Liming Heavy Industry create a model of molten salt slag rare earth waste recycling project
In recent years, the call for environmental protection and sustainable development of resources has been growing. The rare earth industry has actively explored efficient treatment methods, and strived to achieve the green and circular development of the rare earth industry. Today, with the strong support of Liming Heavy Industry MTW European type grinding mill, the molten salt slag rare earth waste that was originally regarded as "garbage" has been transformed into a huge "rare earth treasure house"
Project overview:
In the key areas of rare earth waste treatment, Liming Heavy Industry has in-depth cooperation with industry newcomers to build a new chapter of green development. The recycled molten salt slag, waste magnetic materials, etc. are first pre-treated, and then finely ground by Liming Heavy Industry MTW European version grinding mill, and then through extraction and purification processes, high-purity rare earth materials and subsequent series of products are produced. This production line relies on advanced technology to reduce resource consumption and pollution emissions, shorten the cycle and improve quality. It not only realizes the recycling of resources, but also plays an important role in building a green system and promoting the process of carbon peak and carbon neutrality.
Processing materials: molten salt slag rare earth waste
Finished product use: regenerated rare earth oxides
Equipment used: 2 sets of MTW European type grinding mill
On-site direct hit:
Technical advantages:
MTW series European type grinding mill has experienced nearly 40 years of technological precipitation, absorbed the latest European grinding concept,and has a number of independent patent technology property rights. Since it was put on the market, it has passed a number of scientific and technological achievements appraisals and has become the best replacement product for traditional Raymond mills, pendulum mills and ball mills. It is the preferred equipment for large-scale mineral plant construction.
1. Leading technology
National patented products, four generations of mills upgraded and transformed, mature and stable.
2. Not easy to block, high powder selection efficiency
The curved arc air duct is adopted, and the internal outlet direction is conducive to the dispersion of materials and is not easy to block; the new hanging cage powder selection machine frequency conversion control is adopted, the finished product fineness is adjustable and controllable, and the powder selection efficiency is greatly improved.
3. Advanced transmission and stable operation
The overall transmission of bevel gears has strong power, high efficiency, large output and low energy consumption. The sinking design has stable operation, small vibration and low noise.
4. Convenient maintenance and low operating cost
The main shaft transmission system and the fan transmission system are both lubricated with thin oil, with a long oil change cycle, low maintenance frequency and low operating cost.
5. Economical investment and green environmental protection
Small footprint, simple structural layout, strong set-up, low infrastructure cost, short construction period and fast capital recovery. The finished product has low pollution and high whiteness. The whole system operates under negative pressure without dust overflow, which meets the latest national environmental protection requirements.
6. Integrated comprehensive solution
Provide integrated comprehensive solutions such as design, supply, construction and service.
Process flow:
The raw materials are uniformly and continuously fed into the main machine grinding chamber by the variable frequency belt feeder for grinding. The ground materials are sent to the powder selector by the fan airflow for classification. Under the action of the analyzer, the materials that do not meet the fineness requirements fall into the grinding chamber for re-grinding, and the qualified materials follow the airflow through the pipeline into the cyclone powder collector for separation and collection, and are discharged through the discharge device as finished powder. The separated airflow enters the fan through the return air duct at the upper end of the cyclone powder collector. The production system operates under negative pressure and closed conditions, and is equipped with a pulse dust collector without dust spillage, which meets national environmental protection standards.
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