China's Coal Dense Medium Cyclone

7/28/2019 China's Coal Dense Medium Cyclone

1/9

China's Coal Dense Medium Cyclone

Serial No.:ICMO2013.1.1

I N D U S T R I A L C H A N N E L


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1966 the Branch successfully developed two products

dense-medium cyclone with a diameter of 500mm and built

the separation system of dense-medium cyclone in Liaoning

Caitun. Subsequently, the Branch successfully developed

two products dense-medium cyclone with 600mm and

700mm.

1977 the Branch started to develop three-product

dense-medium cyclones, non-magnetic medium

dense-medium cyclone and fine medium dense-medium

cyclone.

1981 the Branch successfully developed 3NZX500/350

pressure feeding three products dense-medium cyclone, and

passed the national identification as achievements in

scientific research during the "Eighth Five-Year Plan" period.

1989, the Branch began to study the three-productdense-medium cyclone that utilized the gravity feeding mode,

and in 1992 successfully developed 3NWX700/500 gravity

feeding three-products dense medium cyclone, industrialize

this technology, in the same year past the national technical

evaluation and won the patent, and then extended the

technology gradually.

1999 Coal Preparation Branch successfully developed the

three products dense-medium cyclone (type 3NWX1200A

type) of Chinas first large gravity feeding, which was

successfully utilized in Laowuji Coal Preparation Plant inPanjiang, Guizhou.

2000- Now In order to improve the separation sharpness

and economy of the dense-medium cyclone coal preparation

and make advanced and efficient dense-medium cyclone

coal preparation technology more widely extended, the

Ministry of Science and Technology issued a research topic

of key technology research on new process of the

dense-medium cyclone coal preparation during the Tenth

Five Year Plan, in December 2004, successful was the

commissioning of the technical renovation project of Shanxi

Jinyang Coal Separation Plant that used the new process of

coal preparation researched during the Tenth Five Year

Plan, cooperated with the new process, Coal Preparation

Branch successfully developed the gravity feeding three

products dense-medium cyclone (invention patent No.:

02158903.8), laid the foundation for the development of

China's dense-medium coal preparation technology and the

simplification of the coal preparation process as well as the

bigness of the coal preparation plant, and made important

contributions to the rise of the technical level of Chinas coal

preparation.

1958 China Coal Research Institute Coal Preparation

Branch start the research of dense medium coal separation

process with the magnetite powder as coal separationmedium.

Coal Preparation Branch of China Coal Research Institute,

established in 1956, is the only science and technologyinstitute in China engaged in research in coal preparation. So

far, more than 80% of the process and equipment technology

used by Chinas coal preparation plants is originally from

Coal Preparation Branch, especially, the dense medium coal

preparation technology and equipment is result of long term

effort and innovation. The three product cyclone invented by

Coal Preparation Branch has a 95% market share in Chinas

coking coal preparation plants.

FavorSea Industrial Channel Limited is appointed marketing

agent of Coal Preparation Branch of CCRI. FavorSea is

uniquely positioned to serve as a strategic global marketing

partner to China coal industry's leading innovators. The

product and service include three/two product dense medium

cyclone, CCRI pump, KDZG belt conveyor system, super

sizing crusher, coal pipeline transportation system, coal

preparation plant and coal mine designing and EPC

contracting etc.

Research History of Chinas Coal

Dense Medium Separation

Technology

1

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After problems, such as complicated process, high power

consumption and etc. are solved, large diameter dense-

medium cyclone, especially three-products dense-medium

cyclone is high in separation efficiency, and can be used to

simplify the coal preparation process and reduce the

equipment number and land occupied of the coal preparation

plant, greatly lower the production cost and therefore it

capture the market gradually in China.

The continuous development of the large-diameter

dense-medium cyclone has a far-reaching significance for

the development of coal preparation technology, especially

for the development and promotion of the dense medium coal

preparation technology.

