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Established in 1965, Zhengzhou Global Heavy Machinery Group Co., Ltd. is a manufacturer of mining equipments such as crushers, grinders, sand making machines, sand washing machines, vibrating screens, vibrating feeders, Pulverizerbelts, conveyors and ball mills.
Located in the city of Zhengzhou, we own a manufacturing facility covering 68,000 square meters, where we employ more than560 employees. Moreover, we utilize advanced design, development, manufacturing and testing equipment in order to produce the best possible mining equipment. We achieved an annual revenue of RMB90,000,000 and an export amount of USD5,200,000 in 2004.
Strictly adhering to national and international quality standards and providing excellent customer service, our products have gained a strong reputation among our customers. As a result, our products are exported to India, Vietnam, Kazakhstan and Mongolia and other countries and areas.
Working to achieve mutual benefits with clients, we welcome customers around the world to take a look at our website or contact us directly for more details. We look forward to having the opportunity of becoming your supplier in the near future. |
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Jaw Crusher:
Jaw Crusher is mainly used to crush kinds of mining stones primarily, and the largest compression resistance of the material to be crushed is 320MPa. The jaw crusher is widely used in mining, metall-urgical industry, building material, highway, railway, and chemical industry.
Working Principle of Jaw Crusher:
The motor transmits power through belt, drives the moving jaw do periodic motion to the fixed jaw surround the eccentric shaft. The angle between toggle plate and moving jaw increases when moving jaw moves up. So the moving jaw closes to the fixed jaw. The stuff will be crushed in this process. The angle of Jaw Crusher between toggle plate and moving jaw decreases when moving jaw moves down, the moving jaw of Jaw Crusher moves away from fixed jaw by the pulling of rod and spring, the products after crushing will be discharged from the outlet of Jaw Crusher.
Characteristics of Jaw Crusher:
High ratio of crushing, homogeneous final grain size, simple structure, reliable working condition, easy maintenance, low operating cost.
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Ball Mill:
The ball mill is a key equipment to grind the crushed materials, and the ball mill is widely used in powder-making production line including cement, silicate, new-type building material, refractory material, fertilizer, ore dressing of ferrous metal and non-ferrous metal, glass ceramics, etc, and the ball mill can grind various ores and other materials with dry type and wet type. There are two kinds of ball mill, grate type and overfall type due to different ways of discharging material.
Working Principle:
The ball mill is a horizontal rotating device transmitted by the outer gear. The materials are transferred to the grinding chamber through the quill shaft uniformly. There are ladder liner and ripple liner and different specifications of steel balls in the chamber. The centrifugal force caused by rotation of barrel brings the steel balls to a certain height and impact and grind the materials. The ground materials are discharged through the discharging board thus the grinding process is finished.
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Fuctions of Direct Fired Drier
Direct Fired Drier (also called Rotating Bowl Drier) is widely used in building material, metallurgy, chemical industry, cement to dry the slag, limestone, coal powder, clay, etc. It mainly consists of lifting blade, transmission device, supporting device, seal ring , etc. It is of simple structure , polished manufacture , high capacity , low consumption, convenient transport and so on.
We will install the equipment for free, also to do consignment for customers. We are confident to be appraised with other companies in quality, service, and price. |
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Raymond Mill:
Raymond mill produced by our company is mainly used to grind non-inflammable and non-explosive materials with Moh’s hardness below 7 and moisture content below 6% such as barite, calcite, potash feldspar, talcum, marble, limestone, ceramic, glass, etc Raymond grinder can be used in mining, chemical industry, construction materials, metallurgy and so on. The final products can be adjusted freely from 100 mesh to 425 mesh.
Working Principle of Raymond Grinder:
Firstly, raw material is crushed by jaw crusher to the size required, then elevated into a hopper from which the material is transported through the electro-magnetic vibrating feeder evenly and continuously into the grinding chamber for powder-processing. The rollers oscillate outward to press the ring because of the centrifugal force and the shovel scoops up the materials, send to the middle between the ring and rollers to accomplish the grinding.After grinding, the rough materials will be recycled by the air from the fan back into the grinding chamber for regrinding and the fine powders are blew into the cyclone and poured out through the output-powder pipe as the final products.
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Sand Making Machine:
Sand Making Machine(namely PCL Vertical shaft impact crusher) is of high-power and low-consumption, which is designed depending on several years hard work and study of mechanical mining equipment. Sand Maker absorbed the advanced technology of the same products of Barmac Company of America, now is of the international level. Sand Making Machine plays an important role in crushing minerals into pieces. PCL Vertical shaft impact crusher is widely used in all kinds of mineral, cement, corhart, bauxite chmotte, carborundum grain, glass raw material, machine made construction sand, stone stock and all kinds of metallurgy slag, especially carborundum, sintered bauxite, magnesite, and so on material with features of very hard and anticorrosion. And Sand Making Machine is more productive than other kind of crushers.
Working Principle Of Sand Maker :
Stone less than 50mm enters sand making machine though conveyor belt. Stone is crushed by hitting other stones. Material falls down to impellor cavity. Under great centrifugal force, it hits material that coming downwards. After hitting each other, they force a vortex between impellor and shell, and hit each other several times, finally smaller stone comes out, and goes to vibrating screen. Satisfactory material is transported to sand washing machine, however overlarge material will go back to sand maker to be recrushed. Output sizes can be made according to customers requirement. If input size is larger than the designed size, other crushing equipment will be necessary.
