Retexo-RISP GmbH, the Marketing Support Partner

The
IVU-FAR
(Fly Ash Recycling)
process
IVU
Engineering Company for Environmental Technology
Erfurt, Germany
and its
Marketing Support Partner
Retexo-RISP GmbH
Altenburger Str. 31
D-04617 Rositz/Thür.
Tel.: +49-(0) 344 98/ 466-0
Fax: +49-(0) 344 98/ 466-11
Edition 2000/1

Page Contents
The
IVU-FAR
Fly Ash Recycling Process
INDEX
4 Retexo-RISP GmbH, the Marketing Support Partners
5 The DISPERSOPT Fly Ash Recycling (FAR) Process
6 Your contact is ...
7 The IVU-FAR Technology
8 The Plant
9 IVU-FAR Plant - Grosskayna
10 FAR Reactor Processing Unit
11 IVU-FAR Schematic
12 The Process
13 DISPERGAT - Some of the uses of the product
14 DISPERGAT - Applications
15 DISPERGAT - Compressive Strength Analysis (Dry)
16 DISPERGAT - Compressive Strength Anasysis (Underwater)
17 DISPERGAT - Perviousness test
18, 19 If you want to know more ...
20 Examples of Use - for roads and paths
21 Road surface tests (German RSTO 86 code 3.1 Class III))
- 2 -

22 Road surface tests (German RSTO 86 code 3.2 Class III)
23 Road surface tests (German RSTO 86 code 3.1 Class IV)
24 The IVU-FAR Additive for the preparation of Clay
25, 26, 27 The IVU-FAR Sorbent for desulphurisation
28 If you want to visit us ...
29 IVU-FAR Plant Grosskayna - Route Directions
30 Map to Grosskayna and Rositz
31 Directions to Rositz
32 The development of the DISPERSOPT - Fly Ash Recycling
Process
- 3 -

Retexo-RISP GmbH, the Marketing Support Partner
as part of a joint commitment to environmental management
More and more environmental problems affect our daily lives. The question of "who
to turn to for help" becomes urgent...
The mission of the RetexoGruppe is to contribute to the preservation of natural resources.
In support of it's partners, Retexo takes part in improving the environment
for today and the future.
The main thrusts are:
• teaching environmental consciousness
• the promotion of environmental technology
• the marketing and sales of ecological solutions, especially in the fields of
alternative power sources or recycling
• the creation of new jobs through the introduction of environmental
technology. An example is represented by the IVU-Fly Ash Recycling
technology described as follows...
- 4 -

The DISPERSOPT Fly-Ash Recycling-(FAR) Process
Based on a study undertaken by the WORLD COAL INSTITUTE, London, UK
approximately
of coal are mined worldwide each year.
3,8 Billion metric tonnes
After conversion of the coal into, for example, electricity, approximately
400.000.000 metric tonnes
of fly ash are left as residue as well as other waste products.
Approximately 10 % of the fly ash is used as by-mix for other products such as cement etc. Almost
90% is tipped onto spoil heaps or down mines, causing ecological problems.
As a consequence:
- large areas, quite often attractive countryside or valuable farm land, are changed into ugly ash tips;
- soil and groundwater are polluted;
- erosion and dust cause serious health problems.
Ash and noxious substances are a serious ecological concern - however, this is a
problem which can be easily solved!
Since 1995 the patented DISPERSOPT FAR-PROCESS of the IVU mbH, Erfurt, Germany has been available,
changing ash into a valuable cement-like building material.
It is also a very economical desulphurisation sorbent for coal fuelled power stations and, last but not least, can be
converted into an additive for rapid clay processing within the brick manufacturing and cement industry.
- 5 -

