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       So many of us get caught up tackling many different tasks when it comes to caring for or maintaining our equipment, it can be easy to overlook pumps in any routine maintenance program. If a pump is not maintained or regularly inspected, it can go down without warning or lose efficiency over time, causing downtime and reduced productivity. This can have a major impact on any process’s bottom line and eventually cost more money to solve in the end! One useful way to help your slurry pumps operate more efficiently and effectively is to properly maintain them by doing the following:   Make sure you have a good understanding of how your pump works, and know which components are critical to maintain or keep stock of to prevent extended downtime. Having a thorough knowledge of your pump construction and operation will go a long way toward reliability in service. In doing so you are able to pinpoint when something is awry and replace only necessary parts, rather than the entire pump. Our experts at Zhongjia can tell you what type of pumps are best for your applications’ needs based on your system requirements. Not only that but get you the best spare parts for less! Finding the right solutions with our professional services will help you get started optimizing your pumps so that everything is running smoothly. Additionally, it is crucial to any slurry pumping operation to have regularly scheduled maintenance inspections! Zhongjia can assist with designing a preventative maintenance program to fit your needs. The most important part of this task is to keep detailed records of each inspection so that each time something changes you will know what the problem was last time. Are there any visible signs? If so, take images for your records. Repair it! A great place to start with your regular inspections are regular lubrication and wear on internal pump components as well as power transmission belts. You should be changing out your belts a minimum of once a year, and then more often if that seems to be needed. A great source for replacement parts would be Zhongjia Parts. We have exactly what you need in order to get going again with your pumps. Open the pump and check for wear, maintain a regular greasing schedule, maybe add some extra elbow grease until it runs just right! Efficiency and safety are the names of the game when pumping slurry. You simply cannot have one without the other. Remember that for your next pump job, and to call up Zhongjia Parts for pumps, inspections, advice, and all things slurry!

In this blog, our team share their knowledge on bearings and how critical they are to the successful operation of your centrifugal pump. We answer your top questions, so check out these answers... What are bearings? Bearings are mechanical assemblies that consist of rolling elements, a cage and inner and outer races, which are used for rotating or linear shaft applications. Bearings are a small part of your pumping system, but they play a critical role. This component bears the load of the pump and allows for the rotation. They must be properly lubricated, and the temperatures monitored, to prevent bearing failure. What happens to the bearings while the pump is operating? When your pump is running, the bearings are subjected to high axial loads, marginal lubrication and high operating temperatures and vibration. All the while, these bearings are attempting to minimize friction. What are the different types of bearings? There are a wide range of bearings suitable for centrifugal pumps, with different types chosen depending on the varying service conditions or the end-user’s preference. Depending on the application, there are several different types of bearings, including ball or roller bearings, linear bearings as well as mounted versions that may use either rolling element bearings or plain bearings. Depending on the type of pump you have, there are a number of bearings that may be suitable. Roller bearings use a cylindrical shape roller between the moving parts to reduce the friction and support the radial and axial load. Ball bearings use balls to support the movement of parts, although simple in design they are suitable for high speeds and are easy to maintain. Babbitt bearings are a type of sleeve bearing that is coated in babbit metal - and are commonly used in motors, pumps, turbine generators and fans. Sleeve bearings are suitable for high speeds. These bearings are ideal for radial loads only and are designed to float. Pivot shoe bearings, also known as Tilt Shoe Bearings or Kingsbury Bearings, are suitable for axial load and are installed in high powered centrifugal pumps as a thrust bearing. Angular contact bearings have inner and outer ring raceways which are displaced relative to each other in the direction of the bearing axis. These bearings are designed to accommodate loads.

