Common equipment in mineral processing equipment
Due to the large-scale development and utilization of mineral resources, the available resources are continuously reduced, resulting in a decline in the taste of raw ore mining, and the subsequent processing of smelting and other quality requirements for mineral processing products is also increasing. At the same time, human environmental awareness is growing. These realities have placed increasing demands on beneficiation equipment, prompting the development of mineral processing equipment to be larger, better and more energy efficient. The development of mineral processing equipment and mineral processing technology is synchronized, the process is dominant, and the equipment is the foundation. The birth of a new type of mineral processing equipment often leads to changes in the beneficiation process. The technical level of the equipment is not only the premise of the process level, but also directly affects the smooth flow and application of the production process. The advancement of science and technology, the mutual penetration of various sciences and the integration of various industries, the emergence of new structures, new materials, new technologies and new processing technologies, the extensive application of mechatronics and automatic control technology has effectively promoted beneficiation. Continuous innovation of equipment and development towards energy efficiency. Commonly used beneficiation equipment and beneficiation method Reselection method The re-election method is to classify minerals based on the difference in relative density of minerals (commonly referred to as specific gravity). Mineral particles of different densities are subjected to hydrodynamic forces and various mechanical forces in the moving medium (water, air and heavy liquid), resulting in suitable loose delamination and separation conditions, so that different density of ore particles can be separated. 2. Flotation method The flotation method is based on the difference in physical and chemical properties of the mineral surface, and is treated by a flotation agent to selectively attach the useful mineral to the bubble to achieve the purpose of sorting. Non-ferrous metal ore beneficiation, such as copper, lead, zinc, sulfur, molybdenum and other miners to use flotation process; some ferrous metals, rare metals, and some non-metallic minerals, such as graphite ore, apatite, also with floating Choose the law. 3. Magnetic separation method The magnetic separation method is based on the difference in mineral magnetic properties, and different minerals are subjected to different forces in the magnetic field of the magnetic separator to obtain sorting. It is mainly used for sorting ferrous metal ore ( iron , manganese , chromium ); it is also used for the selection of colored and rare metal ores. 4.Electrical selection method Electroporation is based on the difference in mineral conductivity. When the mineral passes through the high-voltage electric field of the electric separator, the electrostatic force acting on the mineral is different due to the difference in the conductivity of the mineral, so that the mineral can be separated. Electroporation is used for the selection of rare metals, non-ferrous metals and non-metallic ores. Currently used mainly for the separation and selection of mixed coarse concentrates; such as the separation of white tungsten and cassiterite ; the selection of zircon , the selection of antimony ore. Mineral processing equipment includes: ball mill , crusher , pulverizer, jaw crusher , impact crusher, cone crusher , ultra-fine crusher, magnetic separator, dry magnetic separator, wet magnetic separator, double force ring height Gradient magnetic separator, magnetite ore dressing equipment, flotation machine, mining flotation machine, classifier, spiral classifier, sorghum spiral classifier, dryer, rotary kiln, shaker, hoist, high frequency Sieve, finished sieve, high-efficiency concentrator, spiral chute, disc granulator, trough feeder, energy-saving ball mill. Common equipment in mineral processing equipment Crusher: jaw crusher, hammer crusher , impact crusher, cone crusher, tooth roll crusher, double roll crusher, etc. Ball mill: cement ball mill, cone ball mill, ceramic ball mill, energy-saving ball mill, high-energy ball mill, high-fine ball mill, lattice ball mill, overflow ball mill, etc. Screening and grading equipment : high-frequency sieve, circular vibrating screen, linear vibrating screen, drum screen, finished sieve, classifier, etc. Magnetic separator: wet magnetic separator, dry magnetic separator; strong magnetic field magnetic separator, medium magnetic field magnetic separator, weak magnetic field magnetic separator; river sand magnetic separator, wet permanent magnetic cylinder magnetic separator. Flotation machine: SF flotation machine, XJK series flotation machine, stirring flotation machine, etc. Mineral processing auxiliary equipment: vibrating feeder, trough feeder, mixing tank, bucket elevator, pendulum feeder, electromagnetic vibrating feeder, high efficiency concentrator, disc granulator, disc feeder , shaker, spiral chute, cement mill / raw material mill, MBS rod mill, etc. Drying and calcining equipment: dryer, rotary kiln, etc. Development trend of mineral processing equipment The crushing engineering equipment plays an important role in the process of mineral processing and mineral processing. The main development characteristics in recent years are: (1) The advanced equipment of international famous brands is continuously optimized and developed in the direction of adopting new design ideas, introducing modern science and technology and large-scale. (2) The development of pulverization theory and experimental technology, catastrophe theory, fractal theory, discrete teaching and other methods were introduced into the smash theory research. Theoretical studies on ball milling process and research on crushing work index have been reported. Crushing test techniques tend to replace semi-industrial tests with small laboratory tests and computer simulations. (3) The principle of material layer pulverization has had a great impact on the development and development of crushing engineering equipment. This principle is generally adopted in the development of new equipment and the transformation of old equipment. (4) Since the key to achieving multiple crushing and grinding is to reduce the particle size of the final crushed product (ie, the grain size of the grinding), the proportion of crushing equipment in the research and development work in this range is greater than that of the grinding equipment, which is finely divided. And the development and development of ultra-fine crushing equipment accounted for a large proportion. (5) In order to achieve more and more grinding, more and more domestic advanced crushing engineering equipment has been introduced, and more and more large-scale equipment has been introduced. (6) The crushing engineering equipment developed and developed in China is mainly small and medium-sized, and its development characteristics are diversified types. Some products, such as ball mills, are moving in the direction of large-scale. Buying ore dressing equipment must look at what mines you want to choose, and then look at what mineral processing equipment you want to buy! The process of mineral processing determines the process, the process determines the equipment. Seamless carbon steel pipes are made of steel ingots or solid billets through perforation to make capillaries, which are then hot-rolled, cold-rolled or cold-drawn. The raw material of carbon Steel Pipe is a round tube blank, which is cut by a cutting machine into a billet with a length of about 1 meter, and sent to a furnace for heating through a conveyor belt. The billets are fed into the furnace and heated at about 1200 degrees Celsius. The fuel is hydrogen or acetylene. Furnace temperature control is a critical issue. After the round tube blank is released from the furnace, it is pierced through a pressure punching machine. Generally, the more common punching machine is the conical roller punching machine. This kind of punching machine has high production efficiency, good product quality, large amount of perforation and diameter expansion, and can wear a variety of steel grades. After perforation, the round tube blank is successively cross-rolled, continuously rolled or extruded by three rolls. Carbon Steel Tube, Mild Steel Pipe, Hot Rolled Steel Pipe, Weld Steel Pipe Shandong Guanzhou Iron and Steel Group Co., Ltd. , https://www.guanzhouiron.com
1. Seamless steel pipe for structure (GBT8162-2008). Mainly used for general structure and mechanical structure. Its representative material (brand): carbon steel, 20, 45 steel; alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, etc.
2. Seamless steel pipes for conveying fluids (GBT8163-2008). It is mainly used for conveying Fluid Steel Pipe in engineering and large-scale equipment. The representative material (grade) is 20, Q345, etc.
3. Seamless steel pipes for low and medium pressure boilers (GB3087-2008) are used to manufacture various structures of low and medium pressure boiler superheated steam pipes, boiling water pipes and superheated steam pipes, large smoke pipes, small smoke pipes and arch bricks for locomotive boilers Hot-rolled and cold-drawn (rolled) seamless steel pipes of high-quality carbon structural steel for pipes. The representative material is 10, 20 steel.