博文

目前显示的是 十一月, 2019的博文

Common Problems and Solutions About Flotation Cell in the Installation and Commissioning Process

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Froth flotation process is a very effective mineral processing method. There are many types of flotation cells, among which the most widely used is the mechanical agitation flotation cell. The structure of mechanical agitation flotation cell is complex, which often has the effect on the later work efficiency because the installation and debugging fails to meet the standard, so it is very strict to the installation and commissioning of flotation cell. Then, what problems of  flotation cell  will occur during the installation and commissioning process, and how can we solve them? 1. Agitation mechanism failure As the core part of flotation cell, agitation mechanism is directly related to the function of flotation cell. After some parts of the flotation machine are replaced, sometimes the agitation mechanism is not flexible, even cannot run, or there are some problems of motor bearing (too high temperature, abnormal vibration, noise). These problems are usually interrelate...

Application of Froth Flotation Process in The Rock Type Gold Mining Process

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Froth flotation process is the most widely used method in the rock type  gold mining process . The froth flotation process is suitable for treating the gold ore with fine grain, gold-bearing quartz vein ore with good floatability, polymetallic gold-bearing sulfide ore and graphite-bearing gold ore.  In this paper, we will explore the application of froth flotation process in rock type gold mining from three aspects: the froth flotation process, flotation machine and flotation reagent system. 1. Froth flotation process used in the rock type gold mining process The reasonable mineral processing flow is decided according to the suitable process type based on the ore and the ore property, and the original mineral processing flow should be reformed according to the ore property to make the technological process more suitable to the ore property and achieve better economic benefits. It shows that the stage grinding and stage separation can be used to improve the separation effe...

Seven Factors Influence the Effect of the Froth Flotation Process

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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...

Common Types of Spiral Classifier Used in the Mineral Processing

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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 ...

What is the Alluvial Gold Mining Method?

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Alluvial gold is a kind of gold ore produced in the bottom or low-lying areas of rivers, mixed with stone sand that can be washed out. Artificial gold panning is a common gold mining method for alluvial gold, but with the development of mineral processing technology, the alluvial gold mining method has become diversified, the type of alluvial gold mining equipment has also increased. The shape of raw ore, the amount of mud and the shape of gravel are the three factors that affect the selection of alluvial gold mining method and equipment. The most commonly used alluvial gold mining methods are gravity separation method, froth flotation method, amalgamation method. Among them, gravity separation method is the main method used in the alluvial gold mining, which is also proved to be an effective and economical alluvial gold mining method. Alluvial gold mining m...

Five Performance Parameters Affect the Screening Efficiency of Vibrating Screen

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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...

Seven Factors Influence the Effect of the Froth Flotation Process

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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 ...

Five Gravity Separation Processes Are Here!

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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...