The Kremen Group consists of companies for the extraction, processing, production and sale of quartz raw materials (quartz sand, quartzite) and for the production of refractory materials (damp, dry, special dry and special plastic mass).
The Kremen Group extracts, separates and enriches the quartz raw materials (quartz sands and gravel, quartzite – chert), mainly for the needs of glass, foundry and metallurgical industry, insulation industry, construction industry, chemical, filtering and ceramics industry, frit manufacture, production of refractory silica bricks and production of water glass and zeolites.
The company carries out its activity in cooperation with its strategic partners, RHI Magnesita CZ and EKW GmbH, both having a very long tradition (200 and 110 years).
We produce damp and dry acidic refractory mass from our own raw materials for the lining of cupolas and induction furnaces for grey, colour, ductile and steel cast as well as for the lining of ladles used in foundries and steel foundries. We also produce a palette of special dry refractory masses and special plastic refractory masses as a supplement to the damp and dry refractory masses.
We are particularly proud of our product EKA Focor LP used in foundries for the lining of ladles, which has exceptional characteristics bringing the foundries considerable savings in terms of time and energy. Our offer also comprises thermal concrete and various special refractory materials produced by our strategic partner, EKW GmbH, as well as certain equipment used in the installation of the refractory materials.
The Kremen Group carries out its activity in accordance with standard ISO 9001 and environmental standard ISO 14001.
Registered office: Dolenje Mokro Polje 40, 8310 Šentjernej
Location of activity: Mokro Polje
Registration number: 2267799
Tax number: SI11744570
Activity:
- Production and sale of refractory materials
Activity description: 23.200; exploration of other mineral resources, nos.
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Registered office: Dolenje Mokro Polje 40, 8310 Šentjernej
Location of activity: Mokro Polje, Mirna
Registration number: 2143968
VAT-ID: SI10109412
Activity:
- Extraction, separation and refinement of quartz raw materials
Activity description: 08.990; exploration of other mineral resources, d.n.
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industrija in rudniki nekovin
Registered office: Dolenje Mokro Polje 40, 8310 Šentjernej
Location of activity: Mokro Polje, Raka (Ravno)
Registration number: 5033934
VAT-ID: SI21956588
Date of establishment: 19 November 1948
Activity:
- extraction, separation and refinement of quartz raw materials, quartz sands and gravel
- management of the related company P-D Kremen d.o.o. (extraction, separation and refinement of quartz raw materials-quartzite-chert)
- management of the related company EKW – KREMEN d.o.o. (production and sale of refractory materials)
Activity description: 08.990; exploration of other mineral resources, nos.
The company belongs to the industry of reclamation of non-metals and its activity is under the constant control of the Inspectorate of Infrastructure. It owns the mining right for which it pays the concession for the extraction of mineral raw materials to the State.
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The consumers buy our products because they are in line with their requirements, needs, wishes and expectations as well as with domestic and international standards.
Together with the sale of our products, we offer and provide to our existing and potential buyers an appropriate technical assistance on the correct use of the products to achieve the best possible results.
Slovenia, Czech Republic, Croatia, Germany, Turkey, Finland, Belgium, Bosnia and Herzegovina, Serbia, Bulgaria, Italy, Hungary, Malaysia, Indonesia, Thailand, France, Switzerland, Poland, Philippines, Spain.
Kremen has put in place a systematic concern for monitoring the quality of quartz raw materials already at the beginning of exporting the quartzite to the pretentious German market at the end of the 1950s. Due to the growing demand for the constant quality of the refractory masses, glass sands and quartzite there was a need to organise an own agricultural-technological laboratory.
However, the quality system has experienced major changes and supplements from that period, taking into account the positive practice. Increased orientation to the demanding markets for which the company had to decide after the independence of Slovenia, the loss of the southern markets and the arrival of foreign competition, brought the need to reform the quality system. In 2006, we decided to improve our quality system. We harmonised the business transactions with the international quality standard ISO 9001, which, under the term quality, does not define only the product quality but, also the combination of all activities of the company: from the production, commercial, development, organisational, financial and technical area. It applies to the entire Kremen group and to all its locations, covering the following main activities: the extraction and processing of quartz raw materials and the production of refractory materials.
