In recent years, "Green Mining" has become an inevitable choice for mining enterprises.
As the "waste" after mineral processing, tailings has been recognized as the potential
secondary resource, but traditional tailings wet discharging violates the principle
"Green Mining". Instead, tailings dry stacking greatly alleviates the pressure tailings
capacity, reduces the potential risk and environment pollution of tailings pond, and
improves the re-utilization rate of tailings.Back in 2009, Xinhai proposed the concept
of "tailings dry stacking". And Xinhai has been committed to the development and
innovation of tailings dry stacking over the last decade, which was designed to
customize the most suitable tailings dry stacking and the best-value dewatering
equipment, help the construction of "Green Mining ".
Compared with others, Xinhai tailings dry stacking can save at least 2 yuan/ton, ensure the
final water content is less than 15%. And the service life of this process is twice times of
other’s. Besides, they can be widely used in building materials, soil fertilizer, bashing,
open pit filling, land reclamation, damming, realizing the secondary utilization of
Taking 3000t/d tailings processing plant as an example, Xinhai tailings dry
stacking saved the cost of 375~ 6.25 million Yuan per year, the
rate of return water was over 90%.
Calculated on 15 Yuan/ton, the mine company need pay taxes over 1.485 million Yuan
Calculated on 2 Yuan/ ton, the tailings can obtain at least
198000 Yuan per year.
Reuse of water resources can be saved as two million and three hundred thousand
If you have any questions, please contact us by the following ways, and we will provide you with better help!
According to "solid content of supernatant to measure settling velocity/ compression
concentration" settlement test and sizing assay test, Xinhai tailings laboratory
concludes a series of data, such as grain size, concentration, composition, silt
content, then selects the most suitable flocculants from thousands of kinds of
flocculants by combining with the requirement of backwater quality. After that, Xinhai
tailings designers designs the best-value tailings dry stacking process and equipment
selection according to the test results and actual conditions.
Slurry Pump + Hydrocyclone + Dewatering
Screen + Deep Cone Thickener
Slurry Pump + Hydrocyclone +
Dewatering Screen + Deep Cone Thickener + Ceramic
Slurry Pump + Hydrocyclone + Dewatering
Screen + Deep Cone Thickener + Press Filter
Slurry Pump + Deep Cone
Thickener + Press Filter
Xinhai tailings research institute had built the first tailings dry stacking test-bed in
2009. And all tailings dry stacking processes that Xinhai designs can be commissioned on
it firstly, which ensures the stable and efficient operation of tailings dry stacking
Xinhai tailings dry stacking research and development team has improved most equipment
used in tailings dry stacking by combining with many years of practice experience, and
successfully obtained more than 10 national patents. These equipment was designed to
prolong the service life, reduce equipment area and save equipment investment on the
premise of guaranteeing the best effect.
The annual processing capacity of Sichuan iron ore dressing was 1.3 million
tons. Initially, this project used traditional tailings wet discharging, the
concentration was about 20%, and the tailings was directly discharged into
the tailings pond. Facing with the problems of maintenance, construction and
environment pollution, the customer decided to entrust Xinhai to customize
the whole set of tailings dry stacking.
After the detailed analysis of actual tailings indexes, Xinhai designed its
process and equipment according to local conditions: hydrocyclone +
efficient deep cone thickener + high frequency dewatering screen joint
process, the whole tailings dry stacking only spent 4.2 million.
Finally, the tailings discharging concentration was above 85%, the recovery
rate of filtrate was more than 90%, which not only avoided the hidden
troubles of tailings pond, but also effectively saved the water resource
more than 6 million m3/year, which was up to 7.2 million Yuan/year at
Yu Yongjiang, Xinhai technical director, is the first man who applied the
theory of tailings dry stacking in practice in China, and leads Xinhai
technical team to develop advanced Tailings dry stacking test-bed.
So far, Xinhai has undertaken tailings dry stacking projects more than 50 at
home and abroad, and successfully completed more than 30 tailings dry
stacking upgrading projects.
In 2008, Xinhai obtained ISO9001:2008 quality management system certification and EU
certification, and provided high-efficient, energy-saving and reliable tailings dry
stacking proce for customers!
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