      Slurry pumps are a core component of a mine sites processes; if they aren’t running smoothly it can cause massive downtime and loss of production. To ensure they function optimally and reliably, it is crucial that sites implement frequent preventative maintenance schedules. As some site operators may not be familiar with what exactly preventative maintenance measures slurry pumps require, Zhongjia Pumps have shared their knowledge! Discover the recommended monthly, quarterly and half-yearly maintenance measures, as well as downtime requirements suggested by Zhongjia team of slurry pumping experts! Monthly checkups for slurry pumps  Zhongjia Pumps recommend that the pump’s performance (head and flow) is verified monthly against the original or start-up duty point, as this will indicate the condition of the wearing parts. Our specialized Mining team also suggest the following elements be checked monthly: Sealing system As with all pump wearing parts, the components of the sealing system will require periodic checks to avoid inefficient pump performance. The frequency of this would depend on the application or the sealing system. However, a tell-tale sign is the amount of gland water leakage (for expeller and gland-packed pumps). Zhongjia Pumps suggest replacing the gland packing when other main wearing parts are changed - to avoid any further downtime. Impeller Adjustment This can be adjusted forwards and backwards in the pump’s casing to compensate for part wear in abrasive applications. In order to ensure maximum efficiency and part life, the impeller should be adjusted frequently. Specific instructions are generally listed in the IOM provided by the manufacturer.   Periodically, wearing parts (impellers and liners) will need changing as their wearing condition will affect the performance of the pump. Changing these parts is generally the inverse of the assembling of the pump. It is crucial that you do not apply heat to the impeller hub or inlet eye, as the application of heat may result in the impeller shattering, injury or equipment damage. It is also important to note that wearing parts may have extremely sharp areas due to the wear and tear they endure.

Common faults of slurry pumps: (1) The pump does not rotate; (2) The pump flow is insufficient; (3) Leakage of filler; (4)The pump vibrates and has noise; (5) Bearing heating; (6) Short bearing life. Actions:(1) If the solid and hard sediment in the vortex shell is silted, measures can be taken to remove the silt. (2) If the impeller or inlet and outlet pipeline is blocked, the impeller or pipeline can be cleaned. If the impeller is seriously worn, it should be replaced. If the filler mouth leaks, the filler should be pressed. The conveying height is too high, the loss resistance in the pipe is too large, and the conveying height is reduced or the resistance is reduced. (3) If the shaft and the feeding box are different from the shaft, the main reason is large processing error and incorrect installation. Care should be taken to check that the installation is correct after installation. If the sealing water ring is seriously worn, a new water ring needs to be replaced. If the sealed clean water pipe is blocked, the sealed water cannot enter the middle of the packing, resulting in rapid packing wear, resulting in material leakage. The blocked water pipe should be unclogged to keep the sealed water clean.  

Under the action of centrifugal force, the liquid is thrown from the center of the impeller to the outer edge and obtains energy, leaving the outer edge of the impeller at high speed and entering the spiral pump housing. In the spiral pump housing, the liquid slows down due to the gradual expansion of the flow channel, and part of the kinetic energy is transformed into static pressure energy, and finally the higher pressure flows into the discharge pipe and is sent to the required place. When the liquid flows from the center of the impeller to the outer edge, a certain vacuum is formed in the center of the impeller. Because the pressure above the liquid surface of the storage tank is greater than the pressure at the pump entrance, the liquid is continuously pressed into the impeller

There are a few components that virtually every centrifugal pump has in common. These components include: An impeller A volute or diffuser style casing A shaft Shaft sleeves Bearings A sealing arrangement These parts can be subdivided into the wet end and the mechanical end. The wet end of the pump includes those parts that dictate the hydraulic performance of pump. The mechanical end includes those parts that support the impeller within the casing, seal the casing where the shaft passes through it and enable rotation – the means by which the wet end creates flow and pressure. Wet End We`ve already talked about the two primary parts of a pump: the casing and impeller. So we won`t spend much time on those here. The short explanation is that the impeller rotates at a high speed and imparts velocity to the water. The impeller is positioned within the casing, and the casing converts the velocity generated by the rotation of the impeller into pressure. For a more detailed look at this process take a look at the article on this topic. Mechanical End The mechanical portion of the pump includes the pump shaft, shaft sleeve, sealing arrangement, and the bearings.

