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In the beneficiation process, the classification operation often plays an extremely important role in the grinding cycle. It is necessary to fully dissociate and separate the fine-disseminated useful minerals and gangue, and grind the ore to a certain degree of fineness, but it is also essential to avoid over-grinding to prevent muddy from adversely affecting the separating process. This requires classifying equipment to separate the qualified parts of the grinding products in time to avoid unnecessary grinding, deliver the product to the sorting operation earlier and return the part with unqualified particle size to the mill for re-grinding. It can be seen that the classification operation is of great significance to the grinding cycle in both technical and economic sense. Generally, the classifying equipment performs the classifying operation by the force and principle such as gravity, centrifugal force, and mechanical vibration. At present, the classification equipment used i...

As the main equipment used in the screening operation,  screening equipment  is used for screening, dewatering and thickening in the whole mineral processing. The screening equipment can not only screen the qualified material before crushing, avoiding the over-crushing phenomenon and reducing the energy consumption of the crusher, but also check if the material is at suitable granule or not, and screen the material into several classifications for separation, increasing the processing efficiency. At present, there are three types of vibrating screen widely used in the mineral processing, include circular vibrating screen, auto centering vibrating screen and linear vibrating screen. 1.   Circular Vibrating Screen Circular vibrating screen  is suitable for the material classifying of the mineral, construction material, electricity,chemical industry and other departments. It can be used to dewatering, de-sliming, and de-medium. The circular vibrating screen uses ...

Froth flotation process mainly uses the froth buoyancy from the pulp to separate minerals according to the nature of the mineral surface. Generally, adding the flotation agents to a certain concentration of pulp, and a large number of dispersion bubbles are generated by agitation and aeration in the flotation machine. At this time, suspended mineral particles collide with bubbles, and a part of mineral particles with good floatability attach to the bubbles, and float up to the mineral liquid level then form the foam products, while the non-floating minerals remain in the pulp and become tailings. In the froth flotation process, there are many factors influence the effect of froth flotation  technology, including grinding fineness, pulp density, pulp acidity, reagent system, aeration  and agitation, flotation time, factors such as water quality and slurry temperature,  which require that the plant in production practice strictly control the performance of various facto...

In mineral processing, the ores need to be grinded into a certain size that the fine-grained useful minerals and gangue minerals achieve full dissociation. And the over-grinding should be avoided at the same time in case that the sliming has the negative effect on the separation, which need the classifier to return the unqualified particles to the grinding mill for re-grinding, and separate the qualified particles in time.Therefore, classification takes an important part in grinding operation in the view of technology and economy aspect. Now, the common classifiers in mineral processing plant are mainly mechanical classifier and  hydrocyclone . Among them,mechanical classifier can be divided into spiral classifier, rake classifier,tank classifier and other types. With the development of classification operation, rake classifier is already replaced by spiral classifier, tank classifier is gradually replaced by hydrocyclone. Although the rapid development of hydrocyclone make the ...

In the actual mineral processing plant, the mine owners found that the vibrating screen cannot reach the expected processing capacity and the screening efficiency of the vibrating screen is low. In fact, the screening efficiency of the  vibrating screen  will directly affect the quality and investment cost. When it comes to the screening efficiency of vibrating screen, many factors will make a difference, such as material properties, equipment structure and various performance parameters. Irrespective of the hard factors of material properties and equipment structure, we mainly  analyze the influence of various parameter indexes on the efficiency of the vibrating screen,  including amplitude, vibration frequency,vibration direction angle, screen tilt angle and the throwing angle, these are the reference for the vibrating screen operation. 1. Amplitude of the Vibrating Screen Generally, the larger the vibrating screen model, the greater the vibrating screen am...

Gravity separation process is a common mineral processing method. According to the differences of mineral density and particle size, the minerals are loose and layered by relying on the fluid power and mechanical force, thus obtaining the products with the different density or particle size. Expect for various gravity separation equipment, the medium(air, water/heavy liquid or suspension) is also the necessary factor for the gravity separation process. Under the effect of gravity (the centrifugal force is the main force in the centrifugal field), mechanical force and medium, the particle sizes with different density will produce different movement speed and movement, so as to realize the separation. According to the principle of gravity separation process, the movement form of medium and the purpose of operation,  the common gravity separation processes mainly include jigging  dressing, shaking table dressing, chute dressing,dense media dressing and hydraulic/wind power cl...

Hydrocyclone is an effective separation equipment that carries on two-phase fluid separation by using the centrifugal force field, which is a non-motion separation device composed of the upper cylinder and the lower cone. In the mineral processing, hydrocyclone is mainlyused in the classification of grinding circuit, especially the classification in the fine grinding. Besides, hydrocyclone can also be applied in the desilting and thickening operation. Different applications mean the various requirements for the technical parameters of the hydrocyclone, including structure parameters, operating parameters, feeding properties. All of them are correlated and constrained mutually, each of them is not easy to be adjusted and controlled, so we must understand each technical parameter before choosing the hydrocyclone. 1. Diameter and height of the cylinder The diameter of the cylinder is the main reference point to determine the size of hydrocyclone, which has a certain ratio with ot...