GN Company is a professional manufacturer of Decanter Centrifuge from China Mainland, and has rich experience of about 10 years, and now has developed three factories in China, and two branches in the USA and Russia.

GN Technical Team has been focus on research and develop the centrifuge technology for about 10 years, and here are some introduction about two important items, which GN Team has experience.

1. Control of tempering effects

The larger the solid phase particles in the material; the greater the difference in gravity between the liquid and solid phases, and the smaller the viscosity of the suspension, the easier it is to separate, otherwise it is difficult to separate. For this reason, before the suspension enters the decanter, the separation conditions can be improved by appropriately increasing the feeding temperature of the material to reduce the viscosity or by adding flocculent to coagulate the solid phase.

Centrifugal dehydration generally uses high-efficiency synthetic polymer flocculants instead of inorganic salts. The reason is that the addition of inorganic coagulants will make the sludge volume expand, and the centrifuge is closed forced dewatering, which has stricter requirements on the amount of sludge, so if inorganic salt coagulants are used, the dewatering of the centrifuge will be reduced Ability is greatly reduced.

2. The control and comprehensive regulation of the amount of mud feeding

Each centrifuge has a maximum amount of mud feeding. When the actual mud feeding amount exceeds this value, the centrifuge will lose the dynamic balance of solid phase and liquid phase, and will be damaged in severe cases. Therefore, the decanter should be strictly controlled during operation.

Within the allowable range, when the mud quality and conditioning effect are constant, the larger the amount of mud, the lower the solid recovery rate and the solid content of the mud cake. volume will increase.

In addition, each decanter has a limiting maximum solids flow. If the solid content of the inflow exceeds the limit value due to the increase of the solid content of the sludge, etc., the centrifuge will be overloaded and stop due to excessive torque.

The method of selecting the appropriate feed flow rate: first adjust the feed flow rate to a smaller value, then start the decanter and work for a period of time until the speed of solid phase discharge is constant. Observe whether the solid phase discharge amount and discharge speed are appropriate. If not, change the feed flow accordingly until the solid phase discharge amount and discharge speed are appropriate. The feed flow rate at this time is usually an appropriate value. Sometimes this value can be small.

For example, for a decanter with a processing capacity of 10m3/h, due to the high solid content of the feed suspension, the actual suitable feed flow rate may only be about 2m3/h.

Since the inflow solid content is constantly changing, it is not certain whether it will exceed the limit value. Or if there is no inflow solid content measurement on site, do not adjust the feed flow to the maximum flow rate of the decanter to prevent the over-torque failure of the decanter.

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