The result:
- instead of huge ash tips an ecological building material of considerable commercial value is produced;
- instead of excessive exploitation of natural resources (lime, dolomite, etc.) a highly economical and
ecologically benefical opportunity is possible;
- instead of high energy consumption in the production of building material, savings in cost and energy are
effected due to the of processing methods utilised;
- instead of large scale environmentally harmful tipping of dangerous and noxious substances there can be
large scale reduction in land use with considerable ecological benefits;
- the time consuming and high cost clay processing, for cement and brick production, can be undertaken in a
few minutes, and
- sulphur emissions can be drastically reduced by using processed ash as a desulphurisation sorbent.
By using the IVU-DISPERSOPT PROCESS a worldwide environmental problem can
be overcome in a series of ecological and commercially valuable products.
Based on these facts, the IVU-DISPSERSOPT PROCESS, and its related technology, one FAR plant near Leipzig,
operating since 1995 and a second plant in Rositz, to be completed in 2000,was selected to become an external project
of the EXPO 2000, including a stand in the ‘Global Pavillion’ at the EXPO site in Hannover.
The DISPERSOPT Processtarget groups are: - operators of waste tips
- electricity corporations - the building industry
- operators of coal fuelled power plants - the steel industry
- operators of thermal utilisation plants - the brick and cement industry
- operators of incinerators for waste products
As the marketing and sales partner of the IVU mbH, Retexo-RISP GmbH is responsible for general technical and
commercial information required by potential clients and their guidance and hospitality whilst visiting us during the
EXPO 2000. If the DISPERSOPT PROCESS should be of interest to you, please do not hesitate to contact us.
We look forward to hearing from you.
Your contact is:
Erhard Schlüter or Norman Owen
Retexo-RISP GmbH Retexo-RISP Ltd. (U.K.)
Tel.: ++49/03 44 98/4 66-0 (-14); Tel.: ++ 44/181-657-0498
Fax: + 49/03 34 98/4 66-11 e-mail: norman.owen@retexo.co.uk
e-mail: info@retexo.de
- 6 -

The IVU - FAR Technology
• The plant
• The process
• The possibilities
IVU-Fly Ash Recycling,
innovative, eonomical, ecological
- 7 -

The Plant
The IVU-FAR prototype plant in Großkayna Germany, has been designed and
constructed for the production of building materials from the processing of ash which
may be used for road building, backfilling in mines, or, the deposit of contaminated
waste materials derived as a by-product of industrial processes. The end product is
ready for delivery to site.
Because of the multifunctional layout of the plant it is possible to recycle on an industrial
scale, approximately 150 tons of ash per shift, combustion products derived
from coal power stations as well as from different mining plant and waste. The same
is possible with the ash from waste incinerators.
Based on advanced technology, it is possible to treat all common ash. In addition, the
IVU-FAR plant allows complex production with mixtures of different ash, as well as
ash combined with waste materials. It is possible to establish the specific treatment
characteristics of the different components when setting quality parameters.
The highly developed, controlled, recycling enables the production of a composit
product of ash and other recycled materials. During the hardening of the product a
sealing process takes place which converts dangerous, contaminated waste material
into a low-class, non-toxic, easy to store material.
The plant is equipped with a linked, computer controlled, measuring system to assure
optimum production and to log and aleviate errors.
It is possible to test and alter the mixing process to change the end product. The
production process can be reorganised by using the recycling programme previously
mentioned. That means that the plant works without creating any waste products. The
plant is provided with a cleaning and surface water recovery system which avoids
contaminated sewage. By means of a wet-type dust collector process, steam and dust
emissions are collected in a closed cycle and reused.
The IVU-FAR plant technology is designed for all weather/climate operation.
The IVU-FAR plant Großkayna is a basic module. All future ash utilisation plants
can be planned according to customer needs. It is important to underline the high
level of automation within the plant, enhancing it's economic viability.
- 8 -

