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NOV 28 2012

Mining machinery industry

Mining machinery

Mining machinery industry

Mining machinery industry by the use of the machine is directly used for mineral mining and rich selection operation of machinery. Including mining machinery and mineral processing machinery. Prospecting machinery work principle and structure of the similar mineral mining for mining machinery were mostly identical or similar, broadly speaking, prospecting machinery also belongs to the mining machinery. In addition, mine operations is also used massive crane, conveyor, ventilation and drainage machinery.

Mechanical classification

Mining machinery

Mining machinery is the direct extraction of useful minerals and mining working with machinery and equipment mining machinery industry, is also the most common equipment. Include: Mining of metal ore and non metal ore mining machinery; mining coal with coal mining machinery; mining oil used in oil drilling machinery. The first pneumatic disc shearer is Walker designed by British engineers, ca. in 1868 manufacturing success. Eighteen eighties, the United States has hundreds of oil wells using steam power impact drill drilling success, 1907, and rock drill in drilling oil and gas wells, and from 1937 onwards, it will be used for open pit mine drilling.

Mining machinery

Mining machinery for underground and open pit mining mining machinery: drill hole by using drilling machinery; digging ore rock in mining machinery and machinery; drilling shaft and drift patio, with boring machine.

Drilling machine

Drilling machine for drilling machine and drilling machine two, drill and open-air drilling and underground drill points. ①drill: used in the above medium hard rock drilling diameter of 20 mm to 100 mm, at 20 meters depth of blasting hole. According to its power can be divided into different pneumatic, hydraulic and electric power, internal combustion rock drill pneumatic rock drill, which is most widely used. ②openpit drill : according to the rock breaking mechanism different, divided into rope impact drill, drill, rotary blast hole drill. Cable percussion drill rig for low efficiency, has gradually been replaced other rig. The downhole drilling: drilling pore size of less than 150 mm underground hole, besides the application of drilling machine can also be used from 80 to 150 mm small diameter DTH drill.

Boring machine

Using the tools of the axial pressure and rotating force on the rock surface rolling effect, direct rock breaking into the lane or well machinery and equipment. The knife has a disc cutter, the wedge tooth hobbing, spherical tooth hob and milling cutter. According to the different excavation roadway, divided into raise drill, drill shaft and tunnel boring machine. ①patio driller for drilling wells, specialized and the chute, generally do not need to enter the courtyard, with roller cone drill bit to drill hole orientation, with the disc cutter reamer reaming to composition. ②shaft drilling machine specially used for a drilling well, the drilling tool system, rotary device, derrick, drilling hoisting system and mud circulating system. The tunnel boring machine, which is mechanical rock breaking and discharging processes of combining continuous mining machinery, mainly used for coal roadway in soft coal mine, the engineering tunnel and secondary hard rock in roadway excavation.

Coal mining machinery

Coal mining operations already by 50 time half mechanization development to 80′s comprehensive mechanization, it in the mining machinery industry is the highest qualification. The comprehensive mechanized coal mining is widely used in shallow cutting depth type double ( single ) drum shearer loader ( or plane ), flexible scraper and hydraulic self-moving bracket and other equipment, so that the working face of coal, coal transportation, broken, support and other aspects of the realization of comprehensive mechanization. Double drum coal shearer is falling coal machinery. Motor speed reducer through the cutting part of the power transmission to the spiral roller falling coal, machine by moving the motor via a driving device to realize the traction part. Traction mode basically has two kinds, namely the cable traction and no chain traction. Cable traction with traction portion of the sprocket and secured to the conveyor chain engagement and realization.

Oil drilling machinery

The land of oil drilling machinery. According to the mining process is divided into drilling machinery, oil machinery, machinery and maintenance of oil well workover and fracturing, acidizing machinery. Drilling machinery for the development of an oil or gas well while drilling or production of a full set of machinery and equipment. Petroleum drilling machine, including derrick, winch, power machine, mud circulating system, a pulley device, system, turntable, wellhead equipment and electrical control system. Derrick crane for device, the travelling block and hook, lifting the other weight under suspension rig, drilling tool for drilling.