Kuniko believes it has discovered a high-grade Middagshvile diamond mine at its Skuterud project in Norway. The main drilling results are: 6.2 meters at a depth of 25 meters, drilling grade 0.43%, including 3 meters thick, drilling grade 0.52%, and 1 meter thick, drilling grade 1.08%. The analysis results of the ore belt samples in the deeper buried target area confirmed that the drilling mineralization was continuous. One of the holes showed 2.1 meters of ore at a depth of 23 meters, with a drill grade of 0.21%; 5 meters of ore at a depth of 135 meters, with a drill grade of 0.04% and copper 0.15%; 2.1 meters of ore at a depth of 201 meters, with a drill grade of 0.08%. There may be localized high grade mineralization. In the 18th and 19th centuries, Skutrood was the largest diamond producing region in the world

According to Mining.com to Reuters, the New Zealand government announced on Friday (5) that it will assess the risks and benefits of seabed mining, and whether there should be domestic regulation. Environment Minister David Parker said there was a clear set of views on seabed mining and a review would help New Zealand have a say on the issue. Parker said in a statement that "attention should be paid to the environmental impact of seabed mining and its potential role in New Zealand's transition to a decarbonized economy." Seabed mining is permitted in New Zealand, but must be approved by the Environmental Protection Agency. Although the EPA has received three applications for the project, it has not given a clear response to any of them. Debate is growing over whether nickel and other green energy transition metals should be mined under the ocean floor. In October, New Zealand backed a conditional moratorium on seabed mining in areas beyond national jurisdiction. "New Zealand's international standing does not require the government to change its position on seabed mining," Parker said. But now that there is support for a conditional moratorium on seabed mining, this requires an examination of our own regulatory system as soon as possible."

According to the BNAmericas website, Argentina's left-wing parliamentary group submitted a bill to the lower house of parliament calling for the declaration of the hammer as a strategic mineral, the amendment of the mining law and the mining Investment law. Foreign companies easily control potash resources. Instead of industrializing the carp in China, they plundered the carp resources and left behind pollution. We have lost platinum, "said Juan Carlos Alderete, leader of the local media movement Corriente Clasista y Combativa. The bill is being pushed by the ruling Frente de Todos (Popular Front) party, following the example of Spain and Chile. Recently, Chile has proposed a carp strategy that mainly involves state ownership. The Act applies retroactive principles and will affect mining rights granted before the Act's enactment, but only after the one-year implementation period. Natural resources are a matter of national sovereignty, territorial integrity and economic independence. Argentina is the world's leading producer of potassium, accounting for more than 20% of global resources.

According to BNAmericas, private upstream companies already account for 12.7% of Proven and Probable reserves in Mexico. According to data from the Mexican Petroleum Administration (CNH), the share of private companies in the country's oil reserves increased significantly at the end of last year, with Fieldwood Energy (4.7%), Hokchi (1.2%) and DWF (1.0%) leading the way. New fields increased as a percentage of the country's 2P reserves, with Pemex's xachi (8% of total reserves) leading the way, followed by the company's Ayatsil (7%) and Quesqui (4%). In terms of reserves, the largest field discovered by private companies is lchakil (4%), followed by Zama (3%). CNH data show that Mexico has begun to reverse the trend of declining reserves. The country's combined 3P reserves, or proven, estimated and estimated (Possilbe) reserves, increased by 5% in the first quarter of 2023, The reason is the growth of reserves in Zama, Tupilco Profundo, Yaxche and lchalkil, said Hector Morelra Rodriguez, CNH commissioner. The impact of rising oil prices on the growth of reserves in one-nation countries is relatively delayed, because the growth of reserves depends on investment by companies in exploration. With more planned exploration activities to be carried out in the coming months, overall reserves are expected to grow in 2023 and 2024, CNH also approved Pemex subsidiary PEP's onshore well in Escuintle, Tabasco state, at a recent thematic meeting, the company said. It will invest $44 million to drill for 100 days and start drilling in late May.

