Why H-TBS? Teetered Bed Separator, or Hydrosizer

2020-02-24 0 Views (1235)

Why H-TBS? (Teetered Bed Separator, or Hydrosizer)


Heng Huang, MAusIMM, MD of HOT Mining

Dongxu Fu, Professor (Senior Engineer)

1. Successful worldwide application of TBS

The world's major coal producing countries such as Australia, China, Mongolia (Energy Resources LLC applied H-TBS in UHG CHPP), Russia and the United States have verified the broad adaptabilities of TBS. The fact that the performance of TBS coarse slime separation far exceeds those of other similar products. It has become the first choice of coarse slime separation.


2. The technical advantages and adaptabilities of TBS – Compared with Spiral Separator Spiral

  • EP value

  The EP(guaranteed value of TBS is 0.12/,  and under normal circumstances it is about 0.08.The minimum EP value of TBS can reach 0.038, which makes heavy-media separation possible by TBS, while the EP value of the spiral separator is 0.2.

  • Separation density control

  TBS have a density control system to ensure the accuracy of density separation, separation density can be adjusted to different degrees so as to adapt to the  feed quality variation. The separation densities range from 1.4 to 1.9. In the separation density range, the fine coal ash remains stable. Fine coal ash can be easily achieved using TBS which controls separation density automatically. 

  Spiral Separator does not have a density control system, which means it can’t control the  separation density automatically. The separation density of Spiral Separator ranges from1.6 to 1.9,, which makes it almost impossible to separate low ash fine coal.

  • Separation Efficiency

  In separating fine coal with the same amount of ash, the fine coal recovery of TBS is higher than the spiral separator. Under the same separation density, the amount of ash in separating fine coal using TBS is lower than that using the spiral separator.


 The worldwide preparation plants have confirmed the fact that in coarse slime separation, the interference bed separator sorting is better than the spiral separator, which makes it reasonable to say that the interference separator is the best choice for coarse slime separation.


The other equipment, such as: spiral separator, are applied as TBS auxiliary equipment gradually while TBS has become the first choice.


Density Control System of HTBS

3.Commissioning training and technical support

Experienced engineering team: The preparation engineers and TBS equipment engineers of HOT has any successful experiences, which means they can provide the ore suitable and practical support for preparation plants.

  • Perfect training system

  Providing a wealth of related documents similar experiences sharing, coal preparation site training, and the specific training programs tailored for customers is our pleasure.

  • Technical support

  Normally, after the TBS commissioning and technical training by our engineers, technical support is almost unnecessary because of the high-level automatic operation and centralized control regulation of TBS. If technical support is urgently needed, remote video guidance can be provided immediately.(The data access should be available for HOT temporarily or remote video guidance can be provided by communication tools like Skype.)

  For emergency support, HOT can provide remote assistance (Coal temporary need for HOT open data access, or remote video guidance through Skype and other tools).

4. The actual production data report of TBS

Please refer to Annex "Tianyuan coal preparation plant TBS-3.6 -- April Report 2015-5"

This is a one-month running record of Coking Coal Preparation Plant (main production data, equipment performance, product indexes) for reference.


(1) The amount of washing ash using TBS can be as high as 40% to 50%.

(2) This coal preparation assesses the coal gangue index mainly.(The TBS technical parameters can be adjusted according to the actual needs of the preparation plant.)

(3) The diameter of this type of TBS which has four discharge systems is 3.65m.

5. Brand-new H-TBS Product, the Three-Product Teetered Bed Separator


Three-product teetered bed separator, labeling as T-TBS, as an upgraded device, is emerging to get rid of an awkward facts thoroughly that traditional TBS could only produce two products, overflow and underflow. This paper introduces the structure characteristics of T-TBS with type I and type II, and its four possible applications. On a basis of actual separation performance, it’s demonstrated that two-stage separation is necessary when treating coal slime. The float-sink analysis shows that TPS has the similar separation performance as heavy medium cyclone when treating easy-to-clean coal with -1.0 mm size. Combining the washability of the feed, when clean coal with ash 8.56 % is produced, theoretical separation density is about 1.95 g/cm3 and theoretical recovery is 85 % from washability curve while actual recovery is 82.54 % and separation efficiency goes to 97.11 %. The disadvantage of traditional TBS could be exaggerated when treating difficult-to-clean coal due to only producing two products. The birth of TPS provides a better way of solving the problem.


H-TBS(Three-Product Teetered Bed Separator) by HOT Mining Tech

More information about TPS contact us

Kira     email:kira.zhang@hot-mining.com     Tel/WA:+86 15281051932

Teresa   email: teresa.zheng@hot-mining.com   Tel/WA:+86 15281626323