Rotary Screen/ Rotary Separator/ Rotary Sieve

The rotary screen is used for the screening of fine materials and the powdery materials, having high screening capacity. It is widely used in metallurgy, chemical industry, abrasives, glass, ceramics, construction, light industry, food and other industries.

Superiority
The rotary separator is featured with the superiority of high efficiency, high utilization rate of screen, less clogging, simple structure, small size, light weight, fully enclosed structure, no dust pollution and easy installation. In addition, the small horizontal distance between the feeding inlet and discharging port makes it convenient to arrange the layout of the screening machinery. It can be applied to the screening of various kinds of materials.
1, wide adaptability of materials: rotary screen can be widely used for the screening of various materials such as the coal slime, soot and other materials.
2, simple feeding: the feeding inlet can be designed in accordance with the actual situation and the smooth feeding can be guaranteed without special measures.
3, large screening capacity: the circle area of the rotary sieve is larger than that of other types under the same size so that the effective screening area is larger, which helps the materials to contact with the sieve fully, thus improving the screening capacity.
Structural performance
The rotary sieve is composed of the base, housing, motor and other parts. It adopts the cylindrical mesh structure and the materials in the barrel are constantly stirred, forming the constant updates and advancement of materials. The machine can achieve satisfactory results for the screening of the materials with large viscosity and large mesh.

Impact Pulverizer/ Rock Impact Crusher

Impact Pulverizer/ rock impact crusher
Impact pulverizer is a new kind of high-efficiency crushing equipment with selective crushing effect,which has promising prospect. The rock impact crusher can resist compression and it is widely used in building materials, transportation, energy, cement, mining, chemical and other industries for crushing materials.

Advantages
1) simple structure, small size, light weight, large capacity, low production costs;
2) ore is crushed along the joint plane, which guarantees the less power consumption and high efficiency;
3) it has the selective crushing role and the granularity of the crushed product is more uniform;
4) large crushing ratio simplifies the crushing process and reduces the cost of the dressing plant;
5) the gap between the back plate and plate hammer can be easily adjusted to realize the effective control of the particle size and particle shape.
Working principle
The impact pulverizer is the crushing machine that makes use of the impact force to crush the materials. When the rock impact crusher is in operation, driven by the motor, the rotor will be in high-speed rotation. The materials will impact against the hammer on the rotor after they enter the operation area of the hammer and then the materials will be re-crushed by being thrown on the counterattack device. This process is repeated until the materials are broken to the desired particle size and then the materials will be discharged from the discharging port. In addition, the adjustment of the gap between the frame and the rotor can change the discharging granularity and the material shape.

Horizontal Kiln/ Horizontal Lime Kiln

The horizontal kiln that is also known as the horizontal lime kiln , which belongs to the class of building materials equipment. Its technical performance and operating condition largely determine the quality of the product, productivity and cost of enterprise. In the building materials industry, apart from the calcination of cement clinker, the rotary kiln can be also used to calcine clay, limestone and dry the slag and so on; in the production of refractory materials, the horizontal kiln is used for the calcination of raw materials to make its size stabile and increase its strength and then conduct the machine shaping process. In the beneficiation process, the users can use the rotary kiln to magnetic roasting the depleted iron ores so that the original weak magnetism of the ores can be changed into the strong magnetism to facilitate magnetic separation.

Technical features
1, the rolling and moving of the material is smooth and placid; the material layer is uniform and stable; the quality of clinker can be improved;
2, in the operation of the horizontal lime kiln, there is no need to change the existing process parameters, which will not consume any material, significantly improving the comprehensive economic efficiency;
3, the kiln lining, bearing bush, motor and the kiln body can be effectively protected, significantly extending the service life.
Classification
The classification of the rotary kiln: in accordance with the usage, the rotary kiln can be divided into cement rotary kiln , ceramic sand rotary kiln, kaolin rotary kiln, lime kiln; in accordance with the different effects of energy supply, it can be divided into gas rotary kiln, coal-fired rotary kiln, mixed fuel rotary kiln. In accordance with the different process, the rotary kiln can also be divided into wet and dry types rotary kiln, dry process rotary kiln, kiln dryer and so on.

mining machinery: The Performance Features and Overhaul of Jaw Break...

mining machinery: The Performance Features and Overhaul of Jaw Break...: From the introduction to obtain the stability of the market, as for the jaw crusher , there are a lot of technological innovation and i...

Rock Grinder

The rock grinder, which is one kind of the mining equipment , refers to the crusher that makes the content of the materials whose particle size is greater than three millimeters occupies more than 50% of the total discharging amount. The crushing operation of the mineral ore is usually divided into coarse crushing, medium crushing and fine crushing. Accordingly, there are many types of crushers.