The main guidance of the standard is a satisfied customer; this can be achieved by a process approach, orientation of the company's operation towards the future and constant improvement of the processes and the quality system. The establishment of quality system required a new “Quality Policy” within which we defined the essential goals for ensuring the satisfaction of our customers, suppliers and employees.
The compliance of operation with the standard enables the company a stable and long-term development and ensures an increased competition on the market.
Chemical-technological laboratory
The chemical-technological laboratory is an integral part of the Kremen d.o.o. Company. It was established already in 1963 and is designed to control the production quality of the quartz raw materials (quartzite, glass, foundry and other quartz sands and products) as well as to monitor the exploitation and research works in searching new stocks of non-metal mineral raw materials.
The laboratory is responsible for the control of the compliance of products. It analyses the non-metal mineral raw materials and refractory products with the determined analytical procedures.
The considerable progress in the field of quality control and speed of analyses was made since 2002 when an X-ray fluorescence analyser LabX-3500 Oxford Instruments was introduced into the laboratory equipment.
In tandem with the development department, the laboratory follows the needs to improve the existing products as well as the products under development dictated and requested by the customers due to the changes on the market.
Kremen d.o.o. is a mining company that was awarded a concession for research and exploitation of mineral raw materials by the State as the owner of the mineral raw materials. The company has concluded concession agreements for the deposits Raka-Ravno (quartz sands), Mirna (quartzite-chert), Prapreče (quartz gravel) and Birčna vas (refractory clay). The extraction and refinement of raw materials takes place under the constant control of the republican Mining Inspectorate.
In extracting and processing the mineral raw materials, the company takes into account all ecological standards and norms. We confirm our care for the improvement of situation in the field of environmental protection also by upgrading the quality system with the environmental management system ISO 14001, which applies to the entire Kremen group and to all its locations, covering the following main activities: the extraction and processing of quartz raw materials and the production of refractory materials.
By the established environmental management system we are committed to the integrated management of environmental protection and pushed to constantly improve our relationship to the environment. Thus, the monitoring and managing the environmental impacts have become a part of our daily activities. With the adopted environmental management policy we committed to reduce environmental, health and safety risks that could harm the workers, the environment and the population.
The largest environmental impact is caused by extracting mineral raw materials. In the past, many areas remained degraded due to the intensive exploitation and various objective reasons. The company undertook the rehabilitation of degraded areas in a systematic way by recultivating the new located areas.
The bio-rehabilitation is carried out by filling and levelling the located earths and waste sludge followed by grassing and afforestation. The rehabilitation is carried out to an extent that the area does not differ from the surrounding in any way. Our environmental goal is to locate only as many areas as needed for regular production.
The other major impact that the company causes to the environment, is the water consumption and the discharge of industrial water in the watercourse. Water is an essential element in the technological procedure of refining the quartz raw materials for the removal of unwanted alloys that are removed by washing, sieving and flotation. The technological procedure pollutes the water that runs into large sedimentation pools in which it is naturally cleaned. At the same time, the sedimentation pools serve as accumulation pools that enable a closed water circuit – the so-called environment-friendly mining. The closed water circuit means that the water is supplied into the technological process only to the extent necessary for the technological process. By doing so, the discharge of clean industrial water into the watercourse is also reduced to the minimum.
The company has obtained a water permit for the water abstraction and an environmental permit for the discharge of industrial water into the watercourse. Discharges are controlled by adequate emission monitoring. Beside the emission monitoring of waste waters, we also carry out the preventive measurements of dust and noise.
We, in the Kremen d.o.o. company and in its subsidiary companies, note that our products are indispensable and useful for everyday life, and therefore we declare for keeping our mission and providing long-term development.
The raw material deposits which are available to us, will be exploited rationally, enriched and reprocessed in such a way to keep their life time as long as possible. We want to use it so that the needs of the wide range of industries and a large number of buyers are met. Our aim is to ensure the long-term development of semi-products and products, which may bring higher processing rate together with lasting rationalization and optimization of the entire operation system.
During our production we will take steps for keeping environment clean and pleasant for humans and other living organisms. We will endeavour to ensure environmentally-favourable mining, in such a way to minimize all impacts on environment (dustiness, noise, nature appearance) and to cure/recovery the abandoned excavated surfaces as soon as possible. We will track changes and stay in compliance with all applicable laws and other requirements in the field of environmental management. We will improve our operations to prevent negative impacts on the environment by introducing new technologies and ensuring that our equipment is regularly maintained. We will ensure to make our environmental policy available to the public in the documentary form. The efficiency of quality-system management and environmental management will be verified by the periodical internal assessments and during the management review.
