Know The Basic of Slurry Pumping

Slurry can be really tough on pumps! Being thick, abrasive & with high specific gravity, slurry is one of the most challenging fluids to move. 

 

What is slurry?

Slurry is a mixture of solids and liquid, generally water. The particles can be both abrasive & non abrasive, although abrasive particles are very much common. The purpose to move slurry can be transporting as much solids particles as possible, hydraulically, along with the given liquid.

Factors to be Considered in Slurry Pumping

• Particle size- d85= 3mm- means 85% of particles have a diameter of 3 mm or less.

• Specific gravity of solids particles (SGs)

• Specific gravity of liquid (normally water which is 1)

• Concentration of solids by volume (Cv)

• Concentration of solids by weight (Cm) (where Cv, Cm is given in % it means it is for slurry)

• Specific gravity of slurry (SGsl)

• Mass fraction (% of particles below 75 μm)

• Shape of particles (Round or Flat)

Characteristics of Slurry

1. Non – Settling Slurry - In this particle size is less than 60-100 μm. A non settling slurry can be defined as a Homogenous Mixture. It is comparatively easy to pump non-settling slurry.

2. Settling Slurry- In this particle size is greater than 100μm. Settling slurry can be defined as Pseudo-Homogenous Mixture OR Heterogeneous Mixture. This is where the demand on slurry pumps increase.

Few Slurry Pump Applications

• Steel Plant- Pumps for mill scale transportation.

• Thermal Power Plants- Pumps for fly Ash slurry handling.

• Hydel Plants & projects- Pump for removing silt and sediment from tailing dams, trenches, channels, Dam gallery, coolant sumps, etc…

• Mineral Processing Units.

• Mines & Quarries

• Various industrial uses like E.T.P, Cement plants, Fertilizer & Pharmaceutical Plants.

• Sand dredging, washing and cleaning.

• Lagoon cleaning & dredging near dockyard and ports.

Why Darling Pumps?

Darling Pumps with its comprehensive series of pumps can provide unique solutions for pumping of both - Settling as well as Non Settling Slurries.

We handle water of all types & quality.

• From clear water pumping to slurry handling we have solution for all.

• As we understand water better, we can help you handle it in a more effective manner.

• We provide customized solutions to all your pumping needs.

Check out our range of slurry pumps at http://www.darlingpumps.in/slurry_pumps.html To know more, call 

+91 99819 92838.

Oil Filled Pumps – A Quick Analysis of its Pros and Cons

The debate between air filled and oil motors is an ongoing one! So, basically what is an oil filled motor and what is an air filled motor? An oil filled pump is defined as having the motor cavity filled with oil, usually to cover the upper bearing and windings. An air filled pump is one that does not use any oil to fill the motor cavity. Wondering whether you should consider oil or air filled pumps for your application? Well, talk to the experts in pump industry today to get reliable solutions for your pumping problems.

Oil filled motors lower the winding temperature through extra heat transfer away from the stator, to the housings, and then out into the liquid. Heat kills electrical components so anything that is done to lower the temperature inside the pump will give a long lasting product.

Other advantages of oil filled pumps include –

• Better lubrication of bearing
• Lesser frequency of maintenance
• Ensure long life of pumps
• Transfer heat easily
• Easy to maintain

The downsides to oil filling are the environmental consequences and a lower overall efficiency due to churning losses when compared to an air filled type motor. The environmental issue can be easily resolved by using a type of oil that is environmentally friendly. The lower efficiency carries about 2% increase in overall energy costs. Both of these penalties are pretty easy to offset when the pros of oil filling are explored.

Why Choose Darling Pumps?

• Darling pumps do not require any oil replacement since it never gets heated up beyond its limits.
• The pumps are generally designed for 360 volts to 440 volts Electric supply, which to certain extent negates the damage caused due to voltage fluctuation.
• Extra heavy duty Bearings does not require frequent maintenance.
• Our Oil filled design ensures proper lubrication to bearings even in case of continuous duty.
• As Darling Pumps are wound with PVC Insulated winding wire, in case of emergency the motor can easily rewound at site itself. You don't have to send it to factory for repairs.

For further details, get in touch at +91 99819 92838 for further details.

Innovative Pumping Solutions for Steel Sector by Darling Pumps Indore

Steel is crucial to the development of any modern economy and is considered to be the backbone of human civilization. The level of per capita consumption of steel is treated as an important index of the level of socio-economic development in a country. Increasing demand on steel by sectors such as Infrastructure, Real estate and Automobiles at home and abroad has put India on the world map.

Steel has always remained a core sector for Darling Pumps. We cater to all most all pumping requirements of Steel Sectors. The liberalization of the industrial policy and other initiatives taken by the government has spurred the growth of the private sector in the steel industry. With the increase in global population, there is a greater need of steel to build public-transport infrastructure. Emerging economics like India will continue to drive demand, as well require a significant amount of steel for Urbanization and Industrialization purpose. India’s steel sector is anticipated to witness investment of about Rs. 2 trillion (US$33.26 billion) in the coming years.

With Over 750 Models in its products range, Darling Pumps priorities mainly in catering to exacting needs of its customers. Optimizing pumping solutions is our forte.

Darling Pumps, can provide pumps for entire gamut of applications in Steel Plants like:-

• Intake Water Supply
• Hot Strip Mill
• Casters
• Coke Oven
• Blast Furnace Wagon Tippler
• Mill Effluent sumps Pig Iron Plants
• Smelter
• Dust Suppression & Emergency Drainage Sintering Plants.
• Tailing Ponds
• Sponge Iron Plant
• Iron ore/dust slurry handling Mill scale slurry handling.

Darling Pumps is an ISO-9001:2008 Company, having CE Certification, a leading manufacturer ofsubmersible pumps under the brand name “DARLING”. We have been manufacturing various types of Submersible pumps for over last 30 years.

Darling Pumps with its extensive basket of Clear Water pumps to Slurry handling pumps, is better placed to cater to exacting needs in various steel plants & is also better placed to provide them effective & customized pumping solutions. We also have specialized Mill Scale Slurry Handling Pumps.

Darling Pumps with its innovativepumping solutions has once again come with new “HT SERIES” Dewatering pumps, especially from Steel Sector. These pumps are not only equipped to handle iron dust mixed abrasive liquids, but they can also handle high temperature liquids (up to 85 degree) as well. These pumps are very much ideal in Caster, Coke Oven, Hot Strip Mill & in many other such areas in Steel Plants which have to deal with high temperature liquids. We have done many successful installation of these type of pumps in some of the leading private steel plants in India.

For any further questions, call +91 99819 92838.