Kazakhstan's State Atomic Energy Industry Corporation (Kazatomprom) recently announced that its subsidiary Ulba metallurgical Plant has been awarded an exploration license for the rare Upper lrgiz gold deposit in the Aktobe region, Urba Metallurgical Plant, one of the world's leading producers of uranium, metals and products that meet the needs of nuclear power, electronics, metallurgy and other industries, plans to explore the deposit to assess and confirm the reserves and resources of rare metals. The project will enable the company to provide its own mineral resource base for existing production, reducing the cost of the final product, improving economic efficiency and creating new jobs. The company pointed out that it has a certain level of experience in the development of rare metals, and has the modern technology to extract high-purity rare and rare earth metals. According to previous studies, the Upper lrgiz rare gold deposit is mainly composed of ore, ore bodies occurring in pre-Cambrian gneiss, amphibolite and quartsite with a length of about 20 to 1,000 meters. The thickness is 0.1~10 meters, the main ore types are alkaline feldspar metasomatic rock type and ore bearing weathering crust type after weathering of primary ore. The ore minerals are mainly silver and iron ore, and the average grade of Nb205 is 0.03% and Ta205 is 0.1%. The deposit is located in a special near fault metasomatic rock type.

Mamba Exploration has observed widespread, shallow clay-type rare earth deposits in the 2Kmx1Km eastern anomaly at the Hvden project in Western Australia. The sampling analysis showed that the ore was found 32 m at a depth of 16 m with a total rare earth oxide (TREO) grade of 0.149%, including mineralisation 12 m thick with a TREO grade of 0.1899%, and the ore body was penetrated both to the south and north Of the 58 boreholes that have been completed, 45 have seen a grade higher than 0.05%, and 26 have not penetrated the ore body. The proportion of rare earth elements is 23% on average The first drilling results show widespread mineralization, and preliminary leaching tests have begun with good eye continuity.

According to Mining.com, Seabridge Gold is drilling for a new discovery at the lskut porphyry copper and gold mine in the Golden Horseshoe region of Brebia province, just 20 kilometers from the company's large KSM copper and gold project. Initial work will extend from the Snip North precinct to Bronson Slope. Three helicopter-borne drilling RIGS arrived at the site, and two more will arrive in the coming weeks. The drill will deploy 12-15 diamond holes with a total depth of at least 12,000 meters. The company said regional geophysical surveys and surface geology confirmed the existence of a regional structure that runs through three targets: Quat Rise, Snapple North and Bronson Throp. All the discovered deposits in Iskut are considered to be a copper-gold porphyry system structurally distributed along this area. This tectonic belt is similar to the porphyry deposit group delineated by Haiqiao Company in KSM project. "We are very pleased to be launching the project early in the field season following the success of Iskut last year," said Rudi Fronk, CEO and President of Seabridge, in a press release. "At Snapple North, there is strong evidence from previous drilling and deep geophysical exploration of copper-gold mineralization. As the summer melts, we will follow the regional structure up the slope and continue our work below the Bronson Slop target. "Our team is confident of finding new high-grade copper-gold porphyry deposits at both targets. In addition, we see a lot of potential for additional resources at Bronson Throp right now, "he added. The 22,238-acre Iskut concession, 110km east of Stuart between the Iskut River and the Pacific Coast, was acquired by Seabbridge Gold in 2016 in a deal to buy all of SnipGold's shares. Last year, the company drilled in the Bronson Throp area and found that the ore was 446.2 meters thick, 0.28 grams/ton of gold and 0.34% copper; Thickness 188.5 meters, gold 0.70 g/ton, copper 0.29%? Thickness 286.3 meters, gold 0.52 g/ton, copper 0.24%; It is 341.6 m thick with 0.43 g/t go

Kuniko believes it has discovered a high-grade Middagshvile diamond mine at its Skuterud project in Norway. The main drilling results are: 6.2 meters at a depth of 25 meters, drilling grade 0.43%, including 3 meters thick, drilling grade 0.52%, and 1 meter thick, drilling grade 1.08%. The analysis results of the ore belt samples in the deeper buried target area confirmed that the drilling mineralization was continuous. One of the holes showed 2.1 meters of ore at a depth of 23 meters, with a drill grade of 0.21%; 5 meters of ore at a depth of 135 meters, with a drill grade of 0.04% and copper 0.15%; 2.1 meters of ore at a depth of 201 meters, with a drill grade of 0.08%. There may be localized high grade mineralization. In the 18th and 19th centuries, Skutrood was the largest diamond producing region in the world

The so-called slurry pump is a kind of centrifugal pump with high efficiency and relatively strong performance, which has evolved in recent years due to the large particles of material transportation, and is currently one of the indispensable equipment in each process of coal preparation plant. Working principle of slurry pump The slurry pump belongs to a kind of centrifugal pump from the physical principle, and conceptually refers to a mechanical device that increases the energy of the solid and liquid mixed medium by means of centrifugal force (rotation of the impeller of the pump), and converts electrical energy into the kinetic energy and potential energy of the medium. The name of the slurry pump is a centrifugal pump divided from the point of view of the conveying medium. First of all, the relationship between the centrifugal pump and the slurry pump is described, and then the principle of the slurry pump is naturally clear. The centrifugal concept is derived from the pump. There are many kinds of pumps, which can be divided into dozens of categories according to different angles. Centrifugal pump is divided from the working principle of the pump, which is the process of pressurizing the conveying medium through the effect of centrifugal force. In addition, there are common types including the screw principle, the plunger principle, etc., can be divided into pumps different from the centrifugal principle. After saying the concept of centrifugal pump, say slurry pump, slurry pump is from another Angle to divide the pump, that is, from the transport medium to divide. As the name suggests, the slurry pump delivers a mixture of solid particles containing slag and water. But in principle, the slurry pump belongs to a centrifugal pump. So these two concepts are clear. The main working parts of the centrifugal pump are the impeller and the casing, and the impeller device in the casing is located on the shaft and connected with the prime mover to form a whole. When the prime mover drives the impeller to rotate, the blade in the impeller forces the fluid to rotate, that is, the blade does work on the fluid along its direction of movement, thus forcing the pressure potential energy and kinetic energy of the fluid to increase. At the same time, under the action of inertial force, the fluid flows from the middle to the edge of the impeller, and flows out of the impeller at a very high speed, into the extrusion chamber, and then discharged through the diffusion tube, this process is called the pressure water process. At the same time, because the fluid in the middle of the impeller flows to the edge, a low pressure area is formed in the middle of the impeller, when it has enough vacuum, under the action of the suction end pressure (generally atmospheric pressure), the fluid enters the impeller through the suction chamber, this process is called the water absorption process. Due to the continuous rotation of the impeller, the fluid is continuously discharged and inhaled, forming continuous work. The working process of centrifugal pumps (including slurry pumps) is actually a process of energy transfer and transformation. It transfers the mechanical energy of the motor rotating at high speed through the blade of the pump and converts it into the pressure energy and kinetic energy of the pumped fluid.

ZJ slurry pump is usually used in mining, metallurgy, coal chemical industry and other fields of mine tail treatment, beneficiation, tailings treatment and ash treatment and other work occasions. Therefore, the working environment of these occasions is generally harsh, and the operation of the slurry pump also puts forward high requirements. ZJ slurry pumps are suitable for the following environments: High temperature environment: ZJ slurry pump can operate normally in high temperature environment, and its heat resistance can reach 70℃-100℃. Therefore, it is suitable for high temperature operation in industrial fields such as coal chemical industry. Low temperature environment: ZJ slurry pump can work in a low temperature environment, the minimum working temperature can reach -35℃, therefore, it is suitable for mines and concentrators in the northern winter. High altitude environment: ZJ slurry pump can work normally in high altitude environment of 4000 meters above sea level. Humid environment: ZJ slurry pump can work in humid environment, its protection level up to IP68. Corrosive environment: ZJ slurry pumps can operate in environments with corrosive liquids. To sum up, ZJ slurry pump is widely used in harsh working environment, therefore, in the selection of slurry pump, should be based on the working environment and working requirements, choose the appropriate model and configuration, to ensure its normal operation and efficient production.

