Classification of mining machinery

Classification of mining machinery
Crushing equipment
Crushing equipment is the mechanical equipment used for crushing minerals.
Crushing operations are often divided into coarse crushing, medium crushing and fine crushing according to the size of feeding and discharging particle size. Commonly used sand and stone equipment are jaw crusher, impact crusher, impact crusher, compound crusher, single section hammer crusher, vertical crusher, rotary crusher, cone crusher, roller crusher, double roller crusher, two in one crusher, one forming crusher and so on.
According to the crushing mode, mechanical structure characteristics (action principle) to divide, generally divided into six categories.
(1) Jaw crusher (tiger mouth). Crushing action is by the movable jaw plate periodically pressing to the fixed jaw plate, which will be clamped in the ore block crushing.
(2) cone crusher. The ore block is between the inner and outer cones, the outer cone is fixed, and the inner cone swings eccentrically to crush or break the ore block sandwiched among them.
(3) roll crusher. Ore block in two opposite rotation of the round roller crack, mainly by continuous crushing, but also with grinding and stripping action, toothed roller surface and crushing action.
(4) Impact crusher. The blocks are crushed by the impact of the fast-turning moving parts. Belonging to this category can be divided into: hammer crusher; Cage crusher; Impact crusher.
(5) Grinding machine. The ore is crushed in a rotating cylinder by the impact and grinding of the grinding medium (steel ball, steel rod, gravel or ore block).
(6) Other types of crushing mill.
Mining machinery
Mining machinery is directly mining useful minerals and mining work used in the mechanical equipment, including: mining metal ore and non-metal ore mining machinery; Coal mining machinery used for mining coal; An oil drilling machine used to extract oil. The first typhoon rotary shearer was designed by walker, an English engineer, and built successfully around 1868. In the 1880s, hundreds of oil Wells in the United States were successfully drilled with steam-powered percussion drill. In 1907, roller drill was used to drill oil Wells and gas Wells, and from 1937, it was used for open-pit drilling.
Mining machinery
Mining machinery used in underground and open-pit mining mining machinery: drilling hole drilling machinery; Mining machinery and loading and unloading machinery for digging and loading ore and rock; A driving machine for drilling patios, shafts, and roadways.
Drilling machinery
Drilling machinery is divided into two types of drill and drill, drill and open – pit drill and underground drill.
① Rock drill: used for drilling holes with diameters of 20 ~ 100 mm and depths of less than 20 meters in medium-hard rocks. According to its power, it can be divided into pneumatic, internal combustion, hydraulic and electric rock drill, among which the pneumatic rock drill is the most widely used.
② Open pit drilling machine: according to the different working mechanism of crushing rock, it is divided into steel rope impact drilling machine, submerged drilling machine, roller drilling machine and rotary drilling machine. The steel rope percussion drill has been gradually replaced by other drill RIGS because of its low efficiency.
③ Downhole drilling rig: drilling hole hole less than 150 mm, in addition to the application of rock drill can also be used 80 ~ 150 mm small diameter hole drill.
Excavating machinery
Using the axial pressure and rotary force of the cutter to roll the rock face, the roadway forming or well forming machinery equipment can be broken directly. The tool has disc hob, wedge tooth hob, ball tooth hob and milling cutter. According to the different driving roadway, it can be divided into patio drill, vertical drill and drift boring machine.
(1) The patio drill, specially used for drilling the patio and chute, generally do not need to enter the patio operation, with the roller drill bit to drill the guide hole, with the disc hob reamer reaming up.
(2) The vertical drilling rig is specially used for drilling a well, which is composed of drilling tool system, rotary device, derrick, drilling tool lifting system and mud circulation system.
(3) Roadway excavating machine, it is a comprehensive mechanized equipment that combines mechanical rock breaking and slag discharging processes and continues to excavate. It is mainly used in coal roadway, soft mine engineering tunnel and roadway excavation of medium hardness and above rock.
Coal mining machinery
Coal mining operations have developed from semi-mechanization in the 1950s to comprehensive mechanization in the 1980s. Comprehensive mechanized mining is widely used in shallow cut deep double (single) drum combined shearer (or planer), flexible scraper conveyor and hydraulic self-shifting support and other equipment, so that the mining working face crushing falling coal, coal loading, transportation, support and other links to achieve a comprehensive comprehensive mechanization. Double drum shearer is a falling coal machine. The motor by cutting part of the reducer to transfer the power to the screw drum coal, machine movement by the motor traction part of the transmission device to achieve. There are basically two kinds of traction, namely chain traction and no chain traction. Chain haulage is achieved by meshing the sprocket of the haulage part with the chain fixed on the transport machine.
Oil drilling
Land oil drilling and production machinery. According to the exploitation process, it can be divided into drilling machinery, oil production machinery, workover machinery and fracturing and acidizing machinery to maintain high production of oil Wells. A set of machinery used to drill or drill production Wells for the purpose of developing oil or natural gas. Oil drilling machine, including derrick, winch, power machine, mud circulation system, tackle system, turntable, wellhead device and electrical control system. The derrick is used to install the crown block, moving block and hook, etc., to lift other heavy objects up and down the drilling platform, and to hang the drilling tools in the well for drilling.
Mineral processing machinery
Beneficiation is a process in which useful minerals are selected according to the physical, physical and chemical properties of various minerals from the collected mineral raw materials. The implementation of this process is called beneficiation machinery. Beneficiation machinery according to the beneficiation process is divided into crushing, grinding, screening, separation (separation) and dehydration machinery. Crushing machinery commonly used jaw crusher, rotary crusher, cone crusher, roller crusher and impact crusher, etc. The most widely used grinding machinery is cylindrical mill, including rod mill, ball mill, gravel mill and ultrafine laminated self mill. Screening machinery is commonly used in the inertial vibrating screen and resonance screen. Hydraulic classifier and mechanical classifier are widely used in wet classification. Full section air-lift micro-bubble flotation machine is commonly used in separation and flotation machinery, and the more famous dehydration machinery is multi-frequency dehydration sieve tailings dry discharge system. One of the most famous crushing and grinding systems is the superfine laminated self – mill.
Drying machine
Slime special dryer is a new special drying equipment developed on the basis of drum dryer, which can be widely used in:
1, coal industry slime, raw coal, flotation cleaned coal, mixed cleaned coal and other materials drying;
2, construction industry blast furnace slag, clay, soil, limestone, sand, quartz stone and other materials drying;
3, mineral processing industry all kinds of metal concentrate, waste residue, tailings and other materials drying;
Drying of non-thermal sensitive materials in chemical industry.