Application of Energy-saving Ball Mill in Shanxi Iron Mine Project
Type of ore: iron
Processing scale: 1200TPD
Grinding equipment: energy-saving ball mill
Process flow: two stages and one closed circuit crushing and screening-two stages of closed circuit grinding and grading-one roughing, three times of beneficiation-fine tailings filtering and dewatering process
In the Shanxi 1200t/d iron ore beneficiation project, Xinhai used advanced technology and energy-saving ball mills and reduced auxiliary facilities, striving to achieve more output with less input, and achieved very good results. It not only completed the customer’s beneficiation indicators, It also takes the environment into consideration to make the discharge of the “three wastes” meet the national standards.
Background of the project
The 1200t/d iron ore beneficiation project in Shanxi, China is a mining industry chain service (EPC+ M+O) project.
Crushing and screening stage
The final product size of crushed ore is -12mm. The equipment selection is advanced and reliable, and the investment is low; the design adopts a compact and reasonable co-plant configuration for crushing and screening operations, which is very convenient for production management; the crushed product has a fine particle size, which saves the comprehensive cost of crushing and grinding;
Grinding and classification stage
the fineness of the first-stage grinding product is -200 mesh accounting for 67%, and the fineness of the second-stage grinding product -325 mesh accounting for 88.47%. The grinding equipment uses a bearing-driven energy-saving ball mill, which greatly reduces the cost of grinding. The first-stage classification equipment adopts a modified spiral classifier, and the second-stage classification adopts a fine screen to strictly control the grading particle size;
Magnetic separation stage
one-time roughing, three-time selection of magnetic separation process, the ore slurry is transported by Xinhai Mining Wear-resistant Slurry Pump;
Concentrate tailings conveying stage
The iron concentrate is filtered by a permanent magnet filter and transported directly to the iron concentrate storage yard by a belt, and the tailings flow directly to the tailing ditch outside the concentrator.
The project is a newly-built concentrator. Xinhai Mining Equipment strives to be advanced and reasonable in equipment selection, selects improved new energy-saving equipment, simplified auxiliary facilities, minimizes infrastructure investment, and achieves “less input, more output” and improved selection. The economic benefits of the plant, while taking into account the principles of environmental protection, make the discharge of the “three wastes” meet the national standards.