The global mining industry, like the world economy, also presents obvious cyclical characteristics. However, the two are not synchronized, affected by economic fluctuations, global mineral development investment and market price changes have a certain lag. In 2022, affected by factors such as the world economic downturn, rising inflation, the repeated COVID-19 epidemic, geopolitical deterioration and resource nationalism, the international mineral products market has been violently volatile, and most mineral prices have risen and then fallen, which is similar to the situation in 2012 when the global mining industry reached its peak stage. In order to ensure the needs of the development of strategic industries such as electric vehicles, Western countries use subsidies and other policies to promote the exploration and development of domestic mineral resources, while establishing international mineral resource security partnerships, and prohibit foreign state-owned enterprises to participate in the development of key minerals in their own countries, but different countries and different regions have different policy orientations, and the market is uneven. In 2023, the global mining industry faces challenges from the world economic downturn, geopolitical and ESG(environmental,Social and Governance) risks. In this paper, the global mining situation in 2022 is reviewed from five aspects: world economy, mineral exploration and development, mineral product supply and demand, mining company operation and the laws and policies of important mineral resources countries, and the global mining situation in 2023 is briefly analyzed. The understanding and conclusions are for reference only.

It is revealed that Zijin Mining owns the project Vuritica Gold Mine in the city of Vuritica, Colombia, which is a world-class high-grade gold mine and known as a world-class "pearl" in the global gold pattern. According to Zijin's 2022 annual report, the company has a 69.28 per cent stake in the Vuritica gold mine. The gold resources of the Vuritica gold deposit are 322 tons with an average grade of 6.61 g/t. The mine will produce 7.7 tons of annuities in 2022 and 8.2 tons of gold in 2023. On March 5, 2020, Zijin Mining announced the completion of 100% equity delivery of the merger and acquisition of Continental Gold, whose core asset is the gold mine in Uritica, Colombia. At the time, it took Zijin "world-class speed" to complete the delivery of the Vuritica mine in just three months. According to the disclosure of Zijin Mining, as a world-class high-grade large-scale gold mine, the Wulitika gold mine has good mining conditions, and has a good prospect in the deep and peripheral ore body prospecting, and has great potential to explore and increase reserves. The ultra-high grade of the gold mine in the world is very rare. Data show that the average grade of the global primary gold ore is only 1.19 g/ton, and the average grade of the gold mine in the world is much higher than this. On June 30, 2021, Ivan Duque, then President of Colombia, said that the Vuritica gold mine built by Zijin Mining is Colombia's first ecologically green, environmentally friendly and socially beneficial modern mine. The project is of great significance to Colombia's mining and economic development and has become a world-class "pearl" in the global gold landscape.

The material of slurry pump accessories mainly includes stainless steel, natural rubber, high chromium cast iron material. 1. The slurry pump made of stainless steel is characterized by cheap price, suitable for working conditions that do not require high pump quality, and the cost performance is also quite high for low-cost investment. 2.Natural rubber slurry pump, its main feature is strong corrosion resistance, for some working conditions need to transport the slurry is corrosive, ordinary stainless steel slurry pump seriously shortens the service life, so at this time to choose corrosion resistant slurry pump, pure natural rubber lining is an excellent material for corrosion resistance. 3. High chromium cast iron slurry pump, its characteristics is more wear-resistant, for some working conditions are bad, such as: slurry body has stones, sharp and angular hard particles, etc., at this time to use high chromium alloy material slurry pump accessories, wear-resistant slurry pump accessories relative to stainless steel, longer service life, lower maintenance costs, greatly increase the life cycle of the slurry pump.

Slurry pump is used to transport the slurry containing particulate matter, particulate matter will wear on our pump, so what are the wearing parts? There is a noun called flow parts in slurry pump accessories, which means the accessories that contact the slurry directly, or the accessories that the slurry contacts in the pump chamber.The flow parts include impeller, sheath and guard plate.In addition to the flow parts are relatively easy to wear, in the shaft sealing part, there are also small parts that need to be maintained and replaced by the manager.