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Process of preparing sodium cyanide and lead sulfide for gold ore sorting from waste sodium cyaide desulfurizing dreg

A technology for selecting gold sodium cyanide and desulfurization waste residue, which is applied in the field of preparation of gold sodium cyanide and lead sulfide from sodium cyanide desulfurization waste residue, can solve the problems that have not been reported in the literature, and achieve a simple and effective production process that is environmentally friendly required effect

Inactive Publication Date: 2007-04-18
安庆盖娅环保科技有限公司
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Problems solved by technology

However, there is no literature report on the domestic sodium cyanide desulfurization waste residue or the technical research on converting sodium cyanide desulfurization waste residue into sodium cyanide and lead ore products for gold beneficiation through separation and extraction.

Method used

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  • Process of preparing sodium cyanide and lead sulfide for gold ore sorting from waste sodium cyaide desulfurizing dreg

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0014] 1. Raw materials:

[0015] shape

[0016] 2. Experimental process:

[0017] (1) Add 400 g of raw materials into the beaker, add 400 g of deionized water and stir for 1 hour, then let stand for 12 hours, filter the supernatant and analyze that the NaCN content is 17.8%;

[0018] (2) Add 400 g of deionized water to the sediment in the previous step, stir for 1 hour and let stand for 12 hours, filter the supernatant and analyze that the NaCN content is 8.6%;

[0019] (3) Repeat the above steps (1) and (2) 3 times;

[0020] (4) Wash the lead sulfide residue in the cup to the sand core funnel. The funnel is connected to the suction filter bottle and vacuum pump in advance, and the sediment in the funnel is repeatedly washed and the filtrate is collected for analysis until the NaCN content is <0.5PPm, which meets the environmental protection requirements;

[0021] (5) Take new raw materials and repeat the above process, change the deionized water added last time t...

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Abstract

The waste sodium cyanide desulfurizing dreg containing various components with different physical and chemical properties, especially different dissolubility in water, is separated and extracted with water as medium to obtain liquid cyanide product with dissolved sodium cyanide and waste dreg, which is dried as the lead ore product. The said production process is simple and effective, and has no waste produced, no pollution, low cost, high yield and complete utilization of resource.

Description

(1) Technical field: [0001] The invention relates to a method for treating sodium cyanide waste, in particular to a method for preparing sodium gold cyanide and lead sulfide from sodium cyanide desulfurization waste residue. (two) background technology: [0002] At present, domestic sodium cyanide manufacturers mainly include dozens of manufacturers such as Tianjin Huahua Oxygen Factory, Jihua Company Calcium Carbide Factory, Shanghai Wusong Chemical Factory, Jiangsu Suzhou Fertilizer Factory and Anhui Anqing Shuguang Chemical Factory. The main methods are light oil cracking method , acrylonitrile by-product method, Angle method, sodium ammonia method, cyanide solution method and other methods, most of which will produce sodium cyanide waste, there are four main treatment methods: one is chemical decomposition method, the other is pressurized The hydrolysis method, the third is the deep burial method, and the fourth is the incineration method. These methods all have problem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01C3/10C01G21/21
Inventor 嵇忠平
Owner 安庆盖娅环保科技有限公司
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