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Pyrometallurgical method

一种高温、冶炼过程的技术，应用在金属矿的高温冶炼处理领域，能够解决不具有物理性质和化学性质、有价金属互溶性低、杂质粘度低等问题，达到降低职业健康和安全风险、降低浓度、增加浓度的效果

Active Publication Date: 2013-04-17
XSTRATA TECH PTY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of using silica as a flux is that the silicate slag generated in the furnace or crucible may not have the correct physical and chemical properties under certain conditions (such as low viscosity of impurities, high mutual solubility, valuable metals low miscibility)

Method used

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Examples

Experimental program
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Embodiment Construction

[0038] crucible test

[0039] The schematic diagram of the crucible test is shown in figure 1 .

[0040] Crucible tests were carried out with an opaque magnesia crucible 10 heated by a graphite heat susceptor 11 in an induction furnace. Vacuum cleaner 17 is used to discharge waste gas and flue gas into micro bag filter chamber 13 with filter 16 through steel flue 18, so that crucible top and chimney 12 are under slight negative pressure. The temperature of the contents of the crucible was measured with an 'R' type thermocouple 14 encapsulated in a magnesium sheath. Air 15 is used as oxidizing gas during blowing.

[0041] The top of the induction furnace was blanketed with nitrogen during sampling and / or aborts. The air flow rate is controlled by an electronic mass flow controller through an alumina nozzle 19 with an inner diameter of 3 mm or 5 mm.

[0042] The starting slag pool 21 used for the crucible test is calcium ferrite synthetic slag. In each test, the synthesiz...

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Abstract

A method for the pyrometallurgical processing of nickel-containing material using a fluxing composition comprising calcium.

Description

technical field [0001] The invention relates to a high-temperature smelting treatment method of metal ore. In particular, the invention relates to pyrometallurgical processes, including fluxing compounds, for continuous smelting and blowing of nickel ore. Background technique [0002] During pyrometallurgical processes such as smelting or converting metal ores or metal concentrates, fluxes are commonly used to help remove unwanted contaminants from the resulting metal or matte. In some smelting and converting systems such as nickel smelting or converting, silica-based fluxes are used to produce an iron silicate slag. [0003] The disadvantage of using silica as a flux is that the silicate slag generated in the furnace or crucible may not have the correct physical and chemical properties under certain conditions (such as low viscosity of impurities, high miscibility, valuable metals low solubility). This can lead to loss of valuable metals, to slag, impurities in the metal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B9/10C22B23/02C22B1/02C22B23/06
CPCC22B23/025C22B23/06Y02P10/20C22B23/00
Inventor 斯坦科·尼克里奇马丁·路易斯·班克杰拉多·劳尔·费尔南多·阿尔韦亚尔·弗洛勒斯
Owner XSTRATA TECH PTY LTD