fuyangby@126.com
86 15188770013
fuyangby@126.com
86 15188770013
Application scenarios of slurry pumps in coal washing plants
The slurry pump has a wide range of applications in coal washing plants and is one of the indispensable equipment in the coal washing production process. Its specific application scenarios are as follows:
Medium transportation: The medium suspension in the mixing drum that meets the specified density is pumped into the shallow tank heavy medium sorting machine for the sorting of raw coal for washing; Draw the suspension of the dilute medium in the dilute medium tank to the magnetic separator for magnetic separation, and recover the concentrate (medium) after magnetic separation to the blending tank.
Coal slurry water and coal slurry treatment: the coal slurry water in the coal slurry bucket is pumped into the coal slurry concentration cyclone for sorting; Pump the high concentration coal slurry water concentrated in the concentration tank into the coal slurry mixing tank of the water washing system; Pump the high concentration coal slurry water from the coal slurry mixing tank into the filter press to achieve separation of coal slurry and water; Retrieve the filtered liquid processed by the filter press into the filtrate tank and pump it into the concentration tank.
Circulating water utilization: The clarified clean water in the concentration tank is pumped to the water washing system for use in the desliming water spray of the desliming screen and system replenishment.
Site waterlogging treatment: pumping the accumulated water on the ground into a dilute medium bucket.
Factors influencing efficient application
Equipment performance itself
Hydraulic efficiency: A slurry pump designed using advanced solid-liquid two-phase flow theory, with flow components that conform to the flow state of the medium, can reduce local and longitudinal hydraulic losses such as eddies and impacts, and improve hydraulic efficiency, such as the ZJA series slurry pump.
Material wear resistance and corrosion resistance: The overcurrent components are made of high hardness alloy cast iron and other materials with high wear resistance, corrosion resistance, and impact resistance, which can improve the service life of the pump, reduce the frequency of failures and replacements caused by component wear, and ensure the continuous and efficient operation of the equipment.
condition
Medium characteristics: Excessive content of coarse particles in the medium can easily cause blockage of the pump body, impeller flow, and accumulation of material inside the pump body, affecting the operating efficiency of the pump and even leading to shutdown; Uneven medium density may cause unstable pump operation, resulting in shaking and vibration, and reduce operating efficiency.
Equipment installation: Improper installation of the pump, loose anchor bolts, etc. can cause the pump to run unevenly, affect efficiency, and even damage the equipment; Improper installation of connection parts may result in dripping of liquid raw materials, causing waste and damaging the on-site environment.
Maintenance
Regular inspection and maintenance: Regularly inspecting and maintaining the slurry pump can timely detect and solve potential problems, such as pump bearing wear, decreased sealing performance, etc., effectively reducing the occurrence of faults and ensuring that the equipment is in good operating condition.
Timely replacement of accessories: Timely replacement of aging or damaged accessories, such as pulleys, corner belts, packing, sealing O-rings, etc., can avoid pump failure caused by accessory problems, such as pump failure to load and sealing water entering the pump body, and maintain the normal operation of the pump.
Measures to achieve efficient application
Equipment selection and configuration
Reasonable selection: Based on the specific production needs of the coal washing plant, such as the characteristics of the conveying medium (density, particle size, corrosiveness, etc.), flow rate, head and other parameters, select the appropriate model of slurry pump to ensure that the pump's performance matches the actual operating conditions.
Multi stage series application: For some situations that require high head transportation, slurry pumps can be used in a multi-stage series manner to meet production requirements.
Optimize operating conditions
Optimize the medium: minimize the content of coarse particles in the mud as much as possible, and optimize the medium through pretreatment and other methods to reduce the risk of pump blockage; Before driving, blow the medium evenly with high-pressure air to avoid uneven pump operation caused by uneven medium density.
Standardized installation: Ensure the installation level of the pump, tighten the anchor bolts, and pad the wedge iron for leveling; Pay attention to the installation quality of the connection parts, prevent liquid leakage, and ensure that the equipment installation meets the requirements.
Strengthen maintenance and management
Regular maintenance plan: Develop a detailed regular inspection and maintenance plan, conduct a comprehensive inspection of all components of the pump, including bearings, shaft seals, impellers, seals, etc., and promptly identify and address issues such as wear and damage.
Accessory management: Establish an accessory inventory management system to ensure timely replacement of aging or damaged accessories; Choose reliable accessories to ensure the quality of equipment maintenance.
Operation status monitoring: Real time monitoring of the pump's operation status, such as flow rate, head, pressure, temperature, vibration and other parameters, timely detection of abnormal situations and taking corresponding measures to ensure the safe and efficient operation of the equipment.
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