In recent years, with the depth of mining, ore dressing stone into grade decreased, increasing production costs. If the old crushing process is still used, the product size will not meet the requirements. Therefore, it is necessary to reform the old crushing process to reduce the cost of mineral processing.
Taking one of the typical crushing processes as an example, the crushing workshop process is a two-stage closed circuit process. The process consists of a section of coarsely crushed sections, plus a check sieve. The specific process flow chart is shown in Figure 1:
There are many problems in the original process. For example, the rough crushing equipment in the original crushing process is unreasonably matched with the medium and fine crushing equipment. Secondly, in the production practice, it is also found that in the material on the sieve, the content of long strips and flake-type ore materials is relatively high, and this part of the particles is easy to be ground, and should be used as a crushed product to enter the powder ore bin as early as possible. So as not to circulate in the crushing process. In addition, due to the excessive overload operation of the crushed parts, the production has a great impact on production.
The basic scheme of the transformation is to change the single-layer vibrating screen to double-layer sieve, the upper layer of the sieve product is +40mm, enter the jaw crusher for medium crushing, and the product and the bottom sieve of the sieve product enter the short-head cone crushing. The machine is finely shredded. The process flow after the transformation is shown in Figure 2.
After the transformation, the rationalization of the process was realized. The fine crushing capacity is greatly enhanced, and the discharge port can be adjusted smaller; after the sieve is modified, the long strip material of the qualified grain grade can be drained under the sieve, which reduces the pressure caused by the circulation and repetition of this part of the process. The screening efficiency is obviously improved, the crushing particle size is greatly reduced, and the technical and economic indicators have been greatly improved, creating a powerful condition for increasing the grinding treatment capacity. The most important thing is that the main equipment has been highly efficient after the technical transformation, and the energy saving and consumption reduction have been fully reflected, which greatly reduces the production cost of the beneficiation.
Computer Control Electronic Universal Testing Machine
Mechanical Testing Machine,Peel Strength Testing Machine,Geotextile Testing Machine,Ring Stiffness Tensile Testing Machine
Jinan Chenda Testing Machine Manufacturing Co., Ltd. , https://www.jncdtester.com