[Tailings Treatment] Analysis of gold tailings cementing and filling process!

15311826613

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With more and more gold mines being mined, there are fewer and fewer recyclable gold resources, which has turned to the development of gold tailings. However, for the development of gold tailings, there are requirements for the gold content. Generally, the content per ton reaches more than 0.3g, which has recycling value. However, some gold that has been recently developed or no longer has development value. Tailings can be filled with tailings rubber industry to reduce the pollution of the surrounding environment caused by tailings storage and the harm of dam failure, etc. Let’s take a look at the requirements and processes of the gold mine tailings cementing and filling process.

1. Requirements for cemented filling of gold tailings

General tailings filling in goaf areas involvesfilling material selection , Filling mixture ratio, Filling slurry preparation, Transportation, Filling station construction, Automatic detection of filling parameters and Control system, stope filling process, filling quality assurance and other aspects.

Mines using the filling method need to backfill 0.25~0.4m³ or more filling materials for every 1t of ore mined. , Tailings are a better filling material, which can be obtained from local materials and waste, eliminating the cost of collection, crushing, transportation, etc. to produce filling gravel. Generally speaking, the filling cost of using tailings as filling material is relatively low, only 1/4~1/10 of the cost of gravel filling.

2. Gold tailings cemented filling process

The filling of gold tailings goaf is to add an appropriate amount of cement or other cementing materials to the gold tailings to make the loose tailings The ore solidifies into a solid mass and then fills the mined area. For example: After the tailings cementing and filling method was applied in a gold mine in Shandong Province, it not only made mining safe and reliable, reduced dilution losses, reduced the labor intensity of workers, but also increased production capacity by 34.7%. The reduction in the amount of tailings discharged also reduces environmental pollution.

The tailings cemented filling process uses technology to use tailings as a filling material for goaf areas, which can reduce the potential safety hazards of natural stacking of tailings. It can also improve the surface subsidence and mining stress environmental functions caused by underground mining. It is one of the important ways to build a mine with few or no tails.

In addition to the filling method of tailings glue industry, non-recyclable gold tailings can also be dry-discharged, and then the dry tailings can be sold for use in building materials and brick-making materials. , fertilizer materials, etc., effectively improving the hazards of wet storage. Xinhai Mining can carry out tailings dry discharge process, tailings cementing and filling process, tailings re-selection process and complete sets for various tailings slurries. tailings mineral processing equipment, etc. If you have any needs, please feel free to consult.