Sand sorting machine

1. Classification of mining machinery
crushing equipment
crushing equipment is the mechanical equipment used to crush minerals
crushing operations are usually divided into coarse crushing, medium crushing and fine crushing according to the size of feeding and discharging particles. The commonly used sand and stone equipment include jaw crusher, impact crusher, impact crusher, compound crusher, single stage hammer crusher, vertical crusher, rotary crusher, cone crusher, roller crusher, double roller crusher, two in one crusher, one-time molding crusher, etc
it can be divided into six categories according to crushing mode and mechanical structure characteristics (action principle)
(1) jaw crusher (tiger mouth). The crushing action is that the movable jaw plate periodically presses the fixed jaw plate to crush the ore block sandwiched in it< (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
(3) roller crusher. In the gap between two opposite rotating round rollers, the ore block is mainly crushed continuously, but it also has the function of grinding and stripping, and the toothed roller surface also has the function of splitting
(4) impact crusher. The ore block is broken by the impact of fast rotating moving parts. Belong to this category can be divided into: hammer crusher; Cage crusher; Impact crusher
(5) grinding machine. The ore is crushed by the impact and grinding of grinding medium (steel ball, steel bar, gravel or ore block) in the rotating cylinder
(6) other types of crushers and grinders
mining machinery
mining machinery is the mechanical equipment used for directly mining useful minerals and mining preparation, including: mining machinery for mining metal ores and non-metal ores; Coal mining machinery for mining coal; Oil drilling and proction machinery for oil proction. The first pneumatic disc shearer was designed by the British engineer Walker and manufactured in 1868. In the 1880s, hundreds of oil wells in the United States were successfully drilled by steam powered percussion drilling. In 1907, the roller drill was used to drill oil wells and natural gas wells. Since 1937, it has been used to drill open-pit mines< Mining machinery
the mining machinery used in underground and open-pit mines include: drilling machinery for drilling blastholes; Mining machinery and loading and unloading machinery for mining and loading rocks; Boring machine for drilling raise, shaft and drift< Drilling machinery can be divided into rock drill and drilling machine, and drilling machine can be divided into open-pit drilling machine and underground drilling machine
① rock drill: it is used to drill blastholes with a diameter of 20-100 mm and a depth of less than 20 m in medium hard rock. According to its power, it can be divided into pneumatic, internal combustion, hydraulic and electric rock drills, among which pneumatic rock drill is the most widely used
② surface drilling rig: according to the working mechanism of crushing ore and rock, it can be divided into wire rope percussion drilling rig, down the hole drilling rig, cone drilling rig and rotary drilling rig. Because of the low efficiency, the wire rope percussion drill has been graally replaced by other drills
③ downhole drilling machine: when drilling borehole with diameter less than 150 mm, in addition to rock drill, 80-150 mm small diameter down the hole drill can also be used
roadheader
it is a kind of mechanical equipment for directly crushing ore and rock by using the axial pressure and rotary force of the cutter to roll the rock surface. The cutter used includes disc hob, wedge hob, ball hob and milling cutter. According to the different driving roadway, it is divided into raise boring machine, shaft boring machine and drift boring machine
① raise boring machine is specially used for drilling raise and pass. Generally, it doesn't need to enter the raise for operation. The guide hole is drilled with a cone bit, and the hole is enlarged upward with a reamer composed of disc hobs
② the vertical drilling rig is specially used for drilling a well at one time, which is composed of drilling tool system, rotary device, derrick, drilling tool lifting system and mud circulation system
③ drift digger is a comprehensive mechanized equipment which combines mechanical rock breaking and slag removal and continuously dries. It is mainly used for tunneling in coal roadway, engineering tunnel in soft mine and middle drift with medium hardness and above
coal mining machinery
coal mining operation has developed from semi mechanization in 1950s to comprehensive mechanization in 1980s. Comprehensive mechanized coal mining is widely used in shallow cut double (single) drum combined shearer (or plough), flexible scraper conveyor, hydraulic self moving support and other equipment, so as to realize comprehensive mechanization in crushing, coal dropping, coal loading, transportation, support and other aspects of mining face. The double drum shearer is a coal dropping machine. The motor transmits the power to the screw drum through the cutting part recer, and the movement of the machine is realized by the motor through the driving device of the traction part. There are basically two ways of traction, namely, anchor chain traction and non anchor chain traction. Anchor chain traction is realized by the engagement of the sprocket of the traction part and the anchor chain fixed on the conveyor
oil drilling and proction
onshore oil drilling and proction machinery. According to the proction process, it is divided into drilling machinery, oil proction machinery, workover machinery and fracturing and acidizing machinery to maintain high proction. A complete set of mechanical equipment for drilling or drilling proction wells for the development of oil or natural gas. Oil drilling machine, including derrick, winch, power machine, mud circulation system, pulley system, rotary table, wellhead device and electrical control system. The derrick is used to install crown block, traveling block and hook, lift other heavy objects up and down the drill floor, and hang drilling tools in the well for drilling
mineral processing machinery
mineral processing is a process of selecting useful minerals from the collected mineral raw materials according to the differences of physical, physical and chemical properties of various minerals. The process is called mineral processing machinery. According to the beneficiation process, beneficiation machinery is divided into crushing, grinding, screening, separation (separation) and dewatering machinery. Jaw crusher, rotary crusher, cone crusher, roller crusher and impact crusher are commonly used in crushing machinery. Cylinder mill is the most widely used in grinding machinery, including rod mill, ball mill, gravel mill and ultra-fine laminated autogenous mill. Inertia vibrating screen and resonance screen are commonly used in screening machinery. Hydraulic classifier and mechanical classifier are widely used in wet classification. The commonly used separation flotation machine is full section airlift micro bubble flotation machine, and the well-known dewatering machine is multi frequency dewatering screen tailings dry discharge system. Superfine laminated autogenous mill is more famous in crushing and grinding system<
drying machinery
the special dryer for slime is a new type of special drying equipment developed on the basis of drum dryer, which can be widely used in the drying of slime, raw coal, flotation clean coal, mixed clean coal and other materials in coal instry
2. Drying of blast furnace slag, clay, bentonite, limestone, sand, quartzite and other materials in construction instry
3. Drying of various metal concentrates, waste resie, tailings and other materials in mineral processing instry
4. Drying of non heat sensitive materials in chemical instry.

