UHPC custom made rotor and stator elements for a grinding systems

One of our customers has a very special grinding system consisting of a rotor and stator made of a very
special stone. 

This grinding system is no longer built today. We were asked if we could rebuild the elements from UHPC for this grinding system, preferably from better wear-resistant material. 14 sets were to be manufactured, as the customer has seven such grinding systems in permanent operation.
We were provided with the only unused rotor and the stator element for measuring. 

 

We made an exact mould from hard plastic, each for the rotor and the stator. We chose a very resistant mixture with silicon carbide ceramics as the UHPC wear protection material. The mixture was very fine, highly flowable, highly pressure-resistant and fast-curing.
All our castings were almost perfect, required no reworking and could be used without any problems.
With this special mixture, we were able to increase the operating time fivefold.

 

 

WPE DK International

Phone: 0049 176 601 73146
E-mail: info@wpe-dk.dk
Homepage: www.wpe-dk.com

UHPC Spray Projects in a Northern European Ore Mine

An ore mine operator in Northern Europe has commissioned one of our customers to install a UHPC wear lining on several cyclones. 

The installation was to take place on site at the ore mine. A UHPC wear protection layer of 25 mm was to be installed. The time frame for the installation was very tight due to the mine. For this reason, a UHPC spray installation was chosen. UHPC spray wear protection is sprayed on using a wet process. This has the very great advantage of a controlled and uniform material quality. Since UHPC spray only produces a maximum rebound of less than 2%, there was also no material loss during the spray installation.

Our customer first sprayed half the circumference of the cyclone parts on site and then the other circumference of the cyclone parts. Due to the ambient temperatures, the lined parts could be transported and installed without any problems after 48 hours. directly after installation, this part of the plant could go into operation.

 

 

WPE DK International

Phone: 0049 176 601 73146
E-mail: info@wpe-dk.dk
Homepage: www.wpe-dk.com

UHPC Liquid-tight constructions

Liquid-tight constructions are becoming increasingly important for the economy and insurance companies worldwide. 

In the past, industries such as refineries, seawater desalination plants, sewage treatment plants,
hydroelectric power plants, offshore industries, etc. were particularly interested. There is a huge range of sealing systems for concrete structures. Most systems are expensive, complex to install and do not have the same life expectancy as you would expect from the structure. So the sealants have to be applied several times, which in turn leads to problems and enormous
costs. For a few years now, there has been an increasing demand for coastal protection and especially flood protection structures that have to withstand the constant attack of moving seawater caused by high and low tides, but also by enormous wave movements.

Another growing problem is the rapid change in the climate and the ever-increasing amounts of rainfall that lead to inland flooding and, among other things, also flood residential buildings worldwide, which then have to be repaired in a time-consuming and costly manner. Concrete sealants are of limited or no help here.

One solution is concrete structures made of HPC or UHPC concrete. Here, waterproofing can already be achieved with a wall thickness of 10 - 15 mm. This concrete layer can be subsequently applied to any substrate in industry as well as in residential buildings. This is also possible in countries with predominantly natural material constructions.  
If the ground floor is completely built of HPC or UHPC or provided with a protective layer, no flood water, which is usually also dirty water, can penetrate into the building structure. 

After the floodwater has disappeared, the walls and floor can be cleaned with locally available cleaning machines such as high-pressure water jets, after which this area is immediately habitable again.

In industry, a UHPC layer can completely prevent or hold back breakthroughs for a very long time in the event of liquid attack from the outside, i.e. from floodwater masses, or from the inside in the event of ruptures or leaks in liquid tanks.

Sewage treatment plants can be constructed directly from HPC or UHPC, or they can be retrofitted after prior inspection of the building structure. The same applies to biotank systems for the production of biogas.

WPE DK International

Phone: 0049 176 601 73146
E-mail: info@wpe-dk.dk
Homepage: www.wpe-dk.com

UHPC Wear Protection lined pipe components produced in Vietnam

 Peter Severin, our UHPC partner for Vietnam, in cooperation with a Vietnamese steel construction
company, will offer UHPC wear protection lined pipeline segments in all sizes and geometries. Peter and the steel construction company have many years of experience in the production of piping elements for hydraulic and pneumatic conveying. These pipeline components have been used in power plants, steel mills, cement works and mines for decades. 

WPE DK International

Phone: 0049 176 601 73146
E-mail: info@wpe-dk.dk
Homepage: www.wpe-dk.com

UHPC silicon carbide custom-made burner elements for an ALSTOM coal-fired power plant project

The company ALSTOM wanted us to place an order for the supply and lining of very special burner parts
for a coal-fired power station. Due to the coal composition, the specially required flow conveyance and the very high temperatures, our customer had specified silicon carbide as the wear protection material. After we had calculated the costs of the material and the production, the responsible project managers at ALSTOM almost had a heart attack. The costs were very far over the planned budget and the delivery time for the custom-made silicon carbide elements was almost three times as long as ALSTOM had planned. 

We then offered ALSTOM a lining with a silicon carbide UHPC wear-resistant concrete as an alternative. The material costs were reduced by more than 50% and the delivery time of the elements manufactured by us was reduced by more than 70% compared to the elements made of silicon carbide ceramics. As we had already supplied many UHPC linings for ALSTOM over the past decades, the project managers had complete confidence in our proposed solution.

The production of the burner elements was carried out according to our time schedule and the elements
have fulfilled their purpose until today. 

In the meantime, other burner suppliers for coal-fired power plants have also successfully used this solution worldwide.

 

 

WPE DK International

Phone: 0049 176 601 73146
E-mail: info@wpe-dk.dk
Homepage: www.wpe-dk.com

 

Our UHPC laboratory is visited by an old friend, who will take over the representation for Sweden, Norway, Denmark and Vietnam in the future.

We had a visit from long-time friends in our UHPC lab. We have known each other for more than 25 years
father and son, Finn Severin Jensen and Peter Severin Jensen. We all worked for the same company years ago. Finn and Peter were the best supervisors we had. They have worked as supervisors for UHPC installation in almost every country in the world. There is hardly anyone who knows the practice of UHPC installation in different conditions as well as these two. 

Peter will be our representative for all our HPC and UHPC products for Sweden, Norway, Denmark and Vietnam.
Peter is also planning to start a pipe section production including a wear lining in Vietnam in the next few months.

We are looking forward to a successful future together.

 

 

WPE DK International

Phone: 0049 176 601 73146
E-mail: info@wpe-dk.dk
Homepage: www.wpe-dk.com