Discharge of centrifugal concentrator

1. The advantages and disadvantages of centrifugal concentrator are as follows:
advantages:
A. e to the use of centrifugal force, centrifugal concentrator strengthens the gravity separation process and shortens the separation time, so its processing capacity is large, about 10 times of that of automatic chute
B. small footprint and high degree of automation
C. the centrifugal concentrator is more effective in the treatment of fine slime, and the recovery rate of 37-19 μ m is as high as 90%. Because the separation of ore particles in the centrifugal concentrator is based on the combined action of centrifugal force and transverse flow film, the common enrichment ratio is higher than that of the plane gravity chute
2. Disadvantages:
A. water and electricity consumption is larger than that of plane chute
B. the drum wall slope cannot be adjusted
C. The proction process is intermittent operation, and continuous feeding is not allowed
centrifugal concentrator is also called centrifugal chute. At present, there are many kinds of centrifuges, but their structures are basically the same. When the centrifuge rotates at high speed, it proces great centrifugal force to strengthen the gravity separation process, so that the fine particles can be recovered more effectively. Its appearance successfully solves the full recovery of fine particles. Therefore, it is widely used to recover tungsten, tin, iron and other slimes.

2.

Centrifugal concentrator is the equipment that uses centrifugal force field for mineral processing, and its structure is shown in Figure 41. Its main sorting component is a horizontal truncated cone drum. The inner side of the cone surface is the sorting surface, and the slope is 3 °～ five °， The drum is driven by the motor through the belt and rotates around the main shaft at the speed of 350-500r / min. the upper and lower feeding nozzles extend into the drum. The slurry is ejected from the feeding nozzle and attached to the drum wall along the tangent direction. While it rotates with the drum, it flows along the inclined side of the drum wall at the low end. The two motions are combined into spiral motion. In the process of slurry flowing along the inner wall of the drum, the heavy minerals tend to the periphery of the slurry flow because of the centrifugal force, that is, they stick to the drum wall; Light minerals enter the surface of the ore flow. The heavy minerals attached to the drum wall move less, while the light minerals on the surface are discharged from the lower end of the drum with the pulp flow. When the heavy minerals are deposited to a certain thickness on the drum wall, the feeding is stopped, and the high-pressure water is sprayed from the flushing nozzle on the inner wall of the small diameter end of the drum to wash the deposited concentrate. It can be seen that the work of centrifugal concentrator is periodic

The feeding and discharging tailings, flushing and discharging concentrate of centrifugal concentrator are automatically controlled by automatic control mechanism

Fig. 41 structure diagram of centrifugal concentrator

1 - drum; 2 - protective cover; 3 - chassis; 4 - main shaft; 5 - bearing; 6 - pulley; 7 - motor; 8 - feed mouth; 9 - flushing nozzle

10 - feed distributor; 11 - feeding trough; 12 - return tank; 13 - ore discharge distributor; 14 - tailing tank; 15 - concentrate tank; 16 - high pressure water valve

K1, K2, K3 - control mechanism

3. Centrifugal concentrator is a new type of equipment developed in modern times to recover useful minerals from fine slime. The beneficiation of centrifugal concentrator is carried out in the centrifugal force field. Its characteristic is that the centrifugal force of fine particles in the centrifugal force field greatly exceeds the gravity, thus accelerating the settlement of particles (that is, increasing the radial settlement velocity) and expanding the difference of settlement velocity of particles with different densities, Thus, the gravity separation process is strengthened.

4. The advantages of centrifugal concentrator are large processing capacity, simple structure, reliable operation and low cost; Its disadvantages are intermittent ore discharge, complex auxiliary equipment, sensitive influence of feed rate and feed concentration on separation effect and poor adaptability< However, compared with other fine-grained gravity separation equipment, centrifugal concentrator has obvious advantages and is an effective equipment for fine-grained mud treatment. It is mainly used to treat Anshan type lean hematite. At present, some tungsten and tin ore concentrators also use centrifugal concentrator when separating slime
the optimum feed size of centrifugal concentrator is 0.074-0.01mm
the main factors that affect the separation index of centrifugal concentrator are: feed rate, drum speed, feed concentration, separation cycle (operation cycle), etc. These factors and ore properties are related to separation requirements, and the best values of these factors are different for different ores
this information is provided by www.gyxxjx.com Provide.