3. What are the mining equipment and its use
new equipment
ultra-fine laminated autogenous mill
full cross-section airlift micro bubble flotation machine
multi frequency dewatering screen tailings dry discharge
there are many professional mechanical equipment that will be applied in mining operation, which can be roughly divided into mining equipment, mineral processing equipment and prospecting equipment. Mining machinery refers to the machinery directly used for mineral mining and enrichment, including mining machinery and mineral processing machinery. The working principle and structure of prospecting machinery are mostly the same or similar to mining machinery, which is also a kind of mining machinery in a broad sense. A large number of cranes, conveyors, ventilators and drainage machines are also used in mining operations
mining equipment
tunneling includes roadheader / gangue raker / belt conveyor / transfer / crusher, and mining equipment includes shearer, drum shearer, plough, bending scraper conveyor, self moving hydraulic support, bridge conveyor and telescopic belt conveyor / hydraulic support / scraper conveyor, etc.
including mining machinery for mining metal ore and non-metal ore; The oil drilling and proction machinery used for oil exploitation, such as drum shearer, plough, bending scraper conveyor, self moving hydraulic support, bridge type transfer machine and telescopic belt conveyor, can be divided into crushing machinery (cone crusher, jaw crusher, box crusher, impact crusher, etc.), grinding machinery, screening machinery, grinding machinery, grinding machinery, grinding machinery, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding Separation (separation) machinery and dehydration machinery, as well as a variety of proction lines. According to the principle of action, the separation machine is divided into gravity separation machine, magnetic separator, flotation machine and special separation machine. Mineral processing machinery is also used in building materials, chemical instry, glass, ceramics and other instrial sectors. Mineral processing is the process of selecting useful minerals from the collected mineral raw materials according to the differences of physical properties, physicochemical properties and chemical properties of various minerals. The machinery that implements this process is called beneficiation machinery. According to the beneficiation process, beneficiation machinery is divided into crushing, grinding, screening, separation (separation) and dehydration machinery
exploration equipment
mainly includes rotary drilling rig, rotary vertical shaft drilling rig, derrick (drill tower), winch, power engine (motor, diesel engine), mud pump and other equipment, as well as manipulator and pipe twisting machine and other ancillary equipment.

