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Method for preparing metal oxide composite material with polymetallic salt solution

A technology for polymetallic salts and composite materials, which is applied in the field of preparing metal oxide composite materials from polymetallic salt solutions, and can solve the problems of solution complexity, high metal concentration, and failure to achieve separation and purification.

Active Publication Date: 2019-09-20
东北大学秦皇岛分校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the process of processing low-grade nickel sulfide ore, nickel sulfide concentrate, low nickel matte and high nickel matte to extract valuable metals, these new processes produce a large amount of sulfuric acid containing nickel, copper, cobalt, iron, magnesium and other multi-metals Salt or chloride salt solution, due to the complexity of the solution and high metal concentration, effective separation and purification have not yet been achieved

Method used

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  • Method for preparing metal oxide composite material with polymetallic salt solution
  • Method for preparing metal oxide composite material with polymetallic salt solution
  • Method for preparing metal oxide composite material with polymetallic salt solution

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Embodiment 1

[0052] A method for preparing metal oxide composite materials from a polymetallic salt solution, which is to prepare iron oxide and metal oxide composite materials after removing iron from the polymetallic salt solution prepared by nickel sulfide roasting-water leaching, see figure 1 , including the following steps:

[0053] Step 1: Preparation of Polymetallic Salt Solution

[0054] Xinjiang low-grade nickel sulfide ore is crushed, ball milled, mixed with ammonium sulfate and sodium sulfate (according to mass ratio, ammonium sulfate: sodium sulfate = 1:1), roasted once, water leached and filtered to obtain more Metal sulfate solution, wherein, in polymetallic sulfate solution, nickel ion concentration is: 0.09mol / L, copper ion concentration is: 0.11mol / L, iron ion (comprising Fe 2+ and Fe 3+ , the total iron ion content is usually expressed as Fe 3+ Density meter) concentration: 1.6mol / L, magnesium ion concentration: 0.02mol / L.

[0055] Step 2: Add Precipitant to Prepare M...

Embodiment 2

[0058] A method for preparing a metal oxide composite material from a polymetallic salt solution, which is to prepare iron oxide and metal oxide composite materials from the polymetallic salt solution prepared by leaching and filtering nickel sulfide ore under pressure with sulfuric acid, see figure 1 , including the following steps:

[0059] Step 1: Preparation of Polymetallic Salt Solution

[0060] Jinchuan low-grade nickel sulfide ore is crushed, ball milled, mixed with sulfuric acid, leached under pressure at 1MPa, and filtered to obtain a polymetallic sulfate solution, wherein the concentration of nickel ions in the polymetallic sulfate solution is: 0.16mol / L, copper ion concentration: 0.09mol / L, iron ion concentration: 0.16mol / L, magnesium ion concentration: 0.44mol / L.

[0061] Step 2: Add Precipitant to Prepare Metal Oxide Composite

[0062] Heat the polymetallic sulphate solution to 60°C and under the condition of a stirring rate of 200r / min, add a precipitant ammon...

Embodiment 3

[0064] A method for preparing a metal oxide composite material from a polymetallic salt solution, which is a method for preparing a metal oxide composite material from a polymetallic salt solution prepared by nickel sulfide concentrate through sulphating roasting-water leaching. The process flow chart is shown in figure 1 ,Specific steps are as follows:

[0065] Step 1: Preparation of Polymetallic Salt Solution

[0066]Jinchuan low-grade nickel sulfide concentrate is crushed, ball milled, mixed with ammonium bisulfate and sodium sulfate (according to mass ratio, ammonium bisulfate: sodium sulfate = 1:1), and roasted once to obtain roasted clinker. The roasted clinker is subjected to secondary roasting to remove iron, water leaching, and filtration to obtain a polymetallic sulfate solution, wherein the concentration of nickel ions in the polymetallic sulfate solution is: 0.19mol / L, and the concentration of copper ions is: 0.13mol / L, Iron ion concentration: 0.009mol / L, magnesiu...

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Abstract

The invention discloses a method for preparing a metal oxide composite material with a polymetallic salt solution, and belongs to the technical field of copper-nickel sulfide type nickel ore smelting by-product utilization and metal oxide composite material preparation. The method includes the following steps: heating the polymetallic salt solution to 20-90 DEG C, stirring the solution at a stirring rate of 100-400 r / min, dropping a precipitating agent solution, performing a reaction at a constant temperature for 0.5-6 h, and performing solid-liquid separation to obtain an oxide precursor and a filtrate, wherein the amount of the precipitating agent solution is determined according to the type of a precipitating agent; and calcining the oxide precursor at 300-1000 DEG C for 0.5-6 h to obtain the metal oxide composite material. Moreover, according to a source of the polymetallic salt solution, the nature of the precipitating agent and the content of iron ions, the prepared metal oxide composite material can be adjusted. The method combines materials and metallurgical technology and has the advantages of short process flow, low cost and high metal utilization rate.

Description

technical field [0001] The invention relates to the technical field of utilization of copper-nickel sulfide-type nickel ore smelting by-products and preparation of metal oxide composite materials, in particular to a method for preparing metal oxide composite materials from a multi-metal salt solution. Background technique [0002] Sulfide-type nickel ore resources are the main resources for nickel production because of their good quality and mature smelting technology, which can provide nearly 2 / 3 of the world's nickel production. The sulfide-type nickel ores in China are mainly polymetallic co-associated copper-nickel sulfide ores, such as the Jinchuan nickel ore in Gansu and the Kalatongke nickel ore in Xinjiang. The composition is mainly metallic nickel, accompanied by copper, cobalt and precious metals (gold, silver and platinum group metals). In recent years, with the increasing demand for nickel in the world, high-grade sulfide-type nickel ore is gradually exhausted, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/00C01G53/04C01G49/00C01G3/02C01F5/02
CPCC01F5/02C01G3/02C01G49/0018C01G53/006C01G53/04C01P2004/82
Inventor 牟文宁崔富晖翟玉春辛海霞滕飞罗绍华
Owner 东北大学秦皇岛分校
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