钠盐强化红土酸性岩中镍的选择性硫化作用

IF 4.9 2区工程技术 Q1 ENGINEERING, CHEMICAL

Minerals Engineering Pub Date : 2024-10-10 DOI:10.1016/j.mineng.2024.109022

Chen Li, Wei Liu, Fen Jiao, Tianfu Zhang, Junwei Han, Wenqing Qin

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引用次数: 0

摘要

硫化镍精矿是生产电池级硫酸镍的重要原料。为了有效地从红土镍矿中分离出镍，生产出硫化镍精矿，本文提出了一种新型、清洁的硫化-浮选工艺，旨在通过碳酸钠增强选择性硫化和颗粒生长。系统研究了温度、时间、硫剂量、Na 盐和碳添加量对镍选择性硫化的影响。实验结果表明，碳酸钠能破坏硅酸盐结构，释放硅酸盐中的镍，并形成低熔点相，促进硫化镍的聚集，从而达到促进镍的硫化和合成镍锍颗粒生长的目的。在最佳条件下，可硫化 85.7% 的镍和 27.1% 的铁。

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Intensifying the selective sulfidation of nickel in saprolitic laterites by sodium salts

Nickel sulfide concentrate was an important raw material for battery-grade nickel sulfate. To efficiently separate nickel from saprolitic laterite to product nickel sulfide concentrate, a novel and clean sulfidation-flotation process aimed to enhance selective sulfidation and particle growth through sodium carbonate was proposed herein. The effects of temperature, time, sulfur dosage, Na salts, and carbon additions on the selective sulfidation of nickel are systematically studied. Experimental results show that sodium carbonate can destroy the silicate structure, release nickel in the silicate, and form a low-melting point phase, promoting the aggregation of nickel sulfide, thereby achieving the purpose of promoting the sulfidation of nickel and the growth of synthetic nickel matte particles. Under the optimal conditions, 85.7% Ni and 27.1% Fe could be sulfated.

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来源期刊

Minerals Engineering 工程技术-工程：化工

CiteScore

8.70

自引率

18.80%

发文量

519

审稿时长

81 days

期刊介绍： The purpose of the journal is to provide for the rapid publication of topical papers featuring the latest developments in the allied fields of mineral processing and extractive metallurgy. Its wide ranging coverage of research and practical (operating) topics includes physical separation methods, such as comminution, flotation concentration and dewatering, chemical methods such as bio-, hydro-, and electro-metallurgy, analytical techniques, process control, simulation and instrumentation, and mineralogical aspects of processing. Environmental issues, particularly those pertaining to sustainable development, will also be strongly covered.