Bosite low-grade nickel ore beneficiation process technology, nickel ore separation process, nickel ore roller crushing
Nickel ore beneficiation process, nickel oxide ore processing technology:
Nickel ore beneficiation process is based on the ore category It is divided into nickel sulfide ore beneficiation technology and oxide ore processing technology.
Nickel sulfide ore beneficiation process: Copper-nickel ores with a nickel content greater than % can be directly sent for smelting; those with a nickel content less than % need to be beneficiated, and then the concentrate is sent for smelting. Copper-nickel sulfide ores are commonly separated by flotation. Since pentlandite, chalcopyrite and nickel-bearing pyrrhotite are all sulfide ores with different flotability, it is necessary to adjust the value of the slurry and add different inhibitors to separate them during flotation. .
The flotation process of copper-nickel sulfide ore can basically be divided into two types: priority flotation process and mixed flotation process. Regardless of the sorting process used, nickel needs to be prevented from entering the copper concentrate to avoid nickel losses during copper smelting. When the grade of copper in the ore is higher than that of nickel, a priority flotation process must be used to obtain copper concentrate first, and then flotation to obtain a nickel concentrate. When the grade of copper in the ore is lower than nickel, a mixed flotation process must be used to obtain There are two separation methods for copper-nickel mixed concentrates: when the particle size of copper-nickel minerals is relatively coarse and the two minerals are not closely symbiotic, flotation can be used to separate them one by one to obtain copper concentrate and nickel concentrate, which are then sent separately. De-smelting When the particle size of copper-nickel minerals is fine and the two minerals are closely symbiotic, the mixed concentrate is first sent for smelting. After high matte nickel is produced, the copper-nickel is separated by flotation. Sometimes, the floatability of some nickel minerals is too poor to float out in time during mixed flotation, so it is necessary to use flotation or other mineral processing methods to recover them from the mixed flotation tailings and separate them separately.
Nickel oxide ore processing technology: The nickel minerals in nickel oxide ores have small particle sizes, and are mostly dispersed in gangue minerals in the form of homogeneous isomorphs, making it difficult to separate them by physical methods. Therefore, nickel oxide ore is first crushed and screened to remove large rocks with poor weathering and low nickel content, and then sent to the smelting plant for processing. There are two smelting methods: fire method and wet method. The commonly used methods are electric furnace smelting of matte nickel and ammonia leaching and acid leaching.
Henan Bosite Machinery Manufacturing Co., Ltd. is a manufacturer specializing in the production of copper-nickel-iron ore beneficiation equipment. It is a professional supplier of complete sets of mineral processing equipment with a daily processing capacity of ton. Can provide users with project design, ore identification, small tests, pilot tests, and process flow:
Bosite low-grade nickel ore beneficiation technology, nickel ore separation process, nickel ore roller crushing