heavy duty slurry pumps suitable for strong abrasive, high density, highhead slurries

Series EHM(R), EGM, EMM, ELM mining slurry pump are widely used in the mining,metallurgy, petrochemical, coal washery, power plant, dredging, buildingmaterial and other industrial departments etc. Series EHM and EGM slurry pumps are heavy duty slurry pumps suitable for strong abrasive, high density, highhead slurries, while EMM and ELM re middle and light duty pumps of higher priceperformance ratio in transporting middle and low concentration and corrosiveslurries.

Typical Application：

• Fine ore slurry transporting
• Tailing transporting
• Hydrocyclone Feed
• Coal and power plant ash
• Coal washer processing  
• Mine and mineral processing
• Alumina Industry
• Strong abrasive and high density slurry

Advantages of horizontal design:

• It is easier to install, inspect, maintain, and service because its rotor and internals are easily accessible.
• It can be coupled directly to a variety of drivers including electric motor, engine, and turbine (steam, gas or power recovery hydraulic turbine.)
• It can be supplied in either overhang design for low suction pressure service, or in between-bearing design for high suction pressure service.
• It can be supplied in various nozzle configuration to simplify, or match the external site piping. The nozzle configuration can be of end suction top discharge, top suction top discharge, or side suction side discharge.
• Its low headroom requirement makes it suitable for most indoor installations.
  
  

Advantages of vertical design:

• It requires a smaller footprint and is suitable for 
  installation where the ground surface area is limited, or is at a premium.
• With a vertical line shaft pump the impeller setting below the ground can be lowered to increase the site NPSHA.
• It is suitable for higher temperature service. Because of its radial-split case design it can be centerline-mounted for even thermal expansion.
• It is suitable for higher pressure service because of its simplified bolting and confined-gasket design.

Vertical slurry pump occupies a limited area and use sufficiently the space in verticaldirection. Series EVM(R) vertical sump pump are designed to transport the slurry inpool and widely used in the mining, metallurgy, coal washery, power plant, andother industrial departments, etc.

Typical Application

• Mine and mineral processing
• Hydrocyclone feed
• Coal and power plant ash handling
• Coal washery draining
• Steelworks waste residue treatment

EHM/EVM series are more anti-abrasive while EHR/EVR series are more suitable to transporthighly corrosive slurries or slurries with smaller granule without sharp edges.

Features

EHM(R)

• The bearing assembly of this kind of abrasive slurry pump is cylindrical structure. It can adjust the space between impeller and front liner easily and be removed completely.
• The shaft seal uses the packing seal, expeller seal and mechanical seal.
• The discharge branch can be positioned at intervals of 45 degrees by request and oriented to any eight positions to suit installations and applications.
• The drive type could be DC (direct connection), V-belt drive, gear box reducer, hydraulic couplings, VFD, SCR control, etc.
• It can be installed in multistage series to meet the delivery for long distance.
• The cover plate, frame plate, bearing assembly and so on could be interchangeable with wear-resistance metal or rubber.

EVM(R)

• EVM(R) sump pump doesn’t need any seal and the seal water. It could work normally even if the suction volume is not enough.
• The sump pumps are of single casing structure with the advantages of light weight, small volume, easy installation and so on.
• The casing of type EVM pumps are made of wear-resistant metal. The wear parts are made of high chromium for the EVM series and rubber lined for the EVR series.
• The vertical slurry pump transmission shaft and suction pipe could be chosen according to liquid surface of the slurry pool. The pump could run smoothly under various speeds.

Baffinland CEO says no to shipping ore through Northwest Passage

The head of a Canadian mining company developing a massive mineral deposit within the Arctic Circle said the Northwest Passage won’t work as a viable shipping route to Europe and Asia.

Baffinland Iron Mines Corp., which is owned by steel giant ArcelorMittal and private equity firm Iron Ore Holdings LP, is building one of the largest iron ore mines in the world on Baffin Island in Nunavut. The $750-million Mary River mine is on track to open in 2015 and the ore will be shipped to Europe.

“In my opinion the Northwest Passage is not a transit route of any significance,” Tom Paddon, Baffinland’s chief executive, told the Arctic Futures 2013 conference in Brussels on Thursday.

