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Cylindrical screen

Cylindrical screen is a sorting equipment with simple structure, convenient installation, reliable use and high efficiency, which has emerged in the world in recent years. It is widely used in the classification of materials at the discharge end of various large-scale self-milling machines, semi-self-milling machines, and ball mills, and has been successfully used in various metal mine beneficiation systems.

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Product introduction

Rubber cylinder screen

Cylindrical screen is a sorting equipment with simple structure, convenient installation, reliable use and high efficiency, which has emerged in the world in recent years. It is widely used in the classification of materials at the discharge end of various large-scale self-milling machines, semi-self-milling machines, and ball mills.

Rubber cylinder screen performance characteristics

The cylindrical sieve produced by Naipu Miner combines the basic excellent characteristics of all cylindrical sieves in the world. Using the original technology of Naipu Miner, the product has the following characteristics:

1. The screening efficiency is high and the mine is not blocked.

2. The structure is simple, it occupies less space, and it is easy to install and overhaul. There is no need to separately configure the driving device and power source.

3. Cylindrical sieve plate and deflector are made of high-resistance rubber or polyurethane material. Various sieve plates with hole shape and aperture can be configured according to customer requirements. Material and design can be selected according to user requirements, and the service life can reach 1 ~2 years.

4. The installation method of the cylindrical sieve plate is inlaid, without using a bolt, which is convenient for installation and removal; reliable, the sieve plate base strip is made of stainless steel, which can ensure that it will not be replaced for a long time, and it is the structure with the fewest times of screen replacement in the world. .

5. Low maintenance cost.

Structural form of rubber cylinder screen

The rubber cylinder screen product is mainly composed of a metal frame and a rubber screen or polyurethane screen. Naipu Miner can research and develop rubber cylinder screens with different structures that meet the requirements of the beneficiation process according to the different requirements of customers.

Screen installation diagram

Typical case of rubber cylindrical screen

Host model

Cylindrical screen specifications

user

Φ7.9x13.6m Ball mill

Φ3530x4805mm

SINO iron ore in Australia

Φ7.32x10.68m Ball mill

φ3000x3305mm

Jiangxi Copper Group Dashan Concentrator

Φ5.5x8.8m Ball mill

Φ2300x3466mm

VVARGEM GRAND mine in Vale, Brazil

Φ7.32x10.68m Ball mill

Φ3000x3940mm

CITIC Heavy Industries Zambia-KCM Project

Φ9.15x5.03m Ball mill

Φ3000x3605mm

Gold Group Ulugtushan Mining Company

Φ8.5x4m Semi-automatic mill

Φ2300x3741mm

Tongling Nonferrous Mining Company Dongguashan Concentrator

Φ11.58x7.01m Semi-automatic mill

Φ4232x4268mm

Oyu Tolgoi, Mongolia

Φ7.32x13m Ball mill

Φ3120x4390mm

Mexico Mining

The second concentrator of Mexico's largest mining company has 6 Φ7.32x13m ball mills, with a processing capacity of 150,000 tons/day. The cylindrical sieve of the mill used on site has insufficient screening capacity, and the material cannot be thoroughly screened through. The on-site technicians have optimized and improved many times, but the problem has not been solved.

In May 2019, the technicians of Jiangxi Naipu Mining Machinery New Materials Co., Ltd. visited the group's second concentrator on site, collected operating data and performed calculations and analysis on site to find the root of the problem, and completed the optimization design plan of the cylindrical screen And conduct conference exchanges and discussions.

In June 2020, a set of Φ7.32x13m ball mill cylindrical screen manufactured by Jiangxi Naipu Mining Machinery New Materials Co., Ltd. was installed and used on the No. 2 mill, and the screens of the three mills 2, 3, and 4 Sampling and analysis, the data are as follows:

 

Molino mill 2

Molino Mill 3

Molino Mill 4

Cylindrical screen feed

1250

1150

1250

Wet weight of oversize

1.7 Kg

4.6 Kg

5.10 Kg

Dry weight of sieve

1.212Kg

3.907Kg

3.062Kg

The particle size distribution of the material on the screen is as follows:

Molino mill 2

Molino mill 3

Molino mill 4

 

Slot de opening: 0.750"x 2

Slot de: 1” x 2”

Mezcla de slot opening: 1”x 2” and 1.5” x 2”

MALLA size

PESO

weight

% PESO

Weight percentage

PESO

weight

% PESO

Weight percentage

PESO

weight

% PESO

Weight percentage

FRACCION +1.00 in

85.700

7.070

133.700

3.422

0.000

0.000

FRACCION +3/4 in

237.300

19.578

91.500

2.342

82.800

2.703

FRACCION +1/2 in

603.000

49.748

975.000

24.954

1000.500

32.665

FRACCION +3/8 in

169.300

13.967

1040.800

26.638

1226.400

40.040

FRACCION +1/4 in

69.500

5.734

988.800

25.307

109.300

3.569

FRACCION +4

16.100

1.328

306.100

7.834

320.500

10.464

FRACCION +10

18.300

1.510

215.700

5.521

224.900

7.343

FRACCION +20

1.400

0.116

17.700

0.453

27.100

0.885

FRACCION +35

0.900

0.074

6.700

0.171

5.100

0.167

FRACCION +50

0.900

0.074

17.500

0.448

7.900

0.258

FRACCION +70

0.800

0.066

12.400

0.317

5.000

0.163

FRACCION +100

0.500

0.041

11.800

0.302

5.100

0.167

FRACCION +150

0.500

0.041

10.100

0.258

4.300

0.140

FRACCION +200

0.700

0.058

14.800

0.379

8.000

0.261

FRACCION - 200

7.200

0.594

64.600

1.653

36.000

1.175

Total总计

1212.100

100.000

3907.200

100.000

3062.900

100.000

80% P. P. micron

en Micras = + 1/2

 

76.40

 

30.72

 

35.37

The conclusion of the analysis of the test data: the operating effect of the cylindrical screen of the Naipu mining machine has exceeded expectations. Compared with the No. 3 and No. 4 mills, the on-screen material has been reduced by 69% and 60.4%. The particle size analysis table shows that compared with the other two cylindrical sieves, 76.4% of the particles larger than 0.5" in the cylindrical sieve of Naipu Mine are 76.4%, while the cylindrical sieves of No. 3 and No. 4 mills are 30.7% and 35.3 respectively. %.

Application note

1. Cylindrical cylindrical sieve and external conical sieve are mainly used in the mill to discharge ore and mass, remove coarse ore particles and broken steel balls, improve the classification efficiency of the cyclone and the service life of the pump.

2. The pre-graded self-returning cylindrical screen is mainly used for the ore discharge classification of the lattice ball mill and the self-mill, which effectively controls the ore feeding particle size of the next stage of the mill and meets the requirements of the beneficiation process.

3. The mass grading cylindrical sieve can not only remove coarse and broken steel balls, but also effectively control the ore feeding particle size of the next section of the mill, and return the intermediate particle size to the cylindrical sieve for re-grinding.

Related case

Rubber trommel screen case

ADD:52 xingyuan avenue, shangrao economic and technological development zone, jiangxi province, China

TEL:400-0793-789

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