How to configure the import and export of mill

1. 1. For small and medium-sized concentrators with fewer grinders, the vertical configuration scheme (the center line of the mill is perpendicular to the center line of the powder bin) is generally adopted. The main advantages are easy to operate, easy to pulp from the mainstream and pulp distribution
2. The length of grinding span should be adapted to the separation span. If the separation span is too long, parallel configuration can be considered
3. The grinding machine of multi-stage grinding can be configured in the same bay or in two bays. The advantages of two span configuration are simple process and few circuits, but when there are not many grinders, it is more economical to configure in one span
4. The angle of belt conveyor used for grinding machine feeding should not be too large, generally less than 18 °， The receiving point of the feeder should be stable, and the captain depends on the installation requirements of the electronic scale. In order to ensure the accuracy, it is better to use the tail of the heavy hammer to tighten the belt to maintain a certain tension
5. Crane capacity shall be selected according to regulations. When multiple cranes are used e to the large number of mills, the double deck layout method should be avoided to rece the height of the plant
6. The special maintenance equipment should be selected according to the requirements of the manufacturer. The grinding machine with a diameter of more than 5m should generally be equipped with a special manipulator, and there should be enough space and area in the configuration
7. When grinding across the surface, enough slope should be maintained, generally 5-10%, and good sewage and sand discharge systems should be set up to meet the requirements of environmental protection and rece metal loss
8. Due to the large noise in the workshop, the relevant offices, living rooms and automatic control rooms should be arranged far away from the sound source, or appropriate sound insulation measures should be taken
9. The steel ball warehouse should be located near the maintenance site, and the transportation convenience should be considered in combination with the terrain. In order to improve the condition of ball cleaning, a waste ball bin should be set up on the maintenance site to facilitate the transportation of waste balls by truck
10. The area of the maintenance site shall be selected according to the provisions of this manual. The gate of the site shall be consistent with the external transportation conditions. The specifications of the gate shall meet the installation and transportation requirements of grinding machine parts and components. When the overall size of the equipment is large, the installation hole should be reserved
this information is provided by Henan Gongyi Xinxing Machinery Factory.

