Mining Machinery Introduction Machinery production factory trading Current situation and prospects of mining machinery

There are seven major categories of mining machinery industry in China, with about 300 varieties and thousands of specifications of products. Since 2000, driven by the rapid development of domestic basic industries and infrastructure, the market demand for mining machinery products has been strong. In 2010, the sales of China's mining machinery industry exceeded 400 billion yuan. So far, China has surpassed North America, Japan, and Western Europe to become the world's largest mining machinery market.
The mining machinery industry occupies a pillar position in the national economy and plays a great role and contributes to economic construction. Whether from the current market development status of China's mining machinery industry or from the global industry operation situation, China's mining machinery industry is in a historic window period. The next 5-10 years will be an important period for Chinese mining machinery companies to fully or deeply integrate into the world and develop together with the world, and the industry has a good development prospect. It is estimated that by the end of the "12th Five-Year Plan", the sales scale of China's mining machinery industry will reach 900 billion yuan, and the export volume will exceed 26 billion US dollars.

Crushing equipment
Crushing equipment is a mechanical device used to crush minerals.
Crushing operations are often divided into coarse crushing, medium crushing and fine crushing according to the size of the feed and discharge particles. Commonly used sand and gravel equipment includes jaw crusher, impact crusher, impact crusher, compound crusher, single-stage hammer crusher, vertical crusher, gyratory crusher, cone crusher, roller crusher, double roller crusher, two-in-one crusher, one-time forming crusher, etc.
According to the crushing method and the structural characteristics (operating principle) of the machine, it is generally divided into six categories.
(1) Jaw crusher (tiger mouth). The crushing action is to rely on the movable jaw plate to periodically press against the fixed jaw plate to crush the ore blocks sandwiched between them.
(2) Cone crusher. The ore blocks are located between the inner and outer cones. The outer cone is fixed and the inner cone swings eccentrically to crush or break the ore blocks sandwiched between them.
(3) Roller crusher. The ore blocks are mainly subjected to continuous crushing in the gap between two counter-rotating rollers, but also to grinding and stripping, and the toothed roller surface also has a splitting effect.
(4) Impact crusher. The ore blocks are crushed by the impact of the rapidly rotating moving parts. This category can be divided into: hammer crusher; cage crusher; impact crusher.
(5) Grinding mill. The ore is crushed by the impact and grinding of the grinding media (steel balls, steel bars, gravel or ore blocks) in the rotating cylinder.
(6) Other types of crushing and grinding mills

Mining machinery
Mining machinery is mechanical equipment used for directly mining useful minerals and mining work, including: mining machinery for mining metal ores and non-metallic ores; coal mining machinery for mining coal; oil drilling machinery for mining oil. The first pneumatic disc coal mining machine was designed by British engineer Walker and successfully manufactured around 1868. In the 1880s, hundreds of oil wells in the United States were successfully drilled with steam-powered impact drills. In 1907, rotary drills were used to drill oil wells and natural gas wells, and since 1937, they have been used for open-pit mine drilling. With the advancement of technology, new hydraulic fracturing technology has gradually been introduced to the market. Hydraulic fracturing is also called water fracturing. Water fracturing rock and concrete technology is a new technology for non-explosive crushing of rock mass, rock blocks and concrete structures (components). It is an engineering equipment that separates rock blocks from the rock mass or breaks them into smaller pieces by filling high-pressure water into a tubular sealed elastic expander inserted into the borehole and using the huge expansion force generated by the pressure energy to do work.

Mining machinery
Mining machinery used in underground and open-pit mining includes: drilling machinery for drilling blastholes; excavation machinery and loading and unloading machinery for digging and loading ore and rock; and tunneling machinery for drilling and digging shafts, shafts and horizontal lanes.

Drilling machinery
Drilling machinery is divided into two categories: rock drills and drilling rigs. Drilling rigs are further divided into open-pit drilling rigs and underground drilling rigs.
① Rock drill: used to drill blastholes with a diameter of 20 to 100 mm and a depth of less than 20 meters in medium-hard rocks. According to their power, they can be divided into pneumatic, internal combustion, hydraulic and electric rock drills, among which pneumatic rock drills are the most widely used.
② Open-pit drilling rigs: According to the different working mechanisms for crushing ore and rock, they are divided into steel rope impact drills, down-the-hole drills, rotary drills and rotary drills. Steel rope impact drills have been gradually replaced by other drilling rigs due to their low efficiency.
③ Underground drilling rigs: When drilling underground blastholes with a diameter less than 150 mm, in addition to rock drills, 80

Tunneling machinery
Using the axial pressure and rotational force of the cutter to roll the rock surface, the mechanical equipment for directly crushing the ore rock into a lane or well. The cutters used include disc cutters, wedge-tooth cutters, ball-tooth cutters and milling cutters. According to the different tunnels, they are divided into skylight drilling rigs, shaft drilling rigs and horizontal tunneling machines.
① Skylight drilling rigs are specially used for drilling skylights and chute wells. Generally, it is not necessary to enter the skylight for operation. The pilot hole is first drilled with a roller drill bit, and the hole is expanded upward with a reamer composed of disc cutters.
② Vertical shaft drilling rigs are specially used for drilling wells in one go. They are composed of a drilling tool system, a rotary device, a derrick, a drilling tool lifting system and a mud circulation system.
③ Horizontal tunneling machine, which is a comprehensive mechanized equipment that combines mechanical rock breaking with slag removal and other processes and continuously excavates. It is mainly used for coal tunnels, engineering tunnels in soft mines and medium horizontal tunnels in medium-hardness or above ore rocks.

