月度归档： 2022 年 1 月

GN Company has been focus on manufacturing Decanter Centrifuge for about 10 years. Now it has three factories in China Mainland, and two subsidiaries outside China, one is in the USA, and the other one in Russia.

GN Technical Engineers have rich experience on research and develop the centrifuge technology, and here are some of their experience about analysis and elimination of abnormal problems.

1. The separation liquid is turbid, and the solid recovery rate is reduced. The reasons and solutions are as follows:
(1) If the thickness of the liquid ring layer is too thin, the thickness should be increased.
(2) The amount of mud entering is too large, and the amount of mud entering should be reduced.
(3) The speed difference is too large, and the speed difference should be reduced.
(4) The inflow solids are overloaded, and the amount of mud entering should be reduced.
(5) The screw conveyor is seriously worn and should be replaced.
(6) The rotating speed of the drum is too low, and the rotating speed should be increased.

2. The solid content of the mud cake decreases. The reasons and solutions are as follows:
(1) The speed difference is too large, and the speed difference should be reduced.
(2) The thickness of the liquid ring layer is too large, and its thickness should be reduced.
(3) The rotating speed of the drum is too low, and the rotating speed should be increased.
(4) The amount of mud entering is too large, and the amount of mud entering should be reduced.
(5) The dosage of dry sludge should be reduced if the dosage of conditioning and tempering is excessive.

Welcome to contact GN Sales Managers, and they would offer one stop turkey solution based on clients’ requirement.

GN Company is manufacturer of Decanter Centrifuge from China Mainland, and has capability of manufacturing decanter centrifuge with bowl size 220mm, 360mm, 450mm, 550mm, 650mm, and 760mm.

GN Technical Team has about 10 years’ experience on decanter centrifuge and has continuously improved GN product. Here is some experience shared by GN Technical Team. When the amount of sludge is constant, the thicker the liquid ring layer, the longer the sludge is separated in the liquid ring layer, and the more sludge will be separated. On the other hand, the thickening of the liquid ring layer reduces the possibility of some disturbed small particles being lost with the separation liquid.

Combining the above two aspects, the thickening of the liquid ring layer generally improves the solid recovery rate of dehydration.

However, the thickening of the liquid ring layer will correspondingly shorten the drying area, so that the sludge separated from the liquid ring layer will not have sufficient time to be “dried”, so the solid content of the mud cake will decrease.

When controlling the thickness of the liquid ring layer, a trade-off should be made between the high solids recovery rate and the solids content of the mud cake. Unless the dewatered sludge needs to be incinerated, in general, there is no need to pursue an excessively high solid content in the mud cake, and the higher the solid recovery rate, the better, so the thickness of the liquid ring layer should be increased as much as possible.

Welcome to contact GN Sales Managers and they would supply one stop turnkey solution based on clients’ project.

Best & Regards,

Kevin Liu

Regional Manager
GN Separation & Conveying

Hebei GN Separation & Conveying Equipment Co.,Ltd
Tel:+86-316-5276988/9
Mob (WhatsApp/Wechat): +86-15810901775
Email: Kevin@gnseparation.com

GN China: www.gnseparation.com (Langfang/Beijing)
GN USA: www.gnsolidsamerica.com (Houston, Texas)
GN Russia: www.gnseparation.ru (Moscow City)