2. Grinding cost is a high part of concentrator. How to effectively and reasonably control grinding fineness is an important factor to directly rece the cost of beneficiation and improve the economic benefit of concentrator. Because the grinding fineness is one of the many factors that affect the mineral processing index, the size of grinding fineness directly affects the concentrate grade and proct recovery. Therefore, the technical operation of ball grinder is very important
first of all, it is necessary to fully understand the influencing factors of grinding fineness. To sum up, the factors affecting the grinding fineness are: raw ore hardness, crushing particle size, mesh size, feeding capacity, ball mill model, number of steel balls, size ratio of steel balls, wear of lining plate of ball mill, speed of ball mill, speed of classifier, lifting height of main shaft of classifier, wear of classifier blade, overflow weir of classifier, lower opening of classifier The size of the lower opening of the classifier, the height of the upper opening of the classifier, the size of the upper opening of the classifier, the size of the water flow at the sand return, the size of the water supply to the ball mill, and the size of the flushing water at the discharge port of the ball mill, etc
after understanding all these influencing factors, we need to find out the best adjusting factors one by one in the proction operation
hardness of raw ore: different ores have different hardness, which is fixed relative to the same ore and cannot be adjusted. But in proction, under the premise of the technical requirements of mineral processing technology, reasonable ore blending can be carried out to make the ore size as uniform as possible, and the proportion of massive and powdery ore is reasonable and stable. In addition, in the ball mill belt feeding place, the belt may leak ore e to long-term wear, and most of the leakage is fine ore. this part of the leakage ore must be added to the ball mill as soon as possible. If it is piled up for a long time and added intensively, it will cause uneven ball mill feeding and unstable proction. In particular, it is difficult to beneficiate, and the properties of fine minerals and lump minerals are often different
the lifting height of the classifier spindle is also an important factor affecting the amount of return sand and grinding fineness. Generally, the main shaft of the classifier should be put in place in normal proction. After the equipment maintenance, the ball grinder in some concentrators failed to clean up the ore in the classifier, and the ore slime settled more solid after a long time of settling. When lowering the main shaft of the classifier, e to carelessness, the main shaft was not completely lowered, resulting in less sand return than normal. In addition, if the spindle is not put down, it may be that the spindle has not been cleaned and oiled for a long time, so attention should be paid ring operation
the adjustment of crushing particle size and sieve hole is the key. The ball mill worker must supervise the crushing system. If the particle size of the ball mill changes in proction, it must be reflected to the crushing workshop immediately. Finally, the finer the crushing particle size, the better. Classifier blade wear: after the blade wear, relative to the amount of return sand is reced, resulting in the coarsening of grinding fineness. In addition, if the blade wear is severe, it will affect the classifier life, so check the blade wear in time and replace the worn blade in time. Ball mill speed, classifier speed, classifier impeller spacing: it has been set at the time of purchase of ball mill. Pay attention to check and consult at the time of purchase. The height of overflow weir of classifier affects the size of sedimentation area of ore. in proction, we can adjust the height of overflow weir of classifier appropriately according to the requirements of grinding fineness. If grinding fineness is required to be reced, the overflow weir of classifier can be adjusted, Angle iron with a certain height can be welded on both sides of the classifier, and the height of overflow weir of the classifier can be adjusted by inserting a wooden wrench. Sometimes, the height of overflow weir can be naturally increased by long-term accumulation of slime
the size of the lower opening of the classifier, the size of the lower opening of the classifier, the size of the upper opening of the classifier and the size of the upper opening of the classifier are made on site ring the installation of the equipment. In many concentrators, the size of the opening of the classifier is not adjusted properly ring the installation of the equipment, and the workers do not pay much attention to it ring the operation, which virtually affects the grinding operation. The lower opening of the classifier is low, and the ore sedimentation area is relatively large, so the amount of return sand will be large, and the grinding fineness will be relatively fine. The lower opening of the classifier is large, and the ore sedimentation area is relatively large, and the water flow is relatively gentle, so the amount of return sand will be large, the grinding fineness will be relatively small, and the upper opening of the classifier will be large, The relative return sand amount is relatively large and the grinding fineness is relatively fine. Otherwise, the opposite is true
first of all, we should assume that all other factors are normal, and the principle is: when the grinding fineness is fixed, we should maximize the processing capacity, which can effectively improve the proction efficiency Relatively speaking, the finer the grinding fineness is, the more sufficient the dissociation between useful minerals and gangue minerals is, which is beneficial to improve the metal recovery. Therefore, under the condition of a certain amount of ore, the grinding fineness should be improved as much as possible. In addition, grinding is the first link of mineral processing technology, in order to ensure the stability of proction, grinding should be as stable as possible
under the condition of a certain amount of ore feeding, the size of flushing water and ore feeding directly affect the fineness of grinding. In many domestic mines, grinding automation is not realized, and the size of water is directly adjusted by ball grinder manually, because the water flow in these two places is large, it is difficult to see the increase and decrease, Therefore, careful observation and fine adjustment are required. First of all, we understand that as the feed water of the ball mill increases, the grinding concentration becomes thinner and the grinding fineness becomes coarser. On the contrary, as the feed water of the ball mill decreases, the grinding concentration becomes larger and the grinding fineness becomes finer. The flushing water at the discharge port of ball mill becomes larger, the overflow flow becomes thinner, and the overflow fineness becomes smaller. On the contrary, the flushing water at the outlet of the ball mill becomes smaller, the overflow becomes thicker, and the overflow fineness becomes thicker. Therefore, in other conditions, including the same amount of ore, to improve the grinding fineness, the feed water of the ball mill can be reced, and the flushing water at the discharge port of the ball mill can be increased. It is better to adjust these two conditions at the same time, so as to rece the fluctuation of flotation caused by the change of the pulp amount caused by the adjustment of grinding fineness. In many concentrators, e to the operation of ball grinder, the amount of ore paddle changes greatly, resulting in the instability of flotation liquid level. If the flotation worker does not deal with it in time, it will cause the change of metal recovery and grade. If the grinding fineness is coarsened, it will be the opposite
on the premise of ensuring the grinding fineness, the feeding capacity of the ball mill can be increased. The size of ore feeding is to meet the requirements of grinding fineness while the ball mill does not expand. The whole process must be carried out in all aspects of the subtle operation
the above is the way that Shanghai Tongli provides for you to improve the grinding fineness of ball mill. The situation of each ball mill is different. We suggest that you would better ask Shanghai Tongli www.tonglizhongji.com In order to make better arrangements!