Coal mining machinery
Coal mining has developed from semi-mechanized in the 1950s to comprehensive mechanization in the 1980s. Comprehensive mechanized coal mining widely uses shallow-cutting double (single) drum combined coal mining machines (or coal planers), flexible scraper conveyors and hydraulic self-moving supports, etc., so that the crushing, coal dropping, coal loading, transportation, support and other links of the mining face can be fully mechanized. The double drum coal mining machine is a coal dropping machine. The motor transmits power to the spiral drum coal dropping through the cutting part reducer, and the movement of the machine is achieved by the motor through the traction part transmission device. There are basically two traction methods, namely anchor chain traction and anchorless traction. Anchor chain traction is achieved by the engagement of the sprocket of the traction part with the anchor chain fixed on the conveyor.

Oil drilling and production
Land oil drilling and production machinery. According to the production process, it is divided into drilling machinery, oil production machinery, well repair machinery and fracturing and acidizing machinery to maintain high oil well production. Drilling machinery is a complete set of mechanical equipment for drilling or drilling production wells for the development of oil or natural gas. Oil drilling rigs include derricks, winches, power machines, mud circulation systems, pulley device systems, turntables, wellhead devices and electrical control systems. The derrick is used to install overhead cranes, traveling pulleys and large hooks, etc., to lift other heavy objects up and down the drilling platform, and to suspend drilling tools in the well for drilling.

Ore dressing machinery
Ore dressing is the process of selecting useful minerals from the collected mineral raw materials according to the differences in the physical properties, physicochemical properties and chemical properties of various minerals. The process is called ore dressing machinery. Ore dressing machinery is divided into crushing, grinding, screening, sorting (selection) and dewatering machinery according to the ore dressing process. Commonly used crushing machinery includes jaw crusher, gyratory crusher, cone crusher, roller crusher and impact crusher. The most widely used grinding machinery is drum mill, including rod mill, ball mill, gravel mill and superfine laminated autogenous mill. Commonly used screening machinery includes inertial vibrating screen and resonance screen. Hydraulic classifier and mechanical classifier are widely used classification machinery in wet classification operations. Commonly used sorting and flotation machinery includes full-section airlift microbubble flotation machine, and the more famous dewatering machinery is multi-frequency dewatering screen tailings dry discharge system. The more famous crushing and grinding system is superfine laminated autogenous mill.

Drying machinery
The coal slime dryer is a new type of special drying equipment developed on the basis of the drum dryer. It can be widely used in:
1. Drying of coal slime, raw coal, flotation clean coal, mixed clean coal and other materials in the coal industry;
2. Drying of blast furnace slag, clay, bentonite, limestone, sand, quartz stone and other materials in the construction industry;
3. Drying of various metal concentrates, waste slag, tailings and other materials in the mineral processing industry;
4. Drying of non-heat-sensitive materials in the chemical industry.
Automation

1. Preparation before installing the vibrating screen:
Before installing the new vibrating screen equipment, you should carefully check it. Since the finished product inventory has been stored for a long time, such as rusty bearings, aging seals, or damage during transportation, new parts need to be replaced when these problems occur. In addition, for example, the vibrator is injected with anti-rust oil before leaving the factory for rust prevention, and it should be replaced with lubricating oil before it is officially put into operation. You should read the instructions carefully before installation and make full preparations.
2. Installation of vibrating screen:
3. Test run of vibrating screen:
After the screening machine is installed, it should be tested with an empty car to initially check the installation quality and make necessary adjustments.

Development trend:
Globalized large-scale production has become the mainstream of the development of major multinational companies. While constantly combining and restructuring to expand their competitive strength, major companies have also strengthened their investment and R&D in their main businesses, and continuously improved their system set capabilities and personalized and diversified market adaptability.
First, the status is becoming more basic
Developed countries attach great importance to the development of the equipment manufacturing industry. Not only does it account for a large proportion, accumulation, employment, and contribution in their own industries, but it also provides an important material basis for the development and production of new technologies and new products. It is an indispensable strategic industry for the modern economy. Even industrialized countries that are entering the "information society" attach great importance to the development of the machinery manufacturing industry.
Second, the development is extremely unbalanced and regional development is intensified. Taking 2003 as an example, the top 500 companies in the world in terms of sales are almost from North America, Asia, and Europe, accounting for as much as 99%, showing the unparalleled dominance of the three continents in the development of the world's machinery industry.
Third, cross-border mergers and acquisitions in the machinery manufacturing industry are intensifying. Modern mergers and acquisitions no longer emphasize confrontation with competition. The main means for strong companies to gain competitive advantages is to form strong alliances. This is a major feature of large companies seeking survival and development in the process of globalization of the machinery manufacturing industry. And the market is becoming saturated. The increasingly fierce market competition. The increased risk of investing in factories has also led more companies to adopt joint mergers and acquisitions. Under the premise of building factories, optimize the product structure of enterprises to achieve the purpose of improving production capacity, expanding market share, and obtaining economies of scale. The threat of technological innovation in industries with high technology connotations has led multinational companies to join forces to form strong technological innovation capabilities. Strategic mergers and acquisitions between large enterprises in the machinery manufacturing industry have led to the reconfiguration of machinery industry resources. This has led to a collaborative situation in the competition pattern of the world machinery industry.
Fourth, structural adjustment has been further deepened, and production methods and management models are undergoing profound changes
Developed countries have increased the intensity of industrial transfer, and low-value-added products in mechanical products have been arranged to be produced in developing countries with potential market demand: In order to adapt to changes in market demand, major manufacturers have adopted specialized production, and "single variety, large batch" has become a new feature of the production methods of many Fortune 500 companies; at the same time, the producer-led production method has gradually shifted to the consumer-led customized production method. The personalization of services has become an important factor in the success or failure of competition