Processing machinery

Dressing is in the collection of mineral raw materials, according to mineral properties, physical and chemical properties and chemical properties between selected useful mineral process. Implementation of this process are called beneficiation machinery. Beneficiation machinery according to the ore dressing process for crushing, grinding, screening, separation ( separation ) and dehydrating machine. Broken machinery common jaw crusher, gyratory crusher, cone crusher, roll crusher and impact crusher etc.. Grinding machine the most widely used is the drum mill, rod mill, ball mill, including gravel grinder and superfine laminated self grinder. Screening machine used in the inertia vibrating screen and resonance screen. Hydraulic classifier and mechanical classifier is widely used in wet type grading grading machine. Separation flotation machine used a full section airlift micro-foam flotation machine, dehydrated machine comparison is famous for multi-frequency dewatering screen tailings dry discharge system. Crushing and grinding system more famous is the superfine laminated autogenous mill.

Drying machinery

Slime drying apparatus for in cylinder dryer is developed on the basis of a new special drying equipment, drying machinery in mining machinery industry is not very common. Can be widely used in: 1, the coal industry, coal slime flotation clean coal, mixed coal, such as drying; 2, the construction industry blast furnace slag, clay, bentonite, limestone, sand, quartz stone material drying; 3, all kinds of metal ore beneficiation industry, waste slag, tailings material drying; in 4, the chemical industry of thermosensitive material drying.

Working principle

Mining machinery according to various models of different, its working principle and the characteristics of. Drilling machine for drilling machine and drilling machine two, drill and open-air drilling and underground drill points. Rock drilling machine is used in the above medium hard rock, drilling diameter of 20 mm to 100 mm, at 20 meters depth hole machine, according to its power can be divided into different pneumatic, hydraulic and electric power, internal combustion rock drill pneumatic rock drill, which is most widely used in open-pit drill; rock breaking work the different mechanism, divided into rope impact drill, drill, rotary blast hole drill, wherein the rope impact drill for low efficiency, has gradually been replaced other rig. Boring machine is the use of the tool axial pressure and rotating force on the rock surface to produce rolling effect, direct rock breaking into the lane or well drilling machinery and equipment. The knife has a disc cutter, the wedge tooth hobbing, spherical tooth hob and milling tool. According to the different excavation roadway, can be divided into raise drill, drill shaft and tunnel boring machine centrifugal concentrating machine is used for the recovery of fine slime metal particle machine, mainly composed of a host machine and a control mechanism is composed of two parts. Conical drum in host generated by high speed rotation in a centrifugal force field, heavy mineral grains deposited onto the drum wall become concentrate, light mineral particles attached to concentrate surface, by flow membrane ( pulp flow ), discharged from the drum, a tailings.

Magnetic separator is the use of a variety of mineral magnetism difference, by means of the magnetic force and mechanical force on the effect of mineral separation machinery. Magnetic separator is composed of a magnetic system, sorting device, feeding and discharging device. Magnetic separator of many kinds, mainly permanent magnet drum separator, an electromagnetic flat ring high intensity magnetic separator and the high gradient magnetic separation machine. Flotation machine is the use of particle surface difference of physicochemical properties, for fine separation of minerals machinery. Mineral particles flotation machine with flotation reagent, by compressed air or by mechanical agitation, which is not easily water wettability of the particles attached to the bubble ( positive flotation method), rose to the surface, through the discharging device as a concentrate discharging, wettable by water in the tank as the mineral particles in tailings discharge. Wet dressing concentrate obtained by dehydration machinery processing, in order to make solid, liquid separation. Dehydration machinery can be classified as thickener, filter, centrifugal dewatering machine and drying machine.