Mercury antimony tailings filling technology

1   Technical name: Mercury antimony tailings filling technology

2   Technical Scope: non-ferrous metal mine gob filling

3   Technical introduction

3.1   Fundamental

The tailings filling goaf technology uses full tailings as the filling material. The whole tailings are naturally settled, partially dehydrated, compressed by air and then discharged to the mixing drum, and the cement is quantitatively added to the high-concentration stirring tank by double-tube spiral. After the slurry is stirred, it is sent to the underground gob area or the stope through the filling pipe network through the mortar pump.

3.2   Key technology

( 1 ) Closing the goaf with a structure of sufficient strength.

( 2 ) Filling preparation, the mortar concentration should reach 50%~60% .

( 3 ) Dehydration of the filling body.

4   Technical application and typical projects

Table 48   Investment and income of typical projects

The technology in the ditch since the bronze mercury antimony ore applications for two years, the whole system running smoothly, production capacity will reach design capacity, the strength of backfill mined-out area to meet processing requirements, to achieve the purpose of non-waste production. It effectively alleviated the pressure of enterprises in environmental governance, protected the surface geological environment, improved the safety conditions of underground mining production, improved the recovery rate of mineral resources exploitation, and achieved remarkable economic and social benefits.

5   Application effect and promotion prospects

The tailings filling technology can not only realize the tailings-free storage, but also can solve the hidden dangers of underground production safety by filling the goaf, improve the utilization rate of mineral resources, increase the recovery efficiency of the pillars by 10 million yuan, and reduce the safety production risk management costs by about 200. Ten thousand yuan, the application prospect is broad.

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