Application and features
The rock grinder is widely used in mining, smelting, building material, highway, railway, water conservancy and chemical industry and many other sectors. It is featured with the advantages of large crushing ratio, uniform particle size, simple structure, reliable operation, easy maintenance, low costs (including operation cost, crusher price and so on) and other characteristics. For example, the impact pulverizer is suitable for the crushing of hard materials such as the crushing of limestone in cement plant , which has the advantages of large productivity and small discharging particle size.
The importance of crushing
There are a large number of raw materials and recycling waste needing to be processed with the rock grinder every year in metallurgy, mining, chemical, cement and other industrial sectors. For example, in the dressing plant, in order to achieve the monomer separation of the useful ores, there is the need to conduct the aggregate crushing of the raw mineral ores to the desired particle size. In the coking plant, sinter plant, ceramics factory, the glass industry, powder metallurgy and other departments, the crushing machine is necessary for the required particle size for the next procedure.

The Basic Principle of Magnetic Separation

Because of the different magnetism among the minerals, the magnetic force they bear is also different when they enter the magnetic field of the magnetic separation equipment (magnetic separator) , and thus the trajectories is different. And finally the minerals will be divided into magnetic product and the non-magnetic product (or ferromagnetic products and products with weak magnetism), achieving magnetic separation.
Mineral magnetic differences are the basis of magnetic separation. The magnetism of minerals can be measured and the minerals can be divided into three categories according to the degree of magnetic strength of the mineral : (1) strong magnetism minerals, such as magnetite, pyrrhotite, the number of such minerals is small; (2) weak magnetism minerals, such as hematite, limonite, ilmenite, psilomelane pyrolusite, garnet, the number of these minerals is larger; (3) non-magnetic minerals, most of the non-metallic minerals and non-ferrous minerals belong to this category. In the magnetic field of the magnetic separator, the ferromagnetic minerals suffer the maximum magnetic force, the weak magnetism minerals suffer smaller magnetic force and the non-magnetic minerals bear no magnetic force or weak magnetic force.
The magnetic field of the magnetic separator is a necessary condition of the magnetic separation. The magnetic field can be classified into the uniform magnetic field and nonuniform magnetic field. And the degree of nonuniformity of the magnetic field can be measured with the magnetic field gradient, which is the changing rate of the magnetic field strength along the space, i.e. the unit length variation amount of the magnetic field strength. The greater the magnetic field gradient is, the greater the degree of nonuniformity of the magnetic field will be, that is, rate of change of magnetic field strength along the space is large. The magnetic force that the magnetic ore particles bear is proportional to the product of the magnetic field strength and the magnetic field gradient. If the magnetic field gradient is equal to zero (in the uniform magnetic field, no matter how high the magnetic field strength is, the magnetic field gradients are equal to zero) and then the magnetic force that the magnetic mineral grains stand is zero and the magnetic separation can not be carried out.

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The Performance Features and Overhaul of Jaw Breaker

From the introduction to obtain the stability of the market, as for the jaw crusher, there are a lot of technological innovation and improvements. After the comprehensive combination of the performance of other crushing equipment, the following aspects are the performance characteristics of the jaw crushers:
1. Crushing chamber of the jaw breaker is deep and there is no dead zone, which increases the feeding capacity and output; large crushing ratio and uniform particle size;
2. It is easy to adjust the Gasket-discharge opening, reliable and convenient, large adjustment range, increasing the flexibility of the device;
3. Lubrication system is safe and reliable; it is easy to replace the parts; maintenance workload is small; simple structure, reliable operation, low operating costs.
4. Energy-saving: the energy-saving of the stand-alone can be reach 15% to 30%, the system can save more than doubled; the adjustment range of the discharging opening is large, which can meet the different requirements of users ; low noise, less dust.
The overhaul of the jaw crusher: after working for a period of time, any machinery needs maintenance, the damaged parts need replacing and the seriously worn ones need maintenance, which is the way to keep the long service life of the machine. Jaw crusher is to be overhauled according to the way of maintenance. In order to ensure the normal work of the jaw crusher, in addition to the proper operation, it is necessary to conduct the planned maintenance, including routine maintenance checks, minor repairs, medium repair and overhaul.
(1) Minor repairs: the main contents include the check and fix of the adjusting device, the gap of high-speed discharge opening and the replacement of the worn liner. Overhauling the transmission parts, lubrication systems and replacing the lubricants. The cycle of the minor repair is about 1-3 months.
(2) Medium repair: apart from all the work of minor repairs, the medium repair also includes the replacement of the thrust plate, lining, inspection and repair of bearing bush. Repair cycle is generally about 1-2 years.
(3) Overhaul: in addition to the work of medium repair, it includes the replacement of the eccentric shaft and moving jaw mandrel, the casting of the Babbitt metal on the rod head and the replacement or repair of all worn parts. Generally, overhaul cycle is about five years.

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Iron ore concentrator : http://www.crusher-export.com/ore-beneficiation.html