We will put into force our policy principles on quality-system management and environmental management by the process improvement, offering the opportunities of development and expression of creativity, using a positive energy and motivating all employees.
Together with sales of our products we offer and provide the technical consultations to our existing and might be clients, advising them how to use the products to reach the best possible results. To our buyers we want to ensure a higher rate of safety and economic effects when using our products. Therefore we endeavour to establish a dialogue and a mutually beneficial relationship with our clients, business partners, contractors and suppliers.
In our field of activity we want to be innovative, adaptive and studying company with European productivity, European business manners and international reputation, which will allow to its employees undisturbed personal and professional development, safe work and stimulating wages and other awards and to ensure their economic and social security and a long-term stability.
In our work we will strive to fully meet all the twelve principles of the Code of Slovenian managers.
Dolenje Mokro Polje, February 2022 Executive director: Bojan Damjanović, dipl. univ. ing.
Standard ISO 9001 and Standard ISO 14001.
Certifikat 9001 SiQ.pdf
Certifikat ISO 9001IQNet.pdf
Certifikat ISO 14001 SiQ.pdf
Certifikat ISO 14001 IQNet.pdf
Kremen has put in place a systematic concern for monitoring the quality of quartz raw materials already at the beginning of exporting the quartzite to the pretentious German market at the end of the 1950s. Due to the growing demand for the constant quality of the refractory masses, glass sands and quartzite there was a need to organise an own agricultural-technological laboratory.
However, the quality system has experienced major changes and supplements from that period, taking into account the positive practice. Increased orientation to the demanding markets for which the company had to decide after the independence of Slovenia, the loss of the southern markets and the arrival of foreign competition, brought the need to reform the quality system. In 2006, we decided to improve our quality system. We harmonised the business transactions with the international quality standard ISO 9001, which, under the term quality, does not define only the product quality but, also the combination of all activities of the company: from the production, commercial, development, organisational, financial and technical area. It applies to the entire Kremen group and to all its locations, covering the following main activities: the extraction and processing of quartz raw materials and the production of refractory materials.
The main guidance of the standard is a satisfied customer; this can be achieved by a process approach, orientation of the company's operation towards the future and constant improvement of the processes and the quality system. The establishment of quality system required a new “Quality Policy” within which we defined the essential goals for ensuring the satisfaction of our customers, suppliers and employees.
The compliance of operation with the standard enables the company a stable and long-term development and ensures an increased competition on the market.
Chemical-technological laboratory
The chemical-technological laboratory is an integral part of the Kremen d.o.o. Company. It was established already in 1963 and is designed to control the production quality of the quartz raw materials (quartzite, glass, foundry and other quartz sands and products) as well as to monitor the exploitation and research works in searching new stocks of non-metal mineral raw materials.
The laboratory is responsible for the control of the compliance of products. It analyses the non-metal mineral raw materials and refractory products with the determined analytical procedures.
The considerable progress in the field of quality control and speed of analyses was made since 2002 when an X-ray fluorescence analyser LabX-3500 Oxford Instruments was introduced into the laboratory equipment.
In tandem with the development department, the laboratory follows the needs to improve the existing products as well as the products under development dictated and requested by the customers due to the changes on the market.
Kremen d.o.o. is a mining company that was awarded a concession for research and exploitation of mineral raw materials by the State as the owner of the mineral raw materials. The company has concluded concession agreements for the deposits Raka-Ravno (quartz sands), Mirna (quartzite-chert), Prapreče (quartz gravel) and Birčna vas (refractory clay). The extraction and refinement of raw materials takes place under the constant control of the republican Mining Inspectorate.
In extracting and processing the mineral raw materials, the company takes into account all ecological standards and norms. We confirm our care for the improvement of situation in the field of environmental protection also by upgrading the quality system with the environmental management system ISO 14001, which applies to the entire Kremen group and to all its locations, covering the following main activities: the extraction and processing of quartz raw materials and the production of refractory materials.
By the established environmental management system we are committed to the integrated management of environmental protection and pushed to constantly improve our relationship to the environment. Thus, the monitoring and managing the environmental impacts have become a part of our daily activities. With the adopted environmental management policy we committed to reduce environmental, health and safety risks that could harm the workers, the environment and the population.
The largest environmental impact is caused by extracting mineral raw materials. In the past, many areas remained degraded due to the intensive exploitation and various objective reasons. The company undertook the rehabilitation of degraded areas in a systematic way by recultivating the new located areas.
The bio-rehabilitation is carried out by filling and levelling the located earths and waste sludge followed by grassing and afforestation. The rehabilitation is carried out to an extent that the area does not differ from the surrounding in any way. Our environmental goal is to locate only as many areas as needed for regular production.
The other major impact that the company causes to the environment, is the water consumption and the discharge of industrial water in the watercourse. Water is an essential element in the technological procedure of refining the quartz raw materials for the removal of unwanted alloys that are removed by washing, sieving and flotation. The technological procedure pollutes the water that runs into large sedimentation pools in which it is naturally cleaned. At the same time, the sedimentation pools serve as accumulation pools that enable a closed water circuit – the so-called environment-friendly mining. The closed water circuit means that the water is supplied into the technological process only to the extent necessary for the technological process. By doing so, the discharge of clean industrial water into the watercourse is also reduced to the minimum.
The company has obtained a water permit for the water abstraction and an environmental permit for the discharge of industrial water into the watercourse. Discharges are controlled by adequate emission monitoring. Beside the emission monitoring of waste waters, we also carry out the preventive measurements of dust and noise.
We, in the Kremen d.o.o. company and in its subsidiary companies, note that our products are indispensable and useful for everyday life, and therefore we declare for keeping our mission and providing long-term development.
The raw material deposits which are available to us, will be exploited rationally, enriched and reprocessed in such a way to keep their life time as long as possible. We want to use it so that the needs of the wide range of industries and a large number of buyers are met. Our aim is to ensure the long-term development of semi-products and products, which may bring higher processing rate together with lasting rationalization and optimization of the entire operation system.
During our production we will take steps for keeping environment clean and pleasant for humans and other living organisms. We will endeavour to ensure environmentally-favourable mining, in such a way to minimize all impacts on environment (dustiness, noise, nature appearance) and to cure/recovery the abandoned excavated surfaces as soon as possible. We will track changes and stay in compliance with all applicable laws and other requirements in the field of environmental management. We will improve our operations to prevent negative impacts on the environment by introducing new technologies and ensuring that our equipment is regularly maintained. We will ensure to make our environmental policy available to the public in the documentary form. The efficiency of quality-system management and environmental management will be verified by the periodical internal assessments and during the management review.
We will put into force our policy principles on quality-system management and environmental management by the process improvement, offering the opportunities of development and expression of creativity, using a positive energy and motivating all employees.
Together with sales of our products we offer and provide the technical consultations to our existing and might be clients, advising them how to use the products to reach the best possible results. To our buyers we want to ensure a higher rate of safety and economic effects when using our products. Therefore we endeavour to establish a dialogue and a mutually beneficial relationship with our clients, business partners, contractors and suppliers.
In our field of activity we want to be innovative, adaptive and studying company with European productivity, European business manners and international reputation, which will allow to its employees undisturbed personal and professional development, safe work and stimulating wages and other awards and to ensure their economic and social security and a long-term stability.
In our work we will strive to fully meet all the twelve principles of the Code of Slovenian managers.
Dolenje Mokro Polje, February 2022 Executive director: Bojan Damjanović, dipl. univ. ing.
Standard ISO 9001 and Standard ISO 14001.
Certifikat 9001 SiQ.pdf
Certifikat ISO 9001IQNet.pdf
Certifikat ISO 14001 SiQ.pdf
Certifikat ISO 14001 IQNet.pdf
From the modest beginnings in 1948 when the company dug out only several thousands of tons of quartz sands, KREMEN significantly increased the production of quartz sands for the needs of the glass and ceramics industry, foundry, construction and other industrial branches when joining with the facilities.
From year to year, the company increased its production as well as the range of products. It was the first company in the former Yugoslavia to introduce the production of sands for foundry and the manufacture of acidic ramming masses and refractory mortars.
An important milestone on the development path of Kremen was the construction of a flat glass plant INIS.
The ambition for processing the quartz sand also moved in the direction of glass production. The first attempts were made already in 1954 with the water glass manufacture but the production was not established. New reflections of glass production arose after 1960 when a serious shortage of flat glass occurred due to the extensive residential construction. On this basis, Kremen was awarded a task from the Republic to prepare the projects for the production of a flat glass plant. In 1959 and 1960, Kremen prepared the projects for the glass factory based on the western technology but had to move towards the eastern technology due to the political influences from Belgrade. This change was later proved fatal for the glass factory in Novo Mesto. Due to the increasing difficulties with the financing of the construction of glass factory, which was mainly financed by the state, Kremen transferred the founding rights to the municipality of Novo Mesto in 1965.
This turned to be the only solution to save Kremen from collapse. Steklarna INIS began its operation in 1965, facing large difficulties caused by the change of technology and poor equipment. The increasing loss led to the receivership of the plant INIS in 1968 and to its bankruptcy in 1972. The plant was bought by the pharmaceutical company Tovarna zdravil KRKA that made every effort to revive the glass production. Unsuccessful negotiations for glass production with foreign partners and the energy crisis led to a decision about the construction of an insulation materials plant. A failed attempt of the glass factory retarded further development of KREMEN. Thus, the project of processing the sands of poorer quality into aerated concrete and facade silica bricks also failed.
At the beginning of the 1960s, numerous deposits of non-metal minerals were active in the area of Dolenjska (Potok, Gradac, Krmelj, Globoko, Mokro Polje, Ravno and Mirna).
Today, the active deposits are Mokro Polje, Ravno and Mirna from which the today’s plants developed. An important milestone in the development of the company was in 2003 when the management and the technical sector moved from Novo Mesto to the new management building to the location near the plant Mokro Polje and the company abolished two locations unnecessary for operation.
In 1958, the company ran into difficulties as regards the stock of raw materials (57,000 m3) but the crisis was solved with accelerated and broad research work led by the acknowledged geologist Moretti. The research work gave positive results on the basis of which the Geological Institute confirmed the stocks in the amount of more than 6 million m3 on 24 May 1960. These large stocks, especially in Ravne plant at Smednik, opened the opportunity of company's development towards updating the processes of refining the quartz sands, which enabled the full exploitation of the entire mineral resources on the deposits. To this end, a washing plant was established at approximately 2 kilometres distant Račna brook in the village Gmajna. With the use of flotation processes of refining the quartz raw materials, the extraction of purer quartz sands began (SiO2 min. 99 %). The production continued to grow and reached 130,000 tons of annual production in 1986 and 1987.
The sale, and consequently the production, decreased with the collapse of Yugoslavian market and experienced the greatest downturn in 1996 when the cooperation with Steklarna Hum na Sutli suspended. The cooperation had to be suspended due to increasing extraction costs (poor raw materials) and difficulties in the purchase of new lands.
Due to the growing tendency to process the quartz raw materials, Kremen launched a research on the usefulness of the quartz raw materials. The first beginnings of the processing of quartz raw materials began in a smaller plant in Mokro Polje with the production of the cleansing powder DIK and refractory masses.
The plant gained greater momentum in 1983 with the construction of new production facilities and launch of new rotation drier followed by a new programme of dry (1988) and wet (1989) refractory masses. In 2007, the plant was converted into associated company EKW-Kremen d.o.o. in connection with its strategic partner Eisenberg Klebsand-Werke G.m.b.H.
Extraction and separation of chert (quartzite) in Mirna plant began in 1954 at the surface mining Jersovec I. It was first sold to the fireclay plant Železarna Jesenica and to Tovarna šamota Štore. With the use of quartzite bricks, the customers reached an exceptionally good refractoriness. Then, the interest in quartzite occurred also in Italy, Austria and Germany. In 1957, the company began to export on the demanding German market. The main customer was the company Didier Werke, which is today an integral part of the RHI conglomerate. Kremen itself also uses quartzite for the processing and sale to some smaller customers, but to a lesser extent.
In the 1990s, the company began to explore additional market niches for the sale of quartzite, which would include a higher level of after-treatment. In 1993, a Czech company MŠLZ was regarded as potential long-term partner but bought only washed quartzite at the beginning. On the basis of mutual interest, a crushing mill was established in 2001. As a consequence of a successful cooperation, an associated company P-D Kremen d.o.o. was founded in 2006 and renamed to RHI Magnesita KREMEN d.o.o.in 2024.