High-level optimized

design and high-precision

processing technologies

ensure the products quality

Simple structure, smalloccupied space for overall

unit

Large capacity, high

separation sharpness

The lining adopts the

highly wear resistant

composite ceramic

materials developed by

ourselves, and is featured

by high strength and high wear resistance, which ensures theservice life of the cyclone

Wear resistance measures have been taken for all

wearing positions and wearing parts

The advanced and reliable intelligent control system is

available. The coal preparation process monitoring system,

which is featured by advanced technology, strong function,

outstanding control performance and high reliability, may be

provided based on the needs at the site. In addition, the

digitized control and display of the equipment parameters are

possible based on the needs of customers

1990s was the era of the rapid development of Chinas

dense-medium coal preparation technology and the wash

volume, in which the fastest development is the coal

preparation technology of the dense-medium cyclone, the

development momentum of Chinas dense-medium coal

separation first came from the state environmental protection

policy and the sustainable development strategy of the

national economy, the Chinese government from the actual

situation, clearly took coal as basic energy, strived to

enhance the proportion of high quality coal, increased

development efforts of the clean coal, encouraged andsupported the development of the coal preparation and

promoted the adoption of dense-medium coal preparation

methods of high efficiency.

In late 1990s, in the promotion of policies and market,

Chinas research and design units made a lot of research

work in equipment, technological process, plant structure and

etc., and China Coal Research Institute Coal Preparation

Branch, as China's leading enterprises in the field of coal

preparation, obtained a number of achievements in scientific

research, led the progress of Chinas coal preparationtechnology, particularly, did a lot of work in the largeness of

the dense-medium cyclone, so that the plant investment and

operating costs were greatly reduced, and also production

management and separation efficiency were significantly

improved, and provided a good foundation for the massive

industrialized promotion of the coal preparation technology of

Chinas dense-medium cyclone.

Features of Dense Medium

Cyclone From CCRI

The Rapid Development of The

Dense Medium Cyclone in China

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4/9

The multi-medium series of gravity feeding three products

dense medium cyclone is the new generation of high-endtechnical product developed by Tangshan Branch by

targeting at the problems during the large-scale development

of cyclones and through the countless experiments by the

research workers (invention patent No.: 02158903.8). This

product is the key equipment used for separation of 0-100mm

size fraction raw coals. It has such advantages as low energy

consumption, long service life, convenient adjustment, low

degradation rate of coal and easy model selection of

supporting equipment. The supporting processes have such

advantages as less initial investment, small occupied space,

simple technological process and low costs.

All key technical parameters are analyzed and designed

using the international advanced computational fluid

mechanics technologies;

High separation sharpness, which effectively ensures the

recovery of refined coal;

Few wearing parts, low equipment maintenance costs;

Large capacity and high top size, which meets the

large-scale and modularization requirements of coal

preparation plants;

Low energy consumption and low medium-feedingpressure, which reduces the overall wearing and prolongs the

service life of the equipment;

Easy adjustment, easy model selection for support

equipment

All standard parts adopt the top brand products in China to

ensure the good reliability and mechanical performance of

the equipment.

In the product design, such advanced analysis and design

software as Fluent, Pro/E and Solidworks are fully used for

optimal design

Design and manufacture customized equipments for

customers based on the special requirements, on-site spatial

environment or factory structure restrictions. The

selection is comprehensively considered the site application

in different use, such as the coal preparation system has

jigging pressure ,pressure feeding dense-medium, gravity

feeding dense-medium and so on; Different coal preparation,

such as the characteristics of coal, size consist and the

different requirements of the products. Our products consistof tens of models and products of hundreds of specifications.

Therefore, we have no restriction when recommending our

products, and can objectively recommend or design products

with proper technologies and values for customers by fully

considering the design capacity of the coal preparation plant,

coal quality and requirements on products. We recommend

the models based on the basic theory and our experience in

the actual application of thousands of products.

Technical Parameter of Main

Products

1.Multi-Medium Gravity Feeding Three

Products Dense Medium Cyclone.

