LB MINERALS SK, s.r.o.
LB MINERALS SK, s.r.o. is a member of Lasselsberger Group www.lasselsberger.com
Thanks to the wide spectrum of activities in the multinational company
considered to be one of the leading suppliers of mineral raw materials in the
The company LB MINERALS SK, s.r.o. works on the field of mining, processing
and selling mineral raw materials – kaolin, ceramic clays, feldspar,
bentonite, sands and aggregates.
LB MINERALS SK, s.r.o. actually owns 6 mining areas all over the Slovak
Republic – Michaľany (bentonite), Ťahanovce (ceramic clay), Rudník
(kaolin), Rudník II (feldspar), Tomášovce (ceramic clay, refractory clay),
Šaštín (quartz sands). Except of this the company rents the deposit of
aggregates in the area of the village Drienovec (near to Košice).
Raw materials for ceramic industry – clays, kaolin and feldsar are the
most various products. They are delivered homogenised or milled (feldspar) in
bulk to the producers of building ceramics and fireproof materials.
Bentonites are mined in the eastern Slovakia and delivered predominantly for
the production of cat litter adsorbents and special bentonite-mixtures (ceramic
industry, building industry and waste management).
Quaztz sand is an important product in the portfolio of the company. Its use
is in production of light-weigt building blocks, but most famous is its use as a
special mortar sand. Sand from Šaštín can find its use in glass industry and
in metallurgy too.
Aggregates – river gravel is the newest product, but it occupies very
important place in portfolio of the company. LB MINERALS SK, s.r.o. is one of
the most important suppliers of the aggregates for concrete-production in the
region of Košice.
History of the company Lasselsberger in Slovak Republic
2004 – Incorporating of the company KERKO, a.s. into the group of
Lasselsberger 2007 – Restructuring of the company KERKO, a.s. and
delimitation of all activities connected with mining and processing of raw
materials into the company KERKO – Perlit, a.s. 2008 – Change of the
company name to LB MINERALS, a.s. 2014 – Plant Perlit in Lehôtka pod Brehmi
excluded into a new company LB PERLIT, s.r.o. 2015 – LB PERLIT s.r.o.
transformated through LB MINERALS and KNAUF into a joint venture LBK PERLIT,
24.7.2015 – change of the legal form to LB MINERALS SK, s.r.o.
Bentonit is a clayey earth whose substantial component (45–55 %) is
montmorillonite (hydrated alumina silicate of alkalis and alkaline earth), which
is the base for its outstanding rheological and sorption quatilies. The colour
of bentonite is very variable – from white, through yellow, brownish to red
or dark grey depending on present of iron oxides or other substances.
Before use, bentonite is processed by drying, milling or physically and
chemically activating. Processed bentonite finds a wide use in metallurgy,
building industry, electrical engineering, agriculture and animal breeding, food
industry or pharmaceutical industry.
The investigation of non-ore raw material deposits started in former
Czechoslovakia in 1950s. Mainly raw materials suitable for manufacturing of
ceramic production were looked for. Based on the results of this investogation
2 plants for ceramic tiles production were built (Mihalovce a Lučenec). The
plant for stoneware pipes was built in Tomášovce. No one of these plants works
in present. Today, only two deposits of ceramic raw materials are working and
the raw materials are mined and delivered for production plants manufacturing
ceramics: clay Tepličany and new deposit in Tomášovce is ready to be
exploited after finishing work in the mine Gregorova Vieska.
The Clay Tepličany is a plastic ceramic raw material used mostly for
manufacture of building ceramics (floor-tiles, wall-tiles, stoneware and similar
products). Its characteristic qualities are high strength after drying and
sintering during firing. It can as well be applied in foundries for preparation
of synthetic moulding mixtures for dry-sand moulds used for producing castings
from grey cast iron.
Clay is delivered in bulk. Clay is mined in a quarry and is transpoted to the
stockpile in Kostoľany nad Hornádom. Loading and delivery is organised on that
stockpile during the year (except of winter months 12, 1, 2). Loading can be
postponed or abolished during any time of the year because of extremely bad
weather conditions (longterm heavy reins i.e.).
Clay Tomášovce is a plastic ceramic raw material applicable in the
manufacture of ceramic buildings materials. Its characteristic qualities are
high binding power, wide thermal interval of body sintering and high resistance
of the sintered body to acids. It is characterized by refractory properties.
Clay is mined selectiv and stocked on separated homogenous stockpiles near to
the quarry. One part of material is stocked in covered boxes in Tomášovce.
Expedítion by trucks.
Feldspars are anhydrous aluminosilicates, they were created in crystallizing
process of volcanic rocks. The deposit of Rudnik-feldspar originates in
granitoids and products of their hydrothermal change and albitisation. The
exploitation of the deposit started in 2008, the possibilities of its use in
ceramic industry are actually tested. Ther are 3 quality groups of feldspar in
the deposit, the difference is predominantly in iron-content. The raw material
is actually processed in two main steps – the first step is mining and
sorting material to the size 20–80 mm. This process is aimed on the reducing
of iron content, which are concentrated in small particles of soil mixted to the
feldspar rocks. Aggregate in the size of 20–80 mm is crushed to 0–4 mm and
washed. The iron content in crushed and washed material is 0,9–1,1 %.
Feldspar is actually used in plants for building ceramics of the
Raw kaolin Rudník is a non consolidated or slightly consolidated, strongly
clayish, sandy gravel material of grayish-white to light beige colour. Kaolin is
used as an additive ceramic raw material for building ceramic production
(ceramic floor-tiles, wall-tiles or sanitary ware).
The raw kaolin is mined in a quarry near to the village Rudnik. The quarry
has been working since 1996. After mining, material is transported to the
stockpile near to the quarry. Kaolin is delivered in bulk, loading on the trucks
directly on the stockpile near to the quarry.
Sands and Aggregates
Natural sands are product of weathering and were created during all
geological periods. The deposits of quartz sands of high purity are quietly
infrequent. Deposits were usually cerated through the process of sedimentation
during long periods and were influenced by many other materials. This involved
the heterogenous character of sediments. At contrast, sand deposits in the
Záhorská nížina (Záhorská lowland) region originate from sand dunes of
Morava river alluviums and were transported to the region by wind as extremely
pure homogenous material. The rounded shape of grains is typical attribute of
sands in this region and gives the sand special properties.
Natural coarse aggregate from the mine Šaštín – Stráže
Originates from sand dunes of Morava river alluviums. The major component of
the sand is quartz (95–98 % SiO2), the rest consists of alkalis and iron
oxides. Sand – coarse aggregates 0/1 from the quarry Šaštín-Stráže is
- for building industry for buildings, roads, engineering constructions and as
aggregate to concrete
- highly convenient as an aggregate for mortar
- as an aggregate for bitumenous mixtures and surface treatment for roads,
airfields and other traffic areas
- for constructions of golf courses, beach and other sportfields and
For special purposes, sand can be processed by washing to remove even the
smallest remants of organic material and reduce the content of fine
LB Minerals SK, s.r.o. started working in locality of Drienovec in September
2008. After removing of elderly technology a new production line was built,
which ensures high quality washing and sorting of the natural river aggregates.
We offer to our customers natural not crushed aggregate of fractions from 0/1 to
fraction over 63 mm.
Thanks to the high quality production process the produced gravel is
considered to be high clean and the grain size of the fractions is very similar
to the ideal grain size curve for all purposes.
Sands and gravels are actually delivered in bulk by truck transport.
Published: 22. 2. 2023