Golden tailing processing
The history of gold mining shows that initially, easily accessible areas, mainly alluvial deposits, were developed and mined. With the depletion of the reserves of these areas, they moved to ore deposits, leaving behind tens of billions of tons of technogenic placers.
Studies were conducted to assess the prospects of recycling technogenic placers (2005, Yagodninsky district, Magadan region). These studies consisted of three stages.
The first stage included the study of the physical and mechanical properties of gold and the minerals that make up the placer, where a unique "know-how" rotary mill of our design was used as a grinder. The grinding process was carried out by a selective method, initially destroying the minerals in their weak areas. The present metal (gold, copper, iron, etc.) was rolled into balls.
The second stage included the development of a methodology for evaluating the products obtained in different technological modes. Processing samples weighing 40 kg. a concentrate is obtained, which can be assessed and described by observing under the eyepiece of a microscope.
The third stage is the study of the presence of gold in technogenic placers. This stage was carried out from November to December 2005. on the territory of the artel of the Yagodninsky district of the Magadan region. As an object of research, ephel dumps were studied.
The study's results showed that there where the content of coal-clay shales in ephels was up to 98%, and the average gold content decreased to 0.1 g/ton. In addition, these studies showed that gold in this region is mainly contained in unopened quartz grains, and pyrite also contains significantly less gold.
The research developed a technological line of a modular design, where a separate module consists of a crusher or mill, a metered supply system and separation by a separator into a different middling product and "tails." By assembling these modules in series or parallel, it is possible to build an enrichment complex with a capacity of 10-100 ton/hour, which operates profitably with gold content in the feedstock of 0.7 g/ton or more.
The above materials have shown gold in technogenic placers and sometimes in much larger quantities than scientists estimated. Based on studies, gold is concentrated in the gall, in pieces of rock that make up the body of the placer. The modular design of the complexes allows you to create lines with A capacity of 100 tons/hour or more.
Technological process for gold tailing:
