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Separation method for laterite nickel ore

A technology of laterite nickel ore and beneficiation method, applied in flotation, solid separation and other directions, can solve the problems of unsatisfactory flotation effect, low grade of nickel-iron concentrate, low beneficiation efficiency, etc. The effect of improving beneficiation efficiency and grade

Active Publication Date: 2017-06-13
GANSU GOLDEN PIED MONTAND SILVER PEAKS (GPASP) METALLURGICL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the current beneficiation efficiency of laterite nickel ore is low, the flotation effect in the beneficiation process is not ideal, and the grade of ferronickel concentrate obtained after beneficiation is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of beneficiation method of laterite nickel ore, comprises the following steps:

[0032] (1) Ore washing and screening: transport the low-grade laterite nickel ore to the vibrating screen for vibrating screening, and at the same time connect the water pipe to the top of the vibrating screen to screen and clean the laterite nickel ore at the same time. The under-sieve after separation is the under-sieve fine minerals, soil, impurities, etc., so the under-sieve fine minerals are further cleaned, and the sieved and cleaned over-sieves and under-sieve fine minerals are dried or dried before use. ;

[0033] (2) Crushing: crush the cleaned low-grade laterite-nickel ore on the sieve, first use a jaw crusher to crush the low-grade laterite-nickel ore to 30 mm, and then use a cone crusher to crush to 8 mm;

[0034] (3) Grinding: combine the crushed laterite nickel ore with the under-screen fine minerals obtained after sieving and cleaning, and send them into a ball mill f...

Embodiment 2

[0043] A kind of beneficiation method of laterite nickel ore, comprises the following steps:

[0044] (1) Ore washing and screening: transport the low-grade laterite nickel ore to the vibrating screen for vibrating screening, and at the same time connect the water pipe to the top of the vibrating screen to screen and clean the laterite nickel ore at the same time. The under-sieve after separation is the under-sieve fine minerals, soil, impurities, etc., so the under-sieve fine minerals are further cleaned, and the sieved and cleaned over-sieves and under-sieve fine minerals are dried or dried before use. ;

[0045] (2) Crushing: crush the cleaned low-grade laterite-nickel ore on the sieve, first use a jaw crusher to crush the low-grade laterite-nickel ore to 100 mm, and then use a cone crusher to crush to 15 mm;

[0046] (3) Grinding: combine the crushed laterite nickel ore with the under-screen fine minerals obtained after sieving and cleaning, and send them into a ball mill f...

Embodiment 3

[0051] A kind of beneficiation method of laterite nickel ore, comprises the following steps:

[0052] (1) Ore washing and screening: transport the low-grade laterite nickel ore to the vibrating screen for vibrating screening, and at the same time connect the water pipe to the top of the vibrating screen to screen and clean the laterite nickel ore at the same time. The under-sieve after separation is the under-sieve fine minerals, soil, impurities, etc., so the under-sieve fine minerals are further cleaned, and the sieved and cleaned over-sieves and under-sieve fine minerals are dried or dried before use. ;

[0053] (2) Crushing: crush the cleaned low-grade laterite-nickel ore sieve, first use a jaw crusher to crush the low-grade laterite-nickel ore to 50 mm, and then use a cone crusher to crush to 10 mm;

[0054] (3) Grinding: combine the crushed laterite nickel ore with the under-screen fine minerals obtained after sieving and cleaning, and send them into a ball mill for bal...

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Abstract

The invention discloses a separation method for laterite nickel ore and belongs to the technical field of separation. The method comprises the steps as follows: (1) ore washing and screening: screening and cleaning are performed on low-grade laterite nickel ore simultaneously; (2) crushing: cleaned low-grade laterite nickel ore oversize products are crushed; (3) ore grinding: crushed laterite nickel ore and undersize fine minerals obtained after screening and cleaning are ball-milled; (4) roasting: ball-milled fine minerals and undersize fine minerals obtained after screening and cleaning are mixed and are roasted in the inert atmosphere, and natural cooling to the room temperature is realized after roasting is completed; (5) flotation: water is added to fine minerals obtained after reducing roasting, ore pulp is prepared, then a regulator, a foaming agent and a collecting agent are added to the ore pulp, stirring, coarse flotation and fine flotation are performed, and foam products obtained through fine flotation are nickel iron concentrate. With the method, the separation efficiency can be improved, and the high-grade nickel iron concentrate can be obtained.

Description

technical field [0001] The invention relates to the technical field of beneficiation, in particular to a beneficiation method of laterite nickel ore. Background technique [0002] With the development of the economy, the demand for nickel continues to increase. Laterite nickel ore has attracted much attention due to its rich resources and the ability to produce intermediate products such as nickel oxide, sulfur nickel, and iron nickel. Among them, sulfur nickel and nickel oxide can be used by nickel refineries to solve the problem of insufficient nickel sulfide raw materials; iron nickel is more convenient to manufacture stainless steel and reduce production costs. However, the current beneficiation efficiency of lateritic nickel ore is low, the flotation effect in the beneficiation process is not ideal, and the grade of ferronickel concentrate obtained after beneficiation is low. [0003] Frothing agent is one of the main reagents for ore flotation. The research shows th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02B03D1/08B03D1/012B03B1/00B03D101/04B03D101/02B03D103/04
CPCB03B1/00B03D1/012B03D1/02B03D1/08B03D1/082B03D1/087B03D2201/02B03D2201/04B03D2203/04
Inventor 陆志斌
Owner GANSU GOLDEN PIED MONTAND SILVER PEAKS (GPASP) METALLURGICL TECH CO LTD
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