IVU-FAR-Anlage
IVU-FAR-plant
Großkayna

FAR-Behandlungselement
FAR-processing unit

The Process
The previously described FAR technology demonstrates that it is possible to transform
ash, of different types and constituency, into a valuable building material with
attractive economical and, no less important, ecological advantages.
The most attractive aspect of the process is the possibility to mix ash with different
industrial waste materials utilising the inerting effect of the base-matrix (the ash).
A practical example is represented by the backfilling of mines. During the processing
of the basic material, mine waste and water can be added. The complex structure,
insoluble in water after hardening, fulfills the necessary quality requirements of the
backfilling.
In addition it is possible to solve specific and expensive waste problems. The process
developed for this application reduces costs by more than fifty per cent.
Also the "normal" basic product, which can be mixed with hardcore from demolished
buildings etc., offers new marketing opportunities due to it's suitability for road
building projects.
The foundation of the process is a controlled treatment system developed over long
years of research. At the heart of this technology is the temperature control of
different exothermic processes by means of specially developed interactive elements.
The specific characteristic of the process offers the possibility of avoiding the
common, however quite complicated, measurment of chemical influencing factors (e.
g. the effect of free-lime content).
The treated ash, after a process of about 50 minutes, is ready for transportation and
for storage in silos. The product can be subjected at any time subsequently to a final
variable treatment, depending upon the proposed usage of the product. Here are just a
few examples of how this material can be used:
- 12 -

DISPERGAT
Some of the uses of the product
• as a stand alone dry (cement like), building material, which does not
necessarily require the addition of gravel, stones, etc. It only needs the addition of
water and can be used for road construction, civil engineering, etc.,
• as a dry binding material for delivery to site for the inclusion of crushed old
concrete, hardcore, etc., to be mixed with water, on site, to make a concrete like
building material for road construction, civil engineering, etc.,
• as a binding material for the complete immobilisation of noxious substances in
toxic waste making a product that is waterproof and eluation proof, for use in landfill
sites, retaining walls, access roads etc.,
• as an additive to clay used in cement or brick manufacture. It cuts down the
preparation time for the clay to a few minutes through an homogenic process
irrespective of the water content,
• as a desulphirisation sorbent in dry or semi-dry, coal fired power station plant
where the equipment is already in use. This sorbent can also be used in CFB
equiped stations.
It should be noted that DISPERGAT can be transported in a dry state, in standard silo
trucks, or can be stored in silos. It is not adhesive or toxic. It can also be transported
as a wet-mix in open trucks. Ready-mix, revolving drum, trucks are not required.
The most important advantage of DISPERGAT is that the mechanical/ physical
characteristics and quality parameters are guaranteed in the final product, i.e.
compressive strength, proof against eluation, underwater storage durability and
permanence are ensured after the hardening process is complete.
The hardened material corresponds with LAGA Z 2 or even Z 1 requirements
concerning the treatment of waste products to produce building materials.
- 13 -

The IVU-FAR Technology
DISPERGAT
APPLICATIONS
Field of application Purpose To substitute for
Hydraulic engineering Prefabricated elements
etc.
Road construction
Track construction
Civil engineering
Noise control
Land-fill site
construction
Waste recycling
Waste disposal
Road beds
Noise absorbing walls
Retaining walls
Abutments
Drains
Pipes, etc.
Mineral barriers
Mineral sealings
Retaining walls
Tip covers
etc.
Immobilisation
Inertization
etc.
- 14 -
Concrete / Cement
Gravel
Gravel/Grit/Sand
Hard rock
Clay
Concrete
Concrete / Cement
Gravel
Lime
Hard rock
Asphalt-concrete
Clay
Cement
Glass
Lead
© RetexoGruppe

The IVU-FAR Technology
DISPERGAT
COMPRESSIVE STRENGTH ANALYSIS ( d r y )
Material: 100 % Filter Ash Treatment: IVU-DISPERSOPT process
Material/Source
Dekon MUM 22
22
20
Dekon BOR 28
31
30
Dekon ESP 23
27
26
Compressive strength MPa = N/mm² (1 MPa = 10 Kp/cm²)
After 7 days after 28 days after 90 days
23
24
26
36
37
34
30
30
30
41
42
42
32
39
37
35
31
33
© RetexoGruppe