5. Jiangxi Hengcheng mineral processing equipment Co., Ltd. arranges for you and hopes to help you.
water jacket centrifuge, also known as Nielsen centrifuge, is an important gravity separation equipment. It is a kind of centrifugal mineral processing equipment developed and proced by using the principle of gravity acceleration. It is suitable for single gold recovery of sand gold, vein gold and polymetallic ore to replace mercury plate operation. It can also be used in the cleaning of gold bearing heavy sand washed by chute and gold dredger. It is an ideal choice for dry land or river gold panning and rock gold equipment
the working process of the water jacket centrifuge
the double-layer centrifuge barrel is divided into two layers, the inner layer is a cone shape like a washing machine dryer barrel, which is welded with stainless steel and has annular spacer bars. There are many small holes on the wall of the inner cone, and the outer layer is also a cone shape, forming a closed water jacket with the inner layer. The middle transmission shaft is a hollow shaft, and the pressure water is flushed into the inner sleeve of the double-layer centrifugal barrel through the hollow shaft, and is sprayed into the spacer bar through the inner hole to form the backwash water. Under the action of high-speed centrifugal force, the slurry slides upward along the inner cone, heavy substances such as heavy monomer gold precipitate between the spacer bars, and light substances slide upward until they reach the upper opening of the double-layer centrifugal bucket and discharge through the tailings tank. Under the impact of backwash water, the heavy substances between the spacer bars are separated by the inner cone, The heavier material is deposited at the bottom of the spacer, and the lighter material is continuously replaced by the new heavy material. After a period of time, the gold bearing heavy material is cleaned out between the spacer. That is to complete a beneficiation process
our company has proced five models. It is proved by mineral processing test that the recovery of gold is above 99% when the gold monomer in vein gold ore is dissociated. The period of rock gold expulsion is 1-4 hours, and that of sand gold is 4-8 hours, and the enrichment ratio can reach 500-1000 times< The equipment model < br / < br / < br / < br / < br /
stl20 < br /
stll20 < br /
stl60 < br /
stl80 < br /
stl80 < br / < br /
the proction capacity is < h
t / h
the proction capacity t / h < h
0.25-0.30-0.30
0.25-0.25-0.30-0.30 < br /
2-3-3
2-3-3 < br /
0-30-30-30 < br / < br / < br / < br / < br / < br / < br / < br / < br / < br / < br / < br / < < br / < br / < br /
equipment < br / < br / < br / < br / < br / < br / < br / < br /
1.5-2
4-6
10-15
1.5-2 17-25
40-60
concentrate output kg / time
2-3
10-20
30-40
60-70
70-80
motor power kw
0.75
2.2
5.5
11
18.5
cone speed
800
600
460
400
360
pressure water m
PA
0.04
0.1
0.16
0.18
0.2
overall dimension mm
790 × seven hundred and eighty-five × 790
1180 × one thousand one hundred and forty × 1250
1970 × one thousand six hundred and seventy × 1750
2300 × one thousand and eight hundred × 2200
2400 × two thousand × 2300
equipment mass kg
145
400
1000
1500
2000
technical parameter table of stl80 water jacket centrifuge for Jiangxi Nielsen centrifuge gold mine

6. Centrifugal concentrator is also called centrifugal chute. At present, there are many kinds of centrifuges, but their structures are basically the same. When the centrifuge rotates at high speed, it proces great centrifugal force to strengthen the gravity separation process, so that the fine particles can be recovered more effectively. Its appearance successfully solves the full recovery of fine particles. Therefore, it is widely used to recover tungsten, tin, iron and other slimes.

7. Desilication and desliming machine, centrifugal concentrator is also called centrifugal chute. Centrifugal desliming machine is a new type of gravity separation equipment for separating micro fine ore, which is mainly used for beneficiation of gold, silver, tin, manganese, tungsten, iron, shaft, rare earth and other elements< There are many kinds of centrifuges, but their structures are basically the same. When the centrifuge rotates at high speed, it proces great centrifugal force to strengthen the gravity separation process, so that the fine particles can be recovered more effectively. Its appearance successfully solves the full recovery of fine particles. Therefore, it is widely used to recover tungsten, tin, iron and other slimes

use and maintenance
1. Turn on the motor to make the drum rotate in the specified direction
2. Start the mortar pump first and then the feeding gate
3. Stop feeding and add water to wash the concentrate after 3-5 minutes of operation
4. Pull the handle of ore separation box to concentrate position.

8. Zhengzhou Jintai mineral processing equipment Co., Ltd

9. 1. Feed quantity
2, feed concentration
3, feed particle size
4, impurity and water quality