How to make comprehensive use of graphite tailings
At present, the annual output of graphite in domestic is only about 500000 tons, and the annual discharge of ore dressing tailings has reached more than 6 million tons. Graphite tailings include mica, feldspar, quartz, calcite, rutile, graphite, kaolinite, etc. These tailings must be recycled and utilized.
The strength of graphite tailings after beneficiation is different due to different ores in different places, but most of the particle sizes are about half a millimeter, which is not difficult for current industrial technology. Therefore, comprehensive utilization of tailings to turn waste into treasure is a subject that many enterprises have been studying. So what aspects can graphite tailings be utilized?
First of all, it must depend on whether there are valuable minerals, such as rutile, calcite, mica, feldspar and other valuable minerals can be recycled during beneficiation to create new for the mine. The second is to use tailings to make sand to supply aggregates for engineering construction and produce concrete. Of course, it is a new trend in the vast rural market to use tailings to make sand and then process hollow bricks and unburned bricks.
Of course, some enterprises have begun to use graphite tailings, and then add marble, acidified graphite, powdered graphite, fluorite, and solid sodium silicate to produce composite mold powder. What's more, it is also very good to process the tailings into 200 mesh fineness through milling machine, and to produce and process white carbon black. It is said that some enterprises have used graphite tailings for plant greening, and the effect is very good.
Not only graphite tailings, but also various metal and non-metallic ores will have a lot of waste residue in the process of mining and beneficiation. Yesterday, when the technical strength was still lacking, most of the tailings were stored. Years of accumulation not only occupied land, but also caused pollution to the surrounding environment. In domestic, where economy and science and technology are developing rapidly, many enterprises already have tailings utilization technology, environmental protection, and resource utilization, It is an important direction now and in the future.