Shijiazhuang Minerals Equipment Co. Ltd
About Us

Shijiazhuang Minerals Equipment Co. Ltd

Shijiazhuang Minerals Equipment Co., Ltd. is a professional slurry pump supplier in China. We are engaged in heavy duty and severe duty pumps.Being manufactured at the highest standards, our pumps can guarantee long life, high performance, easy operation and maintenance. They are widely used in mining, mineral processing, tailings disposal, dredging, construction, metallurgy, power plants, sewage water treatment, as well as chemical and petroleum industry.With decades of development, we have ...
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China Shijiazhuang Minerals Equipment Co. Ltd

2010

Year Established

2,5000,000 +

Annual Sales

150 +

Employees

news
Slurry Pump about selection
2023-02-15
When purchasing a slurry pump, the Slurry Pump Supplier will learn from the customer about the operating environment of the pump and the slurry pumped, etc., so as to recommend the most suitable pump type to the customer to ensure The pump can last longer in its post. This is what we often call slurry pump selection. The following will introduce you to what aspects are related to the choice of slurry pump: 1. First determine which slurry pump to choose according to the working conditions The working conditions mentioned here are understood as application industries, such as mineral processing, coal processing, sand pumping, etc. (This step is very important, and it is also a prerequisite for selection) 2. Flow and head are the two most basic parameters for pump selection: a: Preliminarily determine the general situation of the pump through the working conditions, such as which series model or whether to consider the material, etc. b: After determining the series model of the pump, read the performance curve through the flow and head to determine the specific model and size of the pump. c: Read the curve, calculate the power: The parameters that must be known in the calculation of the shaft power of the pump include flow rate, head, efficiency, and slurry specific gravity; efficiency (η) is determined by the flow rate and head, which can be read out by reading the performance curve; What cannot be provided is only through experience points. Generally (between 1-2), an estimated value will be given to calculate the power during technical calculation. d: Calculated shaft power P=m*g*h/η Its derivation formula: P=ρ*Q*H/102η (pay attention to the use of safety factor in the actual calculation) e: motor power, the motor power which is the nearest and larger than the shaft power is taken as the final motor power by the shaft power. More parameters: working condition flow head. Slag specific gravity. The specific gravity of solids. concentration. Ph temperature. According to the basic process of A, except that in step C, the specific gravity parameter of the slurry is directly provided by the customer, or the specific gravity of the slurry is calculated by the specific gravity and concentration of the solid. The weight concentration generally mainly considers the degree of abrasiveness of the slurry. For a certain kind of slurry, the higher the concentration, the higher the abrasiveness will be, and the higher the specific gravity of the slurry. Therefore, we have the concept of Heavy-Duty Slurry Pumps, neutral, and light-duty slurry pumps, which is based on the content of the slurry. There is no strict limit. Ph value is one of the material factors that we judge to select the overcurrent parts of the pump (generally, the pH value of 5-12 considers the range of metal overcurrent parts, and the rest of the range considers rubber or other special materials. Here is also the theoretical numerical range that cannot be dead. set, to be flexibly applied); Temperature is also one of the factors to determine whether the material can be used. Generally, the temperature is a factor that is rarely considered in most cases, but sometimes there are special conditions that require temperature. 3. Detailed parameters Working conditions, flow, lift the specific gravity of the slurry, specific gravity of solids, the concentration of pH, temperature, D50, D80, pipeline (pipeline, elbow, valve, taper (contraction, expansion), viscosity, etc. It is still the basic process according to the first, but in this kind of detailed parameters, it is generally the bidding project, or the client is very special so that so many detailed parameters can be provided. In general, the parameters that can be provided to the two are already detailed. For some large projects and large bids, special design units or departments will provide customers with detailed data, so it is possible to provide three levels of detail. In fact, this detailed parameter is mainly to increase the parameters of the pipeline, and the pipeline is the parameter of calculation (dynamic lift). Generally, many customers cannot provide detailed pipeline conditions, or the pipeline is simple, so they are ignored and directly provide a The head is only the head, so we don’t need to forget it, but once the detailed pipeline is provided, we need to calculate the dynamic head by ourselves. The specific calculation of the dynamic head is relatively complicated, but there are ready-made formulas to apply. For slurry pump selection, please contact CNSME – a Slurry Pump Manufacturer from China. welcome letter sales@cnsmepump.com !
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Latest company news about Slurry Pump about selection
About Sand Dredge Slurry Pumps
2022-07-29
We offer a wide range of Sand Dredge Slurry Pumps that can be used to pump sand. A mixture of sand and water with up to 70% solids by weight is pumped. Sand and gravel are handled by pumping a mixture of liquid and particles of sand and gravel. A sand pump can be used for a variety of tasks, including sand and gravel extraction, river dredging, harbor and marine construction, beach reclamation, and filling Geotubes. Sand pumps have multiple applications, which you can read about below. Sand and Gravel Mining One of the most popular methods of sand and gravel extraction is by dredging the river beds or the seabed. Sand is in great demand because it is used in concrete construction and for hydraulic fracturing (fracking) in oil or gas extraction. Our sand pumps are very successful in these applications. Harbor Maintenance Frequently, the seabed of harbors and marinas is raised due to sea currents and sedimentation in upstream effluents, making boat access difficult. Our sand pumps as well as our remote-controlled minidredges and cable dredges are convenient for harbor cleaning. We offer a wide range of dredging pumps and accessories, you can find descriptions in our product section. In our section Slurry Pump Basics, you can learn more about sand pumps. We can help you to choose the size of sand pump that best adapts to your requirements. We have a wide selection of Sand Dredge Slurry Pumps. We can provide sand pumps alone, packages that could be installed on existing dredges, and complete pumping solutions like remote-controlled dredges and cable dredges.
