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Overflow ball mills  are the common mills in dressing plants. Here are the advantages and disadvantages of overflow ball mills. Advantages: Simple structure. Overflow ball mills consist of feeding ends, shells, the discharge ends, main bearings and drive system. Hitherto, there is no complex grid plate at the discharge end, only helical blades with opposite rotary direction to mills, which makes overflow ball mills simpler structure than grid ball mills. Cheaper price. When it comes to the price of ball mills with the same specification, an overflow type is cheaper than a grid type. Finer grinding fineness. The discharging principle of overflow ball mills is as follow. The ground ore fines overflow out of the mill because of their own gravity; while other ground ore particles and steel balls go back to the mill after their sedimentation to the helical blade with the opposite rotary direction with the mill in the feeding end because of gravity. Therefore, the grinding t...

The theoretical basis of   flotation cell   is approximately same, namely the separation process is realized by flotation froth in the pulp according to the physical and chemical properties of mineral particles. In the flotation process, there is one thing that plays a very important role in the whole process——flotation froth. So what’s the role of flotation froth in the flotation process? Motor triangular belt drives the impeller to rotate, and the centrifugal effect forms the negative pressure, then the flotation froth is formed under the impeller centrifugal force. The main purpose of flotation froth is to gather hydrophilic minerals, improve mineral processing precision and decrease the difficulty of mineral processing. For example, copper, lead processing are much easier to achieve high-quality and high efficient separation. Froth plays a very important role in the   flotation process . Because of these froth, ore grain or mineral powder can adhere to the st...

Ball mill   and   rod mill   are quite similar whether in external shape or working principle. So what are the differences between ball mill and rod mill? Xinhai mineral processing equipment specialist explains it as follows: Both ball mill and rod mill have cylinder. Two ends are covered up. There is a neck of hollow shaft on the cover, and the cylinder is rotated in the bearing of shaft neck. Firstly, the two have in common is that both are cylinder grinding equipment. When the cylinder is rotating, the cylinder rotates with the materials fed from the cylinder inlet and crushed by the falling impacts and autogenous grinding of the steel balls and ores in the cylinder. Due to the continuously feeding materials, the pressure pushes materials to the outlet and the grinded materials are discharged from the cylinder outlet. Qualified materials flow from the cylinder outlet. In wet grinding, the materials are taken out by the water flow. Ball mill and rod ...

Jaw crusher   plays an important role in crushing stage, most large chunks of raw ores are crushed by jaw crusher. But jaw crusher consumes very fast, so how to repair abrasive jaw plate? Crushing cavity of jaw crusher consists of movable jaw plate and static jaw plate two pieces of jaw plates, which simulates the jaw movement animal then finishes the crushing operation. Therefore, the jaw plate of jaw crusher wears so fast, especially the outer third part. Therefore，Xinhai proposes the following methods: 1. Optimize the design of jaw plate.   In the operation of jaw crusher, the jaw plate will contact with the material directly that stands huge crushing and material friction force. Therefore, Xinhai specialty adopts new cambered jaw plate design, which not only plays buffer effect on jaw plate force, but also increases the effective length of jaw plate, improves the processing capacity 2. Tighten jaw plate when loading.   The new jaw plate should be fixed tightl...

Introduction: Xinhai desorption electrolytic system   often applies to loaded carbon process of CIP, which can make the gold separate from the loaded carbon and subside to high-grade gold mud. It is featured with high efficiency, low consumption, and fast operation, and it is the essential supporting system for the production of finished gold. Characteristics Xinhai desorption electrolytic system is a gold processing system that has high efficiency, low consumption, and fast operation. This system has the high degree of automation, complete and safe facilities, excellent technical indicators and reliable operation. 1. High efficiency After desorption electrolysis, most lean carbon grade is at the lower level. When the grade of loaded carbon is 3000g/t, the rate of desorption electrolysis is up to 96%. Compared with usual desorption electrolysis device, Xinhai desorption electrolysis system can reduce 3-4 times of lean carbon grade, which is conducive to stabi...

Hematite is one of the types of iron ore that belongs to iron oxide minerals. With the increasing shortage of free-milling magnetite in recent years. Hematite has gradually become the mainstream of iron ore in the market, which stimulates the development of relevant hematite ore dressing technology and equipment. Because hematite is a kind of weak magnetic minerals, it is hard to get hematite concentrate by single magnetic separation process (including roasting magnetic separation and magnetic separation). Therefore, Xinhai often combine magnetic separation process with other hematite ore dressing processes rather than adopting single magnetic separation process, such as roasting process + magnetic separation process, magnetic separation process + flotation process, weak magnetic separation process + strong magnetic separation process + gravity separation, etc. Brief Introduction: One. Crushing and Screening Take China as example, the hematite has low grade and complicated c...

China has rich lead-zinc resources, its lead-zinc reserves account for fourth place in the world (more than 35 million tons of lead and 94 million tons of zinc). There are more than 700 lead-zinc deposits in China, most of them are mainly located in Yunnan, Inner Mongolia, Hunan, Guangdong, Gansu, Guangxi and other places, and Yunnan has the largest lead-zinc reserves (26 million tons) in China. Lead and zinc ore dressing technology is different due to the ore type. With the improvement of lead and zinc ore dressing technology, the lead and zinc ore commonly adopts gravity separation – floatation process, magnetic separation – floatation process, gravity separation – magnetic separation – floatation process and so on. Lead-zinc ore dressing depends on flotation process. Flotation process can be divided into differential flotation and bulk flotation process, and one clear difference between them is to float lead first and then zinc or float lead and zinc together then separate them. ...