Mr. Paddon said one problem is the Northwest Passage’s depth, which prevents it from becoming a major trade route. Many commodities such as iron ore and coal are shipped on bulk carriers that need a depth of up to 19 metres, also known as “capesize” vessels. Much of the Northwest Passage is only 15 metres deep.

“So the iron ore business is not looking to move material from one side of the world to the other through the Northwest Passage unless somebody invents a different way to sail a boat,” he said.

His opinion conflicts with that of the Canadian government, which has gone to great lengths to push utilization of the Northwest Passage as a way to ensure Canadian sovereignty in the North. Canada is also worried that Russia’s rival Northern Sea Route will develop more quickly as a shipping alternative.

The federal government helped sponsor the recent voyage from Vancouver to Finland of a Danish ship loaded with metallurgical coal, which is used to make steel. The ship was the first bulk carrier to sail through the Northwest Passage and the voyage was hailed as proof that the route provides a faster and cheaper alternative to the Panama Canal.

Some experts agree with Mr. Paddon.

Kathrin Keil, a scientist at Germany’s Institute for Advanced Sustainability Studies, dismissed the trip, noting that the Danish ship was escorted by a Canadian Coastguard vessel. “These are all stunts,” she said during a break in the Arctic conference. “These are just to show we have the technology to do it. They have nothing to do with trade.”

Ms. Keil said Arctic shipping in general is too expensive to become a real alternative to traditional routes, even though the northern trips are much shorter. She told the conference that just 46 ships crossed Russia’s Northern Sea Route last year and only 40 have made the trip this year. Many of those trips were domestic voyages within Russia and did not go all the way through to Asia. By contrast, 18,000 ships use the Suez Canal annually and 13,000 ply the Panama Canal.

“It’s a niche,” she said referring to the Arctic route. “For certain ships, for certain commodities, for a certain time of the year.”

She added that among the advantages of the longer southern voyage is the opportunity to stop at ports along the way, something that can’t happen in the Arctic. “You want to call at all these other ports. You want to actually serve all these other markets too,” she said.

Arctic shipping will remain largely “destinational,” or for specific purposes such as sending supplies to mining companies or moving resources to ports, she said. “But [the Arctic] is not an all year round, global maritime trade route. That’s not what it is and probably won’t be.”

Anders Backman, an expert on Arctic shipping from the University of Gothenberg in Sweden, told the conference that he also did not believe shipping would increase significantly in the North because of the expense and difficult sailing conditions. “Maybe it will increase compared to today,” he said. “But it will not be dramatic.”

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Conflict Minerals

Nowadays, it is the mobile terminals are so popular with various sizes ranging from tabloid to smartphone. Many mineralsare in great demand because they are the essential to the opponents of those popular electronics. “Conflict minerals”, mostly in the eastern provinces ofthe Democratic Republic of the Congo, are mined in conditions of armed conflictand human rights abuses, located from populated areas in remote and dangerous regions. Blood Diamonds filmed by Leonardo DiCaprio, can well exemplify the phenomenon of the mining conditions in some African district.

Those minerals would pass through the hands of numerous middlemen as they are shipped out of Congo, through neighboring countries such as Rwanda or Burundi, to East Asian processing plants.

The US and the Securities and ExchangeCommission (SEC) passed a set of strict rules which require manufacturers toreport from where they get its tantalum, tin, gold or tungsten in an attempt curb the import of tainted minerals. However, there are critics who hold that the root of the conflict is left out by the regulations.

This article come from: http://china-slurry-pump.com/News/Conflict_Minerals.html

slurry pump

15th Brazilian Mining Congress International Mining Exhibition

As the largest Latin American mining trade fair, there are over 50,000 visitors and 500 exhibitors in the International Mining Exhibition (EXPOSIBRAM) 2013. It is held every two years with hundreds of entrepreneurs, government and private organizations. In 2013, the events’ 15th edition organized by the Brazilian Mining Association will be held from September 23rd to 26th, in Belo Horizonte (MG), Brazil.

Brazil is the fifth largest country in the world, and third largest in the Americas. Brazil contains extremely rich mineral reserves that are only partly exploited, including iron ore, tin, copper, pyrochlore (from which ferroniobium is derived), and bauxite. Excellence has undertaken many projects in Brazil as well as many other places. Our booth numbers in EXPOSIBRAM 2013 are B12, B14, C11, C13. See you in Brazil!

