03D101/02B03D103/02
CPCB03B9/00B03D1/00B03B1/00B03B5/34B03D1/01B03D2201/04B03D2201/02B03D2203/02
Inventor 戴兵张雷陈英贺桂成
Owner NANHUA UNIV
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