The IVU-FAR Technology
DISPERGAT
COMPRESSIVE STRENGTH ANALYSIS ( u n d e r w a t e r )
Material: 100 % Fly Ash Treatment: IVU-DISPERSOPT process
Code normal storage 7 days normal storage
+ 21 days underwater storage
temperature 20 ° C
compressive
strength MPa
bending
strength MPa
Compressive
strength MPa
bending
strength MPa
7 days normal storage
+ 21 days underwater storage
temperature 4 ° C
Compressive
strength MPa
after 28 days after 28 days after 28 days
bending
strength MPa
underwater
storage
stability
code
M 29 25.9 4.0 25.3 3.8 19.0 3.4 3d
M 20 25.6 6.1 32.0 6.3 25.4 4.7 3d
B 5 28.4 4.7 28.8 3.9 28.6 4.4 3d
B 4 23.6 4.5 29.6 3.4 27.5 4.1 3d
E 4 25.5 4.8 27.3 3.7 21.9 3.7 5d
EB 4/3 26.7 5.2 24.5 3.8 21.4 3.7 5d
© RetexoGruppe

ERDBAULABOR GÖTTINGEN
hans - Böckler - Str. 2
3400 Göttingen
Bearbeiter: Grundmann Datum: 15.07.1993
Water perviousness (m/s) 10
1 * 10 -9
5 * 10 -10
2 * 10 -10
1 * 10 -10
5 * 10 -11
2 * 10 -10
1 * 10 -11
Perviousness test
DISPERGAT
D 70
140 210 280 350 420 490 560 630 700
Test N

If you want to know more...
We offer our support to facilitate your planning, subject to receipt of the following information:
a) Which kind of ash will be treated?
Fly ash boiler ash (slag)
fly and bad ash
b) Which combustion material is used?
brown coal lignite oil shale
brown coal briquettes hard coal
c) Origin of the coal or of the lignite (seam or deposit)?
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
d) Which steam generators are used?
mill boiler grate boiler
fluidized bed boiler
e) Specifications of the following:
- Capacity of steam generator
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Coal consumption per hour
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Average ash output per hour
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
f) Which desulphurisation process is used in the case where no fluidized bed boiler is installed?
dry admix treatment spray absorption treatment
wet treatment
- 18 -

g) If you have analysed the ash, we require the following values for each chemical:
g 1) CaO (> 10%). . . . . g 5) Na2O . . . . .
g 2) MgO . . . . . g 6) K2O . . . . .
g 3) Al2O3 . . . . g 7) SiO2 . . . . .
g 4) Fe2O3 . . . . . g 8) SO3 . . . . .
obtained from the basic analysis.
h) Is it planned, to add fly ash from other combustion plant?
- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
i) How many tons of ash will be treated within 8/16/24 hours?
- (8). . . . . . . . . . . . .(16) . . . . . . . . . . (24). . . . . . . . . . . . .
j) Are you considering the possibility of mixing other waste materials during the treatment? If
yes, which types?
- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
k) Which marketing and sales strategy will you use for your product?
- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
l) Which applications do you see for your product?
land-fill construction mining (backfilling)
roads, paths, or hydraulic engineering
- other: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Company address
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
department/operator
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tel.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
area code city Fax
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
date signature
- 19 -

