Service Support

Service Support

Always adhere to providing customers with professional technical solutions and high-quality service experiences

What type of pump is recommended for open-pit mines in Africa?

Key pain points of open-pit mines in Africa: unreliable grid power, frequent outages, severe water inflow during the rainy season, high silt content in mine water, extreme heat and intense sun exposure, a shortage of maintenance personnel, and challenging remote transportation. For all these conditions, trailer‑mounted diesel‑powered pump sets are the preferred choice. Below, we provide precise recommendations tailored to specific operating conditions—these are the most widely used models for African mining operations.

2026-05-14

What factors affect the efficiency of a double-suction, center-open pump?

The operational efficiency of a double-suction, center-open pump is primarily influenced by six key factors, as follows: Hydraulic losses (the most significant contributor, accounting for 70% of efficiency decline): These arise from deviations from the design operating conditions, fouling and blockage in the impeller passages, suboptimal inlet flow geometry, and impeller wear and cavitation, all of which lead to frictional, impact, and eddy losses in the water flow.

2026-04-22

The medium contains particles—how do you select the appropriate pump?

When the process fluid contains solid particles, there are three key considerations when selecting a pump—simple, practical, and perfectly suited to applications in mining and other environments with particle-laden media: First, prioritize pumps made from wear-resistant materials. Pay particular attention to the wet-end components and impeller, which are the most vulnerable parts. For example, the ZGSiMnMo high-wear-resistance alloy used in MD-type mining pumps, or high-chromium alloys such as Cr26 and Cr27, are excellent choices because they can effectively withstand particle erosion, preventing rapid wear and leakage that often plagues conventional cast-iron pumps. If the solids content is relatively low, wear-resistant ductile iron is also a cost-effective option.

2026-04-08

Why do MD-type mining pumps have a long service life?

Anyone who works with mining equipment knows that mine pumps tend to wear out quickly. However, MD-type mine pumps deliver long-term, stable operation and a significantly longer service life—thanks to their robust engineering. The key factor is the exceptional wear resistance of the materials used. The wet-end components and impellers of MD-type mine pumps are all manufactured from ZGSiMnMo, a high-wear-resistant alloy with exceptionally high hardness, which easily withstands the abrasive erosion caused by solid particles in mine water. Unlike conventional pumps made from ordinary cast iron, which rapidly wear out and leak after only a short period of operation, MD-type pumps can run continuously for thousands of hours even in mine water containing significant impurities without any issues.

2026-04-08

What is the maximum head of a horizontal multistage pump?

First, it’s important to understand that the key to a horizontal multistage pump’s ability to achieve high head lies in “multistage series connection”—in simple terms, the pump casing houses multiple impellers, each of which boosts the water pressure. It’s like a relay race: each stage adds pressure incrementally, and the total head is the sum of the heads generated by each individual impeller. Therefore, the pump’s maximum head is primarily determined by the number of stages and the head capacity of each individual impeller.

2026-04-07

Why are MD-type pumps generally chosen for mine drainage?

Anyone in the mining industry knows that drainage is of paramount importance: if drainage is inadequate, it not only disrupts production but can also create serious safety hazards. When it comes to selecting drainage pumps, veteran miners and procurement professionals alike overwhelmingly choose MD-type pumps—not by accident. The key reason is that these pumps are perfectly tailored to the harsh operating conditions found in mines. Today, we’ll explain it in plain, easy-to-understand terms.

2026-04-01

How should high-pressure seawater marine pumps be routinely maintained?

When it comes to high-pressure seawater pumps on board, remember this: 30% depends on quality, and 70% depends on proper maintenance! These pumps are immersed in seawater around the clock and operate under high pressure. If they’re not regularly inspected and maintained, minor issues can escalate into major failures—delaying your voyage and resulting in costly, labor-intensive repairs. So never skimp on routine upkeep.

