A method for enriching precious metals from the wall and ground of a gold and silver smelting workshop

Abstract

The invention belongs to the technical field of resource recovery, and particularly relates to a method for enrichment of precious metal in walls and ground of a gold-silver meltshop. According to the method, cleaning operation is conducted on materials scraped from the walls and the ground of the gold-silver meltshop through sulphuric acid, so that a good medium environment is provided for follow-up gold and silver floatation, by adding ammonium sulfate, sodium sulfide and ferrisulfas, the harmful influence of cement, earth and the like in the dismantled materials on the floatation mineralization environment is effectively avoided, then, efficient enrichment of gold and silver is achieved through floatation, and the recovery rate of the gold and silver is high.

Description

technical field [0001] The invention belongs to the technical field of resource recovery, in particular to a method for enriching precious metals from the wall and ground of a gold and silver smelting workshop. Background technique [0002] In the gold and silver smelting workshop, during the gold and silver smelting process, a small amount of gold and silver precious metals are attached to the walls and ground of the gold and silver smelting workshop due to smoke, dust, spillage, and mishandling. After a long period of time, the gold content on the walls and ground is 100g More than / t, the silver content is 1%, which has high economic and comprehensive recycling value; because the walls and ground of the gold and silver smelting workshop are complex and diverse, including cement, sand, concrete, bricks, lime, Soil and dust, etc., make it difficult to comprehensively recover gold and silver precious metals in walls and ground. [0003] The traditional flotation process and...

AI Technical Summary

Problems solved by technology

[0003] The traditional flotation process and leaching process cannot realize the efficient enrichment of valuable components of gold and silver precious metals in the wall and ground. The adaptability of the components is poor, and the cement, soil, lime, etc. among them seriously deteriorate the flotation mineralization environment. In addition, the fine-grained ore slime has a large specific surface area, and the ore slime competes to absorb a large amount of flotation agents, resulting in the consumption of flotation agents Large, and the amount of slime floating up with the foam is large, the mineralization environment is poor, the enrichment effect of gold and silver is poor, and the cost is high; 2) Due to the complex components of the wall and ground, the traditional acid leaching process cannot realize the demolition of garbage Anti-enrichment of gold and silver in the medium, and the acid consumption of the acid leaching process is relatively large, and the production cost is relatively high. Low, and the process of using cyanide is complicated. Cyanide is a highly toxic substance. During the production process, it is easy to seriously pollute the soil and water.