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Flotation method for high-content slip manganese rock type low-grade nickel ores

A low-grade nickel ore, high-content technology, applied in flotation, solid separation and other directions, can solve the problems of complex process, affecting nickel flotation index and metal recovery rate, low flotation recovery rate, etc. The effect of high rate and high efficiency flotation recovery

Inactive Publication Date: 2012-10-10
陕西煎茶岭镍业有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] Low-grade nickel ore is generally difficult to select, with complex process and low flotation recovery rate; especially low-grade nickel ore with high content of talcite, gangue minerals such as talc and serpentine in the ore have good buoyancy and fine The ore nickel grade is 3.5%-4.5%, and the nickel recovery rate is 68%-75%, which seriously affects the flotation index and metal recovery rate of nickel

Method used

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  • Flotation method for high-content slip manganese rock type low-grade nickel ores

Examples

Experimental program
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Effect test

Embodiment 1

[0056] see figure 1 , a method for flotation of high-content talcite-type low-grade nickel ore, including three continuous cycles of roughing, sweeping, and beneficiation, specifically including the following steps:

[0057] 1) The raw ore is crushed and screened, and then enters the grinding and grading operation. The fineness of the grinding product reaches -200 mesh 85%, and the pulp concentration is 30%. The dosage of each component of the combination agent is: sodium carboxymethylcellulose 200g / t, sodium hexametaphosphate 100g / t, amyl xanthate 100g / t, copper sulfate 50g / t, methyl isobutyl carbinol 50g / t The ore pulp with the combined agent is sent to the flotation machine for a roughing, and the roughing is carried out for 13 minutes, and the foam carrying the nickel ore out of the flotation is separated;

[0058] To the remaining tailings slurry, add combination inhibitors sodium carboxymethyl cellulose 150g / t, sodium hexametaphosphate 100g / t, amyl xanthate 50g / t, coppe...

Embodiment 2

[0067] A method for flotation of high-content talcite-type low-grade nickel ore, including three continuous cycles of roughing, sweeping, and beneficiation, specifically including the following steps:

[0068] 1) The raw ore is crushed and screened, and then enters the grinding and classification operation. The fineness of the grinding product reaches -200 mesh 86%, and the concentration of the pulp is 32%. While stirring the pulp, add a combination of chemicals for roughing; each ton of raw ore The dosage of each component of the combination agent is: sodium carboxymethylcellulose 600g / t, sodium hexametaphosphate 500g / t, sodium carbonate 350g / t; amyl xanthate 300g / t, copper sulfate 100g / t, methyl iso Butylmethanol 80g / t; the ore slurry added with the combined agent is sent to the flotation machine for a rough separation, and the rough separation lasts for 13 minutes to separate the foam carrying nickel ore from the flotation;

[0069] Add combined inhibitor carboxymethylcellu...

Embodiment 3

[0079] A method for flotation of high-content talcite-type low-grade nickel ore, including three continuous cycles of roughing, sweeping, and beneficiation, specifically including the following steps:

[0080] 1) The raw ore is crushed and screened, and then enters the grinding and grading operation. The fineness of the grinding product reaches -200 mesh 84%, and the concentration of the pulp is 31%. While stirring the pulp, add a combination of chemicals for roughing; each ton of raw ore The dosage of each component of the combination agent is: sodium carboxymethylcellulose 400g / t, sodium hexametaphosphate 300g / t, sodium carbonate 260g / t; amyl xanthate 310g / t, copper sulfate 150g / t, methyl iso Butylmethanol 80g / t; the ore slurry added with the combined agent is sent to the flotation machine for a rough separation, and the rough separation lasts for 13 minutes to separate the foam carrying nickel ore from the flotation;

[0081] Add 200g / t of sodium carboxymethyl cellulose, 15...

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Abstract

The invention discloses a flotation method for high-content slip manganese rock type low-grade nickel ores. The flotation method includes that raw ores are ground after being crushed, the fineness of 84-86% of ground products reaches -200 meshes, and the concentration of pulp ranges from 30% to 33%; the pulp is stirred while flotation combined reagent is added into the pulp; the flotation combined reagent comprises carboxymethyl cellulose salt, hexametaphosphate, a flotation regulator, a collector, an activator and a foaming agent; the pulp added with the combined reagent is fed into a flotation machine to be in closed cycle flotation, and flotation foams carrying the nickel ores are separated; and enriched nickel concentrations are obtained after combined reagents are added into the flotation foams to be in flotation by multiple times. Service effect show that by the aid of secondary flotation, tertiary scavenging and primary concentration technological flows, raw nickel ores with the grade ranging from 0.40% to 0.60% is in flotation by the flotation combined reagents to obtain the nickel concentrates with the grade ranging from 5.0% to 6.0%, nickel recovery rate ranges from 75% to 80%, accordingly, the high-content slip manganese rock type low-grade nickel ores are efficiently recovered in a flotation manner, the enrichment ratio of the concentrates is higher than 10, the technological processes are simple, and the flotation recovery rate is high.

Description

technical field [0001] The invention belongs to the technical field of flotation of low-grade nickel sulfide ore, and relates to a flotation method of high-content talcite-type low-grade nickel ore. Background technique [0002] Nickel resources include nickel sulfide ore, laterite nickel ore and nickel oxide ore and seabed manganese nodules. At present, nickel sulfide ore is mainly mined in the world. Due to the decrease of high-grade nickel ore, low-grade nickel sulfide ore has also attracted the attention of various countries. [0003] The countries in the world that process a large number of low-grade nickel sulfide ores are mainly Russia and Australia. At present, the world-recognized most advanced nickel beneficiation is the Manteken concentrator in Australia. The ore beneficiation index is 0.70% raw ore, and the recovery rate is about 72%. Russia's Rorilsk Nickel Company also processes a large amount of low-grade nickel ore, with a nickel grade of about 0.55% in th...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/018B03D1/004B03D1/006B03B1/04B03D101/02B03D101/04B03D1/06B03D103/02
Inventor 魏晔邱文琴彭先淦李明博
Owner 陕西煎茶岭镍业有限公司
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