Examples of use
for roads and paths
- 20 -

The IVU-FAR Additive
for the preparation of clay
Used in the brick manufacture and the cement industry
This remarkable additive has numerous uses and new applications are being
identified all the time.
The maximum quantity of additive necessary in the mixture is about 8 % by
volume and is suitable for dry and waterlogged clay. The mixing is undertaken in
specially designed IVU equipment which can be manufactured to handle any
volume required.
Because of the exceptional nature of the additive it will produce a much
higher quality end product at a much reduced cost in time and energy.
For example:
- brick and cement type clays normally take days, sometimes weeks to prepare.
The manufacturers are often prevented from using the clay at certain times of
the year when it is either too dry or waterlogged. The IVU FAR Additive
enables the clay to be prepared in just a few minutes with a guaranteed
regular level of consistency and malleability at any time of the year,
- treated clay can be transported conveniently and does not degrade in time.
It can also be stored in granular form for long periods. In this condition it
is not adhesive and can be handled easily,
- IVU takes responsibility for providing the mixing plant and will make all setup
arrangements to create a turn-key operation. It is possible to utilise
existing plant, dependent upon the type of operation, thereby reducing the
likelihood of large new investment,
- IVU-FAR Additive treated clay can also be used in providing and preparing
clay membranes for land-fill sites in almost any weather conditions and all
seasons. These membranes are elastic and impervious to leeching.
The IVU-FAR Additive has already proved to be a valuable and very cost
effective product used in a rapidly growing number of situations, making
them ecologically safe. New uses are being identified all the time.
- 24 -

The IVU-FAR Sorbent
for
dry and semi-dry desulphurisation
or CFB processes
• for improving efficiency within dry and semi-dry desulphurisation processes
• for reducing the cost of lime processing
• for reducing lime consumption by up to 50 %
• for the production of a high-quality matrix ash for DISPERGAT-building
material.
The IVU-FAR Sorbent, an exceptional economic
opportunity . . .
- 25 -

Desulphurisation is an ecological requirement demanded by law.
This requirement necessitates expensive plant and running costs. This is especially
true concerning the cost of lime powder used in the process.
By using IVU-FAR Sorbent within dry and semi-dry desulphurisation or CFB
processes, costs can be kept to the minimum.
In addition, the Sorbent Desulphurisation Process offers a matrix ash which can be
used as an economical and ecological building material.
In general, the production of IVU-FAR Desulphurisation Sorbent is based on the
Fly Ash Recycling (FAR) principle.
The decisive difference is that, by means of a special mixer, the ash to be treated is
mixed with lime granules of a grain size up to 8 mm. The expensive fine milling
process of lime stone is no longer required.
The dosage of the lime bymix depends on the degree of desulphurization required
and the sulphur content of the coal being burned.
As soon as the moistened ash lime mixture has entered the processing unit, the
lime granules disintegrate as a result of an increase in temperature caused by the
additional water.
Within the treatment duration of approximately 50 minutes, the ash particles
become carriers for the lime powder, thereby increasing the lime surface area.
After treatment, the sorbent is of a consistency that can be stored in silos, ready to
be blown into the boiler.
The outcome achieves two decisive factors:
a) the increase in lime surface area enables far greater desulphurisation
efficiency;
b) the quantity of lime powder usually required can be reduced by up to 50 %,
depending on the quality of coal and the degree of desulphurisation required.
- 26 -

Because of all these advantages, the amortization of the plant, the investment can
be for as little as three years. A no less important fact is that the desulphurisation
sorbent, after being used, has all the advantages of an excellent matrix ash, and can
be used as the basis for the creation of a quality building material, DISPERGAT.
IVU-FAR-Sorbent ash can guarantee a pressure resistance in the DISPERGAT up
to 40 Mpa.
In conclusion, it should be noted that very attractive economical results can be
expected if:
a) desulphurisation within dry, semi-dry and CFB systems is undertaken with the
aid of the IVU-FAR desulphurisation process and,
b) the DISPERGAT building material is accepted for civil engineering
purposes, i.e. road construction and mining. It is a very economical and an
ecologically sound product.
If you are interested to learn more, please do not hesitate to contact us in
Germany:
- by e-mail on: info@retexo.de
- by telephone: ++49/34498/466-0
- by fax: ++49/34498/466-11
- by writing to: Mr. Erhard Schlüter, Retexo-RISP GmbH, Altenburger
Str.31; D-04617 Rositz
United Kingdom:
- by e-mail on: norman.owen@retexo.co.uk
- by telephone: ++44/181/657/0498
- by writing to: Mr. Norman H. F. Owen, Retexo-RISP Ltd. (U.K.),
10 Hartscroft, Linton Glade, Forestdale, Croydon, Surrey,
CR0 9LA, U.K.
or, by visiting our FAR-plant. We shall be exhibiting during the EXPO 2000,
in Germany.
You will be most welcome, whichever method you choose!
- 27 -