Technical Features


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Feed the qualified dense medium suspension of single

density into the cyclone under the proper pressure. The raw

coal is fed into the cyclone by relying on gravity to separate

clean coal, middling and refuse successively, which has

simplified the process and reduced investment.

The separation density of the secondary cyclone may be

steplessly regulated online in a convenient and flexible way,

which guarantees the quality of the clean coal and middling;

Raw coals enter the cyclone by relying on gravity, which

reduces over crushing of materials;

High top size, large capacity, strong refuse discharge

capability, strong adaptability;

Good wear resistance, composite ceramic materials for

lining, long service life;

Special cyclones may be designed according to

customers' needs.

.

2.Gravity Feeding Three Products

Dense Medium Cyclone

Technical Parameter

Technical Features

Note: The above are the conventional models. We may design the proper

TypeFeeding Size

mm

the least working

pressure

MPa

Capacity

t/h

1500/1100 110 0.22 550-750

1400/1050 105 0.21 450-600

1350/950 100 0.19 400-550

1300/920 100 0.18 350-450

1200/850 90 0.15 300-420

1100/780 80 0.12 250-350

1. Center overflowing tube of primary cyclone

2. Medium inlet

3. Feeding vortex finder of primary cyclone

4. Middle part of primary cyclone

5. Discharging vortex finder of primary cyclone

6. Feeding partition board

7. Feeding elbow

8. Collecting tube of secondary cyclone

9.Adjusting device

10. Overflow cap of secondary cyclone

11. Center overflow cyclone of secondary tube

12. Vortex finder of secondary cyclone

13. Part one of cone

14. Part two of cone

15. Spigot

Technical Parameter

Parameter

Specification

Feeding Size

mm

Medium feeding

pressure

MPa

Capacity

t/h

1400/1050 100 0.30~0.40 400~550

1300/920 90 0.28~0.36 300~450

1200/850 85 0.18~0.28 280~400

1100/780 75 0.16~0.25 230~330

1000/700 70 0.15~0.22 180~280

900/650 65 0.14~0.19 130~220

800/570 55 0.12~0.16 90~140



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Fully mix the raw coal with the qualified dense medium

suspension of single density, feed it into the cyclone underthe proper pressure, and separate clean coal, middling and

refuse successively, which has simplified the process.

High separation sharpness and wide applicability, suitable

for separation of easy-to-wash, middle-difficult-to-wash,

difficult-to-wash and extremely-difficult-to-wash coal;Good wear resistance, composite ceramic materials for



customers' needs.

3NZXseries pressure feeding three products dense-medium

cyclone

.

3.Pressure Feeding Three Products

Dense-Medium Cyclone

Technical Parameter

Technical Features


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1. Overflow cap of primary cyclone

2. Central overflow tube of primary cyclone

3. Feeding

4. Feeding vortex finder of primary cyclone

5. Middle part of primary cyclone

6. Bottom of primary cyclone

7. Overflow cap of secondary cyclone

8. Central overflow tube of secondary cyclone

9. Vortex finder of secondary cyclone

10. Part one of cone 11. Part two of cone 12. Spigot

Parameter

SpecificationFeeding Size

mm

Medium feeding

pressure

MPa

Capacity

t/h

1400/1000 100 0.28~0.38 400~550

1300/920 90 0.26~0.34 300~450

1200/850 85 0.17~0.26 280~400

1100/780 80 0.15~0.24 230~330

1000/700 70 0.14~0.20 180~280

900/650 65 0.13~0.18 130~220

850/600 60 0.12~0.17 100~180

710/500 50 0.08~0.14 70~120

600/400 40 0.06~0.10 50~70

500/350

25 0.05~0.10 25~60



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High separation sharpness and high efficiency;

Low lower limit of separation;

Wide scope of application, suitable for separation of

easy-to-wash, middle-difficult-to-wash, difficult-to-wash, and

extremely-difficult-to-wash coal;Good wear resistance, composite ceramic materials for



customers' needs.