3. The control method of grinding concentration of ball mill is as follows: e to the coarse particle size and high concentration of pulp in the ball mill, and the continuous operation of the mill, it is difficult to directly detect the grinding concentration with instruments. Therefore, the feed-forward control system of grinding concentration should be adopted. According to the grinding amount and water content, the circulating load and water content of classifier and the required grinding concentration, the control signal should be sent out according to the established mathematical model, Through the flow adjustment device, control the feed water of the mill to maintain the required pulp concentration in the mill.

5. Adjustment of discharge port of ball mill:
in the grinding process of ball mill, the lining plate is constantly worn, and the discharge port is graally increased. In order to ensure a certain proct size, it is necessary to constantly adjust the size of the ore outlet. If the thread of the adjusting ring is blocked by mineral powder or it is difficult to rotate because of the lack of oil between the threads, under the condition of loosening the locking ring, give a little ore to make the ball mill run for a short time, so that the adjusting ring can be easily rotated. After the adjustment, the steel wire shot put method can be used to measure the size of the ore outlet from the cylinder to the ore outlet. It is enough to measure one point for the processed new liner, and 6-8 points for the unprocessed or worn liner. The discharge port should not be less than the specified range. After the discharge port reaches the required size, use the locking cylinder to lock the adjusting ring, otherwise it is not allowed to start
this information comes from www.gyxxjx.com

6. You mean single in single out ball mill? The feeding and discharging of the ball mill with single inlet and single outlet are realized by blowing several times. If the raw material is coarse, the feed inlet should also be equipped with a hinge cage, which is equivalent to a kind of blade. The hinge cage can bring the raw material into the ball mill tank through rotation. At the discharge port, the ground material will be carried out by the wind. There are two ways of wind into the ball mill. One is positive pressure test, that is, the wind blows in from the feed port, the tank forms positive pressure, and the air material mixture goes out from the discharge port. The other is the negative pressure type, with a powder exhauster to draw air from the discharge place to suck out the ground fine material
the economy of the ball mill is closely related to the air flow into the ball mill, so pay attention to the adjustment!!! ha-ha

7. It's easy to distinguish the feeding port and the discharging port. The outlet is where the recer is located. Please refer to the website of Shanchuan Heavy Instry Co., Ltd

8.

The ball mill of Shaolin machine has a feed inlet and a discharge outlet

9. The small ball mill has the maximum feed size, and the materials finely crushed by the crusher must be screened by the vibrating screen. The materials whose particle size meets the feed requirements of the ball mill are transported to the buffer bin for grinding by the ball mill, and the unqualified materials are returned to be broken again.
the qualified materials in the buffer bin are transported to the feed inlet of the ball mill by the feeder, and the drum is rotated with the beating of animal materials and steel balls, Extrusion, friction, etc., grinding to a reasonable strength, the material is discharged from the discharge port,
after grinding by ball mill, the material also needs to be graded by classifier, and the unqualified material is returned to the feed port of ball mill for regrinding.

10. Generally, the output of ball mill is distinguished according to the amount of raw materials processed by ball mill in each working day
for example, a 2100x3600 ball mill can process 400 tons of copper ore in one working day.