In my opinion, the status quo of graphite tailings discharge (1) tailings discharge, the annual output of national quality graphite is about 500,000 tons, and the annual discharge of ore dressing tailings is more than 6 million tons. (B) Tailings Tailings mineral composition of mineral composition generally comprises: mica, feldspar, quartz, tremolite, diopside, garnet, calcite, rutile, pyrite, graphite, chlorite, epidote kaolinite, smectite, titanium, iron ore, and sericite. (III) Tailings grain size composition Tailings grain size composition Although there are some differences between the graphite ore, the general particle size distribution is relatively standardized, the particle size range is 0.4mm, and the coarse grain size is dominant. (IV) Tailings Storage The national crystalline graphite concentrating plant has a tailings dam, and the tailings are stored in the tailings pond. After the wastewater is treated by precipitation, it is generally 60%~ recycled to the ore processing plant for recycling. Wastewater containing floating agents such as terpene alcohol, lime and particulate suspended matter is treated and discharged to the target. II. Prospects for the Utilization of Graphite Tailings (I) Transforming tailings into “secondary†resources Implementing the “Circular Economy Promotion Law†comprehensively utilizes tailings to turn waste tailings into “secondary†resources. (II) Recycling of valuable minerals Some tailings contain valuable minerals such as rutile, ilmenite, pyrite, muscovite, etc., which can be recovered by mineral processing. A graphite mine in Shandong has recovered its tailings rutile and ferro-iron. Mine precedent. (III) Using the tailings to make building materials The use of 6% cement in a tailings mine in Shandong Province was used as the base layer of the expressway, and achieved good results. The composite international hollow brick is prepared by semi-drying of the whole tailings and sintering at 1040-1060 °C. A good performance non-burning brick was prepared by adding 8% gelling agent to the whole tailings. (4) Using tailings to make other mineral materials, using graphite tailings, adding marble , acidified graphite, powdered graphite, fluorite , and solid water glass to produce composite mold flux. After the graphite tailings were used and ground to -200 mesh, the white carbon black was produced by a precipitation method. (V) Graphite tailings pond Rehabilitation of greening has been achieved by the area of ​​graphite waste tailings inventory complex soil planting and greening. Share to: -- The content of this article is for reference only and does not constitute investment advice. Investors operate on this basis at their own risk.
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