Table 1 - Differing DSG grades Conveyability in Dense Phase Mode
Self Adaptive Dense Phase Conveying Technology solution. Mineral Gypsum 1000 kg/m3 63 Conventional dense phase conveying systems OK
Dried DSG 1 1050 kg/m3 50 Conventional conveying systems problematic
Dried DSG 2 1019 kg/m3 60 Conventional conveying systems problematic
Dried DSG 3 1045 kg/m3 41 Conventional conveying systems problematic
Dried DSG 4 1045 kg/m3 40 Conventional conveying systems problematic
Dried DSG 5 810 kg/m3 26 Conventional dense phase conveying systems OK
Dried DSG 6 860 kg/m3 30 Conventional dense phase conveying systems OKClyde Materials Handling tested all of the materials described in Table 1. The tests revealed that conventional dense phase conveying systems could be used to transport DSG grades 5 and 6, and also the mineral gypsum. However, DSG grades 1 through 4 were impossible to convey in a conventional dense phase system. As a result of these findings, Clyde Materials Handling was required to invent a new dense phase pneumatic conveying solution which would be able to effectively transport both mineral gypsum and varying grades of DSG.Clyde Materials Handling achieved this objective, and it came in the form of a Description Bulk Mean Findings Density particle size um
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Self Adaptive Dense Phase Conveying Technology > Solving the Problems Presenting by DSG
Conventional Dense Phase Conveying System Arrangement As a result of some very costly experiences by several plants operating with DSG
pneumatic conveying systems, Clyde developed a self-adaptive dense phase conveying solution that has proven its capability to handle many different grades of DSG, mineral gypsum and a mix of both materials.The main features of this adaptive conveying system centres on the utilisation of a internal air bypass feature, a material handling valve and use of control algorithms to control the pressure in the pipeline by adjusting the pipeline material loading. • Internal By-Pass – “Autoflow” The internal by-pass arrangement functions by allowing air to be allocated to the point where a blockage forms. As the pressure in the line fluctuates, varying amounts of air can escape to be put to better use further down the line to clear any blockages that may be forming.
CMH Gypsum Brochure - 32078 7