2026-03-20

Recirculation Ammonia Pump

Many professionals in the chemical and coking industries struggle when selecting circulating ammonia-water pumps, worrying that an improper choice will disrupt production, increase energy consumption, and shorten equipment life. The key, first and foremost, is to focus on two critical parameters—flow rate and head—which form the foundation of the selection process; get these wrong, and all other considerations become irrelevant. Flow rate refers to the volume of ammonia water that must be circulated per hour. For example, in the desulfurization section of a coking plant, if 30 cubic meters of ammonia water are required every hour, that figure should be used as the basis for selection. It’s also important to allow for a 10%–15% margin to accommodate fluctuations in flow during operation, thereby preventing shortages that could delay production.

2026-03-18

In what operating conditions are long-axis fire pumps used?

Many people aren’t clear about the specific applications of long-shaft fire pumps. In fact, their core advantages lie in deep-well water intake and high-pressure water delivery, making them ideally suited for conditions that ordinary fire pumps simply can’t handle. To put it simply, they can reach deep into the water while simultaneously delivering water to great heights.

2026-03-16

In which industries are fluoropolymer-lined chemical pumps used?

Many friends in the industrial sector know that fluoropolymer-lined chemical pumps are both corrosion‑resistant and wear‑resistant, but they’re not always clear about the specific industries where these pumps are used. In fact, their applications are incredibly broad—whenever the task involves conveying corrosive media, these pumps are virtually indispensable. The first core industry: the chemical industry. Whether it’s organic chemistry or inorganic chemistry, processes invariably involve highly corrosive media such as strong acids, strong bases, and salt solutions. Ordinary pumps would be corroded and rendered useless after just a few days of use—this is precisely where fluoropolymer-lined pumps shine. For instance, when it comes to pumping sulfuric acid or sodium hydroxide, these pumps are the ones that ensure smooth operation and safety, serving as the “mainstay” of chemical production.

2026-03-13

How to Choose a Suitable High-Head Centrifugal Pump?

Many friends are hesitant to choose a high-head centrifugal pump, worrying they might pick the wrong one or run into pitfalls—but there’s really no need to worry! Today, we’ll break down the pump-selection process in simple, straightforward language. Just follow along, and you’ll be able to find the perfect pump for your needs. We’ll keep things clear and concise, avoiding unnecessary jargon and keeping the word count just right.

2026-03-10

Why do pumps used for pumping sewage, seawater, and chemical wastewater experience particularly severe corrosion?

Many users are puzzled by this: Although the same pump can operate reliably for several years when used to pump clean water, as soon as it’s employed to transport sewage, seawater, or chemical wastewater, it quickly becomes riddled with rust, develops perforations and leaks, and may even become completely unusable.

2026-03-05

< 1234...24 >
Changsha Zhonglian Pump Industry Co., Ltd.
Changsha Zhonglian Pump Industry Co., Ltd.

Hotline:

+86 0731-88632200

Changsha Zhonglian Pump Industry Co., Ltd.

Export Trade/Technical Support:

+86 153-4831-2290

Changsha Zhonglian Pump Industry Co., Ltd.

Head Office Email:

zoomlian@yeah.net

Changsha Zhonglian Pump Industry Co., Ltd.

No. 210, Huanbao Zhong Road, Yuhua District, Changsha City, Hunan Province, Leowoju Wisdom Valley Building B, 8th Floor

Quick Navigation

Facebook Linkedin Twitter Tumblr Pinterest

Hot Products

Online Consultation

Submit Message
Business License

Powered by:www.300.cn Changsha SEO

COOKIES

Our website uses cookies and similar technologies to personalize the advertising shown to you and to help you get the best experience on our website. For more information, see our Privacy & Cookie Policy

COOKIES

Our website uses cookies and similar technologies to personalize the advertising shown to you and to help you get the best experience on our website. For more information, see our Privacy & Cookie Policy

These cookies are necessary for basic functions such as payment. Standard cookies cannot be turned off and do not store any of your information.

These cookies collect information, such as how many people are using our site or which pages are popular, to help us improve the customer experience. Turning these cookies off will mean we can't collect information to improve your experience.

These cookies enable the website to provide enhanced functionality and personalization. They may be set by us or by third-party providers whose services we have added to our pages. If you do not allow these cookies, some or all of these services may not function properly.

These cookies help us understand what you are interested in so that we can show you relevant advertising on other websites. Turning these cookies off will mean we are unable to show you any personalized advertising.