Characteristics of Sand Maker:
Simple structure and low operating cost;
High efficiency and low consumption;
Sand Making Machine has the function of fine crush and crude grinding;
Slightly influenced by the moisture content of material, and the max moisture content is 8%;
More suitable for crushing mid-hardness and high-hardness materials;
Cubic shape of final products, high density of piling up and low iron pollution;
More wearable and easy maintenance;
Low working noise and light dust pollution. |
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Sand Washing Machine:
This series XSD Sand Washing Machines are a kind of water washing style equipment to be matched with the sand making machine and can reduce the dust and stone powder which mixes with the final sand, so sand making machine can improve the quality of the sand. XSD series Sand making machine is used in building plant, quarry, concrete plant, dam building, casting-70 sand, glass factory’s quartz sand and refilling pressure sand.
Working Principle of Sand Washing Machine:
The electric motor runs slowly with the impellor after decelerated by the belt, decelerator and gears wheel. The sand and stone flow into washing launder from feeding launder, rolls with the impellor, and grinds each other. The impurity covering the sand is washing away. At the same time, add more water, the strong water flow will take away waste and some low-weight wastes from washing launder. Through the above process, the washing function is finished. The clean sand and stone is lift up by vane. When it goes up slowly, the water begins to drop through the mesh and fall back in the washing launder. On one hand, water is removed from the sand and stone; on the other hand, the water can be fully used. Finally, the sand and stone goes to the out launder from the rotary impellor to finish the washing task.
Characteristics of Sand Washing Machine:
Reasonable structure, large capacity, low consumption, little loss of the sand during the washing process, low failure rate.
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Vibrating Screen:
The Vibrating Screen (Vibratory Screen) is of many layers and high efficiency. The vibratory screen adopts the barrel type of eccentric shaft vibration exciter and eccentric block to adjust the swing. The screen is of the flowing characteristics, the screening line is long and specification of materials screened is various, and it is also of reliable structure, strong exciting force, high screening efficiency, low vibrating noise, long durability, convenient maintenance, safe operation, etc, and the vibratory screen is widely used for screening in wide range including mines, building material, transportation, energy sources, chemical industry, etc.
Working principle of vibratory Screen:
The vibrating screen consists of screen box, supporting device, vibration exciter, transmission part, etc. The barrel-type vibration exciter is installed in the middle part of the machine. During normal operation, the vibartion of exciter will drive the screen mesh fixed on the screen box vibrate, and then materials will be screened. The big and small materials fall from the upper side and lower side of the screen to get them separated |
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Vibrating Feeder:
The Vibrating Feeder (Vibratory feeder) is used to transfer the large size materials and granular materials from hopper to receiving device uniformly, periodically and continuously in the production flow and to feed materials into the crusher continuously and uniformly also to screen the materials in the sandstone production line. The vibrating feeder is widely used to match the crushing and sieving equipments in many industries including metallurgy, coal mine, mineral dressing, building material, chemical, grinding, etc.
Working principle of Vibrating Feeder:
There are two eccentric shafts rotating at high speed at the same time from opposite directions, thus the strong centrifugal force is formed. The component forces of centrifugal force along the vibrating direction will always overlap each other, then counteract with that of vertical force from vibrating direction, then exciting force along single direction is formed to drive the feeder vibrate along straight line. When materials are fed into the feeder, they may be thrown up and move like para curve, then fall down. The materials will move forward on the slope surface of the feeder.
Characteristics of Vibratory Feeder:
Smooth vibration, reliable operation, long service life, low noise, low power consumption, easy to adjust, simple structure, easy to install, light weight, small volume, simple maintenance.
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Belt Conveyer:
The belt conveyor produced by our company has the strongpoints of large conveying amount, simple structure, easy maintainance, high standardization degree,etc, which is widely used in mining, metallurgy, coal and other industries. The belt conveyor can be used to transfer bulk materials or materials in pieces.According to different transferring requirements, the transferring system can be of only one belt conveyor or consists of several conveyors, or combined with other transferring equipments. The belt conveyor can be installed horizontally or aslope to meet the needs of different transferring requirements.
Working principle:
The motor drives the driving rollers of the belt conveyor, and drives the roller by the strong belt advances. Materials are conveyed from the original place to the place where they are needed.
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Vertical combination crusher
Vertical combination crusher: Our combination crushers are ideally suitable for primary and secondary crushing, with low power consumption and easy maintenance. Every feature of these machines has been carefully designed to provide superior quality and performance. They are widely used for crushing various materials like stone, granite, trap rock, coke, coal, manganese ore, iron ore, emery, fused aluminum, oxide, fused calcium carbide, lime stone, quartzite, alloys, etc. These crushers are recommended by leading consultants in this field and are used by hundreds of customers all over the world. |
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Hammer Crusher:
The hammer crusher(hammer mill) crushes by the collisions between high-speed hammer and materiasl,and the hammer crusher(hammer mill) features are in its simple structure, high reduction ration, high efficiency, etc. The PC hammer crusher(hammer mill) were developed for both dry and wet crushing of brittle, medium-hard materials for the mining, cement, coal, metallurgic, construction material, road building, and petroleum & chemical industries.
Operating principle of Hammer Crusher:
The motor drives the rotor rotate of the hammer crusher at a high speed through the belt, and on the rotor there are series hammers. When the materials get into the working area of hammers, they are crushed by the rotating hammers of the hammer crusher with high rotation speed, the products which are crushed to meet the required size can be discharged by the outlet and become the final products, the large size products are brought back to the crushed area by the hammers of the hammer crusher for being recrushed until they reached the required size.
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