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Method for separating and recovering sulfur and arsenic from sulfur and arsenic containing materials

A technology for separation and recovery of materials, applied in magnetic separation, solid separation, chemical instruments and methods, etc., can solve problems such as difficult separation of sulfur-containing and arsenic minerals, and achieve good economic benefits, good separation effects, and high resource utilization. Effect

Inactive Publication Date: 2011-11-16
厦门紫金矿冶技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The main purpose of the present invention is to overcome the disadvantages of difficult separation of sulfur and arsenic minerals in the prior art, and provide a method for effectively separating and recovering sulfur and arsenic from materials containing sulfur and arsenic

Method used

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  • Method for separating and recovering sulfur and arsenic from sulfur and arsenic containing materials
  • Method for separating and recovering sulfur and arsenic from sulfur and arsenic containing materials
  • Method for separating and recovering sulfur and arsenic from sulfur and arsenic containing materials

Examples

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Embodiment 1

[0034] Adopt the method of the present invention to carry out sulfur, arsenic separation test research on the tailings of a gold-lead-zinc polymetallic mine in Tongling, Anhui Province, the sulfur and arsenic minerals contained in the tailings are pyrrhotite, pyrite and arsenopyrite, and the others are Some gangue minerals such as carbonate and quartz etc. Among the three minerals, pyrrhotite has the highest content, followed by arsenopyrite and pyrite. Gold is mainly fine-grained gold, distributed in all three minerals, but higher in arsenopyrite. The specific multi-element analysis of the tailings is shown in Table 1.

[0035] Table 1 Tailings multi-element analysis results / %

[0036]

[0037] *g / t

[0038] As can be seen from the data in Table 1, the recyclable elements of the tailings are S, As, and Au. According to the properties of the raw ore, the floating-magnetic combined process of the present invention is adopted. The specific process flow is shown in figure ...

Embodiment 2

[0052] The mixed concentrate of sulfur and arsenic selected from a polymetallic mine in Tongling, Anhui has too high arsenic content to be sold as sulfur concentrate, and separation of sulfur and arsenic is required. It is proposed to use the method of the present invention to separate sulfur and arsenic to obtain qualified sulfur and arsenic. concentrates and arsenic concentrates for sale. The minerals contained in the sulfur and arsenic mixed concentrate mainly include pyrrhotite, pyrite, arsenopyrite and a small amount of gangue minerals. The specific multi-element analysis is shown in Table 3. .

[0053] Table 3 Multi-element analysis results of sulfur arsenic concentrate / %

[0054]

[0055] *g / t

[0056] From the data in Table 3, it can be seen that the recoverable elements of the tailings are S, Fe, As, and Au, and the gold is mainly fine-grained gold, which is scattered and distributed in pyrrhotite, pyrite, and arsenopyrite. , but its content is higher in arsenop...

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Abstract

The invention relates to a method for separating and recovering sulfur and arsenic from sulfur and arsenic containing materials, comprising the following steps of: firstly inhibiting arsenopyrite and pyrrhotite by adopting an inhibitor to obtain sulfur ores a mainly containing pyrites through floatation; and then separating the pyrrhotite and the arsenopyrite from flotation tailings by adopting magnetic separation so as to obtain arsenic ores and sulfur ores b mainly containing the pyrrhotite. Compared with the prior art, the method provided by the invention has the advantages of simple process, effectiveness for separation and recovery of the sulfur and the arsenic, good economic benefit and higher popularization value.

Description

technical field [0001] The invention relates to the field of mineral processing, in particular to a method for separating and recovering sulfur and arsenic from materials containing sulfur and arsenic. Background technique [0002] In my country, non-ferrous metal deposits (tungsten, tin, copper, lead, zinc, antimony, mercury, etc.) Sulfides such as ore and pyrrhotite are closely symbiotic with precious metals gold and silver. [0003] Although arsenic is abundant in reserves and has important uses in industries such as metallurgy, semiconductors, and light-related materials, as well as in medicine and agriculture, the recovery of associated arsenic is currently very limited. The arsenic that is associated with metal ore deposits and has not been effectively separated is a harmful impurity in the post-processing of various concentrates and products. When high-arsenic pyrite is used to make acid, arsenic will poison the catalyst and form arsenic oxide crystals, which will red...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03C1/00
Inventor 黄怀国赖伟强石仑雷马龙张保丰黄思捷
Owner 厦门紫金矿冶技术有限公司
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