GN Company is professional manufacturer of Decanter Centrifuge, and here is a brief introduction about the technology of Decanter Centrifuge.

Compared with other separation machines, centrifuges can not only obtain solid phase with low moisture content and liquid phase with high purity, but also have the advantages of small volume, good sealing, continuous operation and automatic remote excavation. Therefore, centrifuges are widely used in chemical industry, petrochemical industry, petroleum refining, light T, medicine, food, textile, metallurgy, coal, beneficiation, shipbuilding, environmental protection, military industry and other departments, Such as coal powder recovery in wet coal mining; Purification and reuse of drilling mud for oil exploitation; Enrichment of uranium isotopes; Sludge thickening and dewatering of sewage treatment; Refining of petrochemical products; Antibacterial cable, extraction of pesticides; Manufacturing of milk, yeast, beer, fruit juice, granulated sugar, orange oil, animal Cypress oil, rice bran oil, starch and other foods; Fabric fiber dehydration; Centrifuges are required for the purification of lubricating oil and fuel oil. It can be seen that centrifuge has become widely used separation equipment in all sectors of the national economy.

The application functions of centrifuge mainly include dehydration, clarification, concentration, classification, separation and so on. Different centrifugal models must be selected according to different material characteristics and separation requirements, which lead to the problem of centrifuge selection. In the actual production process, due to the selection of appropriate separation equipment in some projects, the process is simple, the energy consumption is reduced, the product quality is improved, and good economic benefits are obtained; However, some centrifuges are improperly selected, which makes the production process unable to proceed normally, resulting in great economic losses. Therefore, in engineering design and technical transformation, the problem of how to correctly select centrifuges has been recognized and valued by the majority of engineering and technical personnel.

GN Company is a professional manufacturer of Decanter Centrifuge from China Mainland, and now it has supplied Centrifuges to more than 30 countries, including Canada, USA, Brazil, Argentina, Peru, India, Singapore, Malaysia, Philippines, Vietnam, Russia, UK, Portugal, Poland, Holland, Germany, Nigeria, Egypt, etc.

GN Company has a team of professional engineers with rich experience on centrifuge technology, here are some items shared by them.

The torque of the rotating shaft is too large. The reasons and solutions are as follows:

(1) The amount of mud entering is too large, and the amount of mud entering should be reduced.

(2) The amount of inflowing solids is too large, and the amount of mud entering should be reduced.

(3) The speed difference is too small, and the speed difference should be increased.

(4) If the gearbox fails, it should be refueled and maintained in time.

Excessive vibration of the decanter, the reasons and solutions are as follows:

(1) If the lubrication system fails, it should be repaired and eliminated.

(2) The rotation of the drum is unbalanced due to the unclean washing, and it should be stopped of feeding into the mud, and clean with clean water.

(3) The machine base is loose and should be repaired in time.

The energy consumption increases and the current increases. The reasons and solutions are as follows:

(1) If the energy consumption suddenly increases, the mud outlet of the decanter may be blocked.

Clean up after downtime.

(2) If the energy consumption gradually increases, there may be accumulated accumulation between the drum and the casing. A certain amount of sludge thus hinders the operation of the drum.

Welcome to contact GN Sales Engineers, and they would offer professional solution for your 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: This email address is being protected from spambots. You need JavaScript enabled to view it.

GN China: www.gnseparation.com (Langfang/Beijing)

GN USA: www.gnsolidsamerica.com (Houston, Texas)

GN Russia: www.gnseparation.ru (Moscow City)

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.

GN Company has supplied one unit of 2-phase Decanter Centrifuge, with bowl diameter 220mm, and capacity 1000liters per hour for client in Europe. Here GN Engineers would like to introduce more technical details about Decanter Centrifuge.

In actual operation, the mud quality and mud amount of the sludge will change. In order to ensure that the dewatering effect remains unchanged, the user can choose a reasonable price according to the material properties of the suspension, the requirements of the liquid and solid phases after separation, and the processing capacity. Select the relevant parameters of the centrifuge, such as: processing capacity, drum speed, differential speed between the drum and the screw, overflow plate diameter, etc., to obtain a satisfactory separation effect.

If the drum of the centrifuge is driven by a frequency converter, the speed of the drum can generally be adjusted stepless within a large range. By adjusting the speed, the separation factor of the centrifuge can be controlled to adapt to the requirements of different separation liquids. Generally speaking, the larger the solid phase particles in the separation liquid, the greater the density, and the lower the separation factor is required, and vice versa, the higher the separation factor is required. With the increase of the rotating speed of the drum, the separation factor increases, the separation effect improves (after the differential pulley is determined), the differential speed between the screw and the drum increases, and the processing capacity increases, but the vibration, The noise will also increase and the service life will decrease. Therefore, it is very important to select the appropriate speed under the premise that the separation requirements can be met. If the drum is not controlled by frequency conversion, its rotational speed is fixed, that is, its separation factor is fixed.

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: This email address is being protected from spambots. You need JavaScript enabled to view it.

GN China: www.gnseparation.com (Langfang/Beijing)

GN USA: www.gnsolidsamerica.com (Houston, Texas)

GN Russia: www.gnseparation.ru (Moscow City)