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Latest company news about About Sand Dredge Slurry Pumps
Common Faults & Solutions of Slurry Pumps
2021-11-24
During operation, there are four types of common failures of slurry pumps: corrosion and abrasion, mechanical failure, performance failure and shaft sealing failure. These four types of failures often affect each other. For example, the corrosion and abrasion of the impeller will cause performance failure and mechanical failure, and the damage of the shaft seal will also cause performance failure and mechanical failure. 1. Bearings Overheated A. Too much, too little or deterioration of lubricating grease/oil will cause the bearing to heat up, and the appropriate amount and quality of oil should be adjusted. B. Check whether the pump -motor unit is concentric, adjust the pump and aglign it with the motor. C. If the vibration is abnormal, check whether the rotor is balanced. 2. Reasons and solutions that may causenon output of slurry A. There is still air in the suction pipe or pump, which should be filled with liquid to discharge the air. B. The valves on the inlet and outlet pipeline are closed or the blind plate is not removed, then the valve should be opened and the blind plate removed. C. The actual head is higher than the maximum head of the pump, a pump with higher head should be employed D. The rotation direction of the impeller is wrong, so the rotation direction of the motor should be corrected. E. The lifting height is too high, which should be lowered, and the pressure at the inlet should be increased. F. The debris is blocked the pipe or the suction pipeline is small, the blockage should be removed and the pipe diameter should be enlarged. G. The speed does not match, which should be adjusted to meet the requirements. 3. Reasons and solutions for insufficient flow and head A. The impeller is damaged, replace it with a new impeller. B. Too much damage to the sealing ring, replace the sealing ring. C. The inlet and outlet valves are not fully opened, they should be fully opened. D. The density of the medium does not meet the requirements of the pump, re-calculate it. 4. Reasons for serious seal leakage and solutions A. Improper selection of sealing element materials, replace suitable elements. B. Serious wear, replace the worn parts and adjust the spring pressure. C. If the O-ring is damaged, replace the O-ring. 5. Reasons and solutions of motor overload A. The pump and engine (output end of the motor or diesel engine) are not aligned, adjust the position so that the two are aligned. B. The relative density of the medium becomes larger, change the operating conditions or replace the motor with suitable power. C. Friction occurs in the rotating part, repair the friction part. D. The resistance (such as pipeline friction loss) of the device is low, and the flow will become bigger than required. The drain valve should be closed to obtain the flow rate specified on the pump label.
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Latest company news about Common Faults & Solutions of Slurry Pumps
How to choose the right shaft seals for your slurry pumps
2021-08-11
Pump Knowledge -- Commonly used shaft seal types of slurry pumps In the classification of pumps, according to their slurry delivery conditions, we refer to pumps suitable for transporting liquids (mediums) containing suspended solids as slurry pumps. At present, the slurry pump is one of the indispensable equipment in various technological processes such as ore beneficiation, coal preparation, desulfurization, and filter press feeding. As people pay more attention to environmental protection, the sealing of slurry pumps is also being paid more and more attention. There are three main types of shaft seals for slurry pumps: packing seal, expeller seal, and mechanical seal. These three types of shaft seals have their own advantages, which are introduced as follows: Packing Seal: The packing seal of the slurry pump relies on the soft and hard running-in between the packing and the shaft sleeve to achieve the sealing effect. The packing seal needs to add shaft seal water, the pressure of which must exceed the slurry pump discharge pressure. This sealing method is easy for Replacement and is widely used in ore dressing plants and coal washing plants. Expeller Seal: The expeller seal of the slurry pump relies on the pressure generated by the expeller to achieve the sealing effect. This sealing method is employed when the user is short of water resources. Mechanical Seal: The mechanical seal relies on the close contact between the rotary ring and the static ring in the axial direction to achieve the sealing purpose. The mechanical seal can prevent water from leaking and is especially popular in major domestic concentrators and power plants. However, it is necessary to protect the friction surface to avoid abrasion during installation. Mechanical seals are generally divided into single mechanical seals and double mechanical seals. At this stage, we recommend the single mechanical seal with flushing water inmineral separation plants. This type of mechanical seal has been widely used. Although mechanical seals without flushing water are also recommended by mechanical seal manufacturers, they are not ideal in field applications. In addition to the above three commonly used shaft seals, there is also a shaft seal, which is called "L"-shaped shaft seal in this industry. This kind of shaft seal is generally used in large or huge slurry pumps, but is rarely used in small and medium-sized slurry pumps. Therefore, in the selection of the slurry pumps, not only the pump performance specifications must be considered, but the selection of the shaft seal is also very critical. Selecting the suitable shaft seal for slurry pumps, based on the characteristics of the transported medium at site and the working conditions, will extend the reliable operation time of the pump and reduce the down time caused by the replacement of shaft seal. In this way, not only the total ownership cost is very much reduced, but also the working efficiency is greatly improved.  
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Latest company news about How to choose the right shaft seals for your slurry pumps
What Did They Say
Mr. Kheng
Mr. Kheng
Your Pumps are able to meet our customer's specificatios after performance test, and your price quoted is always competitive to us.
Your Pumps are able to meet our customer's specificatios after performance test, and your price quoted is always competitive to us.
Mr. Maksimov
Mr. Maksimov
I think we are very luck, because problems on the quality of the material and the pump have never occurred.
I think we are very luck, because problems on the quality of the material and the pump have never occurred.
Mr. Olivier
Mr. Olivier
I've been buying spare parts from SME and my clients have installed these parts in their production and are very happy with the quality and durability
I've been buying spare parts from SME and my clients have installed these parts in their production and are very happy with the quality and durability
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