Slurry pump
Perhaps the most precise definition for slurry is that any type of liquid that has a degree of impurity in itself, combined with some solids and materials. Generally, any liquid, such as clear liquids and light or heavy liquids, may contain some impurities.
Therefore, for the transport of these liquids, the liquid type and its properties must first be determined at least in a limited manner, such as the composition in the liquids, the size, volume, shape, nature of the particles, etc. are the factors that are necessary for the transportation of the liquid So that a slurry pump suitable for transfer can be selected.
Designing and manufacturing a slurry-pump is not as difficult as some other types of pumps, but the use of a precise, reliable design for the proper and long-term operation of the pump is very important.
For slurry pumping, it can be used with a variety of positive displacement pumps or centrifugal pumps, even for other types of pumps, such as some Venturi pumps, but in the meantime, none of the pump types have the efficiency and power of the centrifuge pumps, and is in fact the best choice for slurry transfer.
Many centrifugal pumps can smooth the pumping of heavy and hard in abrasive and long-term conditions. These types of pumps use a central power or centrifugal force, which receives the power to transmit energy from a rotating propeller, just as the other centrifugal pumps use.
The two main components of all slurry pumps is:
- IMPELLERS
- CASINGS
There are definitely many types of slurry, and each slurry has its own specific properties. Accordingly, in order to choose the type of slurry pump, the pump should be selected according to the general specifications. Therefore, generally, slurry pumps are classified according to the concentration of solids in the slurry.
If the slurry contains solids of about 5%, the centrifuge pump as a mine de-watering purposes for irrigation should be used, the general pumps for transferring slurry containing solids between 5% and 20% are used, heavy slurry with about 40% solids with heavy transfer pumps And if the amount of solids in the slurry is about 70% or more, then minerals and sand pumps for sand and gravel should be used. This is the simplest form of slurry pump selection for different purposes.
The permeability of the impeller can be considered as one of the main parameters of the classification of slurry pumps. Accordingly to the existing standards, the speed of the pump is determined by the type of tensile and abrasive classification, and it should be able to operate in a reasonable time from the time the service is provided, depending on the degree of wear and abrasion of the sink that it transmits.
However, there is no doubt that the best way to select and classify slurry pumps is to use solids used in various pump programs. Accordingly, we can say, simple liquid pumps are suitable for transferring liquids with solids up to 2 mm, including mud, clay, silt, sand and gravel, and so on.
Accordingly, the slurry pump structure is as follows:
- Clay and mud pumps are suitable for transfer of slurry containing solids up to 2 microns
- A typical pump is suitable for transfer of slurries containing solids between 2 and 50 microns.
- Small pumps are used to transfer slurries containing particles between 50 and 100 microns.
- Medium pumps are used to transport slurries containing droplets between 100 to 500 microns.
- Use heavy and heavy pumps to transport slurries containing particles between 500 and 2000 microns.
- Use heavy and heavy pumps to transport slurries containing particles between 500 and 2000 microns.
Based on this division, the slurry pumps can transfer slurries containing particles from 2 to 8 mm, which do this using strong cylinders.
Some heavy slurry pumps are also able to transfer wells with coarse particles up to 50 mm, which are often used in mineral applications. There are even slurry pumps called dredging pumps, which can easily transfer slurries with solids larger than 50 mm.
Horizontal slurry pumps
Horizontal fluid pumps are one of the best and most basic pumps for wet mineral processing. For this purpose, often used in dry and wet end pumps in places where drives and bearings are stored outside the slurry. These types of pumps should always be kept out of any type of fluid and liquid in the empty enclosure and must be fitted in a jumble and free standing position.
Generally, for flood operation, generally use a special combination of horizontal pumps with wet end and bearings. Of course, for this purpose, important points have to be considered for sealing and sealing arrangements for the bearings required.
The horizontal fluid pump is supported by a special type of shaft that has an anti-friction bearing. The lubrication of bearings is performed using oil or grease. The propeller must always be installed at the bottom of the shaft, and the drive axle is considered using a belt buckle and a flexible connection, which makes it possible to operate with a gearbox or even without a gearbox.
The diameter of the shaft in the axle seal D (mm), the length of the lining or L (mm), that starts from the wet end bearing tolerance to the center line of the impeller, is the main factor of the shaft or SFF’s flexibility factor that call SFF, which is L3 / D4 Is defined. In fact, this is the amount of sensitivity to the deviation, which plays a decisive role in the seal and its useful life. The usual SFF values are generally used for horizontal Slurry pumps 0.2-0.75.
Horizontal Pump types
- Type XM: Pump that is used as an extra heavy pump and has extra metallic parts.
- Type XR :Excessive heavy slurry pump that is covered with strong rubber parts
- Type HM :The pumper is worn for heavy use and using metal parts
- Type HR: Heavy duty pump designed for heavy slurry transfers and covered with rubber parts.
- Type HG :This type of pump is known as a heavy pump
- Type HP :Pump made with high capacity and high pressure
- Type HT :This pump is used for heavy tunneling
- Type MM :Pumper for use in mining and quarrying, made of heavy metal, with metal parts
- Type MR: Pump used for mining and quarrying purposes and heavy pumps with rubber parts coating.
There are currently several types of slurry pumps on the market, which are made using heavy metal or rubber parts and are known as abrasive pumps in the market. Mainly vertical liquid pumps, such as HM and HR pumps, are used for heavy duty purposes, and MR and MM pumps are also used for mining purposes, both of which, according to their structure, have a high tolerance to severe abrasion conditions.
The characteristics of Horizontal Pump types include:
- Extremely long life
- It has a metal or rubber casing that is suited to the type of work with excellent resistance to corrosion and abrasion
- It has reinforced coatings in areas that are more abrasive.
- The use of elastomeric property that strengthens the pump in abrasive conditions
- The ability to change metal or rubber parts and adapt them to different working conditions
- Ability to add some parts and materials for the customer
- According to the customer’s operating conditions, it is possible to choose the exact part for the pump according to the existing standards with high quality and performance, and the most resistant to the abrasion and environmental conditions.
- It is possible to adjust the dual compound to further pump resistance to abrasion conditions
- It is possible to build a dedicated pump for specific applications and purpose
- These types of pumps are a great choice for extraction mining minerals from mines.
- For discharge recirculation tasks, the pump can be equipped with SAG and AG capabilities.
- Can be used inHighly abrasive slurries condition
- Equip the pump to the silicon feed
- Suitable for waste and mining purposes
- Adapting to Industrial Processes
- Applicable for coal and power ash purposes
- Easy to use for pumping sand
- Usability in mines with intense abrasive waste.
- They can easily be used to transfer fluids to different factories
- Applicable to pulp and paper industry
- Use as a limited fertilizer
- Applicable to alumina
- Applicable to fertilizers
- without acidic activity