If you want to visit us...
- 28 -

IVU-Fly Ash Recycling (FAR)Plant
Großkayna/Beuna, Germany
Route directions
A) from the North (Berlin/Leipzig-Airport):
Take the highway (Autobahn) N° 9 (E51) direction Nürnberg, pass the junction
Schkeuditzer Kreuz (Leipzig-Airport) and continue until you reach the junction
Leuna/Lützen (about 25 km south of Schkeuditzer Kreuz), turn right, direction Leuna.
After about 6 km you reach the exit Leuna/Merseburg, B 91. Take the B 91 direction
Leuna/ Merseburg.
After about 500 m you see on your right the “Raststätte Bäumchen“, after further 1.000 m
you reach the turnoff Großkayna (left). Follow the very direction until you reach the road
Großkayna/Beuna. Turn right, direction Beuna.
After about 800 m you will see on your left the signboard Recycling-Park Beuna.
Take the entrance and follow the road. The IVU-FAR-Plant is the second company on the
right.
A1) from the North (Halle):
Take the B 91 via Merseburg, direction Weissenfels, pass the Leuna-factory (on your left)
until you reach the turnoff Großkayna (right).
Follow the direction Großkayna as described under A).
B) from the East (Dresden/Leipzig):
Take the highway N° 14 direction Leipzig/Halle, until you reach the junction Schkeuditzer
Kreuz (near Leipzig-Airport, about 15 km after Leipzig-Mitte), then take highway N° 9
(E51) direction Nürnberg and continue as described under A).
B1) from Leipzig-Airport:
Take the highways N° 14 and N° 9 direction Nürnberg and continue as described under A).
C) from the East (Chemnitz, highway N° 4 / E40),
from the South (Nürnberg, highway N° 9 / E51),
from the West (Erfurt, highway N° 4 / E40):
Take the highways mentioned, until you reach the junction Hermsdorfer Kreuz, then take
(or continue along) the highway N° 9, direction Berlin, until (after about 35 km) you reach
the exit Weißenfels, B91. There take the direction Merseburg/Halle. After about 8 km you
see on your right the “Raststätte Bäumchen“, after further 1.000 m you reach the turnoff
Großkayna (left). Follow the direction Großkayna as described under A).
If you may need further information on directions please do not hesitate to contact either of the
following::
IVU-FAR-Plant, Recycling-Park Beuna Retexo-RISP GmbH, Rositz
Tel.: +49-(0)3461/506 746 Tel.: +49-(0)34498/466-0
Dipl.- Ing. Schorch (owner) Mr. Schlüter
Mr. Morlock (Eng. in Charge) United Kingdom
Mr. Norman Owen
Tel.: +44-181-657-0498;
Have a save journey! e-mail: norman.owen@retexo.co.uk
- 29 -

