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 Drum screen: efficient separation of sand and gold Drum screen is one of the commonly used equipment in the process of gold panning, mainly used for the preliminary separation of sand and gold. Its working principle is to screen sand and gold particles through the rotation of the drum. The design of the drum screen usually includes multiple layers of screens, and screens with different apertures can separate particles of different sizes. This equipment is suitable for placer ore with high gold content, and can quickly remove large pieces of sand and gravel, leaving fine sand with high gold content. The advantages of the drum screen are simple operation and convenient maintenance, which is suitable for small and medium-sized gold panning operations.

The fully automatic river channel special sand screening machine is applicable to sand and stone separation, coarse and fine separation, sea sand and shell impurity screening, etc. Simple installation foundation: Because the entire equipment is a box-shaped frame structure, only a flat ground is required. Desalination and flushing method: Before flushing, the sea sand needs to be soaked in the fresh water soaking pool for no less than 24 hours, and then sent to the feed chute bucket by a loader. There are fresh water inlets on both sides of the chute bucket. Mechanical vibration is assisted by manual work to make the sea sand enter the cleaning drum under the continuous impact of fresh water flushing. The rotating stirring drum fully stirs and cleans the sea sand. The desalinated sea sand enters the grab bucket under the push of the built-in spiral blades of the drum, and is sieved through the discharge hopper and the discharge belt conveyor to screen out larger particles of impuritie...

Due to the many unfavorable conditions of coal slime , such as high moisture, high viscosity, high water holding capacity and low calorific value, it is difficult to realize industrial application. It has long been rejected by power users and has been mainly sold for civilian use. Since the reform and opening up, the national economy has developed rapidly, coal production has jumped to the first place in the world, and the market situation has also changed greatly. The depth and breadth of coal processing are developing rapidly, the output of coal slime has increased significantly, and the comprehensive utilization of coal slime has become an urgent problem to be solved. With the continuous development of industrial science and technology in my country, the remaining coal slime has been well utilized. The coal slime dryer adopts a new technology of crushing and dispersing the coal slime first and then thermally drying it, so that the treatment of coal slime can be realized continuously...

Generally, wet weak magnetic separation is used to select titanium magnetite first, and then fatty acid collectors are used to float calcite. After the middlings are de-doped, ilmenite is floated. The beneficiation process of ilmenite depends on the nature of the material. Since the specific gravity of titanium minerals is relatively large compared to non-metallic gangue minerals, gravity separation can be used for pretreatment or rough separation and tailing; magnetic separation is widely used in iron removal operations to improve the concentrate grade of ilmenite, and can also be used to enrich ilmenite with a smaller specific gravity of gangue minerals; electrostatic separation is mostly used for purification operations when various non-conductive minerals are contained in titanium concentrate selected by other processes; flotation is more suitable for the beneficiation of primary ilmenite fine-grained ore. Placer-type ilmenite, especially sea sand-type ilmenite weathered from pegm...

The screen machine is equipped with double-layer screen plates according to customer needs and uses dual-axis vibration source excitation. It has a larger processing capacity and higher screening efficiency, and is energy-saving and environmentally friendly. The design concept of the gold vibrating screen breaks the design concept of the same vibration source, same amplitude, and same vibration frequency of the conventional vibrating screen, and can adopt a new structure that combines circular motion, elliptical motion, and linear motion. The collected ore needs to be transported from the mining area to the beneficiation plant for preliminary purification. This process usually uses equipment such as trucks and belt conveyors. The ore needs to be crushed and screened during transportation to break the ore into smaller particles and remove waste rock and impurities. The ore particles after preliminary purification are easier to enter the subsequent beneficiation process, thereby improvin...

The tin ore beneficiation process is roughly divided into four links: crushing, pre-selection, flotation, and re-selection. The connection between each stage is appropriate. Only when the equipment configuration is reasonable, the whole process of tin ore beneficiation technology will be smoother and more convenient to operate. 1. Crushing and screening The nature of the tin ore is relatively simple, and a simple one-step crushing with a jaw crusher can achieve good results. The ore is crushed to 20mm, and then screened into two particle sizes of 20-4mm and 4-0mm. After crushing, the tin ore particles are uniform in size, beautiful in shape, and without over-crushing, providing high-quality raw materials for the next link, reducing the load of the grinding equipment, and having a good promoting effect on improving the grade of tin concentrate. 2. Pre-selection The 20-4mm ore enters the heavy medium cyclone for pre-selection, and then after a rod mill, the jig is used for pre-selection...

This device can clean the waste brick-concrete particles mainly waste concrete and reduce the impurities on the aggregate surface, meet the basic requirements of recycled aggregate, and have high production efficiency. Product features (1) Research on the operation problems of the primary screening device, cleaning device and screening device First, the recycled concrete aggregate after crushing by the jaw crusher is poured into the primary screening device through a pipeline, and the impurities in the aggregate are screened out after the primary screening treatment. The fine aggregate with a particle size of less than 4.75mm enters the cleaning device; the impurities adsorbed on the aggregate surface are further removed by cleaning, and the recycled aggregate is soaked to reach a saturated state; the concrete aggregate after the above two procedures is poured into the screening device, and the aggregate is screened by adding screening nets of different particle sizes. The screened coa...