4. 1. The importance of reasonable sand return quantity
generally speaking, the sand return quantity of spiral classifier is several times larger than the original feeding quantity, at least equal to 200% of the original feeding quantity, sometimes even as high as 600%. The reason why it is controlled to such a high level is that increasing the amount of return sand within a certain range can rece the over grinding and improve the proction capacity of the ball mill. However, the amount of sand return should not be too large, otherwise, the ball mill and classifier will be overloaded and the operation will be difficult. Especially when the amount of return sand is so large that the sum of it and the original ore feed exceeds the passing capacity of the ball mill, the ball mill will be blocked and unable to work normally. Therefore, in the closed-circuit grinding operation, in order to maintain stable proction and obtain good grinding effect, the return sand ratio must be controlled in an appropriate range
2. The relationship between the amount of returned sand and ore feed
when the grading overflow particle size remains constant, the amount of returned sand depends on the original ore feed to the ball mill. With the increase of ore feeding, the speed of materials passing through the ball mill is accelerated, and the discharge particle size becomes coarser, which increases the amount of sand return. On the contrary, the amount of sand return decreases, so a certain amount of ore feeding must have a certain amount of sand return. Therefore, by understanding the change of the amount of returned sand in the classifier, we can judge the change of the original feeding and other grinding conditions of the ball mill
3. Method for determining the amount of returned sand
through sampling and screening, the percentage of a specified particle size in the classifier feeding, overflow and returned sand is measured, and then the original feeding amount of ball mill is used to calculate according to the principle of material balance< 4. Calculation method of return sand volume
calculation principle of return sand ratio in concentrator α－ The yield of a given size fraction in ball mill discharge is%; β－ The yield of the above specified size fraction in the classifier overflow is%; ν－ The yield of the above specified size fraction in the classifier returned sand is%; C - sand return ratio. If the original feed rate of the mill is 100%, the overflow of the classifier is also 100%. According to the "material balance" formula: (100 + C) α= ν C＋100 β Therefore, the sand return ratio: C = [100] β－α/α－ν]× When 100% is calculated, it can be calculated according to the yield of indivial particle size or the cumulative yield. If the calculated results vary greatly according to different particle size, it may be that the sample is not representative enough, and it is necessary to take another sample for screening. When the difference between the calculated results is not large, the average value of C calculated by each grade is taken as the sand return ratio of the classifier.

5. Mine crusher is also called "crusher" in the sand and stone instry. There are many types and series. Different models have unique advantages in crushing all kinds of stones. How much is the mine crusher? We need to know the performance of the equipment as well as the price
classification and performance characteristics of mine crushers
according to different discharging materials, mine crushers can be divided into coarse crushing, medium crushing and fine crushing equipment, which can meet the crushing of more than 100 kinds of materials and adapt to various fields. According to different structures and principles, there are several popular equipment, such as jaw breaking, impact breaking, cone breaking and hammer breaking
EPPO: feed particle size: ≤ 1000mm, proction capacity: 65-1250t / h
Application: it is mainly suitable for coarse crushing of materials, applicable materials: River pebble, granite, basalt, iron ore, limestone, quartz, diabase, construction waste, iron ore, gold ore, etc
impact breaking: feed size: ≤ 800mm, proction capacity: 30-800t / h
it is mainly used for jaw crusher's next crushing (medium crushing and fine crushing), and can handle various coarse, medium and fine materials (granite, limestone, concrete, etc.) with side length not exceeding 500mm and compressive strength not exceeding 350Mpa, which is suitable for crushing soft materials< Cone crushing: feed particle size: ≤ 560mm, proction capacity: 36-2181t / h
laminated crushing, suitable for crushing various ores and rocks with medium hardness or above, mostly used in mineral processing crushing, large stone plants with low discharge requirements and large output in mining instry
hammer crushing: feed particle size: ≤ 1700mm, proction capacity: 100-3200t / h
layered crushing, It can be used for medium and fine crushing, crushing + shaping, one-time forming, without one-stage and two-stage crushing, saving 40% of investment cost, and is suitable for handling brittle materials
how much is the mine crusher
how much is the mine crusher? On this issue, I know many users want to come up and ask for an answer directly. However, because there are many types of mine crushers, they can't give a unified price without understanding the user's needs. The mine crushers proced by Hongxing's own factory are more affordable. They are all factory prices. You can buy them for tens of thousands of yuan cheaper, and you can buy them for hundreds of thousands or hundreds of thousands more expensive, In order to rece the investment cost, users should make a reasonable combination according to their own proction demand, proction output, scale and so on.

6. When you encounter fraud, you must report it to the Public Security Bureau. Let the Public Security Bureau solve this problem for you. The host will share it with the circle of friends and tell you not to be cheated again.

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8. Network financial management should be cautious, investment risk
if the network is defrauded, it is necessary to report to the police in time and tell the police the details of the defrauded information. The police will investigate and collect evidence according to the information provided by you
if the police find that you have been defrauded through the investigation and evidence collection of the information provided by you, and the amount of money defrauded reaches the minimum standard for filing a case, they will file a case for investigation and help you recover it
if you are cheated, you need to rely on the police to help you recover. Don't believe what anyone says can help you. The person who says can help you is a liar. Don't believe it to avoid being cheated again.

9.

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