- 30 -

You reach us as followes:
By road:
RetexoGruppe RISP GmbH
Altenburger Str. 31, D-04617 Rositz/Thuringen
Tel.: +49/ 03 44 98/ 4 66-0 Fax: +49/ 03 44 98/ 4 66-11
A) From the direction of Leipzig (North):
You drive on the B 95 in the direction of Chemnitz until Borna, then on the B 93 until Altenburg. At the
first traffic light junction you turn right in the direction of Zeitz until the last cross roads (traffic light),
there you turn right onto the B 180 and on in the direction of Zeitz. After about 5 km you reach Rositz.
or,
A1) You drive on the A 9 in the direction of Nürnberg until the exit Weißenfels, from there on the B 91 until
Zeitz, then on the B 180 via Meuselwitz to Rositz (about 5 km from Altenburg).
B) From the direction of Dresden/ Chemnitz (East):
You drive on the A 4 in the direction of Erfurt until the exit Meerane (about 30 km from Chemnitz), from
there on the B 93 via Gößnitz until Altenburg, then on in the direction of Zeitz (B 180). After about 5 km
you reach Rositz.
C) From the direction of Nürnberg (South):
You drive on the A 9 in the direction of Leipzig/ Berlin until Hermsdorfer Kreuz, there on the the A 4 in
the direction of Dresden, pass Gera until the exit Ronneburg (about 10 km after Gera), from there on the B
7 until Altenburg-Nord. Here the B 7 turns right to Leipzig (traffic light). BUT you drive straight on the
B 180 on in the direction of Zeitz. After about 5 km you reach Rositz.
D) From the direction of Eisenach/ Erfurt/ Jena (West):
You drive on the A 4 in the direction of Dresden, straight via the Hermsdorfer Kreuz (A 4/ A 9), pass
Gera until the exit Ronneburg (about 10 km after Gera), from there on the B 7 in the direction of
Altenburg as for C).
By train:
Via Altenburg and Zeitz until Rositz.
By Plane:
Via Leipzig airport. Journey to Rositz (see A1)
Have a save journey!
- 31 -

The development of the DISPERSOPT - Fly-Ash
Recycling (FAR) Process
The past and the future
A brief history
Based on more than 10 years research and approximately 10.000 experiments Dipl.-Ing. K. Schorch, Managing
Director of the IVU mbH, Erfurt, Germany, developed the DISPERSOPT-FAR PROCESS, which turns fly ash from
coal power plants into an eluation proof ecological and commercially viable building material comparable with
cement. Noxious substances can be totally immobilised and neutralized using the process.
In 1995 the DISPERSOPT-FAR PROCESS was patented and in 1996 the first IVU-FAR Plant put into operation on
a site near Leipzig. It has produced several 100.000 tonnes of DISPERGAT since start up.
In May, 2000, the second FAR-plant will start production. The output capacity will be approximately 300.000
tonnes per annum. The investment of DM 13.0 Million needed to build this plant is expected to be recovered within
2 years.
The product, DISPERGAT, will mean that spoil tips could be a thing of the past and the fly ash and other waste
products converted to a material that can be used in road construction, dam building, back-filling of mine seams etc.
However, the most attractive use of DISPERGAT concerns the immobilisation of noxious substances as mentioned
earlier. The ettringitical (crystalline) structure of most of the ash of coal fuelled power plants allows the by-mix of
industrial and noxious waste (sludges, sediments etc.) to be immobilized and neutralized.
The pressure resistance of DISPERGAT can be set in accordance with the requirements of the projects concerned
and, depending on the ash quality, may reach as much as 50 MPa. No additional bonding agent is required.
As well as all these different applications, which also include a very economical Flue Gas Desulphurization
Sorbent for coal fuelled power plants and a cheap additive for reducing time and energy in the processing of clay
in the brick and cement industry. Last, but not least, the products have low cost and high financial gain potential in
numerous international markets.
Based on the very positive ecological and economical realities of these processes the IVU-DISPERSOPT PROCESS
and the related technology were selected as one of the leading EXPO 2000 - projects to be exhibited in the ‘Global
Pavillion’ in Hannover. They will also be demonstrated at the new FAR-Plant in Rositz between Leipzig and Gera
The DISPERSOPT-FAR-PROCESS, an innovative contribution towards
improving and enhancing the environment.
RISP GmbH
Retexo International Sales Promotion for environmental technology
Altenburger Str. 31, D-04617 Rositz, Tel. +49/34498-466-0, Fax +49/34498-466-11
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