Innovative graphite beneficiation technology, efficient use of emerging resources!

Boli County is located in the eastern part of Heilongjiang Province. The territory rich in mineral resources, mainly coal, gold, graphite, granite, marble, zeolite, bentonite, in which the graphite reserves of 420 million tons, 18.8% of the graphite reserves. Boli County takes advantage of graphite resources to focus on key core technology breakthroughs and industrial integration of graphite processing. While greatly improving resource utilization efficiency, it is vigorously developing graphite deep processing and graphene industry, taking graphite new energy and new materials industries as Continue the industry and create new industrial support for Boli County. In terms of innovative technology, the following improvements and breakthroughs have been made:

First, lengthen the flotation process.

In recent years, the graphite mines in Boli County have learned the lessons of relevant enterprises, organized technical personnel to tackle the problems, and hired expert guidance to make efforts to grind and raise carbon levels, increase the number of flotations, lengthen the flotation process, and Grinding on self-research and transformation, increasing the capacity, so that graphite stays in the re-grinding machine for 2/5 longer than the old equipment, the grinding effect is obviously improved, the graphite and sediment are maximally separated, and the loss rate is greatly reduced.

Second, increase the tailings recovery process.

The Boli County Graphite Mine changed the original Shandong flotation scales graphite tails without the recycling procedure, adding a recycling process. Through laboratory personnel to closely monitor the loss of ore dressing , increase or decrease the recycling equipment according to the amount of loss, adhere to the green development, recycling development, low-carbon development as the basic principle, after years of technological innovation, Hongda graphite mine will be large scales in the beneficiation process The graphite loss rate is controlled within 0.2%, which is far lower than the international standard of 0.5%, which greatly reduces the waste of resources.

Third, improve the way of water intake.

The method of water intake in the beneficiation process was improved, and the method of replacing the pump back pumping with the unpowered water recirculation technology was invented, and the fresh water was automatically returned in the form of a funnel well, which saved energy consumption. This method is still rare in China.

Fourth, the comprehensive utilization of tailings.

By arranging a sand washing machine upstream of the tailings pond, the coarse sand discharged during the beneficiation is cleaned, and then the fire-free block cement brick is prepared or supplied to the brick making factory as a raw material to achieve sufficient downstream resources in the beneficiation process. use.

Through scientific and rational use of resources and continuous exploration of innovative technologies, Boli County Graphite Mine has taken a step forward in the road of economical and intensive, and its economic benefits have been significantly improved. Now the main production of high-end graphite products, high purity graphite, spherical graphite anode material for lithium battery and other products are first class.

Conclusion

In recent years, the Boli County Graphite Mine has achieved a number of measures such as lengthening the flotation process, increasing the tailings recovery process, improving the water intake method, and comprehensive utilization of tailings, scientifically and rationally utilizing resources, continuously innovating technology, and achieving on the road of economical and intensive Some achievements have provided direction for the development of new industries in Boli County. At the same time, it provides experience for the development of other mineral resource-based cities.

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