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Composite additive for reinforcing nickel laterite ore briquette and preparation method and application thereof

A composite additive, laterite nickel ore technology, applied in the fields of metallurgy and material science, can solve problems such as no solutions, and achieve the effects of improving reduction efficiency, enhancing reducing atmosphere, and enhancing cohesion

Active Publication Date: 2017-10-24
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the problems described in the related art, no effective solution has been proposed yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A composite additive of the present invention comprises 64wt% of anthracite, 20wt% of limestone, 8wt% of sodium humate, and 8wt% of water glass.

[0038] A method for preparing the composite additive of this embodiment, the preparation method is as follows: after weighing and mixing anthracite, sodium humate and limestone according to the above mass ratio to obtain a mixture, add water glass separately.

[0039] A kind of application of composite additive of this embodiment in laterite nickel ore briquette, specific application method comprises the following steps:

[0040] (1) Mix the laterite nickel ore and the composite additive in a mixer with a speed of 17r / min for 3 minutes at a mass ratio of 1:0.25. Then 8 wt% water was added and mixing was continued for 3 minutes.

[0041] (2) Put the above-mentioned mixed material into the material box of the double-roll compactor, and press it under a pressure of 60 MPa to obtain laterite nickel ore agglomerates.

[0042] Th...

Embodiment 2

[0047] A composite additive of the present invention comprises 64wt% of anthracite, 20wt% of limestone, 8wt% of sodium humate, and 8wt% of water glass.

[0048] A method for preparing the composite additive of this embodiment, the preparation method is as follows: after weighing and mixing anthracite, sodium humate and limestone according to the above mass ratio to obtain a mixture, add water glass separately.

[0049] A kind of application of composite additive of this embodiment in laterite nickel ore briquette, specific application method comprises the following steps:

[0050] (1) Mix laterite nickel ore and composite additives in a mixer with a speed of 17r / min for 3 minutes at a mass ratio of 1:0.20. Then 8 wt% water was added and mixing was continued for 3 minutes.

[0051] (2) Put the above-mentioned mixed material into the material box of the double-roller briquetting machine, and press it under a pressure of 60MPa to obtain laterite nickel ore agglomerates;

[0052...

Embodiment 3

[0057] A composite additive of the present invention comprises 64wt% of anthracite, 20wt% of limestone, 8wt% of sodium humate, and 8wt% of water glass.

[0058] A method for preparing the composite additive of this embodiment, the preparation method is as follows: after weighing and mixing anthracite, sodium humate and limestone according to the above mass ratio to obtain a mixture, add water glass separately.

[0059] A kind of application of composite additive of this embodiment in laterite nickel ore briquette, specific application method comprises the following steps:

[0060] (1) Mix the laterite nickel ore and the composite additive in a mixer with a speed of 17r / min for 3 minutes at a mass ratio of 1:0.30. Then 8 wt% water was added and mixing was continued for 3 minutes.

[0061] (2) Put the above-mentioned mixed material into the material box of the double-roller briquetting machine, and press it under a pressure of 60MPa to obtain laterite nickel ore agglomerates; ...

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PUM

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Abstract

The invention provides a composite additive for reinforcing a nickel laterite ore briquette and a preparation method and application thereof. The composite additive comprises 5-10 wt% of water glass, 50-65 wt% of anthracite, 5-10 wt% of sodium humate and 10-30 wt% of limestone. The preparation method is to weigh and uniformly mix anthracite, sodium humate and limestone according to the mass ratios to obtain a mixture; and then, water glass is singly mixed. The composite additive can prominently improve the yield and the cold / hot-state strength of the nickel laterite ore briquette, and can be applied to the nickel laterite ore briquette.

Description

technical field [0001] The invention relates to the fields of metallurgy and material science and technology, in particular to a composite additive for strengthening laterite nickel ore briquetting and its preparation method and application. Background technique [0002] Nickel is an important strategic metal material, currently mainly used in stainless steel production. The main sources of metal nickel are nickel sulfide ore and laterite nickel ore, and the former is the main source. With the depletion and depletion of resources caused by the over-exploitation of nickel sulfide ore in the world, the focus of development and utilization of nickel resources has gradually shifted to laterite nickel ore. The processing technology of laterite nickel ore in China is mainly fire method, mainly including rotary kiln-electric furnace method (RKEF), sintering-blast furnace method and rotary kiln direct reduction-magnetic separation method, and shaft furnace-electric furnace method, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/245C22B1/243
CPCC22B1/2413C22B1/243C22B1/245
Inventor 朱德庆潘建李启厚郭正启师本敬李紫云梁钟仁张峰王颖钰徐梦杰刘新奇鲁胜虎石玥严欣程姚维杰
Owner CENT SOUTH UNIV
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