Booth No.: B12, B14, C11, C13
Date: September 23-26
Location:  Belo Horizonte (MG), Brazil

Excellence is a professional slurry pump manufacturer from China. The best china slurry pump manufacture devoting on offering the solutions of Industrial slurry pump application. We offered the professional mining slurry pump, gravel pump , sand pump, vertical sump pump, froth pump solutions and service all over the world!

  

Our products are widely used in mining, metallurgy, coal washing, power plant, sewage water treatment, dredging, and chemical and petroleum industries. Under the confidence of our clients home and abroad, we are becoming one of the most important slurry pump suppliers in China, and we have offered the professional pump solutions and service over 60 countries in the world.

Newmont to sell noncore Nevada operation

US gold major Newmont Mining on Tuesday announced it had inked a letter of intent to sell its Midas operation, in Nevada, to Waterton Global Resource Management.

Newmont said the move to explore the sale of the operation was consistent with its strategy of strengthen its portfolio by divesting noncore assets.

“Waterton has established a presence in Nevada and is well positioned to enable Midas’s success over the long term by using its processing, and other assets, to support Waterton’s operations in Nevada,” Newmont VP for strategic development Randy Engelsaid.

"We are very excited to be working with Newmont to develop the full potential of both the Midas and Hollister operations. The completion of our acquisition of the Midas operation will add another high-quality gold mining operation to our portfolio of North American operations,” Waterton managing partner and chief investment officer Isser Elishis added.

The parties had agreed that the letter of intent would terminate on October 14, unless extended by mutual agreement, or earlier superseded by the acquisition agreement.

The proposed transaction is subject to customary closing conditions, including execution and delivery of an acquisition agreement, completion of confirmatory due diligence and receipt of all required regulatory and third party approvals.

Newmont, which had been pouring gold in Nevada for 50 years, has 14 openpit and four underground mines and 14 processing facilities in the state.

When purchasing slurry pumps

You can save a lot of time if you know the following terms when purchasing slurry pumps. Here are some of most common terms that would come up during your buying process.

Head (H): A measure of the energy possessed by water at a given location in the water system
expressed in feet of head for centrifugal slurry pumps; (2) a measure of the pressure or force exerted by water expressed in feet.

Capacity (Q): A measure of the liquid volume capacity of a slurry pump.

NPSH:
Net Positive Suction Head Available (NPSHa): The NPSHa available to prevent cavitation of the pump. To calculate the NPSHa, you take the [Static Suction Head] plus [Suction Vessel Surface Pressure Head] minus [vapor pressure of your product] minus [friction losses in the suction piping, valves and fittings].
- Net Positive Suction Head Required (NPSHr): The NPSHr to stop a pump from cavitating. The NPSHr is generally supplied to you by the slurry pump manufacturer.

Efficiency: A ratio of total power output to the total power input, expressed as a percent.

Pressure: The force exerted on the walls of a pipe by a liquid. Normally measured in pounds per square inch (psi).

Viscosity: A measure of a liquid’s resistance to flow. Essentially it’s a how thick the liquid is. The viscosity determines the type of pump used, the speed it can run at, and with gear pumps, the internal clearances required.

Slurry Characteristics Parameters:
Concentration by weight (Cw): The concentration by weight reflects the percent ratio of the mass of dissolved solids to the total mass of the solution.
Concentration by volume (Cv): The concentration by weight reflects the percent ratio of the volume of dissolved solids to the total volume of the solution.
Specific Gravity (SG): The ratio of the weight of a given volume of liquid to pure water. Pumping heavy liquids (specific gravity greater than 1.0) will require more horsepower.
There are other parameters should be take into consideration such as particle size, pH and temperature, etc.

Suction head: Condition that occurs when the liquid source is above the centerline of the pump.

Suction lift: Condition that occurs when the liquid source is below the centerline of the pump.

Pump performance curve: A diagram provided to explain the relationship between the head and the flow rate of a slurry pump using various size impellers. The curve also includes efficiency, NPSH required, and horse power consumption as a function of flow.

cyclone feeding pumps

Excellence slurry pumps are widely used as cyclone feeding pumps. A cyclone is a device to classify, separate or sort particles in a liquid suspension based on the ratio of their centripetal force to fluid resistance.

A cyclone will normally have a cylindrical section at the top where liquid is being fed tangentially, and a conical base. The angle, and hence length of the conical section, plays a role in determining operating characteristics.