High separation sharpness and high efficiency;

Low lower limit of separation;

Wide scope of application, suitable for separation of

easy-to-wash, middle-difficult-to-wash, difficult-to-wash, and

extremely-difficult-to-wash coal;

Good wear resistance, composite ceramic materials for



customers' needs.

4.Pressure Feeding Two Products

Dense-Medium Cyclone

Technical Features

Technical Parameter

1. Discharging tube; 2. Discharging partition board; 3. Feeding

short connector; 4. Feeding elbow; 5. Part 1 of cone; 6. Part 2 of

cone; 7. Spigot

Excel 1 Technical parameter of Dense-medium cyclone

Excel 2 basic parameter of coal slime dense-medium cyclone

product

specification

basic parameter

installmentpoint

.

Feeding Sizemm

the leastworkingpressure

MPa

Capacityt/h

1500 1020 130 0.19 500700

1400 1020 120 0.18 450600

1300 1020 110 0.16 300500

1200 1020 100 0.15 250400

1100 1020 90 0.13 240350

1000 1020 80 0.12 160280

850 1020 60 0.10 130180

700 1020 50 0.08 90120

600 1020 40 0.07 5090

500 10

20

25 0.06 40

60

Note: The diameter of the cyclone tank may be designed and adjusted according to

customers' needs.



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5.Gravity Feeding Two Products Dense-Medium Cyclone

Technical Parameter

High separation efficiency, large capacity, strong adaptability to

different raw coal

Separated materials enter the cyclone by relying on gravity,

which reduces over crushing of materials;

Good wear resistance, composite ceramic materials for lining,

long service life;

Special cyclones may be designed according to customers'

needs.

Technical Features


[email protected]



Tel: +86 10 8817 7742 Fax: +86 10 8817 7443

1 center tube;

2 discharging vortex finder;

3 feeding medium short connector;

4 cylinder body;

5 feeding vortex finder;

6 feeding partition board;

7 feeding elbow;

8 buffer tank

No.Specification

mmNWZX1200 NWZX1000 NWZX800 NWZX750 NWZX650 NWZX500

1 Internal Diameter of

Cylinder

1200 1000 800 750650 500

2 Range of feeding

size

80 70 6560

50 25

3 working

pressure(Mpa)

0.17-0.26 0.15-0.20 0.12-0.170.08-0.14

0.07-0.12 0.060.10

4 cycle Capacity (m3/h)1100

1300

700900 450550380450

280350 180230

5 Capacity(t/h)250400 180300 90150 80120 70100 4060



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6. Thickening and Classifying Cyclone (Set)

7. Highly Wear Resistant Lining of Cyclone

Technical Parameter

Technical Parameter

The thickening and classifying cyclone set is the ideal

equipment for thickening and classifying the ore pulp, and iswidely used for the recovery of coarse slimes at coal

preparation plants and the thickening and classifying of the ore

pulp before floatation. It plays an important role in closing the

wash water and reducing environmental pollution.

.

The highly wear resistant cyclone lining is developed by

Tangshan Branch of Tiandi Science and Technology co., ltd

through its research and experience of many years, and

through its numerous experiments in terms of erosion and

abrasion mechanism, formulation, mixing, shaping and fritting

of the ceramic materials. This product has extremely high

performance in erosion and abrasion resistance. It meets the

special needs of cyclone and the product performance reached

the international advanced level..

Simple and practical structure, reliable operation, good

adaptability;Good effects of thickening and classification;

Modular design, simultaneous application in a number of

equipments.

Technical Features

Parameter

Specification

Feeding Size

mm

feeding

pressure

Mpa

Feeding Size

g/l

Capacity

m3/h

cyclone(series) 0-3 0.05-0.20 80-150

Design relevant products

according to needs

performance

index

Hardness/HV bending

strength/MPa

density/g/cm3

1800 280 3.69


Documents

China's Coal Dense Medium Cyclone