How to use large flotation machine to separate copper and molybdenum ore

 About 90% of non-ferrous metal recovery in the world will use flotation method, in order to realize mineral flotation flotation machine plays a great role. Large-scale flotation machine can significantly improve the processing capacity of beneficiation, reduce consumption, and obtain higher benefits.

The flotation machine is a motor that drives the rotating shaft to rotate the impeller. Under negative pressure, the pulp moves between the impeller and the stator, and the centrifugal blower is evenly dispersed in the air through a porous cylindrical air distributor for mineralization. After the stator is stabilized, it rises to form a stable foam layer, and enters the next operation through the upper foam tank. The remaining slurry will flow through the flow holes in the tank wall to the next tank for sorting, and finally become tailings.

The main characteristics of tooth decay of the super large flotation machine are:

(1) The pulp aeration and bubble mineralization effect is good.

The air coming in from the blower will directly enter the air inlet on the top of the flotation machine through the air duct. A regulating valve that controls the air volume is installed at the air inlet. The air can directly enter the hollow shaft to ensure that the slurry in the flotation machine is not fully affected by the equipment. Mineralization. And a good amount of aeration can effectively suspend the mineral particles in the entire flotation tank and evenly distribute the bubbles.

(2) Energy saving and loss of equipment.

Before the flotation machine, air was directly fed between the impeller and the stator by the blower. After the hollow shaft rotates, the equipment can make the air into the suspension state formed after stirring at low speed and enter the selection for selection. The stator adopts The form of low damping changes the direction of the slurry flow to the radial direction, which can reduce the resistance circulation and power consumption of the slurry.

(3) High efficiency of automatic liquid level control. The slurry level in the flotation machine can be detected by a slurry level gauge, which can realize automatic control of the slurry level. The tailings box and the middle box have a cone valve to control the flow of the slurry, which is controlled by a pneumatic actuator, so that it can be used for full adjustment of the slurry.

(4) Conducive to improving the selection effect. The deep cone structure can mineralize the pulp to provide a stable foam zone and a longer separation zone, so that low-pressure air can be fully dispersed in the solid, liquid, and gas three-phase strong turbulent mixing zone at the bottom of the flotation machine, which can generate bubbles If it is fully utilized, there is a large speed difference between the bubbles and the pulp. There are more opportunities for fine particles to contact the bubbles, and the fine particles will fully float out. The slurry will sink, increase the chance of collision of bubbles and increase the chance of flotation.

(5) Convenient operation and management of equipment.

Can drive the load to start; advanced slurry level control olefin; reduce short circuit circulation; spare parts wear light, low maintenance and repair costs; simple structure, easy maintenance; low energy consumption; good air dispersion; low chemical consumption, saving investment and so on.

How to throttle resources for ball mill

 Nowadays, with the continuous development of social productivity, green energy saving has become the theme of today's society, and various equipment has been continuously improved to save energy and reduce expenditure, especially in the heavy industry industry. It's easy to say, but for mining, power consumption is a big problem. Therefore, in response to similar problems, we propose two improvements, one is the equipment itself, and the other is to improve the operation of the process.

On the one hand, resource throttling of the ball mill is very important. First of all, when designing the ball mill, full consideration must be given to the accessories and devices to save power and reduce consumption. In the design of the ball mill, considering the purpose of energy saving and consumption reduction, a new type of transmission system is specially designed, and a planetary gear reducer is used for transmission, which changes the traditional transmission layout and greatly improves the working efficiency of the motor. This is one of them. Design advantages. In addition, when designing the ball mill, the bearing, drive mode, and liner of the ball mill also added innovations and played a great role.

Another aspect is the process operation. The process is continuously optimized. The three main aspects are the selection of the process flow, the topping method of the steel ball, and the stable and safe operation. Continuously optimize.

The above is what we need to improve. Starting from these aspects to improve equipment to save resources is also a direction we need to continue to develop.

What to do if the flotation effect is not good?

 In the flotation process, there are many processes that affect the flotation effect. There are not only non-adjustable factors of ore properties, but also adjustable factors such as pulp concentration, pulp temperature, pH, flotation time, grinding fineness, and reagents. Let's introduce them one by one below.

Ore properties refer to the chemical composition, mineral composition, structure, structure and element occurrence state of the ore. The oxidation degree of the ore has a great influence on the flotation effect, because oxidation will change the original mineral structure and make the mineral composition It is more complicated, thus changing the physical and chemical properties, and at the same time, oxidation will change the pH of the pulp, which will affect the use of chemicals.

There is a great relationship between pulp concentration and recovery rate. Generally speaking, there is a normal distribution between the slurry concentration and the recovery rate. Only when the optimal concentration is reached, the recovery rate also reaches its peak. In the flotation process, the slurry must maintain a certain concentration of reagent to obtain good results. When the slurry is thicker, the reagent concentration should be increased accordingly. When the slurry concentration increases, the flotation time and processing capacity of the flotation machine should also increase accordingly.

The temperature of the slurry is also an important factor affecting the flotation effect. Heating can accelerate the movement of molecules, accelerate the dispersion and hydrolysis of the reagent, and increase the interaction speed between the reagent and the mineral surface.

The pH of the pulp often affects the floatability of the mineral, but the critical pH will change with the change of flotation conditions. Under certain conditions, any mineral has a suitable pH value, and only under this value can a better flotation index be obtained.

Flotation time refers to the residence time of the slurry in the flotation tank. To determine the best flotation time, it should be determined in advance through the beneficiation test. When the floatability is good, the content of the minerals to be floated is low, the slurry concentration is small, the agent has a strong effect, and the flotation time is short. On the contrary, longer floating time is required.

The appropriate grinding fineness should be determined according to the particle size of the useful minerals, to dissociate the useful minerals from the gangue, and minimize the symbiosis between the minerals and the gangue. For single minerals, the fineness of grinding must be less than the upper limit of the floating particle size of the mineral.

However, it should be noted that the finely ground particle size of the ore will also have an adverse effect on the flotation effect, so the selection of the appropriate grinding particle size is of decisive significance for the final effect.

In the flotation process, the agent addition system is called the formula, which mainly refers to the type, quantity, order, addition point and preparation method of the agent. The type of medicament is mainly determined by the results of ore selectivity research, and the dosage of medicament is determined by the beneficiation test and practical experience. In the actual operation process, timely adjustments should be made according to changes in the situation. It is determined according to the dissolution rate and action time of the drug.

Every detail in the flotation process will affect the final flotation effect. It is recommended to conduct a beneficiation test before flotation, and determine the process parameters according to the beneficiation test results to achieve the best results.